org.antlr.v4.test.runtime.templates.LeftRecursion.TernaryExprExplicitAssociativity.stg Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of runtime-testsuite Show documentation

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#542 "First alternative cannot
 * be right-associative".
 * https://github.com/antlr/antlr4/issues/542
 */

TestType() ::= "Parser"

Options ::= [
	"Debug": false
]

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

Rule() ::= "s"

grammar(grammarName) ::= <<
grammar ;
s @after {} : e EOF; // must indicate EOF can follow or 'a\' won't match
e :\ e '*' e
  |\ e '+' e
  |\ e '?' e ':' e
  |\ e '=' e
  | ID
  ;
ID : 'a'..'z'+ ;
WS : (' '|'\n') -> skip ;
>>