| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // Type.hpp --
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| 8 | //
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| 9 | // Author : Aaron B. Moss
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| 10 | // Created On : Thu May 9 10:00:00 2019
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| 11 | // Last Modified By : Andrew Beach
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| 12 | // Last Modified On : Thu Apr 6 15:58:00 2023
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| 13 | // Update Count : 9
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| 14 | //
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| 15 |
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| 16 | #pragma once
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| 17 |
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| 18 | #include <cassert>
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| 19 | #include <cstddef> // for nullptr_t
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| 20 | #include <cstdint> // for uintptr_t
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| 21 | #include <utility> // for move
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| 22 | #include <vector>
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| 23 |
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| 24 | #include "CVQualifiers.hpp"
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| 25 | #include "Decl.hpp" // for AggregateDecl subclasses
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| 26 | #include "Fwd.hpp"
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| 27 | #include "Node.hpp" // for Node, ptr, ptr_base
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| 28 | #include "Visitor.hpp"
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| 29 |
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| 30 | // Must be included in *all* AST classes; should be #undef'd at the end of the file
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| 31 | #define MUTATE_FRIEND \
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| 32 | template<typename node_t> friend node_t * mutate(const node_t * node); \
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| 33 | template<typename node_t> friend node_t * shallowCopy(const node_t * node);
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| 34 |
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| 35 | namespace ast {
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| 36 |
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| 37 | template< typename T > class Pass;
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| 38 |
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| 39 | class Type : public Node {
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| 40 | public:
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| 41 | CV::Qualifiers qualifiers;
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| 42 | std::vector<ptr<Attribute>> attributes;
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| 43 |
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| 44 | Type( CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 45 | : qualifiers(q), attributes(std::move(as)) {}
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| 46 |
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| 47 | bool is_const() const { return qualifiers.is_const; }
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| 48 | bool is_volatile() const { return qualifiers.is_volatile; }
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| 49 | bool is_restrict() const { return qualifiers.is_restrict; }
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| 50 | bool is_mutex() const { return qualifiers.is_mutex; }
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| 51 | bool is_atomic() const { return qualifiers.is_atomic; }
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| 52 |
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| 53 | Type * set_const( bool v ) { qualifiers.is_const = v; return this; }
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| 54 | Type * set_volatile( bool v ) { qualifiers.is_volatile = v; return this; }
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| 55 | Type * set_restrict( bool v ) { qualifiers.is_restrict = v; return this; }
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| 56 | Type * set_mutex( bool v ) { qualifiers.is_mutex = v; return this; }
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| 57 | Type * set_atomic( bool v ) { qualifiers.is_atomic = v; return this; }
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| 58 |
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| 59 | /// How many elemental types are represented by this type
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| 60 | virtual unsigned size() const { return 1; }
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| 61 | /// Is this a void type?
