Examples with LexerGrammar org.antlr.v4.tool.LexerGrammar used on opensource projects

Example 21 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestATNLexerInterpreter method testRecursiveLexerRuleRefWithWildcard.

@Test
public void testRecursiveLexerRuleRefWithWildcard() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "CMT : '/*' (CMT | .)*? '*/' ;\n" + "WS : (' '|'\\n')+ ;");
    String expecting = "CMT, WS, CMT, WS, EOF";
    checkLexerMatches(lg, "/* ick */\n" + "/* /* */\n" + "/* /*nested*/ */\n", expecting);
}

Example 22 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestATNLexerInterpreter method testLexerNotSet.

@Test
public void testLexerNotSet() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "ID : ~('a'|'b')\n ;");
    String expecting = "ID, EOF";
    checkLexerMatches(lg, "c", expecting);
}

Example 23 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestATNLexerInterpreter method testLexerWildcardGreedyLoopByDefault.

@Test
public void testLexerWildcardGreedyLoopByDefault() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "CMT : '//' .* '\\n' ;\n");
    String expecting = "CMT, EOF";
    checkLexerMatches(lg, "//x\n//y\n", expecting);
}

Example 24 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestATNLexerInterpreter method testLexerSetUnicodeBMP.

@Test
public void testLexerSetUnicodeBMP() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "ID : ('\u611B'|'\u611C')\n ;");
    String expecting = "ID, EOF";
    checkLexerMatches(lg, "\u611B", expecting);
}

Example 25 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestATNLexerInterpreter method testEOFAtEndOfLineComment2.

@Test
public void testEOFAtEndOfLineComment2() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "CMT : '//' ~('\\n'|'\\r')* ;\n");
    String expecting = "CMT, EOF";
    checkLexerMatches(lg, "//x", expecting);
}