xref: /aosp_15_r20/external/antlr/runtime/Python/tests/t044trace.g (revision 16467b971bd3e2009fad32dd79016f2c7e421deb) 
1*16467b97STreehugger Robotgrammar t044trace;
2*16467b97STreehugger Robotoptions {
3*16467b97STreehugger Robot  language = Python;
4*16467b97STreehugger Robot}
5*16467b97STreehugger Robot
6*16467b97STreehugger Robot@init {
7*16467b97STreehugger Robot    self._stack = None
8*16467b97STreehugger Robot}
9*16467b97STreehugger Robot
10*16467b97STreehugger Robota: '<' ((INT '+')=>b|c) '>';
11*16467b97STreehugger Robotb: c ('+' c)*;
12*16467b97STreehugger Robotc: INT
13*16467b97STreehugger Robot    {
14*16467b97STreehugger Robot        if self._stack is None:
15*16467b97STreehugger Robot            self._stack = self.getRuleInvocationStack()
16*16467b97STreehugger Robot    }
17*16467b97STreehugger Robot    ;
18*16467b97STreehugger Robot
19*16467b97STreehugger RobotINT: ('0'..'9')+;
20*16467b97STreehugger RobotWS: (' ' | '\n' | '\t')+ {$channel = HIDDEN;};
21