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 | // BasicInit.cc -- |
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8 | // |
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9 | // Author : Rodolfo G. Esteves |
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10 | // Created On : Mon May 18 07:44:20 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Tue May 19 16:30:43 2015 |
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13 | // Update Count : 1 |
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14 | // |
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15 | |
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16 | #include <list> |
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17 | #include <cassert> |
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18 | #include <iostream> |
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19 | #include <iterator> |
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20 | #include <algorithm> |
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21 | |
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22 | #include "utility.h" |
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23 | |
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24 | #include "SynTree/Type.h" |
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25 | #include "SynTree/Statement.h" |
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26 | #include "SynTree/Expression.h" |
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27 | #include "SynTree/Declaration.h" |
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28 | #include "SynTree/Initializer.h" |
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29 | |
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30 | #include "BasicInit.h" |
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31 | #include "NameCollector.h" |
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32 | #include "NameAssociation.h" |
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33 | |
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34 | namespace InitTweak { |
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35 | CompoundStmt* BasicInit::mutate(CompoundStmt *compoundStmt) { |
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36 | index.visit( compoundStmt ); |
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37 | |
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38 | std::list< Statement * > &kids = compoundStmt->get_kids(); |
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39 | std::list< Statement * > newKids; |
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40 | |
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41 | for ( std::list< Statement * >::iterator i = kids.begin(); i!= kids.end(); i++ ) { |
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42 | //BasicInit newMut( ); |
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43 | (*i)->acceptMutator( *this ); |
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44 | newKids.push_back( *i ); |
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45 | |
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46 | if ( has_bindings() ) { // if ( get_bindings() != 0 ) { |
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47 | std::list< Statement *> newSt = get_statements(); |
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48 | //newSt.push_back( *i ); |
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49 | newKids.splice( newKids.end(), newSt ); |
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50 | bindings = 0; |
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51 | stmts.clear(); |
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52 | } // if |
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53 | } // for |
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54 | |
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55 | compoundStmt->get_kids() = newKids; |
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56 | return compoundStmt; |
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57 | } |
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58 | |
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59 | Statement * BasicInit::mutate(DeclStmt *declStmt) { |
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60 | declStmt->accept( index ); |
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61 | |
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62 | ObjectDecl *odecl = 0; |
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63 | |
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64 | if ( ( odecl = dynamic_cast<ObjectDecl *>(declStmt->get_decl()) ) != 0 ) { |
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65 | Initializer *init = odecl->get_init(); |
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66 | if ( init == 0 ) return declStmt; |
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67 | |
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68 | if ( Classify::type( odecl->get_type() ) == Classify::COMPOUND_T ) |
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69 | if ( Classify::initializer(init) == Classify::SINGLE_I ) |
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70 | throw( 0 ); // mismatch of type and initializer |
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71 | else { |
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72 | NameInCollection *col = Classify::declaration( odecl, &index ); |
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73 | bindings = NameAssociation< Expression *, BreakInitializer >::createNameAssoc(col); |
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74 | bindings->add_value( std::string(""), BreakInitializer(init) ); |
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75 | BasicInit::build_statements( bindings, odecl->get_name(), stmts ); |
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76 | } // if |
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77 | else |
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78 | if ( Classify::initializer(init) == Classify::COMPOUND_I ) |
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79 | throw( 0 ); // mismatch of type and initializer |
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80 | else { |
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81 | // Single inits |
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82 | SingleInit *sinit = dynamic_cast< SingleInit * > ( init ); |
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83 | assert( sinit != 0); |
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84 | |
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85 | std::list<Expression *> args; |
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86 | args.push_back( new AddressExpr( new NameExpr( odecl->get_name() )) ); // have to get address of object |
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87 | args.push_back( sinit->get_value() ); |
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88 | // replace declaration with initialization |
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89 | stmts.push_back(new ExprStmt(std::list<Label>(), new UntypedExpr(new NameExpr("?=?"), args))); |
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90 | } // if |
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91 | |
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92 | delete init; |
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93 | odecl->set_init( 0 ); |
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94 | } else { |
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95 | // no declaration statement |
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96 | } // if |
