[2bb4a01] | 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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[923d25a] | 11 | // Last Modified By : Andrew Beach |
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[93c10de] | 12 | // Last Modified On : Thu Nov 24 9:47:00 2022 |
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| 13 | // Update Count : 8 |
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[2bb4a01] | 14 | // |
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| 15 | |
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| 16 | #pragma once |
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| 17 | |
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[9e1d485] | 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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[9b4f329] | 25 | #include "Decl.hpp" // for AggregateDecl subclasses |
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[9e1d485] | 26 | #include "Fwd.hpp" |
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[d76c588] | 27 | #include "Node.hpp" // for Node, ptr, ptr_base |
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[9e1d485] | 28 | #include "Visitor.hpp" |
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[2bb4a01] | 29 | |
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[f3cc5b6] | 30 | // Must be included in *all* AST classes; should be #undef'd at the end of the file |
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[99da267] | 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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[f3cc5b6] | 34 | |
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[2bb4a01] | 35 | namespace ast { |
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| 36 | |
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[e0e9a0b] | 37 | template< typename T > class Pass; |
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[f53acdf8] | 38 | |
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[2bb4a01] | 39 | class Type : public Node { |
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[9e1d485] | 40 | public: |
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[54e41b3] | 41 | CV::Qualifiers qualifiers; |
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[c829320] | 42 | std::vector<ptr<Attribute>> attributes; |
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[87701b6] | 43 | |
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[1ae47de] | 44 | Type( CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[c829320] | 45 | : qualifiers(q), attributes(std::move(as)) {} |
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[54e41b3] | 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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[76ed81f] | 53 | Type * set_const( bool v ) { qualifiers.is_const = v; return this; } |
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[dafe9e1] | 54 | Type * set_volatile( bool v ) { qualifiers.is_volatile = v; return this; } |
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[76ed81f] | 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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[9e1d485] | 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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[d76c588] | 64 | virtual const Type * getComponent( unsigned i ) const; |
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[9e1d485] | 65 | |
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| 66 | /// type without outer pointers and arrays |
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[d76c588] | 67 | const Type * stripDeclarator() const; |
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[9e1d485] | 68 | /// type without outer references |
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[d76c588] | 69 | const Type * stripReferences() const; |
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[9e1d485] | 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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[69bafd2] | 76 | virtual const Type * accept( Visitor & v ) const override = 0; |
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[9e1d485] | 77 | private: |
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| 78 | virtual Type * clone() const override = 0; |
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[f3cc5b6] | 79 | MUTATE_FRIEND |
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[9e1d485] | 80 | }; |
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| 81 | |
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[ee574a2] | 82 | /// Clear/reset the qualifiers on this type, cloning only if necessary |
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[d76c588] | 83 | template< enum Node::ref_type ref_t > |
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[ee574a2] | 84 | void reset_qualifiers( ptr_base< Type, ref_t > & p, CV::Qualifiers q = {} ) { |
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[3606fe4] | 85 | if ( p->qualifiers != q ) p.get_and_mutate()->qualifiers = q; |
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[d76c588] | 86 | } |
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| 87 | |
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[ee574a2] | 88 | /// Add the specified qualifiers to this type, cloning only if necessary |
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[d76c588] | 89 | template< enum Node::ref_type ref_t > |
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[ee574a2] | 90 | void add_qualifiers( ptr_base< Type, ref_t > & p, CV::Qualifiers q ) { |
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[3606fe4] | 91 | if ( ( p->qualifiers & q ) != q ) p.get_and_mutate()->qualifiers |= q; |
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[ee574a2] | 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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[3606fe4] | 97 | if ( ( p->qualifiers & q ) != 0 ) p.get_and_mutate()->qualifiers -= q; |
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[d76c588] | 98 | } |
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| 99 | |
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[9e1d485] | 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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[87701b6] | 104 | |
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[9e1d485] | 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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[69bafd2] | 109 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 110 | private: |
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| 111 | VoidType * clone() const override { return new VoidType{ *this }; } |
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[f3cc5b6] | 112 | MUTATE_FRIEND |
