1 | #include "SynTree/Constant.h" |
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2 | #include "InitModel.h" |
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3 | |
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4 | #include <cassert> |
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5 | #include <cstdlib> |
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6 | #include <algorithm> |
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7 | |
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8 | namespace InitTweak { |
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9 | |
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10 | InitModelBuilder::InitModelBuilder( Declaration *_decl ) |
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11 | : taken( false ), decl( 0 ), building(0) { |
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12 | |
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13 | ObjectDecl *_odecl = dynamic_cast< ObjectDecl * >( _decl ); |
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14 | assert( _odecl != 0 ); |
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15 | Type *objectType = _odecl->get_type(); |
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16 | |
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17 | /* this to be replaced by dynamic dispatch */ |
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18 | if ( dynamic_cast< BasicType * >(objectType) != 0 ) { |
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19 | if ( building == 0 ) building = new SingleName; |
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20 | } else if ( ReferenceToType *rt = dynamic_cast< ReferenceToType * >(objectType) ) { |
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21 | rt->accept( *this ); |
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22 | } else if ( ArrayType *at = dynamic_cast< ArrayType * >(objectType) ) { |
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23 | at->accept( *this ); |
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24 | } else // if (tuples) |
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25 | std::cerr << "Got something else" << std::endl; |
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26 | |
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27 | if ( decl != 0 ) init(); |
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28 | } |
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29 | |
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30 | InitModelBuilder::~InitModelBuilder() { if ( ! taken ) { delete building; building = 0; } } |
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31 | |
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32 | void InitModelBuilder::init() { |
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33 | assert( decl != 0 ); |
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34 | decl->accept( *this ); |
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35 | } |
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36 | |
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37 | // Visitor interface |
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38 | void InitModelBuilder::visit( ArrayType *at ) { |
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39 | if ( building == 0 ) building = new RangeAssociation(interpretDimension( at->get_dimension() )); |
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40 | decl = 0; |
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41 | return; |
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42 | } |
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43 | |
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44 | void InitModelBuilder::visit( StructInstType *st ) { |
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45 | if ( building == 0 ) building = new PointAssociation; |
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46 | decl = st->get_baseStruct(); |
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47 | return; |
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48 | } |
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49 | |
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50 | void InitModelBuilder::visit( UnionInstType *ut ) { |
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51 | decl = ut->get_baseUnion(); |
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52 | return; |
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53 | } |
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54 | void InitModelBuilder::visit( EnumInstType * ) {} |
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55 | |
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56 | void InitModelBuilder::visit( StructDecl *aggregateDecl) { |
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57 | PointAssociation *pa = dynamic_cast< PointAssociation * >( building ); |
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58 | assert( pa != 0 ); |
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59 | std::list< Declaration * > mem = aggregateDecl->get_members(); |
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60 | |
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61 | for ( std::list<Declaration *>::iterator i = mem.begin(); i != mem.end(); i++ ) { |
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62 | pa->add_member( (*i)->get_name() ); |
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63 | InitModelBuilder rec(*i); |
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64 | pa->set_member( (*i)->get_name(), rec.grab_assoc() ); |
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65 | } |
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66 | |
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67 | return; |
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68 | } |
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69 | |
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70 | void InitModelBuilder::visit( UnionDecl *) {} |
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71 | void InitModelBuilder::visit( EnumDecl *) {} |
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72 | |
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73 | // InitModelBuilder::ConstantFolder |
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74 | void InitModelBuilder::ConstantFolder::visit( ConstantExpr *cnst ) { |
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75 | Constant *c = cnst->get_constant(); |
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76 | assert (c != 0); |
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77 | if ( BasicType *bt = dynamic_cast<BasicType *>( c->get_type() ) ) { |
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78 | if ( bt->isInteger() ) { |
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79 | // need more intelligence here, not necessarily base 10 |
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80 | value = std::strtol( c->get_value().c_str(), NULL, 10 ); |
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81 | return; |
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82 | } else |
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83 | std::cerr << "Basic type but not integer" << std::endl; |
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84 | } |
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85 | throw 0; |
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86 | } |
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87 | |
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88 | // InitModelFiller |
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89 | InitModelFiller::InitModelFiller( Association *_model, Initializer *_init, bool _topLevel ) |
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90 | : model( _model ), orgInit( _init ), topLevel( _topLevel ), next( 0 ) { |
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91 | //next = model.begin(); |
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92 | if ( orgInit != 0 ) init(); |
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93 | } |
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94 | |
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95 | void InitModelFiller::init() { |
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96 | assert( model != 0 ); // change it into a reference |
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97 | assert( orgInit != 0 ); |
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98 | orgInit->accept( *this ); |
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99 | } |
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100 | |
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101 | void InitModelFiller::visit( SingleInit *singleInit ) { |
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102 | std::list< Expression *> &des = singleInit->get_designators(); |
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103 | |
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104 | if ( topLevel ) { |
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105 | assert ( des.empty() ); |
