1 | #pragma once |
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2 | |
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3 | // IWYU pragma: private, include "Common/PassVisitor.h" |
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4 | |
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5 | #include <stack> |
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6 | |
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7 | #include "Common/utility.h" |
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8 | |
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9 | #include "SynTree/Mutator.h" |
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10 | #include "SynTree/Visitor.h" |
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11 | |
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12 | #include "SymTab/Indexer.h" |
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13 | |
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14 | #include "SynTree/Attribute.h" |
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15 | #include "SynTree/Initializer.h" |
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16 | #include "SynTree/Statement.h" |
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17 | #include "SynTree/Type.h" |
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18 | #include "SynTree/Declaration.h" |
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19 | #include "SynTree/Expression.h" |
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20 | #include "SynTree/Constant.h" |
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21 | |
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22 | class TypeSubstitution; |
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23 | |
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24 | #include "PassVisitor.proto.h" |
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25 | |
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26 | //------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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27 | // Templated visitor type |
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28 | // To use declare a PassVisitor< YOUR VISITOR TYPE > |
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29 | // The visitor type should specify the previsit/postvisit/premutate/postmutate for types that are desired. |
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30 | // Note: previsit/postvisit/premutate/postmutate must be **public** members |
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31 | // |
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32 | // Several additional features are available through inheritance |
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33 | // | WithTypeSubstitution - provides polymorphic TypeSubstitution * env for the current expression |
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34 | // | WithStmtsToAdd - provides the ability to insert statements before or after the current statement by adding new statements into |
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35 | // stmtsToAddBefore or stmtsToAddAfter respectively. |
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36 | // | WithShortCircuiting - provides the ability to skip visiting child nodes; set visit_children to false in pre{visit,mutate} to skip visiting children |
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37 | // | WithGuards - provides the ability to save/restore data like a LIFO stack; to save, call GuardValue with the variable to save, the variable |
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38 | // will automatically be restored to its previous value after the corresponding postvisit/postmutate teminates. |
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39 | //------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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40 | template< typename pass_type > |
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41 | class PassVisitor final : public Visitor, public Mutator { |
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42 | public: |
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43 | |
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44 | template< typename... Args > |
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45 | PassVisitor(Args &&... args) |
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46 | : pass( std::forward<Args>( args )... ) |
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47 | { |
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48 | typedef PassVisitor<pass_type> this_t; |
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49 | this_t * const * visitor = visitor_impl(pass, 0); |
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50 | if(visitor) { |
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51 | *const_cast<this_t **>( visitor ) = this; |
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52 | } |
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53 | } |
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54 | |
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55 | virtual ~PassVisitor() = default; |
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56 | |
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57 | pass_type pass; |
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58 | |
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59 | virtual void visit( ObjectDecl * objectDecl ) override final; |
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60 | virtual void visit( FunctionDecl * functionDecl ) override final; |
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61 | virtual void visit( StructDecl * aggregateDecl ) override final; |
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62 | virtual void visit( UnionDecl * aggregateDecl ) override final; |
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63 | virtual void visit( EnumDecl * aggregateDecl ) override final; |
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64 | virtual void visit( TraitDecl * aggregateDecl ) override final; |
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65 | virtual void visit( TypeDecl * typeDecl ) override final; |
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66 | virtual void visit( TypedefDecl * typeDecl ) override final; |
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67 | virtual void visit( AsmDecl * asmDecl ) override final; |
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68 | |
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69 | virtual void visit( CompoundStmt * compoundStmt ) override final; |
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70 | virtual void visit( ExprStmt * exprStmt ) override final; |
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71 | virtual void visit( AsmStmt * asmStmt ) override final; |
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72 | virtual void visit( IfStmt * ifStmt ) override final; |
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73 | virtual void visit( WhileStmt * whileStmt ) override final; |
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74 | virtual void visit( ForStmt * forStmt ) override final; |
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75 | virtual void visit( SwitchStmt * switchStmt ) override final; |