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[9e1d485] | 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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[f53acdf8] | 167 | BasicType( Kind k, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[0f6a7752] | 168 | : Type(q, std::move(as)), kind(k) {} |
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[9e1d485] | 169 | |
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| 170 | /// Check if this type represents an integer type |
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[3648d98] | 171 | bool isInteger() const { return (unsigned)kind <= (unsigned)MAX_INTEGER_TYPE; } |
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[9e1d485] | 172 | |
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[69bafd2] | 173 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 174 | private: |
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| 175 | BasicType * clone() const override { return new BasicType{ *this }; } |
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[f3cc5b6] | 176 | MUTATE_FRIEND |
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[9e1d485] | 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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[87701b6] | 196 | PointerType( const Type * b, const Expr * d, LengthFlag vl, DimensionFlag s, |
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[9e1d485] | 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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[69bafd2] | 204 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 205 | private: |
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| 206 | PointerType * clone() const override { return new PointerType{ *this }; } |
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[f3cc5b6] | 207 | MUTATE_FRIEND |
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[9e1d485] | 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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[2bb4a01] | 217 | |
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[87701b6] | 218 | ArrayType( const Type * b, const Expr * d, LengthFlag vl, DimensionFlag s, |
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[9e1d485] | 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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[69bafd2] | 226 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 227 | private: |
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| 228 | ArrayType * clone() const override { return new ArrayType{ *this }; } |
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[f3cc5b6] | 229 | MUTATE_FRIEND |
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[9e1d485] | 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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[69bafd2] | 246 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 247 | private: |
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| 248 | ReferenceType * clone() const override { return new ReferenceType{ *this }; } |
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[f3cc5b6] | 249 | MUTATE_FRIEND |
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[2bb4a01] | 250 | }; |
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| 251 | |
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[9e1d485] | 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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[87701b6] | 258 | QualifiedType( const Type * p, const Type * c, CV::Qualifiers q = {} ) |
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[9e1d485] | 259 | : Type(q), parent(p), child(c) {} |
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| 260 | |
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[69bafd2] | 261 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 262 | private: |
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| 263 | QualifiedType * clone() const override { return new QualifiedType{ *this }; } |
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[f3cc5b6] | 264 | MUTATE_FRIEND |
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[9e1d485] | 265 | }; |
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| 266 | |
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| 267 | /// Function variable arguments flag |
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| 268 | enum ArgumentFlag { FixedArgs, VariableArgs }; |
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| 269 | |
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| 270 | /// Type of a function `[R1, R2](*)(P1, P2, P3)` |
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[361bf01] | 271 | class FunctionType final : public Type { |
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[9e1d485] | 272 | public: |
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[3e5dd913] | 273 | using ForallList = std::vector<ptr<TypeInstType>>; |
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| 274 | using AssertionList = std::vector<ptr<VariableExpr>>; |
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[361bf01] | 275 | ForallList forall; |
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[3e5dd913] | 276 | AssertionList assertions; |
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[361bf01] | 277 | |
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[954c954] | 278 | std::vector<ptr<Type>> returns; |
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| 279 | std::vector<ptr<Type>> params; |
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[9e1d485] | 280 | |
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[87701b6] | 281 | /// Does the function accept a variable number of arguments following the arguments specified |
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[9e1d485] | 282 | /// in the parameters list. |
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| 283 | /// This could be because of |
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| 284 | /// - an ellipsis in a prototype declaration |
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| 285 | /// - an unprototyped declaration |
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| 286 | ArgumentFlag isVarArgs; |
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| 287 | |
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| 288 | FunctionType( ArgumentFlag va = FixedArgs, CV::Qualifiers q = {} ) |
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[361bf01] | 289 | : Type(q), returns(), params(), isVarArgs(va) {} |
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[9e1d485] | 290 | |
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[3e5dd913] | 291 | FunctionType( const FunctionType & o ) = default; |
