1 | #include "AST/Create.hpp" |
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2 | #include "AST/Pass.hpp" |
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3 | #include "AST/TranslationUnit.hpp" |
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4 | #include "CodeGen/OperatorTable.hpp" // for isCtorDtor, isCtorDtorAssign |
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5 | #include "InitTweak/InitTweak.hpp" // for isAssignment, isCopyConstructor |
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6 | namespace Validate { |
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7 | |
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8 | namespace { |
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9 | class EnumAttrFuncGenerator { |
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10 | const ast::EnumDecl* decl; |
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11 | const ast::EnumInstType* instType; |
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12 | unsigned int functionNesting; |
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13 | ast::Linkage::Spec proto_linkage; |
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14 | |
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15 | public: |
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16 | std::list<ast::ptr<ast::Decl>> forwards; |
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17 | std::list<ast::ptr<ast::Decl>> definitions; |
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18 | |
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19 | void generateAndAppendFunctions(std::list<ast::ptr<ast::Decl>>&); |
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20 | |
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21 | EnumAttrFuncGenerator( |
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22 | const ast::EnumDecl* decl, |
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23 | const ast::EnumInstType* instType, |
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24 | unsigned int functionNesting ) |
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25 | : decl(decl), |
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26 | instType{instType}, |
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27 | functionNesting{functionNesting}, |
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28 | proto_linkage{ast::Linkage::Cforall} {} |
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29 | |
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30 | private: |
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31 | const CodeLocation& getLocation() const { return decl->location; } |
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32 | |
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33 | ast::FunctionDecl* genProto( |
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34 | std::string&& name, std::vector<ast::ptr<ast::DeclWithType>>&& params, |
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35 | std::vector<ast::ptr<ast::DeclWithType>>&& returns) const; |
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36 | |
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37 | void produceDecl(const ast::FunctionDecl* decl); |
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38 | void produceForwardDecl(const ast::FunctionDecl* decl); |
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39 | |
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40 | const ast::Decl* getDecl() const { return decl; } |
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41 | |
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42 | // Implement Bounded trait |
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43 | void genBoundedFunctions(); |
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44 | ast::FunctionDecl* genBoundedProto(const char *) const; |
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45 | void genBoundedBody(ast::FunctionDecl* func) const; |
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46 | |
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47 | // Implement Serial trait |
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48 | void genSerialTraitFuncs(); |
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49 | ast::FunctionDecl* genFromIntProto() const; |
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50 | ast::FunctionDecl* genFromInstanceProto() const; |
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51 | ast::FunctionDecl* genInstToInstFuncProto(const char* func) const; |
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52 | void genFromIntBody(ast::FunctionDecl *) const; |
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53 | void genFromInstanceBody(ast::FunctionDecl *) const; |
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54 | void genSuccPredBody(ast::FunctionDecl *, const char *) const; |
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55 | |
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56 | // Implement TypedEnum trait |
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57 | void genTypedEnumFuncs(); |
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58 | void genTypedEnumFunction(const ast::EnumAttribute attr); |
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59 | ast::FunctionDecl* genPosnProto() const; |
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60 | ast::FunctionDecl* genLabelProto() const; |
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61 | ast::FunctionDecl* genValueProto() const; |
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62 | void genValueOrLabelBody( |
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63 | ast::FunctionDecl* func, ast::ObjectDecl* arrDecl) const; |
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64 | void genPosnBody(ast::FunctionDecl* func) const; |
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65 | |
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66 | //////////////// |
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67 | |
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68 | // --------------------------------------------------- |
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69 | // ast::FunctionDecl* genAttrCtorProto() const; |
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70 | /// Changes the node inside a pointer so that it has the unused attribute. |
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71 | void addUnusedAttribute(ast::ptr<ast::DeclWithType>& declPtr) { |
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72 | ast::DeclWithType* decl = declPtr.get_and_mutate(); |
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73 | decl->attributes.push_back(new ast::Attribute("unused")); |
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74 | } |
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75 | |
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76 | ast::ObjectDecl* dstParam() const { |