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76 | virtual void visit( CaseStmt * caseStmt ) override final; |
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77 | virtual void visit( BranchStmt * branchStmt ) override final; |
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78 | virtual void visit( ReturnStmt * returnStmt ) override final; |
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79 | virtual void visit( ThrowStmt * throwStmt ) override final; |
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80 | virtual void visit( TryStmt * tryStmt ) override final; |
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81 | virtual void visit( CatchStmt * catchStmt ) override final; |
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82 | virtual void visit( FinallyStmt * finallyStmt ) override final; |
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83 | virtual void visit( WaitForStmt * waitforStmt ) override final; |
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84 | virtual void visit( WithStmt * withStmt ) override final; |
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85 | virtual void visit( NullStmt * nullStmt ) override final; |
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86 | virtual void visit( DeclStmt * declStmt ) override final; |
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87 | virtual void visit( ImplicitCtorDtorStmt * impCtorDtorStmt ) override final; |
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88 | |
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89 | virtual void visit( ApplicationExpr * applicationExpr ) override final; |
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90 | virtual void visit( UntypedExpr * untypedExpr ) override final; |
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91 | virtual void visit( NameExpr * nameExpr ) override final; |
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92 | virtual void visit( CastExpr * castExpr ) override final; |
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93 | virtual void visit( VirtualCastExpr * castExpr ) override final; |
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94 | virtual void visit( AddressExpr * addressExpr ) override final; |
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95 | virtual void visit( LabelAddressExpr * labAddressExpr ) override final; |
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96 | virtual void visit( UntypedMemberExpr * memberExpr ) override final; |
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97 | virtual void visit( MemberExpr * memberExpr ) override final; |
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98 | virtual void visit( VariableExpr * variableExpr ) override final; |
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99 | virtual void visit( ConstantExpr * constantExpr ) override final; |
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100 | virtual void visit( SizeofExpr * sizeofExpr ) override final; |
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101 | virtual void visit( AlignofExpr * alignofExpr ) override final; |
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102 | virtual void visit( UntypedOffsetofExpr * offsetofExpr ) override final; |
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103 | virtual void visit( OffsetofExpr * offsetofExpr ) override final; |
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104 | virtual void visit( OffsetPackExpr * offsetPackExpr ) override final; |
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105 | virtual void visit( AttrExpr * attrExpr ) override final; |
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106 | virtual void visit( LogicalExpr * logicalExpr ) override final; |
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107 | virtual void visit( ConditionalExpr * conditionalExpr ) override final; |
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108 | virtual void visit( CommaExpr * commaExpr ) override final; |
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109 | virtual void visit( TypeExpr * typeExpr ) override final; |
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110 | virtual void visit( AsmExpr * asmExpr ) override final; |
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111 | virtual void visit( ImplicitCopyCtorExpr * impCpCtorExpr ) override final; |
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112 | virtual void visit( ConstructorExpr * ctorExpr ) override final; |
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113 | virtual void visit( CompoundLiteralExpr * compLitExpr ) override final; |
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114 | virtual void visit( RangeExpr * rangeExpr ) override final; |
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115 | virtual void visit( UntypedTupleExpr * tupleExpr ) override final; |
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116 | virtual void visit( TupleExpr * tupleExpr ) override final; |
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117 | virtual void visit( TupleIndexExpr * tupleExpr ) override final; |
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118 | virtual void visit( TupleAssignExpr * assignExpr ) override final; |
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119 | virtual void visit( StmtExpr * stmtExpr ) override final; |
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120 | virtual void visit( UniqueExpr * uniqueExpr ) override final; |
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121 | virtual void visit( UntypedInitExpr * initExpr ) override final; |
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122 | virtual void visit( InitExpr * initExpr ) override final; |
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123 | |
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124 | virtual void visit( VoidType * basicType ) override final; |
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125 | virtual void visit( BasicType * basicType ) override final; |
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126 | virtual void visit( PointerType * pointerType ) override final; |
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127 | virtual void visit( ArrayType * arrayType ) override final; |
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128 | virtual void visit( ReferenceType * referenceType ) override final; |
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129 | virtual void visit( FunctionType * functionType ) override final; |
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130 | virtual void visit( StructInstType * aggregateUseType ) override final; |
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131 | virtual void visit( UnionInstType * aggregateUseType ) override final; |
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132 | virtual void visit( EnumInstType * aggregateUseType ) override final; |
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133 | virtual void visit( TraitInstType * aggregateUseType ) override final; |
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134 | virtual void visit( TypeInstType * aggregateUseType ) override final; |
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135 | virtual void visit( TupleType * tupleType ) override final; |
