source: src/ResolvExpr/ConversionCost.h

Last change on this file was e6b42e7, checked in by Andrew Beach <ajbeach@…>, 16 months ago

Added the ast::Pass::read utility. Converted two passes to use its two different uses.

  • Property mode set to 100644
File size: 4.4 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// ConversionCost.h --
8//
9// Author           : Richard C. Bilson
10// Created On       : Sun May 17 09:37:28 2015
11// Last Modified By : Andrew Beach
12// Last Modified On : Wed Jul 29 16:12:00 2020
13// Update Count     : 7
14//
15
16#pragma once
17
18#include <functional>         // for function
19
20#include "Cost.h"             // for Cost
21
22#include "AST/Fwd.hpp"
23#include "AST/Pass.hpp"       // for WithShortCircuiting
24#include "Common/PassVisitor.h"
25#include "SynTree/Visitor.h"  // for Visitor
26#include "SynTree/SynTree.h"  // for Visitor Nodes
27
28namespace SymTab {
29        class Indexer;
30}  // namespace SymTab
31
32namespace ResolvExpr {
33        class TypeEnvironment;
34
35        typedef std::function<Cost(const Type *, const Type *, bool,
36                const SymTab::Indexer &, const TypeEnvironment &)> CostFunction;
37
38        struct ConversionCost : public WithShortCircuiting {
39          public:
40                ConversionCost( const Type * dest, bool srcIsLvalue,
41                        const SymTab::Indexer &indexer, const TypeEnvironment &env, CostFunction );
42
43                Cost get_cost() const { return cost; }
44
45                void previsit( const BaseSyntaxNode * ) { visit_children = false; }
46
47                void postvisit( const VoidType * voidType );
48                void postvisit( const BasicType * basicType );
49                void postvisit( const PointerType * pointerType );
50                void postvisit( const ArrayType * arrayType );
51                void postvisit( const ReferenceType * refType );
52                void postvisit( const FunctionType * functionType );
53                void postvisit( const EnumInstType * aggregateUseType );
54                void postvisit( const TraitInstType * aggregateUseType );
55                void postvisit( const TypeInstType * aggregateUseType );
56                void postvisit( const TupleType * tupleType );
57                void postvisit( const VarArgsType * varArgsType );
58                void postvisit( const ZeroType * zeroType );
59                void postvisit( const OneType * oneType );
60          protected:
61                const Type * dest;
62                bool srcIsLvalue;
63                const SymTab::Indexer &indexer;
64                Cost cost;
65                const TypeEnvironment &env;
66                CostFunction costFunc;
67        };
68
69        typedef std::function<int(const Type *, const Type *, const SymTab::Indexer &, const TypeEnvironment &)> PtrsFunction;
70        Cost convertToReferenceCost( const Type * src, const ReferenceType * dest, bool srcIsLvalue,
71                const SymTab::Indexer & indexer, const TypeEnvironment & env, PtrsFunction func );
72
73// Some function pointer types, differ in return type.
74using CostCalculation = std::function<Cost(const ast::Type *, const ast::Type *, bool,
75        const ast::SymbolTable &, const ast::TypeEnvironment &)>;
76using PtrsCalculation = std::function<int(const ast::Type *, const ast::Type *,
77        const ast::SymbolTable &, const ast::TypeEnvironment &)>;
78
79#warning when the old ConversionCost is removed, get ride of the _new suffix.
80class ConversionCost_new : public ast::WithShortCircuiting {
81protected:
82        const ast::Type * dst;
83        bool srcIsLvalue;
84        const ast::SymbolTable & symtab;
85        const ast::TypeEnvironment & env;
86        CostCalculation costCalc;
87public:
88        static size_t traceId;
89        Cost cost;
90        Cost result() { return cost; }
91
92        ConversionCost_new( const ast::Type * dst, bool srcIsLvalue, const ast::SymbolTable & symtab,
93                        const ast::TypeEnvironment & env, CostCalculation costCalc ) :
94                dst( dst ), srcIsLvalue( srcIsLvalue ), symtab( symtab ), env( env ),
95                costCalc( costCalc ), cost( Cost::infinity )
96        {}
97
98        void previsit( const ast::Node * ) { visit_children = false; }
99
100        void postvisit( const ast::VoidType * voidType );
101        void postvisit( const ast::BasicType * basicType );
102        void postvisit( const ast::PointerType * pointerType );
103        void postvisit( const ast::ArrayType * arrayType );
104        void postvisit( const ast::ReferenceType * refType );
105        void postvisit( const ast::FunctionType * functionType );
106        void postvisit( const ast::EnumInstType * enumInstType );
107        void postvisit( const ast::TraitInstType * traitInstType );
108        void postvisit( const ast::TypeInstType * typeInstType );
109        void postvisit( const ast::TupleType * tupleType );
110        void postvisit( const ast::VarArgsType * varArgsType );
111        void postvisit( const ast::ZeroType * zeroType );
112        void postvisit( const ast::OneType * oneType );
113};
114
115Cost convertToReferenceCost( const ast::Type * src, const ast::ReferenceType * dest,
116        bool srcIsLvalue, const ast::SymbolTable & indexer, const ast::TypeEnvironment & env,
117        PtrsCalculation func );
118
119} // namespace ResolvExpr
120
121// Local Variables: //
122// tab-width: 4 //
123// mode: c++ //
124// compile-command: "make install" //
125// End: //
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