Mercurial > projects > dil
annotate trunk/src/dil/semantic/Pass1.d @ 683:1ae72234db26
Implemented some methods in SemanticPass1.
Renamed Symbol.ident to name.
Added a constructor to Symbol.
Adapted constructors of classes that inherit from Symbol.
Added Alias and OverloadSet Symbol classes.
Renamed idents and values to names and inits in VariablesDeclaration.
author | Aziz K?ksal <aziz.koeksal@gmail.com> |
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date | Mon, 21 Jan 2008 17:10:12 +0100 |
parents | 6b3e397229c5 |
children | e8c09d13f2a5 |
rev | line source |
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635 | 1 /++ |
2 Author: Aziz Köksal | |
3 License: GPL3 | |
4 +/ | |
5 module dil.semantic.Pass1; | |
6 | |
7 import dil.ast.Visitor; | |
8 import dil.ast.Node, | |
9 dil.ast.Declarations, | |
10 dil.ast.Expressions, | |
11 dil.ast.Statements, | |
12 dil.ast.Types, | |
13 dil.ast.Parameters; | |
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14 import dil.lexer.Identifier; |
635 | 15 import dil.semantic.Symbol, |
16 dil.semantic.Symbols, | |
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17 dil.semantic.Types, |
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18 dil.semantic.Scope, |
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19 dil.semantic.Module, |
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20 dil.semantic.Analysis; |
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21 import dil.Location; |
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22 import dil.Information; |
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23 import dil.Messages; |
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24 import dil.Enums; |
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25 import dil.CompilerInfo; |
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26 import common; |
635 | 27 |
28 class SemanticPass1 : Visitor | |
29 { | |
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30 Scope scop; /// The current scope. |
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31 Module modul; /// The module to be semantically checked. |
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32 |
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33 // Attributes: |
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34 LinkageType linkageType; |
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35 Protection protection; |
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36 StorageClass storageClass; |
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37 uint alignSize = DEFAULT_ALIGN_SIZE; |
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38 |
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39 this(Module modul) |
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40 { |
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41 this.modul = modul; |
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42 } |
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43 |
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44 /// Start semantic analysis. |
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45 void start() |
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46 { |
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47 assert(modul.root !is null); |
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48 // Create module scope. |
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49 scop = new Scope(); |
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50 scop.symbol = modul; // Set this module as the scope's symbol. |
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51 scop.infoMan = modul.infoMan; |
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52 visit(modul.root); |
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53 } |
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55 void enterScope(ScopeSymbol s) |
635 | 56 { |
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57 scop = scop.enter(s); |
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58 } |
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59 |
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60 void exitScope() |
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61 { |
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62 scop = scop.exit(); |
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63 } |
635 | 64 |
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65 /// Insert a symbol into the current scope. |
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66 void insert(Symbol sym, Identifier* ident) |
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67 { |
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68 auto sym2 = scop.symbol.lookup(ident); |
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69 if (sym2) |
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70 reportSymbolConflict(sym, sym2, ident); |
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71 else |
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72 scop.symbol.insert(sym, ident); |
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73 // Set the current scope symbol as the parent. |
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74 sym.parent = scop.symbol; |
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75 } |
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76 |
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77 /// Insert a symbol, overloading on the name, into the current scope. |
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78 void insertOverload(Symbol sym, Identifier* ident) |
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79 { |
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80 auto sym2 = scop.symbol.lookup(ident); |
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81 if (sym2) |
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82 { |
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83 if (sym2.isOverloadSet) |
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84 (cast(OverloadSet)cast(void*)sym2).add(sym); |
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85 else |
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86 reportSymbolConflict(sym, sym2, ident); |
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87 } |
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88 else |
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89 // Create a new overload set. |
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90 scop.symbol.insert(new OverloadSet(ident, sym.node), ident); |
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91 // Set the current scope symbol as the parent. |
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92 sym.parent = scop.symbol; |
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93 } |
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94 |
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95 /// Report error: new symbol s1 conflicts with existing symbol s2. |
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96 void reportSymbolConflict(Symbol s1, Symbol s2, Identifier* ident) |
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97 { |
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98 auto loc = s2.node.begin.getErrorLocation(); |
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99 auto locString = Format("{}({},{})", loc.filePath, loc.lineNum, loc.colNum); |
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100 error(s1.node.begin, MSG.DeclConflictsWithDecl, ident.str, locString); |
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101 } |
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102 |
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103 void error(Token* token, char[] formatMsg, ...) |
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104 { |
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105 auto location = token.getErrorLocation(); |
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106 auto msg = Format(_arguments, _argptr, formatMsg); |
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107 modul.infoMan ~= new SemanticError(location, msg); |
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108 } |
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109 |
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110 private alias Declaration D; |
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111 |
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113 { | |
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114 D visit(CompoundDeclaration d) |
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115 { |
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116 foreach (node; d.children) |
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117 { |
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118 assert(node.category == NodeCategory.Declaration, Format("{}", node)); |
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119 visitD(cast(Declaration)cast(void*)node); |
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120 } |
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121 return d; |
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122 } |
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123 |
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124 D visit(IllegalDeclaration) |
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125 { assert(0, "semantic pass on invalid AST"); return null; } |
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126 |
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127 D visit(EmptyDeclaration ed) |
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128 { return ed; } |
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129 |
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130 D visit(ModuleDeclaration) |
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131 { return null; } |
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132 D visit(ImportDeclaration) |
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133 { return null; } |
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134 |
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135 D visit(AliasDeclaration ad) |
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136 { |