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| 62 | virtual bool isVoid() const { return size() == 0; }
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| 63 | /// Get the i'th component of this type
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| 64 | virtual const Type * getComponent( unsigned i ) const;
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| 65 |
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| 66 | /// type without outer pointers and arrays
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| 67 | const Type * stripDeclarator() const;
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| 68 | /// type without outer references
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| 69 | const Type * stripReferences() const;
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| 70 | /// number of reference occuring consecutively on the outermost layer of this type
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| 71 | /// (i.e. do not count references nested within other types)
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| 72 | virtual unsigned referenceDepth() const { return 0; }
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| 73 | /// true iff type is complete type (i.e. compiler knows the size, alignment, and layout)
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| 74 | virtual bool isComplete() const { return true; }
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| 75 |
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| 76 | virtual const Type * accept( Visitor & v ) const override = 0;
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| 77 | private:
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| 78 | virtual Type * clone() const override = 0;
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| 79 | MUTATE_FRIEND
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| 80 | };
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| 81 |
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| 82 | /// Clear/reset the qualifiers on this type, cloning only if necessary
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| 83 | template< enum Node::ref_type ref_t >
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| 84 | void reset_qualifiers( ptr_base< Type, ref_t > & p, CV::Qualifiers q = {} ) {
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| 85 | if ( p->qualifiers != q ) p.get_and_mutate()->qualifiers = q;
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| 86 | }
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| 87 |
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| 88 | /// Add the specified qualifiers to this type, cloning only if necessary
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| 89 | template< enum Node::ref_type ref_t >
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| 90 | void add_qualifiers( ptr_base< Type, ref_t > & p, CV::Qualifiers q ) {
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| 91 | if ( ( p->qualifiers & q ) != q ) p.get_and_mutate()->qualifiers |= q;
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| 92 | }
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| 93 |
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| 94 | /// Remove the specified qualifiers from this type, cloning only if necessary
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| 95 | template< enum Node::ref_type ref_t >
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| 96 | void remove_qualifiers( ptr_base< Type, ref_t > & p, CV::Qualifiers q ) {
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| 97 | if ( ( p->qualifiers & q ) != 0 ) p.get_and_mutate()->qualifiers -= q;
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| 98 | }
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| 99 |
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| 100 | /// `void`
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| 101 | class VoidType final : public Type {
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| 102 | public:
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| 103 | VoidType( CV::Qualifiers q = {} ) : Type( q ) {}
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| 104 |
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| 105 | unsigned size() const override { return 0; }
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| 106 | bool isVoid() const override { return true; }
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| 107 | bool isComplete() const override { return false; }
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| 108 |
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| 109 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 110 | private:
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| 111 | VoidType * clone() const override { return new VoidType{ *this }; }
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| 112 | MUTATE_FRIEND
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| 113 | };
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| 114 |
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| 115 | /// Built-in arithmetic type
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| 116 | class BasicType final : public Type {
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| 117 | public:
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| 118 | // GENERATED START, DO NOT EDIT
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| 119 | // GENERATED BY BasicTypes-gen.cc
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| 120 | enum Kind {
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| 121 | Bool,
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| 122 | Char,
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| 123 | SignedChar,
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| 124 | UnsignedChar,
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| 125 | ShortSignedInt,
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| 126 | ShortUnsignedInt,
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| 127 | SignedInt,
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| 128 | UnsignedInt,
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| 129 | LongSignedInt,
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| 130 | LongUnsignedInt,
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| 131 | LongLongSignedInt,
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| 132 | LongLongUnsignedInt,
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| 133 | SignedInt128,
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| 134 | UnsignedInt128,
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| 135 | uFloat16,
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| 136 | uFloat16Complex,
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| 137 | uFloat32,
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| 138 | uFloat32Complex,
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| 139 | Float,
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| 140 | FloatComplex,
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| 141 | uFloat32x,
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| 142 | uFloat32xComplex,
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| 143 | uFloat64,
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| 144 | uFloat64Complex,
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| 145 | Double,
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| 146 | DoubleComplex,
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| 147 | uFloat64x,
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| 148 | uFloat64xComplex,
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| 149 | uuFloat80,
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| 150 | uFloat128,
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| 151 | uFloat128Complex,
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| 152 | uuFloat128,
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| 153 | LongDouble,
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| 154 | LongDoubleComplex,
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| 155 | uFloat128x,
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| 156 | uFloat128xComplex,
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| 157 | NUMBER_OF_BASIC_TYPES
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| 158 | } kind;
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| 159 | // GENERATED END
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| 160 |
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| 161 | /// xxx -- MAX_INTEGER_TYPE should probably be in BasicTypes-gen.cc, rather than hardcoded here
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| 162 | enum { MAX_INTEGER_TYPE = UnsignedInt128 };
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| 163 |
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| 164 | /// string names of basic types; generated to match with Kind
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| 165 | static const char *typeNames[];
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| 166 |
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| 167 | BasicType( Kind k, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 168 | : Type(q, std::move(as)), kind(k) {}
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| 169 |
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| 170 | /// Check if this type represents an integer type
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| 171 | bool isInteger() const { return (unsigned)kind <= (unsigned)MAX_INTEGER_TYPE; }
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| 172 |
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| 173 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 174 | private:
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| 175 | BasicType * clone() const override { return new BasicType{ *this }; }
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| 176 | MUTATE_FRIEND
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| 177 | };
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| 178 |
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| 179 | /// Pointer/array variable length?