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97 | |
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98 | return declStmt; |
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99 | } |
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100 | |
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101 | ExprStmt *assignFromDecl( DeclStmt *declStmt ) { |
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102 | ObjectDecl *decl; |
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103 | if ( (decl = dynamic_cast<ObjectDecl *>( declStmt->get_decl() )) != 0 ) { |
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104 | SingleInit *init; |
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105 | if ( (init = dynamic_cast<SingleInit *>(decl->get_init())) != 0 ) { |
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106 | } // if |
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107 | } // if |
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108 | |
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109 | return 0; |
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110 | } |
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111 | |
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112 | bool isDeclStmtP(Statement *stmt) { |
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113 | return ( dynamic_cast< DeclStmt *>(stmt) != 0 ); |
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114 | } |
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115 | |
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116 | BasicInit::Classify::TypeKind BasicInit::Classify::type( Type *toClassify ) { |
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117 | if ( toClassify == 0 ) return NULL_T; |
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118 | |
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119 | if ( dynamic_cast< StructInstType * >(toClassify) || |
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120 | dynamic_cast< UnionInstType * >(toClassify) || |
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121 | dynamic_cast< ArrayType * >(toClassify) ) |
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122 | return COMPOUND_T; |
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123 | else |
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124 | return SINGLE_T; |
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125 | } |
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126 | |
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127 | BasicInit::Classify::InitKind BasicInit::Classify::initializer( Initializer *init) { |
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128 | if ( init == 0 ) return NULL_I; |
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129 | if ( dynamic_cast< ListInit * >(init) ) |
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130 | return COMPOUND_I; |
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131 | if ( dynamic_cast< SingleInit * >(init) ) |
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132 | return SINGLE_I; |
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133 | |
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134 | return NULL_I; // shouldn't be here anyways |
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135 | } |
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136 | |
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137 | NameInCollection * BasicInit::Classify::declaration( ObjectDecl *objdecl, SymTab::Indexer *index ) { |
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138 | assert ( index != 0 ); |
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139 | |
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140 | ReferenceToType *reftype; |
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141 | if ( (reftype = dynamic_cast< StructInstType * >( objdecl->get_type() )) != 0 ) { |
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142 | StructDecl *strDecl = index->lookupStruct( reftype->get_name() ); |
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143 | if ( strDecl != 0 ) { |
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144 | NameCollectionBuilder bld; |
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145 | NameCollector nc( bld ); |
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146 | strDecl->accept( nc ); |
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147 | NameInCollection *col = nc.get_builder().get_collection(); |
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148 | nc.get_builder().set_collection( 0 ); |
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149 | |
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150 | return col; |
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151 | } else |
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152 | throw( SemanticError( std::string("No structure of name: ") + reftype->get_name() ) ); |
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153 | } else { |
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154 | throw(SemanticError( reftype->get_name() + std::string("is not a reference to type") )); |
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155 | return 0; |
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156 | } // if |
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157 | } |
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158 | |
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159 | std::list< Statement * > |
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160 | BasicInit::Classify::matchInit( NameInCollection *col, ObjectDecl *toInitialize, Initializer *init ) { |
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161 | assert ( col != 0 ); |
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162 | |
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163 | std::list< Statement * > arranged(0); //( col->size() ); |
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164 | std::fill( arranged.begin(), arranged.end(), (Statement *)0 ); |
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165 | int current = 0; |
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166 | |
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167 | if ( init == 0 ) |
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168 | // no initializer... shouldn't even bother... fix this. |
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169 | return arranged; |
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170 | |
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171 | ListInit *li = dynamic_cast< ListInit * >( init ); |
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172 | |
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173 | if ( li != 0 ) { |
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174 | for ( std::list<Initializer *>::iterator i = li->begin_initializers(); |
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175 | i != li->end_initializers(); |
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176 | i++) { |
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177 | std::list<Expression *> d_orig = (*i)->get_designators(); |
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178 | |
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179 | NameInCollection *corrsp; // corresponding element to this initializer |
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180 | if ( ! d_orig.empty() ) { |
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181 | // 1) has designators |
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182 | std::list<NameExpr *> des; |
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183 | std::transform( d_orig.begin(), d_orig.end(), |
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184 | std::back_inserter( des ), cast_ptr<Expression, NameExpr > ); |