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137 /+ |
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138 decl.semantic(scop); // call semantic() or do SA in if statements? |
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139 if (auto fd = TryCast!(FunctionDeclaration)(decl)) |
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140 { |
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141 // TODO: do SA here? |
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142 } |
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143 else if (auto vd = TryCast!(VariableDeclaration)(decl)) |
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144 { |
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145 // TODO: do SA here? |
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146 } |
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147 +/ |
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148 return ad; |
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149 } |
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150 |
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151 D visit(TypedefDeclaration td) |
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152 { |
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153 /+ |
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154 decl.semantic(scop); // call semantic() or do SA in if statements? |
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155 if (auto fd = TryCast!(FunctionDeclaration)(decl)) |
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156 { |
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157 // TODO: do SA here? |
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158 } |
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159 else if (auto vd = TryCast!(VariableDeclaration)(decl)) |
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160 { |
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161 // TODO: do SA here? |
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162 } |
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163 +/ |
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164 return td; |
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165 } |
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166 |
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167 D visit(EnumDeclaration d) |
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168 { |
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169 // Create the symbol. |
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170 d.symbol = new Enum(d.name, d); |
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171 if (d.name) |
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172 { // Declare named enum. |
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173 insert(d.symbol, d.name); |
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174 enterScope(d.symbol); |
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175 } |
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176 // Declare members. |
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177 foreach (member; d.members) |
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178 { |
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179 auto variable = new Variable(member.name, protection, storageClass, linkageType, member); |
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180 insert(variable, variable.name); |
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181 } |
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182 if (d.name) |
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183 exitScope(); |
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184 return d; |
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185 } |
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186 |
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187 D visit(EnumMemberDeclaration) |
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188 { return null; } |
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189 |
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190 D visit(ClassDeclaration d) |
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192 if (d.symbol) |
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193 return d; |
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194 d.symbol = new Class(d.name, d); |
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195 // Insert into current scope. |
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196 if (d.tparams) |
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197 insertOverload(d.symbol, d.name); |
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198 else |
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199 insert(d.symbol, d.name); |
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200 enterScope(d.symbol); |
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201 // Continue semantic analysis. |
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202 d.decls && visitD(d.decls); |
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203 exitScope(); |
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204 return d; |
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205 } |
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206 |
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207 D visit(InterfaceDeclaration d) |
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208 { |
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209 if (d.symbol) |
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210 return d; |
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211 d.symbol = new dil.semantic.Symbols.Interface(d.name, d); |
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212 // Insert into current scope. |
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213 if (d.tparams) |
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214 insertOverload(d.symbol, d.name); |
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215 else |
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216 insert(d.symbol, d.name); |
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217 enterScope(d.symbol); |
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218 // Continue semantic analysis. |
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219 d.decls && visitD(d.decls); |
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220 exitScope(); |
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221 return d; |
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222 } |
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223 |
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224 D visit(StructDeclaration d) |
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225 { |
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226 if (d.symbol) |
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227 return d; |
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228 d.symbol = new Struct(d.name, d); |
635 | 229 // Insert into current scope. |
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230 if (d.name) |
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231 { |
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232 if (d.tparams) |
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233 insertOverload(d.symbol, d.name); |
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234 else |
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235 insert(d.symbol, d.name); |
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236 } |
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237 enterScope(d.symbol); |
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238 // Continue semantic analysis. |
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239 d.decls && visitD(d.decls); |
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240 exitScope(); |
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241 return d; |
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242 } |
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243 |
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244 D visit(UnionDeclaration d) |
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245 { |
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246 if (d.symbol) |
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247 return d; |
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248 d.symbol = new Union(d.name, d); |
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249 // Insert into current scope. |
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250 if (d.name) |
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251 { |
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252 if (d.tparams) |
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253 insertOverload(d.symbol, d.name); |
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254 else |
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255 insert(d.symbol, d.name); |
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256 } |
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257 enterScope(d.symbol); |
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258 // Continue semantic analysis. |
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259 d.decls && visitD(d.decls); |
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260 exitScope(); |
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261 return d; |
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262 } |
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263 |
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264 D visit(ConstructorDeclaration) |
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265 { return null; } |
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266 D visit(StaticConstructorDeclaration) |
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267 { return null; } |
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268 D visit(DestructorDeclaration) |
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269 { return null; } |
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270 D visit(StaticDestructorDeclaration) |
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271 { return null; } |
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272 D visit(FunctionDeclaration) |