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77 | return new ast::ObjectDecl(getLocation(), "_dst", |
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78 | new ast::ReferenceType(new ast::EnumAttrType( |
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79 | ast::deepCopy(instType)))); |
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80 | } |
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81 | |
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82 | ast::ObjectDecl* srcParam() const { |
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83 | return new ast::ObjectDecl( |
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84 | getLocation(), "_src", |
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85 | new ast::EnumAttrType(ast::deepCopy(instType))); |
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86 | } |
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87 | |
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88 | // ---------------------------------------------------- |
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89 | |
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90 | const ast::Init* getAutoInit(const ast::Init* prev) const; |
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91 | |
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92 | std::vector<ast::ptr<ast::Init>> genLabelInit() const; |
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93 | |
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94 | std::vector<ast::ptr<ast::Init>> genValueInit() const; |
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95 | ast::ObjectDecl* genAttrArrayProto( |
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96 | const ast::EnumAttribute attr, const CodeLocation& location, |
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97 | std::vector<ast::ptr<ast::Init>>& inits) const; |
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98 | }; |
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99 | |
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100 | std::vector<ast::ptr<ast::Init>> EnumAttrFuncGenerator::genLabelInit() const { |
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101 | std::vector<ast::ptr<ast::Init>> inits; |
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102 | for (size_t i = 0; i < decl->members.size(); i++) { |
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103 | ast::ptr<ast::Decl> mem = decl->members.at(i); |
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104 | auto memAsObjectDecl = mem.as<ast::ObjectDecl>(); |
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105 | assert(memAsObjectDecl); |
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106 | inits.emplace_back(new ast::SingleInit( |
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107 | mem->location, |
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108 | ast::ConstantExpr::from_string(mem->location, mem->name))); |
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109 | } |
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110 | return inits; |
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111 | } |
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112 | |
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113 | std::vector<ast::ptr<ast::Init>> EnumAttrFuncGenerator::genValueInit() const { |
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114 | std::vector<ast::ptr<ast::Init>> inits; |
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115 | for (size_t i = 0; i < decl->members.size(); i++) { |
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116 | ast::ptr<ast::Decl> mem = decl->members.at(i); |
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117 | auto memAsObjectDecl = mem.as<ast::ObjectDecl>(); |
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118 | assert(memAsObjectDecl); |
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119 | if (memAsObjectDecl->init) { |
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120 | inits.emplace_back(memAsObjectDecl->init); |
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121 | } else { |
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122 | const CodeLocation& location = mem->location; |
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123 | if (i == 0) { |
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124 | inits.emplace_back(new ast::SingleInit( |
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125 | location, ast::ConstantExpr::from_int(mem->location, 0))); |
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126 | } else { |
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127 | inits.emplace_back(getAutoInit(inits.at(i - 1))); |
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128 | } |
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129 | } |
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130 | } |
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131 | return inits; |
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132 | } |
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133 | const ast::Init* EnumAttrFuncGenerator::getAutoInit( |
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134 | const ast::Init* prev) const { |
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135 | if (prev == nullptr) { |
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136 | return new ast::SingleInit( |
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137 | getLocation(), ast::ConstantExpr::from_int(getLocation(), 0)); |
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138 | } |
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139 | auto prevInit = dynamic_cast<const ast::SingleInit*>(prev); |
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140 | assert(prevInit); |
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141 | auto prevInitExpr = prevInit->value; |
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142 | if (auto constInit = prevInitExpr.as<ast::ConstantExpr>()) { |
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143 | // Assume no string literal for now |
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144 | return new ast::SingleInit( |
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145 | getLocation(), ast::ConstantExpr::from_int( |
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146 | getLocation(), constInit->intValue() + 1)); |
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147 | } else { |
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148 | auto untypedThisInit = new ast::UntypedExpr( |
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149 | getLocation(), new ast::NameExpr(getLocation(), "?++"), |
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150 | {prevInitExpr}); |
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151 | return new ast::SingleInit(getLocation(), untypedThisInit); |
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152 | } |