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136 | virtual void visit( TypeofType * typeofType ) override final; |
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137 | virtual void visit( AttrType * attrType ) override final; |
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138 | virtual void visit( VarArgsType * varArgsType ) override final; |
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139 | virtual void visit( ZeroType * zeroType ) override final; |
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140 | virtual void visit( OneType * oneType ) override final; |
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141 | |
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142 | virtual void visit( Designation * designation ) override final; |
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143 | virtual void visit( SingleInit * singleInit ) override final; |
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144 | virtual void visit( ListInit * listInit ) override final; |
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145 | virtual void visit( ConstructorInit * ctorInit ) override final; |
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146 | |
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147 | virtual void visit( Subrange * subrange ) override final; |
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148 | |
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149 | virtual void visit( Constant * constant ) override final; |
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150 | |
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151 | virtual void visit( Attribute * attribute ) override final; |
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152 | |
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153 | virtual DeclarationWithType * mutate( ObjectDecl * objectDecl ) override final; |
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154 | virtual DeclarationWithType * mutate( FunctionDecl * functionDecl ) override final; |
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155 | virtual Declaration * mutate( StructDecl * aggregateDecl ) override final; |
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156 | virtual Declaration * mutate( UnionDecl * aggregateDecl ) override final; |
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157 | virtual Declaration * mutate( EnumDecl * aggregateDecl ) override final; |
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158 | virtual Declaration * mutate( TraitDecl * aggregateDecl ) override final; |
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159 | virtual Declaration * mutate( TypeDecl * typeDecl ) override final; |
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160 | virtual Declaration * mutate( TypedefDecl * typeDecl ) override final; |
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161 | virtual AsmDecl * mutate( AsmDecl * asmDecl ) override final; |
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162 | |
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163 | virtual CompoundStmt * mutate( CompoundStmt * compoundStmt ) override final; |
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164 | virtual Statement * mutate( ExprStmt * exprStmt ) override final; |
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165 | virtual Statement * mutate( AsmStmt * asmStmt ) override final; |
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166 | virtual Statement * mutate( IfStmt * ifStmt ) override final; |
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167 | virtual Statement * mutate( WhileStmt * whileStmt ) override final; |
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168 | virtual Statement * mutate( ForStmt * forStmt ) override final; |
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169 | virtual Statement * mutate( SwitchStmt * switchStmt ) override final; |
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170 | virtual Statement * mutate( CaseStmt * caseStmt ) override final; |
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171 | virtual Statement * mutate( BranchStmt * branchStmt ) override final; |
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172 | virtual Statement * mutate( ReturnStmt * returnStmt ) override final; |
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173 | virtual Statement * mutate( ThrowStmt * throwStmt ) override final; |
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174 | virtual Statement * mutate( TryStmt * tryStmt ) override final; |
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175 | virtual Statement * mutate( CatchStmt * catchStmt ) override final; |
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176 | virtual Statement * mutate( FinallyStmt * finallyStmt ) override final; |
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177 | virtual Statement * mutate( WaitForStmt * waitforStmt ) override final; |
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178 | virtual Statement * mutate( WithStmt * withStmt ) override final; |
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179 | virtual NullStmt * mutate( NullStmt * nullStmt ) override final; |
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180 | virtual Statement * mutate( DeclStmt * declStmt ) override final; |
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181 | virtual Statement * mutate( ImplicitCtorDtorStmt * impCtorDtorStmt ) override final; |
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182 | |
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183 | virtual Expression * mutate( ApplicationExpr * applicationExpr ) override final; |
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184 | virtual Expression * mutate( UntypedExpr * untypedExpr ) override final; |
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185 | virtual Expression * mutate( NameExpr * nameExpr ) override final; |
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186 | virtual Expression * mutate( AddressExpr * castExpr ) override final; |
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187 | virtual Expression * mutate( LabelAddressExpr * labAddressExpr ) override final; |
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188 | virtual Expression * mutate( CastExpr * castExpr ) override final; |
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189 | virtual Expression * mutate( VirtualCastExpr * castExpr ) override final; |
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190 | virtual Expression * mutate( UntypedMemberExpr * memberExpr ) override final; |
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191 | virtual Expression * mutate( MemberExpr * memberExpr ) override final; |
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192 | virtual Expression * mutate( VariableExpr * variableExpr ) override final; |
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193 | virtual Expression * mutate( ConstantExpr * constantExpr ) override final; |
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194 | virtual Expression * mutate( SizeofExpr * sizeofExpr ) override final; |
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195 | virtual Expression * mutate( AlignofExpr * alignofExpr ) override final; |
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196 | virtual Expression * mutate( UntypedOffsetofExpr * offsetofExpr ) override final; |
