annotate dmd/VarDeclaration.d @ 16:5c9b78899f5d

Implemented methods for Tuples, fixed some linking issues.
author Robert Clipsham <robert@octarineparrot.com>
date Sun, 04 Apr 2010 22:41:11 +0100
parents 10317f0c89a5
children fd4acc376c45
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1 module dmd.VarDeclaration;
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2
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3 import dmd.Declaration;
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4 import dmd.SliceExp;
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5 import dmd.ClassDeclaration;
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6 import dmd.DeleteExp;
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7 import dmd.SymOffExp;
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8 import dmd.DotIdExp;
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9 import dmd.PtrExp;
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10 import dmd.CallExp;
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11 import dmd.DotVarExp;
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12 import dmd.CommaExp;
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13 import dmd.CastExp;
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14 import dmd.WANT;
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15 import dmd.StructDeclaration;
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16 import dmd.DsymbolExp;
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17 import dmd.TypeSArray;
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18 import dmd.IntegerExp;
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19 import dmd.VarExp;
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20 import dmd.AssignExp;
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21 import dmd.TypeTypedef;
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22 import dmd.ArrayInitializer;
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23 import dmd.StructInitializer;
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24 import dmd.NewExp;
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25 import dmd.TupleDeclaration;
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26 import dmd.AggregateDeclaration;
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27 import dmd.InterfaceDeclaration;
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28 import dmd.TemplateInstance;
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29 import dmd.Id;
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30 import dmd.Initializer;
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31 import dmd.TypeStruct;
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32 import dmd.TypeTuple;
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33 import dmd.Argument;
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34 import dmd.ExpInitializer;
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35 import dmd.ArrayTypes;
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36 import dmd.Dsymbol;
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37 import dmd.Expression;
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38 import dmd.Loc;
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39 import dmd.STC;
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40 import dmd.TOK;
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41 import dmd.TupleExp;
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42 import dmd.Global;
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43 import dmd.FuncDeclaration;
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44 import dmd.Type;
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45 import dmd.TY;
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46 import dmd.LINK;
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47 import dmd.Scope;
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48 import dmd.Identifier;
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49 import dmd.OutBuffer;
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50 import dmd.HdrGenState;
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51 import dmd.PROT;
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52
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53 import dmd.backend.Symbol;
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54 import dmd.backend.TYM;
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55 import dmd.backend.FL;
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56 import dmd.backend.DT;
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57 import dmd.backend.mTY;
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58 import dmd.backend.SC;
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59 import dmd.backend.mTYman;
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60 import dmd.backend.TYPE;
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61 import dmd.backend.Util;
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62 import dmd.backend.LIST;
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63
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64 import std.stdio : writef;
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65 import std.string : toStringz;
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66
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67 class VarDeclaration : Declaration
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68 {
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69 Initializer init;
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70 uint offset;
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71 bool noauto; // no auto semantics
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72 version (DMDV2) {
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73 FuncDeclarations nestedrefs; // referenced by these lexically nested functions
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74 } else {
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75 int nestedref; // referenced by a lexically nested function
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76 }
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77 int ctorinit; // it has been initialized in a ctor
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78 int onstack; // 1: it has been allocated on the stack
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79 // 2: on stack, run destructor anyway
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80 int canassign; // it can be assigned to
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81 Dsymbol aliassym; // if redone as alias to another symbol
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82 Expression value; // when interpreting, this is the value
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83 // (null if value not determinable)
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84 version (DMDV2) {
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85 VarDeclaration rundtor; // if !null, rundtor is tested at runtime to see
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86 // if the destructor should be run. Used to prevent
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87 // dtor calls on postblitted vars
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88 }
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89
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90 this(Loc loc, Type type, Identifier id, Initializer init)
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91 {
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92 super(id);
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93
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94 debug {
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95 if (!type && !init)
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96 {
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97 writef("VarDeclaration('%s')\n", id.toChars());
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98 //*(char*)0=0;
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99 }
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100 }
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101 assert(type || init);
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102 this.type = type;
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103 this.init = init;
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104 this.loc = loc;
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105
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106 nestedrefs = new FuncDeclarations();
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107 }
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108
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109 Dsymbol syntaxCopy(Dsymbol s)
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110 {
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111 //printf("VarDeclaration.syntaxCopy(%s)\n", toChars());
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112
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113 VarDeclaration sv;
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114 if (s)
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115 {
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116 sv = cast(VarDeclaration)s;
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117 }
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118 else
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119 {
