org.antlr.v4.test.runtime.templates.ParserExec.LabelAliasingAcrossLabeledAlternatives.stg Maven / Gradle / Ivy

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A collection of tests for ANTLR 4 Runtime libraries.

There is a newer version: 4.9.0

/**
 * This is a regression test for antlr/antlr4#195 "label 'label' type
 * mismatch with previous definition: TOKEN_LABEL!=RULE_LABEL"
 * https://github.com/antlr/antlr4/issues/195
 */

TestType() ::= "Parser"

Options ::= [
	"Debug": false
]

Grammar ::= [
	"T": {}
]

Input() ::= "xy"

Rule() ::= "start"

Output() ::= <<
x
y<\n>
>>

Errors() ::= ""

grammar(grammarName) ::= <<
grammar ;
start : a* EOF;
a
  : label=subrule {} #One
  | label='y' {} #Two
  ;
subrule : 'x';
WS : (' '|'\n') -> skip ;
>>