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//===- unittest/Format/FormatTest.cpp - Formatting unit tests -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "FormatTestUtils.h"
#include "clang/Format/Format.h"
#include "llvm/Support/Debug.h"
#include "gtest/gtest.h"
#define DEBUG_TYPE "format-test"
namespace clang {
namespace format {
FormatStyle getGoogleStyle() {
return getGoogleStyle(FormatStyle::LK_Cpp);
}
class FormatTest : public ::testing::Test {
protected:
std::string format(llvm::StringRef Code, unsigned Offset, unsigned Length,
const FormatStyle &Style) {
DEBUG(llvm::errs() << "---\n");
DEBUG(llvm::errs() << Code << "\n\n");
std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length));
tooling::Replacements Replaces = reformat(Style, Code, Ranges);
ReplacementCount = Replaces.size();
std::string Result = applyAllReplacements(Code, Replaces);
EXPECT_NE("", Result);
DEBUG(llvm::errs() << "\n" << Result << "\n\n");
return Result;
}
std::string
format(llvm::StringRef Code, const FormatStyle &Style = getLLVMStyle()) {
return format(Code, 0, Code.size(), Style);
}
FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) {
FormatStyle Style = getLLVMStyle();
Style.ColumnLimit = ColumnLimit;
return Style;
}
FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) {
FormatStyle Style = getGoogleStyle();
Style.ColumnLimit = ColumnLimit;
return Style;
}
void verifyFormat(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle()) {
EXPECT_EQ(Code.str(), format(test::messUp(Code), Style));
}
void verifyGoogleFormat(llvm::StringRef Code) {
verifyFormat(Code, getGoogleStyle());
}
void verifyIndependentOfContext(llvm::StringRef text) {
verifyFormat(text);
verifyFormat(llvm::Twine("void f() { " + text + " }").str());
}
/// \brief Verify that clang-format does not crash on the given input.
void verifyNoCrash(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle()) {
format(Code, Style);
}
int ReplacementCount;
};
TEST_F(FormatTest, MessUp) {
EXPECT_EQ("1 2 3", test::messUp("1 2 3"));
EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n"));
EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc"));
EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc"));
EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne"));
}
//===----------------------------------------------------------------------===//
// Basic function tests.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) {
EXPECT_EQ(";", format(";"));
}
TEST_F(FormatTest, FormatsGlobalStatementsAt0) {
EXPECT_EQ("int i;", format(" int i;"));
EXPECT_EQ("\nint i;", format(" \n\t \v \f int i;"));
EXPECT_EQ("int i;\nint j;", format(" int i; int j;"));
EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;"));
}
TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) {
EXPECT_EQ("int i;", format("int\ni;"));
}
TEST_F(FormatTest, FormatsNestedBlockStatements) {
EXPECT_EQ("{\n {\n {}\n }\n}", format("{{{}}}"));
}
TEST_F(FormatTest, FormatsNestedCall) {
verifyFormat("Method(f1, f2(f3));");
verifyFormat("Method(f1(f2, f3()));");
verifyFormat("Method(f1(f2, (f3())));");
}
TEST_F(FormatTest, NestedNameSpecifiers) {
verifyFormat("vector<::Type> v;");
verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())");
verifyFormat("static constexpr bool Bar = decltype(bar())::value;");
verifyFormat("bool a = 2 < ::SomeFunction();");
}
TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) {
EXPECT_EQ("if (a) {\n"
" f();\n"
"}",
format("if(a){f();}"));
EXPECT_EQ(4, ReplacementCount);
EXPECT_EQ("if (a) {\n"
" f();\n"
"}",
format("if (a) {\n"
" f();\n"
"}"));
EXPECT_EQ(0, ReplacementCount);
}
TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) {
EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle()));
EXPECT_EQ("int a;", format("int a; "));
EXPECT_EQ("int a;\n", format("int a; \n \n \n "));
EXPECT_EQ("int a;\nint b; ",
format("int a; \nint b; ", 0, 0, getLLVMStyle()));
}
TEST_F(FormatTest, FormatsCorrectRegionForLeadingWhitespace) {
EXPECT_EQ("int b;\nint a;",
format("int b;\n int a;", 7, 0, getLLVMStyle()));
EXPECT_EQ("int b;\n int a;",
format("int b;\n int a;", 6, 0, getLLVMStyle()));
EXPECT_EQ("#define A \\\n"
" int a; \\\n"
" int b;",
format("#define A \\\n"
" int a; \\\n"
" int b;",
26, 0, getLLVMStyleWithColumns(12)));
EXPECT_EQ("#define A \\\n"
" int a; \\\n"
" int b;",
format("#define A \\\n"
" int a; \\\n"
" int b;",
25, 0, getLLVMStyleWithColumns(12)));
}
TEST_F(FormatTest, FormatLineWhenInvokedOnTrailingNewline) {
EXPECT_EQ("int b;\n\nint a;",
format("int b;\n\nint a;", 8, 0, getLLVMStyle()));
EXPECT_EQ("int b;\n\nint a;",
format("int b;\n\nint a;", 7, 0, getLLVMStyle()));
// This might not strictly be correct, but is likely good in all practical
// cases.
EXPECT_EQ("int b;\nint a;",
format("int b;int a;", 7, 0, getLLVMStyle()));
}
TEST_F(FormatTest, RemovesWhitespaceWhenTriggeredOnEmptyLine) {
EXPECT_EQ("int a;\n\n int b;",
format("int a;\n \n\n int b;", 8, 0, getLLVMStyle()));
EXPECT_EQ("int a;\n\n int b;",
format("int a;\n \n\n int b;", 9, 0, getLLVMStyle()));
}
TEST_F(FormatTest, RemovesEmptyLines) {
EXPECT_EQ("class C {\n"
" int i;\n"
"};",
format("class C {\n"
" int i;\n"
"\n"
"};"));
// Don't remove empty lines at the start of namespaces or extern "C" blocks.
EXPECT_EQ("namespace N {\n"
"\n"
"int i;\n"
"}",
format("namespace N {\n"
"\n"
"int i;\n"
"}",
getGoogleStyle()));
EXPECT_EQ("extern /**/ \"C\" /**/ {\n"
"\n"
"int i;\n"
"}",
format("extern /**/ \"C\" /**/ {\n"
"\n"
"int i;\n"
"}",
getGoogleStyle()));
// ...but do keep inlining and removing empty lines for non-block extern "C"
// functions.
verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle());
EXPECT_EQ("extern \"C\" int f() {\n"
" int i = 42;\n"
" return i;\n"
"}",
format("extern \"C\" int f() {\n"
"\n"
" int i = 42;\n"
" return i;\n"
"}",
getGoogleStyle()));
// Remove empty lines at the beginning and end of blocks.
EXPECT_EQ("void f() {\n"
"\n"
" if (a) {\n"
"\n"
" f();\n"
" }\n"
"}",
format("void f() {\n"
"\n"
" if (a) {\n"
"\n"
" f();\n"
"\n"
" }\n"
"\n"
"}",
getLLVMStyle()));
EXPECT_EQ("void f() {\n"
" if (a) {\n"
" f();\n"
" }\n"
"}",
format("void f() {\n"
"\n"
" if (a) {\n"
"\n"
" f();\n"
"\n"
" }\n"
"\n"
"}",
getGoogleStyle()));
// Don't remove empty lines in more complex control statements.
EXPECT_EQ("void f() {\n"
" if (a) {\n"
" f();\n"
"\n"
" } else if (b) {\n"
" f();\n"
" }\n"
"}",
format("void f() {\n"
" if (a) {\n"
" f();\n"
"\n"
" } else if (b) {\n"
" f();\n"
"\n"
" }\n"
"\n"
"}"));
// FIXME: This is slightly inconsistent.
EXPECT_EQ("namespace {\n"
"int i;\n"
"}",
format("namespace {\n"
"int i;\n"
"\n"
"}"));
EXPECT_EQ("namespace {\n"
"int i;\n"
"\n"
"} // namespace",
format("namespace {\n"
"int i;\n"
"\n"
"} // namespace"));
}
TEST_F(FormatTest, ReformatsMovedLines) {
EXPECT_EQ(
"template <typename T> T *getFETokenInfo() const {\n"
" return static_cast<T *>(FETokenInfo);\n"
"}\n"
" int a; // <- Should not be formatted",
format(
"template<typename T>\n"
"T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n"
" int a; // <- Should not be formatted",
9, 5, getLLVMStyle()));
}
TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) {
verifyFormat("x = (a) and (b);");
verifyFormat("x = (a) or (b);");
verifyFormat("x = (a) bitand (b);");
verifyFormat("x = (a) bitor (b);");
verifyFormat("x = (a) not_eq (b);");
verifyFormat("x = (a) and_eq (b);");
verifyFormat("x = (a) or_eq (b);");
verifyFormat("x = (a) xor (b);");
}
//===----------------------------------------------------------------------===//
// Tests for control statements.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
verifyFormat("if (true)\n f();\ng();");
verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();");
verifyFormat("if (a)\n if (b) {\n f();\n }\ng();");
FormatStyle AllowsMergedIf = getLLVMStyle();
AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
verifyFormat("if (a)\n"
" // comment\n"
" f();",
AllowsMergedIf);
verifyFormat("if (a)\n"
" ;",
AllowsMergedIf);
verifyFormat("if (a)\n"
" if (b) return;",
AllowsMergedIf);
verifyFormat("if (a) // Can't merge this\n"
" f();\n",
AllowsMergedIf);
verifyFormat("if (a) /* still don't merge */\n"
" f();",
AllowsMergedIf);
verifyFormat("if (a) { // Never merge this\n"
" f();\n"
"}",
AllowsMergedIf);
verifyFormat("if (a) {/* Never merge this */\n"
" f();\n"
"}",
AllowsMergedIf);
EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1, AllowsMergedIf));
EXPECT_EQ("if (a) return; // comment",
format("if(a)\nreturn; // comment", 20, 1, AllowsMergedIf));
AllowsMergedIf.ColumnLimit = 14;
verifyFormat("if (a) return;", AllowsMergedIf);
verifyFormat("if (aaaaaaaaa)\n"
" return;",
AllowsMergedIf);
AllowsMergedIf.ColumnLimit = 13;
verifyFormat("if (a)\n return;", AllowsMergedIf);
}
TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
FormatStyle AllowsMergedLoops = getLLVMStyle();
AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
verifyFormat("while (true) continue;", AllowsMergedLoops);
verifyFormat("for (;;) continue;", AllowsMergedLoops);
verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops);
verifyFormat("while (true)\n"
" ;",
AllowsMergedLoops);
verifyFormat("for (;;)\n"
" ;",
AllowsMergedLoops);
verifyFormat("for (;;)\n"
" for (;;) continue;",
AllowsMergedLoops);
verifyFormat("for (;;) // Can't merge this\n"
" continue;",
AllowsMergedLoops);
verifyFormat("for (;;) /* still don't merge */\n"
" continue;",
AllowsMergedLoops);
}
TEST_F(FormatTest, FormatShortBracedStatements) {
FormatStyle AllowSimpleBracedStatements = getLLVMStyle();
AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true;
AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true;
AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
verifyFormat("if (true) {}", AllowSimpleBracedStatements);
verifyFormat("while (true) {}", AllowSimpleBracedStatements);
verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements);
verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements);
verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements);
verifyFormat("if (true) { //\n"
" f();\n"
"}",
AllowSimpleBracedStatements);
verifyFormat("if (true) {\n"
" f();\n"
" f();\n"
"}",
AllowSimpleBracedStatements);
verifyFormat("template <int> struct A2 {\n"
" struct B {};\n"
"};",
AllowSimpleBracedStatements);
AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false;
verifyFormat("if (true) {\n"
" f();\n"
"}",
AllowSimpleBracedStatements);
AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false;
verifyFormat("while (true) {\n"
" f();\n"
"}",
AllowSimpleBracedStatements);
verifyFormat("for (;;) {\n"
" f();\n"
"}",
AllowSimpleBracedStatements);
}
TEST_F(FormatTest, ParseIfElse) {
verifyFormat("if (true)\n"
" if (true)\n"
" if (true)\n"
" f();\n"
" else\n"
" g();\n"
" else\n"
" h();\n"
"else\n"
" i();");
verifyFormat("if (true)\n"
" if (true)\n"
" if (true) {\n"
" if (true)\n"
" f();\n"
" } else {\n"
" g();\n"
" }\n"
" else\n"
" h();\n"
"else {\n"
" i();\n"
"}");
verifyFormat("void f() {\n"
" if (a) {\n"
" } else {\n"
" }\n"
"}");
}
TEST_F(FormatTest, ElseIf) {
verifyFormat("if (a) {\n} else if (b) {\n}");
verifyFormat("if (a)\n"
" f();\n"
"else if (b)\n"
" g();\n"
"else\n"
" h();");
verifyFormat("if (a) {\n"
" f();\n"
"}\n"
"// or else ..\n"
"else {\n"
" g()\n"
"}");
verifyFormat("if (a) {\n"
"} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
"}");
verifyFormat("if (a) {\n"
"} else if (\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
"}",
getLLVMStyleWithColumns(62));
}
TEST_F(FormatTest, FormatsForLoop) {
verifyFormat(
"for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
" ++VeryVeryLongLoopVariable)\n"
" ;");
verifyFormat("for (;;)\n"
" f();");
verifyFormat("for (;;) {\n}");
verifyFormat("for (;;) {\n"
" f();\n"
"}");
verifyFormat("for (int i = 0; (i < 10); ++i) {\n}");
verifyFormat(
"for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
" E = UnwrappedLines.end();\n"
" I != E; ++I) {\n}");
verifyFormat(
"for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
" ++IIIII) {\n}");
verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
" aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
" I = FD->getDeclsInPrototypeScope().begin(),\n"
" E = FD->getDeclsInPrototypeScope().end();\n"
" I != E; ++I) {\n}");
verifyFormat(
"for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
" ++aaaaaaaaaaa) {\n}");
verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n"
" ++i) {\n}");
verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
" aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
"}");
verifyFormat("for (some_namespace::SomeIterator iter( // force break\n"
" aaaaaaaaaa);\n"
" iter; ++iter) {\n"
"}");
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("for (int aaaaaaaaaaa = 1;\n"
" aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa);\n"
" aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
"}",
NoBinPacking);
verifyFormat(
"for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
" E = UnwrappedLines.end();\n"
" I != E;\n"
" ++I) {\n}",
NoBinPacking);
}
TEST_F(FormatTest, RangeBasedForLoops) {
verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}");
}
TEST_F(FormatTest, ForEachLoops) {
verifyFormat("void f() {\n"
" foreach (Item *item, itemlist) {}\n"
" Q_FOREACH (Item *item, itemlist) {}\n"
" BOOST_FOREACH (Item *item, itemlist) {}\n"
" UNKNOWN_FORACH(Item * item, itemlist) {}\n"
"}");
}
TEST_F(FormatTest, FormatsWhileLoop) {
verifyFormat("while (true) {\n}");
verifyFormat("while (true)\n"
" f();");
verifyFormat("while () {\n}");
verifyFormat("while () {\n"
" f();\n"
"}");
}
TEST_F(FormatTest, FormatsDoWhile) {
verifyFormat("do {\n"
" do_something();\n"
"} while (something());");
verifyFormat("do\n"
" do_something();\n"
"while (something());");
}
TEST_F(FormatTest, FormatsSwitchStatement) {
verifyFormat("switch (x) {\n"
"case 1:\n"
" f();\n"
" break;\n"
"case kFoo:\n"
"case ns::kBar:\n"
"case kBaz:\n"
" break;\n"
"default:\n"
" g();\n"
" break;\n"
"}");
verifyFormat("switch (x) {\n"
"case 1: {\n"
" f();\n"
" break;\n"
"}\n"
"case 2: {\n"
" break;\n"
"}\n"
"}");
verifyFormat("switch (x) {\n"
"case 1: {\n"
" f();\n"
" {\n"
" g();\n"
" h();\n"
" }\n"
" break;\n"
"}\n"
"}");
verifyFormat("switch (x) {\n"
"case 1: {\n"
" f();\n"
" if (foo) {\n"
" g();\n"
" h();\n"
" }\n"
" break;\n"
"}\n"
"}");
verifyFormat("switch (x) {\n"
"case 1: {\n"
" f();\n"
" g();\n"
"} break;\n"
"}");
verifyFormat("switch (test)\n"
" ;");
verifyFormat("switch (x) {\n"
"default: {\n"
" // Do nothing.\n"
"}\n"
"}");
verifyFormat("switch (x) {\n"
"// comment\n"
"// if 1, do f()\n"
"case 1:\n"
" f();\n"
"}");
verifyFormat("switch (x) {\n"
"case 1:\n"
" // Do amazing stuff\n"
" {\n"
" f();\n"
" g();\n"
" }\n"
" break;\n"
"}");
verifyFormat("#define A \\\n"
" switch (x) { \\\n"
" case a: \\\n"
" foo = b; \\\n"
" }", getLLVMStyleWithColumns(20));
verifyFormat("#define OPERATION_CASE(name) \\\n"
" case OP_name: \\\n"
" return operations::Operation##name\n",
getLLVMStyleWithColumns(40));
verifyGoogleFormat("switch (x) {\n"
" case 1:\n"
" f();\n"
" break;\n"
" case kFoo:\n"
" case ns::kBar:\n"
" case kBaz:\n"
" break;\n"
" default:\n"
" g();\n"
" break;\n"
"}");
verifyGoogleFormat("switch (x) {\n"
" case 1: {\n"
" f();\n"
" break;\n"
" }\n"
"}");
verifyGoogleFormat("switch (test)\n"
" ;");
verifyGoogleFormat("#define OPERATION_CASE(name) \\\n"
" case OP_name: \\\n"
" return operations::Operation##name\n");
verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n"
" // Get the correction operation class.\n"
" switch (OpCode) {\n"
" CASE(Add);\n"
" CASE(Subtract);\n"
" default:\n"
" return operations::Unknown;\n"
" }\n"
"#undef OPERATION_CASE\n"
"}");
verifyFormat("DEBUG({\n"
" switch (x) {\n"
" case A:\n"
" f();\n"
" break;\n"
" // On B:\n"
" case B:\n"
" g();\n"
" break;\n"
" }\n"
"});");
verifyFormat("switch (a) {\n"
"case (b):\n"
" return;\n"
"}");
verifyFormat("switch (a) {\n"
"case some_namespace::\n"
" some_constant:\n"
" return;\n"
"}",
getLLVMStyleWithColumns(34));
}
TEST_F(FormatTest, CaseRanges) {
verifyFormat("switch (x) {\n"
"case 'A' ... 'Z':\n"
"case 1 ... 5:\n"
" break;\n"
"}");
}
TEST_F(FormatTest, ShortCaseLabels) {
FormatStyle Style = getLLVMStyle();
Style.AllowShortCaseLabelsOnASingleLine = true;
verifyFormat("switch (a) {\n"
"case 1: x = 1; break;\n"
"case 2: return;\n"
"case 3:\n"
"case 4:\n"
"case 5: return;\n"
"case 6: // comment\n"
" return;\n"
"case 7:\n"
" // comment\n"
" return;\n"
"default: y = 1; break;\n"
"}",
Style);
verifyFormat("switch (a) {\n"
"#if FOO\n"
"case 0: return 0;\n"
"#endif\n"
"}",
Style);
verifyFormat("switch (a) {\n"
"case 1: {\n"
"}\n"
"case 2: {\n"
" return;\n"
"}\n"
"case 3: {\n"
" x = 1;\n"
" return;\n"
"}\n"
"case 4:\n"
" if (x)\n"
" return;\n"
"}",
Style);
Style.ColumnLimit = 21;
verifyFormat("switch (a) {\n"
"case 1: x = 1; break;\n"
"case 2: return;\n"
"case 3:\n"
"case 4:\n"
"case 5: return;\n"
"default:\n"
" y = 1;\n"
" break;\n"
"}",
Style);
}
TEST_F(FormatTest, FormatsLabels) {
verifyFormat("void f() {\n"
" some_code();\n"
"test_label:\n"
" some_other_code();\n"
" {\n"
" some_more_code();\n"
" another_label:\n"
" some_more_code();\n"
" }\n"
"}");
verifyFormat("{\n"
" some_code();\n"
"test_label:\n"
" some_other_code();\n"
"}");
}
//===----------------------------------------------------------------------===//
// Tests for comments.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, UnderstandsSingleLineComments) {
verifyFormat("//* */");
verifyFormat("// line 1\n"
"// line 2\n"
"void f() {}\n");
verifyFormat("void f() {\n"
" // Doesn't do anything\n"
"}");
verifyFormat("SomeObject\n"
" // Calling someFunction on SomeObject\n"
" .someFunction();");
verifyFormat("auto result = SomeObject\n"
" // Calling someFunction on SomeObject\n"
" .someFunction();");
verifyFormat("void f(int i, // some comment (probably for i)\n"
" int j, // some comment (probably for j)\n"
" int k); // some comment (probably for k)");
verifyFormat("void f(int i,\n"
" // some comment (probably for j)\n"
" int j,\n"
" // some comment (probably for k)\n"
" int k);");
verifyFormat("int i // This is a fancy variable\n"
" = 5; // with nicely aligned comment.");
verifyFormat("// Leading comment.\n"
"int a; // Trailing comment.");
verifyFormat("int a; // Trailing comment\n"
" // on 2\n"
" // or 3 lines.\n"
"int b;");
verifyFormat("int a; // Trailing comment\n"
"\n"
"// Leading comment.\n"
"int b;");
verifyFormat("int a; // Comment.\n"
" // More details.\n"
"int bbbb; // Another comment.");
verifyFormat(
"int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n"
"int cccccccccccccccccccccccccccccc; // comment\n"
"int ddd; // looooooooooooooooooooooooong comment\n"
"int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
"int bbbbbbbbbbbbbbbbbbbbb; // comment\n"
"int ccccccccccccccccccc; // comment");
verifyFormat("#include \"a\" // comment\n"
"#include \"a/b/c\" // comment");
verifyFormat("#include <a> // comment\n"
"#include <a/b/c> // comment");
EXPECT_EQ("#include \"a\" // comment\n"
"#include \"a/b/c\" // comment",
format("#include \\\n"
" \"a\" // comment\n"
"#include \"a/b/c\" // comment"));
verifyFormat("enum E {\n"
" // comment\n"
" VAL_A, // comment\n"
" VAL_B\n"
"};");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" // Comment inside a statement.\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
verifyFormat("SomeFunction(a,\n"
" // comment\n"
" b + x);");
verifyFormat("SomeFunction(a, a,\n"
" // comment\n"
" b + x);");
verifyFormat(
"bool aaaaaaaaaaaaa = // comment\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("int aaaa; // aaaaa\n"
"int aa; // aaaaaaa",
getLLVMStyleWithColumns(20));
EXPECT_EQ("void f() { // This does something ..\n"
"}\n"
"int a; // This is unrelated",
format("void f() { // This does something ..\n"
" }\n"
"int a; // This is unrelated"));
EXPECT_EQ("class C {\n"
" void f() { // This does something ..\n"
" } // awesome..\n"
"\n"
" int a; // This is unrelated\n"
"};",
format("class C{void f() { // This does something ..\n"
" } // awesome..\n"
" \n"
"int a; // This is unrelated\n"
"};"));
EXPECT_EQ("int i; // single line trailing comment",
format("int i;\\\n// single line trailing comment"));
verifyGoogleFormat("int a; // Trailing comment.");
verifyFormat("someFunction(anotherFunction( // Force break.\n"
" parameter));");
verifyGoogleFormat("#endif // HEADER_GUARD");
verifyFormat("const char *test[] = {\n"
" // A\n"
" \"aaaa\",\n"
" // B\n"
" \"aaaaa\"};");
verifyGoogleFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment");
EXPECT_EQ("D(a, {\n"
" // test\n"
" int a;\n"
"});",
format("D(a, {\n"
"// test\n"
"int a;\n"
"});"));
EXPECT_EQ("lineWith(); // comment\n"
"// at start\n"
"otherLine();",
format("lineWith(); // comment\n"
"// at start\n"
"otherLine();"));
EXPECT_EQ("lineWith(); // comment\n"
" // at start\n"
"otherLine();",
format("lineWith(); // comment\n"
" // at start\n"
"otherLine();"));
EXPECT_EQ("lineWith(); // comment\n"
"// at start\n"
"otherLine(); // comment",
format("lineWith(); // comment\n"
"// at start\n"
"otherLine(); // comment"));
EXPECT_EQ("lineWith();\n"
"// at start\n"
"otherLine(); // comment",
format("lineWith();\n"
" // at start\n"
"otherLine(); // comment"));
EXPECT_EQ("// first\n"
"// at start\n"
"otherLine(); // comment",
format("// first\n"
" // at start\n"
"otherLine(); // comment"));
EXPECT_EQ("f();\n"
"// first\n"
"// at start\n"
"otherLine(); // comment",
format("f();\n"
"// first\n"
" // at start\n"
"otherLine(); // comment"));
verifyFormat("f(); // comment\n"
"// first\n"
"// at start\n"
"otherLine();");
EXPECT_EQ("f(); // comment\n"
"// first\n"
"// at start\n"
"otherLine();",
format("f(); // comment\n"
"// first\n"
" // at start\n"
"otherLine();"));
EXPECT_EQ("f(); // comment\n"
" // first\n"
"// at start\n"
"otherLine();",
format("f(); // comment\n"
" // first\n"
"// at start\n"
"otherLine();"));
EXPECT_EQ("void f() {\n"
" lineWith(); // comment\n"
" // at start\n"
"}",
format("void f() {\n"
" lineWith(); // comment\n"
" // at start\n"
"}"));
verifyFormat(
"#define A \\\n"
" int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n"
" int jjjjjjjjjjjjjjjjjjjjjjjj; /* */",
getLLVMStyleWithColumns(60));
verifyFormat(
"#define A \\\n"
" int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n"
" int jjjjjjjjjjjjjjjjjjjjjjjj; /* */",
getLLVMStyleWithColumns(61));
verifyFormat("if ( // This is some comment\n"
" x + 3) {\n"
"}");
EXPECT_EQ("if ( // This is some comment\n"
" // spanning two lines\n"
" x + 3) {\n"
"}",
format("if( // This is some comment\n"
" // spanning two lines\n"
" x + 3) {\n"
"}"));
verifyNoCrash("/\\\n/");
verifyNoCrash("/\\\n* */");
}
TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) {
EXPECT_EQ("SomeFunction(a,\n"
" b, // comment\n"
" c);",
format("SomeFunction(a,\n"
" b, // comment\n"
" c);"));
EXPECT_EQ("SomeFunction(a, b,\n"
" // comment\n"
" c);",
format("SomeFunction(a,\n"
" b,\n"
" // comment\n"
" c);"));
EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n"
" c);",
format("SomeFunction(a, b, // comment (unclear relation)\n"
" c);"));
EXPECT_EQ("SomeFunction(a, // comment\n"
" b,\n"
" c); // comment",
format("SomeFunction(a, // comment\n"
" b,\n"
" c); // comment"));
}
TEST_F(FormatTest, CanFormatCommentsLocally) {
EXPECT_EQ("int a; // comment\n"
"int b; // comment",
format("int a; // comment\n"
"int b; // comment",
0, 0, getLLVMStyle()));
EXPECT_EQ("int a; // comment\n"
" // line 2\n"
"int b;",
format("int a; // comment\n"
" // line 2\n"
"int b;",
28, 0, getLLVMStyle()));
EXPECT_EQ("int aaaaaa; // comment\n"
"int b;\n"
"int c; // unrelated comment",
format("int aaaaaa; // comment\n"
"int b;\n"
"int c; // unrelated comment",
31, 0, getLLVMStyle()));
EXPECT_EQ("int a; // This\n"
" // is\n"
" // a",
format("int a; // This\n"
" // is\n"
" // a",
0, 0, getLLVMStyle()));
EXPECT_EQ("int a; // This\n"
" // is\n"
" // a\n"
"// This is b\n"
"int b;",
format("int a; // This\n"
" // is\n"
" // a\n"
"// This is b\n"
"int b;",
0, 0, getLLVMStyle()));
EXPECT_EQ("int a; // This\n"
" // is\n"
" // a\n"
"\n"
" // This is unrelated",
format("int a; // This\n"
" // is\n"
" // a\n"
"\n"
" // This is unrelated",
0, 0, getLLVMStyle()));
EXPECT_EQ("int a;\n"
"// This is\n"
"// not formatted. ",
format("int a;\n"
"// This is\n"
"// not formatted. ",
0, 0, getLLVMStyle()));
}
TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) {
EXPECT_EQ("// comment", format("// comment "));
EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment",
format("int aaaaaaa, bbbbbbb; // comment ",
getLLVMStyleWithColumns(33)));
EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f "));
EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f "));
}
TEST_F(FormatTest, UnderstandsBlockComments) {
verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);");
verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }");
EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb);",
format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n"
"/* Trailing comment for aa... */\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb);"));
EXPECT_EQ(
"f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);",
format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n"
"/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);"));
EXPECT_EQ(
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n"
"}",
format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa ,\n"
" aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n"
"}"));
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n"
" /* parameter 2 */ aaaaaa,\n"
" /* parameter 3 */ aaaaaa,\n"
" /* parameter 4 */ aaaaaa);",
NoBinPacking);
// Aligning block comments in macros.