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120 Initializer init = null;
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121 if (this.init)
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122 {
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123 init = this.init.syntaxCopy();
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124 //init.isExpInitializer().exp.print();
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125 //init.isExpInitializer().exp.dump(0);
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126 }
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127
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128 sv = new VarDeclaration(loc, type ? type.syntaxCopy() : null, ident, init);
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129 sv.storage_class = storage_class;
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130 }
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131
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132 version (_DH) {
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133 // Syntax copy for header file
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134 if (!htype) // Don't overwrite original
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135 {
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136 if (type) // Make copy for both old and new instances
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137 { htype = type.syntaxCopy();
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138 sv.htype = type.syntaxCopy();
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139 }
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140 }
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141 else // Make copy of original for new instance
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142 sv.htype = htype.syntaxCopy();
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143 if (!hinit)
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144 {
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145 if (init)
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146 {
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147 hinit = init.syntaxCopy();
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148 sv.hinit = init.syntaxCopy();
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149 }
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150 }
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151 else
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152 sv.hinit = hinit.syntaxCopy();
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153 }
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154 return sv;
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155 }
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156
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157 void semantic(Scope sc)
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158 {
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159 static if (false) {
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160 printf("VarDeclaration.semantic('%s', parent = '%s')\n", toChars(), sc.parent.toChars());
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161 printf(" type = %s\n", type ? type.toChars() : "null");
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162 printf(" stc = x%x\n", sc.stc);
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163 printf(" storage_class = x%x\n", storage_class);
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164 printf("linkage = %d\n", sc.linkage);
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165 //if (strcmp(toChars(), "mul") == 0) halt();
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166 }
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167
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168 storage_class |= sc.stc;
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169 if (storage_class & STC.STCextern && init)
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170 error("extern symbols cannot have initializers");
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171
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172 /* If auto type inference, do the inference
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173 */
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174 int inferred = 0;
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175 if (!type)
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176 {
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177 inuse++;
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178 type = init.inferType(sc);
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179 inuse--;
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180 inferred = 1;
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181
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182 /* This is a kludge to support the existing syntax for RAII
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183 * declarations.
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184 */
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185 storage_class &= ~STC.STCauto;
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186 originalType = type;
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187 }
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188 else
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189 {
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190 if (!originalType)
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191 originalType = type;
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192
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193 type = type.semantic(loc, sc);
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194 }
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195 //printf(" semantic type = %s\n", type ? type.toChars() : "null");
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196
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197 type.checkDeprecated(loc, sc);
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198 linkage = sc.linkage;
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199 this.parent = sc.parent;
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200 //printf("this = %p, parent = %p, '%s'\n", this, parent, parent.toChars());
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201 protection = sc.protection;
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202 //printf("sc.stc = %x\n", sc.stc);
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203 //printf("storage_class = x%x\n", storage_class);
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204
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205 version (DMDV2) {
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206 if (storage_class & STC.STCgshared && global.params.safe && !sc.module_.safe)
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207 {
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208 error("__gshared not allowed in safe mode; use shared");
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209 }
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210 }
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211
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212 Dsymbol parent = toParent();
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213 FuncDeclaration fd = parent.isFuncDeclaration();
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214
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215 Type tb = type.toBasetype();
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216 if (tb.ty == TY.Tvoid && !(storage_class & STC.STClazy))
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217 { error("voids have no value");
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218 type = Type.terror;
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219 tb = type;
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220 }
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221 if (tb.ty == TY.Tfunction)
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222 { error("cannot be declared to be a function");
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223 type = Type.terror;
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224 tb = type;
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225 }
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diff changeset
226 if (tb.ty == TY.Tstruct)
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parents:
diff changeset
227 { TypeStruct ts = cast(TypeStruct)tb;
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parents:
diff changeset
228
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parents:
diff changeset
229 if (!ts.sym.members)
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parents:
diff changeset
230 {
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parents:
diff changeset
231 error("no definition of struct %s", ts.toChars());
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parents:
diff changeset
232 }
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parents:
diff changeset
233 }
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parents:
diff changeset
234
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parents:
diff changeset
235 if (tb.ty == TY.Ttuple)
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parents:
diff changeset
236 { /* Instead, declare variables for each of the tuple elements
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parents:
diff changeset
237 * and add those.