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153 | } |
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154 | |
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155 | ast::FunctionDecl* EnumAttrFuncGenerator::genProto( |
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156 | std::string&& name, std::vector<ast::ptr<ast::DeclWithType>>&& params, |
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157 | std::vector<ast::ptr<ast::DeclWithType>>&& returns) const { |
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158 | ast::FunctionDecl* decl = new ast::FunctionDecl( |
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159 | // Auto-generated routines use the type declaration's location. |
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160 | getLocation(), std::move(name), {}, {}, std::move(params), |
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161 | std::move(returns), |
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162 | // Only a prototype, no body. |
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163 | nullptr, |
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164 | // Use static storage if we are at the top level. |
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165 | (0 < functionNesting) ? ast::Storage::Classes() : ast::Storage::Static, |
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166 | proto_linkage, std::vector<ast::ptr<ast::Attribute>>(), |
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167 | // Auto-generated routines are inline to avoid conflicts. |
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168 | ast::Function::Specs(ast::Function::Inline)); |
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169 | decl->fixUniqueId(); |
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170 | return decl; |
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171 | } |
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172 | |
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173 | void EnumAttrFuncGenerator::produceDecl(const ast::FunctionDecl* decl) { |
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174 | assert(nullptr != decl->stmts); |
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175 | |
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176 | definitions.push_back(decl); |
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177 | } |
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178 | |
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179 | void EnumAttrFuncGenerator::produceForwardDecl(const ast::FunctionDecl* decl) { |
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180 | if (0 != functionNesting) return; |
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181 | ast::FunctionDecl* fwd = |
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182 | (decl->stmts) ? ast::asForward(decl) : ast::deepCopy(decl); |
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183 | fwd->fixUniqueId(); |
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184 | forwards.push_back(fwd); |
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185 | } |
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186 | |
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187 | ast::FunctionDecl* EnumAttrFuncGenerator::genPosnProto() const { |
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188 | return genProto( |
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189 | "posE", |
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190 | {new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl))}, |
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191 | {new ast::ObjectDecl(getLocation(), "_ret", |
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192 | new ast::BasicType(ast::BasicKind::UnsignedInt))}); |
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193 | } |
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194 | |
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195 | ast::FunctionDecl* EnumAttrFuncGenerator::genLabelProto() const { |
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196 | return genProto( |
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197 | "labelE", |
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198 | {new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl))}, |
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199 | {new ast::ObjectDecl( |
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200 | getLocation(), "_ret", |
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201 | new ast::PointerType(new ast::BasicType{ast::BasicKind::Char}))}); |
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202 | } |
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203 | |
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204 | ast::FunctionDecl* EnumAttrFuncGenerator::genValueProto() const { |
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205 | return genProto( |
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206 | "valueE", |
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207 | {new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl))}, |
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208 | {new ast::ObjectDecl(getLocation(), "_ret", |
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209 | ast::deepCopy(decl->base))}); |
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210 | } |
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211 | |
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212 | ast::FunctionDecl* EnumAttrFuncGenerator::genFromIntProto() const { |
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213 | return genProto( |
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214 | "fromInt", |
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215 | {new ast::ObjectDecl(getLocation(), "_i", new ast::BasicType(ast::BasicKind::UnsignedInt))}, |
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216 | {new ast::ObjectDecl(getLocation(), "_ret", new ast::EnumInstType(decl))} |
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217 | ); |
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218 | } |
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219 | |
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220 | ast::FunctionDecl* EnumAttrFuncGenerator::genFromInstanceProto() const { |
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221 | return genProto( |
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222 | "fromInstance", |
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223 | {new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl))}, |
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224 | {new ast::ObjectDecl(getLocation(), "_ret", new ast::BasicType(ast::BasicKind::UnsignedInt))} |
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225 | ); |
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226 | } |
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227 | |