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185 | |
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186 | for ( std::list<NameExpr *>::iterator j = des.begin(); j != des.end(); j++ ) { |
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187 | // check for existence of the element |
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188 | |
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189 | if ( (corrsp = (*col)[ (*j)->get_name() ]) != 0 ) { |
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190 | // current++; |
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191 | SingleInit *sinit; |
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192 | if ( (sinit = dynamic_cast< SingleInit * >( *i )) != 0 ) |
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193 | arranged.push_back( constructAssgn( corrsp->get_name(), toInitialize, sinit ) ); |
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194 | else |
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195 | ; // recursive call to matchInit |
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196 | } else |
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197 | // error, member doesn't exist |
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198 | return arranged; // throw( 0 ); // XXX |
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199 | } |
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200 | } else { |
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201 | // 2) doesn't have designators |
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202 | if ( (corrsp = (*col)[ current++ ]) != 0 ) { |
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203 | SingleInit *sinit; |
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204 | if ( (sinit = dynamic_cast< SingleInit * >( *i )) != 0 ) |
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205 | arranged.push_back( constructAssgn( corrsp->get_name(), toInitialize, sinit ) ); |
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206 | else |
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207 | ; // recursive call to matchInit |
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208 | } else { |
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209 | // Shouldn't be here... probably too many elements in initializer? |
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210 | } // if |
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211 | } // if |
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212 | } // for |
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213 | } // if |
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214 | |
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215 | return arranged; |
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216 | } |
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217 | |
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218 | Statement *BasicInit::Classify::constructAssgn( std::string membName, ObjectDecl *toInit, SingleInit *sinit ) { |
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219 | std::list< Expression * > args; |
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220 | args.push_back(new AddressExpr( new UntypedMemberExpr( membName, new NameExpr(toInit->get_name()) ))); |
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221 | args.push_back( sinit->get_value() ); |
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222 | Statement *ret = new ExprStmt(std::list<Label>(), new UntypedExpr(new NameExpr("?=?"), args)); |
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223 | return ret; |
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224 | } |
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225 | |
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226 | void BasicInit::build_statements( NameAssociation< Expression *, BreakInitializer > *assoc, std::string aggName, std::list< Statement *> &stmts ) { |
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227 | assert( assoc != 0 ); |
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228 | static std::list< std::string > prefix; |
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229 | |
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230 | NameInCollection *col = assoc->get_collection(); |
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231 | if ( col->isComposite() ) { |
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232 | VariousNames *vc = dynamic_cast< VariousNames * >( col ); |
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233 | for ( VariousNames::key_iterator it = vc->keys_begin(); it != vc->keys_end(); it++ ) { |
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234 | prefix.push_back( *it ); |
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235 | if ( (*assoc)[ *it ] != 0 ) |
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236 | build_statements( (*assoc)[ *it ], aggName, stmts ); |
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237 | |
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238 | prefix.pop_back(); |
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239 | } |
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240 | } else { |
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241 | SingleNameAssoc< Expression *, BreakInitializer > *sa = \ |
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242 | dynamic_cast< SingleNameAssoc< Expression *, BreakInitializer > * >( assoc ); |
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243 | assert( sa != 0 ); |
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244 | |
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245 | Expression * rh = sa->get_data(); |
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246 | |
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247 | if (rh != 0) { |
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248 | // construct assignment statement list |
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249 | Expression *lh = new NameExpr ( aggName ); |
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250 | for ( std::list< std::string >::iterator i = prefix.begin(); i != prefix.end(); i++ ) |
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251 | lh = new UntypedMemberExpr( *i, lh ); |
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252 | |
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253 | std::list< Expression * > args; |
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254 | args.push_back( new AddressExpr(lh) ); args.push_back( rh ); |
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255 | |
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256 | stmts.push_back( new ExprStmt(std::list<Label>(), new UntypedExpr(new NameExpr("?=?"), args)) ); |
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257 | } // if |
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258 | } // if |
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259 | |
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260 | return; |
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261 | } |
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262 | } // namespace InitTweak |
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263 | |
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264 | // Local Variables: // |
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265 | // tab-width: 4 // |
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266 | // mode: c++ // |
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267 | // compile-command: "make install" // |
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268 | // End: // |
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