verifyGoogleFormat("#define A \\\n"
" int i; /*a*/ \\\n"
" int jjj; /*b*/");
}
TEST_F(FormatTest, AlignsBlockComments) {
EXPECT_EQ("/*\n"
" * Really multi-line\n"
" * comment.\n"
" */\n"
"void f() {}",
format(" /*\n"
" * Really multi-line\n"
" * comment.\n"
" */\n"
" void f() {}"));
EXPECT_EQ("class C {\n"
" /*\n"
" * Another multi-line\n"
" * comment.\n"
" */\n"
" void f() {}\n"
"};",
format("class C {\n"
"/*\n"
" * Another multi-line\n"
" * comment.\n"
" */\n"
"void f() {}\n"
"};"));
EXPECT_EQ("/*\n"
" 1. This is a comment with non-trivial formatting.\n"
" 1.1. We have to indent/outdent all lines equally\n"
" 1.1.1. to keep the formatting.\n"
" */",
format(" /*\n"
" 1. This is a comment with non-trivial formatting.\n"
" 1.1. We have to indent/outdent all lines equally\n"
" 1.1.1. to keep the formatting.\n"
" */"));
EXPECT_EQ("/*\n"
"Don't try to outdent if there's not enough indentation.\n"
"*/",
format(" /*\n"
" Don't try to outdent if there's not enough indentation.\n"
" */"));
EXPECT_EQ("int i; /* Comment with empty...\n"
" *\n"
" * line. */",
format("int i; /* Comment with empty...\n"
" *\n"
" * line. */"));
EXPECT_EQ("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment 1 */\n"
"int baz = 0; /* multiline\n"
" comment 2 */\n"
"int bzz = 0; /* multiline\n"
" comment 3 */",
format("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment 1 */\n"
"int baz = 0; /* multiline\n"
" comment 2 */\n"
"int bzz = 0; /* multiline\n"
" comment 3 */"));
EXPECT_EQ("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
" comment */\n"
"int baz = 0; /* multiline\n"
"comment */",
format("int foobar = 0; /* comment */\n"
"int bar = 0; /* multiline\n"
"comment */\n"
"int baz = 0; /* multiline\n"
"comment */"));
}
TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) {
EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */",
format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */"));
EXPECT_EQ(
"void ffffffffffff(\n"
" int aaaaaaaa, int bbbbbbbb,\n"
" int cccccccccccc) { /*\n"
" aaaaaaaaaa\n"
" aaaaaaaaaaaaa\n"
" bbbbbbbbbbbbbb\n"
" bbbbbbbbbb\n"
" */\n"
"}",
format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n"
"{ /*\n"
" aaaaaaaaaa aaaaaaaaaaaaa\n"
" bbbbbbbbbbbbbb bbbbbbbbbb\n"
" */\n"
"}",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTest, DontBreakNonTrailingBlockComments) {
EXPECT_EQ("void ffffffffff(\n"
" int aaaaa /* test */);",
format("void ffffffffff(int aaaaa /* test */);",
getLLVMStyleWithColumns(35)));
}
TEST_F(FormatTest, SplitsLongCxxComments) {
EXPECT_EQ("// A comment that\n"
"// doesn't fit on\n"
"// one line",
format("// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// a b c d\n"
"// e f g\n"
"// h i j k",
format("// a b c d e f g h i j k",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("// a b c d\n"
"// e f g\n"
"// h i j k",
format("\\\n// a b c d e f g h i j k",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("if (true) // A comment that\n"
" // doesn't fit on\n"
" // one line",
format("if (true) // A comment that doesn't fit on one line ",
getLLVMStyleWithColumns(30)));
EXPECT_EQ("// Don't_touch_leading_whitespace",
format("// Don't_touch_leading_whitespace",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("// Add leading\n"
"// whitespace",
format("//Add leading whitespace", getLLVMStyleWithColumns(20)));
EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle()));
EXPECT_EQ("// Even if it makes the line exceed the column\n"
"// limit",
format("//Even if it makes the line exceed the column limit",
getLLVMStyleWithColumns(51)));
EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle()));
EXPECT_EQ("// aa bb cc dd",
format("// aa bb cc dd ",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("// A comment before\n"
"// a macro\n"
"// definition\n"
"#define a b",
format("// A comment before a macro definition\n"
"#define a b",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("void ffffff(\n"
" int aaaaaaaaa, // wwww\n"
" int bbbbbbbbbb, // xxxxxxx\n"
" // yyyyyyyyyy\n"
" int c, int d, int e) {}",
format("void ffffff(\n"
" int aaaaaaaaa, // wwww\n"
" int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n"
" int c, int d, int e) {}",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
getLLVMStyleWithColumns(20)));
EXPECT_EQ(
"#define XXX // a b c d\n"
" // e f g h",
format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22)));
EXPECT_EQ(
"#define XXX // q w e r\n"
" // t y u i",
format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22)));
}
TEST_F(FormatTest, PreservesHangingIndentInCxxComments) {
EXPECT_EQ("// A comment\n"
"// that doesn't\n"
"// fit on one\n"
"// line",
format("// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/// A comment\n"
"/// that doesn't\n"
"/// fit on one\n"
"/// line",
format("/// A comment that doesn't fit on one line",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) {
EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
"// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"));
EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
getLLVMStyleWithColumns(50)));
// FIXME: One day we might want to implement adjustment of leading whitespace
// of the consecutive lines in this kind of comment:
EXPECT_EQ("double\n"
" a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n"
" // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
getLLVMStyleWithColumns(49)));
}
TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) {
FormatStyle Pragmas = getLLVMStyleWithColumns(30);
Pragmas.CommentPragmas = "^ IWYU pragma:";
EXPECT_EQ(
"// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb",
format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas));
EXPECT_EQ(
"/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */",
format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas));
}
TEST_F(FormatTest, PriorityOfCommentBreaking) {
EXPECT_EQ("if (xxx ==\n"
" yyy && // aaaaaaaaaaaa bbbbbbbbb\n"
" zzz)\n"
" q();",
format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("if (xxxxxxxxxx ==\n"
" yyy && // aaaaaa bbbbbbbb cccc\n"
" zzz)\n"
" q();",
format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("if (xxxxxxxxxx &&\n"
" yyy || // aaaaaa bbbbbbbb cccc\n"
" zzz)\n"
" q();",
format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n"
" zzz) q();",
getLLVMStyleWithColumns(40)));
EXPECT_EQ("fffffffff(\n"
" &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n"
" zzz);",
format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n"
" zzz);",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTest, MultiLineCommentsInDefines) {
EXPECT_EQ("#define A(x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
format("#define A(x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
getLLVMStyleWithColumns(17)));
EXPECT_EQ("#define A( \\\n"
" x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
format("#define A( \\\n"
" x) /* \\\n"
" a comment \\\n"
" inside */ \\\n"
" f();",
getLLVMStyleWithColumns(17)));
}
TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) {
EXPECT_EQ("namespace {}\n// Test\n#define A",
format("namespace {}\n // Test\n#define A"));
EXPECT_EQ("namespace {}\n/* Test */\n#define A",
format("namespace {}\n /* Test */\n#define A"));
EXPECT_EQ("namespace {}\n/* Test */ #define A",
format("namespace {}\n /* Test */ #define A"));
}
TEST_F(FormatTest, SplitsLongLinesInComments) {
EXPECT_EQ("/* This is a long\n"
" * comment that\n"
" * doesn't\n"
" * fit on one line.\n"
" */",
format("/* "
"This is a long "
"comment that "
"doesn't "
"fit on one line. */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* a b c d\n"
" * e f g\n"
" * h i j k\n"
" */",
format("/* a b c d e f g h i j k */",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("/* a b c d\n"
" * e f g\n"
" * h i j k\n"
" */",
format("\\\n/* a b c d e f g h i j k */",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("/*\n"
"This is a long\n"
"comment that doesn't\n"
"fit on one line.\n"
"*/",
format("/*\n"
"This is a long "
"comment that doesn't "
"fit on one line. \n"
"*/", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This is a long\n"
" * comment that\n"
" * doesn't fit on\n"
" * one line.\n"
" */",
format("/* \n"
" * This is a long "
" comment that "
" doesn't fit on "
" one line. \n"
" */", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This_is_a_comment_with_words_that_dont_fit_on_one_line\n"
" * so_it_should_be_broken\n"
" * wherever_a_space_occurs\n"
" */",
format("/*\n"
" * This_is_a_comment_with_words_that_dont_fit_on_one_line "
" so_it_should_be_broken "
" wherever_a_space_occurs \n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This_comment_can_not_be_broken_into_lines\n"
" */",
format("/*\n"
" * This_comment_can_not_be_broken_into_lines\n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" /*\n"
" This is another\n"
" long comment that\n"
" doesn't fit on one\n"
" line 1234567890\n"
" */\n"
"}",
format("{\n"
"/*\n"
"This is another "
" long comment that "
" doesn't fit on one"
" line 1234567890\n"
"*/\n"
"}", getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" /*\n"
" * This i s\n"
" * another comment\n"
" * t hat doesn' t\n"
" * fit on one l i\n"
" * n e\n"
" */\n"
"}",
format("{\n"
"/*\n"
" * This i s"
" another comment"
" t hat doesn' t"
" fit on one l i"
" n e\n"
" */\n"
"}", getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
" * This is a long\n"
" * comment that\n"
" * doesn't fit on\n"
" * one line\n"
" */",
format(" /*\n"
" * This is a long comment that doesn't fit on one line\n"
" */", getLLVMStyleWithColumns(20)));
EXPECT_EQ("{\n"
" if (something) /* This is a\n"
" long\n"
" comment */\n"
" ;\n"
"}",
format("{\n"
" if (something) /* This is a long comment */\n"
" ;\n"
"}",
getLLVMStyleWithColumns(30)));
EXPECT_EQ("/* A comment before\n"
" * a macro\n"
" * definition */\n"
"#define a b",
format("/* A comment before a macro definition */\n"
"#define a b",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/* some comment\n"
" * a comment\n"
"* that we break\n"
" * another comment\n"
"* we have to break\n"
"* a left comment\n"
" */",
format(" /* some comment\n"
" * a comment that we break\n"
" * another comment we have to break\n"
"* a left comment\n"
" */",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("/*\n"
"\n"
"\n"
" */\n",
format(" /* \n"
" \n"
" \n"
" */\n"));
EXPECT_EQ("/* a a */",
format("/* a a */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* a a bc */",
format("/* a a bc */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* aaa aaa\n"
" * aaaaa */",
format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15)));
EXPECT_EQ("/* aaa aaa\n"
" * aaaaa */",
format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15)));
}
TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) {
EXPECT_EQ("#define X \\\n"
" /* \\\n"
" Test \\\n"
" Macro comment \\\n"
" with a long \\\n"
" line \\\n"
" */ \\\n"
" A + B",
format("#define X \\\n"
" /*\n"
" Test\n"
" Macro comment with a long line\n"
" */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define X \\\n"
" /* Macro comment \\\n"
" with a long \\\n"
" line */ \\\n"
" A + B",
format("#define X \\\n"
" /* Macro comment with a long\n"
" line */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define X \\\n"
" /* Macro comment \\\n"
" * with a long \\\n"
" * line */ \\\n"
" A + B",
format("#define X \\\n"
" /* Macro comment with a long line */ \\\n"
" A + B",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTest, CommentsInStaticInitializers) {
EXPECT_EQ(
"static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n"
" aaaaaaaaaaaaaaaaaaaa /* comment */,\n"
" /* comment */ aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaa, // comment\n"
" aaaaaaaaaaaaaaaaaaaa};",
format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n"
" aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n"
" /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n"
" aaaaaaaaaaaaaaaaaaaa , // comment\n"
" aaaaaaaaaaaaaaaaaaaa };"));
verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyFormat("static SomeType type = {aaaaaaaaaaa,\n"
" // comment for bb....\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyGoogleFormat(
"static SomeType type = {aaaaaaaaaaa, // comment for aa...\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n"
" // comment for bb....\n"
" bbbbbbbbbbb, ccccccccccc};");
verifyFormat("S s = {{a, b, c}, // Group #1\n"
" {d, e, f}, // Group #2\n"
" {g, h, i}}; // Group #3");
verifyFormat("S s = {{// Group #1\n"
" a, b, c},\n"
" {// Group #2\n"
" d, e, f},\n"
" {// Group #3\n"
" g, h, i}};");
EXPECT_EQ("S s = {\n"
" // Some comment\n"
" a,\n"
"\n"
" // Comment after empty line\n"
" b}",
format("S s = {\n"
" // Some comment\n"
" a,\n"
" \n"
" // Comment after empty line\n"
" b\n"
"}"));
EXPECT_EQ("S s = {\n"
" /* Some comment */\n"
" a,\n"
"\n"
" /* Comment after empty line */\n"
" b}",
format("S s = {\n"
" /* Some comment */\n"
" a,\n"
" \n"
" /* Comment after empty line */\n"
" b\n"
"}"));
verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n"
" 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
" 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
" 0x00, 0x00, 0x00, 0x00}; // comment\n");
}
TEST_F(FormatTest, IgnoresIf0Contents) {
EXPECT_EQ("#if 0\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f() {}",
format("#if 0\n"
"}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
"#endif\n"
"void f( ) { }"));
EXPECT_EQ("#if false\n"
"void f( ) { }\n"
"#endif\n"
"void g() {}\n",
format("#if false\n"
"void f( ) { }\n"
"#endif\n"
"void g( ) { }\n"));
EXPECT_EQ("enum E {\n"
" One,\n"
" Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five\n"
"};",
format("enum E {\n"
" One,Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five};"));
EXPECT_EQ("enum F {\n"
" One,\n"
"#if 1\n"
" Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
" Five\n"
"#endif\n"
"};",
format("enum F {\n"
"One,\n"
"#if 1\n"
"Two,\n"
"#if 0\n"
"Three,\n"
" Four,\n"
"#endif\n"
"Five\n"
"#endif\n"
"};"));
EXPECT_EQ("enum G {\n"
" One,\n"
"#if 0\n"
"Two,\n"
"#else\n"
" Three,\n"
"#endif\n"
" Four\n"
"};",
format("enum G {\n"
"One,\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum H {\n"
" One,\n"
"#if 0\n"
"#ifdef Q\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"#endif\n"
" Four\n"
"};",
format("enum H {\n"
"One,\n"
"#if 0\n"
"#ifdef Q\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum I {\n"
" One,\n"
"#if /* test */ 0 || 1\n"
"Two,\n"
"Three,\n"
"#endif\n"
" Four\n"
"};",
format("enum I {\n"
"One,\n"
"#if /* test */ 0 || 1\n"
"Two,\n"
"Three,\n"
"#endif\n"
"Four\n"
"};"));
EXPECT_EQ("enum J {\n"
" One,\n"
"#if 0\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four,\n"
"#endif\n"
" Five\n"
"};",
format("enum J {\n"
"One,\n"
"#if 0\n"
"#if 0\n"
"Two,\n"
"#else\n"
"Three,\n"
"#endif\n"
"Four,\n"
"#endif\n"
"Five\n"
"};"));
}
//===----------------------------------------------------------------------===//
// Tests for classes, namespaces, etc.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
verifyFormat("class A {};");
}
TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
verifyFormat("class A {\n"
"public:\n"
"public: // comment\n"
"protected:\n"
"private:\n"
" void f() {}\n"
"};");
verifyGoogleFormat("class A {\n"
" public:\n"
" protected:\n"
" private:\n"
" void f() {}\n"
"};");
verifyFormat("class A {\n"
"public slots:\n"
" void f() {}\n"
"public Q_SLOTS:\n"
" void f() {}\n"
"signals:\n"
" void g();\n"
"};");
}
TEST_F(FormatTest, SeparatesLogicalBlocks) {
EXPECT_EQ("class A {\n"
"public:\n"
" void f();\n"
"\n"
"private:\n"
" void g() {}\n"
" // test\n"
"protected:\n"
" int h;\n"
"};",
format("class A {\n"
"public:\n"
"void f();\n"
"private:\n"
"void g() {}\n"
"// test\n"
"protected:\n"
"int h;\n"
"};"));
EXPECT_EQ("class A {\n"
"protected:\n"
"public:\n"
" void f();\n"
"};",
format("class A {\n"
"protected:\n"
"\n"
"public:\n"
"\n"
" void f();\n"
"};"));
// Even ensure proper spacing inside macros.
EXPECT_EQ("#define B \\\n"
" class A { \\\n"
" protected: \\\n"
" public: \\\n"
" void f(); \\\n"
" };",
format("#define B \\\n"
" class A { \\\n"
" protected: \\\n"
" \\\n"
" public: \\\n"
" \\\n"
" void f(); \\\n"
" };",
getGoogleStyle()));
// But don't remove empty lines after macros ending in access specifiers.
EXPECT_EQ("#define A private:\n"
"\n"
"int i;",
format("#define A private:\n"
"\n"
"int i;"));
}
TEST_F(FormatTest, FormatsClasses) {
verifyFormat("class A : public B {};");
verifyFormat("class A : public ::B {};");
verifyFormat(
"class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
" public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
" : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
" public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
verifyFormat(
"class A : public B, public C, public D, public E, public F {};");
verifyFormat("class AAAAAAAAAAAA : public B,\n"
" public C,\n"
" public D,\n"
" public E,\n"
" public F,\n"
" public G {};");
verifyFormat("class\n"
" ReallyReallyLongClassName {\n"
" int i;\n"
"};",
getLLVMStyleWithColumns(32));
verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n"
" aaaaaaaaaaaaaaaa> {};");
verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n"
" : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaa> {};");
verifyFormat("template <class R, class C>\n"
"struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n"
" : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};");
verifyFormat("class ::A::B {};");
}
TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
verifyFormat("class A {\n} a, b;");
verifyFormat("struct A {\n} a, b;");
verifyFormat("union A {\n} a;");
}
TEST_F(FormatTest, FormatsEnum) {
verifyFormat("enum {\n"
" Zero,\n"
" One = 1,\n"
" Two = One + 1,\n"
" Three = (One + Two),\n"
" Four = (Zero && (One ^ Two)) | (One << Two),\n"
" Five = (One, Two, Three, Four, 5)\n"
"};");
verifyGoogleFormat("enum {\n"
" Zero,\n"
" One = 1,\n"
" Two = One + 1,\n"
" Three = (One + Two),\n"
" Four = (Zero && (One ^ Two)) | (One << Two),\n"
" Five = (One, Two, Three, Four, 5)\n"
"};");
verifyFormat("enum Enum {};");
verifyFormat("enum {};");
verifyFormat("enum X E {} d;");
verifyFormat("enum __attribute__((...)) E {} d;");
verifyFormat("enum __declspec__((...)) E {} d;");
verifyFormat("enum X f() {\n a();\n return 42;\n}");
verifyFormat("enum {\n"
" Bar = Foo<int, int>::value\n"
"};",
getLLVMStyleWithColumns(30));
verifyFormat("enum ShortEnum { A, B, C };");
verifyGoogleFormat("enum ShortEnum { A, B, C };");
EXPECT_EQ("enum KeepEmptyLines {\n"
" ONE,\n"
"\n"
" TWO,\n"
"\n"
" THREE\n"
"}",
format("enum KeepEmptyLines {\n"
" ONE,\n"
"\n"
" TWO,\n"
"\n"
"\n"
" THREE\n"
"}"));
verifyFormat("enum E { // comment\n"
" ONE,\n"
" TWO\n"
"};\n"
"int i;");
}
TEST_F(FormatTest, FormatsEnumsWithErrors) {
verifyFormat("enum Type {\n"
" One = 0; // These semicolons should be commas.\n"
" Two = 1;\n"
"};");
verifyFormat("namespace n {\n"
"enum Type {\n"
" One,\n"
" Two, // missing };\n"
" int i;\n"
"}\n"
"void g() {}");
}
TEST_F(FormatTest, FormatsEnumStruct) {
verifyFormat("enum struct {\n"
" Zero,\n"
" One = 1,\n"
" Two = One + 1,\n"
" Three = (One + Two),\n"
" Four = (Zero && (One ^ Two)) | (One << Two),\n"
" Five = (One, Two, Three, Four, 5)\n"
"};");
verifyFormat("enum struct Enum {};");
verifyFormat("enum struct {};");
verifyFormat("enum struct X E {} d;");
verifyFormat("enum struct __attribute__((...)) E {} d;");
verifyFormat("enum struct __declspec__((...)) E {} d;");
verifyFormat("enum struct X f() {\n a();\n return 42;\n}");
}
TEST_F(FormatTest, FormatsEnumClass) {
verifyFormat("enum class {\n"
" Zero,\n"
" One = 1,\n"
" Two = One + 1,\n"
" Three = (One + Two),\n"
" Four = (Zero && (One ^ Two)) | (One << Two),\n"
" Five = (One, Two, Three, Four, 5)\n"
"};");
verifyFormat("enum class Enum {};");
verifyFormat("enum class {};");
verifyFormat("enum class X E {} d;");
verifyFormat("enum class __attribute__((...)) E {} d;");
verifyFormat("enum class __declspec__((...)) E {} d;");
verifyFormat("enum class X f() {\n a();\n return 42;\n}");
}
TEST_F(FormatTest, FormatsEnumTypes) {
verifyFormat("enum X : int {\n"
" A, // Force multiple lines.\n"
" B\n"
"};");
verifyFormat("enum X : int { A, B };");
verifyFormat("enum X : std::uint32_t { A, B };");
}
TEST_F(FormatTest, FormatsNSEnums) {
verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }");
verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n"
" // Information about someDecentlyLongValue.\n"
" someDecentlyLongValue,\n"
" // Information about anotherDecentlyLongValue.\n"
" anotherDecentlyLongValue,\n"
" // Information about aThirdDecentlyLongValue.\n"
" aThirdDecentlyLongValue\n"
"};");
verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n"
" a = 1,\n"
" b = 2,\n"
" c = 3,\n"
"};");
verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n"
" a = 1,\n"
" b = 2,\n"
" c = 3,\n"
"};");
verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n"
" a = 1,\n"
" b = 2,\n"
" c = 3,\n"
"};");
}
TEST_F(FormatTest, FormatsBitfields) {
verifyFormat("struct Bitfields {\n"
" unsigned sClass : 8;\n"
" unsigned ValueKind : 2;\n"
"};");
verifyFormat("struct A {\n"
" int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb;\n"
"};");
verifyFormat("struct MyStruct {\n"
" uchar data;\n"
" uchar : 8;\n"
" uchar : 8;\n"
" uchar other;\n"
"};");
}
TEST_F(FormatTest, FormatsNamespaces) {
verifyFormat("namespace some_namespace {\n"
"class A {};\n"
"void f() { f(); }\n"
"}");
verifyFormat("namespace {\n"
"class A {};\n"
"void f() { f(); }\n"
"}");
verifyFormat("inline namespace X {\n"
"class A {};\n"
"void f() { f(); }\n"
"}");
verifyFormat("using namespace some_namespace;\n"
"class A {};\n"
"void f() { f(); }");
// This code is more common than we thought; if we
// layout this correctly the semicolon will go into
// its own line, which is undesirable.
verifyFormat("namespace {};");
verifyFormat("namespace {\n"
"class A {};\n"
"};");
verifyFormat("namespace {\n"
"int SomeVariable = 0; // comment\n"
"} // namespace");
EXPECT_EQ("#ifndef HEADER_GUARD\n"
"#define HEADER_GUARD\n"
"namespace my_namespace {\n"
"int i;\n"
"} // my_namespace\n"
"#endif // HEADER_GUARD",
format("#ifndef HEADER_GUARD\n"
" #define HEADER_GUARD\n"
" namespace my_namespace {\n"
"int i;\n"
"} // my_namespace\n"
"#endif // HEADER_GUARD"));
FormatStyle Style = getLLVMStyle();
Style.NamespaceIndentation = FormatStyle::NI_All;
EXPECT_EQ("namespace out {\n"
" int i;\n"
" namespace in {\n"
" int i;\n"
" } // namespace\n"
"} // namespace",
format("namespace out {\n"
"int i;\n"
"namespace in {\n"
"int i;\n"
"} // namespace\n"
"} // namespace",
Style));
Style.NamespaceIndentation = FormatStyle::NI_Inner;
EXPECT_EQ("namespace out {\n"
"int i;\n"
"namespace in {\n"
" int i;\n"
"} // namespace\n"
"} // namespace",
format("namespace out {\n"
"int i;\n"
"namespace in {\n"
"int i;\n"
"} // namespace\n"
"} // namespace",
Style));
}
TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); }
TEST_F(FormatTest, FormatsInlineASM) {
verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));");
verifyFormat("asm(\"nop\" ::: \"memory\");");
verifyFormat(
"asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n"
" \"cpuid\\n\\t\"\n"
" \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n"
" : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n"
" : \"a\"(value));");
EXPECT_EQ(
"void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n"
" __asm {\n"
" mov edx,[that] // vtable in edx\n"
" mov eax,methodIndex\n"
" call [edx][eax*4] // stdcall\n"
" }\n"
"}",
format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n"
" __asm {\n"
" mov edx,[that] // vtable in edx\n"
" mov eax,methodIndex\n"
" call [edx][eax*4] // stdcall\n"
" }\n"
"}"));
verifyFormat("void function() {\n"
" // comment\n"
" asm(\"\");\n"
"}");
}
TEST_F(FormatTest, FormatTryCatch) {
verifyFormat("try {\n"
" throw a * b;\n"
"} catch (int a) {\n"
" // Do nothing.\n"
"} catch (...) {\n"
" exit(42);\n"
"}");
// Function-level try statements.
verifyFormat("int f() try { return 4; } catch (...) {\n"
" return 5;\n"
"}");
verifyFormat("class A {\n"
" int a;\n"
" A() try : a(0) {\n"
" } catch (...) {\n"
" throw;\n"
" }\n"
"};\n");
// Incomplete try-catch blocks.
verifyFormat("try {} catch (");
}
TEST_F(FormatTest, FormatSEHTryCatch) {
verifyFormat("__try {\n"
" int a = b * c;\n"
"} __except (EXCEPTION_EXECUTE_HANDLER) {\n"
" // Do nothing.\n"
"}");
verifyFormat("__try {\n"
" int a = b * c;\n"
"} __finally {\n"
" // Do nothing.\n"
"}");
verifyFormat("DEBUG({\n"
" __try {\n"
" } __finally {\n"
" }\n"
"});\n");
}
TEST_F(FormatTest, IncompleteTryCatchBlocks) {
verifyFormat("try {\n"
" f();\n"
"} catch {\n"
" g();\n"
"}");
verifyFormat("try {\n"
" f();\n"
"} catch (A a) MACRO(x) {\n"
" g();\n"
"} catch (B b) MACRO(x) {\n"
" g();\n"
"}");
}
TEST_F(FormatTest, FormatTryCatchBraceStyles) {
FormatStyle Style = getLLVMStyle();
Style.BreakBeforeBraces = FormatStyle::BS_Attach;
verifyFormat("try {\n"
" // something\n"
"} catch (...) {\n"
" // something\n"
"}",
Style);
Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
verifyFormat("try {\n"
" // something\n"
"}\n"
"catch (...) {\n"
" // something\n"
"}",
Style);
verifyFormat("__try {\n"
" // something\n"
"}\n"
"__finally {\n"
" // something\n"
"}",
Style);
verifyFormat("@try {\n"
" // something\n"
"}\n"
"@finally {\n"
" // something\n"
"}",
Style);
Style.BreakBeforeBraces = FormatStyle::BS_Allman;
verifyFormat("try\n"
"{\n"
" // something\n"
"}\n"
"catch (...)\n"
"{\n"
" // something\n"
"}",
Style);
Style.BreakBeforeBraces = FormatStyle::BS_GNU;
verifyFormat("try\n"
" {\n"
" // something\n"
" }\n"
"catch (...)\n"
" {\n"
" // something\n"
" }",
Style);
}
TEST_F(FormatTest, FormatObjCTryCatch) {
verifyFormat("@try {\n"
" f();\n"
"} @catch (NSException e) {\n"
" @throw;\n"
"} @finally {\n"
" exit(42);\n"
"}");
verifyFormat("DEBUG({\n"
" @try {\n"
" } @finally {\n"
" }\n"
"});\n");
}
TEST_F(FormatTest, StaticInitializers) {
verifyFormat("static SomeClass SC = {1, 'a'};");
verifyFormat(
"static SomeClass WithALoooooooooooooooooooongName = {\n"
" 100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};");
// Here, everything other than the "}" would fit on a line.
verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n"
" 10000000000000000000000000};");
EXPECT_EQ("S s = {a,\n"
"\n"
" b};",
format("S s = {\n"
" a,\n"
"\n"
" b\n"
"};"));
// FIXME: This would fit into the column limit if we'd fit "{ {" on the first
// line. However, the formatting looks a bit off and this probably doesn't
// happen often in practice.
verifyFormat("static int Variable[1] = {\n"
" {1000000000000000000000000000000000000}};",
getLLVMStyleWithColumns(40));
}
TEST_F(FormatTest, DesignatedInitializers) {
verifyFormat("const struct A a = {.a = 1, .b = 2};");
verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n"
" .bbbbbbbbbb = 2,\n"
" .cccccccccc = 3,\n"
" .dddddddddd = 4,\n"
" .eeeeeeeeee = 5};");
verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n"
" .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n"
" .ccccccccccccccccccccccccccc = 3,\n"
" .ddddddddddddddddddddddddddd = 4,\n"
" .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};");
verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};");
}
TEST_F(FormatTest, NestedStaticInitializers) {
verifyFormat("static A x = {{{}}};\n");
verifyFormat("static A x = {{{init1, init2, init3, init4},\n"
" {init1, init2, init3, init4}}};",
getLLVMStyleWithColumns(50));
verifyFormat("somes Status::global_reps[3] = {\n"
" {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
" {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
" {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};",
getLLVMStyleWithColumns(60));
verifyGoogleFormat("SomeType Status::global_reps[3] = {\n"
" {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
" {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
" {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};");
verifyFormat(
"CGRect cg_rect = {{rect.fLeft, rect.fTop},\n"
" {rect.fRight - rect.fLeft, rect.fBottom - rect.fTop}};");
verifyFormat(
"SomeArrayOfSomeType a = {\n"
" {{1, 2, 3},\n"
" {1, 2, 3},\n"
" {111111111111111111111111111111, 222222222222222222222222222222,\n"
" 333333333333333333333333333333},\n"
" {1, 2, 3},\n"
" {1, 2, 3}}};");
verifyFormat(
"SomeArrayOfSomeType a = {\n"
" {{1, 2, 3}},\n"
" {{1, 2, 3}},\n"
" {{111111111111111111111111111111, 222222222222222222222222222222,\n"
" 333333333333333333333333333333}},\n"
" {{1, 2, 3}},\n"
" {{1, 2, 3}}};");
verifyFormat(
"struct {\n"
" unsigned bit;\n"
" const char *const name;\n"
"} kBitsToOs[] = {{kOsMac, \"Mac\"},\n"
" {kOsWin, \"Windows\"},\n"
" {kOsLinux, \"Linux\"},\n"
" {kOsCrOS, \"Chrome OS\"}};");
verifyFormat(
"struct {\n"
" unsigned bit;\n"
" const char *const name;\n"
"} kBitsToOs[] = {\n"
" {kOsMac, \"Mac\"},\n"
" {kOsWin, \"Windows\"},\n"
" {kOsLinux, \"Linux\"},\n"
" {kOsCrOS, \"Chrome OS\"},\n"
"};");
}
TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
" \\\n"
" aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
}
TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
verifyFormat("virtual void write(ELFWriter *writerrr,\n"
" OwningPtr<FileOutputBuffer> &buffer) = 0;");
}
TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) {
verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3",
getLLVMStyleWithColumns(40));
verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
getLLVMStyleWithColumns(40));
EXPECT_EQ("#define Q \\\n"
" \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n"
" \"aaaaaaaa.cpp\"",
format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTest, UnderstandsLinePPDirective) {
EXPECT_EQ("# 123 \"A string literal\"",
format(" # 123 \"A string literal\""));
}
TEST_F(FormatTest, LayoutUnknownPPDirective) {
EXPECT_EQ("#;", format("#;"));
verifyFormat("#\n;\n;\n;");
}
TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
EXPECT_EQ("#line 42 \"test\"\n",
format("# \\\n line \\\n 42 \\\n \"test\"\n"));
EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n",
getLLVMStyleWithColumns(12)));
}
TEST_F(FormatTest, EndOfFileEndsPPDirective) {
EXPECT_EQ("#line 42 \"test\"",
format("# \\\n line \\\n 42 \\\n \"test\""));
EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B"));
}
TEST_F(FormatTest, DoesntRemoveUnknownTokens) {
verifyFormat("#define A \\x20");
verifyFormat("#define A \\ x20");
EXPECT_EQ("#define A \\ x20", format("#define A \\ x20"));
verifyFormat("#define A ''");
verifyFormat("#define A ''qqq");
verifyFormat("#define A `qqq");
verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");");
EXPECT_EQ("const char *c = STRINGIFY(\n"
"\\na : b);",
format("const char * c = STRINGIFY(\n"
"\\na : b);"));
verifyFormat("a\r\\");
verifyFormat("a\v\\");
verifyFormat("a\f\\");
}
TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12));
verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12));
// FIXME: We never break before the macro name.
verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12));
verifyFormat("#define A A\n#define A A");
verifyFormat("#define A(X) A\n#define A A");
verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22));
}
TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
EXPECT_EQ("// somecomment\n"
"#include \"a.h\"\n"
"#define A( \\\n"
" A, B)\n"
"#include \"b.h\"\n"
"// somecomment\n",
format(" // somecomment\n"
" #include \"a.h\"\n"
"#define A(A,\\\n"
" B)\n"
" #include \"b.h\"\n"
" // somecomment\n",
getLLVMStyleWithColumns(13)));
}
TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
EXPECT_EQ("#define A \\\n"
" c; \\\n"
" e;\n"
"f;",
format("#define A c; e;\n"
"f;",
getLLVMStyleWithColumns(14)));
}
TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) {
EXPECT_EQ("int i;\n"
"#define A \\\n"
" int i; \\\n"
" int j\n"
"int k;",
format("int i;\n"
"#define A \\\n"
" int i ; \\\n"
" int j\n"
"int k;",
8, 0, getGoogleStyle())); // 8: position of "#define".
EXPECT_EQ("int i;\n"
"#define A \\\n"
" int i; \\\n"
" int j\n"
"int k;",
format("int i;\n"
"#define A \\\n"
" int i ; \\\n"
" int j\n"
"int k;",
45, 0, getGoogleStyle())); // 45: position of "j".