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197 | virtual Expression * mutate( OffsetofExpr * offsetofExpr ) override final; |
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198 | virtual Expression * mutate( OffsetPackExpr * offsetPackExpr ) override final; |
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199 | virtual Expression * mutate( AttrExpr * attrExpr ) override final; |
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200 | virtual Expression * mutate( LogicalExpr * logicalExpr ) override final; |
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201 | virtual Expression * mutate( ConditionalExpr * conditionalExpr ) override final; |
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202 | virtual Expression * mutate( CommaExpr * commaExpr ) override final; |
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203 | virtual Expression * mutate( TypeExpr * typeExpr ) override final; |
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204 | virtual Expression * mutate( AsmExpr * asmExpr ) override final; |
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205 | virtual Expression * mutate( ImplicitCopyCtorExpr * impCpCtorExpr ) override final; |
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206 | virtual Expression * mutate( ConstructorExpr * ctorExpr ) override final; |
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207 | virtual Expression * mutate( CompoundLiteralExpr * compLitExpr ) override final; |
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208 | virtual Expression * mutate( RangeExpr * rangeExpr ) override final; |
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209 | virtual Expression * mutate( UntypedTupleExpr * tupleExpr ) override final; |
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210 | virtual Expression * mutate( TupleExpr * tupleExpr ) override final; |
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211 | virtual Expression * mutate( TupleIndexExpr * tupleExpr ) override final; |
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212 | virtual Expression * mutate( TupleAssignExpr * assignExpr ) override final; |
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213 | virtual Expression * mutate( StmtExpr * stmtExpr ) override final; |
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214 | virtual Expression * mutate( UniqueExpr * uniqueExpr ) override final; |
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215 | virtual Expression * mutate( UntypedInitExpr * initExpr ) override final; |
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216 | virtual Expression * mutate( InitExpr * initExpr ) override final; |
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217 | |
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218 | virtual Type * mutate( VoidType * basicType ) override final; |
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219 | virtual Type * mutate( BasicType * basicType ) override final; |
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220 | virtual Type * mutate( PointerType * pointerType ) override final; |
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221 | virtual Type * mutate( ArrayType * arrayType ) override final; |
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222 | virtual Type * mutate( ReferenceType * referenceType ) override final; |
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223 | virtual Type * mutate( FunctionType * functionType ) override final; |
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224 | virtual Type * mutate( StructInstType * aggregateUseType ) override final; |
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225 | virtual Type * mutate( UnionInstType * aggregateUseType ) override final; |
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226 | virtual Type * mutate( EnumInstType * aggregateUseType ) override final; |
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227 | virtual Type * mutate( TraitInstType * aggregateUseType ) override final; |
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228 | virtual Type * mutate( TypeInstType * aggregateUseType ) override final; |
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229 | virtual Type * mutate( TupleType * tupleType ) override final; |
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230 | virtual Type * mutate( TypeofType * typeofType ) override final; |
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231 | virtual Type * mutate( AttrType * attrType ) override final; |
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232 | virtual Type * mutate( VarArgsType * varArgsType ) override final; |
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233 | virtual Type * mutate( ZeroType * zeroType ) override final; |
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234 | virtual Type * mutate( OneType * oneType ) override final; |
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235 | |
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236 | virtual Designation * mutate( Designation * designation ) override final; |
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237 | virtual Initializer * mutate( SingleInit * singleInit ) override final; |
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238 | virtual Initializer * mutate( ListInit * listInit ) override final; |
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239 | virtual Initializer * mutate( ConstructorInit * ctorInit ) override final; |
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240 | |
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241 | virtual Subrange * mutate( Subrange * subrange ) override final; |
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242 | |
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243 | virtual Constant * mutate( Constant * constant ) override final; |
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244 | |
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245 | virtual Attribute * mutate( Attribute * attribute ) override final; |
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246 | |
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247 | virtual TypeSubstitution * mutate( TypeSubstitution * sub ) final; |
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248 | |
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249 | private: |
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250 | template<typename pass_t> friend void acceptAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor ); |
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251 | template<typename pass_t> friend void mutateAll( std::list< Declaration* > &decls, PassVisitor< pass_t >& visitor ); |
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252 | template< typename TreeType, typename pass_t > friend void maybeAccept_impl( TreeType * tree, PassVisitor< pass_t > & visitor ); |
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253 | template< typename TreeType, typename pass_t > friend void maybeMutate_impl( TreeType *& tree, PassVisitor< pass_t > & mutator ); |
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254 | template< typename Container, typename pass_t > friend void maybeAccept_impl( Container & container, PassVisitor< pass_t > & visitor ); |