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[e0e9a0b] | 292 | |
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[9e1d485] | 293 | /// true if either the parameters or return values contain a tttype |
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| 294 | bool isTtype() const; |
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| 295 | /// true if function parameters are unconstrained by prototype |
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[54e41b3] | 296 | bool isUnprototyped() const { return isVarArgs && params.size() == 0; } |
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[9e1d485] | 297 | |
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[69bafd2] | 298 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 299 | private: |
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| 300 | FunctionType * clone() const override { return new FunctionType{ *this }; } |
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[f3cc5b6] | 301 | MUTATE_FRIEND |
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[9e1d485] | 302 | }; |
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| 303 | |
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| 304 | /// base class for types that refer to types declared elsewhere (aggregates and typedefs) |
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[361bf01] | 305 | class BaseInstType : public Type { |
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[9e1d485] | 306 | public: |
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[54e41b3] | 307 | std::vector<ptr<Expr>> params; |
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[9e1d485] | 308 | std::string name; |
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| 309 | bool hoistType = false; |
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| 310 | |
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[98e8b3b] | 311 | BaseInstType( |
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[e0e9a0b] | 312 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[361bf01] | 313 | : Type(q, std::move(as)), params(), name(n) {} |
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[9e1d485] | 314 | |
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[3aec25f] | 315 | BaseInstType( |
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| 316 | const std::string& n, std::vector<ptr<Expr>> && params, |
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| 317 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[361bf01] | 318 | : Type(q, std::move(as)), params(std::move(params)), name(n) {} |
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[3aec25f] | 319 | |
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[361bf01] | 320 | BaseInstType( const BaseInstType & o ) = default; |
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[e0e9a0b] | 321 | |
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[9e1d485] | 322 | /// Gets aggregate declaration this type refers to |
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| 323 | virtual const AggregateDecl * aggr() const = 0; |
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| 324 | /// Looks up member declarations with given name |
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| 325 | std::vector<readonly<Decl>> lookup( const std::string & name ) const; |
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| 326 | |
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| 327 | private: |
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[98e8b3b] | 328 | virtual BaseInstType * clone() const override = 0; |
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[f3cc5b6] | 329 | MUTATE_FRIEND |
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[9e1d485] | 330 | }; |
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| 331 | |
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[923d25a] | 332 | // Common implementation for the SUE instance types. Not to be used directly. |
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| 333 | template<typename decl_t> |
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[98e8b3b] | 334 | class SueInstType final : public BaseInstType { |
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[9e1d485] | 335 | public: |
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[923d25a] | 336 | using base_type = decl_t; |
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| 337 | readonly<decl_t> base; |
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[9e1d485] | 338 | |
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[923d25a] | 339 | SueInstType( |
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[e0e9a0b] | 340 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[98e8b3b] | 341 | : BaseInstType( n, q, std::move(as) ), base() {} |
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[e0e9a0b] | 342 | |
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[923d25a] | 343 | SueInstType( |
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[3aec25f] | 344 | const base_type * b, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ); |
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| 345 | |
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| 346 | SueInstType( |
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| 347 | const base_type * b, std::vector<ptr<Expr>> && params, |
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| 348 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ); |
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[87701b6] | 349 | |
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[9e1d485] | 350 | bool isComplete() const override; |
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| 351 | |
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[923d25a] | 352 | const decl_t * aggr() const override { return base; } |
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[9e1d485] | 353 | |
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[69bafd2] | 354 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 355 | private: |
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[923d25a] | 356 | SueInstType<decl_t> * clone() const override { return new SueInstType<decl_t>{ *this }; } |
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[f3cc5b6] | 357 | MUTATE_FRIEND |
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[9e1d485] | 358 | }; |
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| 359 | |
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[923d25a] | 360 | /// An instance of a struct type. |
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| 361 | using StructInstType = SueInstType<StructDecl>; |
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[9e1d485] | 362 | |
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[923d25a] | 363 | /// An instance of a union type. |