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parents:
diff changeset
238 */
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parents:
diff changeset
239 TypeTuple tt = cast(TypeTuple)tb;
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parents:
diff changeset
240 size_t nelems = Argument.dim(tt.arguments);
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parents:
diff changeset
241 Objects exps = new Objects();
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parents:
diff changeset
242 exps.setDim(nelems);
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parents:
diff changeset
243 Expression ie = init ? init.toExpression() : null;
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parents:
diff changeset
244
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parents:
diff changeset
245 for (size_t i = 0; i < nelems; i++)
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parents:
diff changeset
246 { Argument arg = Argument.getNth(tt.arguments, i);
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parents:
diff changeset
247
16
5c9b78899f5d Implemented methods for Tuples, fixed some linking issues.
Robert Clipsham <robert@octarineparrot.com>
parents: 0
diff changeset
248 OutBuffer buf = new OutBuffer();
0
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parents:
diff changeset
249 buf.printf("_%s_field_%zu", ident.toChars(), i);
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parents:
diff changeset
250 buf.writeByte(0);
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parents:
diff changeset
251 string name = buf.extractString();
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parents:
diff changeset
252 Identifier id = new Identifier(name, TOK.TOKidentifier);
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parents:
diff changeset
253
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parents:
diff changeset
254 Expression einit = ie;
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parents:
diff changeset
255 if (ie && ie.op == TOK.TOKtuple)
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korDen
parents:
diff changeset
256 { einit = cast(Expression)(cast(TupleExp)ie).exps.data[i];
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parents:
diff changeset
257 }
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parents:
diff changeset
258 Initializer ti = init;
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parents:
diff changeset
259 if (einit)
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korDen
parents:
diff changeset
260 { ti = new ExpInitializer(einit.loc, einit);
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parents:
diff changeset
261 }
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parents:
diff changeset
262
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parents:
diff changeset
263 VarDeclaration v = new VarDeclaration(loc, arg.type, id, ti);
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parents:
diff changeset
264 //printf("declaring field %s of type %s\n", v.toChars(), v.type.toChars());
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parents:
diff changeset
265 v.semantic(sc);
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parents:
diff changeset
266
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korDen
parents:
diff changeset
267 if (sc.scopesym)
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parents:
diff changeset
268 { //printf("adding %s to %s\n", v.toChars(), sc.scopesym.toChars());
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parents:
diff changeset
269 if (sc.scopesym.members)
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parents:
diff changeset
270 sc.scopesym.members.push(cast(void*)v);
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parents:
diff changeset
271 }
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parents:
diff changeset
272
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parents:
diff changeset
273 Expression e = new DsymbolExp(loc, v);
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parents:
diff changeset
274 exps.data[i] = cast(void*)e;
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parents:
diff changeset
275 }
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parents:
diff changeset
276 TupleDeclaration v2 = new TupleDeclaration(loc, ident, exps);
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parents:
diff changeset
277 v2.isexp = 1;
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parents:
diff changeset
278 aliassym = v2;
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parents:
diff changeset
279 return;
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parents:
diff changeset
280 }
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parents:
diff changeset
281
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korDen
parents:
diff changeset
282 Lagain:
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parents:
diff changeset
283 /* Storage class can modify the type
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parents:
diff changeset
284 */
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parents:
diff changeset
285 type = type.addStorageClass(storage_class);
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parents:
diff changeset
286
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korDen
parents:
diff changeset
287 /* Adjust storage class to reflect type
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parents:
diff changeset
288 */
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korDen
parents:
diff changeset
289 if (type.isConst())
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korDen
parents:
diff changeset
290 { storage_class |= STC.STCconst;
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korDen
parents:
diff changeset
291 if (type.isShared())
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parents:
diff changeset
292 storage_class |= STC.STCshared;
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parents:
diff changeset
293 }
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parents:
diff changeset
294 else if (type.isInvariant())
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parents:
diff changeset
295 storage_class |= STC.STCimmutable;
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parents:
diff changeset
296 else if (type.isShared())
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parents:
diff changeset
297 storage_class |= STC.STCshared;
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parents:
diff changeset
298
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korDen
parents:
diff changeset
299 if (isSynchronized())
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korDen
parents:
diff changeset
300 {
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korDen
parents:
diff changeset
301 error("variable %s cannot be synchronized", toChars());
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korDen
parents:
diff changeset
302 }
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korDen
parents:
diff changeset
303 else if (isOverride())
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korDen
