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<h1>AST Matcher Reference</h1>
<p>This document shows all currently implemented matchers. The matchers are grouped
by category and node type they match. You can click on matcher names to show the
matcher's source documentation.</p>
<p>There are three different basic categories of matchers:
<ul>
<li><a href="#decl-matchers">Node Matchers:</a> Matchers that match a specific type of AST node.</li>
<li><a href="#narrowing-matchers">Narrowing Matchers:</a> Matchers that match attributes on AST nodes.</li>
<li><a href="#traversal-matchers">Traversal Matchers:</a> Matchers that allow traversal between AST nodes.</li>
</ul>
</p>
<p>Within each category the matchers are ordered by node type they match on.
Note that if a matcher can match multiple node types, it will it will appear
multiple times. This means that by searching for Matcher<Stmt> you can
find all matchers that can be used to match on Stmt nodes.</p>
<p>The exception to that rule are matchers that can match on any node. Those
are marked with a * and are listed in the beginning of each category.</p>
<!-- ======================================================================= -->
<h2 id="decl-matchers">Node Matchers</h2>
<!-- ======================================================================= -->
<p>Node matchers are at the core of matcher expressions - they specify the type
of node that is expected. Every match expression starts with a node matcher,
which can then be further refined with a narrowing or traversal matcher. All
traversal matchers take node matchers as their arguments.</p>
<p>For convenience, all node matchers take an arbitrary number of arguments
and implicitly act as allOf matchers.</p>
<p>Node matchers are the only matchers that support the bind("id") call to
bind the matched node to the given string, to be later retrieved from the
match callback.</p>
<table>
<tr style="text-align:left"><th>Return type</th><th>Name</th><th>Parameters</th></tr>
<!-- START_DECL_MATCHERS -->
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('classTemplateDecl0')"><a name="classTemplateDecl0Anchor">classTemplateDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateDecl.html">ClassTemplateDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="classTemplateDecl0"><pre>Matches C++ class template declarations.
Example matches Z
template<class T> class Z {};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('classTemplateSpecializationDecl0')"><a name="classTemplateSpecializationDecl0Anchor">classTemplateSpecializationDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateSpecializationDecl.html">ClassTemplateSpecializationDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="classTemplateSpecializationDecl0"><pre>Matches C++ class template specializations.
Given
template<typename T> class A {};
template<> class A<double> {};
A<int> a;
classTemplateSpecializationDecl()
matches the specializations A<int> and A<double>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('constructorDecl0')"><a name="constructorDecl0Anchor">constructorDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructorDecl.html">CXXConstructorDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constructorDecl0"><pre>Matches C++ constructor declarations.
Example matches Foo::Foo() and Foo::Foo(int)
class Foo {
public:
Foo();
Foo(int);
int DoSomething();
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('decl0')"><a name="decl0Anchor">decl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="decl0"><pre>Matches declarations.
Examples matches X, C, and the friend declaration inside C;
void X();
class C {
friend X;
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('destructorDecl0')"><a name="destructorDecl0Anchor">destructorDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDestructorDecl.html">CXXDestructorDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="destructorDecl0"><pre>Matches explicit C++ destructor declarations.
Example matches Foo::~Foo()
class Foo {
public:
virtual ~Foo();
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('enumConstantDecl0')"><a name="enumConstantDecl0Anchor">enumConstantDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1EnumConstantDecl.html">EnumConstantDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="enumConstantDecl0"><pre>Matches enum constants.
Example matches A, B, C
enum X {
A, B, C
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('enumDecl0')"><a name="enumDecl0Anchor">enumDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1EnumDecl.html">EnumDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="enumDecl0"><pre>Matches enum declarations.
Example matches X
enum X {
A, B, C
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('fieldDecl0')"><a name="fieldDecl0Anchor">fieldDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FieldDecl.html">FieldDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="fieldDecl0"><pre>Matches field declarations.
Given
class X { int m; };
fieldDecl()
matches 'm'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('functionDecl0')"><a name="functionDecl0Anchor">functionDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionDecl0"><pre>Matches function declarations.
Example matches f
void f();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('functionTemplateDecl0')"><a name="functionTemplateDecl0Anchor">functionTemplateDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionTemplateDecl.html">FunctionTemplateDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionTemplateDecl0"><pre>Matches C++ function template declarations.
Example matches f
template<class T> void f(T t) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('methodDecl0')"><a name="methodDecl0Anchor">methodDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMethodDecl.html">CXXMethodDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="methodDecl0"><pre>Matches method declarations.
Example matches y
class X { void y() };
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('namedDecl0')"><a name="namedDecl0Anchor">namedDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="namedDecl0"><pre>Matches a declaration of anything that could have a name.
Example matches X, S, the anonymous union type, i, and U;
typedef int X;
struct S {
union {
int i;
} U;
};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('recordDecl0')"><a name="recordDecl0Anchor">recordDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="recordDecl0"><pre>Matches C++ class declarations.
Example matches X, Z
class X;
template<class T> class Z {};
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('usingDecl0')"><a name="usingDecl0Anchor">usingDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingDecl.html">UsingDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="usingDecl0"><pre>Matches using declarations.
Given
namespace X { int x; }
using X::x;
usingDecl()
matches using X::x </pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>></td><td class="name" onclick="toggle('varDecl0')"><a name="varDecl0Anchor">varDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="varDecl0"><pre>Matches variable declarations.
Note: this does not match declarations of member variables, which are
"field" declarations in Clang parlance.
Example matches a
int a;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('boolLiteral0')"><a name="boolLiteral0Anchor">boolLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXBoolLiteralExpr.html">CXXBoolLiteralExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="boolLiteral0"><pre>Matches bool literals.
Example matches true
true
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('castExpr0')"><a name="castExpr0Anchor">castExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CastExpr.html">CastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="castExpr0"><pre>Matches any cast nodes of Clang's AST.
Example: castExpr() matches each of the following:
(int) 3;
const_cast<Expr *>(SubExpr);
char c = 0;
but does not match
int i = (0);
int k = 0;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('characterLiteral0')"><a name="characterLiteral0Anchor">characterLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="characterLiteral0"><pre>Matches character literals (also matches wchar_t).
Not matching Hex-encoded chars (e.g. 0x1234, which is a IntegerLiteral),
though.
Example matches 'a', L'a'
char ch = 'a'; wchar_t chw = L'a';
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('constCastExpr0')"><a name="constCastExpr0Anchor">constCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstCastExpr.html">CXXConstCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constCastExpr0"><pre>Matches a const_cast expression.
Example: Matches const_cast<int*>(&r) in
int n = 42;
const int &r(n);
int* p = const_cast<int*>(&r);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('dynamicCastExpr0')"><a name="dynamicCastExpr0Anchor">dynamicCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDynamicCastExpr.html">CXXDynamicCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="dynamicCastExpr0"><pre>Matches a dynamic_cast expression.
Example:
dynamicCastExpr()
matches
dynamic_cast<D*>(&b);
in
struct B { virtual ~B() {} }; struct D : B {};
B b;
D* p = dynamic_cast<D*>(&b);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('explicitCastExpr0')"><a name="explicitCastExpr0Anchor">explicitCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ExplicitCastExpr.html">ExplicitCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="explicitCastExpr0"><pre>Matches explicit cast expressions.
Matches any cast expression written in user code, whether it be a
C-style cast, a functional-style cast, or a keyword cast.
Does not match implicit conversions.
Note: the name "explicitCast" is chosen to match Clang's terminology, as
Clang uses the term "cast" to apply to implicit conversions as well as to
actual cast expressions.
hasDestinationType.
