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 | // Decl.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 : Aaron B. Moss |
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12 | // Last Modified On : Thu May 9 10:00:00 2019 |
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13 | // Update Count : 1 |
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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 <string> // for string, to_string |
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19 | #include <unordered_map> |
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20 | #include <vector> |
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21 | |
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22 | #include "FunctionSpec.hpp" |
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23 | #include "Fwd.hpp" // for UniqueId |
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24 | #include "LinkageSpec.hpp" |
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25 | #include "Node.hpp" // for ptr, readonly |
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26 | #include "ParseNode.hpp" |
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27 | #include "StorageClasses.hpp" |
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28 | #include "Type.hpp" // for Type, ptr<Type> |
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29 | #include "Visitor.hpp" |
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30 | #include "Parser/ParseNode.h" // for DeclarationNode::Aggregate |
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31 | |
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32 | namespace ast { |
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33 | |
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34 | class Attribute; |
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35 | class Expr; |
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36 | class Init; |
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37 | class TypeDecl; |
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38 | |
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39 | /// Base declaration class |
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40 | class Decl : public ParseNode { |
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41 | public: |
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42 | std::string name; |
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43 | Storage::Classes storage; |
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44 | Linkage::Spec linkage; |
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45 | UniqueId uniqueId = 0; |
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46 | bool extension = false; |
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47 | |
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48 | Decl( const CodeLocation& loc, const std::string& name, Storage::Classes storage, |
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49 | Linkage::Spec linkage ) |
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50 | : ParseNode( loc ), name( name ), storage( storage ), linkage( linkage ) {} |
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51 | |
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52 | Decl* set_extension( bool ex ) { extension = ex; return this; } |
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53 | |
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54 | /// Ensures this node has a unique ID |
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55 | void fixUniqueId(); |
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56 | /// Get canonical declaration for unique ID |
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57 | static readonly<Decl> fromId( UniqueId id ); |
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58 | |
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59 | virtual Decl* accept( Visitor& v ) override = 0; |
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60 | private: |
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61 | virtual Decl* clone() const override = 0; |
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62 | }; |
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63 | |
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64 | /// Typed declaration base class |
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65 | class DeclWithType : public Decl { |
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66 | public: |
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67 | /// Represents the type with all types and typedefs expanded. |
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68 | /// This field is generated by SymTab::Validate::Pass2 |
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69 | std::string mangleName; |
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70 | /// Stores the scope level at which the variable was declared. |
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71 | /// Used to access shadowed identifiers. |
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72 | int scopeLevel = 0; |
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73 | |
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74 | std::vector<ptr<Attribute>> attributes; |
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75 | Function::Specs funcSpec; |
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76 | ptr<Expr> asmName; |
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77 | bool isDeleted = false; |
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78 | |
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79 | DeclWithType( const CodeLocation& loc, const std::string& name, Storage::Classes storage, |
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80 | Linkage::Spec linkage, std::vector<ptr<Attribute>>&& attrs, Function::Specs fs ) |
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81 | : Decl( loc, name, storage, linkage ), mangleName(), attributes( std::move(attrs) ), |
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82 | funcSpec(fs), asmName() {} |
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83 | |
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84 | std::string scopedMangleName() const { return mangleName + "_" + std::to_string(scopeLevel); } |
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85 | |
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86 | /// Get type of this declaration. May be generated by subclass |
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87 | virtual const Type* get_type() const = 0; |
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88 | /// Set type of this declaration. May be verified by subclass |
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89 | virtual void set_type(Type*) = 0; |
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90 | |
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91 | virtual DeclWithType* accept( Visitor& v ) override = 0; |
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92 | private: |
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93 | virtual DeclWithType* clone() const override = 0; |
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94 | }; |
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95 | |
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96 | /// Object declaration `Foo foo = 42;` |
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97 | class ObjectDecl final : public DeclWithType { |
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98 | public: |
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99 | ptr<Type> type; |
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100 | ptr<Init> init; |
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101 | ptr<Expr> bitfieldWidth; |
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102 | |
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103 | ObjectDecl( const CodeLocation& loc, const std::string& name, Type* type, Init* init = nullptr, |
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104 | Storage::Classes storage = {}, Linkage::Spec linkage = Linkage::C, Expr* bitWd = nullptr, |
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105 | std::vector<ptr<Attribute>>&& attrs = {}, Function::Specs fs = {}) |
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106 | : DeclWithType( loc, name, storage, linkage, std::move(attrs), fs ), type( type ), |
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107 | init( init ), bitfieldWidth( bitWd ) {} |
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108 | |
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109 | const Type* get_type() const override { return type; } |
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110 | void set_type( Type* ty ) override { type = ty; } |
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111 | |
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112 | DeclWithType* accept( Visitor& v ) override { return v.visit( this ); } |
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113 | private: |
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114 | ObjectDecl* clone() const override { return new ObjectDecl{ *this }; } |
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115 | }; |