parents:
diff changeset
304 {
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korDen
parents:
diff changeset
305 error("override cannot be applied to variable");
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korDen
parents:
diff changeset
306 }
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korDen
parents:
diff changeset
307 else if (isAbstract())
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korDen
parents:
diff changeset
308 {
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korDen
parents:
diff changeset
309 error("abstract cannot be applied to variable");
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korDen
parents:
diff changeset
310 }
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korDen
parents:
diff changeset
311 else if (storage_class & STC.STCfinal)
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korDen
parents:
diff changeset
312 {
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korDen
parents:
diff changeset
313 error("final cannot be applied to variable");
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korDen
parents:
diff changeset
314 }
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korDen
parents:
diff changeset
315
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korDen
parents:
diff changeset
316 if (storage_class & (STC.STCstatic | STC.STCextern | STC.STCmanifest | STC.STCtemplateparameter | STC.STCtls | STC.STCgshared))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
317 {
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korDen
parents:
diff changeset
318 }
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korDen
parents:
diff changeset
319 else
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korDen
parents:
diff changeset
320 {
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korDen
parents:
diff changeset
321 AggregateDeclaration aad = sc.anonAgg;
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korDen
parents:
diff changeset
322 if (!aad)
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korDen
parents:
diff changeset
323 aad = parent.isAggregateDeclaration();
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korDen
parents:
diff changeset
324 if (aad)
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korDen
parents:
diff changeset
325 {
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korDen
parents:
diff changeset
326 ///version (DMDV2) {
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korDen
parents:
diff changeset
327 assert(!(storage_class & (STC.STCextern | STC.STCstatic | STC.STCtls | STC.STCgshared)));
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korDen
parents:
diff changeset
328
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korDen
parents:
diff changeset
329 if (storage_class & (STC.STCconst | STC.STCimmutable) && init)
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korDen
parents:
diff changeset
330 {
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korDen
parents:
diff changeset
331 if (!type.toBasetype().isTypeBasic())
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korDen
parents:
diff changeset
332 storage_class |= STC.STCstatic;
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korDen
parents:
diff changeset
333 }
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korDen
parents:
diff changeset
334 else
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korDen
parents:
diff changeset
335 ///}
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korDen
parents:
diff changeset
336 aad.addField(sc, this);
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korDen
parents:
diff changeset
337 }
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korDen
parents:
diff changeset
338
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korDen
parents:
diff changeset
339 InterfaceDeclaration id = parent.isInterfaceDeclaration();
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korDen
parents:
diff changeset
340 if (id)
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korDen
parents:
diff changeset
341 {
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korDen
parents:
diff changeset
342 error("field not allowed in interface");
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korDen
parents:
diff changeset
343 }
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korDen
parents:
diff changeset
344
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korDen
parents:
diff changeset
345 /* Templates cannot add fields to aggregates
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korDen
parents:
diff changeset
346 */
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korDen
parents:
diff changeset
347 TemplateInstance ti = parent.isTemplateInstance();
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korDen
parents:
diff changeset
348 if (ti)
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korDen
parents:
diff changeset
349 {
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korDen
parents:
diff changeset
350 // Take care of nested templates
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korDen
parents:
diff changeset
351 while (1)
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korDen
parents:
diff changeset
352 {
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korDen
parents:
diff changeset
353 TemplateInstance ti2 = ti.tempdecl.parent.isTemplateInstance();
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korDen
parents:
diff changeset
354 if (!ti2)
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korDen
parents:
diff changeset
355 break;
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korDen
parents:
diff changeset
356 ti = ti2;
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korDen
parents:
diff changeset
357 }
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korDen
parents:
diff changeset
358
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korDen
parents:
diff changeset
359 // If it's a member template
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korDen
parents:
diff changeset
360 AggregateDeclaration ad = ti.tempdecl.isMember();
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korDen
parents:
diff changeset
361 if (ad && storage_class != STC.STCundefined)
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korDen
parents:
diff changeset
362 {
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korDen
parents:
diff changeset
363 error("cannot use template to add field to aggregate '%s'", ad.toChars());
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korDen
parents:
diff changeset
364 }
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korDen
parents:
diff changeset
365 }
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korDen
parents:
diff changeset
366 }
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korDen
parents:
diff changeset
367
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korDen
parents:
diff changeset
368 version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
369 if ((storage_class & (STC.STCref | STC.STCparameter | STC.STCforeach)) == STC.STCref && ident != Id.This)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