Example: matches all five of the casts in
int((int)(reinterpret_cast<int>(static_cast<int>(const_cast<int>(42)))))
but does not match the implicit conversion in
long ell = 42;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('functionalCastExpr0')"><a name="functionalCastExpr0Anchor">functionalCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXFunctionalCastExpr.html">CXXFunctionalCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="functionalCastExpr0"><pre>Matches functional cast expressions
Example: Matches Foo(bar);
Foo f = bar;
Foo g = (Foo) bar;
Foo h = Foo(bar);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('implicitCastExpr0')"><a name="implicitCastExpr0Anchor">implicitCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ImplicitCastExpr.html">ImplicitCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="implicitCastExpr0"><pre>Matches the implicit cast nodes of Clang's AST.
This matches many different places, including function call return value
eliding, as well as any type conversions.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('integerLiteral0')"><a name="integerLiteral0Anchor">integerLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="integerLiteral0"><pre>Matches integer literals of all sizes encodings.
Not matching character-encoded integers such as L'a'.
Example matches 1, 1L, 0x1, 1U
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('reinterpretCastExpr0')"><a name="reinterpretCastExpr0Anchor">reinterpretCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXReinterpretCastExpr.html">CXXReinterpretCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="reinterpretCastExpr0"><pre>Matches a reinterpret_cast expression.
Either the source expression or the destination type can be matched
using has(), but hasDestinationType() is more specific and can be
more readable.
Example matches reinterpret_cast<char*>(&p) in
void* p = reinterpret_cast<char*>(&p);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('staticCastExpr0')"><a name="staticCastExpr0Anchor">staticCastExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXStaticCastExpr.html">CXXStaticCastExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="staticCastExpr0"><pre>Matches a C++ static_cast expression.
hasDestinationType
reinterpretCast
Example:
staticCastExpr()
matches
static_cast<long>(8)
in
long eight(static_cast<long>(8));
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('stringLiteral0')"><a name="stringLiteral0Anchor">stringLiteral</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1StringLiteral.html">StringLiteral</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="stringLiteral0"><pre>Matches string literals (also matches wide string literals).
Example matches "abcd", L"abcd"
char *s = "abcd"; wchar_t *ws = L"abcd"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('arraySubscriptExpr0')"><a name="arraySubscriptExpr0Anchor">arraySubscriptExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ArraySubscriptExpr.html">ArraySubscriptExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="arraySubscriptExpr0"><pre>Matches array subscript expressions.
Given
int i = a[1];
arraySubscriptExpr()
matches "a[1]"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('binaryOperator0')"><a name="binaryOperator0Anchor">binaryOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="binaryOperator0"><pre>Matches binary operator expressions.
Example matches a || b
!(a || b)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('bindTemporaryExpr0')"><a name="bindTemporaryExpr0Anchor">bindTemporaryExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXBindTemporaryExpr.html">CXXBindTemporaryExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="bindTemporaryExpr0"><pre>Matches nodes where temporaries are created.
Example matches FunctionTakesString(GetStringByValue())
(matcher = bindTemporaryExpr())
FunctionTakesString(GetStringByValue());
FunctionTakesStringByPointer(GetStringPointer());
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('callExpr0')"><a name="callExpr0Anchor">callExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="callExpr0"><pre>Matches call expressions.
Example matches x.y() and y()
X x;
x.y();
y();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('compoundStmt0')"><a name="compoundStmt0Anchor">compoundStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CompoundStmt.html">CompoundStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="compoundStmt0"><pre>Matches compound statements.
Example matches '{}' and '{{}}'in 'for (;;) {{}}'
for (;;) {{}}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('conditionalOperator0')"><a name="conditionalOperator0Anchor">conditionalOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConditionalOperator.html">ConditionalOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="conditionalOperator0"><pre>Matches conditional operator expressions.
Example matches a ? b : c
(a ? b : c) + 42
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('constructExpr0')"><a name="constructExpr0Anchor">constructExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="constructExpr0"><pre>Matches constructor call expressions (including implicit ones).
Example matches string(ptr, n) and ptr within arguments of f
(matcher = constructExpr())
void f(const string &a, const string &b);
char *ptr;
int n;
f(string(ptr, n), ptr);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('declRefExpr0')"><a name="declRefExpr0Anchor">declRefExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclRefExpr.html">DeclRefExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="declRefExpr0"><pre>Matches expressions that refer to declarations.
Example matches x in if (x)
bool x;
if (x) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('declStmt0')"><a name="declStmt0Anchor">declStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="declStmt0"><pre>Matches declaration statements.
Given
int a;
declStmt()
matches 'int a'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('defaultArgExpr0')"><a name="defaultArgExpr0Anchor">defaultArgExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDefaultArgExpr.html">CXXDefaultArgExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="defaultArgExpr0"><pre>Matches the value of a default argument at the call site.
Example matches the CXXDefaultArgExpr placeholder inserted for the
default value of the second parameter in the call expression f(42)
(matcher = defaultArgExpr())
void f(int x, int y = 0);
f(42);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('deleteExpr0')"><a name="deleteExpr0Anchor">deleteExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXDeleteExpr.html">CXXDeleteExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="deleteExpr0"><pre>Matches delete expressions.
Given
delete X;
deleteExpr()
matches 'delete X'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('doStmt0')"><a name="doStmt0Anchor">doStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="doStmt0"><pre>Matches do statements.
Given
do {} while (true);
doStmt()
matches 'do {} while(true)'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('expr0')"><a name="expr0Anchor">expr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="expr0"><pre>Matches expressions.
Example matches x()
void f() { x(); }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('forStmt0')"><a name="forStmt0Anchor">forStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="forStmt0"><pre>Matches for statements.
Example matches 'for (;;) {}'
for (;;) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('ifStmt0')"><a name="ifStmt0Anchor">ifStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IfStmt.html">IfStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="ifStmt0"><pre>Matches if statements.
Example matches 'if (x) {}'
if (x) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('initListExpr0')"><a name="initListExpr0Anchor">initListExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1InitListExpr.html">InitListExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="initListExpr0"><pre>Matches init list expressions.
Given
int a[] = { 1, 2 };
struct B { int x, y; };
B b = { 5, 6 };
initList()
matches "{ 1, 2 }" and "{ 5, 6 }"
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('materializeTemporaryExpr0')"><a name="materializeTemporaryExpr0Anchor">materializeTemporaryExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MaterializeTemporaryExpr.html">MaterializeTemporaryExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="materializeTemporaryExpr0"><pre>Matches nodes where temporaries are materialized.
Example: Given
struct T {void func()};
T f();
void g(T);
materializeTemporaryExpr() matches 'f()' in these statements
T u(f());
g(f());
but does not match
f();
f().func();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('memberCallExpr0')"><a name="memberCallExpr0Anchor">memberCallExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMemberCallExpr.html">CXXMemberCallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="memberCallExpr0"><pre>Matches member call expressions.
Example matches x.y()
X x;
x.y();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('memberExpr0')"><a name="memberExpr0Anchor">memberExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MemberExpr.html">MemberExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="memberExpr0"><pre>Matches member expressions.
Given
class Y {
void x() { this->x(); x(); Y y; y.x(); a; this->b; Y::b; }
int a; static int b;
};
memberExpr()
matches this->x, x, y.x, a, this->b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('newExpr0')"><a name="newExpr0Anchor">newExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXNewExpr.html">CXXNewExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="newExpr0"><pre>Matches new expressions.
Given
new X;
newExpr()
matches 'new X'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('operatorCallExpr0')"><a name="operatorCallExpr0Anchor">operatorCallExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXOperatorCallExpr.html">CXXOperatorCallExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="operatorCallExpr0"><pre>Matches overloaded operator calls.
Note that if an operator isn't overloaded, it won't match. Instead, use
binaryOperator matcher.
Currently it does not match operators such as new delete.
FIXME: figure out why these do not match?