}
TEST_F(FormatTest, MacroDefinitionInsideStatement) {
EXPECT_EQ("int x,\n"
"#define A\n"
" y;",
format("int x,\n#define A\ny;"));
}
TEST_F(FormatTest, HashInMacroDefinition) {
EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle()));
verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11));
verifyFormat("#define A \\\n"
" { \\\n"
" f(#c); \\\n"
" }",
getLLVMStyleWithColumns(11));
verifyFormat("#define A(X) \\\n"
" void function##X()",
getLLVMStyleWithColumns(22));
verifyFormat("#define A(a, b, c) \\\n"
" void a##b##c()",
getLLVMStyleWithColumns(22));
verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
}
TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
EXPECT_EQ("#define A (x)", format("#define A (x)"));
EXPECT_EQ("#define A(x)", format("#define A(x)"));
}
TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
EXPECT_EQ("#define A b;", format("#define A \\\n"
" \\\n"
" b;",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("#define A \\\n"
" \\\n"
" a; \\\n"
" b;",
format("#define A \\\n"
" \\\n"
" a; \\\n"
" b;",
getLLVMStyleWithColumns(11)));
EXPECT_EQ("#define A \\\n"
" a; \\\n"
" \\\n"
" b;",
format("#define A \\\n"
" a; \\\n"
" \\\n"
" b;",
getLLVMStyleWithColumns(11)));
}
TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
verifyFormat("#define A :");
verifyFormat("#define SOMECASES \\\n"
" case 1: \\\n"
" case 2\n",
getLLVMStyleWithColumns(20));
verifyFormat("#define A template <typename T>");
verifyFormat("#define STR(x) #x\n"
"f(STR(this_is_a_string_literal{));");
verifyFormat("#pragma omp threadprivate( \\\n"
" y)), // expected-warning",
getLLVMStyleWithColumns(28));
verifyFormat("#d, = };");
verifyFormat("#if \"a");
verifyFormat("({\n"
"#define b }\\\n"
" a\n"
"a");
verifyFormat("#define A \\\n"
" { \\\n"
" {\n"
"#define B \\\n"
" } \\\n"
" }",
getLLVMStyleWithColumns(15));
verifyNoCrash("#if a\na(\n#else\n#endif\n{a");
verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}");
verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};");
verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() { \n)}");
}
TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) {
verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline.
EXPECT_EQ("class A : public QObject {\n"
" Q_OBJECT\n"
"\n"
" A() {}\n"
"};",
format("class A : public QObject {\n"
" Q_OBJECT\n"
"\n"
" A() {\n}\n"
"} ;"));
EXPECT_EQ("SOME_MACRO\n"
"namespace {\n"
"void f();\n"
"}",
format("SOME_MACRO\n"
" namespace {\n"
"void f( );\n"
"}"));
// Only if the identifier contains at least 5 characters.
EXPECT_EQ("HTTP f();",
format("HTTP\nf();"));
EXPECT_EQ("MACRO\nf();",
format("MACRO\nf();"));
// Only if everything is upper case.
EXPECT_EQ("class A : public QObject {\n"
" Q_Object A() {}\n"
"};",
format("class A : public QObject {\n"
" Q_Object\n"
" A() {\n}\n"
"} ;"));
// Only if the next line can actually start an unwrapped line.
EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;",
format("SOME_WEIRD_LOG_MACRO\n"
"<< SomeThing;"));
verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), "
"(n, buffers))\n", getChromiumStyle(FormatStyle::LK_Cpp));
}
TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) {
EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
"INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
"INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
"class X {};\n"
"INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
"int *createScopDetectionPass() { return 0; }",
format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
" INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
" INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
" class X {};\n"
" INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
" int *createScopDetectionPass() { return 0; }"));
// FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as
// braces, so that inner block is indented one level more.
EXPECT_EQ("int q() {\n"
" IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
" IPC_MESSAGE_HANDLER(xxx, qqq)\n"
" IPC_END_MESSAGE_MAP()\n"
"}",
format("int q() {\n"
" IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
" IPC_MESSAGE_HANDLER(xxx, qqq)\n"
" IPC_END_MESSAGE_MAP()\n"
"}"));
// Same inside macros.
EXPECT_EQ("#define LIST(L) \\\n"
" L(A) \\\n"
" L(B) \\\n"
" L(C)",
format("#define LIST(L) \\\n"
" L(A) \\\n"
" L(B) \\\n"
" L(C)",
getGoogleStyle()));
// These must not be recognized as macros.
EXPECT_EQ("int q() {\n"
" f(x);\n"
" f(x) {}\n"
" f(x)->g();\n"
" f(x)->*g();\n"
" f(x).g();\n"
" f(x) = x;\n"
" f(x) += x;\n"
" f(x) -= x;\n"
" f(x) *= x;\n"
" f(x) /= x;\n"
" f(x) %= x;\n"
" f(x) &= x;\n"
" f(x) |= x;\n"
" f(x) ^= x;\n"
" f(x) >>= x;\n"
" f(x) <<= x;\n"
" f(x)[y].z();\n"
" LOG(INFO) << x;\n"
" ifstream(x) >> x;\n"
"}\n",
format("int q() {\n"
" f(x)\n;\n"
" f(x)\n {}\n"
" f(x)\n->g();\n"
" f(x)\n->*g();\n"
" f(x)\n.g();\n"
" f(x)\n = x;\n"
" f(x)\n += x;\n"
" f(x)\n -= x;\n"
" f(x)\n *= x;\n"
" f(x)\n /= x;\n"
" f(x)\n %= x;\n"
" f(x)\n &= x;\n"
" f(x)\n |= x;\n"
" f(x)\n ^= x;\n"
" f(x)\n >>= x;\n"
" f(x)\n <<= x;\n"
" f(x)\n[y].z();\n"
" LOG(INFO)\n << x;\n"
" ifstream(x)\n >> x;\n"
"}\n"));
EXPECT_EQ("int q() {\n"
" F(x)\n"
" if (1) {\n"
" }\n"
" F(x)\n"
" while (1) {\n"
" }\n"
" F(x)\n"
" G(x);\n"
" F(x)\n"
" try {\n"
" Q();\n"
" } catch (...) {\n"
" }\n"
"}\n",
format("int q() {\n"
"F(x)\n"
"if (1) {}\n"
"F(x)\n"
"while (1) {}\n"
"F(x)\n"
"G(x);\n"
"F(x)\n"
"try { Q(); } catch (...) {}\n"
"}\n"));
EXPECT_EQ("class A {\n"
" A() : t(0) {}\n"
" A(int i) noexcept() : {}\n"
" A(X x)\n" // FIXME: function-level try blocks are broken.
" try : t(0) {\n"
" } catch (...) {\n"
" }\n"
"};",
format("class A {\n"
" A()\n : t(0) {}\n"
" A(int i)\n noexcept() : {}\n"
" A(X x)\n"
" try : t(0) {} catch (...) {}\n"
"};"));
EXPECT_EQ(
"class SomeClass {\n"
"public:\n"
" SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
"};",
format("class SomeClass {\n"
"public:\n"
" SomeClass()\n"
" EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
"};"));
EXPECT_EQ(
"class SomeClass {\n"
"public:\n"
" SomeClass()\n"
" EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
"};",
format("class SomeClass {\n"
"public:\n"
" SomeClass()\n"
" EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
"};", getLLVMStyleWithColumns(40)));
}
TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) {
verifyFormat("#define A \\\n"
" f({ \\\n"
" g(); \\\n"
" });", getLLVMStyleWithColumns(11));
}
TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}"));
}
TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
verifyFormat("{\n { a #c; }\n}");
}
TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
EXPECT_EQ("#define A \\\n { \\\n {\nint i;",
format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
EXPECT_EQ("#define A \\\n } \\\n }\nint i;",
format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
}
TEST_F(FormatTest, EscapedNewlineAtStartOfToken) {
EXPECT_EQ(
"#define A \\\n int i; \\\n int j;",
format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11)));
EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
}
TEST_F(FormatTest, NoEscapedNewlineHandlingInBlockComments) {
EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/"));
}
TEST_F(FormatTest, DontCrashOnBlockComments) {
EXPECT_EQ(
"int xxxxxxxxx; /* "
"yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n"
"zzzzzz\n"
"0*/",
format("int xxxxxxxxx; /* "
"yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n"
"0*/"));
}
TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
verifyFormat("#define A \\\n"
" int v( \\\n"
" a); \\\n"
" int i;",
getLLVMStyleWithColumns(11));
}
TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
EXPECT_EQ(
"#define ALooooooooooooooooooooooooooooooooooooooongMacro("
" \\\n"
" aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
"\n"
"AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
" aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro("
"\\\n"
"aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
" \n"
" AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
" aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
}
TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
EXPECT_EQ("int\n"
"#define A\n"
" a;",
format("int\n#define A\na;"));
verifyFormat("functionCallTo(\n"
" someOtherFunction(\n"
" withSomeParameters, whichInSequence,\n"
" areLongerThanALine(andAnotherCall,\n"
"#define A B\n"
" withMoreParamters,\n"
" whichStronglyInfluenceTheLayout),\n"
" andMoreParameters),\n"
" trailing);",
getLLVMStyleWithColumns(69));
verifyFormat("Foo::Foo()\n"
"#ifdef BAR\n"
" : baz(0)\n"
"#endif\n"
"{\n"
"}");
verifyFormat("void f() {\n"
" if (true)\n"
"#ifdef A\n"
" f(42);\n"
" x();\n"
"#else\n"
" g();\n"
" x();\n"
"#endif\n"
"}");
verifyFormat("void f(param1, param2,\n"
" param3,\n"
"#ifdef A\n"
" param4(param5,\n"
"#ifdef A1\n"
" param6,\n"
"#ifdef A2\n"
" param7),\n"
"#else\n"
" param8),\n"
" param9,\n"
"#endif\n"
" param10,\n"
"#endif\n"
" param11)\n"
"#else\n"
" param12)\n"
"#endif\n"
"{\n"
" x();\n"
"}",
getLLVMStyleWithColumns(28));
verifyFormat("#if 1\n"
"int i;");
verifyFormat(
"#if 1\n"
"#endif\n"
"#if 1\n"
"#else\n"
"#endif\n");
verifyFormat("DEBUG({\n"
" return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
"});\n"
"#if a\n"
"#else\n"
"#endif");
verifyFormat("void f(\n"
"#if A\n"
" );\n"
"#else\n"
"#endif");
}
TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) {
verifyFormat("#endif\n"
"#if B");
}
TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) {
FormatStyle SingleLine = getLLVMStyle();
SingleLine.AllowShortIfStatementsOnASingleLine = true;
verifyFormat(
"#if 0\n"
"#elif 1\n"
"#endif\n"
"void foo() {\n"
" if (test) foo2();\n"
"}",
SingleLine);
}
TEST_F(FormatTest, LayoutBlockInsideParens) {
verifyFormat("functionCall({ int i; });");
verifyFormat("functionCall({\n"
" int i;\n"
" int j;\n"
"});");
verifyFormat("functionCall({\n"
" int i;\n"
" int j;\n"
"}, aaaa, bbbb, cccc);");
verifyFormat("functionA(functionB({\n"
" int i;\n"
" int j;\n"
" }),\n"
" aaaa, bbbb, cccc);");
verifyFormat("functionCall(\n"
" {\n"
" int i;\n"
" int j;\n"
" },\n"
" aaaa, bbbb, // comment\n"
" cccc);");
verifyFormat("functionA(functionB({\n"
" int i;\n"
" int j;\n"
" }),\n"
" aaaa, bbbb, // comment\n"
" cccc);");
verifyFormat("functionCall(aaaa, bbbb, { int i; });");
verifyFormat("functionCall(aaaa, bbbb, {\n"
" int i;\n"
" int j;\n"
"});");
verifyFormat(
"Aaa(\n" // FIXME: There shouldn't be a linebreak here.
" {\n"
" int i; // break\n"
" },\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
" ccccccccccccccccc));");
verifyFormat("DEBUG({\n"
" if (a)\n"
" f();\n"
"});");
}
TEST_F(FormatTest, LayoutBlockInsideStatement) {
EXPECT_EQ("SOME_MACRO { int i; }\n"
"int i;",
format(" SOME_MACRO {int i;} int i;"));
}
TEST_F(FormatTest, LayoutNestedBlocks) {
verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
" struct s {\n"
" int i;\n"
" };\n"
" s kBitsToOs[] = {{10}};\n"
" for (int i = 0; i < 10; ++i)\n"
" return;\n"
"}");
verifyFormat("call(parameter, {\n"
" something();\n"
" // Comment using all columns.\n"
" somethingelse();\n"
"});",
getLLVMStyleWithColumns(40));
verifyFormat("DEBUG( //\n"
" { f(); }, a);");
verifyFormat("DEBUG( //\n"
" {\n"
" f(); //\n"
" },\n"
" a);");
EXPECT_EQ("call(parameter, {\n"
" something();\n"
" // Comment too\n"
" // looooooooooong.\n"
" somethingElse();\n"
"});",
format("call(parameter, {\n"
" something();\n"
" // Comment too looooooooooong.\n"
" somethingElse();\n"
"});",
getLLVMStyleWithColumns(29)));
EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });"));
EXPECT_EQ("DEBUG({ // comment\n"
" int i;\n"
"});",
format("DEBUG({ // comment\n"
"int i;\n"
"});"));
EXPECT_EQ("DEBUG({\n"
" int i;\n"
"\n"
" // comment\n"
" int j;\n"
"});",
format("DEBUG({\n"
" int i;\n"
"\n"
" // comment\n"
" int j;\n"
"});"));
verifyFormat("DEBUG({\n"
" if (a)\n"
" return;\n"
"});");
verifyGoogleFormat("DEBUG({\n"
" if (a) return;\n"
"});");
FormatStyle Style = getGoogleStyle();
Style.ColumnLimit = 45;
verifyFormat("Debug(aaaaa, {\n"
" if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n"
"}, a);",
Style);
verifyNoCrash("^{v^{a}}");
}
TEST_F(FormatTest, IndividualStatementsOfNestedBlocks) {
EXPECT_EQ("DEBUG({\n"
" int i;\n"
" int j;\n"
"});",
format("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
20, 1, getLLVMStyle()));
EXPECT_EQ("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
format("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
41, 1, getLLVMStyle()));
EXPECT_EQ("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
format("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
41, 1, getLLVMStyle()));
EXPECT_EQ("DEBUG({\n"
" int i;\n"
" int j;\n"
"});",
format("DEBUG( {\n"
" int i;\n"
" int j;\n"
"} ) ;",
20, 1, getLLVMStyle()));
EXPECT_EQ("Debug({\n"
" if (aaaaaaaaaaaaaaaaaaaaaaaa)\n"
" return;\n"
" },\n"
" a);",
format("Debug({\n"
" if (aaaaaaaaaaaaaaaaaaaaaaaa)\n"
" return;\n"
" },\n"
" a);",
50, 1, getLLVMStyle()));
EXPECT_EQ("DEBUG({\n"
" DEBUG({\n"
" int a;\n"
" int b;\n"
" }) ;\n"
"});",
format("DEBUG({\n"
" DEBUG({\n"
" int a;\n"
" int b;\n" // Format this line only.
" }) ;\n" // Don't touch this line.
"});",
35, 0, getLLVMStyle()));
EXPECT_EQ("DEBUG({\n"
" int a; //\n"
"});",
format("DEBUG({\n"
" int a; //\n"
"});",
0, 0, getLLVMStyle()));
}
TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
EXPECT_EQ("{}", format("{}"));
verifyFormat("enum E {};");
verifyFormat("enum E {}");
}
//===----------------------------------------------------------------------===//
// Line break tests.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, PreventConfusingIndents) {
verifyFormat(
"void f() {\n"
" SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
" parameter, parameter, parameter)),\n"
" SecondLongCall(parameter));\n"
"}");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" [aaaaaaaaaaaaaaaaaaaaaaaa\n"
" [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
" [aaaaaaaaaaaaaaaaaaaaaaaa]];");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
" aaaaaaaaaaaaaaaaaaaaaaaa<\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
" aaaaaaaaaaaaaaaaaaaaaaaa>;");
verifyFormat("int a = bbbb && ccc && fffff(\n"
"#define A Just forcing a new line\n"
" ddd);");
}
TEST_F(FormatTest, LineBreakingInBinaryExpressions) {
verifyFormat(
"bool aaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n"
" bbbbbbbb();");
verifyFormat(
"bool aaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n"
" bbbbbbbb();");
verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n"
" ccccccccc == ddddddddddd;");
verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n"
" ccccccccc == ddddddddddd;");
verifyFormat(
"bool aaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n"
" ccccccccc == ddddddddddd;");
verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
" aaaaaa) &&\n"
" bbbbbb && cccccc;");
verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
" aaaaaa) >>\n"
" bbbbbb;");
verifyFormat("Whitespaces.addUntouchableComment(\n"
" SourceMgr.getSpellingColumnNumber(\n"
" TheLine.Last->FormatTok.Tok.getLocation()) -\n"
" 1);");
verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n"
" cccccc) {\n}");
verifyFormat("b = a &&\n"
" // Comment\n"
" b.c && d;");
// If the LHS of a comparison is not a binary expression itself, the
// additional linebreak confuses many people.
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n"
"}");
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
"}");
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
"}");
// Even explicit parentheses stress the precedence enough to make the
// additional break unnecessary.
verifyFormat(
"if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
"}");
// This cases is borderline, but with the indentation it is still readable.
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
"}",
getLLVMStyleWithColumns(75));
// If the LHS is a binary expression, we should still use the additional break
// as otherwise the formatting hides the operator precedence.
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
" 5) {\n"
"}");
FormatStyle OnePerLine = getLLVMStyle();
OnePerLine.BinPackParameters = false;
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}",
OnePerLine);
}
TEST_F(FormatTest, ExpressionIndentation) {
verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n"
" ccccccccccccccccccccccccccccccccccccccccc;");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
verifyFormat("if () {\n"
"} else if (aaaaa &&\n"
" bbbbb > // break\n"
" ccccc) {\n"
"}");
// Presence of a trailing comment used to change indentation of b.
verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n"
" b;\n"
"return aaaaaaaaaaaaaaaaaaa +\n"
" b; //",
getLLVMStyleWithColumns(30));
}
TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) {
// Not sure what the best system is here. Like this, the LHS can be found
// immediately above an operator (everything with the same or a higher
// indent). The RHS is aligned right of the operator and so compasses
// everything until something with the same indent as the operator is found.
// FIXME: Is this a good system?
FormatStyle Style = getLLVMStyle();
Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
verifyFormat(
"bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" > ccccccccccccccccccccccccccccccccccccccccc;",
Style);
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
Style);
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
Style);
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
Style);
verifyFormat("if () {\n"
"} else if (aaaaa\n"
" && bbbbb // break\n"
" > ccccc) {\n"
"}",
Style);
verifyFormat("return (a)\n"
" // comment\n"
" + b;",
Style);
verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" + cc;",
Style);
// Forced by comments.
verifyFormat(
"unsigned ContentSize =\n"
" sizeof(int16_t) // DWARF ARange version number\n"
" + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
" + sizeof(int8_t) // Pointer Size (in bytes)\n"
" + sizeof(int8_t); // Segment Size (in bytes)");
verifyFormat("return boost::fusion::at_c<0>(iiii).second\n"
" == boost::fusion::at_c<1>(iiii).second;",
Style);
Style.ColumnLimit = 60;
verifyFormat("zzzzzzzzzz\n"
" = bbbbbbbbbbbbbbbbb\n"
" >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
}
TEST_F(FormatTest, NoOperandAlignment) {
FormatStyle Style = getLLVMStyle();
Style.AlignOperands = false;
Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
verifyFormat(
"bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" > ccccccccccccccccccccccccccccccccccccccccc;",
Style);
verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" + cc;",
Style);
verifyFormat("int a = aa\n"
" + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
" * cccccccccccccccccccccccccccccccccccc;",
Style);
Style.AlignAfterOpenBracket = false;
verifyFormat("return (a > b\n"
" // comment1\n"
" // comment2\n"
" || c);",
Style);
}
TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) {
FormatStyle Style = getLLVMStyle();
Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
Style);
}
TEST_F(FormatTest, ConstructorInitializers) {
verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
getLLVMStyleWithColumns(45));
verifyFormat("Constructor()\n"
" : Inttializer(FitsOnTheLine) {}",
getLLVMStyleWithColumns(44));
verifyFormat("Constructor()\n"
" : Inttializer(FitsOnTheLine) {}",
getLLVMStyleWithColumns(43));
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaa() {}");
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
verifyFormat("Constructor(int Parameter = 0)\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n"
"}",
getLLVMStyleWithColumns(60));
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}");
// Here a line could be saved by splitting the second initializer onto two
// lines, but that is not desirable.
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaa(aaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
FormatStyle OnePerLine = getLLVMStyle();
OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
verifyFormat("SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
OnePerLine);
verifyFormat("SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
OnePerLine);
verifyFormat("MyClass::MyClass(int var)\n"
" : some_var_(var), // 4 space indent\n"
" some_other_var_(var + 1) { // lined up\n"
"}",
OnePerLine);
verifyFormat("Constructor()\n"
" : aaaaa(aaaaaa),\n"
" aaaaa(aaaaaa),\n"
" aaaaa(aaaaaa),\n"
" aaaaa(aaaaaa),\n"
" aaaaa(aaaaaa) {}",
OnePerLine);
verifyFormat("Constructor()\n"
" : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaa) {}",
OnePerLine);
EXPECT_EQ("Constructor()\n"
" : // Comment forcing unwanted break.\n"
" aaaa(aaaa) {}",
format("Constructor() :\n"
" // Comment forcing unwanted break.\n"
" aaaa(aaaa) {}"));
}
TEST_F(FormatTest, MemoizationTests) {
// This breaks if the memoization lookup does not take \c Indent and
// \c LastSpace into account.
verifyFormat(
"extern CFRunLoopTimerRef\n"
"CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n"
" CFTimeInterval interval, CFOptionFlags flags,\n"
" CFIndex order, CFRunLoopTimerCallBack callout,\n"
" CFRunLoopTimerContext *context) {}");
// Deep nesting somewhat works around our memoization.
verifyFormat(
"aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
" aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
" aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
" aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
" aaaaa())))))))))))))))))))))))))))))))))))))));",
getLLVMStyleWithColumns(65));
verifyFormat(
"aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa(\n"
" aaaaa,\n"
" aaaaa))))))))))));",
getLLVMStyleWithColumns(65));
verifyFormat(
"a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(), a), a), a), a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a),\n"
" a)",
getLLVMStyleWithColumns(65));
// This test takes VERY long when memoization is broken.
FormatStyle OnePerLine = getLLVMStyle();
OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
OnePerLine.BinPackParameters = false;
std::string input = "Constructor()\n"
" : aaaa(a,\n";
for (unsigned i = 0, e = 80; i != e; ++i) {
input += " a,\n";
}
input += " a) {}";
verifyFormat(input, OnePerLine);
}
TEST_F(FormatTest, BreaksAsHighAsPossible) {
verifyFormat(
"void f() {\n"
" if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
" (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
" f();\n"
"}");
verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
" Intervals[i - 1].getRange().getLast()) {\n}");
}
TEST_F(FormatTest, BreaksFunctionDeclarations) {
// Principially, we break function declarations in a certain order:
// 1) break amongst arguments.
verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n"
" Cccccccccccccc cccccccccccccc);");
verifyFormat(
"template <class TemplateIt>\n"
"SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n"
" TemplateIt *stop) {}");
// 2) break after return type.
verifyFormat(
"Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);",
getGoogleStyle());
// 3) break after (.
verifyFormat(
"Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n"
" Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);",
getGoogleStyle());
// 4) break before after nested name specifiers.
verifyFormat(
"Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"SomeClasssssssssssssssssssssssssssssssssssssss::\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);",
getGoogleStyle());
// However, there are exceptions, if a sufficient amount of lines can be
// saved.
// FIXME: The precise cut-offs wrt. the number of saved lines might need some
// more adjusting.
verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc);");
verifyFormat(
"Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);",
getGoogleStyle());
verifyFormat(
"Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc);");
verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
" Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
// Break after multi-line parameters.
verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" bbbb bbbb);");
verifyFormat("void SomeLoooooooooooongFunction(\n"
" std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" int bbbbbbbbbbbbb);");
// Treat overloaded operators like other functions.
verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
"operator>(const SomeLoooooooooooooooooooooooooogType &other);");
verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
"operator>>(const SomeLooooooooooooooooooooooooogType &other);");
verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
"operator<<(const SomeLooooooooooooooooooooooooogType &other);");
verifyGoogleFormat(
"SomeLoooooooooooooooooooooooooooooogType operator>>(\n"
" const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
verifyGoogleFormat(
"SomeLoooooooooooooooooooooooooooooogType operator<<(\n"
" const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n"
"aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);");
verifyGoogleFormat(
"typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n"
"aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}");
FormatStyle Style = getLLVMStyle();
Style.PointerAlignment = FormatStyle::PAS_Left;
verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}",
Style);
verifyFormat(
"void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
Style);
}
TEST_F(FormatTest, TrailingReturnType) {
verifyFormat("auto foo() -> int;\n");
verifyFormat("struct S {\n"
" auto bar() const -> int;\n"
"};");
verifyFormat("template <size_t Order, typename T>\n"
"auto load_img(const std::string &filename)\n"
" -> alias::tensor<Order, T, mem::tag::cpu> {}");
verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n"
" -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}");
verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}");
// Not trailing return types.
verifyFormat("void f() { auto a = b->c(); }");
}
TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) {
// Avoid breaking before trailing 'const' or other trailing annotations, if
// they are not function-like.
FormatStyle Style = getGoogleStyle();
Style.ColumnLimit = 47;
verifyFormat("void someLongFunction(\n"
" int someLoooooooooooooongParameter) const {\n}",
getLLVMStyleWithColumns(47));
verifyFormat("LoooooongReturnType\n"
"someLoooooooongFunction() const {}",
getLLVMStyleWithColumns(47));
verifyFormat("LoooooongReturnType someLoooooooongFunction()\n"
" const {}",
Style);
verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;");
verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;");
verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaa aaaaaaaaaaaaaaaaaaaa) override final;");
verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n"
" aaaaaaaaaaa aaaaa) const override;");
verifyGoogleFormat(
"virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
" const override;");
// Even if the first parameter has to be wrapped.
verifyFormat("void someLongFunction(\n"
" int someLongParameter) const {}",
getLLVMStyleWithColumns(46));
verifyFormat("void someLongFunction(\n"
" int someLongParameter) const {}",
Style);
verifyFormat("void someLongFunction(\n"
" int someLongParameter) override {}",
Style);
verifyFormat("void someLongFunction(\n"
" int someLongParameter) OVERRIDE {}",
Style);
verifyFormat("void someLongFunction(\n"
" int someLongParameter) final {}",
Style);
verifyFormat("void someLongFunction(\n"
" int someLongParameter) FINAL {}",
Style);
verifyFormat("void someLongFunction(\n"
" int parameter) const override {}",
Style);
Style.BreakBeforeBraces = FormatStyle::BS_Allman;
verifyFormat("void someLongFunction(\n"
" int someLongParameter) const\n"
"{\n"
"}",
Style);
// Unless these are unknown annotations.
verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n"
" aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" LONG_AND_UGLY_ANNOTATION;");
// Breaking before function-like trailing annotations is fine to keep them
// close to their arguments.
verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
" LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
" LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}");
verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n"
" AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);");
verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});");
verifyFormat(
"void aaaaaaaaaaaaaaaaaa()\n"
" __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" __attribute__((unused));");
verifyGoogleFormat(
"bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" GUARDED_BY(aaaaaaaaaaaa);");
verifyGoogleFormat(
"bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" GUARDED_BY(aaaaaaaaaaaa);");
verifyGoogleFormat(
"bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n"
" aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
}
TEST_F(FormatTest, BreaksDesireably) {
verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
" aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
" aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
"}");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat(
"aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
" aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"void f() {\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
"}");
verifyFormat(
"aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat(
"aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat(
"aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
// Indent consistently independent of call expression.
verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n"
" dddddddddddddddddddddddddddddd));\n"
"aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
" dddddddddddddddddddddddddddddd));");
// This test case breaks on an incorrect memoization, i.e. an optimization not
// taking into account the StopAt value.
verifyFormat(
"return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
" (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("{\n {\n {\n"
" Annotation.SpaceRequiredBefore =\n"
" Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
" Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
" }\n }\n}");
// Break on an outer level if there was a break on an inner level.