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228 | void EnumAttrFuncGenerator::genFromIntBody(ast::FunctionDecl* func) const { |
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229 | auto params = func->params; |
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230 | assert( params.size() == 1 ); |
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231 | auto param = params.front(); |
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232 | auto castExpr = new ast::CastExpr( |
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233 | func->location, |
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234 | new ast::VariableExpr(func->location, param), |
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235 | new ast::EnumInstType(decl), |
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236 | ast::GeneratedFlag::ExplicitCast |
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237 | ); |
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238 | func->stmts = new ast::CompoundStmt( |
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239 | func->location, {new ast::ReturnStmt(func->location, castExpr)} |
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240 | ); |
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241 | } |
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242 | |
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243 | void EnumAttrFuncGenerator::genFromInstanceBody(ast::FunctionDecl* func) const { |
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244 | auto params = func->params; |
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245 | assert( params.size() == 1 ); |
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246 | auto param = params.front(); |
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247 | ast::UntypedExpr* untyped = ast::UntypedExpr::createCall( |
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248 | func->location, "posE", { new ast::VariableExpr(func->location, param) }); |
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249 | func->stmts = new ast::CompoundStmt( |
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250 | func->location, {new ast::ReturnStmt(func->location, untyped)} |
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251 | ); |
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252 | } |
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253 | |
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254 | void EnumAttrFuncGenerator::genSuccPredBody(ast::FunctionDecl * func, const char* opt) const { |
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255 | auto params = func->params; |
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256 | assert( params.size() == 1 ); |
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257 | auto param = params.front(); |
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258 | auto enumToInt = new ast::CastExpr( |
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259 | func->location, |
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260 | new ast::VariableExpr(func->location, param), |
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261 | new ast::BasicType(ast::BasicKind::UnsignedInt), |
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262 | ast::GeneratedFlag::ExplicitCast |
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263 | ); |
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264 | ast::UntypedExpr* addOneExpr = ast::UntypedExpr::createCall( func->location, |
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265 | opt, |
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266 | {enumToInt, |
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267 | ast::ConstantExpr::from_int(func->location, 1)} |
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268 | ); |
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269 | auto intToEnum = new ast::CastExpr( |
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270 | func->location, |
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271 | addOneExpr, |
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272 | new ast::EnumInstType( decl ), |
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273 | ast::GeneratedFlag::ExplicitCast |
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274 | ); |
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275 | func->stmts = new ast::CompoundStmt( |
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276 | func->location, { |
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277 | new ast::ReturnStmt( |
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278 | func->location, |
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279 | intToEnum |
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280 | ) |
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281 | } |
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282 | ); |
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283 | } |
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284 | |
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285 | |
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286 | void EnumAttrFuncGenerator::genSerialTraitFuncs() { |
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287 | ast::FunctionDecl * protos[4] = { |
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288 | genFromIntProto(), |
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289 | genFromInstanceProto(), |
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290 | genInstToInstFuncProto("succ"), |
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291 | genInstToInstFuncProto("pred") |
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292 | }; |
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293 | for (auto& proto: protos) produceForwardDecl(proto); |
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294 | genFromIntBody(protos[0]); |
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295 | genFromInstanceBody(protos[1]); |
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296 | genSuccPredBody(protos[2], "?+?"); |
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297 | genSuccPredBody(protos[3], "?-?"); |
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298 | for (auto& proto: protos) produceDecl(proto); |
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299 | } |
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300 | |
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301 | ast::FunctionDecl* EnumAttrFuncGenerator::genInstToInstFuncProto(const char * func) const { |
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302 | return genProto( |
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303 | func, |
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304 | {new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl))}, |
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305 | {new ast::ObjectDecl(getLocation(), "_ret", |