Example matches both operator<<((o << b), c) and operator<<(o, b)
(matcher = operatorCallExpr())
ostream &operator<< (ostream &out, int i) { };
ostream &o; int b = 1, c = 1;
o << b << c;
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('stmt0')"><a name="stmt0Anchor">stmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="stmt0"><pre>Matches statements.
Given
{ ++a; }
stmt()
matches both the compound statement '{ ++a; }' and '++a'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('switchCase0')"><a name="switchCase0Anchor">switchCase</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1SwitchCase.html">SwitchCase</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="switchCase0"><pre>Matches case and default statements inside switch statements.
Given
switch(a) { case 42: break; default: break; }
switchCase()
matches 'case 42: break;' and 'default: break;'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('unaryExprOrTypeTraitExpr0')"><a name="unaryExprOrTypeTraitExpr0Anchor">unaryExprOrTypeTraitExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="unaryExprOrTypeTraitExpr0"><pre>Matches sizeof (C99), alignof (C++11) and vec_step (OpenCL)
Given
Foo x = bar;
int y = sizeof(x) + alignof(x);
unaryExprOrTypeTraitExpr()
matches sizeof(x) and alignof(x)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('unaryOperator0')"><a name="unaryOperator0Anchor">unaryOperator</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryOperator.html">UnaryOperator</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="unaryOperator0"><pre>Matches unary operator expressions.
Example matches !a
!a || b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('whileStmt0')"><a name="whileStmt0Anchor">whileStmt</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1WhileStmt.html">WhileStmt</a>>...</td></tr>
<tr><td colspan="4" class="doc" id="whileStmt0"><pre>Matches while statements.
Given
while (true) {}
whileStmt()
matches 'while (true) {}'.
</pre></td></tr>
<!--END_DECL_MATCHERS -->
</table>
<!-- ======================================================================= -->
<h2 id="narrowing-matchers">Narrowing Matchers</h2>
<!-- ======================================================================= -->
<p>Narrowing matchers match certain attributes on the current node, thus
narrowing down the set of nodes of the current type to match on.</p>
<p>There are special logical narrowing matchers (allOf, anyOf, anything and unless)
which allow users to create more powerful match expressions.</p>
<table>
<tr style="text-align:left"><th>Return type</th><th>Name</th><th>Parameters</th></tr>
<!-- START_NARROWING_MATCHERS -->
<tr><td>Matcher<*></td><td class="name" onclick="toggle('allOf0')"><a name="allOf0Anchor">allOf</a></td><td>Matcher<*> P1, Matcher<*> P2</td></tr>
<tr><td colspan="4" class="doc" id="allOf0"><pre>Matches if all given matchers match.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('anyOf0')"><a name="anyOf0Anchor">anyOf</a></td><td>Matcher<*> P1, Matcher<*> P2</td></tr>
<tr><td colspan="4" class="doc" id="anyOf0"><pre>Matches if any of the given matchers matches.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('anything0')"><a name="anything0Anchor">anything</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="anything0"><pre>Matches any node.
Useful when another matcher requires a child matcher, but there's no
additional constraint. This will often be used with an explicit conversion
to an internal::Matcher<> type such as TypeMatcher.
Example: DeclarationMatcher(anything()) matches all declarations, e.g.,
"int* p" and "void f()" in
int* p;
void f();
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('unless0')"><a name="unless0Anchor">unless</a></td><td>Matcher<*> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="unless0"><pre>Matches if the provided matcher does not match.
Example matches Y (matcher = recordDecl(unless(hasName("X"))))
class X {};
class Y {};
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>></td><td class="name" onclick="toggle('hasOperatorName0')"><a name="hasOperatorName0Anchor">hasOperatorName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasOperatorName0"><pre>Matches the operator Name of operator expressions (binary or
unary).
Example matches a || b (matcher = binaryOperator(hasOperatorName("||")))
!(a || b)
</pre></td></tr>
<tr><td>Matcher<CXXBoolLiteral></td><td class="name" onclick="toggle('equals2')"><a name="equals2Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals2"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructorDecl.html">CXXConstructorDecl</a>></td><td class="name" onclick="toggle('isImplicit0')"><a name="isImplicit0Anchor">isImplicit</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isImplicit0"><pre>Matches a constructor declaration that has been implicitly added
by the compiler (eg. implicit defaultcopy constructors).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCtorInitializer.html">CXXCtorInitializer</a>></td><td class="name" onclick="toggle('isWritten0')"><a name="isWritten0Anchor">isWritten</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isWritten0"><pre>Matches a contructor initializer if it is explicitly written in
code (as opposed to implicitly added by the compiler).
Given
struct Foo {
Foo() { }
Foo(int) : foo_("A") { }
string foo_;
};
constructorDecl(hasAnyConstructorInitializer(isWritten()))
will match Foo(int), but not Foo()
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXOperatorCallExpr.html">CXXOperatorCallExpr</a>></td><td class="name" onclick="toggle('hasOverloadedOperatorName0')"><a name="hasOverloadedOperatorName0Anchor">hasOverloadedOperatorName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasOverloadedOperatorName0"><pre>Matches overloaded operator names.
Matches overloaded operator names specified in strings without the
"operator" prefix, such as "<<", for OverloadedOperatorCall's.
Example matches a << b
(matcher == operatorCallExpr(hasOverloadedOperatorName("<<")))
a << b;
c && d; assuming both operator<<
and operator&& are overloaded somewhere.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isA1')"><a name="isA1Anchor">isA</a></td><td>StringRef BaseName</td></tr>
<tr><td colspan="4" class="doc" id="isA1"><pre>Overloaded method as shortcut for isA(hasName(...)).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isDerivedFrom1')"><a name="isDerivedFrom1Anchor">isDerivedFrom</a></td><td>StringRef BaseName</td></tr>
<tr><td colspan="4" class="doc" id="isDerivedFrom1"><pre>Overloaded method as shortcut for isDerivedFrom(hasName(...)).
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isExplicitTemplateSpecialization0')"><a name="isExplicitTemplateSpecialization0Anchor">isExplicitTemplateSpecialization</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isExplicitTemplateSpecialization0"><pre>Matches explicit template specializations of function, class, or
static member variable template instantiations.
Given
template<typename T> void A(T t) { }
template<> void A(int N) { }
functionDecl(isExplicitTemplateSpecialization())
matches the specialization A<int>().
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isTemplateInstantiation0')"><a name="isTemplateInstantiation0Anchor">isTemplateInstantiation</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isTemplateInstantiation0"><pre>Matches template instantiations of function, class, or static
member variable template instantiations.
Given
template <typename T> class X {}; class A {}; X<A> x;
or
template <typename T> class X {}; class A {}; template class X<A>;
recordDecl(hasName("::X"), isTemplateInstantiation())
matches the template instantiation of X<A>.
But given
template <typename T> class X {}; class A {};
template <> class X<A> {}; X<A> x;
recordDecl(hasName("::X"), isTemplateInstantiation())
does not match, as X<A> is an explicit template specialization.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('argumentCountIs0')"><a name="argumentCountIs0Anchor">argumentCountIs</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="argumentCountIs0"><pre>Checks that a call expression or a constructor call expression has
a specific number of arguments (including absent default arguments).
Example matches f(0, 0) (matcher = callExpr(argumentCountIs(2)))
void f(int x, int y);
f(0, 0);
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>></td><td class="name" onclick="toggle('equals3')"><a name="equals3Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals3"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CompoundStmt.html">CompoundStmt</a>></td><td class="name" onclick="toggle('statementCountIs0')"><a name="statementCountIs0Anchor">statementCountIs</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="statementCountIs0"><pre>Checks that a compound statement contains a specific number of
child statements.
Example: Given
{ for (;;) {} }
compoundStmt(statementCountIs(0)))
matches '{}'
but does not match the outer compound statement.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>></td><td class="name" onclick="toggle('declCountIs0')"><a name="declCountIs0Anchor">declCountIs</a></td><td>unsigned N</td></tr>
<tr><td colspan="4" class="doc" id="declCountIs0"><pre>Matches declaration statements that contain a specific number of
declarations.