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| 364 | using UnionInstType = SueInstType<UnionDecl>; |
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[9e1d485] | 365 | |
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[923d25a] | 366 | /// An instance of an enum type. |
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| 367 | using EnumInstType = SueInstType<EnumDecl>; |
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[9e1d485] | 368 | |
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[923d25a] | 369 | /// An instance of a trait type. |
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[98e8b3b] | 370 | class TraitInstType final : public BaseInstType { |
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[9e1d485] | 371 | public: |
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| 372 | readonly<TraitDecl> base; |
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| 373 | |
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[f53acdf8] | 374 | TraitInstType( |
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[e0e9a0b] | 375 | const std::string& n, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ) |
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[98e8b3b] | 376 | : BaseInstType( n, q, std::move(as) ), base() {} |
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[f53acdf8] | 377 | |
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| 378 | TraitInstType( |
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[e0e9a0b] | 379 | const TraitDecl * b, CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ); |
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[87701b6] | 380 | |
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[9e1d485] | 381 | // not meaningful for TraitInstType |
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| 382 | bool isComplete() const override { assert(false); } |
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| 383 | |
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| 384 | const TraitDecl * aggr() const override { return base; } |
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| 385 | |
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[69bafd2] | 386 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 387 | private: |
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| 388 | TraitInstType * clone() const override { return new TraitInstType{ *this }; } |
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[f3cc5b6] | 389 | MUTATE_FRIEND |
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[9e1d485] | 390 | }; |
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| 391 | |
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[93c10de] | 392 | struct TypeEnvKey; |
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| 393 | |
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[9e1d485] | 394 | /// instance of named type alias (typedef or variable) |
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[98e8b3b] | 395 | class TypeInstType final : public BaseInstType { |
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[9e1d485] | 396 | public: |
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| 397 | readonly<TypeDecl> base; |
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[3e5dd913] | 398 | // previously from renameTyVars; now directly use integer fields instead of synthesized strings |
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| 399 | // a nonzero value of formal_usage indicates a formal type (only used in function type) |
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| 400 | // a zero value of formal_usage indicates an actual type (referenced inside body of parametric structs and functions) |
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[07de76b] | 401 | TypeDecl::Kind kind; |
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[c9f6983] | 402 | int formal_usage = 0; |
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| 403 | int expr_id = 0; |
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[3e5dd913] | 404 | |
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[63d1ebe] | 405 | bool operator==(const TypeInstType & other) const; |
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[9e1d485] | 406 | |
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[f53acdf8] | 407 | TypeInstType( |
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[e0e9a0b] | 408 | const std::string& n, const TypeDecl * b, CV::Qualifiers q = {}, |
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[9e1d485] | 409 | std::vector<ptr<Attribute>> && as = {} ) |
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[98e8b3b] | 410 | : BaseInstType( n, q, std::move(as) ), base( b ), kind( b->kind ) {} |
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[b230091] | 411 | |
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| 412 | TypeInstType( const TypeDecl * b, |
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| 413 | CV::Qualifiers q = {}, std::vector<ptr<Attribute>> && as = {} ); |
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| 414 | |
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[07de76b] | 415 | TypeInstType( const std::string& n, TypeDecl::Kind k, CV::Qualifiers q = {}, |
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[9e1d485] | 416 | std::vector<ptr<Attribute>> && as = {} ) |
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[98e8b3b] | 417 | : BaseInstType( n, q, std::move(as) ), base(), kind( k ) {} |
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[9e1d485] | 418 | |
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[361bf01] | 419 | TypeInstType( const TypeInstType & o ) = default; |
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[e0e9a0b] | 420 | |
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[93c10de] | 421 | TypeInstType( const TypeEnvKey & key ); |
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[3e5dd913] | 422 | |
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[9e1d485] | 423 | /// sets `base`, updating `kind` correctly |
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| 424 | void set_base( const TypeDecl * ); |
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| 425 | |
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| 426 | bool isComplete() const override; |
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| 427 | |
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| 428 | // not meaningful for TypeInstType |
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| 429 | const AggregateDecl * aggr() const override { assert(false); } |
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| 430 | |