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| 180 | enum LengthFlag { FixedLen, VariableLen };
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| 181 |
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| 182 | /// Pointer/array static dimension?
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| 183 | enum DimensionFlag { DynamicDim, StaticDim };
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| 184 |
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| 185 | /// Pointer type `T*`
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| 186 | class PointerType final : public Type {
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| 187 | public:
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| 188 | ptr<Type> base;
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| 189 |
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| 190 | // In C99, pointer types can be qualified in many ways, e.g. `int a[ static 3 ]`
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| 191 | ptr<Expr> dimension;
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| 192 | LengthFlag isVarLen = FixedLen;
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| 193 | DimensionFlag isStatic = DynamicDim;
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| 194 |
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| 195 | PointerType( const Type * b, CV::Qualifiers q = {} ) : Type(q), base(b), dimension() {}
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| 196 | PointerType( const Type * b, const Expr * d, LengthFlag vl, DimensionFlag s,
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| 197 | CV::Qualifiers q = {} ) : Type(q), base(b), dimension(d), isVarLen(vl), isStatic(s) {}
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| 198 |
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| 199 | // true if this pointer is actually an array
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| 200 | bool isArray() const { return isVarLen || isStatic || dimension; }
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| 201 |
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| 202 | bool isComplete() const override { return ! isVarLen; }
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| 203 |
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| 204 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 205 | private:
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| 206 | PointerType * clone() const override { return new PointerType{ *this }; }
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| 207 | MUTATE_FRIEND
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| 208 | };
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| 209 |
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| 210 | /// Array type `T[]`
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| 211 | class ArrayType final : public Type {
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| 212 | public:
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| 213 | ptr<Type> base;
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| 214 | ptr<Expr> dimension;
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| 215 | LengthFlag isVarLen;
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| 216 | DimensionFlag isStatic;
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| 217 |
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| 218 | ArrayType( const Type * b, const Expr * d, LengthFlag vl, DimensionFlag s,
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| 219 | CV::Qualifiers q = {} ) : Type(q), base(b), dimension(d), isVarLen(vl), isStatic(s) {}
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| 220 |
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| 221 | // array types are complete if they have a dimension expression or are
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| 222 | // VLAs ('*' in parameter declaration), and incomplete otherwise.
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| 223 | // See 6.7.6.2
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| 224 | bool isComplete() const override { return dimension || isVarLen; }
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| 225 |
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| 226 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 227 | private:
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| 228 | ArrayType * clone() const override { return new ArrayType{ *this }; }
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| 229 | MUTATE_FRIEND
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| 230 | };
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| 231 |
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| 232 | /// Reference type `T&`
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| 233 | class ReferenceType final : public Type {
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| 234 | public:
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| 235 | ptr<Type> base;
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| 236 |
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| 237 | ReferenceType( const Type * b, CV::Qualifiers q = {} ) : Type(q), base(b) {}
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| 238 |
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| 239 | unsigned referenceDepth() const override { return base->referenceDepth() + 1; }
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| 240 |
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| 241 | // Since reference types act like value types, their size is the size of the base.
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| 242 | // This makes it simple to cast the empty tuple to a reference type, since casts that increase
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| 243 | // the number of values are disallowed.