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306 | new ast::EnumInstType(decl))}); |
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307 | } |
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308 | |
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309 | ast::FunctionDecl* EnumAttrFuncGenerator::genBoundedProto(const char * func) const { |
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310 | return genProto(func, {}, { |
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311 | new ast::ObjectDecl(getLocation(), "_i", new ast::EnumInstType(decl)) |
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312 | }); |
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313 | } |
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314 | |
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315 | void EnumAttrFuncGenerator::genBoundedBody(ast::FunctionDecl* func) const { |
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316 | const CodeLocation & loc = func->location; |
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317 | auto mem = func->name=="lowerBound"? decl->members.front() : decl->members.back(); |
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318 | auto expr = new ast::NameExpr( loc, mem->name ); |
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319 | func->stmts = new ast::CompoundStmt( loc, {new ast::ReturnStmt(loc, expr)}); |
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320 | } |
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321 | |
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322 | void EnumAttrFuncGenerator::genBoundedFunctions() { |
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323 | ast::FunctionDecl * boundedProtos[2] = {genBoundedProto("upperBound"), genBoundedProto("lowerBound")}; |
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324 | for (auto & protos: boundedProtos) { |
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325 | produceForwardDecl(protos); |
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326 | genBoundedBody(protos); |
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327 | produceDecl(protos); |
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328 | } |
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329 | } |
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330 | |
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331 | inline ast::EnumAttrType * getPosnType( const ast::EnumDecl * decl ) { |
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332 | return new ast::EnumAttrType(new ast::EnumInstType(decl), ast::EnumAttribute::Posn); |
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333 | } |
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334 | |
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335 | ast::ObjectDecl* EnumAttrFuncGenerator::genAttrArrayProto( |
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336 | const ast::EnumAttribute attr, const CodeLocation& location, |
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337 | std::vector<ast::ptr<ast::Init>>& inits) const { |
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338 | ast::ArrayType* arrT = new ast::ArrayType( |
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339 | attr == ast::EnumAttribute::Value |
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340 | ? decl->base |
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341 | : new ast::PointerType(new ast::BasicType{ast::BasicKind::Char}), |
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342 | ast::ConstantExpr::from_int(decl->location, decl->members.size()), |
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343 | ast::LengthFlag::FixedLen, ast::DimensionFlag::DynamicDim); |
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344 | |
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345 | ast::ObjectDecl* objDecl = |
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346 | new ast::ObjectDecl( |
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347 | decl->location, decl->getUnmangeldArrayName( attr ), |
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348 | arrT, new ast::ListInit( location, std::move( inits ) ), |
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349 | ast::Storage::Static, ast::Linkage::AutoGen ); |
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350 | |
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351 | return objDecl; |
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352 | } |
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353 | |
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354 | void EnumAttrFuncGenerator::genValueOrLabelBody( |
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355 | ast::FunctionDecl* func, ast::ObjectDecl* arrDecl) const { |
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356 | ast::UntypedExpr* untyped = ast::UntypedExpr::createCall( |
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357 | func->location, "?[?]", |
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358 | {new ast::NameExpr(func->location, arrDecl->name), |
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359 | new ast::CastExpr( |
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360 | func->location, |
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361 | new ast::VariableExpr( func->location, func->params.front() ), |
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362 | new ast::EnumAttrType( new ast::EnumInstType(decl), |
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363 | ast::EnumAttribute::Posn))}); |
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364 | func->stmts = new ast::CompoundStmt( |
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365 | func->location, {new ast::ReturnStmt(func->location, untyped)}); |
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366 | } |
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367 | |
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368 | void EnumAttrFuncGenerator::genPosnBody(ast::FunctionDecl* func) const { |
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369 | auto castExpr = new ast::CastExpr( |
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370 | func->location, |
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371 | new ast::VariableExpr(func->location, func->params.front()), |
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372 | new ast::EnumAttrType(new ast::EnumInstType(decl), |
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373 | ast::EnumAttribute::Posn)); |
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374 | func->stmts = new ast::CompoundStmt( |
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375 | func->location, {new ast::ReturnStmt(func->location, castExpr)}); |
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376 | } |
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377 | |
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378 | void EnumAttrFuncGenerator::genTypedEnumFunction(const ast::EnumAttribute attr) { |
