xref: /aosp_15_r20/external/antlr/runtime/Cpp/tests/t044trace.g (revision 16467b971bd3e2009fad32dd79016f2c7e421deb) 
1grammar t044trace;
2options {
3  language =Cpp;
4}
5
6@lexer::includes
7{
8#include "UserTestTraits.hpp"
9}
10@lexer::namespace
11{ Antlr3Test }
12
13@parser::includes {
14#include "UserTestTraits.hpp"
15}
16@parser::namespace
17{ Antlr3Test }
18
19@init {
20    self._stack = None
21}
22
23a: '<' ((INT '+')=>b|c) '>';
24b: c ('+' c)*;
25c: INT
26    {
27        if self._stack is None:
28            self._stack = self.getRuleInvocationStack()
29    }
30    ;
31
32INT: ('0'..'9')+;
33WS: (' ' | '\n' | '\t')+ {$channel = HIDDEN;};
34