Example: Given
int a, b;
int c;
int d = 2, e;
declCountIs(2)
matches 'int a, b;' and 'int d = 2, e;', but not 'int c;'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>></td><td class="name" onclick="toggle('equals1')"><a name="equals1Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals1"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('isDefinition0')"><a name="isDefinition0Anchor">isDefinition</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isDefinition0"><pre>Matches if a declaration has a body attached.
Example matches A, va, fa
class A {};
class B; Doesn't match, as it has no body.
int va;
extern int vb; Doesn't match, as it doesn't define the variable.
void fa() {}
void fb(); Doesn't match, as it has no body.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TagDecl.html">TagDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('isExplicitTemplateSpecialization2')"><a name="isExplicitTemplateSpecialization2Anchor">isExplicitTemplateSpecialization</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isExplicitTemplateSpecialization2"><pre>Matches explicit template specializations of function, class, or
static member variable template instantiations.
Given
template<typename T> void A(T t) { }
template<> void A(int N) { }
functionDecl(isExplicitTemplateSpecialization())
matches the specialization A<int>().
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('isExternC0')"><a name="isExternC0Anchor">isExternC</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isExternC0"><pre>Matches extern "C" function declarations.
Given:
extern "C" void f() {}
extern "C" { void g() {} }
void h() {}
functionDecl(isExternC())
matches the declaration of f and g, but not the declaration h
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('isTemplateInstantiation2')"><a name="isTemplateInstantiation2Anchor">isTemplateInstantiation</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isTemplateInstantiation2"><pre>Matches template instantiations of function, class, or static
member variable template instantiations.
Given
template <typename T> class X {}; class A {}; X<A> x;
or
template <typename T> class X {}; class A {}; template class X<A>;
recordDecl(hasName("::X"), isTemplateInstantiation())
matches the template instantiation of X<A>.
But given
template <typename T> class X {}; class A {};
template <> class X<A> {}; X<A> x;
recordDecl(hasName("::X"), isTemplateInstantiation())
does not match, as X<A> is an explicit template specialization.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>></td><td class="name" onclick="toggle('equals0')"><a name="equals0Anchor">equals</a></td><td>ValueT Value</td></tr>
<tr><td colspan="4" class="doc" id="equals0"><pre>Matches literals that are equal to the given value.
Example matches true (matcher = boolLiteral(equals(true)))
true
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CharacterLiteral.html">CharacterLiteral</a>>, Matcher<CXXBoolLiteral>,
Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FloatingLiteral.html">FloatingLiteral</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IntegerLiteral.html">IntegerLiteral</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MemberExpr.html">MemberExpr</a>></td><td class="name" onclick="toggle('isArrow0')"><a name="isArrow0Anchor">isArrow</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isArrow0"><pre>Matches member expressions that are called with '->' as opposed
to '.'.
Member calls on the implicit this pointer match as called with '->'.
Given
class Y {
void x() { this->x(); x(); Y y; y.x(); a; this->b; Y::b; }
int a;
static int b;
};
memberExpr(isArrow())
matches this->x, x, y.x, a, this->b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>></td><td class="name" onclick="toggle('hasName0')"><a name="hasName0Anchor">hasName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasName0"><pre>Matches NamedDecl nodes that have the specified name.
Supports specifying enclosing namespaces or classes by prefixing the name
with '<enclosing>::'.
Does not match typedefs of an underlying type with the given name.
Example matches X (Name == "X")
class X;
Example matches X (Name is one of "::a::b::X", "a::b::X", "b::X", "X")
namespace a { namespace b { class X; } }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>></td><td class="name" onclick="toggle('matchesName0')"><a name="matchesName0Anchor">matchesName</a></td><td>std::string RegExp</td></tr>
<tr><td colspan="4" class="doc" id="matchesName0"><pre>Matches NamedDecl nodes whose full names partially match the
given RegExp.
Supports specifying enclosing namespaces or classes by
prefixing the name with '<enclosing>::'. Does not match typedefs
of an underlying type with the given name.
Example matches X (regexp == "::X")
class X;
Example matches X (regexp is one of "::X", "^foo::.*X", among others)
namespace foo { namespace bar { class X; } }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('asString0')"><a name="asString0Anchor">asString</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="asString0"><pre>Matches if the matched type is represented by the given string.
Given
class Y { public: void x(); };
void z() { Y* y; y->x(); }
callExpr(on(hasType(asString("class Y *"))))
matches y->x()
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('isConstQualified0')"><a name="isConstQualified0Anchor">isConstQualified</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isConstQualified0"><pre>Matches QualType nodes that are const-qualified, i.e., that
include "top-level" const.
Given
void a(int);
void b(int const);
void c(const int);
void d(const int*);
void e(int const) {};
functionDecl(hasAnyParameter(hasType(isConstQualified())))
matches "void b(int const)", "void c(const int)" and
"void e(int const) {}". It does not match d as there
is no top-level const on the parameter type "const int *".
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('isInteger0')"><a name="isInteger0Anchor">isInteger</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isInteger0"><pre>Matches QualType nodes that are of integer type.
Given
void a(int);
void b(long);
void c(double);
functionDecl(hasAnyParameter(hasType(isInteger())))
matches "a(int)", "b(long)", but not "c(double)".
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TagDecl.html">TagDecl</a>></td><td class="name" onclick="toggle('isDefinition2')"><a name="isDefinition2Anchor">isDefinition</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isDefinition2"><pre>Matches if a declaration has a body attached.
Example matches A, va, fa
class A {};
class B; Doesn't match, as it has no body.
int va;
extern int vb; Doesn't match, as it doesn't define the variable.
void fa() {}
void fb(); Doesn't match, as it has no body.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TagDecl.html">TagDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>></td><td class="name" onclick="toggle('ofKind0')"><a name="ofKind0Anchor">ofKind</a></td><td>UnaryExprOrTypeTrait Kind</td></tr>
<tr><td colspan="4" class="doc" id="ofKind0"><pre>Matches unary expressions of a certain kind.
Given
int x;
int s = sizeof(x) + alignof(x)
unaryExprOrTypeTraitExpr(ofKind(UETT_SizeOf))
matches sizeof(x)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryOperator.html">UnaryOperator</a>></td><td class="name" onclick="toggle('hasOperatorName1')"><a name="hasOperatorName1Anchor">hasOperatorName</a></td><td>std::string Name</td></tr>
<tr><td colspan="4" class="doc" id="hasOperatorName1"><pre>Matches the operator Name of operator expressions (binary or
unary).
Example matches a || b (matcher = binaryOperator(hasOperatorName("||")))
!(a || b)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>></td><td class="name" onclick="toggle('isDefinition1')"><a name="isDefinition1Anchor">isDefinition</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isDefinition1"><pre>Matches if a declaration has a body attached.
Example matches A, va, fa
class A {};
class B; Doesn't match, as it has no body.
int va;
extern int vb; Doesn't match, as it doesn't define the variable.
void fa() {}
void fb(); Doesn't match, as it has no body.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TagDecl.html">TagDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>></td><td class="name" onclick="toggle('isExplicitTemplateSpecialization1')"><a name="isExplicitTemplateSpecialization1Anchor">isExplicitTemplateSpecialization</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isExplicitTemplateSpecialization1"><pre>Matches explicit template specializations of function, class, or
static member variable template instantiations.
Given
template<typename T> void A(T t) { }
template<> void A(int N) { }
functionDecl(isExplicitTemplateSpecialization())
matches the specialization A<int>().