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379 | if (attr == ast::EnumAttribute::Value || |
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380 | attr == ast::EnumAttribute::Label) { |
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381 | // TypedEnum's backing arrays |
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382 | std::vector<ast::ptr<ast::Init>> inits = |
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383 | attr == ast::EnumAttribute::Value ? genValueInit() : genLabelInit(); |
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384 | ast::ObjectDecl* arrayProto = |
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385 | genAttrArrayProto(attr, getLocation(), inits); |
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386 | forwards.push_back(arrayProto); |
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387 | |
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388 | ast::FunctionDecl* funcProto = ( attr == ast::EnumAttribute::Value ) |
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389 | ? genValueProto() |
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390 | : genLabelProto(); |
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391 | produceForwardDecl(funcProto); |
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392 | genValueOrLabelBody(funcProto, arrayProto); |
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393 | produceDecl(funcProto); |
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394 | } else { |
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395 | ast::FunctionDecl* funcProto = genPosnProto(); |
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396 | produceForwardDecl(funcProto); |
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397 | genPosnBody(funcProto); |
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398 | produceDecl(funcProto); |
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399 | } |
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400 | } |
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401 | |
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402 | void EnumAttrFuncGenerator::genTypedEnumFuncs() { |
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403 | if (decl->base) genTypedEnumFunction(ast::EnumAttribute::Value); |
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404 | genTypedEnumFunction(ast::EnumAttribute::Label); |
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405 | genTypedEnumFunction(ast::EnumAttribute::Posn); |
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406 | } |
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407 | |
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408 | void EnumAttrFuncGenerator::generateAndAppendFunctions( |
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409 | std::list<ast::ptr<ast::Decl>>& decls) { |
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410 | // Generate the functions (they go into forwards and definitions). |
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411 | genTypedEnumFuncs(); |
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412 | genSerialTraitFuncs(); |
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413 | genBoundedFunctions(); |
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414 | // Now export the lists contents. |
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415 | decls.splice(decls.end(), forwards); |
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416 | decls.splice(decls.end(), definitions); |
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417 | } |
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418 | |
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419 | // --------------------------------------------------------- |
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420 | |
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421 | struct ImplementEnumFunc final : |
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422 | public ast::WithDeclsToAdd<>, public ast::WithShortCircuiting { |
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423 | void previsit(const ast::EnumDecl* enumDecl); |
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424 | void previsit(const ast::FunctionDecl* functionDecl); |
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425 | void postvisit(const ast::FunctionDecl* functionDecl); |
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426 | |
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427 | private: |
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428 | // Current level of nested functions. |
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429 | unsigned int functionNesting = 0; |
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430 | }; |
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431 | |
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432 | void ImplementEnumFunc::previsit(const ast::EnumDecl* enumDecl) { |
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433 | if (!enumDecl->body || !enumDecl->isTyped) return; |
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434 | ast::EnumInstType enumInst(enumDecl->name); |
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435 | enumInst.base = enumDecl; |
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436 | EnumAttrFuncGenerator gen(enumDecl, &enumInst, functionNesting); |
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437 | gen.generateAndAppendFunctions(declsToAddAfter); |
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438 | } |
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439 | |
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440 | void ImplementEnumFunc::previsit(const ast::FunctionDecl*) { |
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441 | functionNesting += 1; |
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442 | } |
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443 | |
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444 | void ImplementEnumFunc::postvisit(const ast::FunctionDecl*) { |
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445 | functionNesting -= 1; |
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446 | } |
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447 | |
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448 | } // namespace |
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449 | |
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450 | void implementEnumFunc(ast::TranslationUnit& translationUnit) { |
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451 | ast::Pass<ImplementEnumFunc>::run(translationUnit); |
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452 | } |
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453 | |
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454 | } // namespace Validate |
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