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255 | template< typename Container, typename pass_t > friend void maybeMutate_impl( Container & container, PassVisitor< pass_t > & mutator ); |
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256 | |
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257 | template<typename node_type> void call_previsit ( node_type * node ) { previsit_impl ( pass, node, 0 ); } |
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258 | template<typename node_type> void call_postvisit( node_type * node ) { postvisit_impl( pass, node, 0 ); } |
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259 | |
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260 | template<typename node_type> void call_premutate ( node_type * node ) { premutate_impl( pass, node, 0 ); } |
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261 | template<typename return_type, typename node_type> return_type call_postmutate ( node_type * node ) { return postmutate_impl<return_type>( pass, node, 0 ); } |
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262 | |
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263 | void call_beginScope() { begin_scope_impl( pass, 0 ); } |
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264 | void call_endScope () { end_scope_impl ( pass, 0 ); } |
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265 | |
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266 | void set_env( TypeSubstitution * env ) { set_env_impl( pass, env, 0); } |
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267 | |
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268 | template< typename func_t > |
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269 | void handleStatementList( std::list< Statement * > & statements, func_t func ); |
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270 | void visitStatementList ( std::list< Statement* > &statements ); |
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271 | void mutateStatementList( std::list< Statement* > &statements ); |
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272 | |
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273 | template< typename func_t > |
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274 | Statement * handleStatement( Statement * stmt, func_t func ); |
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275 | Statement * visitStatement ( Statement * stmt ); |
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276 | Statement * mutateStatement( Statement * stmt ); |
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277 | |
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278 | template< typename func_t > |
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279 | Expression * handleExpression( Expression * expr, func_t func ); |
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280 | Expression * visitExpression ( Expression * expr ); |
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281 | Expression * mutateExpression( Expression * expr ); |
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282 | |
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283 | |
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284 | TypeSubstitution ** get_env_ptr () { return env_impl ( pass, 0); } |
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285 | std::list< Statement* > * get_beforeStmts() { return stmtsToAddBefore_impl( pass, 0); } |
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286 | std::list< Statement* > * get_afterStmts () { return stmtsToAddAfter_impl ( pass, 0); } |
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287 | std::list< Declaration* > * get_beforeDecls() { return declsToAddBefore_impl( pass, 0); } |
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288 | std::list< Declaration* > * get_afterDecls () { return declsToAddAfter_impl ( pass, 0); } |
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289 | |
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290 | bool get_visit_children () { bool_ref * ptr = visit_children_impl(pass, 0); return ptr ? *ptr : true; } |
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291 | bool_ref * get_visit_children_ptr() { return visit_children_impl(pass, 0); } |
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292 | |
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293 | void indexerScopeEnter () { indexer_impl_enterScope ( pass, 0 ); } |
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294 | void indexerScopeLeave () { indexer_impl_leaveScope ( pass, 0 ); } |
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295 | void indexerAddId ( DeclarationWithType * node ) { indexer_impl_addId ( pass, 0, node ); } |
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296 | void indexerAddType ( NamedTypeDecl * node ) { indexer_impl_addType ( pass, 0, node ); } |
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297 | void indexerAddStruct ( const std::string & id ) { indexer_impl_addStruct ( pass, 0, id ); } |
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298 | void indexerAddStruct ( StructDecl * node ) { indexer_impl_addStruct ( pass, 0, node ); } |
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299 | void indexerAddStructFwd( StructDecl * node ) { indexer_impl_addStructFwd( pass, 0, node ); } |
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300 | void indexerAddEnum ( EnumDecl * node ) { indexer_impl_addEnum ( pass, 0, node ); } |
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301 | void indexerAddUnion ( const std::string & id ) { indexer_impl_addUnion ( pass, 0, id ); } |
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302 | void indexerAddUnion ( UnionDecl * node ) { indexer_impl_addUnion ( pass, 0, node ); } |
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303 | void indexerAddUnionFwd ( UnionDecl * node ) { indexer_impl_addUnionFwd ( pass, 0, node ); } |
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304 | void indexerAddTrait ( TraitDecl * node ) { indexer_impl_addTrait ( pass, 0, node ); } |
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305 | void indexerAddWith ( WithStmt * node ) { indexer_impl_addWith ( pass, 0, node ); } |
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306 | |
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307 | |
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308 | template< typename TreeType, typename VisitorType > |
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309 | friend inline void indexerScopedAccept( TreeType * tree, VisitorType &visitor ); |
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310 | |
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311 | template< typename TreeType, typename VisitorType > |
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312 | friend inline void indexerScopedMutate( TreeType *& tree, VisitorType &visitor ); |
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313 | }; |
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314 | |
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315 | template<typename pass_type, typename T> |
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316 | void GuardValue( pass_type * pass, T& val ) { |
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317 | pass->at_cleanup( [ val ]( void * newVal ) { |
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318 | * static_cast< T * >( newVal ) = val; |