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>></td><td class="name" onclick="toggle('isTemplateInstantiation1')"><a name="isTemplateInstantiation1Anchor">isTemplateInstantiation</a></td><td></td></tr>
<tr><td colspan="4" class="doc" id="isTemplateInstantiation1"><pre>Matches template instantiations of function, class, or static
member variable template instantiations.
Given
template <typename T> class X {}; class A {}; X<A> x;
or
template <typename T> class X {}; class A {}; template class X<A>;
recordDecl(hasName("::X"), isTemplateInstantiation())
matches the template instantiation of X<A>.
But given
template <typename T> class X {}; class A {};
template <> class X<A> {}; X<A> x;
recordDecl(hasName("::X"), isTemplateInstantiation())
does not match, as X<A> is an explicit template specialization.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>>
</pre></td></tr>
<!--END_NARROWING_MATCHERS -->
</table>
<!-- ======================================================================= -->
<h2 id="traversal-matchers">AST Traversal Matchers</h2>
<!-- ======================================================================= -->
<p>Traversal matchers specify the relationship to other nodes that are
reachable from the current node.</p>
<p>Note that there are special traversal matchers (has, hasDescendant, forEach and
forEachDescendant) which work on all nodes and allow users to write more generic
match expressions.</p>
<table>
<tr style="text-align:left"><th>Return type</th><th>Name</th><th>Parameters</th></tr>
<!-- START_TRAVERSAL_MATCHERS -->
<tr><td>Matcher<*></td><td class="name" onclick="toggle('forEach0')"><a name="forEach0Anchor">forEach</a></td><td>Matcher<ChildT> ChildMatcher</td></tr>
<tr><td colspan="4" class="doc" id="forEach0"><pre>Matches AST nodes that have child AST nodes that match the
provided matcher.
Example matches X, Y (matcher = recordDecl(forEach(recordDecl(hasName("X")))
class X {}; Matches X, because X::X is a class of name X inside X.
class Y { class X {}; };
class Z { class Y { class X {}; }; }; Does not match Z.
ChildT must be an AST base type.
As opposed to 'has', 'forEach' will cause a match for each result that
matches instead of only on the first one.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('forEachDescendant0')"><a name="forEachDescendant0Anchor">forEachDescendant</a></td><td>Matcher<DescendantT> DescendantMatcher</td></tr>
<tr><td colspan="4" class="doc" id="forEachDescendant0"><pre>Matches AST nodes that have descendant AST nodes that match the
provided matcher.
Example matches X, A, B, C
(matcher = recordDecl(forEachDescendant(recordDecl(hasName("X")))))
class X {}; Matches X, because X::X is a class of name X inside X.
class A { class X {}; };
class B { class C { class X {}; }; };
DescendantT must be an AST base type.
As opposed to 'hasDescendant', 'forEachDescendant' will cause a match for
each result that matches instead of only on the first one.
Note: Recursively combined ForEachDescendant can cause many matches:
recordDecl(forEachDescendant(recordDecl(forEachDescendant(recordDecl()))))
will match 10 times (plus injected class name matches) on:
class A { class B { class C { class D { class E {}; }; }; }; };
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('has0')"><a name="has0Anchor">has</a></td><td>Matcher<ChildT> ChildMatcher</td></tr>
<tr><td colspan="4" class="doc" id="has0"><pre>Matches AST nodes that have child AST nodes that match the
provided matcher.
Example matches X, Y (matcher = recordDecl(has(recordDecl(hasName("X")))
class X {}; Matches X, because X::X is a class of name X inside X.
class Y { class X {}; };
class Z { class Y { class X {}; }; }; Does not match Z.
ChildT must be an AST base type.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('hasAncestor0')"><a name="hasAncestor0Anchor">hasAncestor</a></td><td>Matcher<AncestorT> AncestorMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAncestor0"><pre>Matches AST nodes that have an ancestor that matches the provided
matcher.
Given
void f() { if (true) { int x = 42; } }
void g() { for (;;) { int x = 43; } }
expr(integerLiteral(hasAncsestor(ifStmt()))) matches 42, but not 43.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<*></td><td class="name" onclick="toggle('hasDescendant0')"><a name="hasDescendant0Anchor">hasDescendant</a></td><td>Matcher<DescendantT> DescendantMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasDescendant0"><pre>Matches AST nodes that have descendant AST nodes that match the
provided matcher.
Example matches X, Y, Z
(matcher = recordDecl(hasDescendant(recordDecl(hasName("X")))))
class X {}; Matches X, because X::X is a class of name X inside X.
class Y { class X {}; };
class Z { class Y { class X {}; }; };
DescendantT must be an AST base type.
Usable as: Any Matcher
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ArraySubscriptExpr.html">ArraySubscriptExpr</a>></td><td class="name" onclick="toggle('hasBase0')"><a name="hasBase0Anchor">hasBase</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasBase0"><pre>Matches the base expression of an array subscript expression.
Given
int i[5];
void f() { i[1] = 42; }
arraySubscriptExpression(hasBase(implicitCastExpr(
hasSourceExpression(declRefExpr()))))
matches i[1] with the declRefExpr() matching i
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ArraySubscriptExpr.html">ArraySubscriptExpr</a>></td><td class="name" onclick="toggle('hasIndex0')"><a name="hasIndex0Anchor">hasIndex</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasIndex0"><pre>Matches the index expression of an array subscript expression.
Given
int i[5];
void f() { i[1] = 42; }
arraySubscriptExpression(hasIndex(integerLiteral()))
matches i[1] with the integerLiteral() matching 1
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>></td><td class="name" onclick="toggle('hasEitherOperand0')"><a name="hasEitherOperand0Anchor">hasEitherOperand</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasEitherOperand0"><pre>Matches if either the left hand side or the right hand side of a
binary operator matches.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>></td><td class="name" onclick="toggle('hasLHS0')"><a name="hasLHS0Anchor">hasLHS</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasLHS0"><pre>Matches the left hand side of binary operator expressions.
Example matches a (matcher = binaryOperator(hasLHS()))
a || b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1BinaryOperator.html">BinaryOperator</a>></td><td class="name" onclick="toggle('hasRHS0')"><a name="hasRHS0Anchor">hasRHS</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasRHS0"><pre>Matches the right hand side of binary operator expressions.
Example matches b (matcher = binaryOperator(hasRHS()))
a || b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>></td><td class="name" onclick="toggle('hasDeclaration0')"><a name="hasDeclaration0Anchor">hasDeclaration</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasDeclaration0"><pre>Matches a type if the declaration of the type matches the given
matcher.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructorDecl.html">CXXConstructorDecl</a>></td><td class="name" onclick="toggle('hasAnyConstructorInitializer0')"><a name="hasAnyConstructorInitializer0Anchor">hasAnyConstructorInitializer</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCtorInitializer.html">CXXCtorInitializer</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnyConstructorInitializer0"><pre>Matches a constructor initializer.
Given
struct Foo {
Foo() : foo_(1) { }
int foo_;
};
recordDecl(has(constructorDecl(hasAnyConstructorInitializer(anything()))))
record matches Foo, hasAnyConstructorInitializer matches foo_(1)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCtorInitializer.html">CXXCtorInitializer</a>></td><td class="name" onclick="toggle('forField0')"><a name="forField0Anchor">forField</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FieldDecl.html">FieldDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="forField0"><pre>Matches the field declaration of a constructor initializer.
Given
struct Foo {
Foo() : foo_(1) { }
int foo_;
};
recordDecl(has(constructorDecl(hasAnyConstructorInitializer(
forField(hasName("foo_"))))))
matches Foo
with forField matching foo_
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXCtorInitializer.html">CXXCtorInitializer</a>></td><td class="name" onclick="toggle('withInitializer0')"><a name="withInitializer0Anchor">withInitializer</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="withInitializer0"><pre>Matches the initializer expression of a constructor initializer.