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116 | |
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117 | /// Aggregate type declaration base class |
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118 | class AggregateDecl : public Decl { |
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119 | public: |
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120 | std::vector<ptr<Decl>> members; |
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121 | std::vector<ptr<TypeDecl>> parameters; |
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122 | std::vector<ptr<Attribute>> attributes; |
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123 | bool body = false; |
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124 | readonly<AggregateDecl> parent = {}; |
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125 | |
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126 | AggregateDecl( const CodeLocation& loc, const std::string& name, |
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127 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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128 | : Decl( loc, name, Storage::Classes{}, linkage ), members(), parameters(), |
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129 | attributes( std::move(attrs) ) {} |
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130 | |
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131 | AggregateDecl* set_body( bool b ) { body = b; return this; } |
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132 | |
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133 | protected: |
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134 | /// Produces a name for the kind of aggregate |
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135 | virtual std::string typeString() const = 0; |
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136 | }; |
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137 | |
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138 | /// struct declaration `struct Foo { ... };` |
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139 | class StructDecl final : public AggregateDecl { |
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140 | public: |
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141 | DeclarationNode::Aggregate kind; |
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142 | |
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143 | StructDecl( const CodeLocation& loc, const std::string& name, |
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144 | DeclarationNode::Aggregate kind = DeclarationNode::Struct, |
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145 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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146 | : AggregateDecl( loc, name, std::move(attrs), linkage ), kind( kind ) {} |
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147 | |
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148 | bool is_coroutine() { return kind == DeclarationNode::Coroutine; } |
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149 | bool is_monitor() { return kind == DeclarationNode::Monitor; } |
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150 | bool is_thread() { return kind == DeclarationNode::Thread; } |
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151 | |
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152 | Decl* accept( Visitor& v ) override { return v.visit( this ); } |
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153 | private: |
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154 | StructDecl* clone() const override { return new StructDecl{ *this }; } |
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155 | |
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156 | std::string typeString() const override { return "struct"; } |
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157 | }; |
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158 | |
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159 | /// union declaration `union Foo { ... };` |
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160 | class UnionDecl final : public AggregateDecl { |
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161 | public: |
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162 | UnionDecl( const CodeLocation& loc, const std::string& name, |
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163 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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164 | : AggregateDecl( loc, name, std::move(attrs), linkage ) {} |
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165 | |
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166 | Decl* accept( Visitor& v ) override { return v.visit( this ); } |
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167 | private: |
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168 | UnionDecl* clone() const override { return new UnionDecl{ *this }; } |
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169 | |
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170 | std::string typeString() const override { return "union"; } |
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171 | }; |
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172 | |
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173 | /// enum declaration `enum Foo { ... };` |
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174 | class EnumDecl final : public AggregateDecl { |
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175 | public: |
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176 | EnumDecl( const CodeLocation& loc, const std::string& name, |
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177 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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178 | : AggregateDecl( loc, name, std::move(attrs), linkage ), enumValues() {} |
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179 | |
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180 | /// gets the integer value for this enumerator, returning true iff value found |
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181 | bool valueOf( Decl* enumerator, long long& value ) const; |
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182 | |
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183 | Decl* accept( Visitor& v ) override { return v.visit( this ); } |
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184 | private: |
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185 | EnumDecl* clone() const override { return new EnumDecl{ *this }; } |
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186 | |
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187 | std::string typeString() const override { return "enum"; } |
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188 | |
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189 | /// Map from names to enumerator values; kept private for lazy initialization |
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190 | mutable std::unordered_map< std::string, long long > enumValues; |
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191 | }; |
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192 | |
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193 | /// trait declaration `trait Foo( ... ) { ... };` |
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194 | class TraitDecl final : public AggregateDecl { |
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195 | public: |
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196 | TraitDecl( const CodeLocation& loc, const std::string& name, |
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197 | std::vector<ptr<Attribute>>&& attrs = {}, Linkage::Spec linkage = Linkage::Cforall ) |
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198 | : AggregateDecl( loc, name, std::move(attrs), linkage ) {} |
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199 | |
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200 | Decl* accept( Visitor& v ) override { return v.visit( this ); } |
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201 | private: |
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202 | TraitDecl* clone() const override { return new TraitDecl{ *this }; } |
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203 | |
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204 | std::string typeString() const override { return "trait"; } |
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205 | }; |
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206 | |
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207 | } |
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208 | |
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209 | // Local Variables: // |
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210 | // tab-width: 4 // |
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211 | // mode: c++ // |
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212 | // compile-command: "make install" // |
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213 | // End: // |
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