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[69bafd2] | 431 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[3e5dd913] | 432 | |
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[bc179fd3] | 433 | std::string typeString() const { |
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| 434 | if (formal_usage > 0) return std::string("_") + std::to_string(formal_usage) + "_" + std::to_string(expr_id) + "_" + name; |
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[3e5dd913] | 435 | else return name; |
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| 436 | } |
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[9e1d485] | 437 | private: |
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| 438 | TypeInstType * clone() const override { return new TypeInstType{ *this }; } |
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[f3cc5b6] | 439 | MUTATE_FRIEND |
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[9e1d485] | 440 | }; |
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| 441 | |
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[93c10de] | 442 | /// Compact representation of TypeInstType used for map lookups. |
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| 443 | struct TypeEnvKey { |
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| 444 | const TypeDecl * base = nullptr; |
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| 445 | int formal_usage = 0; |
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| 446 | int expr_id = 0; |
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| 447 | |
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| 448 | TypeEnvKey() = default; |
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| 449 | TypeEnvKey(const TypeDecl * base, int formal_usage = 0, int expr_id = 0) |
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| 450 | : base(base), formal_usage(formal_usage), expr_id(expr_id) {} |
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| 451 | TypeEnvKey(const TypeInstType & inst) |
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| 452 | : base(inst.base), formal_usage(inst.formal_usage), expr_id(inst.expr_id) {} |
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| 453 | std::string typeString() const; |
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| 454 | bool operator==(const TypeEnvKey & other) const; |
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| 455 | bool operator<(const TypeEnvKey & other) const; |
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| 456 | }; |
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| 457 | |
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[9e1d485] | 458 | /// tuple type e.g. `[int, char]` |
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| 459 | class TupleType final : public Type { |
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| 460 | public: |
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| 461 | std::vector<ptr<Type>> types; |
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| 462 | std::vector<ptr<Decl>> members; |
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| 463 | |
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| 464 | TupleType( std::vector<ptr<Type>> && ts, CV::Qualifiers q = {} ); |
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| 465 | |
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| 466 | // collection simulation |
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| 467 | using iterator = std::vector<ptr<Type>>::const_iterator; |
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| 468 | iterator begin() const { return types.begin(); } |
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| 469 | iterator end() const { return types.end(); } |
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[87701b6] | 470 | |
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[9e1d485] | 471 | unsigned size() const override { return types.size(); } |
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| 472 | |
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[d76c588] | 473 | const Type * getComponent( unsigned i ) const override { |
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[87701b6] | 474 | assertf( i < size(), "TupleType::getComponent: index %d must be less than size %d", |
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[9e1d485] | 475 | i, size() ); |
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| 476 | return *(begin()+i); |
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| 477 | } |
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| 478 | |
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[69bafd2] | 479 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 480 | private: |
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| 481 | TupleType * clone() const override { return new TupleType{ *this }; } |
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[f3cc5b6] | 482 | MUTATE_FRIEND |
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[9e1d485] | 483 | }; |
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| 484 | |
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| 485 | /// Type of unresolved `typeof()` expression |
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| 486 | class TypeofType : public Type { |
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| 487 | public: |
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| 488 | ptr<Expr> expr; |
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| 489 | enum Kind { Typeof, Basetypeof } kind; |
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| 490 | |
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[87701b6] | 491 | TypeofType( const Expr * e, Kind k = Typeof, CV::Qualifiers q = {} ) |
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[9e1d485] | 492 | : Type(q), expr(e), kind(k) {} |
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| 493 | |
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[69bafd2] | 494 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 495 | private: |
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| 496 | TypeofType * clone() const override { return new TypeofType{ *this }; } |
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[f3cc5b6] | 497 | MUTATE_FRIEND |
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[9e1d485] | 498 | }; |
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| 499 | |
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[b238618] | 500 | /// Virtual Table Type `vtable(T)` |
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| 501 | class VTableType final : public Type { |
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| 502 | public: |
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| 503 | ptr<Type> base; |
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| 504 | |