Given
struct Foo {
Foo() : foo_(1) { }
int foo_;
};
recordDecl(has(constructorDecl(hasAnyConstructorInitializer(
withInitializer(integerLiteral(equals(1)))))))
matches Foo
with withInitializer matching (1)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMemberCallExpr.html">CXXMemberCallExpr</a>></td><td class="name" onclick="toggle('on0')"><a name="on0Anchor">on</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="on0"><pre>Matches on the implicit object argument of a member call expression.
Example matches y.x() (matcher = callExpr(on(hasType(recordDecl(hasName("Y"))))))
class Y { public: void x(); };
void z() { Y y; y.x(); }",
FIXME: Overload to allow directly matching types?
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMemberCallExpr.html">CXXMemberCallExpr</a>></td><td class="name" onclick="toggle('onImplicitObjectArgument0')"><a name="onImplicitObjectArgument0Anchor">onImplicitObjectArgument</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="onImplicitObjectArgument0"><pre></pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMemberCallExpr.html">CXXMemberCallExpr</a>></td><td class="name" onclick="toggle('thisPointerType1')"><a name="thisPointerType1Anchor">thisPointerType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="thisPointerType1"><pre>Overloaded to match the type's declaration.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXMethodDecl.html">CXXMethodDecl</a>></td><td class="name" onclick="toggle('ofClass0')"><a name="ofClass0Anchor">ofClass</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="ofClass0"><pre>Matches the class declaration that the given method declaration
belongs to.
FIXME: Generalize this for other kinds of declarations.
FIXME: What other kind of declarations would we need to generalize
this to?
Example matches A() in the last line
(matcher = constructExpr(hasDeclaration(methodDecl(
ofClass(hasName("A"))))))
class A {
public:
A();
};
A a = A();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isA0')"><a name="isA0Anchor">isA</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>> Base</td></tr>
<tr><td colspan="4" class="doc" id="isA0"><pre>Similar to isDerivedFrom(), but also matches classes that directly
match Base.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXRecordDecl.html">CXXRecordDecl</a>></td><td class="name" onclick="toggle('isDerivedFrom0')"><a name="isDerivedFrom0Anchor">isDerivedFrom</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>> Base</td></tr>
<tr><td colspan="4" class="doc" id="isDerivedFrom0"><pre>Matches C++ classes that are directly or indirectly derived from
a class matching Base.
Note that a class is not considered to be derived from itself.
Example matches Y, Z, C (Base == hasName("X"))
class X;
class Y : public X {}; directly derived
class Z : public Y {}; indirectly derived
typedef X A;
typedef A B;
class C : public B {}; derived from a typedef of X
In the following example, Bar matches isDerivedFrom(hasName("X")):
class Foo;
typedef Foo X;
class Bar : public Foo {}; derived from a type that X is a typedef of
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('callee1')"><a name="callee1Anchor">callee</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="callee1"><pre>Matches if the call expression's callee's declaration matches the
given matcher.
Example matches y.x() (matcher = callExpr(callee(methodDecl(hasName("x")))))
class Y { public: void x(); };
void z() { Y y; y.x();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('hasAnyArgument0')"><a name="hasAnyArgument0Anchor">hasAnyArgument</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnyArgument0"><pre>Matches any argument of a call expression or a constructor call
expression.
Given
void x(int, int, int) { int y; x(1, y, 42); }
callExpr(hasAnyArgument(declRefExpr()))
matches x(1, y, 42)
with hasAnyArgument(...)
matching y
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('hasArgument0')"><a name="hasArgument0Anchor">hasArgument</a></td><td>unsigned N, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasArgument0"><pre>Matches the n'th argument of a call expression or a constructor
call expression.
Example matches y in x(y)
(matcher = callExpr(hasArgument(0, declRefExpr())))
void x(int) { int y; x(y); }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>></td><td class="name" onclick="toggle('hasDeclaration1')"><a name="hasDeclaration1Anchor">hasDeclaration</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasDeclaration1"><pre>Matches a type if the declaration of the type matches the given
matcher.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CastExpr.html">CastExpr</a>></td><td class="name" onclick="toggle('hasSourceExpression0')"><a name="hasSourceExpression0Anchor">hasSourceExpression</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasSourceExpression0"><pre>Matches if the cast's source expression matches the given matcher.
Example: matches "a string" (matcher =
hasSourceExpression(constructExpr()))
class URL { URL(string); };
URL url = "a string";
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateSpecializationDecl.html">ClassTemplateSpecializationDecl</a>></td><td class="name" onclick="toggle('hasAnyTemplateArgument0')"><a name="hasAnyTemplateArgument0Anchor">hasAnyTemplateArgument</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TemplateArgument.html">TemplateArgument</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnyTemplateArgument0"><pre>Matches classTemplateSpecializations that have at least one
TemplateArgument matching the given InnerMatcher.
Given
template<typename T> class A {};
template<> class A<double> {};
A<int> a;
classTemplateSpecializationDecl(hasAnyTemplateArgument(
refersToType(asString("int"))))
matches the specialization A<int>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ClassTemplateSpecializationDecl.html">ClassTemplateSpecializationDecl</a>></td><td class="name" onclick="toggle('hasTemplateArgument0')"><a name="hasTemplateArgument0Anchor">hasTemplateArgument</a></td><td>unsigned N, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TemplateArgument.html">TemplateArgument</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasTemplateArgument0"><pre>Matches classTemplateSpecializations where the n'th TemplateArgument
matches the given InnerMatcher.
Given
template<typename T, typename U> class A {};
A<bool, int> b;
A<int, bool> c;
classTemplateSpecializationDecl(hasTemplateArgument(
1, refersToType(asString("int"))))
matches the specialization A<bool, int>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CompoundStmt.html">CompoundStmt</a>></td><td class="name" onclick="toggle('hasAnySubstatement0')"><a name="hasAnySubstatement0Anchor">hasAnySubstatement</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnySubstatement0"><pre>Matches compound statements where at least one substatement matches
a given matcher.
Given
{ {}; 1+2; }
hasAnySubstatement(compoundStmt())
matches '{ {}; 1+2; }'
with compoundStmt()
matching '{}'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConditionalOperator.html">ConditionalOperator</a>></td><td class="name" onclick="toggle('hasCondition4')"><a name="hasCondition4Anchor">hasCondition</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasCondition4"><pre>Matches the condition expression of an if statement, for loop,
or conditional operator.
Example matches true (matcher = hasCondition(boolLiteral(equals(true))))
if (true) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConditionalOperator.html">ConditionalOperator</a>></td><td class="name" onclick="toggle('hasFalseExpression0')"><a name="hasFalseExpression0Anchor">hasFalseExpression</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasFalseExpression0"><pre>Matches the false branch expression of a conditional operator.
Example matches b
condition ? a : b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ConditionalOperator.html">ConditionalOperator</a>></td><td class="name" onclick="toggle('hasTrueExpression0')"><a name="hasTrueExpression0Anchor">hasTrueExpression</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasTrueExpression0"><pre>Matches the true branch expression of a conditional operator.
Example matches a
condition ? a : b
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclRefExpr.html">DeclRefExpr</a>></td><td class="name" onclick="toggle('throughUsingDecl0')"><a name="throughUsingDecl0Anchor">throughUsingDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingShadowDecl.html">UsingShadowDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="throughUsingDecl0"><pre>Matches a DeclRefExpr that refers to a declaration through a
specific using shadow declaration.
FIXME: This currently only works for functions. Fix.
Given
namespace a { void f() {} }
using a::f;
void g() {
f(); Matches this ..
a::f(); .. but not this.
}
declRefExpr(throughUsingDeclaration(anything()))
matches f()
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclRefExpr.html">DeclRefExpr</a>></td><td class="name" onclick="toggle('to0')"><a name="to0Anchor">to</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="to0"><pre>Matches a DeclRefExpr that refers to a declaration that matches the
specified matcher.