EXPECT_EQ("f(g(h(a, // comment\n"
" b, c),\n"
" d, e),\n"
" x, y);",
format("f(g(h(a, // comment\n"
" b, c), d, e), x, y);"));
// Prefer breaking similar line breaks.
verifyFormat(
"const int kTrackingOptions = NSTrackingMouseMoved |\n"
" NSTrackingMouseEnteredAndExited |\n"
" NSTrackingActiveAlways;");
}
TEST_F(FormatTest, FormatsDeclarationsOnePerLine) {
FormatStyle NoBinPacking = getGoogleStyle();
NoBinPacking.BinPackParameters = false;
NoBinPacking.BinPackArguments = true;
verifyFormat("void f() {\n"
" f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
"}",
NoBinPacking);
verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n"
" int aaaaaaaaaaaaaaaaaaaa,\n"
" int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
NoBinPacking);
}
TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
FormatStyle NoBinPacking = getGoogleStyle();
NoBinPacking.BinPackParameters = false;
NoBinPacking.BinPackArguments = false;
verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
NoBinPacking);
verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
NoBinPacking);
verifyFormat(
"aaaaaaaa(aaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
" aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
NoBinPacking);
verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaaaaa();",
NoBinPacking);
verifyFormat("void f() {\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n"
"}",
NoBinPacking);
verifyFormat(
"aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaa,\n"
" aaaaaaaaaaaa);",
NoBinPacking);
verifyFormat(
"somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
" ddddddddddddddddddddddddddddd),\n"
" test);",
NoBinPacking);
verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;",
NoBinPacking);
verifyFormat("a(\"a\"\n"
" \"a\",\n"
" a);");
NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
" aaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
NoBinPacking);
verifyFormat(
"void f() {\n"
" aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaa();\n"
"}",
NoBinPacking);
verifyFormat(
"template <class SomeType, class SomeOtherType>\n"
"SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}",
NoBinPacking);
}
TEST_F(FormatTest, AdaptiveOnePerLineFormatting) {
FormatStyle Style = getLLVMStyleWithColumns(15);
Style.ExperimentalAutoDetectBinPacking = true;
EXPECT_EQ("aaa(aaaa,\n"
" aaaa,\n"
" aaaa);\n"
"aaa(aaaa,\n"
" aaaa,\n"
" aaaa);",
format("aaa(aaaa,\n" // one-per-line
" aaaa,\n"
" aaaa );\n"
"aaa(aaaa, aaaa, aaaa);", // inconclusive
Style));
EXPECT_EQ("aaa(aaaa, aaaa,\n"
" aaaa);\n"
"aaa(aaaa, aaaa,\n"
" aaaa);",
format("aaa(aaaa, aaaa,\n" // bin-packed
" aaaa );\n"
"aaa(aaaa, aaaa, aaaa);", // inconclusive
Style));
}
TEST_F(FormatTest, FormatsBuilderPattern) {
verifyFormat(
"return llvm::StringSwitch<Reference::Kind>(name)\n"
" .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
" .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n"
" .StartsWith(\".init\", ORDER_INIT)\n"
" .StartsWith(\".fini\", ORDER_FINI)\n"
" .StartsWith(\".hash\", ORDER_HASH)\n"
" .Default(ORDER_TEXT);\n");
verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
" aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
verifyFormat(
"aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" ->aaaaaaaa(aaaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
" aaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n"
" aaaaaa->aaaaaaaaaaaa()\n"
" ->aaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" ->aaaaaaaaaaaaaaaaa();");
verifyGoogleFormat(
"void f() {\n"
" someo->Add((new util::filetools::Handler(dir))\n"
" ->OnEvent1(NewPermanentCallback(\n"
" this, &HandlerHolderClass::EventHandlerCBA))\n"
" ->OnEvent2(NewPermanentCallback(\n"
" this, &HandlerHolderClass::EventHandlerCBB))\n"
" ->OnEvent3(NewPermanentCallback(\n"
" this, &HandlerHolderClass::EventHandlerCBC))\n"
" ->OnEvent5(NewPermanentCallback(\n"
" this, &HandlerHolderClass::EventHandlerCBD))\n"
" ->OnEvent6(NewPermanentCallback(\n"
" this, &HandlerHolderClass::EventHandlerCBE)));\n"
"}");
verifyFormat(
"aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();");
verifyFormat("aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa();");
verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa();");
verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaa();");
verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n"
" ->aaaaaaaaaaaaaae(0)\n"
" ->aaaaaaaaaaaaaaa();");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
" .has<bbbbbbbbbbbbbbbbbbbbb>();");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();");
// Prefer not to break after empty parentheses.
verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n"
" First->LastNewlineOffset);");
}
TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat(
"if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat(
"if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n"
" ccccccccccccccccccccccccc) {\n}");
verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
" bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
" cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
" dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n"
" bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n"
" cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n"
" dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
" aaaaaaaaaaaaaaa != aa) {\n}");
verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n"
" aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n"
" aaaaaaaaaaaaaaa != aa) {\n}");
}
TEST_F(FormatTest, BreaksAfterAssignments) {
verifyFormat(
"unsigned Cost =\n"
" TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
" SI->getPointerAddressSpaceee());\n");
verifyFormat(
"CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
" Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("unsigned OriginalStartColumn =\n"
" SourceMgr.getSpellingColumnNumber(\n"
" Current.FormatTok.getStartOfNonWhitespace()) -\n"
" 1;");
}
TEST_F(FormatTest, AlignsAfterAssignments) {
verifyFormat(
"int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaa;");
}
TEST_F(FormatTest, AlignsAfterReturn) {
verifyFormat(
"return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
" aaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat(
"return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
" aaaaaaaaaaaaaaaaaaaaaa());");
verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("return\n"
" // true if code is one of a or b.\n"
" code == a || code == b;");
}
TEST_F(FormatTest, AlignsAfterOpenBracket) {
verifyFormat(
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
" aaaaaaaaa aaaaaaa) {}");
verifyFormat(
"SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
" aaaaaaaaaaa aaaaaaaaa);");
verifyFormat(
"SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaa));");
FormatStyle Style = getLLVMStyle();
Style.AlignAfterOpenBracket = false;
verifyFormat(
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}",
Style);
verifyFormat(
"SomeLongVariableName->someVeryLongFunctionName(\n"
" aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);",
Style);
verifyFormat(
"SomeLongVariableName->someFunction(\n"
" foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));",
Style);
verifyFormat(
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
" aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
Style);
verifyFormat(
"SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
" aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat(
"SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));",
Style);
}
TEST_F(FormatTest, ParenthesesAndOperandAlignment) {
FormatStyle Style = getLLVMStyleWithColumns(40);
verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
" bbbbbbbbbbbbbbbbbbbbbb);",
Style);
Style.AlignAfterOpenBracket = true;
Style.AlignOperands = false;
verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
" bbbbbbbbbbbbbbbbbbbbbb);",
Style);
Style.AlignAfterOpenBracket = false;
Style.AlignOperands = true;
verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
" bbbbbbbbbbbbbbbbbbbbbb);",
Style);
Style.AlignAfterOpenBracket = false;
Style.AlignOperands = false;
verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
" bbbbbbbbbbbbbbbbbbbbbb);",
Style);
}
TEST_F(FormatTest, BreaksConditionalExpressions) {
verifyFormat(
"aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
" : aaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa);");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaa;");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaa;");
verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
" aaaaaaaaa\n"
" ? b\n"
" : c);");
verifyFormat("return aaaa == bbbb\n"
" // comment\n"
" ? aaaa\n"
" : bbbb;");
verifyFormat(
"unsigned Indent =\n"
" format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n"
" ? IndentForLevel[TheLine.Level]\n"
" : TheLine * 2,\n"
" TheLine.InPPDirective, PreviousEndOfLineColumn);",
getLLVMStyleWithColumns(70));
verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
" ? aaaaaaaaaaaaaaa\n"
" : bbbbbbbbbbbbbbb //\n"
" ? ccccccccccccccc\n"
" : ddddddddddddddd;");
verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
" ? aaaaaaaaaaaaaaa\n"
" : (bbbbbbbbbbbbbbb //\n"
" ? ccccccccccccccc\n"
" : ddddddddddddddd);");
verifyFormat(
"int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaa +\n"
" aaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaa;");
verifyFormat(
"aaaaaa = aaaaaaaaaaaa\n"
" ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackArguments = false;
verifyFormat(
"void f() {\n"
" g(aaa,\n"
" aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ? aaaaaaaaaaaaaaa\n"
" : aaaaaaaaaaaaaaa);\n"
"}",
NoBinPacking);
verifyFormat(
"void f() {\n"
" g(aaa,\n"
" aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" ?: aaaaaaaaaaaaaaa);\n"
"}",
NoBinPacking);
verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n"
" // comment.\n"
" ccccccccccccccccccccccccccccccccccccccc\n"
" ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);");
// Assignments in conditional expressions. Apparently not uncommon :-(.
verifyFormat("return a != b\n"
" // comment\n"
" ? a = b\n"
" : a = b;");
verifyFormat("return a != b\n"
" // comment\n"
" ? a = a != b\n"
" // comment\n"
" ? a = b\n"
" : a\n"
" : a;\n");
verifyFormat("return a != b\n"
" // comment\n"
" ? a\n"
" : a = a != b\n"
" // comment\n"
" ? a = b\n"
" : a;");
}
TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) {
FormatStyle Style = getLLVMStyle();
Style.BreakBeforeTernaryOperators = false;
Style.ColumnLimit = 70;
verifyFormat(
"aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat(
"aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n"
" aaaaaaaaaaaaa);",
Style);
verifyFormat(
"aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa);",
Style);
verifyFormat(
"aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaa);",
Style);
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
Style);
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa;",
Style);
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
Style);
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
" aaaaaaaaaaaaaaa :\n"
" aaaaaaaaaaaaaaa;",
Style);
verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
" aaaaaaaaa ?\n"
" b :\n"
" c);",
Style);
verifyFormat(
"unsigned Indent =\n"
" format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n"
" IndentForLevel[TheLine.Level] :\n"
" TheLine * 2,\n"
" TheLine.InPPDirective, PreviousEndOfLineColumn);",
Style);
verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
" aaaaaaaaaaaaaaa :\n"
" bbbbbbbbbbbbbbb ? //\n"
" ccccccccccccccc :\n"
" ddddddddddddddd;",
Style);
verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
" aaaaaaaaaaaaaaa :\n"
" (bbbbbbbbbbbbbbb ? //\n"
" ccccccccccccccc :\n"
" ddddddddddddddd);",
Style);
}
TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
" aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
verifyFormat("bool a = true, b = false;");
verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
" bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
verifyFormat(
"bool aaaaaaaaaaaaaaaaaaaaa =\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
" d = e && f;");
verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n"
" c = cccccccccccccccccccc, d = dddddddddddddddddddd;");
verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
" *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;");
verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n"
" ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;");
FormatStyle Style = getGoogleStyle();
Style.PointerAlignment = FormatStyle::PAS_Left;
Style.DerivePointerAlignment = false;
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n"
" *b = bbbbbbbbbbbbbbbbbbb;",
Style);
verifyFormat(
"aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
" *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;",
Style);
}
TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
verifyFormat("arr[foo ? bar : baz];");
verifyFormat("f()[foo ? bar : baz];");
verifyFormat("(a + b)[foo ? bar : baz];");
verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
}
TEST_F(FormatTest, AlignsStringLiterals) {
verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
" \"short literal\");");
verifyFormat(
"looooooooooooooooooooooooongFunction(\n"
" \"short literal\"\n"
" \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
verifyFormat("someFunction(\"Always break between multi-line\"\n"
" \" string literals\",\n"
" and, other, parameters);");
EXPECT_EQ("fun + \"1243\" /* comment */\n"
" \"5678\";",
format("fun + \"1243\" /* comment */\n"
" \"5678\";",
getLLVMStyleWithColumns(28)));
EXPECT_EQ(
"aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
" \"aaaaaaaaaaaaaaaaaaaaa\"\n"
" \"aaaaaaaaaaaaaaaa\";",
format("aaaaaa ="
"\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaa\" "
"\"aaaaaaaaaaaaaaaa\";"));
verifyFormat("a = a + \"a\"\n"
" \"a\"\n"
" \"a\";");
verifyFormat("f(\"a\", \"b\"\n"
" \"c\");");
verifyFormat(
"#define LL_FORMAT \"ll\"\n"
"printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
" \"d, ddddddddd: %\" LL_FORMAT \"d\");");
verifyFormat("#define A(X) \\\n"
" \"aaaaa\" #X \"bbbbbb\" \\\n"
" \"ccccc\"",
getLLVMStyleWithColumns(23));
verifyFormat("#define A \"def\"\n"
"f(\"abc\" A \"ghi\"\n"
" \"jkl\");");
verifyFormat("f(L\"a\"\n"
" L\"b\")");
verifyFormat("#define A(X) \\\n"
" L\"aaaaa\" #X L\"bbbbbb\" \\\n"
" L\"ccccc\"",
getLLVMStyleWithColumns(25));
}
TEST_F(FormatTest, AlwaysBreakAfterDefinitionReturnType) {
FormatStyle AfterType = getLLVMStyle();
AfterType.AlwaysBreakAfterDefinitionReturnType = true;
verifyFormat("const char *\n"
"f(void) {\n" // Break here.
" return \"\";\n"
"}\n"
"const char *bar(void);\n", // No break here.
AfterType);
verifyFormat("template <class T>\n"
"T *\n"
"f(T &c) {\n" // Break here.
" return NULL;\n"
"}\n"
"template <class T> T *f(T &c);\n", // No break here.
AfterType);
AfterType.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
verifyFormat("const char *\n"
"f(void)\n" // Break here.
"{\n"
" return \"\";\n"
"}\n"
"const char *bar(void);\n", // No break here.
AfterType);
verifyFormat("template <class T>\n"
"T *\n" // Problem here: no line break
"f(T &c)\n" // Break here.
"{\n"
" return NULL;\n"
"}\n"
"template <class T> T *f(T &c);\n", // No break here.
AfterType);
}
TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) {
FormatStyle NoBreak = getLLVMStyle();
NoBreak.AlwaysBreakBeforeMultilineStrings = false;
FormatStyle Break = getLLVMStyle();
Break.AlwaysBreakBeforeMultilineStrings = true;
verifyFormat("aaaa = \"bbbb\"\n"
" \"cccc\";",
NoBreak);
verifyFormat("aaaa =\n"
" \"bbbb\"\n"
" \"cccc\";",
Break);
verifyFormat("aaaa(\"bbbb\"\n"
" \"cccc\");",
NoBreak);
verifyFormat("aaaa(\n"
" \"bbbb\"\n"
" \"cccc\");",
Break);
verifyFormat("aaaa(qqq, \"bbbb\"\n"
" \"cccc\");",
NoBreak);
verifyFormat("aaaa(qqq,\n"
" \"bbbb\"\n"
" \"cccc\");",
Break);
verifyFormat("aaaa(qqq,\n"
" L\"bbbb\"\n"
" L\"cccc\");",
Break);
// As we break before unary operators, breaking right after them is bad.
verifyFormat("string foo = abc ? \"x\"\n"
" \"blah blah blah blah blah blah\"\n"
" : \"y\";",
Break);
// Don't break if there is no column gain.
verifyFormat("f(\"aaaa\"\n"
" \"bbbb\");",
Break);
// Treat literals with escaped newlines like multi-line string literals.
EXPECT_EQ("x = \"a\\\n"
"b\\\n"
"c\";",
format("x = \"a\\\n"
"b\\\n"
"c\";",
NoBreak));
EXPECT_EQ("x =\n"
" \"a\\\n"
"b\\\n"
"c\";",
format("x = \"a\\\n"
"b\\\n"
"c\";",
Break));
// Exempt ObjC strings for now.
EXPECT_EQ("NSString *const kString = @\"aaaa\"\n"
" \"bbbb\";",
format("NSString *const kString = @\"aaaa\"\n"
"\"bbbb\";",
Break));
Break.ColumnLimit = 0;
verifyFormat("const char *hello = \"hello llvm\";", Break);
}
TEST_F(FormatTest, AlignsPipes) {
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
" \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
" << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
verifyFormat(
"aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"llvm::errs() << \"a: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
verifyFormat(
"llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("return out << \"somepacket = {\\n\"\n"
" << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
" << \" bbbb = \" << pkt.bbbb << \"\\n\"\n"
" << \" cccccc = \" << pkt.cccccc << \"\\n\"\n"
" << \" ddd = [\" << pkt.ddd << \"]\\n\"\n"
" << \"}\";");
verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;");
verifyFormat(
"llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
" << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
" << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
" << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
" << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n"
" << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
verifyFormat(
"void f() {\n"
" llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n"
" << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
"}");
verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n"
" << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();");
// Breaking before the first "<<" is generally not desirable.
verifyFormat(
"llvm::errs()\n"
" << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
getLLVMStyleWithColumns(70));
verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaaaaa: \"\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << \"aaaaaaaaaaaaaaaaaaa: \"\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
getLLVMStyleWithColumns(70));
// But sometimes, breaking before the first "<<" is desirable.
verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);");
verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n"
" << BEF << IsTemplate << Description << E->getType();");
verifyFormat(
"llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
// Incomplete string literal.
EXPECT_EQ("llvm::errs() << \"\n"
" << a;",
format("llvm::errs() << \"\n<<a;"));
verifyFormat("void f() {\n"
" CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n"
" << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n"
"}");
// Handle 'endl'.
verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n"
" << bbbbbbbbbbbbbbbbbbbbbb << endl;");
verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;");
}
TEST_F(FormatTest, UnderstandsEquals) {
verifyFormat(
"aaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat(
"if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
verifyFormat(
"if (a) {\n"
" f();\n"
"} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
"}");
verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" 100000000 + 10000000) {\n}");
}
TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
" .looooooooooooooooooooooooooooooooooooooongFunction();");
verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
" ->looooooooooooooooooooooooooooooooooooooongFunction();");
verifyFormat(
"LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
" Parameter2);");
verifyFormat(
"ShortObject->shortFunction(\n"
" LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
" LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
verifyFormat("loooooooooooooongFunction(\n"
" LoooooooooooooongObject->looooooooooooooooongFunction());");
verifyFormat(
"function(LoooooooooooooooooooooooooooooooooooongObject\n"
" ->loooooooooooooooooooooooooooooooooooooooongFunction());");
verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
" .WillRepeatedly(Return(SomeValue));");
verifyFormat("void f() {\n"
" EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
" .Times(2)\n"
" .WillRepeatedly(Return(SomeValue));\n"
"}");
verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n"
" ccccccccccccccccccccccc);");
verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaa(aaaaa),\n"
" aaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("void f() {\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n"
"}");
verifyFormat(
"aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n"
"}");
// Here, it is not necessary to wrap at "." or "->".
verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
" aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
verifyFormat(
"aaaaaaaaaaa->aaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n"
" aaaaaaaaa()->aaaaaa()->aaaaa());");
verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n"
" aaaaaaaaa()->aaaaaa()->aaaaa());");
verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" .a();");
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
NoBinPacking);
// If there is a subsequent call, change to hanging indentation.
verifyFormat(
"aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));");
verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
}
TEST_F(FormatTest, WrapsTemplateDeclarations) {
verifyFormat("template <typename T>\n"
"virtual void loooooooooooongFunction(int Param1, int Param2);");
verifyFormat("template <typename T>\n"
"// T should be one of {A, B}.\n"
"virtual void loooooooooooongFunction(int Param1, int Param2);");
verifyFormat(
"template <typename T>\n"
"using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
verifyFormat("template <typename T>\n"
"void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
" int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
verifyFormat(
"template <typename T>\n"
"void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
" int Paaaaaaaaaaaaaaaaaaaaram2);");
verifyFormat(
"template <typename T>\n"
"aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("template <typename T>\n"
"void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" int aaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"template <typename T1, typename T2 = char, typename T3 = char,\n"
" typename T4 = char>\n"
"void f();");
verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n"
" template <typename> class cccccccccccccccccccccc,\n"
" typename ddddddddddddd>\n"
"class C {};");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("void f() {\n"
" a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
" a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n"
"}");
verifyFormat("template <typename T> class C {};");
verifyFormat("template <typename T> void f();");
verifyFormat("template <typename T> void f() {}");
verifyFormat(
"aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n"
" new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n"
" bbbbbbbbbbbbbbbbbbbbbbbb);",
getLLVMStyleWithColumns(72));
EXPECT_EQ("static_cast<A< //\n"
" B> *>(\n"
"\n"
" );",
format("static_cast<A<//\n"
" B>*>(\n"
"\n"
" );"));
verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);");
FormatStyle AlwaysBreak = getLLVMStyle();
AlwaysBreak.AlwaysBreakTemplateDeclarations = true;
verifyFormat("template <typename T>\nclass C {};", AlwaysBreak);
verifyFormat("template <typename T>\nvoid f();", AlwaysBreak);
verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak);
verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
" ccccccccccccccccccccccccccccccccccccccccccccccc);");
verifyFormat("template <template <typename> class Fooooooo,\n"
" template <typename> class Baaaaaaar>\n"
"struct C {};",
AlwaysBreak);
verifyFormat("template <typename T> // T can be A, B or C.\n"
"struct C {};",
AlwaysBreak);
}
TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
// FIXME: Should we have the extra indent after the second break?
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat(
"aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
" cccccccccccccccccccccccccccccccccccccccccccccc());");
// Breaking at nested name specifiers is generally not desirable.
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat(
"aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaa);",
getLLVMStyleWithColumns(74));
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
}
TEST_F(FormatTest, UnderstandsTemplateParameters) {
verifyFormat("A<int> a;");
verifyFormat("A<A<A<int>>> a;");
verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
verifyFormat("bool x = a < 1 || 2 > a;");
verifyFormat("bool x = 5 < f<int>();");
verifyFormat("bool x = f<int>() > 5;");
verifyFormat("bool x = 5 < a<int>::x;");
verifyFormat("bool x = a < 4 ? a > 2 : false;");
verifyFormat("bool x = f() ? a < 2 : a > 2;");
verifyGoogleFormat("A<A<int>> a;");
verifyGoogleFormat("A<A<A<int>>> a;");
verifyGoogleFormat("A<A<A<A<int>>>> a;");
verifyGoogleFormat("A<A<int> > a;");
verifyGoogleFormat("A<A<A<int> > > a;");
verifyGoogleFormat("A<A<A<A<int> > > > a;");
verifyGoogleFormat("A<::A<int>> a;");
verifyGoogleFormat("A<::A> a;");
verifyGoogleFormat("A< ::A> a;");
verifyGoogleFormat("A< ::A<int> > a;");
EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle()));
EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle()));
verifyFormat("A<A>> a;", getChromiumStyle(FormatStyle::LK_Cpp));
verifyFormat("test >> a >> b;");
verifyFormat("test << a >> b;");
verifyFormat("f<int>();");
verifyFormat("template <typename T> void f() {}");
verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;");
// Not template parameters.
verifyFormat("return a < b && c > d;");
verifyFormat("void f() {\n"
" while (a < b && c > d) {\n"
" }\n"
"}");
verifyFormat("template <typename... Types>\n"
"typename enable_if<0 < sizeof...(Types)>::type Foo() {}");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);",
getLLVMStyleWithColumns(60));
verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");");
verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}");
}
TEST_F(FormatTest, UnderstandsBinaryOperators) {
verifyFormat("COMPARE(a, ==, b);");
}
TEST_F(FormatTest, UnderstandsPointersToMembers) {
verifyFormat("int A::*x;");
verifyFormat("int (S::*func)(void *);");
verifyFormat("void f() { int (S::*func)(void *); }");
verifyFormat("typedef bool *(Class::*Member)() const;");
verifyFormat("void f() {\n"
" (a->*f)();\n"
" a->*x;\n"
" (a.*f)();\n"
" ((*a).*f)();\n"
" a.*x;\n"
"}");
verifyFormat("void f() {\n"
" (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
" aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n"
"}");
verifyFormat(
"(aaaaaaaaaa->*bbbbbbb)(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
FormatStyle Style = getLLVMStyle();
Style.PointerAlignment = FormatStyle::PAS_Left;
verifyFormat("typedef bool* (Class::*Member)() const;", Style);
}
TEST_F(FormatTest, UnderstandsUnaryOperators) {
verifyFormat("int a = -2;");
verifyFormat("f(-1, -2, -3);");
verifyFormat("a[-1] = 5;");
verifyFormat("int a = 5 + -2;");
verifyFormat("if (i == -1) {\n}");
verifyFormat("if (i != -1) {\n}");
verifyFormat("if (i > -1) {\n}");
verifyFormat("if (i < -1) {\n}");
verifyFormat("++(a->f());");
verifyFormat("--(a->f());");
verifyFormat("(a->f())++;");
verifyFormat("a[42]++;");
verifyFormat("if (!(a->f())) {\n}");
verifyFormat("a-- > b;");
verifyFormat("b ? -a : c;");
verifyFormat("n * sizeof char16;");
verifyFormat("n * alignof char16;", getGoogleStyle());
verifyFormat("sizeof(char);");
verifyFormat("alignof(char);", getGoogleStyle());
verifyFormat("return -1;");
verifyFormat("switch (a) {\n"
"case -1:\n"
" break;\n"
"}");
verifyFormat("#define X -1");
verifyFormat("#define X -kConstant");
verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};");
verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};");
verifyFormat("int a = /* confusing comment */ -1;");
// FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
verifyFormat("int a = i /* confusing comment */++;");
}
TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) {
verifyFormat("if (!aaaaaaaaaa( // break\n"
" aaaaa)) {\n"
"}");
verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n"
" aaaaa));");
verifyFormat("*aaa = aaaaaaa( // break\n"
" bbbbbb);");
}
TEST_F(FormatTest, UnderstandsOverloadedOperators) {
verifyFormat("bool operator<();");
verifyFormat("bool operator>();");
verifyFormat("bool operator=();");
verifyFormat("bool operator==();");
verifyFormat("bool operator!=();");
verifyFormat("int operator+();");
verifyFormat("int operator++();");
verifyFormat("bool operator();");
verifyFormat("bool operator()();");
verifyFormat("bool operator[]();");
verifyFormat("operator bool();");
verifyFormat("operator int();");
verifyFormat("operator void *();");
verifyFormat("operator SomeType<int>();");
verifyFormat("operator SomeType<int, int>();");
verifyFormat("operator SomeType<SomeType<int>>();");
verifyFormat("void *operator new(std::size_t size);");
verifyFormat("void *operator new[](std::size_t size);");
verifyFormat("void operator delete(void *ptr);");
verifyFormat("void operator delete[](void *ptr);");
verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n"
"AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);");
verifyFormat(
"ostream &operator<<(ostream &OutputStream,\n"
" SomeReallyLongType WithSomeReallyLongValue);");
verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n"
" const aaaaaaaaaaaaaaaaaaaaa &right) {\n"
" return left.group < right.group;\n"
"}");
verifyFormat("SomeType &operator=(const SomeType &S);");
verifyFormat("f.template operator()<int>();");
verifyGoogleFormat("operator void*();");
verifyGoogleFormat("operator SomeType<SomeType<int>>();");
verifyGoogleFormat("operator ::A();");
verifyFormat("using A::operator+;");
verifyFormat("string // break\n"
"operator()() & {}");
verifyFormat("string // break\n"
"operator()() && {}");
}
TEST_F(FormatTest, UnderstandsFunctionRefQualification) {
verifyFormat("Deleted &operator=(const Deleted &)& = default;");
verifyFormat("Deleted &operator=(const Deleted &)&& = delete;");
verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;");
verifyFormat("SomeType MemberFunction(const Deleted &)&& = delete;");
verifyFormat("Deleted &operator=(const Deleted &)&;");
verifyFormat("Deleted &operator=(const Deleted &)&&;");
verifyFormat("SomeType MemberFunction(const Deleted &)&;");
verifyFormat("SomeType MemberFunction(const Deleted &)&&;");
verifyGoogleFormat("Deleted& operator=(const Deleted&)& = default;");
verifyGoogleFormat("SomeType MemberFunction(const Deleted&)& = delete;");
verifyGoogleFormat("Deleted& operator=(const Deleted&)&;");
verifyGoogleFormat("SomeType MemberFunction(const Deleted&)&;");
FormatStyle Spaces = getLLVMStyle();
Spaces.SpacesInCStyleCastParentheses = true;
verifyFormat("Deleted &operator=(const Deleted &)& = default;", Spaces);
verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;", Spaces);
verifyFormat("Deleted &operator=(const Deleted &)&;", Spaces);
verifyFormat("SomeType MemberFunction(const Deleted &)&;", Spaces);
Spaces.SpacesInCStyleCastParentheses = false;
Spaces.SpacesInParentheses = true;
verifyFormat("Deleted &operator=( const Deleted & )& = default;", Spaces);
verifyFormat("SomeType MemberFunction( const Deleted & )& = delete;", Spaces);
verifyFormat("Deleted &operator=( const Deleted & )&;", Spaces);
verifyFormat("SomeType MemberFunction( const Deleted & )&;", Spaces);
}
TEST_F(FormatTest, UnderstandsNewAndDelete) {
verifyFormat("void f() {\n"
" A *a = new A;\n"
" A *a = new (placement) A;\n"
" delete a;\n"
" delete (A *)a;\n"
"}");
verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
" typename aaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
" typename aaaaaaaaaaaaaaaaaaaaaaaa();");
verifyFormat("delete[] h->p;");
}
TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
verifyFormat("int *f(int *a) {}");
verifyFormat("int main(int argc, char **argv) {}");
verifyFormat("Test::Test(int b) : a(b * b) {}");
verifyIndependentOfContext("f(a, *a);");
verifyFormat("void g() { f(*a); }");
verifyIndependentOfContext("int a = b * 10;");
verifyIndependentOfContext("int a = 10 * b;");
verifyIndependentOfContext("int a = b * c;");
verifyIndependentOfContext("int a += b * c;");
verifyIndependentOfContext("int a -= b * c;");
verifyIndependentOfContext("int a *= b * c;");
verifyIndependentOfContext("int a /= b * c;");
verifyIndependentOfContext("int a = *b;");
verifyIndependentOfContext("int a = *b * c;");
verifyIndependentOfContext("int a = b * *c;");
verifyIndependentOfContext("return 10 * b;");
verifyIndependentOfContext("return *b * *c;");
verifyIndependentOfContext("return a & ~b;");
verifyIndependentOfContext("f(b ? *c : *d);");
verifyIndependentOfContext("int a = b ? *c : *d;");
verifyIndependentOfContext("*b = a;");
verifyIndependentOfContext("a * ~b;");
verifyIndependentOfContext("a * !b;");
verifyIndependentOfContext("a * +b;");
verifyIndependentOfContext("a * -b;");
verifyIndependentOfContext("a * ++b;");
verifyIndependentOfContext("a * --b;");
verifyIndependentOfContext("a[4] * b;");
verifyIndependentOfContext("a[a * a] = 1;");
verifyIndependentOfContext("f() * b;");
verifyIndependentOfContext("a * [self dostuff];");
verifyIndependentOfContext("int x = a * (a + b);");
verifyIndependentOfContext("(a *)(a + b);");
verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;");
verifyIndependentOfContext("int *pa = (int *)&a;");
verifyIndependentOfContext("return sizeof(int **);");
verifyIndependentOfContext("return sizeof(int ******);");
verifyIndependentOfContext("return (int **&)a;");
verifyIndependentOfContext("f((*PointerToArray)[10]);");
verifyFormat("void f(Type (*parameter)[10]) {}");
verifyGoogleFormat("return sizeof(int**);");
verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
verifyFormat("auto a = [](int **&, int ***) {};");
verifyFormat("auto PointerBinding = [](const char *S) {};");
verifyFormat("typedef typeof(int(int, int)) *MyFunc;");
verifyFormat("[](const decltype(*a) &value) {}");
verifyIndependentOfContext("typedef void (*f)(int *a);");
verifyIndependentOfContext("int i{a * b};");
verifyIndependentOfContext("aaa && aaa->f();");
verifyIndependentOfContext("int x = ~*p;");
verifyFormat("Constructor() : a(a), area(width * height) {}");
verifyFormat("Constructor() : a(a), area(a, width * height) {}");
verifyFormat("void f() { f(a, c * d); }");
verifyIndependentOfContext("InvalidRegions[*R] = 0;");
verifyIndependentOfContext("A<int *> a;");
verifyIndependentOfContext("A<int **> a;");
verifyIndependentOfContext("A<int *, int *> a;");
verifyIndependentOfContext("A<int *[]> a;");
verifyIndependentOfContext(
"const char *const p = reinterpret_cast<const char *const>(q);");
verifyIndependentOfContext("A<int **, int **> a;");
verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
verifyFormat("for (char **a = b; *a; ++a) {\n}");
verifyFormat("for (; a && b;) {\n}");
verifyFormat("bool foo = true && [] { return false; }();");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
verifyGoogleFormat("**outparam = 1;");
verifyGoogleFormat("*outparam = a * b;");
verifyGoogleFormat("int main(int argc, char** argv) {}");
verifyGoogleFormat("A<int*> a;");
verifyGoogleFormat("A<int**> a;");
verifyGoogleFormat("A<int*, int*> a;");
verifyGoogleFormat("A<int**, int**> a;");
verifyGoogleFormat("f(b ? *c : *d);");
verifyGoogleFormat("int a = b ? *c : *d;");
verifyGoogleFormat("Type* t = **x;");
verifyGoogleFormat("Type* t = *++*x;");
verifyGoogleFormat("*++*x;");
verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
verifyGoogleFormat("Type* t = x++ * y;");
verifyGoogleFormat(
"const char* const p = reinterpret_cast<const char* const>(q);");
verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);");
verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);");
verifyGoogleFormat("template <typename T>\n"
"void f(int i = 0, SomeType** temps = NULL);");
FormatStyle Left = getLLVMStyle();
Left.PointerAlignment = FormatStyle::PAS_Left;
verifyFormat("x = *a(x) = *a(y);", Left);
verifyIndependentOfContext("a = *(x + y);");
verifyIndependentOfContext("a = &(x + y);");
verifyIndependentOfContext("*(x + y).call();");
verifyIndependentOfContext("&(x + y)->call();");
verifyFormat("void f() { &(*I).first; }");
verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
verifyFormat(
"int *MyValues = {\n"
" *A, // Operator detection might be confused by the '{'\n"
" *BB // Operator detection might be confused by previous comment\n"
"};");
verifyIndependentOfContext("if (int *a = &b)");
verifyIndependentOfContext("if (int &a = *b)");
verifyIndependentOfContext("if (a & b[i])");
verifyIndependentOfContext("if (a::b::c::d & b[i])");
verifyIndependentOfContext("if (*b[i])");
verifyIndependentOfContext("if (int *a = (&b))");
verifyIndependentOfContext("while (int *a = &b)");
verifyIndependentOfContext("size = sizeof *a;");
verifyIndependentOfContext("if (a && (b = c))");
verifyFormat("void f() {\n"
" for (const int &v : Values) {\n"
" }\n"
"}");
verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}");
verifyFormat("#define A (!a * b)");
verifyFormat("#define MACRO \\\n"
" int *i = a * b; \\\n"
" void f(a *b);",
getLLVMStyleWithColumns(19));
verifyIndependentOfContext("A = new SomeType *[Length];");
verifyIndependentOfContext("A = new SomeType *[Length]();");
verifyIndependentOfContext("T **t = new T *;");
verifyIndependentOfContext("T **t = new T *();");
verifyGoogleFormat("A = new SomeType* [Length]();");
verifyGoogleFormat("A = new SomeType* [Length];");
verifyGoogleFormat("T** t = new T*;");
verifyGoogleFormat("T** t = new T*();");
FormatStyle PointerLeft = getLLVMStyle();
PointerLeft.PointerAlignment = FormatStyle::PAS_Left;
verifyFormat("delete *x;", PointerLeft);
verifyFormat("STATIC_ASSERT((a & b) == 0);");
verifyFormat("STATIC_ASSERT(0 == (a & b));");
verifyFormat("template <bool a, bool b> "
"typename t::if<x && y>::type f() {}");
verifyFormat("template <int *y> f() {}");
verifyFormat("vector<int *> v;");
verifyFormat("vector<int *const> v;");
verifyFormat("vector<int *const **const *> v;");
verifyFormat("vector<int *volatile> v;");
verifyFormat("vector<a * b> v;");
verifyFormat("foo<b && false>();");
verifyFormat("foo<b & 1>();");
verifyFormat("decltype(*::std::declval<const T &>()) void F();");
verifyFormat(
"template <class T, class = typename std::enable_if<\n"
" std::is_integral<T>::value &&\n"
" (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n"
"void F();",
getLLVMStyleWithColumns(76));
verifyFormat(
"template <class T,\n"
" class = typename ::std::enable_if<\n"
" ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n"
"void F();",
getGoogleStyleWithColumns(68));
verifyIndependentOfContext("MACRO(int *i);");
verifyIndependentOfContext("MACRO(auto *a);");
verifyIndependentOfContext("MACRO(const A *a);");
verifyIndependentOfContext("MACRO('0' <= c && c <= '9');");
// FIXME: Is there a way to make this work?