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| 505 | VTableType( const Type * b, CV::Qualifiers q = {} ) : Type(q), base(b) {} |
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| 506 | |
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| 507 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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| 508 | private: |
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| 509 | VTableType * clone() const override { return new VTableType{ *this }; } |
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| 510 | MUTATE_FRIEND |
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| 511 | }; |
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| 512 | |
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[9e1d485] | 513 | /// GCC built-in varargs type |
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| 514 | class VarArgsType final : public Type { |
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| 515 | public: |
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| 516 | VarArgsType( CV::Qualifiers q = {} ) : Type( q ) {} |
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[87701b6] | 517 | |
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[69bafd2] | 518 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 519 | private: |
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| 520 | VarArgsType * clone() const override { return new VarArgsType{ *this }; } |
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[f3cc5b6] | 521 | MUTATE_FRIEND |
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[9e1d485] | 522 | }; |
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| 523 | |
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| 524 | /// Type of zero constant `0` |
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| 525 | class ZeroType final : public Type { |
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| 526 | public: |
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| 527 | ZeroType( CV::Qualifiers q = {} ) : Type( q ) {} |
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[87701b6] | 528 | |
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[69bafd2] | 529 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 530 | private: |
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[f3cc5b6] | 531 | ZeroType * clone() const override { return new ZeroType{ *this }; } |
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| 532 | MUTATE_FRIEND |
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[9e1d485] | 533 | }; |
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| 534 | |
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| 535 | /// Type of one constant `1` |
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| 536 | class OneType final : public Type { |
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| 537 | public: |
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| 538 | OneType( CV::Qualifiers q = {} ) : Type( q ) {} |
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| 539 | |
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[69bafd2] | 540 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 541 | private: |
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| 542 | OneType * clone() const override { return new OneType{ *this }; } |
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[f3cc5b6] | 543 | MUTATE_FRIEND |
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[9e1d485] | 544 | }; |
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| 545 | |
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| 546 | /// Parent type for scope-qualified types at global scope |
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| 547 | class GlobalScopeType final : public Type { |
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| 548 | public: |
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[746ae82] | 549 | GlobalScopeType() : Type() {} |
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[9e1d485] | 550 | |
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[69bafd2] | 551 | const Type * accept( Visitor & v ) const override { return v.visit( this ); } |
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[9e1d485] | 552 | private: |
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| 553 | GlobalScopeType * clone() const override { return new GlobalScopeType{ *this }; } |
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[f3cc5b6] | 554 | MUTATE_FRIEND |
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[9e1d485] | 555 | }; |
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[e0115286] | 556 | |
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[e5c3811] | 557 | bool isUnboundType(const Type * type); |
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| 558 | |
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[2bb4a01] | 559 | } |
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| 560 | |
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[3e5dd913] | 561 | namespace std { |
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| 562 | template<> |
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[93c10de] | 563 | struct hash<typename ast::TypeEnvKey> { |
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| 564 | size_t operator() (const ast::TypeEnvKey & x) const { |
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[3e5dd913] | 565 | const size_t p = 1000007; |
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| 566 | size_t res = reinterpret_cast<size_t>(x.base); |
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| 567 | res = p * res + x.formal_usage; |
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| 568 | res = p * res + x.expr_id; |
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| 569 | return res; |
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[bc179fd3] | 570 | } |
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[3e5dd913] | 571 | }; |
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| 572 | } |
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| 573 | |
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[f3cc5b6] | 574 | #undef MUTATE_FRIEND |
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| 575 | |
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[2bb4a01] | 576 | // Local Variables: // |
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| 577 | // tab-width: 4 // |
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| 578 | // mode: c++ // |
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| 579 | // compile-command: "make install" // |
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| 580 | // End: // |
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