source: src/ResolvExpr/PolyCost.cc @ 2908f08

Last change on this file since 2908f08 was 2908f08, checked in by Andrew Beach <ajbeach@…>, 7 months ago

Most of ResolvExpr? was written before the new style standard. Some files updated, focus on headers.

  • Property mode set to 100644
File size: 1.5 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// PolyCost.cc --
8//
9// Author           : Richard C. Bilson
10// Created On       : Sun May 17 09:50:12 2015
11// Last Modified By : Andrew Beach
12// Last Modified On : Wed Jun 19 10:45:00 2019
13// Update Count     : 4
14//
15
16#include "AST/SymbolTable.hpp"
17#include "AST/Pass.hpp"
18#include "AST/Type.hpp"
19#include "AST/TypeEnvironment.hpp"
20
21namespace ResolvExpr {
22
23namespace {
24
25class PolyCost {
26        const ast::SymbolTable &symtab;
27public:
28        int result;
29        const ast::TypeEnvironment &env_;
30
31        PolyCost( const ast::SymbolTable & symtab, const ast::TypeEnvironment & env ) 
32        : symtab( symtab ), result( 0 ), env_( env ) {}
33
34        void previsit( const ast::TypeInstType * type ) {
35                if ( const ast::EqvClass * eqv = env_.lookup( *type ) ) /* && */ if ( eqv->bound ) {
36                        if ( const ast::TypeInstType * otherType = eqv->bound.as< ast::TypeInstType >() ) {
37                                if ( symtab.lookupType( otherType->name ) ) {
38                                        // Bound to opaque type.
39                                        result += 1;
40                                }
41                        } else {
42                                // Bound to concrete type.
43                                result += 1;
44                        }
45                }
46        }
47};
48
49} // namespace
50
51int polyCost(
52        const ast::Type * type, const ast::SymbolTable & symtab, const ast::TypeEnvironment & env
53) {
54        ast::Pass<PolyCost> costing( symtab, env );
55        type->accept( costing );
56        return (costing.core.result > 0) ? 1 : 0;
57}
58
59} // namespace ResolvExpr
60
61// Local Variables: //
62// tab-width: 4 //
63// mode: c++ //
64// compile-command: "make install" //
65// End: //
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