// verifyIndependentOfContext("MACRO(A *a);");
verifyFormat("DatumHandle const *operator->() const { return input_; }");
EXPECT_EQ("#define OP(x) \\\n"
" ostream &operator<<(ostream &s, const A &a) { \\\n"
" return s << a.DebugString(); \\\n"
" }",
format("#define OP(x) \\\n"
" ostream &operator<<(ostream &s, const A &a) { \\\n"
" return s << a.DebugString(); \\\n"
" }",
getLLVMStyleWithColumns(50)));
// FIXME: We cannot handle this case yet; we might be able to figure out that
// foo<x> d > v; doesn't make sense.
verifyFormat("foo<a<b && c> d> v;");
FormatStyle PointerMiddle = getLLVMStyle();
PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
verifyFormat("delete *x;", PointerMiddle);
verifyFormat("int * x;", PointerMiddle);
verifyFormat("template <int * y> f() {}", PointerMiddle);
verifyFormat("int * f(int * a) {}", PointerMiddle);
verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle);
verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle);
verifyFormat("A<int *> a;", PointerMiddle);
verifyFormat("A<int **> a;", PointerMiddle);
verifyFormat("A<int *, int *> a;", PointerMiddle);
verifyFormat("A<int * []> a;", PointerMiddle);
verifyFormat("A = new SomeType * [Length]();", PointerMiddle);
verifyFormat("A = new SomeType * [Length];", PointerMiddle);
verifyFormat("T ** t = new T *;", PointerMiddle);
}
TEST_F(FormatTest, UnderstandsAttributes) {
verifyFormat("SomeType s __attribute__((unused)) (InitValue);");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n"
"aaaaaaaaaaaaaaaaaaaaaaa(int i);");
}
TEST_F(FormatTest, UnderstandsEllipsis) {
verifyFormat("int printf(const char *fmt, ...);");
verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
verifyFormat("template <class... Ts> void Foo(Ts *... ts) {}");
FormatStyle PointersLeft = getLLVMStyle();
PointersLeft.PointerAlignment = FormatStyle::PAS_Left;
verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", PointersLeft);
}
TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
EXPECT_EQ("int *a;\n"
"int *a;\n"
"int *a;",
format("int *a;\n"
"int* a;\n"
"int *a;",
getGoogleStyle()));
EXPECT_EQ("int* a;\n"
"int* a;\n"
"int* a;",
format("int* a;\n"
"int* a;\n"
"int *a;",
getGoogleStyle()));
EXPECT_EQ("int *a;\n"
"int *a;\n"
"int *a;",
format("int *a;\n"
"int * a;\n"
"int * a;",
getGoogleStyle()));
}
TEST_F(FormatTest, UnderstandsRvalueReferences) {
verifyFormat("int f(int &&a) {}");
verifyFormat("int f(int a, char &&b) {}");
verifyFormat("void f() { int &&a = b; }");
verifyGoogleFormat("int f(int a, char&& b) {}");
verifyGoogleFormat("void f() { int&& a = b; }");
verifyIndependentOfContext("A<int &&> a;");
verifyIndependentOfContext("A<int &&, int &&> a;");
verifyGoogleFormat("A<int&&> a;");
verifyGoogleFormat("A<int&&, int&&> a;");
// Not rvalue references:
verifyFormat("template <bool B, bool C> class A {\n"
" static_assert(B && C, \"Something is wrong\");\n"
"};");
verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))");
verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))");
verifyFormat("#define A(a, b) (a && b)");
}
TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
verifyFormat("void f() {\n"
" x[aaaaaaaaa -\n"
" b] = 23;\n"
"}",
getLLVMStyleWithColumns(15));
}
TEST_F(FormatTest, FormatsCasts) {
verifyFormat("Type *A = static_cast<Type *>(P);");
verifyFormat("Type *A = (Type *)P;");
verifyFormat("Type *A = (vector<Type *, int *>)P;");
verifyFormat("int a = (int)(2.0f);");
verifyFormat("int a = (int)2.0f;");
verifyFormat("x[(int32)y];");
verifyFormat("x = (int32)y;");
verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)");
verifyFormat("int a = (int)*b;");
verifyFormat("int a = (int)2.0f;");
verifyFormat("int a = (int)~0;");
verifyFormat("int a = (int)++a;");
verifyFormat("int a = (int)sizeof(int);");
verifyFormat("int a = (int)+2;");
verifyFormat("my_int a = (my_int)2.0f;");
verifyFormat("my_int a = (my_int)sizeof(int);");
verifyFormat("return (my_int)aaa;");
verifyFormat("#define x ((int)-1)");
verifyFormat("#define LENGTH(x, y) (x) - (y) + 1");
verifyFormat("#define p(q) ((int *)&q)");
verifyFormat("fn(a)(b) + 1;");
verifyFormat("void f() { my_int a = (my_int)*b; }");
verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }");
verifyFormat("my_int a = (my_int)~0;");
verifyFormat("my_int a = (my_int)++a;");
verifyFormat("my_int a = (my_int)-2;");
verifyFormat("my_int a = (my_int)1;");
verifyFormat("my_int a = (my_int *)1;");
verifyFormat("my_int a = (const my_int)-1;");
verifyFormat("my_int a = (const my_int *)-1;");
verifyFormat("my_int a = (my_int)(my_int)-1;");
// FIXME: single value wrapped with paren will be treated as cast.
verifyFormat("void f(int i = (kValue)*kMask) {}");
verifyFormat("{ (void)F; }");
// Don't break after a cast's
verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
" (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n"
" bbbbbbbbbbbbbbbbbbbbbb);");
// These are not casts.
verifyFormat("void f(int *) {}");
verifyFormat("f(foo)->b;");
verifyFormat("f(foo).b;");
verifyFormat("f(foo)(b);");
verifyFormat("f(foo)[b];");
verifyFormat("[](foo) { return 4; }(bar);");
verifyFormat("(*funptr)(foo)[4];");
verifyFormat("funptrs[4](foo)[4];");
verifyFormat("void f(int *);");
verifyFormat("void f(int *) = 0;");
verifyFormat("void f(SmallVector<int>) {}");
verifyFormat("void f(SmallVector<int>);");
verifyFormat("void f(SmallVector<int>) = 0;");
verifyFormat("void f(int i = (kA * kB) & kMask) {}");
verifyFormat("int a = sizeof(int) * b;");
verifyFormat("int a = alignof(int) * b;", getGoogleStyle());
verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;");
verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");");
verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;");
// These are not casts, but at some point were confused with casts.
verifyFormat("virtual void foo(int *) override;");
verifyFormat("virtual void foo(char &) const;");
verifyFormat("virtual void foo(int *a, char *) const;");
verifyFormat("int a = sizeof(int *) + b;");
verifyFormat("int a = alignof(int *) + b;", getGoogleStyle());
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
// FIXME: The indentation here is not ideal.
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n"
" [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];");
}
TEST_F(FormatTest, FormatsFunctionTypes) {
verifyFormat("A<bool()> a;");
verifyFormat("A<SomeType()> a;");
verifyFormat("A<void (*)(int, std::string)> a;");
verifyFormat("A<void *(int)>;");
verifyFormat("void *(*a)(int *, SomeType *);");
verifyFormat("int (*func)(void *);");
verifyFormat("void f() { int (*func)(void *); }");
verifyFormat("template <class CallbackClass>\n"
"using MyCallback = void (CallbackClass::*)(SomeObject *Data);");
verifyGoogleFormat("A<void*(int*, SomeType*)>;");
verifyGoogleFormat("void* (*a)(int);");
verifyGoogleFormat(
"template <class CallbackClass>\n"
"using MyCallback = void (CallbackClass::*)(SomeObject* Data);");
// Other constructs can look somewhat like function types:
verifyFormat("A<sizeof(*x)> a;");
verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)");
verifyFormat("some_var = function(*some_pointer_var)[0];");
verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }");
}
TEST_F(FormatTest, FormatsPointersToArrayTypes) {
verifyFormat("A (*foo_)[6];");
verifyFormat("vector<int> (*foo_)[6];");
}
TEST_F(FormatTest, BreaksLongVariableDeclarations) {
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
" LoooooooooooooooooooooooooooooooooooooooongVariable;");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n"
" LoooooooooooooooooooooooooooooooooooooooongVariable;");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
" *LoooooooooooooooooooooooooooooooooooooooongVariable;");
// Different ways of ()-initializiation.
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
" LoooooooooooooooooooooooooooooooooooooooongVariable(1);");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
" LoooooooooooooooooooooooooooooooooooooooongVariable(a);");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
" LoooooooooooooooooooooooooooooooooooooooongVariable({});");
}
TEST_F(FormatTest, BreaksLongDeclarations) {
verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n"
" AnotherNameForTheLongType;");
verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
"LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType *\n"
"LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
"LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n"
"LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
"LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
"LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
FormatStyle Indented = getLLVMStyle();
Indented.IndentWrappedFunctionNames = true;
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
" LoooooooooooooooooooooooooooooooongFunctionDeclaration();",
Indented);
verifyFormat(
"LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
" LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
Indented);
verifyFormat(
"LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
" LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
Indented);
verifyFormat(
"decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
" LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
Indented);
// FIXME: Without the comment, this breaks after "(".
verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n"
" (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();",
getGoogleStyle());
verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
" int LoooooooooooooooooooongParam2) {}");
verifyFormat(
"TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n"
" SourceLocation L, IdentifierIn *II,\n"
" Type *T) {}");
verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
"ReallyReaaallyLongFunctionName(\n"
" const std::string &SomeParameter,\n"
" const SomeType<string, SomeOtherTemplateParameter>\n"
" &ReallyReallyLongParameterName,\n"
" const SomeType<string, SomeOtherTemplateParameter>\n"
" &AnotherLongParameterName) {}");
verifyFormat("template <typename A>\n"
"SomeLoooooooooooooooooooooongType<\n"
" typename some_namespace::SomeOtherType<A>::Type>\n"
"Function() {}");
verifyGoogleFormat(
"aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
" aaaaaaaaaaaaaaaaaaaaaaa;");
verifyGoogleFormat(
"TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
" SourceLocation L) {}");
verifyGoogleFormat(
"some_namespace::LongReturnType\n"
"long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
" int first_long_parameter, int second_parameter) {}");
verifyGoogleFormat("template <typename T>\n"
"aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
"aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" int aaaaaaaaaaaaaaaaaaaaaaa);");
verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
" const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" *aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
}
TEST_F(FormatTest, FormatsArrays) {
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
" [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
" [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
" [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
verifyFormat(
"llvm::outs() << \"aaaaaaaaaaaa: \"\n"
" << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
" [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];");
verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];");
verifyFormat(
"aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n"
" .aaaaaaa[0]\n"
" .aaaaaaaaaaaaaaaaaaaaaa();");
verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10));
}
TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
verifyFormat("(a)->b();");
verifyFormat("--a;");
}
TEST_F(FormatTest, HandlesIncludeDirectives) {
verifyFormat("#include <string>\n"
"#include <a/b/c.h>\n"
"#include \"a/b/string\"\n"
"#include \"string.h\"\n"
"#include \"string.h\"\n"
"#include <a-a>\n"
"#include < path with space >\n"
"#include \"abc.h\" // this is included for ABC\n"
"#include \"some long include\" // with a comment\n"
"#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"",
getLLVMStyleWithColumns(35));
EXPECT_EQ("#include \"a.h\"", format("#include \"a.h\""));
EXPECT_EQ("#include <a>", format("#include<a>"));
verifyFormat("#import <string>");
verifyFormat("#import <a/b/c.h>");
verifyFormat("#import \"a/b/string\"");
verifyFormat("#import \"string.h\"");
verifyFormat("#import \"string.h\"");
verifyFormat("#if __has_include(<strstream>)\n"
"#include <strstream>\n"
"#endif");
verifyFormat("#define MY_IMPORT <a/b>");
// Protocol buffer definition or missing "#".
verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";",
getLLVMStyleWithColumns(30));
FormatStyle Style = getLLVMStyle();
Style.AlwaysBreakBeforeMultilineStrings = true;
Style.ColumnLimit = 0;
verifyFormat("#import \"abc.h\"", Style);
// But 'import' might also be a regular C++ namespace.
verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
}
//===----------------------------------------------------------------------===//
// Error recovery tests.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, IncompleteParameterLists) {
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
" double *min_x,\n"
" double *max_x,\n"
" double *min_y,\n"
" double *max_y,\n"
" double *min_z,\n"
" double *max_z, ) {}",
NoBinPacking);
}
TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
verifyFormat("void f() { return; }\n42");
verifyFormat("void f() {\n"
" if (0)\n"
" return;\n"
"}\n"
"42");
verifyFormat("void f() { return }\n42");
verifyFormat("void f() {\n"
" if (0)\n"
" return\n"
"}\n"
"42");
}
TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
EXPECT_EQ("void f() { return }", format("void f ( ) { return }"));
EXPECT_EQ("void f() {\n"
" if (a)\n"
" return\n"
"}",
format("void f ( ) { if ( a ) return }"));
EXPECT_EQ("namespace N {\n"
"void f()\n"
"}",
format("namespace N { void f() }"));
EXPECT_EQ("namespace N {\n"
"void f() {}\n"
"void g()\n"
"}",
format("namespace N { void f( ) { } void g( ) }"));
}
TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
verifyFormat("int aaaaaaaa =\n"
" // Overlylongcomment\n"
" b;",
getLLVMStyleWithColumns(20));
verifyFormat("function(\n"
" ShortArgument,\n"
" LoooooooooooongArgument);\n",
getLLVMStyleWithColumns(20));
}
TEST_F(FormatTest, IncorrectAccessSpecifier) {
verifyFormat("public:");
verifyFormat("class A {\n"
"public\n"
" void f() {}\n"
"};");
verifyFormat("public\n"
"int qwerty;");
verifyFormat("public\n"
"B {}");
verifyFormat("public\n"
"{}");
verifyFormat("public\n"
"B { int x; }");
}
TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
verifyFormat("{");
verifyFormat("#})");
verifyNoCrash("(/**/[:!] ?[).");
}
TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
verifyFormat("do {\n}");
verifyFormat("do {\n}\n"
"f();");
verifyFormat("do {\n}\n"
"wheeee(fun);");
verifyFormat("do {\n"
" f();\n"
"}");
}
TEST_F(FormatTest, IncorrectCodeMissingParens) {
verifyFormat("if {\n foo;\n foo();\n}");
verifyFormat("switch {\n foo;\n foo();\n}");
verifyFormat("for {\n foo;\n foo();\n}");
verifyFormat("while {\n foo;\n foo();\n}");
verifyFormat("do {\n foo;\n foo();\n} while;");
}
TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
verifyFormat("namespace {\n"
"class Foo { Foo (\n"
"};\n"
"} // comment");
}
TEST_F(FormatTest, IncorrectCodeErrorDetection) {
EXPECT_EQ("{\n {}\n", format("{\n{\n}\n"));
EXPECT_EQ("{\n {}\n", format("{\n {\n}\n"));
EXPECT_EQ("{\n {}\n", format("{\n {\n }\n"));
EXPECT_EQ("{\n {}\n}\n}\n", format("{\n {\n }\n }\n}\n"));
EXPECT_EQ("{\n"
" {\n"
" breakme(\n"
" qwe);\n"
" }\n",
format("{\n"
" {\n"
" breakme(qwe);\n"
"}\n",
getLLVMStyleWithColumns(10)));
}
TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
verifyFormat("int x = {\n"
" avariable,\n"
" b(alongervariable)};",
getLLVMStyleWithColumns(25));
}
TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
verifyFormat("return (a)(b){1, 2, 3};");
}
TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
verifyFormat("vector<int> x{1, 2, 3, 4};");
verifyFormat("vector<int> x{\n"
" 1, 2, 3, 4,\n"
"};");
verifyFormat("vector<T> x{{}, {}, {}, {}};");
verifyFormat("f({1, 2});");
verifyFormat("auto v = Foo{-1};");
verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});");
verifyFormat("Class::Class : member{1, 2, 3} {}");
verifyFormat("new vector<int>{1, 2, 3};");
verifyFormat("new int[3]{1, 2, 3};");
verifyFormat("new int{1};");
verifyFormat("return {arg1, arg2};");
verifyFormat("return {arg1, SomeType{parameter}};");
verifyFormat("int count = set<int>{f(), g(), h()}.size();");
verifyFormat("new T{arg1, arg2};");
verifyFormat("f(MyMap[{composite, key}]);");
verifyFormat("class Class {\n"
" T member = {arg1, arg2};\n"
"};");
verifyFormat("vector<int> foo = {::SomeGlobalFunction()};");
verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");");
verifyFormat("int a = std::is_integral<int>{} + 0;");
verifyFormat("int foo(int i) { return fo1{}(i); }");
verifyFormat("int foo(int i) { return fo1{}(i); }");
verifyFormat("auto i = decltype(x){};");
verifyFormat("std::vector<int> v = {1, 0 /* comment */};");
verifyFormat("Node n{1, Node{1000}, //\n"
" 2};");
verifyFormat("Aaaa aaaaaaa{\n"
" {\n"
" aaaa,\n"
" },\n"
"};");
// In combination with BinPackParameters = false.
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n"
" bbbbb,\n"
" ccccc,\n"
" ddddd,\n"
" eeeee,\n"
" ffffff,\n"
" ggggg,\n"
" hhhhhh,\n"
" iiiiii,\n"
" jjjjjj,\n"
" kkkkkk};",
NoBinPacking);
verifyFormat("const Aaaaaa aaaaa = {\n"
" aaaaa,\n"
" bbbbb,\n"
" ccccc,\n"
" ddddd,\n"
" eeeee,\n"
" ffffff,\n"
" ggggg,\n"
" hhhhhh,\n"
" iiiiii,\n"
" jjjjjj,\n"
" kkkkkk,\n"
"};",
NoBinPacking);
verifyFormat(
"const Aaaaaa aaaaa = {\n"
" aaaaa, bbbbb, ccccc, ddddd, eeeee, ffffff, ggggg, hhhhhh,\n"
" iiiiii, jjjjjj, kkkkkk, aaaaa, bbbbb, ccccc, ddddd, eeeee,\n"
" ffffff, ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk,\n"
"};",
NoBinPacking);
// FIXME: The alignment of these trailing comments might be bad. Then again,
// this might be utterly useless in real code.
verifyFormat("Constructor::Constructor()\n"
" : some_value{ //\n"
" aaaaaaa, //\n"
" bbbbbbb} {}");
// In braced lists, the first comment is always assumed to belong to the
// first element. Thus, it can be moved to the next or previous line as
// appropriate.
EXPECT_EQ("function({// First element:\n"
" 1,\n"
" // Second element:\n"
" 2});",
format("function({\n"
" // First element:\n"
" 1,\n"
" // Second element:\n"
" 2});"));
EXPECT_EQ("std::vector<int> MyNumbers{\n"
" // First element:\n"
" 1,\n"
" // Second element:\n"
" 2};",
format("std::vector<int> MyNumbers{// First element:\n"
" 1,\n"
" // Second element:\n"
" 2};",
getLLVMStyleWithColumns(30)));
// A trailing comma should still lead to an enforced line break.
EXPECT_EQ("vector<int> SomeVector = {\n"
" // aaa\n"
" 1, 2,\n"
"};",
format("vector<int> SomeVector = { // aaa\n"
" 1, 2, };"));
FormatStyle ExtraSpaces = getLLVMStyle();
ExtraSpaces.Cpp11BracedListStyle = false;
ExtraSpaces.ColumnLimit = 75;
verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces);
verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces);
verifyFormat("f({ 1, 2 });", ExtraSpaces);
verifyFormat("auto v = Foo{ 1 };", ExtraSpaces);
verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces);
verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces);
verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces);
verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces);
verifyFormat("return { arg1, arg2 };", ExtraSpaces);
verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces);
verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces);
verifyFormat("new T{ arg1, arg2 };", ExtraSpaces);
verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces);
verifyFormat("class Class {\n"
" T member = { arg1, arg2 };\n"
"};",
ExtraSpaces);
verifyFormat(
"foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaa, aaaaa }\n"
" : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
" bbbbbbbbbbbbbbbbbbbb, bbbbb };",
ExtraSpaces);
verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces);
verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });",
ExtraSpaces);
verifyFormat(
"someFunction(OtherParam,\n"
" BracedList{ // comment 1 (Forcing interesting break)\n"
" param1, param2,\n"
" // comment 2\n"
" param3, param4 });",
ExtraSpaces);
verifyFormat(
"std::this_thread::sleep_for(\n"
" std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);",
ExtraSpaces);
verifyFormat(
"std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n"
" aaaaaaa, aaaaaaaaaa, aaaaa, aaaaaaaaaaaaaaa, aaa, aaaaaaaaaa, a,\n"
" aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa, aaaaaaa, a};");
verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces);
}
TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777};");
verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" // line comment\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555,\n"
" // line comment\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777};");
verifyFormat(
"vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
" 1, 22, 333, 4444, 55555, 666666, // comment\n"
" 7777777, 1, 22, 333, 4444, 55555, 666666,\n"
" 7777777, 1, 22, 333, 4444, 55555, 666666,\n"
" 7777777, 1, 22, 333, 4444, 55555, 666666,\n"
" 7777777};");
verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
" X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
" X86::R8, X86::R9, X86::R10, X86::R11, 0};");
verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
" 1, 1, 1, 1};",
getLLVMStyleWithColumns(39));
verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
" 1, 1, 1, 1};",
getLLVMStyleWithColumns(38));
verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n"
" 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};",
getLLVMStyleWithColumns(43));
// Trailing commas.
verifyFormat("vector<int> x = {\n"
" 1, 1, 1, 1, 1, 1, 1, 1,\n"
"};",
getLLVMStyleWithColumns(39));
verifyFormat("vector<int> x = {\n"
" 1, 1, 1, 1, 1, 1, 1, 1, //\n"
"};",
getLLVMStyleWithColumns(39));
verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
" 1, 1, 1, 1,\n"
" /**/ /**/};",
getLLVMStyleWithColumns(39));
verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n"
" {aaaaaaaaaaaaaaaaaaa},\n"
" {aaaaaaaaaaaaaaaaaaaaa},\n"
" {aaaaaaaaaaaaaaaaa}};",
getLLVMStyleWithColumns(60));
// With nested lists, we should either format one item per line or all nested
// lists one one line.
// FIXME: For some nested lists, we can do better.
verifyFormat(
"SomeStruct my_struct_array = {\n"
" {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n"
" aaaaaaaaaaaaa, aaaaaaa, aaa},\n"
" {aaa, aaa},\n"
" {aaa, aaa},\n"
" {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n"
" {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};");
// No column layout should be used here.
verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n"
" bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};");
verifyNoCrash("a<,");
}
TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
FormatStyle DoNotMerge = getLLVMStyle();
DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
verifyFormat("void f() { return 42; }");
verifyFormat("void f() {\n"
" return 42;\n"
"}",
DoNotMerge);
verifyFormat("void f() {\n"
" // Comment\n"
"}");
verifyFormat("{\n"
"#error {\n"
" int a;\n"
"}");
verifyFormat("{\n"
" int a;\n"
"#error {\n"
"}");
verifyFormat("void f() {} // comment");
verifyFormat("void f() { int a; } // comment");
verifyFormat("void f() {\n"
"} // comment",
DoNotMerge);
verifyFormat("void f() {\n"
" int a;\n"
"} // comment",
DoNotMerge);
verifyFormat("void f() {\n"
"} // comment",
getLLVMStyleWithColumns(15));
verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
verifyFormat("void f() {\n return 42;\n}", getLLVMStyleWithColumns(22));
verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
verifyFormat("class C {\n"
" C()\n"
" : iiiiiiii(nullptr),\n"
" kkkkkkk(nullptr),\n"
" mmmmmmm(nullptr),\n"
" nnnnnnn(nullptr) {}\n"
"};",
getGoogleStyle());
FormatStyle NoColumnLimit = getLLVMStyle();
NoColumnLimit.ColumnLimit = 0;
EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit));
EXPECT_EQ("class C {\n"
" A() : b(0) {}\n"
"};", format("class C{A():b(0){}};", NoColumnLimit));
EXPECT_EQ("A()\n"
" : b(0) {\n"
"}",
format("A()\n:b(0)\n{\n}", NoColumnLimit));
FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit;
DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine =
FormatStyle::SFS_None;
EXPECT_EQ("A()\n"
" : b(0) {\n"
"}",
format("A():b(0){}", DoNotMergeNoColumnLimit));
EXPECT_EQ("A()\n"
" : b(0) {\n"
"}",
format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit));
verifyFormat("#define A \\\n"
" void f() { \\\n"
" int i; \\\n"
" }",
getLLVMStyleWithColumns(20));
verifyFormat("#define A \\\n"
" void f() { int i; }",
getLLVMStyleWithColumns(21));
verifyFormat("#define A \\\n"
" void f() { \\\n"
" int i; \\\n"
" } \\\n"
" int j;",
getLLVMStyleWithColumns(22));
verifyFormat("#define A \\\n"
" void f() { int i; } \\\n"
" int j;",
getLLVMStyleWithColumns(23));
}
TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) {
FormatStyle MergeInlineOnly = getLLVMStyle();
MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
verifyFormat("class C {\n"
" int f() { return 42; }\n"
"};",
MergeInlineOnly);
verifyFormat("int f() {\n"
" return 42;\n"
"}",
MergeInlineOnly);
}
TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
// Elaborate type variable declarations.
verifyFormat("struct foo a = {bar};\nint n;");
verifyFormat("class foo a = {bar};\nint n;");
verifyFormat("union foo a = {bar};\nint n;");
// Elaborate types inside function definitions.
verifyFormat("struct foo f() {}\nint n;");
verifyFormat("class foo f() {}\nint n;");
verifyFormat("union foo f() {}\nint n;");
// Templates.
verifyFormat("template <class X> void f() {}\nint n;");
verifyFormat("template <struct X> void f() {}\nint n;");
verifyFormat("template <union X> void f() {}\nint n;");
// Actual definitions...
verifyFormat("struct {\n} n;");
verifyFormat(
"template <template <class T, class Y>, class Z> class X {\n} n;");
verifyFormat("union Z {\n int n;\n} x;");
verifyFormat("class MACRO Z {\n} n;");
verifyFormat("class MACRO(X) Z {\n} n;");
verifyFormat("class __attribute__(X) Z {\n} n;");
verifyFormat("class __declspec(X) Z {\n} n;");
verifyFormat("class A##B##C {\n} n;");
verifyFormat("class alignas(16) Z {\n} n;");
// Redefinition from nested context:
verifyFormat("class A::B::C {\n} n;");
// Template definitions.
verifyFormat(
"template <typename F>\n"
"Matcher(const Matcher<F> &Other,\n"
" typename enable_if_c<is_base_of<F, T>::value &&\n"
" !is_same<F, T>::value>::type * = 0)\n"
" : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
// FIXME: This is still incorrectly handled at the formatter side.
verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};");
// FIXME:
// This now gets parsed incorrectly as class definition.
