allow omission of location in reductions

There is code in here for omission of location and data in reductions.
Unfortunately we cannot enable the omission of data unless we make changes to
the backtracking. In the current implementation we push the token data with an
mcopy from the data in the token.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/parsetree.h b/src/parsetree.h
index 5f5f10a5..d1ce46d7 100644
--- a/src/parsetree.h
+++ b/src/parsetree.h
@@ -981,7 +981,9 @@ typedef Vector<ReduceAction*> ReduceActionVect;
 struct Reduction
 {
 	Reduction( const InputLoc &loc, String name )
-		: loc(loc), name(name)
+	:
+		loc(loc), name(name),
+		needData(0), needLoc(0)
 	{
 		static int nextId = 1;	
 		id = nextId++;
@@ -994,6 +996,9 @@ struct Reduction
 	String var;
 	int id;
 
+	bool *needData;
+	bool *needLoc;
+
 	ReduceActionList reduceActions;
 	ReduceNonTermList reduceNonTerms;
 };