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| 244 | unsigned size() const override { return base->size(); }
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| 245 |
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| 246 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 247 | private:
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| 248 | ReferenceType * clone() const override { return new ReferenceType{ *this }; }
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| 249 | MUTATE_FRIEND
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| 250 | };
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| 251 |
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| 252 | /// Qualified type `P.C`
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| 253 | class QualifiedType final : public Type {
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| 254 | public:
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| 255 | ptr<Type> parent;
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| 256 | ptr<Type> child;
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| 257 |
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| 258 | QualifiedType( const Type * p, const Type * c, CV::Qualifiers q = {} )
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| 259 | : Type(q), parent(p), child(c) {}
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| 260 |
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| 261 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 262 | private:
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| 263 | QualifiedType * clone() const override { return new QualifiedType{ *this }; }
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| 264 | MUTATE_FRIEND
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| 265 | };
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| 266 |
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| 267 | /// Type of a function `[R1, R2](*)(P1, P2, P3)`
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| 268 | class FunctionType final : public Type {
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| 269 | public:
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| 270 | using ForallList = std::vector<ptr<TypeInstType>>;
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| 271 | using AssertionList = std::vector<ptr<VariableExpr>>;
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| 272 | ForallList forall;
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| 273 | AssertionList assertions;
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| 274 |
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| 275 | std::vector<ptr<Type>> returns;
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| 276 | std::vector<ptr<Type>> params;
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| 277 |
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| 278 | /// Does the function accept a variable number of arguments following the arguments specified
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| 279 | /// in the parameters list.
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| 280 | /// This could be because of
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| 281 | /// - an ellipsis in a prototype declaration
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| 282 | /// - an unprototyped declaration
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| 283 | ArgumentFlag isVarArgs;
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| 284 |
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| 285 | FunctionType( ArgumentFlag va = FixedArgs, CV::Qualifiers q = {} )
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| 286 | : Type(q), returns(), params(), isVarArgs(va) {}
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| 287 |
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| 288 | FunctionType( const FunctionType & o ) = default;
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| 289 |
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| 290 | /// true if either the parameters or return values contain a tttype
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| 291 | bool isTtype() const;
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| 292 | /// true if function parameters are unconstrained by prototype
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| 293 | bool isUnprototyped() const { return isVarArgs && params.size() == 0; }
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| 294 |
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| 295 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 296 | private:
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| 297 | FunctionType * clone() const override { return new FunctionType{ *this }; }
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| 298 | MUTATE_FRIEND
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| 299 | };
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| 300 |
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| 301 | /// base class for types that refer to types declared elsewhere (aggregates and typedefs)
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| 302 | class BaseInstType : public Type {
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| 303 | public:
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| 304 | std::vector<ptr<Expr>> params;
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| 305 | std::string name;
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| 306 | bool hoistType = false;
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| 307 |
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| 308 | BaseInstType(
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| 309 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 310 | : Type(q, std::move(as)), params(), name(n) {}
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| 311 |
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| 312 | BaseInstType(
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| 313 | const std::string& n, std::vector<ptr<Expr>> && params,
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| 314 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 315 | : Type(q, std::move(as)), params(std::move(params)), name(n) {}
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| 316 |
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| 317 | BaseInstType( const BaseInstType & o ) = default;
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| 318 |
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| 319 | /// Gets aggregate declaration this type refers to
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| 320 | virtual const AggregateDecl * aggr() const = 0;
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| 321 | /// Looks up member declarations with given name
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| 322 | std::vector<readonly<Decl>> lookup( const std::string & name ) const;
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| 323 |
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| 324 | private:
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| 325 | virtual BaseInstType * clone() const override = 0;
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| 326 | MUTATE_FRIEND
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| 327 | };
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| 328 |
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| 329 | // Common implementation for the SUE instance types. Not to be used directly.