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319 | }, static_cast< void * >( & val ) ); |
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320 | } |
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321 | |
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322 | class WithTypeSubstitution { |
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323 | protected: |
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324 | WithTypeSubstitution() = default; |
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325 | ~WithTypeSubstitution() = default; |
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326 | |
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327 | public: |
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328 | TypeSubstitution * env = nullptr; |
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329 | }; |
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330 | |
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331 | class WithStmtsToAdd { |
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332 | protected: |
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333 | WithStmtsToAdd() = default; |
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334 | ~WithStmtsToAdd() = default; |
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335 | |
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336 | public: |
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337 | std::list< Statement* > stmtsToAddBefore; |
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338 | std::list< Statement* > stmtsToAddAfter; |
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339 | }; |
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340 | |
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341 | class WithDeclsToAdd { |
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342 | protected: |
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343 | WithDeclsToAdd() = default; |
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344 | ~WithDeclsToAdd() { |
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345 | assert( declsToAddBefore.empty() ); |
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346 | } |
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347 | |
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348 | public: |
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349 | std::list< Declaration* > declsToAddBefore; |
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350 | std::list< Declaration* > declsToAddAfter; |
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351 | }; |
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352 | |
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353 | class WithShortCircuiting { |
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354 | protected: |
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355 | WithShortCircuiting() = default; |
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356 | ~WithShortCircuiting() = default; |
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357 | |
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358 | public: |
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359 | bool_ref visit_children; |
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360 | }; |
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361 | |
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362 | class WithGuards { |
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363 | protected: |
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364 | WithGuards() = default; |
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365 | ~WithGuards() = default; |
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366 | |
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367 | public: |
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368 | at_cleanup_t at_cleanup; |
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369 | |
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370 | template< typename T > |
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371 | void GuardValue( T& val ) { |
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372 | at_cleanup( [ val ]( void * newVal ) { |
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373 | * static_cast< T * >( newVal ) = val; |
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374 | }, static_cast< void * >( & val ) ); |
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375 | } |
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376 | |
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377 | template< typename T > |
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378 | void GuardScope( T& val ) { |
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379 | val.beginScope(); |
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380 | at_cleanup( []( void * val ) { |
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381 | static_cast< T * >( val )->endScope(); |
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382 | }, static_cast< void * >( & val ) ); |
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383 | } |
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384 | |
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385 | template< typename Func > |
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386 | void GuardAction( Func func ) { |
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387 | at_cleanup( [func](__attribute__((unused)) void *) { func(); }, nullptr ); |
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388 | } |
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389 | }; |
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390 | |
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391 | template<typename pass_type> |
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392 | class WithVisitorRef { |
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393 | protected: |
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394 | WithVisitorRef() {} |
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395 | ~WithVisitorRef() {} |
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396 | |
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397 | public: |
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398 | PassVisitor<pass_type> * const visitor = nullptr; |
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399 | }; |
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400 | |
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401 | class WithIndexer { |
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402 | protected: |
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403 | WithIndexer() {} |
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404 | ~WithIndexer() {} |
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405 | |
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406 | public: |
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407 | SymTab::Indexer indexer; |
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408 | }; |
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409 | |
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410 | #include "SynTree/TypeSubstitution.h" |
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411 | #include "PassVisitor.impl.h" |
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