20 lines
311 B
Text
20 lines
311 B
Text
grammar t044trace;
|
|
options {
|
|
language = Python;
|
|
}
|
|
|
|
@init {
|
|
self._stack = None
|
|
}
|
|
|
|
a: '<' ((INT '+')=>b|c) '>';
|
|
b: c ('+' c)*;
|
|
c: INT
|
|
{
|
|
if self._stack is None:
|
|
self._stack = self.getRuleInvocationStack()
|
|
}
|
|
;
|
|
|
|
INT: ('0'..'9')+;
|
|
WS: (' ' | '\n' | '\t')+ {$channel = HIDDEN;};
|