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| 330 | template<typename decl_t>
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| 331 | class SueInstType final : public BaseInstType {
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| 332 | public:
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| 333 | using base_type = decl_t;
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| 334 | readonly<decl_t> base;
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| 335 |
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| 336 | SueInstType(
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| 337 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 338 | : BaseInstType( n, q, std::move(as) ), base() {}
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| 339 |
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| 340 | SueInstType(
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| 341 | const base_type * b, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} );
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| 342 |
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| 343 | SueInstType(
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| 344 | const base_type * b, std::vector<ptr<Expr>> && params,
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| 345 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} );
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| 346 |
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| 347 | bool isComplete() const override;
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| 348 |
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| 349 | const decl_t * aggr() const override { return base; }
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| 350 |
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| 351 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 352 | private:
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| 353 | SueInstType<decl_t> * clone() const override { return new SueInstType<decl_t>{ *this }; }
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| 354 | MUTATE_FRIEND
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| 355 | };
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| 356 |
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| 357 | /// An instance of a struct type.
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| 358 | using StructInstType = SueInstType<StructDecl>;
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| 359 |
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| 360 | /// An instance of a union type.
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| 361 | using UnionInstType = SueInstType<UnionDecl>;
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| 362 |
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| 363 | /// An instance of an enum type.
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| 364 | using EnumInstType = SueInstType<EnumDecl>;
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| 365 |
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| 366 | /// An instance of a trait type.
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| 367 | class TraitInstType final : public BaseInstType {
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| 368 | public:
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| 369 | readonly<TraitDecl> base;
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| 370 |
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| 371 | TraitInstType(
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| 372 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} )
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| 373 | : BaseInstType( n, q, std::move(as) ), base() {}
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| 374 |
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| 375 | TraitInstType(
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| 376 | const TraitDecl * b, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} );
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| 377 |
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| 378 | // not meaningful for TraitInstType
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| 379 | bool isComplete() const override { assert(false); }
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| 380 |
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| 381 | const TraitDecl * aggr() const override { return base; }
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| 382 |
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| 383 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 384 | private:
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| 385 | TraitInstType * clone() const override { return new TraitInstType{ *this }; }
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| 386 | MUTATE_FRIEND
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| 387 | };
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| 388 |
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| 389 | struct TypeEnvKey;
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| 390 |
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| 391 | /// instance of named type alias (typedef or variable)
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| 392 | class TypeInstType final : public BaseInstType {
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| 393 | public:
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| 394 | readonly<TypeDecl> base;
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| 395 | // previously from renameTyVars; now directly use integer fields instead of synthesized strings
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| 396 | // a nonzero value of formal_usage indicates a formal type (only used in function type)
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| 397 | // a zero value of formal_usage indicates an actual type (referenced inside body of parametric structs and functions)
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| 398 | TypeDecl::Kind kind;
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| 399 | int formal_usage = 0;
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| 400 | int expr_id = 0;
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| 401 |
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| 402 | bool operator==(const TypeInstType & other) const;
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| 403 |
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| 404 | TypeInstType(
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| 405 | const std::string& n, const TypeDecl * b, CV::Qualifiers q = {},
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| 406 | std::vector<ptr<Attribute>> && as = {} )
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| 407 | : BaseInstType( n, q, std::move(as) ), base( b ), kind( b->kind ) {}
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| 408 |
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| 409 | TypeInstType( const TypeDecl * b,
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| 410 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} );
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| 411 |
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| 412 | TypeInstType( const std::string& n, TypeDecl::Kind k, CV::Qualifiers q = {},
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| 413 | std::vector<ptr<Attribute>> && as = {} )
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| 414 | : BaseInstType( n, q, std::move(as) ), base(), kind( k ) {}
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| 415 |
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| 416 | TypeInstType( const TypeInstType & o ) = default;
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| 417 |
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| 418 | TypeInstType( const TypeEnvKey & key );
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| 419 |
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| 420 | /// sets `base`, updating `kind` correctly
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| 421 | void set_base( const TypeDecl * );
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| 422 |
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| 423 | bool isComplete() const override;
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| 424 |
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| 425 | // not meaningful for TypeInstType
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| 426 | const AggregateDecl * aggr() const override { assert(false); }
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| 427 |
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| 428 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
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| 429 |
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| 430 | std::string typeString() const {
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| 431 | if (formal_usage > 0) return std::string("_") + std::to_string(formal_usage) + "_" + std::to_string(expr_id) + "_" + name;
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| 432 | else return name;
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| 433 | }
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| 434 | private:
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| 435 | TypeInstType * clone() const override { return new TypeInstType{ *this }; }
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| 436 | MUTATE_FRIEND
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| 437 | };
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| 438 |
|
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| 439 | /// Compact representation of TypeInstType used for map lookups.
