[antlr-interest] How to pass a pointer from a rule to another in the Treewalker in C++ ?

[Anthony Brenelière]

// Here is the root rule, ciaoTreeDocument :

ciaoTreeDocument
	:	( statementA )*
;

// A pointer is created, named '_curstat'.
// This pointer is passed to the rule 'statProperties'
// Everything is OK when the rule is called, and _curstat is OK, with a
type 'CObject *'

statementA
	{	
		CObject * _curstat = world->addObject();
		_curstat->aP(CATEGORY, "Statement"); 
	}
	:	#(R_STA ( statProperties[ _curstat ])* statement) 
;

// In the statProperties rule, _curstat has changed : the value of the
pointer has changed,
// and the type of _curstat has also changed :

// _curstat IS NOW 'antlr::ASTRefCount<antlr::AST>' instead of 'CObject
*' !!!!!!!!!!!

statProperties
	[ CObject * _curstat ]
	:	statStateA[ _curstat ]
	|	statId[ _curstat ]
;

So, my question is :

Any idea to pass a pointer from a rule to another in the Treewalker in
C++ ?

Cordially,
Anthony



 

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