// verifyFormat("class A<int> f() {\n}\nint n;");
// Elaborate types where incorrectly parsing the structural element would
// break the indent.
verifyFormat("if (true)\n"
" class X x;\n"
"else\n"
" f();\n");
// This is simply incomplete. Formatting is not important, but must not crash.
verifyFormat("class A:");
}
TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
EXPECT_EQ("#error Leave all white!!!!! space* alone!\n",
format("#error Leave all white!!!!! space* alone!\n"));
EXPECT_EQ(
"#warning Leave all white!!!!! space* alone!\n",
format("#warning Leave all white!!!!! space* alone!\n"));
EXPECT_EQ("#error 1", format(" # error 1"));
EXPECT_EQ("#warning 1", format(" # warning 1"));
}
TEST_F(FormatTest, FormatHashIfExpressions) {
verifyFormat("#if AAAA && BBBB");
// FIXME: Come up with a better indentation for #elif.
verifyFormat(
"#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) && \\\n"
" defined(BBBBBBBB)\n"
"#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) && \\\n"
" defined(BBBBBBBB)\n"
"#endif",
getLLVMStyleWithColumns(65));
}
TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
FormatStyle AllowsMergedIf = getGoogleStyle();
AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
verifyFormat("if (true)\n#error E\n return 42;", AllowsMergedIf);
EXPECT_EQ("if (true) return 42;",
format("if (true)\nreturn 42;", AllowsMergedIf));
FormatStyle ShortMergedIf = AllowsMergedIf;
ShortMergedIf.ColumnLimit = 25;
verifyFormat("#define A \\\n"
" if (true) return 42;",
ShortMergedIf);
verifyFormat("#define A \\\n"
" f(); \\\n"
" if (true)\n"
"#define B",
ShortMergedIf);
verifyFormat("#define A \\\n"
" f(); \\\n"
" if (true)\n"
"g();",
ShortMergedIf);
verifyFormat("{\n"
"#ifdef A\n"
" // Comment\n"
" if (true) continue;\n"
"#endif\n"
" // Comment\n"
" if (true) continue;\n"
"}",
ShortMergedIf);
ShortMergedIf.ColumnLimit = 29;
verifyFormat("#define A \\\n"
" if (aaaaaaaaaa) return 1; \\\n"
" return 2;",
ShortMergedIf);
ShortMergedIf.ColumnLimit = 28;
verifyFormat("#define A \\\n"
" if (aaaaaaaaaa) \\\n"
" return 1; \\\n"
" return 2;",
ShortMergedIf);
}
TEST_F(FormatTest, BlockCommentsInControlLoops) {
verifyFormat("if (0) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("if (0) /* a comment in a strange place */ {\n"
" f();\n"
"} /* another comment */ else /* comment #3 */ {\n"
" g();\n"
"}");
verifyFormat("while (0) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("for (;;) /* a comment in a strange place */ {\n"
" f();\n"
"}");
verifyFormat("do /* a comment in a strange place */ {\n"
" f();\n"
"} /* another comment */ while (0);");
}
TEST_F(FormatTest, BlockComments) {
EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
format("/* *//* */ /* */\n/* *//* */ /* */"));
EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;"));
EXPECT_EQ("#define A /*123*/ \\\n"
" b\n"
"/* */\n"
"someCall(\n"
" parameter);",
format("#define A /*123*/ b\n"
"/* */\n"
"someCall(parameter);",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("#define A\n"
"/* */ someCall(\n"
" parameter);",
format("#define A\n"
"/* */someCall(parameter);",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/"));
EXPECT_EQ("/*\n"
"*\n"
" * aaaaaa\n"
"*aaaaaa\n"
"*/",
format("/*\n"
"*\n"
" * aaaaaa aaaaaa\n"
"*/",
getLLVMStyleWithColumns(10)));
EXPECT_EQ("/*\n"
"**\n"
"* aaaaaa\n"
"*aaaaaa\n"
"*/",
format("/*\n"
"**\n"
"* aaaaaa aaaaaa\n"
"*/",
getLLVMStyleWithColumns(10)));
FormatStyle NoBinPacking = getLLVMStyle();
NoBinPacking.BinPackParameters = false;
EXPECT_EQ("someFunction(1, /* comment 1 */\n"
" 2, /* comment 2 */\n"
" 3, /* comment 3 */\n"
" aaaa,\n"
" bbbb);",
format("someFunction (1, /* comment 1 */\n"
" 2, /* comment 2 */ \n"
" 3, /* comment 3 */\n"
"aaaa, bbbb );",
NoBinPacking));
verifyFormat(
"bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
EXPECT_EQ(
"bool aaaaaaaaaaaaa = /* trailing comment */\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
format(
"bool aaaaaaaaaaaaa = /* trailing comment */\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
EXPECT_EQ(
"int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
"int cccccccccccccccccccccccccccccc; /* comment */\n",
format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
"int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
"int cccccccccccccccccccccccccccccc; /* comment */\n"));
verifyFormat("void f(int * /* unused */) {}");
EXPECT_EQ("/*\n"
" **\n"
" */",
format("/*\n"
" **\n"
" */"));
EXPECT_EQ("/*\n"
" *q\n"
" */",
format("/*\n"
" *q\n"
" */"));
EXPECT_EQ("/*\n"
" * q\n"
" */",
format("/*\n"
" * q\n"
" */"));
EXPECT_EQ("/*\n"
" **/",
format("/*\n"
" **/"));
EXPECT_EQ("/*\n"
" ***/",
format("/*\n"
" ***/"));
}
TEST_F(FormatTest, BlockCommentsInMacros) {
EXPECT_EQ("#define A \\\n"
" { \\\n"
" /* one line */ \\\n"
" someCall();",
format("#define A { \\\n"
" /* one line */ \\\n"
" someCall();",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("#define A \\\n"
" { \\\n"
" /* previous */ \\\n"
" /* one line */ \\\n"
" someCall();",
format("#define A { \\\n"
" /* previous */ \\\n"
" /* one line */ \\\n"
" someCall();",
getLLVMStyleWithColumns(20)));
}
TEST_F(FormatTest, BlockCommentsAtEndOfLine) {
EXPECT_EQ("a = {\n"
" 1111 /* */\n"
"};",
format("a = {1111 /* */\n"
"};",
getLLVMStyleWithColumns(15)));
EXPECT_EQ("a = {\n"
" 1111 /* */\n"
"};",
format("a = {1111 /* */\n"
"};",
getLLVMStyleWithColumns(15)));
// FIXME: The formatting is still wrong here.
EXPECT_EQ("a = {\n"
" 1111 /* a\n"
" */\n"
"};",
format("a = {1111 /* a */\n"
"};",
getLLVMStyleWithColumns(15)));
}
TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) {
// FIXME: This is not what we want...
verifyFormat("{\n"
"// a"
"// b");
}
TEST_F(FormatTest, FormatStarDependingOnContext) {
verifyFormat("void f(int *a);");
verifyFormat("void f() { f(fint * b); }");
verifyFormat("class A {\n void f(int *a);\n};");
verifyFormat("class A {\n int *a;\n};");
verifyFormat("namespace a {\n"
"namespace b {\n"
"class A {\n"
" void f() {}\n"
" int *a;\n"
"};\n"
"}\n"
"}");
}
TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
verifyFormat("while");
verifyFormat("operator");
}
//===----------------------------------------------------------------------===//
// Objective-C tests.
//===----------------------------------------------------------------------===//
TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
format("-(NSUInteger)indexOfObject:(id)anObject;"));
EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
format("-(NSInteger)Method3:(id)anObject;"));
EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
format("-(NSInteger)Method4:(id)anObject;"));
EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
EXPECT_EQ(
"- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;",
format(
"- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;"));
// Very long objectiveC method declaration.
verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n"
" (SoooooooooooooooooooooomeType *)bbbbbbbbbb;");
verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
" inRange:(NSRange)range\n"
" outRange:(NSRange)out_range\n"
" outRange1:(NSRange)out_range1\n"
" outRange2:(NSRange)out_range2\n"
" outRange3:(NSRange)out_range3\n"
" outRange4:(NSRange)out_range4\n"
" outRange5:(NSRange)out_range5\n"
" outRange6:(NSRange)out_range6\n"
" outRange7:(NSRange)out_range7\n"
" outRange8:(NSRange)out_range8\n"
" outRange9:(NSRange)out_range9;");
verifyFormat("- (int)sum:(vector<int>)numbers;");
verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
// FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
// protocol lists (but not for template classes):
//verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
verifyFormat("- (int (*)())foo:(int (*)())f;");
verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
// If there's no return type (very rare in practice!), LLVM and Google style
// agree.
verifyFormat("- foo;");
verifyFormat("- foo:(int)f;");
verifyGoogleFormat("- foo:(int)foo;");
}
TEST_F(FormatTest, FormatObjCInterface) {
verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
"@public\n"
" int field1;\n"
"@protected\n"
" int field2;\n"
"@private\n"
" int field3;\n"
"@package\n"
" int field4;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n"
" @public\n"
" int field1;\n"
" @protected\n"
" int field2;\n"
" @private\n"
" int field3;\n"
" @package\n"
" int field4;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface /* wait for it */ Foo\n"
"+ (id)init;\n"
"// Look, a comment!\n"
"- (int)answerWith:(int)i;\n"
"@end");
verifyFormat("@interface Foo\n"
"@end\n"
"@interface Bar\n"
"@end");
verifyFormat("@interface Foo : Bar\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n"
"+ (id)init;\n"
"@end");
verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo (HackStuff)\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo ()\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n"
"+ (id)init;\n"
"@end");
verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo : Bar {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo : Bar <Baz, Quux> {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo (HackStuff) {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo () {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n"
" int _i;\n"
"}\n"
"+ (id)init;\n"
"@end");
FormatStyle OnePerLine = getGoogleStyle();
OnePerLine.BinPackParameters = false;
verifyFormat("@interface aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ()<\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n"
"}",
OnePerLine);
}
TEST_F(FormatTest, FormatObjCImplementation) {
verifyFormat("@implementation Foo : NSObject {\n"
"@public\n"
" int field1;\n"
"@protected\n"
" int field2;\n"
"@private\n"
" int field3;\n"
"@package\n"
" int field4;\n"
"}\n"
"+ (id)init {\n}\n"
"@end");
verifyGoogleFormat("@implementation Foo : NSObject {\n"
" @public\n"
" int field1;\n"
" @protected\n"
" int field2;\n"
" @private\n"
" int field3;\n"
" @package\n"
" int field4;\n"
"}\n"
"+ (id)init {\n}\n"
"@end");
verifyFormat("@implementation Foo\n"
"+ (id)init {\n"
" if (true)\n"
" return nil;\n"
"}\n"
"// Look, a comment!\n"
"- (int)answerWith:(int)i {\n"
" return i;\n"
"}\n"
"+ (int)answerWith:(int)i {\n"
" return i;\n"
"}\n"
"@end");
verifyFormat("@implementation Foo\n"
"@end\n"
"@implementation Bar\n"
"@end");
EXPECT_EQ("@implementation Foo : Bar\n"
"+ (id)init {\n}\n"
"- (void)foo {\n}\n"
"@end",
format("@implementation Foo : Bar\n"
"+(id)init{}\n"
"-(void)foo{}\n"
"@end"));
verifyFormat("@implementation Foo {\n"
" int _i;\n"
"}\n"
"+ (id)init {\n}\n"
"@end");
verifyFormat("@implementation Foo : Bar {\n"
" int _i;\n"
"}\n"
"+ (id)init {\n}\n"
"@end");
verifyFormat("@implementation Foo (HackStuff)\n"
"+ (id)init {\n}\n"
"@end");
verifyFormat("@implementation ObjcClass\n"
"- (void)method;\n"
"{}\n"
"@end");
}
TEST_F(FormatTest, FormatObjCProtocol) {
verifyFormat("@protocol Foo\n"
"@property(weak) id delegate;\n"
"- (NSUInteger)numberOfThings;\n"
"@end");
verifyFormat("@protocol MyProtocol <NSObject>\n"
"- (NSUInteger)numberOfThings;\n"
"@end");
verifyGoogleFormat("@protocol MyProtocol<NSObject>\n"
"- (NSUInteger)numberOfThings;\n"
"@end");
verifyFormat("@protocol Foo;\n"
"@protocol Bar;\n");
verifyFormat("@protocol Foo\n"
"@end\n"
"@protocol Bar\n"
"@end");
verifyFormat("@protocol myProtocol\n"
"- (void)mandatoryWithInt:(int)i;\n"
"@optional\n"
"- (void)optional;\n"
"@required\n"
"- (void)required;\n"
"@optional\n"
"@property(assign) int madProp;\n"
"@end\n");
verifyFormat("@property(nonatomic, assign, readonly)\n"
" int *looooooooooooooooooooooooooooongNumber;\n"
"@property(nonatomic, assign, readonly)\n"
" NSString *looooooooooooooooooooooooooooongName;");
verifyFormat("@implementation PR18406\n"
"}\n"
"@end");
}
TEST_F(FormatTest, FormatObjCMethodDeclarations) {
verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n"
" rect:(NSRect)theRect\n"
" interval:(float)theInterval {\n"
"}");
verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
" longKeyword:(NSRect)theRect\n"
" evenLongerKeyword:(float)theInterval\n"
" error:(NSError **)theError {\n"
"}");
verifyFormat("- (instancetype)initXxxxxx:(id<x>)x\n"
" y:(id<yyyyyyyyyyyyyyyyyyyy>)y\n"
" NS_DESIGNATED_INITIALIZER;",
getLLVMStyleWithColumns(60));
}
TEST_F(FormatTest, FormatObjCMethodExpr) {
verifyFormat("[foo bar:baz];");
verifyFormat("return [foo bar:baz];");
verifyFormat("return (a)[foo bar:baz];");
verifyFormat("f([foo bar:baz]);");
verifyFormat("f(2, [foo bar:baz]);");
verifyFormat("f(2, a ? b : c);");
verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];");
// Unary operators.
verifyFormat("int a = +[foo bar:baz];");
verifyFormat("int a = -[foo bar:baz];");
verifyFormat("int a = ![foo bar:baz];");
verifyFormat("int a = ~[foo bar:baz];");
verifyFormat("int a = ++[foo bar:baz];");
verifyFormat("int a = --[foo bar:baz];");
verifyFormat("int a = sizeof [foo bar:baz];");
verifyFormat("int a = alignof [foo bar:baz];", getGoogleStyle());
verifyFormat("int a = &[foo bar:baz];");
verifyFormat("int a = *[foo bar:baz];");
// FIXME: Make casts work, without breaking f()[4].
//verifyFormat("int a = (int)[foo bar:baz];");
//verifyFormat("return (int)[foo bar:baz];");
//verifyFormat("(void)[foo bar:baz];");
verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];");
// Binary operators.
verifyFormat("[foo bar:baz], [foo bar:baz];");
verifyFormat("[foo bar:baz] = [foo bar:baz];");
verifyFormat("[foo bar:baz] *= [foo bar:baz];");
verifyFormat("[foo bar:baz] /= [foo bar:baz];");
verifyFormat("[foo bar:baz] %= [foo bar:baz];");
verifyFormat("[foo bar:baz] += [foo bar:baz];");
verifyFormat("[foo bar:baz] -= [foo bar:baz];");
verifyFormat("[foo bar:baz] <<= [foo bar:baz];");
verifyFormat("[foo bar:baz] >>= [foo bar:baz];");
verifyFormat("[foo bar:baz] &= [foo bar:baz];");
verifyFormat("[foo bar:baz] ^= [foo bar:baz];");
verifyFormat("[foo bar:baz] |= [foo bar:baz];");
verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];");
verifyFormat("[foo bar:baz] || [foo bar:baz];");
verifyFormat("[foo bar:baz] && [foo bar:baz];");
verifyFormat("[foo bar:baz] | [foo bar:baz];");
verifyFormat("[foo bar:baz] ^ [foo bar:baz];");
verifyFormat("[foo bar:baz] & [foo bar:baz];");
verifyFormat("[foo bar:baz] == [foo bar:baz];");
verifyFormat("[foo bar:baz] != [foo bar:baz];");
verifyFormat("[foo bar:baz] >= [foo bar:baz];");
verifyFormat("[foo bar:baz] <= [foo bar:baz];");
verifyFormat("[foo bar:baz] > [foo bar:baz];");
verifyFormat("[foo bar:baz] < [foo bar:baz];");
verifyFormat("[foo bar:baz] >> [foo bar:baz];");
verifyFormat("[foo bar:baz] << [foo bar:baz];");
verifyFormat("[foo bar:baz] - [foo bar:baz];");
verifyFormat("[foo bar:baz] + [foo bar:baz];");
verifyFormat("[foo bar:baz] * [foo bar:baz];");
verifyFormat("[foo bar:baz] / [foo bar:baz];");
verifyFormat("[foo bar:baz] % [foo bar:baz];");
// Whew!
verifyFormat("return in[42];");
verifyFormat("for (auto v : in[1]) {\n}");
verifyFormat("for (int i = 0; i < in[a]; ++i) {\n}");
verifyFormat("for (int i = 0; in[a] < i; ++i) {\n}");
verifyFormat("for (int i = 0; i < n; ++i, ++in[a]) {\n}");
verifyFormat("for (int i = 0; i < n; ++i, in[a]++) {\n}");
verifyFormat("for (int i = 0; i < f(in[a]); ++i, in[a]++) {\n}");
verifyFormat("for (id foo in [self getStuffFor:bla]) {\n"
"}");
verifyFormat("[self aaaaa:MACRO(a, b:, c:)];");
verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];");
verifyFormat("[self stuffWithInt:a ? b : c float:4.5];");
verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];");
verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];");
verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]");
verifyFormat("[button setAction:@selector(zoomOut:)];");
verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];");
verifyFormat("arr[[self indexForFoo:a]];");
verifyFormat("throw [self errorFor:a];");
verifyFormat("@throw [self errorFor:a];");
verifyFormat("[(id)foo bar:(id)baz quux:(id)snorf];");
verifyFormat("[(id)foo bar:(id) ? baz : quux];");
verifyFormat("4 > 4 ? (id)a : (id)baz;");
// This tests that the formatter doesn't break after "backing" but before ":",
// which would be at 80 columns.
verifyFormat(
"void f() {\n"
" if ((self = [super initWithContentRect:contentRect\n"
" styleMask:styleMask ?: otherMask\n"
" backing:NSBackingStoreBuffered\n"
" defer:YES]))");
verifyFormat(
"[foo checkThatBreakingAfterColonWorksOk:\n"
" [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");
verifyFormat("[myObj short:arg1 // Force line break\n"
" longKeyword:arg2 != nil ? arg2 : @\"longKeyword\"\n"
" evenLongerKeyword:arg3 ?: @\"evenLongerKeyword\"\n"
" error:arg4];");
verifyFormat(
"void f() {\n"
" popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
" initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
" pos.width(), pos.height())\n"
" styleMask:NSBorderlessWindowMask\n"
" backing:NSBackingStoreBuffered\n"
" defer:NO]);\n"
"}");
verifyFormat(
"void f() {\n"
" popup_wdow_.reset([[RenderWidgetPopupWindow alloc]\n"
" iniithContentRect:NSMakRet(origin_global.x, origin_global.y,\n"
" pos.width(), pos.height())\n"
" syeMask:NSBorderlessWindowMask\n"
" bking:NSBackingStoreBuffered\n"
" der:NO]);\n"
"}",
getLLVMStyleWithColumns(70));
verifyFormat(
"void f() {\n"
" popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
" initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
" pos.width(), pos.height())\n"
" styleMask:NSBorderlessWindowMask\n"
" backing:NSBackingStoreBuffered\n"
" defer:NO]);\n"
"}",
getChromiumStyle(FormatStyle::LK_Cpp));
verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n"
" with:contentsNativeView];");
verifyFormat(
"[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n"
" owner:nillllll];");
verifyFormat(
"[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n"
" forType:kBookmarkButtonDragType];");
verifyFormat("[defaultCenter addObserver:self\n"
" selector:@selector(willEnterFullscreen)\n"
" name:kWillEnterFullscreenNotification\n"
" object:nil];");
verifyFormat("[image_rep drawInRect:drawRect\n"
" fromRect:NSZeroRect\n"
" operation:NSCompositeCopy\n"
" fraction:1.0\n"
" respectFlipped:NO\n"
" hints:nil];");
verifyFormat(
"scoped_nsobject<NSTextField> message(\n"
" // The frame will be fixed up when |-setMessageText:| is called.\n"
" [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);");
verifyFormat("[self aaaaaa:bbbbbbbbbbbbb\n"
" aaaaaaaaaa:bbbbbbbbbbbbbbbbb\n"
" aaaaa:bbbbbbbbbbb + bbbbbbbbbbbb\n"
" aaaa:bbb];");
verifyFormat("[self param:function( //\n"
" parameter)]");
verifyFormat(
"[self aaaaaaaaaa:aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n"
" aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n"
" aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa];");
// Variadic parameters.
verifyFormat(
"NSArray *myStrings = [NSArray stringarray:@\"a\", @\"b\", nil];");
verifyFormat(
"[self aaaaaaaaaaaaa:aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n"
" aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa];");
verifyFormat("[self // break\n"
" a:a\n"
" aaa:aaa];");
verifyFormat("bool a = ([aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaa ||\n"
" [aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaaaaa);");
}
TEST_F(FormatTest, ObjCAt) {
verifyFormat("@autoreleasepool");
verifyFormat("@catch");
verifyFormat("@class");
verifyFormat("@compatibility_alias");
verifyFormat("@defs");
verifyFormat("@dynamic");
verifyFormat("@encode");
verifyFormat("@end");
verifyFormat("@finally");
verifyFormat("@implementation");
verifyFormat("@import");
verifyFormat("@interface");
verifyFormat("@optional");
verifyFormat("@package");
verifyFormat("@private");
verifyFormat("@property");
verifyFormat("@protected");
verifyFormat("@protocol");
verifyFormat("@public");
verifyFormat("@required");
verifyFormat("@selector");
verifyFormat("@synchronized");
verifyFormat("@synthesize");
verifyFormat("@throw");
verifyFormat("@try");
EXPECT_EQ("@interface", format("@ interface"));
// The precise formatting of this doesn't matter, nobody writes code like
// this.
verifyFormat("@ /*foo*/ interface");
}
TEST_F(FormatTest, ObjCSnippets) {
verifyFormat("@autoreleasepool {\n"
" foo();\n"
"}");
verifyFormat("@class Foo, Bar;");
verifyFormat("@compatibility_alias AliasName ExistingClass;");
verifyFormat("@dynamic textColor;");
verifyFormat("char *buf1 = @encode(int *);");
verifyFormat("char *buf1 = @encode(typeof(4 * 5));");
verifyFormat("char *buf1 = @encode(int **);");
verifyFormat("Protocol *proto = @protocol(p1);");
verifyFormat("SEL s = @selector(foo:);");
verifyFormat("@synchronized(self) {\n"
" f();\n"
"}");
verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
verifyFormat("@property (assign, getter=isEditable) BOOL editable;",
getMozillaStyle());
verifyFormat("@property BOOL editable;", getMozillaStyle());
verifyFormat("@property (assign, getter=isEditable) BOOL editable;",
getWebKitStyle());
verifyFormat("@property BOOL editable;", getWebKitStyle());
verifyFormat("@import foo.bar;\n"
"@import baz;");
}
TEST_F(FormatTest, ObjCLiterals) {
verifyFormat("@\"String\"");
verifyFormat("@1");
verifyFormat("@+4.8");
verifyFormat("@-4");
verifyFormat("@1LL");
verifyFormat("@.5");
verifyFormat("@'c'");
verifyFormat("@true");
verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);");
verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);");
verifyFormat("NSNumber *favoriteColor = @(Green);");
verifyFormat("NSString *path = @(getenv(\"PATH\"));");
verifyFormat("[dictionary setObject:@(1) forKey:@\"number\"];");
}
TEST_F(FormatTest, ObjCDictLiterals) {
verifyFormat("@{");
verifyFormat("@{}");
verifyFormat("@{@\"one\" : @1}");
verifyFormat("return @{@\"one\" : @1;");
verifyFormat("@{@\"one\" : @1}");
verifyFormat("@{@\"one\" : @{@2 : @1}}");
verifyFormat("@{\n"
" @\"one\" : @{@2 : @1},\n"
"}");
verifyFormat("@{1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2}");
verifyFormat("[self setDict:@{}");
verifyFormat("[self setDict:@{@1 : @2}");
verifyFormat("NSLog(@\"%@\", @{@1 : @2, @2 : @3}[@1]);");
verifyFormat(
"NSDictionary *masses = @{@\"H\" : @1.0078, @\"He\" : @4.0026};");
verifyFormat(
"NSDictionary *settings = @{AVEncoderKey : @(AVAudioQualityMax)};");
verifyFormat(
"NSDictionary *d = @{\n"
" @\"nam\" : NSUserNam(),\n"
" @\"dte\" : [NSDate date],\n"
" @\"processInfo\" : [NSProcessInfo processInfo]\n"
"};");
verifyFormat(
"@{\n"
" NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : "
"regularFont,\n"
"};");
verifyGoogleFormat(
"@{\n"
" NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : "
"regularFont,\n"
"};");
verifyFormat(
"@{\n"
" NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n"
" reeeeeeeeeeeeeeeeeeeeeeeegularFont,\n"
"};");
// We should try to be robust in case someone forgets the "@".
verifyFormat(
"NSDictionary *d = {\n"
" @\"nam\" : NSUserNam(),\n"
" @\"dte\" : [NSDate date],\n"
" @\"processInfo\" : [NSProcessInfo processInfo]\n"
"};");
verifyFormat("NSMutableDictionary *dictionary =\n"
" [NSMutableDictionary dictionaryWithDictionary:@{\n"
" aaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaa,\n"
" bbbbbbbbbbbbbbbbbb : bbbbb,\n"
" cccccccccccccccc : ccccccccccccccc\n"
" }];");
}
TEST_F(FormatTest, ObjCArrayLiterals) {
verifyFormat("@[");
verifyFormat("@[]");
verifyFormat(
"NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];");
verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];");
verifyFormat("NSArray *array = @[ [foo description] ];");
verifyFormat(
"NSArray *some_variable = @[\n"
" aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\"\n"
"];");
verifyFormat("NSArray *some_variable = @[\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
"];");
verifyGoogleFormat("NSArray *some_variable = @[\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\"\n"
"];");
verifyFormat("NSArray *array = @[\n"
" @\"a\",\n"
" @\"a\",\n" // Trailing comma -> one per line.
"];");
// We should try to be robust in case someone forgets the "@".
verifyFormat("NSArray *some_variable = [\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
" @\"aaaaaaaaaaaaaaaaa\",\n"
"];");
verifyFormat(
"- (NSAttributedString *)attributedStringForSegment:(NSUInteger)segment\n"
" index:(NSUInteger)index\n"
" nonDigitAttributes:\n"
" (NSDictionary *)noDigitAttributes;");
verifyFormat(
"[someFunction someLooooooooooooongParameter:\n"
" @[ NSBundle.mainBundle.infoDictionary[@\"a\"] ]];");
}
TEST_F(FormatTest, ReformatRegionAdjustsIndent) {
EXPECT_EQ("{\n"
"{\n"
"a;\n"
"b;\n"
"}\n"
"}",
format("{\n"
"{\n"
"a;\n"
" b;\n"
"}\n"
"}",
13, 2, getLLVMStyle()));
EXPECT_EQ("{\n"
"{\n"
" a;\n"
"b;\n"
"}\n"
"}",
format("{\n"
"{\n"
" a;\n"
"b;\n"
"}\n"
"}",
9, 2, getLLVMStyle()));
EXPECT_EQ("{\n"
"{\n"
"public:\n"
" b;\n"
"}\n"
"}",
format("{\n"
"{\n"
"public:\n"
" b;\n"
"}\n"
"}",
17, 2, getLLVMStyle()));
EXPECT_EQ("{\n"
"{\n"
"a;\n"
"}\n"
"{\n"
" b; //\n"
"}\n"
"}",
format("{\n"
"{\n"
"a;\n"
"}\n"
"{\n"
" b; //\n"
"}\n"
"}",
22, 2, getLLVMStyle()));
EXPECT_EQ(" {\n"
" a; //\n"
" }",
format(" {\n"
"a; //\n"
" }",
4, 2, getLLVMStyle()));
EXPECT_EQ("void f() {}\n"
"void g() {}",
format("void f() {}\n"
"void g() {}",
13, 0, getLLVMStyle()));
EXPECT_EQ("int a; // comment\n"
" // line 2\n"
"int b;",
format("int a; // comment\n"
" // line 2\n"
" int b;",
35, 0, getLLVMStyle()));
EXPECT_EQ(" int a;\n"
" void\n"
" ffffff() {\n"
" }",
format(" int a;\n"
"void ffffff() {}",
11, 0, getLLVMStyleWithColumns(11)));
EXPECT_EQ(" void f() {\n"
"#define A 1\n"
" }",
format(" void f() {\n"
" #define A 1\n" // Format this line.
" }",
20, 0, getLLVMStyle()));
EXPECT_EQ(" void f() {\n"
" int i;\n"
"#define A \\\n"
" int i; \\\n"
" int j;\n"
" int k;\n"
" }",
format(" void f() {\n"
" int i;\n"
"#define A \\\n"
" int i; \\\n"
" int j;\n"
" int k;\n" // Format this line.
" }",
67, 0, getLLVMStyle()));
}
TEST_F(FormatTest, BreaksStringLiterals) {
EXPECT_EQ("\"some text \"\n"
"\"other\";",
format("\"some text other\";", getLLVMStyleWithColumns(12)));
EXPECT_EQ("\"some text \"\n"
"\"other\";",
format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
EXPECT_EQ(
"#define A \\\n"
" \"some \" \\\n"
" \"text \" \\\n"
" \"other\";",
format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
EXPECT_EQ(
"#define A \\\n"
" \"so \" \\\n"
" \"text \" \\\n"
" \"other\";",
format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
EXPECT_EQ("\"some text\"",
format("\"some text\"", getLLVMStyleWithColumns(1)));
EXPECT_EQ("\"some text\"",
format("\"some text\"", getLLVMStyleWithColumns(11)));
EXPECT_EQ("\"some \"\n"
"\"text\"",
format("\"some text\"", getLLVMStyleWithColumns(10)));
EXPECT_EQ("\"some \"\n"
"\"text\"",
format("\"some text\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"some\"\n"
"\" tex\"\n"
"\"t\"",
format("\"some text\"", getLLVMStyleWithColumns(6)));
EXPECT_EQ("\"some\"\n"
"\" tex\"\n"
"\" and\"",
format("\"some tex and\"", getLLVMStyleWithColumns(6)));
EXPECT_EQ("\"some\"\n"
"\"/tex\"\n"
"\"/and\"",
format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
EXPECT_EQ("variable =\n"
" \"long string \"\n"
" \"literal\";",
format("variable = \"long string literal\";",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("variable = f(\n"
" \"long string \"\n"
" \"literal\",\n"
" short,\n"
" loooooooooooooooooooong);",
format("variable = f(\"long string literal\", short, "
"loooooooooooooooooooong);",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("f(g(\"long string \"\n"
" \"literal\"),\n"
" b);",
format("f(g(\"long string literal\"), b);",
getLLVMStyleWithColumns(20)));
EXPECT_EQ("f(g(\"long string \"\n"
" \"literal\",\n"
" a),\n"
" b);",
format("f(g(\"long string literal\", a), b);",
getLLVMStyleWithColumns(20)));
EXPECT_EQ(
"f(\"one two\".split(\n"
" variable));",
format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
EXPECT_EQ("f(\"one two three four five six \"\n"
" \"seven\".split(\n"
" really_looooong_variable));",
format("f(\"one two three four five six seven\"."
"split(really_looooong_variable));",
getLLVMStyleWithColumns(33)));
EXPECT_EQ("f(\"some \"\n"
" \"text\",\n"
" other);",
format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
// Only break as a last resort.
verifyFormat(
"aaaaaaaaaaaaaaaaaaaa(\n"
" aaaaaaaaaaaaaaaaaaaa,\n"
" aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
EXPECT_EQ(
"\"splitmea\"\n"
"\"trandomp\"\n"
"\"oint\"",
format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
EXPECT_EQ(
"\"split/\"\n"
"\"pathat/\"\n"
"\"slashes\"",
format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
EXPECT_EQ(
"\"split/\"\n"
"\"pathat/\"\n"
"\"slashes\"",
format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
EXPECT_EQ("\"split at \"\n"
"\"spaces/at/\"\n"
"\"slashes.at.any$\"\n"
"\"non-alphanumeric%\"\n"
"\"1111111111characte\"\n"
"\"rs\"",
format("\"split at "
"spaces/at/"
"slashes.at."
"any$non-"
"alphanumeric%"
"1111111111characte"
"rs\"",
getLLVMStyleWithColumns(20)));
// Verify that splitting the strings understands
// Style::AlwaysBreakBeforeMultilineStrings.
EXPECT_EQ("aaaaaaaaaaaa(aaaaaaaaaaaaa,\n"
" \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n"
" \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");",
format("aaaaaaaaaaaa(aaaaaaaaaaaaa, \"aaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaaa\");",
getGoogleStyle()));
EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
" \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";",
format("return \"aaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaaa\";",
getGoogleStyle()));
EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
" \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
format("llvm::outs() << "
"\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaa\";"));
EXPECT_EQ("ffff(\n"
" {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
" \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa "
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
getGoogleStyle()));
FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
AlignLeft.AlignEscapedNewlinesLeft = true;
EXPECT_EQ(
"#define A \\\n"
" \"some \" \\\n"
" \"text \" \\\n"
" \"other\";",
format("#define A \"some text other\";", AlignLeft));
}
TEST_F(FormatTest, BreaksStringLiteralsWithTabs) {
EXPECT_EQ(
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"(\n"
" \"x\t\");",
format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaa("
"\"x\t\");"));
}
TEST_F(FormatTest, BreaksWideAndNSStringLiterals) {
EXPECT_EQ(
"u8\"utf8 string \"\n"
"u8\"literal\";",
format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16)));
EXPECT_EQ(
"u\"utf16 string \"\n"
"u\"literal\";",
format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16)));
EXPECT_EQ(
"U\"utf32 string \"\n"
"U\"literal\";",
format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16)));
EXPECT_EQ("L\"wide string \"\n"
"L\"literal\";",
format("L\"wide string literal\";", getGoogleStyleWithColumns(16)));
EXPECT_EQ("@\"NSString \"\n"
"@\"literal\";",
format("@\"NSString literal\";", getGoogleStyleWithColumns(19)));
// This input makes clang-format try to split the incomplete unicode escape
// sequence, which used to lead to a crasher.
verifyNoCrash(
"aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
getLLVMStyleWithColumns(60));
}
TEST_F(FormatTest, DoesNotBreakRawStringLiterals) {
FormatStyle Style = getGoogleStyleWithColumns(15);
EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style));
EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style));
EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style));
EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style));
EXPECT_EQ("u8R\"x(raw literal)x\";",
format("u8R\"x(raw literal)x\";", Style));
}
TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) {
FormatStyle Style = getLLVMStyleWithColumns(20);
EXPECT_EQ(
"_T(\"aaaaaaaaaaaaaa\")\n"
"_T(\"aaaaaaaaaaaaaa\")\n"
"_T(\"aaaaaaaaaaaa\")",
format(" _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style));
EXPECT_EQ("f(x, _T(\"aaaaaaaaa\")\n"
" _T(\"aaaaaa\"),\n"
" z);",
format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style));
// FIXME: Handle embedded spaces in one iteration.
// EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n"
// "_T(\"aaaaaaaaaaaaa\")\n"
// "_T(\"aaaaaaaaaaaaa\")\n"
// "_T(\"a\")",
// format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
// getLLVMStyleWithColumns(20)));
EXPECT_EQ(
"_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style));
EXPECT_EQ("f(\n"
"#if !TEST\n"
" _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
"#endif\n"
" );",
format("f(\n"
"#if !TEST\n"
"_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
"#endif\n"
");"));
EXPECT_EQ("f(\n"
"\n"
" _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));",
format("f(\n"
"\n"
"_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));"));
}
TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) {
EXPECT_EQ(
"aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
format("aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";"));
}
TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) {
EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);",
format("f(g(R\"x(raw literal)x\", a), b);", getGoogleStyle()));
EXPECT_EQ("fffffffffff(g(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\",\n"
" a),\n"
" b);",
format("fffffffffff(g(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\", a), b);",
getGoogleStyleWithColumns(20)));
EXPECT_EQ("fffffffffff(\n"
" g(R\"x(qqq\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\",\n"
" a),\n"
" b);",
format("fffffffffff(g(R\"x(qqq\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\", a), b);",
getGoogleStyleWithColumns(20)));
EXPECT_EQ("fffffffffff(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\");",
format("fffffffffff(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\");",
getGoogleStyleWithColumns(20)));
EXPECT_EQ("fffffffffff(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\" + bbbbbb);",
format("fffffffffff(R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\" + bbbbbb);",
getGoogleStyleWithColumns(20)));
EXPECT_EQ("fffffffffff(\n"
" R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\" +\n"
" bbbbbb);",
format("fffffffffff(\n"
" R\"x(\n"
"multiline raw string literal xxxxxxxxxxxxxx\n"
")x\" + bbbbbb);",
getGoogleStyleWithColumns(20)));
}
TEST_F(FormatTest, SkipsUnknownStringLiterals) {
verifyFormat("string a = \"unterminated;");
EXPECT_EQ("function(\"unterminated,\n"
" OtherParameter);",
format("function( \"unterminated,\n"
" OtherParameter);"));
}
TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) {
FormatStyle Style = getLLVMStyle();
Style.Standard = FormatStyle::LS_Cpp03;
EXPECT_EQ("#define x(_a) printf(\"foo\" _a);",
format("#define x(_a) printf(\"foo\"_a);", Style));
}
TEST_F(FormatTest, UnderstandsCpp1y) {
verifyFormat("int bi{1'000'000};");
}
TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
" \"ddeeefff\");",
format("someFunction(\"aaabbbcccdddeeefff\");",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("someFunction1234567890(\n"
" \"aaabbbcccdddeeefff\");",
format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
getLLVMStyleWithColumns(26)));
EXPECT_EQ("someFunction1234567890(\n"
" \"aaabbbcccdddeeeff\"\n"
" \"f\");",
format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("someFunction1234567890(\n"
" \"aaabbbcccdddeeeff\"\n"
" \"f\");",
format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
getLLVMStyleWithColumns(24)));
EXPECT_EQ("someFunction(\"aaabbbcc \"\n"
" \"ddde \"\n"
" \"efff\");",
format("someFunction(\"aaabbbcc ddde efff\");",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
" \"ddeeefff\");",
format("someFunction(\"aaabbbccc ddeeefff\");",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("someFunction1234567890(\n"
" \"aaabb \"\n"
" \"cccdddeeefff\");",
format("someFunction1234567890(\"aaabb cccdddeeefff\");",
getLLVMStyleWithColumns(25)));
EXPECT_EQ("#define A \\\n"
" string s = \\\n"
" \"123456789\" \\\n"
" \"0\"; \\\n"
" int i;",
format("#define A string s = \"1234567890\"; int i;",
getLLVMStyleWithColumns(20)));
// FIXME: Put additional penalties on breaking at non-whitespace locations.
EXPECT_EQ("someFunction(\"aaabbbcc \"\n"
" \"dddeeeff\"\n"
" \"f\");",
format("someFunction(\"aaabbbcc dddeeefff\");",
getLLVMStyleWithColumns(25)));
}
TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
EXPECT_EQ("\"\\a\"",
format("\"\\a\"", getLLVMStyleWithColumns(3)));
EXPECT_EQ("\"\\\"",
format("\"\\\"", getLLVMStyleWithColumns(2)));
EXPECT_EQ("\"test\"\n"
"\"\\n\"",
format("\"test\\n\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"tes\\\\\"\n"
"\"n\"",
format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"\\\\\\\\\"\n"
"\"\\n\"",
format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"\\uff01\"",
format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"\\uff01\"\n"
"\"test\"",
format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
EXPECT_EQ("\"\\Uff01ff02\"",
format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
EXPECT_EQ("\"\\x000000000001\"\n"
"\"next\"",
format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
EXPECT_EQ("\"\\x000000000001next\"",
format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
EXPECT_EQ("\"\\x000000000001\"",
format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
EXPECT_EQ("\"test\"\n"
"\"\\000000\"\n"
"\"000001\"",
format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
EXPECT_EQ("\"test\\000\"\n"
"\"00000000\"\n"
"\"1\"",
format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
}
TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
verifyFormat("void f() {\n"
" return g() {}\n"
" void h() {}");
verifyFormat("int a[] = {void forgot_closing_brace(){f();\n"
"g();\n"
"}");
}
TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) {
verifyFormat(
"void f() { return C{param1, param2}.SomeCall(param1, param2); }");
}
TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
verifyFormat("class X {\n"
" void f() {\n"
" }\n"
"};",
getLLVMStyleWithColumns(12));
}
TEST_F(FormatTest, ConfigurableIndentWidth) {
FormatStyle EightIndent = getLLVMStyleWithColumns(18);
EightIndent.IndentWidth = 8;
EightIndent.ContinuationIndentWidth = 8;
verifyFormat("void f() {\n"
" someFunction();\n"
" if (true) {\n"
" f();\n"
" }\n"
"}",
EightIndent);
verifyFormat("class X {\n"
" void f() {\n"
" }\n"
"};",
EightIndent);
verifyFormat("int x[] = {\n"
" call(),\n"
" call()};",
EightIndent);
}
TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) {
verifyFormat("double\n"
"f();",
getLLVMStyleWithColumns(8));
}
TEST_F(FormatTest, ConfigurableUseOfTab) {
FormatStyle Tab = getLLVMStyleWithColumns(42);
Tab.IndentWidth = 8;
Tab.UseTab = FormatStyle::UT_Always;
Tab.AlignEscapedNewlinesLeft = true;
EXPECT_EQ("if (aaaaaaaa && // q\n"
" bb)\t\t// w\n"
"\t;",
format("if (aaaaaaaa &&// q\n"
"bb)// w\n"
";",
Tab));
EXPECT_EQ("if (aaa && bbb) // w\n"
"\t;",
format("if(aaa&&bbb)// w\n"
";",
Tab));
verifyFormat("class X {\n"
"\tvoid f() {\n"
"\t\tsomeFunction(parameter1,\n"
"\t\t\t parameter2);\n"
"\t}\n"
"};",
Tab);
verifyFormat("#define A \\\n"
"\tvoid f() { \\\n"
"\t\tsomeFunction( \\\n"
"\t\t parameter1, \\\n"
"\t\t parameter2); \\\n"
"\t}",
Tab);
EXPECT_EQ("void f() {\n"
"\tf();\n"
"\tg();\n"
"}",
format("void f() {\n"
"\tf();\n"
"\tg();\n"
"}",
0, 0, Tab));
EXPECT_EQ("void f() {\n"
"\tf();\n"
"\tg();\n"
"}",
format("void f() {\n"
"\tf();\n"
"\tg();\n"
"}",
16, 0, Tab));
EXPECT_EQ("void f() {\n"
" \tf();\n"
"\tg();\n"
"}",
format("void f() {\n"
" \tf();\n"
" \tg();\n"
"}",
21, 0, Tab));
Tab.TabWidth = 4;
Tab.IndentWidth = 8;
verifyFormat("class TabWidth4Indent8 {\n"
"\t\tvoid f() {\n"
"\t\t\t\tsomeFunction(parameter1,\n"
"\t\t\t\t\t\t\t parameter2);\n"
"\t\t}\n"
"};",
Tab);
Tab.TabWidth = 4;
Tab.IndentWidth = 4;
verifyFormat("class TabWidth4Indent4 {\n"
"\tvoid f() {\n"
"\t\tsomeFunction(parameter1,\n"
"\t\t\t\t\t parameter2);\n"
"\t}\n"
"};",
Tab);
Tab.TabWidth = 8;
Tab.IndentWidth = 4;
verifyFormat("class TabWidth8Indent4 {\n"
" void f() {\n"
"\tsomeFunction(parameter1,\n"
"\t\t parameter2);\n"
" }\n"
"};",
Tab);
Tab.TabWidth = 8;
Tab.IndentWidth = 8;
EXPECT_EQ("/*\n"
"\t a\t\tcomment\n"
"\t in multiple lines\n"
" */",
format(" /*\t \t \n"
" \t \t a\t\tcomment\t \t\n"
" \t \t in multiple lines\t\n"
" \t */",
Tab));
Tab.UseTab = FormatStyle::UT_ForIndentation;
verifyFormat("{\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
"};",
Tab);
verifyFormat("enum A {\n"
"\ta1, // Force multiple lines\n"
"\ta2,\n"
"\ta3\n"
"};",
Tab);
EXPECT_EQ("if (aaaaaaaa && // q\n"
" bb) // w\n"
"\t;",
format("if (aaaaaaaa &&// q\n"
"bb)// w\n"
";",
Tab));
verifyFormat("class X {\n"
"\tvoid f() {\n"
"\t\tsomeFunction(parameter1,\n"
"\t\t parameter2);\n"
"\t}\n"
"};",
Tab);
verifyFormat("{\n"
"\tQ({\n"
"\t\tint a;\n"
"\t\tsomeFunction(aaaaaaaa,\n"
"\t\t bbbbbbb);\n"
"\t}, p);\n"
"}",
Tab);
EXPECT_EQ("{\n"
"\t/* aaaa\n"
"\t bbbb */\n"
"}",
format("{\n"
"/* aaaa\n"
" bbbb */\n"
"}",
Tab));
EXPECT_EQ("{\n"
"\t/*\n"
"\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"\t bbbbbbbbbbbbb\n"
"\t*/\n"
"}",
format("{\n"
"/*\n"
" aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
"*/\n"
"}",
Tab));
EXPECT_EQ("{\n"
"\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"\t// bbbbbbbbbbbbb\n"
"}",
format("{\n"
"\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
"}",
Tab));
EXPECT_EQ("{\n"
"\t/*\n"
"\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
"\t bbbbbbbbbbbbb\n"
"\t*/\n"
"}",
format("{\n"
"\t/*\n"
"\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
"\t*/\n"
"}",
Tab));
EXPECT_EQ("{\n"
"\t/*\n"
"\n"
"\t*/\n"
"}",
format("{\n"
"\t/*\n"
"\n"
"\t*/\n"
"}",
Tab));
EXPECT_EQ("{\n"
"\t/*\n"
" asdf\n"
"\t*/\n"
"}",
format("{\n"
"\t/*\n"
" asdf\n"
"\t*/\n"
"}",
Tab));
Tab.UseTab = FormatStyle::UT_Never;
EXPECT_EQ("/*\n"
" a\t\tcomment\n"
" in multiple lines\n"
" */",
format(" /*\t \t \n"
" \t \t a\t\tcomment\t \t\n"
" \t \t in multiple lines\t\n"
" \t */",
Tab));
EXPECT_EQ("/* some\n"
" comment */",
format(" \t \t /* some\n"
" \t \t comment */",
Tab));
EXPECT_EQ("int a; /* some\n"
" comment */",
format(" \t \t int a; /* some\n"
" \t \t comment */",
Tab));
EXPECT_EQ("int a; /* some\n"
"comment */",
format(" \t \t int\ta; /* some\n"
" \t \t comment */",
Tab));
EXPECT_EQ("f(\"\t\t\"); /* some\n"
" comment */",
format(" \t \t f(\"\t\t\"); /* some\n"
" \t \t comment */",
Tab));
EXPECT_EQ("{\n"
" /*\n"
" * Comment\n"
" */\n"
" int i;\n"
"}",
format("{\n"
"\t/*\n"
"\t * Comment\n"
"\t */\n"
"\t int i;\n"
"}"));
}
TEST_F(FormatTest, CalculatesOriginalColumn) {
EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"q\"; /* some\n"
" comment */",
format(" \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"q\"; /* some\n"
" comment */",
getLLVMStyle()));
EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
"/* some\n"
" comment */",
format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
" /* some\n"
" comment */",
getLLVMStyle()));
EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"qqq\n"
"/* some\n"
" comment */",
format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"qqq\n"
" /* some\n"
" comment */",
getLLVMStyle()));
EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"wwww; /* some\n"
" comment */",
format(" inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
"wwww; /* some\n"
" comment */",
getLLVMStyle()));
}
TEST_F(FormatTest, ConfigurableSpaceBeforeParens) {
FormatStyle NoSpace = getLLVMStyle();
NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never;
verifyFormat("while(true)\n"
" continue;", NoSpace);
verifyFormat("for(;;)\n"
" continue;", NoSpace);
verifyFormat("if(true)\n"
" f();\n"
"else if(true)\n"
" f();", NoSpace);
verifyFormat("do {\n"
" do_something();\n"
"} while(something());", NoSpace);
verifyFormat("switch(x) {\n"
"default:\n"
" break;\n"
"}", NoSpace);
verifyFormat("auto i = std::make_unique<int>(5);", NoSpace);
verifyFormat("size_t x = sizeof(x);", NoSpace);
verifyFormat("auto f(int x) -> decltype(x);", NoSpace);
verifyFormat("int f(T x) noexcept(x.create());", NoSpace);
verifyFormat("alignas(128) char a[128];", NoSpace);
verifyFormat("size_t x = alignof(MyType);", NoSpace);
verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace);
verifyFormat("int f() throw(Deprecated);", NoSpace);
FormatStyle Space = getLLVMStyle();
Space.SpaceBeforeParens = FormatStyle::SBPO_Always;
verifyFormat("int f ();", Space);
verifyFormat("void f (int a, T b) {\n"
" while (true)\n"
" continue;\n"
"}",
Space);
verifyFormat("if (true)\n"
" f ();\n"
"else if (true)\n"
" f ();",
Space);
verifyFormat("do {\n"
" do_something ();\n"
"} while (something ());",
Space);
verifyFormat("switch (x) {\n"
"default:\n"
" break;\n"
"}",
Space);
verifyFormat("A::A () : a (1) {}", Space);
verifyFormat("void f () __attribute__ ((asdf));", Space);
verifyFormat("*(&a + 1);\n"
"&((&a)[1]);\n"
"a[(b + c) * d];\n"
"(((a + 1) * 2) + 3) * 4;",
Space);
verifyFormat("#define A(x) x", Space);
verifyFormat("#define A (x) x", Space);
verifyFormat("#if defined(x)\n"
"#endif",
Space);
verifyFormat("auto i = std::make_unique<int> (5);", Space);
verifyFormat("size_t x = sizeof (x);", Space);
verifyFormat("auto f (int x) -> decltype (x);", Space);
verifyFormat("int f (T x) noexcept (x.create ());", Space);
verifyFormat("alignas (128) char a[128];", Space);
verifyFormat("size_t x = alignof (MyType);", Space);
verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space);
verifyFormat("int f () throw (Deprecated);", Space);
}
TEST_F(FormatTest, ConfigurableSpacesInParentheses) {
FormatStyle Spaces = getLLVMStyle();
Spaces.SpacesInParentheses = true;
verifyFormat("call( x, y, z );", Spaces);
verifyFormat("call();", Spaces);
verifyFormat("std::function<void( int, int )> callback;", Spaces);
verifyFormat("while ( (bool)1 )\n"
" continue;", Spaces);
verifyFormat("for ( ;; )\n"
" continue;", Spaces);
verifyFormat("if ( true )\n"
" f();\n"
"else if ( true )\n"
" f();", Spaces);
verifyFormat("do {\n"
" do_something( (int)i );\n"
"} while ( something() );", Spaces);
verifyFormat("switch ( x ) {\n"
"default:\n"
" break;\n"
"}", Spaces);
Spaces.SpacesInParentheses = false;
Spaces.SpacesInCStyleCastParentheses = true;
verifyFormat("Type *A = ( Type * )P;", Spaces);
verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces);
verifyFormat("x = ( int32 )y;", Spaces);
verifyFormat("int a = ( int )(2.0f);", Spaces);
verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces);
verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces);
verifyFormat("#define x (( int )-1)", Spaces);
// Run the first set of tests again with:
Spaces.SpacesInParentheses = false,
Spaces.SpaceInEmptyParentheses = true;
Spaces.SpacesInCStyleCastParentheses = true;
verifyFormat("call(x, y, z);", Spaces);
verifyFormat("call( );", Spaces);
verifyFormat("std::function<void(int, int)> callback;", Spaces);
verifyFormat("while (( bool )1)\n"
" continue;", Spaces);
verifyFormat("for (;;)\n"
" continue;", Spaces);
verifyFormat("if (true)\n"
" f( );\n"
"else if (true)\n"
" f( );", Spaces);
verifyFormat("do {\n"
" do_something(( int )i);\n"
"} while (something( ));", Spaces);
verifyFormat("switch (x) {\n"
"default:\n"
" break;\n"
"}", Spaces);
// Run the first set of tests again with:
Spaces.SpaceAfterCStyleCast = true;
verifyFormat("call(x, y, z);", Spaces);
verifyFormat("call( );", Spaces);
verifyFormat("std::function<void(int, int)> callback;", Spaces);
verifyFormat("while (( bool ) 1)\n"
" continue;",
Spaces);
verifyFormat("for (;;)\n"
" continue;",
Spaces);
verifyFormat("if (true)\n"
" f( );\n"
"else if (true)\n"
" f( );",
Spaces);
verifyFormat("do {\n"
" do_something(( int ) i);\n"
"} while (something( ));",
Spaces);
verifyFormat("switch (x) {\n"
"default:\n"
" break;\n"
"}",
Spaces);
// Run subset of tests again with:
Spaces.SpacesInCStyleCastParentheses = false;
Spaces.SpaceAfterCStyleCast = true;
verifyFormat("while ((bool) 1)\n"
" continue;",
Spaces);
verifyFormat("do {\n"
" do_something((int) i);\n"
"} while (something( ));",
Spaces);
}
TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) {
verifyFormat("int a[5];");
verifyFormat("a[3] += 42;");
FormatStyle Spaces = getLLVMStyle();
Spaces.SpacesInSquareBrackets = true;
// Lambdas unchanged.
verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
verifyFormat("return [i, args...] {};", Spaces);
// Not lambdas.
verifyFormat("int a[ 5 ];", Spaces);
verifyFormat("a[ 3 ] += 42;", Spaces);
verifyFormat("constexpr char hello[]{\"hello\"};", Spaces);
verifyFormat("double &operator[](int i) { return 0; }\n"
"int i;",
Spaces);
verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces);
verifyFormat("int i = a[ a ][ a ]->f();", Spaces);
verifyFormat("int i = (*b)[ a ]->f();", Spaces);
}
TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
verifyFormat("int a = 5;");
verifyFormat("a += 42;");
verifyFormat("a or_eq 8;");
FormatStyle Spaces = getLLVMStyle();
Spaces.SpaceBeforeAssignmentOperators = false;
verifyFormat("int a= 5;", Spaces);
verifyFormat("a+= 42;", Spaces);
verifyFormat("a or_eq 8;", Spaces);
}
TEST_F(FormatTest, LinuxBraceBreaking) {
FormatStyle LinuxBraceStyle = getLLVMStyle();
LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux;
verifyFormat("namespace a\n"
"{\n"
"class A\n"
"{\n"
" void f()\n"
" {\n"
" if (true) {\n"
" a();\n"
" b();\n"
" }\n"
" }\n"
" void g() { return; }\n"
"};\n"
"struct B {\n"
" int x;\n"
"};\n"
"}\n",
LinuxBraceStyle);
verifyFormat("enum X {\n"
" Y = 0,\n"
"}\n",
LinuxBraceStyle);
verifyFormat("struct S {\n"
" int Type;\n"
" union {\n"
" int x;\n"
" double y;\n"
" } Value;\n"
" class C\n"
" {\n"
" MyFavoriteType Value;\n"
" } Class;\n"
"}\n",
LinuxBraceStyle);
}
TEST_F(FormatTest, StroustrupBraceBreaking) {
FormatStyle StroustrupBraceStyle = getLLVMStyle();
StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
verifyFormat("namespace a {\n"
"class A {\n"
" void f()\n"
" {\n"
" if (true) {\n"
" a();\n"
" b();\n"
" }\n"
" }\n"
" void g() { return; }\n"
"};\n"
"struct B {\n"
" int x;\n"
"};\n"
"}\n",
StroustrupBraceStyle);
verifyFormat("void foo()\n"
"{\n"
" if (a) {\n"
" a();\n"
" }\n"
" else {\n"
" b();\n"
" }\n"
"}\n",
StroustrupBraceStyle);
verifyFormat("#ifdef _DEBUG\n"
"int foo(int i = 0)\n"
"#else\n"
"int foo(int i = 5)\n"
"#endif\n"
"{\n"
" return i;\n"
"}",
StroustrupBraceStyle);
verifyFormat("void foo() {}\n"
"void bar()\n"
"#ifdef _DEBUG\n"
"{\n"
" foo();\n"
"}\n"
"#else\n"
"{\n"
"}\n"
"#endif",
StroustrupBraceStyle);
verifyFormat("void foobar() { int i = 5; }\n"
"#ifdef _DEBUG\n"
"void bar() {}\n"
"#else\n"
"void bar() { foobar(); }\n"
"#endif",
StroustrupBraceStyle);
}
TEST_F(FormatTest, AllmanBraceBreaking) {
FormatStyle AllmanBraceStyle = getLLVMStyle();
AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman;
verifyFormat("namespace a\n"
"{\n"
"class A\n"
"{\n"
" void f()\n"
" {\n"
" if (true)\n"
" {\n"
" a();\n"
" b();\n"
" }\n"
" }\n"
" void g() { return; }\n"
"};\n"
"struct B\n"
"{\n"
" int x;\n"
"};\n"
"}",
AllmanBraceStyle);
verifyFormat("void f()\n"
"{\n"
" if (true)\n"
" {\n"
" a();\n"
" }\n"
" else if (false)\n"
" {\n"
" b();\n"
" }\n"
" else\n"
" {\n"
" c();\n"
" }\n"
"}\n",
AllmanBraceStyle);
verifyFormat("void f()\n"
"{\n"
" for (int i = 0; i < 10; ++i)\n"
" {\n"
" a();\n"
" }\n"
" while (false)\n"
" {\n"
" b();\n"
" }\n"
" do\n"
" {\n"
" c();\n"
" } while (false)\n"
"}\n",
AllmanBraceStyle);
verifyFormat("void f(int a)\n"
"{\n"
" switch (a)\n"
" {\n"
" case 0:\n"
" break;\n"
" case 1:\n"
" {\n"
" break;\n"
" }\n"
" case 2:\n"
" {\n"
" }\n"
" break;\n"
" default:\n"
" break;\n"
" }\n"
"}\n",
AllmanBraceStyle);
verifyFormat("enum X\n"
"{\n"
" Y = 0,\n"
"}\n",
AllmanBraceStyle);
verifyFormat("enum X\n"
"{\n"
" Y = 0\n"
"}\n",
AllmanBraceStyle);
verifyFormat("@interface BSApplicationController ()\n"
"{\n"
"@private\n"
" id _extraIvar;\n"
"}\n"
"@end\n",
AllmanBraceStyle);
verifyFormat("#ifdef _DEBUG\n"
"int foo(int i = 0)\n"
"#else\n"
"int foo(int i = 5)\n"
"#endif\n"
"{\n"
" return i;\n"
"}",
AllmanBraceStyle);
verifyFormat("void foo() {}\n"
"void bar()\n"
"#ifdef _DEBUG\n"
"{\n"
" foo();\n"
"}\n"
"#else\n"
"{\n"
"}\n"
"#endif",
AllmanBraceStyle);
verifyFormat("void foobar() { int i = 5; }\n"
"#ifdef _DEBUG\n"
"void bar() {}\n"
"#else\n"
"void bar() { foobar(); }\n"
"#endif",
AllmanBraceStyle);
// This shouldn't affect ObjC blocks..
verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
" // ...\n"
" int i;\n"
"}];",
AllmanBraceStyle);
verifyFormat("void (^block)(void) = ^{\n"
" // ...\n"
" int i;\n"
"};",
AllmanBraceStyle);
// .. or dict literals.