|
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| 440 | struct TypeEnvKey {
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| 441 | const TypeDecl * base = nullptr;
|
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| 442 | int formal_usage = 0;
|
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| 443 | int expr_id = 0;
|
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| 444 |
|
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| 445 | TypeEnvKey() = default;
|
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| 446 | TypeEnvKey(const TypeDecl * base, int formal_usage = 0, int expr_id = 0)
|
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| 447 | : base(base), formal_usage(formal_usage), expr_id(expr_id) {}
|
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| 448 | TypeEnvKey(const TypeInstType & inst)
|
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| 449 | : base(inst.base), formal_usage(inst.formal_usage), expr_id(inst.expr_id) {}
|
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| 450 | std::string typeString() const;
|
|---|
| 451 | bool operator==(const TypeEnvKey & other) const;
|
|---|
| 452 | bool operator<(const TypeEnvKey & other) const;
|
|---|
| 453 | operator bool() {return base;}
|
|---|
| 454 | };
|
|---|
| 455 |
|
|---|
| 456 |
|
|---|
| 457 | /// tuple type e.g. `[int, char]`
|
|---|
| 458 | class TupleType final : public Type {
|
|---|
| 459 | public:
|
|---|
| 460 | std::vector<ptr<Type>> types;
|
|---|
| 461 |
|
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| 462 | TupleType( std::vector<ptr<Type>> && ts, CV::Qualifiers q = {} );
|
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| 463 |
|
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| 464 | // collection simulation
|
|---|
| 465 | using iterator = std::vector<ptr<Type>>::const_iterator;
|
|---|
| 466 | iterator begin() const { return types.begin(); }
|
|---|
| 467 | iterator end() const { return types.end(); }
|
|---|
| 468 |
|
|---|
| 469 | unsigned size() const override { return types.size(); }
|
|---|
| 470 |
|
|---|
| 471 | const Type * getComponent( unsigned i ) const override {
|
|---|
| 472 | assertf( i < size(), "TupleType::getComponent: index %d must be less than size %d",
|
|---|
| 473 | i, size() );
|
|---|
| 474 | return *(begin()+i);
|
|---|
| 475 | }
|
|---|
| 476 |
|
|---|
| 477 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 478 | private:
|
|---|
| 479 | TupleType * clone() const override { return new TupleType{ *this }; }
|
|---|
| 480 | MUTATE_FRIEND
|
|---|
| 481 | };
|
|---|
| 482 |
|
|---|
| 483 | /// Type of unresolved `typeof()` expression
|
|---|
| 484 | class TypeofType : public Type {
|
|---|
| 485 | public:
|
|---|
| 486 | ptr<Expr> expr;
|
|---|
| 487 | enum Kind { Typeof, Basetypeof } kind;
|
|---|
| 488 |
|
|---|
| 489 | TypeofType( const Expr * e, Kind k = Typeof, CV::Qualifiers q = {} )
|
|---|
| 490 | : Type(q), expr(e), kind(k) {}
|
|---|
| 491 |
|
|---|
| 492 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 493 | private:
|
|---|
| 494 | TypeofType * clone() const override { return new TypeofType{ *this }; }
|
|---|
| 495 | MUTATE_FRIEND
|
|---|
