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Add testPredicatedKeywords

This commit is contained in:
Sam Harwell 2012-11-03 15:14:50 -05:00
parent b6653293df
commit cf5bf7c384
1 changed files with 18 additions and 0 deletions
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18
tool/test/org/antlr/v4/test/TestSemPredEvalLexer.java
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@ -130,4 +130,22 @@ public class TestSemPredEvalLexer extends BaseTest {
"[@4,12:11='<EOF>',<-1>,3:0]\n";
assertEquals(expecting, found);
}
@Test public void testPredicatedKeywords() {
String grammar =
"lexer grammar A;" +
"ENUM : [a-z]+ {getText().equals(\"enum\")}? {System.out.println(\"enum!\");} ;\n" +
"ID : [a-z]+ {System.out.println(\"ID \"+getText());} ;\n" +
"WS : [ \n] -> skip ;";
String found = execLexer("A.g4", grammar, "A", "enum enu a");
String expecting =
"enum!\n" +
"ID enu\n" +
"ID a\n" +
"[@0,0:3='enum',<1>,1:0]\n" +
"[@1,5:7='enu',<2>,1:5]\n" +
"[@2,9:9='a',<2>,1:9]\n" +
"[@3,10:9='<EOF>',<-1>,1:10]\n";
assertEquals(expecting, found);
}
}