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273 { return null; } |
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274 |
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275 D visit(VariablesDeclaration vd) |
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276 { |
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277 // Error if we are in an interface. |
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278 if (scop.isInterface) |
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279 return error(vd.begin, MSG.InterfaceCantHaveVariables), vd; |
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280 |
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281 // Insert variable symbols in this declaration into the symbol table. |
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282 foreach (name; vd.names) |
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283 { |
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284 auto variable = new Variable(name, protection, storageClass, linkageType, vd); |
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285 vd.variables ~= variable; |
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286 insert(variable, name); |
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287 } |
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288 return vd; |
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289 } |
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290 |
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291 D visit(InvariantDeclaration) |
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292 { return null; } |
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293 D visit(UnittestDeclaration) |
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294 { return null; } |
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295 D visit(DebugDeclaration) |
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296 { return null; } |
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297 D visit(VersionDeclaration) |
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298 { return null; } |
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299 |
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300 D visit(StaticIfDeclaration d) |
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301 { |
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302 visitE(d.condition); |
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303 visitD(d.ifDecls); |
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304 d.elseDecls && visitD(d.elseDecls); |
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305 return null; |
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306 } |
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307 |
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308 D visit(StaticAssertDeclaration d) |
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309 { return d; } // SP2 |
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310 |
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311 D visit(TemplateDeclaration d) |
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312 { |
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313 if (d.symbol) |
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314 return d; |
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315 d.symbol = new Template(d.name, d); |
636
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316 // Insert into current scope. |
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317 insertOverload(d.symbol, d.name); |
636
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318 enterScope(d.symbol); |
635 | 319 // Continue semantic analysis. |
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320 visitD(d.decls); |
636
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321 exitScope(); |
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322 return d; |
635 | 323 } |
324 | |
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325 D visit(NewDeclaration) |
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326 { /*add id to env*/return null; } |
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327 D visit(DeleteDeclaration) |
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328 { /*add id to env*/return null; } |
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329 |
683
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330 D visit(ProtectionDeclaration d) |
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331 { |
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332 auto saved = protection; // Save. |
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333 protection = d.prot; // Set. |
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334 visitD(d.decls); |
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335 protection = saved; // Restore. |
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336 return d; |
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337 } |
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338 |
683
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339 D visit(StorageClassDeclaration d) |
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340 { |
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341 auto saved = storageClass; // Save. |
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342 storageClass = d.storageClass; // Set. |
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343 visitD(d.decls); |
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344 storageClass = saved; // Restore. |
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345 return d; |
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346 } |
649
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347 |
683
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348 D visit(LinkageDeclaration d) |
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349 { |
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350 auto saved = linkageType; // Save. |
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351 linkageType = d.linkageType; // Set. |
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352 visitD(d.decls); |
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353 linkageType = saved; // Restore. |
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354 return d; |
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355 } |
648
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356 |
683
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357 D visit(AlignDeclaration d) |
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358 { |
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359 auto saved = alignSize; // Save. |
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360 alignSize = d.size; // Set. |
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361 visitD(d.decls); |
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362 alignSize = saved; // Restore. |
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363 return d; |
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364 } |
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365 |
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366 D visit(PragmaDeclaration d) |
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367 { |
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368 pragmaSemantic(scop, d.begin, d.ident, d.args); |
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369 visitD(d.decls); |
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370 return d; |
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371 } |
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372 |
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373 Statement visit(PragmaStatement s) |
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parents:
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374 { |
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parents:
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375 pragmaSemantic(scop, s.begin, s.ident, s.args); |
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Moved some semantic() methods to SemanticPass1.
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parents:
646
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376 visitS(s.pragmaBody); |
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Moved some semantic() methods to SemanticPass1.
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parents:
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377 return s; |
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Moved some semantic() methods to SemanticPass1.
Aziz K?ksal <aziz.koeksal@gmail.com>
parents:
646
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378 } |
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Moved some semantic() methods to SemanticPass1.
Aziz K?ksal <aziz.koeksal@gmail.com>
parents:
646
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379 |
683
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Implemented some methods in SemanticPass1.
Aziz K?ksal <aziz.koeksal@gmail.com>
parents:
680
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380 D visit(MixinDeclaration md) |
645
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Moved semantic() methods of expressions to class SemanticPass1.
Aziz K?ksal <aziz.koeksal@gmail.com>
parents:
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381 { |
683
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parents:
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382 // Add md to vector of (Scope, MixinDeclaration) |
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parents:
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383 // and evaluate them in 2nd pass? |
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parents:
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384 // TODO: store all attributes in md; they have to be applied |
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parents:
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385 // to the content that is mixed in. |
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parents:
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386 return md; |
635 | 387 } |
388 } // override | |
389 } |