Example matches x in if(x)
(matcher = declRefExpr(to(varDecl(hasName("x")))))
bool x;
if (x) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>></td><td class="name" onclick="toggle('containsDeclaration0')"><a name="containsDeclaration0Anchor">containsDeclaration</a></td><td>unsigned N, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="containsDeclaration0"><pre>Matches the n'th declaration of a declaration statement.
Note that this does not work for global declarations because the AST
breaks up multiple-declaration DeclStmt's into multiple single-declaration
DeclStmt's.
Example: Given non-global declarations
int a, b = 0;
int c;
int d = 2, e;
declStmt(containsDeclaration(
0, varDecl(hasInitializer(anything()))))
matches only 'int d = 2, e;', and
declStmt(containsDeclaration(1, varDecl()))
matches 'int a, b = 0' as well as 'int d = 2, e;'
but 'int c;' is not matched.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>></td><td class="name" onclick="toggle('hasSingleDecl0')"><a name="hasSingleDecl0Anchor">hasSingleDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasSingleDecl0"><pre>Matches the Decl of a DeclStmt which has a single declaration.
Given
int a, b;
int c;
declStmt(hasSingleDecl(anything()))
matches 'int c;' but not 'int a, b;'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>></td><td class="name" onclick="toggle('hasBody0')"><a name="hasBody0Anchor">hasBody</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasBody0"><pre>Matches a 'for', 'while', or 'do while' statement that has
a given body.
Given
for (;;) {}
hasBody(compoundStmt())
matches 'for (;;) {}'
with compoundStmt()
matching '{}'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>></td><td class="name" onclick="toggle('hasCondition3')"><a name="hasCondition3Anchor">hasCondition</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasCondition3"><pre>Matches the condition expression of an if statement, for loop,
or conditional operator.
Example matches true (matcher = hasCondition(boolLiteral(equals(true))))
if (true) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ExplicitCastExpr.html">ExplicitCastExpr</a>></td><td class="name" onclick="toggle('hasDestinationType0')"><a name="hasDestinationType0Anchor">hasDestinationType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasDestinationType0"><pre>Matches casts whose destination type matches a given matcher.
(Note: Clang's AST refers to other conversions as "casts" too, and calls
actual casts "explicit" casts.)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('hasType3')"><a name="hasType3Anchor">hasType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasType3"><pre>Overloaded to match the declaration of the expression's or value
declaration's type.
In case of a value declaration (for example a variable declaration),
this resolves one layer of indirection. For example, in the value
declaration "X x;", recordDecl(hasName("X")) matches the declaration of X,
while varDecl(hasType(recordDecl(hasName("X")))) matches the declaration
of x."
Example matches x (matcher = expr(hasType(recordDecl(hasName("X")))))
and z (matcher = varDecl(hasType(recordDecl(hasName("X")))))
class X {};
void y(X &x) { x; X z; }
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ValueDecl.html">ValueDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('ignoringImpCasts0')"><a name="ignoringImpCasts0Anchor">ignoringImpCasts</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="ignoringImpCasts0"><pre>Matches expressions that match InnerMatcher after any implicit casts
are stripped off.
Parentheses and explicit casts are not discarded.
Given
int arr[5];
int a = 0;
char b = 0;
const int c = a;
int *d = arr;
long e = (long) 0l;
The matchers
varDecl(hasInitializer(ignoringImpCasts(integerLiteral())))
varDecl(hasInitializer(ignoringImpCasts(declRefExpr())))
would match the declarations for a, b, c, and d, but not e.
While
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
only match the declarations for b, c, and d.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('ignoringParenCasts0')"><a name="ignoringParenCasts0Anchor">ignoringParenCasts</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="ignoringParenCasts0"><pre>Matches expressions that match InnerMatcher after parentheses and
casts are stripped off.
Implicit and non-C Style casts are also discarded.
Given
int a = 0;
char b = (0);
void* c = reinterpret_cast<char*>(0);
char d = char(0);
The matcher
varDecl(hasInitializer(ignoringParenCasts(integerLiteral())))
would match the declarations for a, b, c, and d.
while
varDecl(hasInitializer(integerLiteral()))
only match the declaration for a.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>></td><td class="name" onclick="toggle('ignoringParenImpCasts0')"><a name="ignoringParenImpCasts0Anchor">ignoringParenImpCasts</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="ignoringParenImpCasts0"><pre>Matches expressions that match InnerMatcher after implicit casts and
parentheses are stripped off.
Explicit casts are not discarded.
Given
int arr[5];
int a = 0;
char b = (0);
const int c = a;
int *d = (arr);
long e = ((long) 0l);
The matchers
varDecl(hasInitializer(ignoringParenImpCasts(integerLiteral())))
varDecl(hasInitializer(ignoringParenImpCasts(declRefExpr())))
would match the declarations for a, b, c, and d, but not e.
while
varDecl(hasInitializer(integerLiteral()))
varDecl(hasInitializer(declRefExpr()))
would only match the declaration for a.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>></td><td class="name" onclick="toggle('hasBody1')"><a name="hasBody1Anchor">hasBody</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasBody1"><pre>Matches a 'for', 'while', or 'do while' statement that has
a given body.
Given
for (;;) {}
hasBody(compoundStmt())
matches 'for (;;) {}'
with compoundStmt()
matching '{}'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>></td><td class="name" onclick="toggle('hasCondition1')"><a name="hasCondition1Anchor">hasCondition</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasCondition1"><pre>Matches the condition expression of an if statement, for loop,
or conditional operator.
Example matches true (matcher = hasCondition(boolLiteral(equals(true))))
if (true) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>></td><td class="name" onclick="toggle('hasIncrement0')"><a name="hasIncrement0Anchor">hasIncrement</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasIncrement0"><pre>Matches the increment statement of a for loop.
Example:
forStmt(hasIncrement(unaryOperator(hasOperatorName("++"))))
matches '++x' in
for (x; x < N; ++x) { }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ForStmt.html">ForStmt</a>></td><td class="name" onclick="toggle('hasLoopInit0')"><a name="hasLoopInit0Anchor">hasLoopInit</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasLoopInit0"><pre>Matches the initialization statement of a for loop.
Example:
forStmt(hasLoopInit(declStmt()))
matches 'int x = 0' in
for (int x = 0; x < N; ++x) { }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('hasAnyParameter0')"><a name="hasAnyParameter0Anchor">hasAnyParameter</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ParmVarDecl.html">ParmVarDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnyParameter0"><pre>Matches any parameter of a function declaration.
Does not match the 'this' parameter of a method.
Given
class X { void f(int x, int y, int z) {} };
methodDecl(hasAnyParameter(hasName("y")))
matches f(int x, int y, int z) {}
with hasAnyParameter(...)
matching int y
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('hasParameter0')"><a name="hasParameter0Anchor">hasParameter</a></td><td>unsigned N, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ParmVarDecl.html">ParmVarDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasParameter0"><pre>Matches the n'th parameter of a function declaration.
Given
class X { void f(int x) {} };
methodDecl(hasParameter(0, hasType(varDecl())))
matches f(int x) {}
with hasParameter(...)
matching int x
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1FunctionDecl.html">FunctionDecl</a>></td><td class="name" onclick="toggle('returns0')"><a name="returns0Anchor">returns</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="returns0"><pre>Matches the return type of a function declaration.
Given:
class X { int f() { return 1; } };
methodDecl(returns(asString("int")))
matches int f() { return 1; }
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IfStmt.html">IfStmt</a>></td><td class="name" onclick="toggle('hasCondition0')"><a name="hasCondition0Anchor">hasCondition</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasCondition0"><pre>Matches the condition expression of an if statement, for loop,
or conditional operator.
