org.antlr.v4.test.runtime.templates.ParseTrees.ExtraTokensAndAltLabels.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

TestType() ::= "Parser"

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

Input() ::= "${ ? a ?}"

Rule() ::= "s"

Output() ::= <<
(s ${ (v ? a) ? })<\n>
>>

Errors() ::= <<
line 1:3 extraneous input '?' expecting {'a', 'b'}
line 1:7 extraneous input '?' expecting '}'<\n>
>>

grammar(grammarName) ::= <<
grammar ;

s
@init {

}
@after {

}
  : '${' v '}'
  ;

v : A #altA
  | B #altB
  ;

A : 'a' ;
B : 'b' ;

WHITESPACE : [ \n\t\r]+ -> channel(HIDDEN) ;

ERROR : . ;
>>