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* Working evaluator.

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* Mutually recursive attribute sets.
* Print evaluator efficiency statistics.
This commit is contained in:
Eelco Dolstra 2003-10-31 17:09:31 +00:00
parent f1c1a3c97f
commit 9210d4d530
10 changed files with 540 additions and 309 deletions
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20
src/fix-ng/fix-expr.hh
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@ -1,6 +1,8 @@
#ifndef __FIXEXPR_H
#define __FIXEXPR_H
#include <map>
#include <aterm2.h>
#include "util.hh"
@ -15,13 +17,27 @@ typedef ATerm Expr;
/* Generic bottomup traversal over ATerms. The traversal first
recursively descends into subterms, and then applies the given term
function to the resulting term. */
struct TermFun
{
virtual ATerm operator () (ATerm e) = 0;
};
ATerm bottomupRewrite(TermFun & f, ATerm e);
/* Query all attributes in an attribute set expression. The
expression must be in normal form. */
typedef map<string, Expr> Attrs;
void queryAllAttrs(Expr e, Attrs & attrs);
/* Query a specific attribute from an attribute set expression. The
expression must be in normal form. */
Expr queryAttr(Expr e, const string & name);
/* Create an attribute set expression from an Attrs value. */
Expr makeAttrs(const Attrs & attrs);
/* Perform a set of substitutions on an expression. */
typedef map<string, Expr> Subs;
ATerm substitute(Subs & subs, ATerm e);
#endif /* !__FIXEXPR_H */