verifyFormat("void f()\n"
"{\n"
" [object someMethod:@{ @\"a\" : @\"b\" }];\n"
"}",
AllmanBraceStyle);
verifyFormat("int f()\n"
"{ // comment\n"
" return 42;\n"
"}",
AllmanBraceStyle);
AllmanBraceStyle.ColumnLimit = 19;
verifyFormat("void f() { int i; }", AllmanBraceStyle);
AllmanBraceStyle.ColumnLimit = 18;
verifyFormat("void f()\n"
"{\n"
" int i;\n"
"}",
AllmanBraceStyle);
AllmanBraceStyle.ColumnLimit = 80;
FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle;
BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true;
BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
verifyFormat("void f(bool b)\n"
"{\n"
" if (b)\n"
" {\n"
" return;\n"
" }\n"
"}\n",
BreakBeforeBraceShortIfs);
verifyFormat("void f(bool b)\n"
"{\n"
" if (b) return;\n"
"}\n",
BreakBeforeBraceShortIfs);
verifyFormat("void f(bool b)\n"
"{\n"
" while (b)\n"
" {\n"
" return;\n"
" }\n"
"}\n",
BreakBeforeBraceShortIfs);
}
TEST_F(FormatTest, GNUBraceBreaking) {
FormatStyle GNUBraceStyle = getLLVMStyle();
GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU;
verifyFormat("namespace a\n"
"{\n"
"class A\n"
"{\n"
" void f()\n"
" {\n"
" int a;\n"
" {\n"
" int b;\n"
" }\n"
" if (true)\n"
" {\n"
" a();\n"
" b();\n"
" }\n"
" }\n"
" void g() { return; }\n"
"}\n"
"}",
GNUBraceStyle);
verifyFormat("void f()\n"
"{\n"
" if (true)\n"
" {\n"
" a();\n"
" }\n"
" else if (false)\n"
" {\n"
" b();\n"
" }\n"
" else\n"
" {\n"
" c();\n"
" }\n"
"}\n",
GNUBraceStyle);
verifyFormat("void f()\n"
"{\n"
" for (int i = 0; i < 10; ++i)\n"
" {\n"
" a();\n"
" }\n"
" while (false)\n"
" {\n"
" b();\n"
" }\n"
" do\n"
" {\n"
" c();\n"
" }\n"
" while (false);\n"
"}\n",
GNUBraceStyle);
verifyFormat("void f(int a)\n"
"{\n"
" switch (a)\n"
" {\n"
" case 0:\n"
" break;\n"
" case 1:\n"
" {\n"
" break;\n"
" }\n"
" case 2:\n"
" {\n"
" }\n"
" break;\n"
" default:\n"
" break;\n"
" }\n"
"}\n",
GNUBraceStyle);
verifyFormat("enum X\n"
"{\n"
" Y = 0,\n"
"}\n",
GNUBraceStyle);
verifyFormat("@interface BSApplicationController ()\n"
"{\n"
"@private\n"
" id _extraIvar;\n"
"}\n"
"@end\n",
GNUBraceStyle);
verifyFormat("#ifdef _DEBUG\n"
"int foo(int i = 0)\n"
"#else\n"
"int foo(int i = 5)\n"
"#endif\n"
"{\n"
" return i;\n"
"}",
GNUBraceStyle);
verifyFormat("void foo() {}\n"
"void bar()\n"
"#ifdef _DEBUG\n"
"{\n"
" foo();\n"
"}\n"
"#else\n"
"{\n"
"}\n"
"#endif",
GNUBraceStyle);
verifyFormat("void foobar() { int i = 5; }\n"
"#ifdef _DEBUG\n"
"void bar() {}\n"
"#else\n"
"void bar() { foobar(); }\n"
"#endif",
GNUBraceStyle);
}
TEST_F(FormatTest, CatchExceptionReferenceBinding) {
verifyFormat("void f() {\n"
" try {\n"
" } catch (const Exception &e) {\n"
" }\n"
"}\n",
getLLVMStyle());
}
TEST_F(FormatTest, UnderstandsPragmas) {
verifyFormat("#pragma omp reduction(| : var)");
verifyFormat("#pragma omp reduction(+ : var)");
EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string "
"(including parentheses).",
format("#pragma mark Any non-hyphenated or hyphenated string "
"(including parentheses)."));
}
#define EXPECT_ALL_STYLES_EQUAL(Styles) \
for (size_t i = 1; i < Styles.size(); ++i) \
EXPECT_EQ(Styles[0], Styles[i]) << "Style #" << i << " of " \
<< Styles.size() \
<< " differs from Style #0"
TEST_F(FormatTest, GetsPredefinedStyleByName) {
SmallVector<FormatStyle, 3> Styles;
Styles.resize(3);
Styles[0] = getLLVMStyle();
EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getGoogleStyle();
EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
EXPECT_TRUE(
getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1]));
EXPECT_TRUE(
getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp);
EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getMozillaStyle();
EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getWebKitStyle();
EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles[0] = getGNUStyle();
EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1]));
EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2]));
EXPECT_ALL_STYLES_EQUAL(Styles);
EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0]));
}
TEST_F(FormatTest, GetsCorrectBasedOnStyle) {
SmallVector<FormatStyle, 8> Styles;
Styles.resize(2);
Styles[0] = getGoogleStyle();
Styles[1] = getLLVMStyle();
EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
EXPECT_ALL_STYLES_EQUAL(Styles);
Styles.resize(5);
Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
Styles[1] = getLLVMStyle();
Styles[1].Language = FormatStyle::LK_JavaScript;
EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
Styles[2] = getLLVMStyle();
Styles[2].Language = FormatStyle::LK_JavaScript;
EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n"
"BasedOnStyle: Google",
&Styles[2]).value());
Styles[3] = getLLVMStyle();
Styles[3].Language = FormatStyle::LK_JavaScript;
EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n"
"Language: JavaScript",
&Styles[3]).value());
Styles[4] = getLLVMStyle();
Styles[4].Language = FormatStyle::LK_JavaScript;
EXPECT_EQ(0, parseConfiguration("---\n"
"BasedOnStyle: LLVM\n"
"IndentWidth: 123\n"
"---\n"
"BasedOnStyle: Google\n"
"Language: JavaScript",
&Styles[4]).value());
EXPECT_ALL_STYLES_EQUAL(Styles);
}
#define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME) \
Style.FIELD = false; \
EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value()); \
EXPECT_TRUE(Style.FIELD); \
EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value()); \
EXPECT_FALSE(Style.FIELD);
#define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD)
#define CHECK_PARSE(TEXT, FIELD, VALUE) \
EXPECT_NE(VALUE, Style.FIELD); \
EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value()); \
EXPECT_EQ(VALUE, Style.FIELD)
TEST_F(FormatTest, ParsesConfigurationBools) {
FormatStyle Style = {};
Style.Language = FormatStyle::LK_Cpp;
CHECK_PARSE_BOOL(AlignAfterOpenBracket);
CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft);
CHECK_PARSE_BOOL(AlignOperands);
CHECK_PARSE_BOOL(AlignTrailingComments);
CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine);
CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine);
CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
CHECK_PARSE_BOOL(AlwaysBreakAfterDefinitionReturnType);
CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations);
CHECK_PARSE_BOOL(BinPackParameters);
CHECK_PARSE_BOOL(BinPackArguments);
CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma);
CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
CHECK_PARSE_BOOL(DerivePointerAlignment);
CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
CHECK_PARSE_BOOL(IndentCaseLabels);
CHECK_PARSE_BOOL(IndentWrappedFunctionNames);
CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks);
CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
CHECK_PARSE_BOOL(Cpp11BracedListStyle);
CHECK_PARSE_BOOL(SpacesInParentheses);
CHECK_PARSE_BOOL(SpacesInSquareBrackets);
CHECK_PARSE_BOOL(SpacesInAngles);
CHECK_PARSE_BOOL(SpaceInEmptyParentheses);
CHECK_PARSE_BOOL(SpacesInContainerLiterals);
CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses);
CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators);
}
#undef CHECK_PARSE_BOOL
TEST_F(FormatTest, ParsesConfiguration) {
FormatStyle Style = {};
Style.Language = FormatStyle::LK_Cpp;
CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
CHECK_PARSE("ConstructorInitializerIndentWidth: 1234",
ConstructorInitializerIndentWidth, 1234u);
CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u);
CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234",
PenaltyBreakBeforeFirstCallParameter, 1234u);
CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
PenaltyReturnTypeOnItsOwnLine, 1234u);
CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
SpacesBeforeTrailingComments, 1234u);
CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u);
Style.PointerAlignment = FormatStyle::PAS_Middle;
CHECK_PARSE("PointerAlignment: Left", PointerAlignment,
FormatStyle::PAS_Left);
CHECK_PARSE("PointerAlignment: Right", PointerAlignment,
FormatStyle::PAS_Right);
CHECK_PARSE("PointerAlignment: Middle", PointerAlignment,
FormatStyle::PAS_Middle);
// For backward compatibility:
CHECK_PARSE("PointerBindsToType: Left", PointerAlignment,
FormatStyle::PAS_Left);
CHECK_PARSE("PointerBindsToType: Right", PointerAlignment,
FormatStyle::PAS_Right);
CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment,
FormatStyle::PAS_Middle);
Style.Standard = FormatStyle::LS_Auto;
CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03);
CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Cpp11);
CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment",
BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment);
CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators,
FormatStyle::BOS_None);
CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators,
FormatStyle::BOS_All);
// For backward compatibility:
CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators,
FormatStyle::BOS_None);
CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators,
FormatStyle::BOS_All);
Style.UseTab = FormatStyle::UT_ForIndentation;
CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never);
CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation);
CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always);
// For backward compatibility:
CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never);
CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always);
Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
CHECK_PARSE("AllowShortFunctionsOnASingleLine: None",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline);
CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty);
CHECK_PARSE("AllowShortFunctionsOnASingleLine: All",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
// For backward compatibility:
CHECK_PARSE("AllowShortFunctionsOnASingleLine: false",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
CHECK_PARSE("AllowShortFunctionsOnASingleLine: true",
AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens,
FormatStyle::SBPO_Never);
CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens,
FormatStyle::SBPO_Always);
CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens,
FormatStyle::SBPO_ControlStatements);
// For backward compatibility:
CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens,
FormatStyle::SBPO_Never);
CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens,
FormatStyle::SBPO_ControlStatements);
Style.ColumnLimit = 123;
FormatStyle BaseStyle = getLLVMStyle();
CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
FormatStyle::BS_Attach);
CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
FormatStyle::BS_Linux);
CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
FormatStyle::BS_Stroustrup);
CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces,
FormatStyle::BS_Allman);
CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU);
Style.NamespaceIndentation = FormatStyle::NI_All;
CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation,
FormatStyle::NI_None);
CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation,
FormatStyle::NI_Inner);
CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
FormatStyle::NI_All);
Style.ForEachMacros.clear();
std::vector<std::string> BoostForeach;
BoostForeach.push_back("BOOST_FOREACH");
CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach);
std::vector<std::string> BoostAndQForeach;
BoostAndQForeach.push_back("BOOST_FOREACH");
BoostAndQForeach.push_back("Q_FOREACH");
CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros,
BoostAndQForeach);
}
TEST_F(FormatTest, ParsesConfigurationWithLanguages) {
FormatStyle Style = {};
Style.Language = FormatStyle::LK_Cpp;
CHECK_PARSE("Language: Cpp\n"
"IndentWidth: 12",
IndentWidth, 12u);
EXPECT_EQ(parseConfiguration("Language: JavaScript\n"
"IndentWidth: 34",
&Style),
ParseError::Unsuitable);
EXPECT_EQ(12u, Style.IndentWidth);
CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
Style.Language = FormatStyle::LK_JavaScript;
CHECK_PARSE("Language: JavaScript\n"
"IndentWidth: 12",
IndentWidth, 12u);
CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u);
EXPECT_EQ(parseConfiguration("Language: Cpp\n"
"IndentWidth: 34",
&Style),
ParseError::Unsuitable);
EXPECT_EQ(23u, Style.IndentWidth);
CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
CHECK_PARSE("BasedOnStyle: LLVM\n"
"IndentWidth: 67",
IndentWidth, 67u);
CHECK_PARSE("---\n"
"Language: JavaScript\n"
"IndentWidth: 12\n"
"---\n"
"Language: Cpp\n"
"IndentWidth: 34\n"
"...\n",
IndentWidth, 12u);
Style.Language = FormatStyle::LK_Cpp;
CHECK_PARSE("---\n"
"Language: JavaScript\n"
"IndentWidth: 12\n"
"---\n"
"Language: Cpp\n"
"IndentWidth: 34\n"
"...\n",
IndentWidth, 34u);
CHECK_PARSE("---\n"
"IndentWidth: 78\n"
"---\n"
"Language: JavaScript\n"
"IndentWidth: 56\n"
"...\n",
IndentWidth, 78u);
Style.ColumnLimit = 123;
Style.IndentWidth = 234;
Style.BreakBeforeBraces = FormatStyle::BS_Linux;
Style.TabWidth = 345;
EXPECT_FALSE(parseConfiguration("---\n"
"IndentWidth: 456\n"
"BreakBeforeBraces: Allman\n"
"---\n"
"Language: JavaScript\n"
"IndentWidth: 111\n"
"TabWidth: 111\n"
"---\n"
"Language: Cpp\n"
"BreakBeforeBraces: Stroustrup\n"
"TabWidth: 789\n"
"...\n",
&Style));
EXPECT_EQ(123u, Style.ColumnLimit);
EXPECT_EQ(456u, Style.IndentWidth);
EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces);
EXPECT_EQ(789u, Style.TabWidth);
EXPECT_EQ(parseConfiguration("---\n"
"Language: JavaScript\n"
"IndentWidth: 56\n"
"---\n"
"IndentWidth: 78\n"
"...\n",
&Style),
ParseError::Error);
EXPECT_EQ(parseConfiguration("---\n"
"Language: JavaScript\n"
"IndentWidth: 56\n"
"---\n"
"Language: JavaScript\n"
"IndentWidth: 78\n"
"...\n",
&Style),
ParseError::Error);
EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
}
#undef CHECK_PARSE
TEST_F(FormatTest, UsesLanguageForBasedOnStyle) {
FormatStyle Style = {};
Style.Language = FormatStyle::LK_JavaScript;
Style.BreakBeforeTernaryOperators = true;
EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value());
EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
Style.BreakBeforeTernaryOperators = true;
EXPECT_EQ(0, parseConfiguration("---\n"
"BasedOnStyle: Google\n"
"---\n"
"Language: JavaScript\n"
"IndentWidth: 76\n"
"...\n", &Style).value());
EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
EXPECT_EQ(76u, Style.IndentWidth);
EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
}
TEST_F(FormatTest, ConfigurationRoundTripTest) {
FormatStyle Style = getLLVMStyle();
std::string YAML = configurationAsText(Style);
FormatStyle ParsedStyle = {};
ParsedStyle.Language = FormatStyle::LK_Cpp;
EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
EXPECT_EQ(Style, ParsedStyle);
}
TEST_F(FormatTest, WorksFor8bitEncodings) {
EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n"
"\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n"
"\"\xe7\xe8\xec\xed\xfe\xfe \"\n"
"\"\xef\xee\xf0\xf3...\"",
format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 "
"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe "
"\xef\xee\xf0\xf3...\"",
getLLVMStyleWithColumns(12)));
}
TEST_F(FormatTest, HandlesUTF8BOM) {
EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf"));
EXPECT_EQ("\xef\xbb\xbf#include <iostream>",
format("\xef\xbb\xbf#include <iostream>"));
EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>",
format("\xef\xbb\xbf\n#include <iostream>"));
}
// FIXME: Encode Cyrillic and CJK characters below to appease MS compilers.
#if !defined(_MSC_VER)
TEST_F(FormatTest, CountsUTF8CharactersProperly) {
verifyFormat("\"Однажды в студёную зимнюю пору...\"",
getLLVMStyleWithColumns(35));
verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"",
getLLVMStyleWithColumns(31));
verifyFormat("// Однажды в студёную зимнюю пору...",
getLLVMStyleWithColumns(36));
verifyFormat("// 一 二 三 四 五 六 七 八 九 十",
getLLVMStyleWithColumns(32));
verifyFormat("/* Однажды в студёную зимнюю пору... */",
getLLVMStyleWithColumns(39));
verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */",
getLLVMStyleWithColumns(35));
}
TEST_F(FormatTest, SplitsUTF8Strings) {
// Non-printable characters' width is currently considered to be the length in
// bytes in UTF8. The characters can be displayed in very different manner
// (zero-width, single width with a substitution glyph, expanded to their code
// (e.g. "<8d>"), so there's no single correct way to handle them.
EXPECT_EQ("\"aaaaÄ\"\n"
"\"\xc2\x8d\";",
format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
EXPECT_EQ("\"aaaaaaaÄ\"\n"
"\"\xc2\x8d\";",
format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
EXPECT_EQ(
"\"Однажды, в \"\n"
"\"студёную \"\n"
"\"зимнюю \"\n"
"\"пору,\"",
format("\"Однажды, в студёную зимнюю пору,\"",
getLLVMStyleWithColumns(13)));
EXPECT_EQ("\"一 二 三 \"\n"
"\"四 五六 \"\n"
"\"七 八 九 \"\n"
"\"十\"",
format("\"一 二 三 四 五六 七 八 九 十\"",
getLLVMStyleWithColumns(11)));
EXPECT_EQ("\"一\t二 \"\n"
"\"\t三 \"\n"
"\"四 五\t六 \"\n"
"\"\t七 \"\n"
"\"八九十\tqq\"",
format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"",
getLLVMStyleWithColumns(11)));
}
TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) {
EXPECT_EQ("const char *sssss =\n"
" \"一二三四五六七八\\\n"
" 九 十\";",
format("const char *sssss = \"一二三四五六七八\\\n"
" 九 十\";",
getLLVMStyleWithColumns(30)));
}
TEST_F(FormatTest, SplitsUTF8LineComments) {
EXPECT_EQ("// aaaaÄ\xc2\x8d",
format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10)));
EXPECT_EQ("// Я из лесу\n"
"// вышел; был\n"
"// сильный\n"
"// мороз.",
format("// Я из лесу вышел; был сильный мороз.",
getLLVMStyleWithColumns(13)));
EXPECT_EQ("// 一二三\n"
"// 四五六七\n"
"// 八 九\n"
"// 十",
format("// 一二三 四五六七 八 九 十", getLLVMStyleWithColumns(9)));
}
TEST_F(FormatTest, SplitsUTF8BlockComments) {
EXPECT_EQ("/* Гляжу,\n"
" * поднимается\n"
" * медленно в\n"
" * гору\n"
" * Лошадка,\n"
" * везущая\n"
" * хворосту\n"
" * воз. */",
format("/* Гляжу, поднимается медленно в гору\n"
" * Лошадка, везущая хворосту воз. */",
getLLVMStyleWithColumns(13)));
EXPECT_EQ(
"/* 一二三\n"
" * 四五六七\n"
" * 八 九\n"
" * 十 */",
format("/* 一二三 四五六七 八 九 十 */", getLLVMStyleWithColumns(9)));
EXPECT_EQ("/* 𝓣𝓮𝓼𝓽 𝔣𝔬𝔲𝔯\n"
" * 𝕓𝕪𝕥𝕖\n"
" * 𝖀𝕿𝕱-𝟠 */",
format("/* 𝓣𝓮𝓼𝓽 𝔣𝔬𝔲𝔯 𝕓𝕪𝕥𝕖 𝖀𝕿𝕱-𝟠 */", getLLVMStyleWithColumns(12)));
}
#endif // _MSC_VER
TEST_F(FormatTest, ConstructorInitializerIndentWidth) {
FormatStyle Style = getLLVMStyle();
Style.ConstructorInitializerIndentWidth = 4;
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
Style);
Style.ConstructorInitializerIndentWidth = 2;
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
Style);
Style.ConstructorInitializerIndentWidth = 0;
verifyFormat(
"SomeClass::Constructor()\n"
": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
" aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
Style);
}
TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) {
FormatStyle Style = getLLVMStyle();
Style.BreakConstructorInitializersBeforeComma = true;
Style.ConstructorInitializerIndentWidth = 4;
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
" , b(b)\n"
" , c(c) {}",
Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a) {}",
Style);
Style.ColumnLimit = 0;
verifyFormat("SomeClass::Constructor()\n"
" : a(a) {}",
Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
" , b(b)\n"
" , c(c) {}",
Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a) {\n"
" foo();\n"
" bar();\n"
"}",
Style);
Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
" , b(b)\n"
" , c(c) {\n}",
Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a) {\n}",
Style);
Style.ColumnLimit = 80;
Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
Style.ConstructorInitializerIndentWidth = 2;
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
" , b(b)\n"
" , c(c) {}",
Style);
Style.ConstructorInitializerIndentWidth = 0;
verifyFormat("SomeClass::Constructor()\n"
": a(a)\n"
", b(b)\n"
", c(c) {}",
Style);
Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
Style.ConstructorInitializerIndentWidth = 4;
verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style);
verifyFormat(
"SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n",
Style);
verifyFormat(
"SomeClass::Constructor()\n"
" : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}",
Style);
Style.ConstructorInitializerIndentWidth = 4;
Style.ColumnLimit = 60;
verifyFormat("SomeClass::Constructor()\n"
" : aaaaaaaa(aaaaaaaa)\n"
" , aaaaaaaa(aaaaaaaa)\n"
" , aaaaaaaa(aaaaaaaa) {}",
Style);
}
TEST_F(FormatTest, Destructors) {
verifyFormat("void F(int &i) { i.~int(); }");
verifyFormat("void F(int &i) { i->~int(); }");
}
TEST_F(FormatTest, FormatsWithWebKitStyle) {
FormatStyle Style = getWebKitStyle();
// Don't indent in outer namespaces.
verifyFormat("namespace outer {\n"
"int i;\n"
"namespace inner {\n"
" int i;\n"
"} // namespace inner\n"
"} // namespace outer\n"
"namespace other_outer {\n"
"int i;\n"
"}",
Style);
// Don't indent case labels.
verifyFormat("switch (variable) {\n"
"case 1:\n"
"case 2:\n"
" doSomething();\n"
" break;\n"
"default:\n"
" ++variable;\n"
"}",
Style);
// Wrap before binary operators.
EXPECT_EQ(
"void f()\n"
"{\n"
" if (aaaaaaaaaaaaaaaa\n"
" && bbbbbbbbbbbbbbbbbbbbbbbb\n"
" && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
" return;\n"
"}",
format(
"void f() {\n"
"if (aaaaaaaaaaaaaaaa\n"
"&& bbbbbbbbbbbbbbbbbbbbbbbb\n"
"&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
"return;\n"
"}",
Style));
// Allow functions on a single line.
verifyFormat("void f() { return; }", Style);
// Constructor initializers are formatted one per line with the "," on the
// new line.
verifyFormat("Constructor()\n"
" : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
" , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n"
" aaaaaaaaaaaaaa)\n"
" , aaaaaaaaaaaaaaaaaaaaaaa()\n"
"{\n"
"}",
Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
"{\n"
"}",
Style);
EXPECT_EQ("SomeClass::Constructor()\n"
" : a(a)\n"
"{\n"
"}",
format("SomeClass::Constructor():a(a){}", Style));
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
" , b(b)\n"
" , c(c)\n"
"{\n"
"}", Style);
verifyFormat("SomeClass::Constructor()\n"
" : a(a)\n"
"{\n"
" foo();\n"
" bar();\n"
"}",
Style);
// Access specifiers should be aligned left.
verifyFormat("class C {\n"
"public:\n"
" int i;\n"
"};",
Style);
// Do not align comments.
verifyFormat("int a; // Do not\n"
"double b; // align comments.",
Style);
// Do not align operands.
EXPECT_EQ("ASSERT(aaaa\n"
" || bbbb);",
format("ASSERT ( aaaa\n||bbbb);", Style));
// Accept input's line breaks.
EXPECT_EQ("if (aaaaaaaaaaaaaaa\n"
" || bbbbbbbbbbbbbbb) {\n"
" i++;\n"
"}",
format("if (aaaaaaaaaaaaaaa\n"
"|| bbbbbbbbbbbbbbb) { i++; }",
Style));
EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n"
" i++;\n"
"}",
format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style));
// Don't automatically break all macro definitions (llvm.org/PR17842).
verifyFormat("#define aNumber 10", Style);
// However, generally keep the line breaks that the user authored.
EXPECT_EQ("#define aNumber \\\n"
" 10",
format("#define aNumber \\\n"
" 10",
Style));
// Keep empty and one-element array literals on a single line.
EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n"
" copyItems:YES];",
format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n"
"copyItems:YES];",
Style));
EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n"
" copyItems:YES];",
format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n"
" copyItems:YES];",
Style));
// FIXME: This does not seem right, there should be more indentation before
// the array literal's entries. Nested blocks have the same problem.
EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
" @\"a\",\n"
" @\"a\"\n"
"]\n"
" copyItems:YES];",
format("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
" @\"a\",\n"
" @\"a\"\n"
" ]\n"
" copyItems:YES];",
Style));
EXPECT_EQ(
"NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
" copyItems:YES];",
format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
" copyItems:YES];",
Style));
verifyFormat("[self.a b:c c:d];", Style);
EXPECT_EQ("[self.a b:c\n"
" c:d];",
format("[self.a b:c\n"
"c:d];",
Style));
}
TEST_F(FormatTest, FormatsLambdas) {
verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n");
verifyFormat("int c = [&] { [=] { return b++; }(); }();\n");
verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n");
verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n");
verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n");
verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n");
verifyFormat("void f() {\n"
" other(x.begin(), x.end(), [&](int, int) { return 1; });\n"
"}\n");
verifyFormat("void f() {\n"
" other(x.begin(), //\n"
" x.end(), //\n"
" [&](int, int) { return 1; });\n"
"}\n");
verifyFormat("SomeFunction([]() { // A cool function...\n"
" return 43;\n"
"});");
EXPECT_EQ("SomeFunction([]() {\n"
"#define A a\n"
" return 43;\n"
"});",
format("SomeFunction([](){\n"
"#define A a\n"
"return 43;\n"
"});"));
verifyFormat("void f() {\n"
" SomeFunction([](decltype(x), A *a) {});\n"
"}");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
" [](const aaaaaaaaaa &a) { return a; });");
verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n"
" SomeOtherFunctioooooooooooooooooooooooooon();\n"
"});");
verifyFormat("Constructor()\n"
" : Field([] { // comment\n"
" int i;\n"
" }) {}");
// Lambdas with return types.
verifyFormat("int c = []() -> int { return 2; }();\n");
verifyFormat("int c = []() -> vector<int> { return {2}; }();\n");
verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());");
verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};");
verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};");
verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};");
verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};");
verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n"
" int j) -> int {\n"
" return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n"
"};");
verifyFormat(
"aaaaaaaaaaaaaaaaaaaaaa(\n"
" [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n"
" return aaaaaaaaaaaaaaaaa;\n"
" });",
getLLVMStyleWithColumns(70));
// Multiple lambdas in the same parentheses change indentation rules.
verifyFormat("SomeFunction(\n"
" []() {\n"
" int i = 42;\n"
" return i;\n"
" },\n"
" []() {\n"
" int j = 43;\n"
" return j;\n"
" });");
// More complex introducers.
verifyFormat("return [i, args...] {};");
// Not lambdas.
verifyFormat("constexpr char hello[]{\"hello\"};");
verifyFormat("double &operator[](int i) { return 0; }\n"
"int i;");
verifyFormat("std::unique_ptr<int[]> foo() {}");
verifyFormat("int i = a[a][a]->f();");
verifyFormat("int i = (*b)[a]->f();");
// Other corner cases.
verifyFormat("void f() {\n"
" bar([]() {} // Did not respect SpacesBeforeTrailingComments\n"
" );\n"
"}");
// Lambdas created through weird macros.
verifyFormat("void f() {\n"
" MACRO((const AA &a) { return 1; });\n"
"}");
verifyFormat("if (blah_blah(whatever, whatever, [] {\n"
" doo_dah();\n"
" doo_dah();\n"
" })) {\n"
"}");
verifyFormat("auto lambda = []() {\n"
" int a = 2\n"
"#if A\n"
" + 2\n"
"#endif\n"
" ;\n"
"};");
}
TEST_F(FormatTest, FormatsBlocks) {
FormatStyle ShortBlocks = getLLVMStyle();
ShortBlocks.AllowShortBlocksOnASingleLine = true;
verifyFormat("int (^Block)(int, int);", ShortBlocks);
verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks);
verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks);
verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks);
verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks);
verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks);
verifyFormat("foo(^{ bar(); });", ShortBlocks);
verifyFormat("foo(a, ^{ bar(); });", ShortBlocks);
verifyFormat("{ void (^block)(Object *x); }", ShortBlocks);
verifyFormat("[operation setCompletionBlock:^{\n"
" [self onOperationDone];\n"
"}];");
verifyFormat("int i = {[operation setCompletionBlock:^{\n"
" [self onOperationDone];\n"
"}]};");
verifyFormat("[operation setCompletionBlock:^(int *i) {\n"
" f();\n"
"}];");
verifyFormat("int a = [operation block:^int(int *i) {\n"
" return 1;\n"
"}];");
verifyFormat("[myObject doSomethingWith:arg1\n"
" aaa:^int(int *a) {\n"
" return 1;\n"
" }\n"
" bbb:f(a * bbbbbbbb)];");
verifyFormat("[operation setCompletionBlock:^{\n"
" [self.delegate newDataAvailable];\n"
"}];",
getLLVMStyleWithColumns(60));
verifyFormat("dispatch_async(_fileIOQueue, ^{\n"
" NSString *path = [self sessionFilePath];\n"
" if (path) {\n"
" // ...\n"
" }\n"
"});");
verifyFormat("[[SessionService sharedService]\n"
" loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
" if (window) {\n"
" [self windowDidLoad:window];\n"
" } else {\n"
" [self errorLoadingWindow];\n"
" }\n"
" }];");
verifyFormat("void (^largeBlock)(void) = ^{\n"
" // ...\n"
"};\n",
getLLVMStyleWithColumns(40));
verifyFormat("[[SessionService sharedService]\n"
" loadWindowWithCompletionBlock: //\n"
" ^(SessionWindow *window) {\n"
" if (window) {\n"
" [self windowDidLoad:window];\n"
" } else {\n"
" [self errorLoadingWindow];\n"
" }\n"
" }];",
getLLVMStyleWithColumns(60));
verifyFormat("[myObject doSomethingWith:arg1\n"
" firstBlock:^(Foo *a) {\n"
" // ...\n"
" int i;\n"
" }\n"
" secondBlock:^(Bar *b) {\n"
" // ...\n"
" int i;\n"
" }\n"
" thirdBlock:^Foo(Bar *b) {\n"
" // ...\n"
" int i;\n"
" }];");
verifyFormat("[myObject doSomethingWith:arg1\n"
" firstBlock:-1\n"
" secondBlock:^(Bar *b) {\n"
" // ...\n"
" int i;\n"
" }];");
verifyFormat("f(^{\n"
" @autoreleasepool {\n"
" if (a) {\n"
" g();\n"
" }\n"
" }\n"
"});");
verifyFormat("Block b = ^int *(A *a, B *b) {}");
FormatStyle FourIndent = getLLVMStyle();
FourIndent.ObjCBlockIndentWidth = 4;
verifyFormat("[operation setCompletionBlock:^{\n"
" [self onOperationDone];\n"
"}];",
FourIndent);
}
TEST_F(FormatTest, SupportsCRLF) {
EXPECT_EQ("int a;\r\n"
"int b;\r\n"
"int c;\r\n",
format("int a;\r\n"
" int b;\r\n"
" int c;\r\n",
getLLVMStyle()));
EXPECT_EQ("int a;\r\n"
"int b;\r\n"
"int c;\r\n",
format("int a;\r\n"
" int b;\n"
" int c;\r\n",
getLLVMStyle()));
EXPECT_EQ("int a;\n"
"int b;\n"
"int c;\n",
format("int a;\r\n"
" int b;\n"
" int c;\n",
getLLVMStyle()));
EXPECT_EQ("\"aaaaaaa \"\r\n"
"\"bbbbbbb\";\r\n",
format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10)));
EXPECT_EQ("#define A \\\r\n"
" b; \\\r\n"
" c; \\\r\n"
" d;\r\n",
format("#define A \\\r\n"
" b; \\\r\n"
" c; d; \r\n",
getGoogleStyle()));
EXPECT_EQ("/*\r\n"
"multi line block comments\r\n"
"should not introduce\r\n"
"an extra carriage return\r\n"
"*/\r\n",
format("/*\r\n"
"multi line block comments\r\n"
"should not introduce\r\n"
"an extra carriage return\r\n"
"*/\r\n"));
}
TEST_F(FormatTest, MunchSemicolonAfterBlocks) {
verifyFormat("MY_CLASS(C) {\n"
" int i;\n"
" int j;\n"
"};");
}
TEST_F(FormatTest, ConfigurableContinuationIndentWidth) {
FormatStyle TwoIndent = getLLVMStyleWithColumns(15);
TwoIndent.ContinuationIndentWidth = 2;
EXPECT_EQ("int i =\n"
" longFunction(\n"
" arg);",
format("int i = longFunction(arg);", TwoIndent));
FormatStyle SixIndent = getLLVMStyleWithColumns(20);
SixIndent.ContinuationIndentWidth = 6;
EXPECT_EQ("int i =\n"
" longFunction(\n"
" arg);",
format("int i = longFunction(arg);", SixIndent));
}
TEST_F(FormatTest, SpacesInAngles) {
FormatStyle Spaces = getLLVMStyle();
Spaces.SpacesInAngles = true;
verifyFormat("static_cast< int >(arg);", Spaces);
verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces);
verifyFormat("f< int, float >();", Spaces);
verifyFormat("template <> g() {}", Spaces);
verifyFormat("template < std::vector< int > > f() {}", Spaces);
Spaces.Standard = FormatStyle::LS_Cpp03;
Spaces.SpacesInAngles = true;
verifyFormat("A< A< int > >();", Spaces);
Spaces.SpacesInAngles = false;
verifyFormat("A<A<int> >();", Spaces);
Spaces.Standard = FormatStyle::LS_Cpp11;
Spaces.SpacesInAngles = true;
verifyFormat("A< A< int > >();", Spaces);
Spaces.SpacesInAngles = false;
verifyFormat("A<A<int>>();", Spaces);
}
TEST_F(FormatTest, TripleAngleBrackets) {
verifyFormat("f<<<1, 1>>>();");
verifyFormat("f<<<1, 1, 1, s>>>();");
verifyFormat("f<<<a, b, c, d>>>();");
EXPECT_EQ("f<<<1, 1>>>();",
format("f <<< 1, 1 >>> ();"));
verifyFormat("f<param><<<1, 1>>>();");
verifyFormat("f<1><<<1, 1>>>();");
EXPECT_EQ("f<param><<<1, 1>>>();",
format("f< param > <<< 1, 1 >>> ();"));
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaa<<<\n 1, 1>>>();");
}
TEST_F(FormatTest, MergeLessLessAtEnd) {
verifyFormat("<<");
EXPECT_EQ("< < <", format("\\\n<<<"));
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaallvm::outs() <<");
verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaallvm::outs()\n <<");
}
TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) {
std::string code = "#if A\n"
"#if B\n"
"a.\n"
"#endif\n"
" a = 1;\n"
"#else\n"
"#endif\n"
"#if C\n"
"#else\n"
"#endif\n";
EXPECT_EQ(code, format(code));
}
TEST_F(FormatTest, HandleConflictMarkers) {
// Git/SVN conflict markers.
EXPECT_EQ("int a;\n"
"void f() {\n"
" callme(some(parameter1,\n"
"<<<<<<< text by the vcs\n"
" parameter2),\n"
"||||||| text by the vcs\n"
" parameter2),\n"
" parameter3,\n"
"======= text by the vcs\n"
" parameter2, parameter3),\n"
">>>>>>> text by the vcs\n"
" otherparameter);\n",
format("int a;\n"
"void f() {\n"
" callme(some(parameter1,\n"
"<<<<<<< text by the vcs\n"
" parameter2),\n"
"||||||| text by the vcs\n"
" parameter2),\n"
" parameter3,\n"
"======= text by the vcs\n"
" parameter2,\n"
" parameter3),\n"
">>>>>>> text by the vcs\n"
" otherparameter);\n"));
// Perforce markers.
EXPECT_EQ("void f() {\n"
" function(\n"
">>>> text by the vcs\n"
" parameter,\n"
"==== text by the vcs\n"
" parameter,\n"
"==== text by the vcs\n"
" parameter,\n"
"<<<< text by the vcs\n"
" parameter);\n",
format("void f() {\n"
" function(\n"
">>>> text by the vcs\n"
" parameter,\n"
"==== text by the vcs\n"
" parameter,\n"
"==== text by the vcs\n"
" parameter,\n"
"<<<< text by the vcs\n"
" parameter);\n"));
EXPECT_EQ("<<<<<<<\n"
"|||||||\n"
"=======\n"
">>>>>>>",
format("<<<<<<<\n"
"|||||||\n"
"=======\n"
">>>>>>>"));
EXPECT_EQ("<<<<<<<\n"
"|||||||\n"
"int i;\n"
"=======\n"
">>>>>>>",
format("<<<<<<<\n"
"|||||||\n"
"int i;\n"
"=======\n"
">>>>>>>"));
// FIXME: Handle parsing of macros around conflict markers correctly:
EXPECT_EQ("#define Macro \\\n"
"<<<<<<<\n"
"Something \\\n"
"|||||||\n"
"Else \\\n"
"=======\n"
"Other \\\n"
">>>>>>>\n"
" End int i;\n",
format("#define Macro \\\n"
"<<<<<<<\n"
" Something \\\n"
"|||||||\n"
" Else \\\n"
"=======\n"
" Other \\\n"
">>>>>>>\n"
" End\n"
"int i;\n"));
}
TEST_F(FormatTest, DisableRegions) {
EXPECT_EQ("int i;\n"
"// clang-format off\n"
" int j;\n"
"// clang-format on\n"
"int k;",
format(" int i;\n"
" // clang-format off\n"
" int j;\n"
" // clang-format on\n"
" int k;"));
EXPECT_EQ("int i;\n"
"/* clang-format off */\n"
" int j;\n"
"/* clang-format on */\n"
"int k;",
format(" int i;\n"
" /* clang-format off */\n"
" int j;\n"
" /* clang-format on */\n"
" int k;"));
}
TEST_F(FormatTest, DoNotCrashOnInvalidInput) {
format("? ) =");
}
} // end namespace tooling
} // end namespace clang