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106 | assert ( dynamic_cast< SingleName * >(model) != 0 ); |
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107 | try { |
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108 | model->add_single( next++, singleInit->get_value() ); |
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109 | } catch (...) { |
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110 | std::cerr << "Illegal initialization" << std::endl; |
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111 | } |
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112 | return; |
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113 | } |
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114 | |
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115 | if ( des.empty() ) { |
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116 | assert( model != 0 ); |
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117 | try { |
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118 | model->add_single( next++, singleInit->get_value() ); |
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119 | } catch ( AssocException &e ) { |
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120 | throw SemanticError( "Illegal initialization: " + e.get_what() ); |
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121 | } catch ( ... ) { |
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122 | std::cerr << "Shouldn't be here" << std::endl; |
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123 | } |
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124 | return; |
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125 | } |
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126 | |
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127 | // not general enough (does not contend well with designated arrays) |
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128 | std::list<std::string> desnames; |
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129 | std::transform( des.begin(), des.end(), back_inserter(desnames), Initializer::designator_name ); |
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130 | |
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131 | for ( std::list<std::string>::iterator i = desnames.begin(); i != desnames.end(); i++ ) { |
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132 | try { |
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133 | next = model->add_single( *i, singleInit->get_value() ); |
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134 | next++; |
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135 | } catch ( AssocException &e ) { |
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136 | throw SemanticError( "Illegal initialization: " + e.get_what() ); |
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137 | } catch ( ... ) { |
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138 | std::cerr << "Shouldn't happen, check association" << std::endl; |
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139 | } |
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140 | } |
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141 | |
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142 | return; |
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143 | } |
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144 | |
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145 | void InitModelFiller::visit( ListInit *listInit ) { |
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146 | assert( listInit != 0 ); |
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147 | |
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148 | // designators |
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149 | std::list< Expression *> &des = listInit->get_designators(); |
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150 | std::list< Initializer *> &ini = listInit->get_initializers(); |
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151 | |
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152 | if (! des.empty() ) { |
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153 | if (topLevel) |
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154 | throw SemanticError( "Invalid initializer: designated at top level." ); |
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155 | |
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156 | std::list<Expression *> des2; |
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157 | std::copy (des.begin(), des.end(), back_inserter( des2 )); |
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158 | std::list< Expression * > empty; |
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159 | listInit->set_designators( empty ); |
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160 | for ( std::list<Expression *>::iterator i = des2.begin(); i != des2.end(); i++ ) { |
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161 | Association * newModel = 0; |
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162 | if ( NameExpr *n = dynamic_cast< NameExpr * >( *i ) ) |
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163 | try { |
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164 | newModel = (*model)[ n->get_name() ]; |
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165 | } catch( AssocException &e ) { |
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166 | std::cerr << "Didn't find member: " << e.get_what() << std::endl; |
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167 | } |
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168 | else // if ( RangeExpr *r = dynamic_cast< RangeExpr * >( *i ) ) |
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169 | std::cerr << "Invalid designator specification" << std::endl; |
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170 | |
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171 | InitModelFiller rec( newModel, listInit, true ); |
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172 | } |
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173 | |
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174 | } else |
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175 | if (topLevel) { |
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176 | topLevel = false; |
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177 | for ( std::list<Initializer*>::iterator i = ini.begin(); i != ini.end(); i++ ) |
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178 | (*i)->accept(*this); |
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179 | } else |
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180 | // next available uninitialized member |
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181 | InitModelFiller rec( (*model)[next++], listInit, true ); |
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182 | } |
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183 | |
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184 | void InitUnspooler::visit( SingleName *single ) { |
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185 | assert(init == 0 && single != 0); |
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186 | std::list< Expression * > empty; |
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187 | init = new SingleInit( single->get_expr(), empty ); |
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188 | return; |
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189 | } |
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190 | |
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191 | void InitUnspooler::visit( PointAssociation *pa ) { |
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192 | assert( pa != 0 ); |
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193 | |
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194 | std::list< Initializer * > contents; |
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195 | for ( int i = 0; i < pa->size(); i++ ) |
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196 | if ( (*pa)[i] != 0 ) { |
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197 | InitUnspooler rec; |
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198 | (*pa)[i]->accept( rec ); |
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199 | assert( rec.get_initializer() != 0 ); |
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200 | contents.push_back( rec.grab_initializer() ); |
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201 | } |
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202 | |
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203 | init = new ListInit( contents ); |
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204 | return; |
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205 | } |
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206 | |
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207 | |
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208 | |
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209 | } // namespace InitTweak |
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