t004lexer.html - Android社区 - https://www.androidos.net.cn/

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<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<title>t004lexer</title>

<!-- ANTLR includes -->
<script type="text/javascript" src="../../lib/antlr3-all.js"></script>
<script type="text/javascript" src="t004lexer.js"></script>

<!-- JsUnit include -->
<script type="text/javascript" src="../jsunit/app/jsUnitCore.js"></script>

<!-- Test Code -->
<script type="text/javascript">
    function TLexer() {
        TLexer.superclass.constructor.apply(this, arguments);
    }
    org.antlr.lang.extend(TLexer, t004lexer, {
        reportError: function(re) {
            /* don't recover, just crash */
            throw re;
        }
    });

    function testValid() {
        var stream = new org.antlr.runtime.ANTLRStringStream("ffofoofooo"),
            lexer = new TLexer(stream),
            token;

        token = lexer.nextToken();
        assertEquals(token.getType(), lexer.FOO);
        assertEquals(token.getStartIndex(), 0);
        assertEquals(token.getStopIndex(), 0);
        assertEquals(token.getText(), "f");

        token = lexer.nextToken();
        assertEquals(token.getType(), lexer.FOO);
        assertEquals(token.getStartIndex(), 1);
        assertEquals(token.getStopIndex(), 2);
        assertEquals(token.getText(), 'fo');

        token = lexer.nextToken();
        assertEquals(token.getType(), lexer.FOO);
        assertEquals(token.getStartIndex(), 3);
        assertEquals(token.getStopIndex(), 5);
        assertEquals(token.getText(), 'foo');

        token = lexer.nextToken();
        assertEquals(token.getType(), lexer.FOO);
        assertEquals(token.getStartIndex(), 6);
        assertEquals(token.getStopIndex(), 9);
        assertEquals(token.getText(), 'fooo');

        token = lexer.nextToken();
        assertEquals(token.getType(), lexer.EOF);
    }

    function testMalformedInput() {
        var stream = new org.antlr.runtime.ANTLRStringStream('2'),
            lexer = new TLexer(stream),
            token;

        try {
            token = lexer.nextToken();
            fail("nextToken should have thrown error on invalid input");
        } catch (e) {
            assertEquals(e.expecting, 'f');
            assertEquals(e.getUnexpectedType(), '2');
        }
    }
</script>

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<body>
    <h1>t004lexer</h1>
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