| 496 | };
|
|---|
| 497 |
|
|---|
| 498 | /// Virtual Table Type `vtable(T)`
|
|---|
| 499 | class VTableType final : public Type {
|
|---|
| 500 | public:
|
|---|
| 501 | ptr<Type> base;
|
|---|
| 502 |
|
|---|
| 503 | VTableType( const Type * b, CV::Qualifiers q = {} ) : Type(q), base(b) {}
|
|---|
| 504 |
|
|---|
| 505 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 506 | private:
|
|---|
| 507 | VTableType * clone() const override { return new VTableType{ *this }; }
|
|---|
| 508 | MUTATE_FRIEND
|
|---|
| 509 | };
|
|---|
| 510 |
|
|---|
| 511 | /// GCC built-in varargs type
|
|---|
| 512 | class VarArgsType final : public Type {
|
|---|
| 513 | public:
|
|---|
| 514 | VarArgsType( CV::Qualifiers q = {} ) : Type( q ) {}
|
|---|
| 515 |
|
|---|
| 516 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 517 | private:
|
|---|
| 518 | VarArgsType * clone() const override { return new VarArgsType{ *this }; }
|
|---|
| 519 | MUTATE_FRIEND
|
|---|
| 520 | };
|
|---|
| 521 |
|
|---|
| 522 | /// Type of zero constant `0`
|
|---|
| 523 | class ZeroType final : public Type {
|
|---|
| 524 | public:
|
|---|
| 525 | ZeroType( CV::Qualifiers q = {} ) : Type( q ) {}
|
|---|
| 526 |
|
|---|
| 527 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 528 | private:
|
|---|
| 529 | ZeroType * clone() const override { return new ZeroType{ *this }; }
|
|---|
| 530 | MUTATE_FRIEND
|
|---|
| 531 | };
|
|---|
| 532 |
|
|---|
| 533 | /// Type of one constant `1`
|
|---|
| 534 | class OneType final : public Type {
|
|---|
| 535 | public:
|
|---|
| 536 | OneType( CV::Qualifiers q = {} ) : Type( q ) {}
|
|---|
| 537 |
|
|---|
| 538 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 539 | private:
|
|---|
| 540 | OneType * clone() const override { return new OneType{ *this }; }
|
|---|
| 541 | MUTATE_FRIEND
|
|---|
| 542 | };
|
|---|
| 543 |
|
|---|
| 544 | /// Parent type for scope-qualified types at global scope
|
|---|
| 545 | class GlobalScopeType final : public Type {
|
|---|
| 546 | public:
|
|---|
| 547 | GlobalScopeType() : Type() {}
|
|---|
| 548 |
|
|---|
| 549 | const Type * accept( Visitor & v ) const override { return v.visit( this ); }
|
|---|
| 550 | private:
|
|---|
| 551 | GlobalScopeType * clone() const override { return new GlobalScopeType{ *this }; }
|
|---|
| 552 | MUTATE_FRIEND
|
|---|
| 553 | };
|
|---|
| 554 |
|
|---|
| 555 | bool isUnboundType(const Type * type);
|
|---|
| 556 |
|
|---|
| 557 | }
|
|---|
| 558 |
|
|---|
| 559 | namespace std {
|
|---|
| 560 | template<>
|
|---|
| 561 | struct hash<typename ast::TypeEnvKey> {
|
|---|
| 562 | size_t operator() (const ast::TypeEnvKey & x) const {
|
|---|
| 563 | const size_t p = 1000007;
|
|---|
| 564 | size_t res = reinterpret_cast<size_t>(x.base);
|
|---|
| 565 | res = p * res + x.formal_usage;
|
|---|
| 566 | res = p * res + x.expr_id;
|
|---|
| 567 | return res;
|
|---|
| 568 | }
|
|---|
| 569 | };
|
|---|
| 570 | }
|
|---|
| 571 |
|
|---|
| 572 | #undef MUTATE_FRIEND
|
|---|
| 573 |
|
|---|
| 574 | // Local Variables: //
|
|---|
| 575 | // tab-width: 4 //
|
|---|
| 576 | // mode: c++ //
|
|---|
| 577 | // compile-command: "make install" //
|
|---|
| 578 | // End: //
|
|---|
