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Add regression tests for #677

This commit is contained in:
Sam Harwell 2014-08-09 10:54:04 -05:00
parent 550a737acf
commit 399a1df047
1 changed files with 64 additions and 0 deletions
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64
tool/test/org/antlr/v4/test/TestLeftRecursion.java
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@ -342,6 +342,70 @@ public class TestLeftRecursion extends BaseTest {
runTests(grammar, tests, "s"); runTests(grammar, tests, "s");
} }
/**
* This is a regression test for antlr/antlr4#677 "labels not working in
* grammar file".
* https://github.com/antlr/antlr4/issues/677
*
* <p>This test treats {@code ,} and {@code >>} as part of a single compound
* operator (similar to a ternary operator).</p>
*/
@Test public void testReturnValueAndActionsList1() throws Exception {
String grammar =
"grammar T;\n" +
"s @after {System.out.println($ctx.toStringTree(this));} : expr EOF;\n" +
"expr:\n" +
" a=expr '*' a=expr #Factor\n" +
" | b+=expr (',' b+=expr)* '>>' c=expr #Send\n" +
" | ID #JustId //semantic check on modifiers\n" +
";\n" +
"\n" +
"ID : ('a'..'z'|'A'..'Z'|'_')\n" +
" ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*\n" +
";\n" +
"\n" +
"WS : [ \\t\\n]+ -> skip ;\n";
String[] tests = {
"a*b", "(s (expr (expr a) * (expr b)) <EOF>)",
"a,c>>x", "(s (expr (expr a) , (expr c) >> (expr x)) <EOF>)",
"x", "(s (expr x) <EOF>)",
"a*b,c,x*y>>r", "(s (expr (expr (expr a) * (expr b)) , (expr c) , (expr (expr x) * (expr y)) >> (expr r)) <EOF>)",
};
runTests(grammar, tests, "s");
}
/**
* This is a regression test for antlr/antlr4#677 "labels not working in
* grammar file".
* https://github.com/antlr/antlr4/issues/677
*
* <p>This test treats the {@code ,} and {@code >>} operators separately.</p>
*/
@Test public void testReturnValueAndActionsList2() throws Exception {
String grammar =
"grammar T;\n" +
"s @after {System.out.println($ctx.toStringTree(this));} : expr EOF;\n" +
"expr:\n" +
" a=expr '*' a=expr #Factor\n" +
" | b+=expr ',' b+=expr #Comma\n" +
" | b+=expr '>>' c=expr #Send\n" +
" | ID #JustId //semantic check on modifiers\n" +
";\n" +
"\n" +
"ID : ('a'..'z'|'A'..'Z'|'_')\n" +
" ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*\n" +
";\n" +
"\n" +
"WS : [ \\t\\n]+ -> skip ;\n";
String[] tests = {
"a*b", "(s (expr (expr a) * (expr b)) <EOF>)",
"a,c>>x", "(s (expr (expr (expr a) , (expr c)) >> (expr x)) <EOF>)",
"x", "(s (expr x) <EOF>)",
"a*b,c,x*y>>r", "(s (expr (expr (expr (expr (expr a) * (expr b)) , (expr c)) , (expr (expr x) * (expr y))) >> (expr r)) <EOF>)",
};
runTests(grammar, tests, "s");
}
@Test public void testLabelsOnOpSubrule() throws Exception { @Test public void testLabelsOnOpSubrule() throws Exception {
String grammar = String grammar =
"grammar T;\n" + "grammar T;\n" +