Example matches true (matcher = hasCondition(boolLiteral(equals(true))))
if (true) {}
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1IfStmt.html">IfStmt</a>></td><td class="name" onclick="toggle('hasConditionVariableStatement0')"><a name="hasConditionVariableStatement0Anchor">hasConditionVariableStatement</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1DeclStmt.html">DeclStmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasConditionVariableStatement0"><pre>Matches the condition variable statement in an if statement.
Given
if (A* a = GetAPointer()) {}
hasConditionVariableStatment(...)
matches 'A* a = GetAPointer()'.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ImplicitCastExpr.html">ImplicitCastExpr</a>></td><td class="name" onclick="toggle('hasImplicitDestinationType0')"><a name="hasImplicitDestinationType0Anchor">hasImplicitDestinationType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasImplicitDestinationType0"><pre>Matches implicit casts whose destination type matches a given
matcher.
FIXME: Unit test this matcher
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MemberExpr.html">MemberExpr</a>></td><td class="name" onclick="toggle('hasObjectExpression0')"><a name="hasObjectExpression0Anchor">hasObjectExpression</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasObjectExpression0"><pre>Matches a member expression where the object expression is
matched by a given matcher.
Given
struct X { int m; };
void f(X x) { x.m; m; }
memberExpr(hasObjectExpression(hasType(recordDecl(hasName("X")))))))
matches "x.m" and "m"
with hasObjectExpression(...)
matching "x" and the implicit object expression of "m" which has type X*.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1MemberExpr.html">MemberExpr</a>></td><td class="name" onclick="toggle('member0')"><a name="member0Anchor">member</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ValueDecl.html">ValueDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="member0"><pre>Matches a member expression where the member is matched by a
given matcher.
Given
struct { int first, second; } first, second;
int i(second.first);
int j(first.second);
memberExpr(member(hasName("first")))
matches second.first
but not first.second (because the member name there is "second").
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('hasDeclaration2')"><a name="hasDeclaration2Anchor">hasDeclaration</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasDeclaration2"><pre>Matches a type if the declaration of the type matches the given
matcher.
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CallExpr.html">CallExpr</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1CXXConstructExpr.html">CXXConstructExpr</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('pointsTo1')"><a name="pointsTo1Anchor">pointsTo</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="pointsTo1"><pre>Overloaded to match the pointee type's declaration.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>></td><td class="name" onclick="toggle('references1')"><a name="references1Anchor">references</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="references1"><pre>Overloaded to match the referenced type's declaration.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('alignOfExpr0')"><a name="alignOfExpr0Anchor">alignOfExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="alignOfExpr0"><pre>Same as unaryExprOrTypeTraitExpr, but only matching
alignof.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>></td><td class="name" onclick="toggle('sizeOfExpr0')"><a name="sizeOfExpr0Anchor">sizeOfExpr</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="sizeOfExpr0"><pre>Same as unaryExprOrTypeTraitExpr, but only matching
sizeof.
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TemplateArgument.html">TemplateArgument</a>></td><td class="name" onclick="toggle('refersToDeclaration0')"><a name="refersToDeclaration0Anchor">refersToDeclaration</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="refersToDeclaration0"><pre>Matches a TemplateArgument that refers to a certain declaration.
Given
template<typename T> struct A {};
struct B { B* next; };
A<&B::next> a;
classTemplateSpecializationDecl(hasAnyTemplateArgument(
refersToDeclaration(fieldDecl(hasName("next"))))
matches the specialization A<&B::next> with fieldDecl(...) matching
B::next
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1TemplateArgument.html">TemplateArgument</a>></td><td class="name" onclick="toggle('refersToType0')"><a name="refersToType0Anchor">refersToType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="refersToType0"><pre>Matches a TemplateArgument that refers to a certain type.
Given
struct X {};
template<typename T> struct A {};
A<X> a;
classTemplateSpecializationDecl(hasAnyTemplateArgument(
refersToType(class(hasName("X")))))
matches the specialization A<X>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryExprOrTypeTraitExpr.html">UnaryExprOrTypeTraitExpr</a>></td><td class="name" onclick="toggle('hasArgumentOfType0')"><a name="hasArgumentOfType0Anchor">hasArgumentOfType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1QualType.html">QualType</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasArgumentOfType0"><pre>Matches unary expressions that have a specific type of argument.
Given
int a, c; float b; int s = sizeof(a) + sizeof(b) + alignof(c);
unaryExprOrTypeTraitExpr(hasArgumentOfType(asString("int"))
matches sizeof(a) and alignof(c)
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UnaryOperator.html">UnaryOperator</a>></td><td class="name" onclick="toggle('hasUnaryOperand0')"><a name="hasUnaryOperand0Anchor">hasUnaryOperand</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasUnaryOperand0"><pre>Matches if the operand of a unary operator matches.
Example matches true (matcher = hasOperand(boolLiteral(equals(true))))
!true
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingDecl.html">UsingDecl</a>></td><td class="name" onclick="toggle('hasAnyUsingShadowDecl0')"><a name="hasAnyUsingShadowDecl0Anchor">hasAnyUsingShadowDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingShadowDecl.html">UsingShadowDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasAnyUsingShadowDecl0"><pre>Matches any using shadow declaration.
Given
namespace X { void b(); }
using X::b;
usingDecl(hasAnyUsingShadowDecl(hasName("b"))))
matches using X::b </pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1UsingShadowDecl.html">UsingShadowDecl</a>></td><td class="name" onclick="toggle('hasTargetDecl0')"><a name="hasTargetDecl0Anchor">hasTargetDecl</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1NamedDecl.html">NamedDecl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasTargetDecl0"><pre>Matches a using shadow declaration where the target declaration is
matched by the given matcher.
Given
namespace X { int a; void b(); }
using X::a;
using X::b;
usingDecl(hasAnyUsingShadowDecl(hasTargetDecl(functionDecl())))
matches using X::b but not using X::a </pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ValueDecl.html">ValueDecl</a>></td><td class="name" onclick="toggle('hasType2')"><a name="hasType2Anchor">hasType</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasType2"><pre>Overloaded to match the declaration of the expression's or value
declaration's type.
In case of a value declaration (for example a variable declaration),
this resolves one layer of indirection. For example, in the value
declaration "X x;", recordDecl(hasName("X")) matches the declaration of X,
while varDecl(hasType(recordDecl(hasName("X")))) matches the declaration
of x."
Example matches x (matcher = expr(hasType(recordDecl(hasName("X")))))
and z (matcher = varDecl(hasType(recordDecl(hasName("X")))))
class X {};
void y(X &x) { x; X z; }
Usable as: Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>>, Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1ValueDecl.html">ValueDecl</a>>
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>></td><td class="name" onclick="toggle('hasInitializer0')"><a name="hasInitializer0Anchor">hasInitializer</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasInitializer0"><pre>Matches a variable declaration that has an initializer expression
that matches the given matcher.
Example matches x (matcher = varDecl(hasInitializer(callExpr())))
bool y() { return true; }
bool x = y();
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1WhileStmt.html">WhileStmt</a>></td><td class="name" onclick="toggle('hasBody2')"><a name="hasBody2Anchor">hasBody</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasBody2"><pre>Matches a 'for', 'while', or 'do while' statement that has
a given body.
Given
for (;;) {}
hasBody(compoundStmt())
matches 'for (;;) {}'
with compoundStmt()
matching '{}'
</pre></td></tr>
<tr><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1WhileStmt.html">WhileStmt</a>></td><td class="name" onclick="toggle('hasCondition2')"><a name="hasCondition2Anchor">hasCondition</a></td><td>Matcher<<a href="http://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>> InnerMatcher</td></tr>
<tr><td colspan="4" class="doc" id="hasCondition2"><pre>Matches the condition expression of an if statement, for loop,
or conditional operator.
Example matches true (matcher = hasCondition(boolLiteral(equals(true))))
if (true) {}
</pre></td></tr>
<!--END_TRAVERSAL_MATCHERS -->
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