370 {
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korDen
parents:
diff changeset
371 error("only parameters or foreach declarations can be ref");
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korDen
parents:
diff changeset
372 }
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korDen
parents:
diff changeset
373 }
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korDen
parents:
diff changeset
374
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korDen
parents:
diff changeset
375 if (type.isauto() && !noauto)
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korDen
parents:
diff changeset
376 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
377 if (storage_class & (STC.STCfield | STC.STCout | STC.STCref | STC.STCstatic | STC.STCmanifest | STC.STCtls | STC.STCgshared) || !fd)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
378 {
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korDen
parents:
diff changeset
379 error("globals, statics, fields, manifest constants, ref and out parameters cannot be scope");
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
380 }
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korDen
parents:
diff changeset
381
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
382 if (!(storage_class & (STC.STCauto | STC.STCscope)))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
383 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
384 if (!(storage_class & STC.STCparameter) && ident != Id.withSym)
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korDen
parents:
diff changeset
385 error("reference to scope class must be scope");
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korDen
parents:
diff changeset
386 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
387 }
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korDen
parents:
diff changeset
388
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korDen
parents:
diff changeset
389 if ((isConst() || isInvariant()) && !init && !fd)
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korDen
parents:
diff changeset
390 {
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korDen
parents:
diff changeset
391 // Initialize by constructor only
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korDen
parents:
diff changeset
392 storage_class |= STC.STCctorinit;
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korDen
parents:
diff changeset
393 }
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korDen
parents:
diff changeset
394
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korDen
parents:
diff changeset
395 if (init)
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korDen
parents:
diff changeset
396 storage_class |= STC.STCinit; // remember we had an explicit initializer
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korDen
parents:
diff changeset
397 else if (storage_class & STC.STCmanifest)
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korDen
parents:
diff changeset
398 error("manifest constants must have initializers");
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korDen
parents:
diff changeset
399
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korDen
parents:
diff changeset
400 TOK op = TOK.TOKconstruct;
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korDen
parents:
diff changeset
401 if (!init && !sc.inunion && !isStatic() && fd &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
402 (!(storage_class & (STC.STCfield | STC.STCin | STC.STCforeach | STC.STCparameter)) || (storage_class & STC.STCout)) &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
403 type.size() != 0)
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korDen
parents:
diff changeset
404 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
405 // Provide a default initializer
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korDen
parents:
diff changeset
406 //printf("Providing default initializer for '%s'\n", toChars());
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korDen
parents:
diff changeset
407 if (type.ty == TY.Tstruct &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
408 (cast(TypeStruct)type).sym.zeroInit)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
409 { /* If a struct is all zeros, as a special case
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
410 * set it's initializer to the integer 0.
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korDen
parents:
diff changeset
411 * In AssignExp.toElem(), we check for this and issue
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
412 * a memset() to initialize the struct.
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korDen
parents:
diff changeset
413 * Must do same check in interpreter.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
414 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
415 Expression e = new IntegerExp(loc, 0, Type.tint32);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
416 Expression e1;
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korDen
parents:
diff changeset
417 e1 = new VarExp(loc, this);
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korDen
parents:
diff changeset
418 e = new AssignExp(loc, e1, e);
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korDen
parents:
diff changeset
419 e.op = TOK.TOKconstruct;
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korDen
parents:
diff changeset
420 e.type = e1.type; // don't type check this, it would fail
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korDen
parents:
diff changeset
421 init = new ExpInitializer(loc, e);
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korDen
parents:
diff changeset
422 return;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
423 }
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korDen
parents:
diff changeset
424 else if (type.ty == TY.Ttypedef)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
425 { TypeTypedef td = cast(TypeTypedef)type;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
426 if (td.sym.init)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
427 { init = td.sym.init;
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korDen
parents:
diff changeset
428 ExpInitializer ie = init.isExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
429 if (ie)
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korDen
parents:
diff changeset
430 // Make copy so we can modify it
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korDen
parents:
diff changeset
431 init = new ExpInitializer(ie.loc, ie.exp);
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korDen
parents:
diff changeset
432 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
433 else
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korDen
parents:
diff changeset
434 init = getExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
435 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
436 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
437 {
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korDen
parents:
diff changeset
438 init = getExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
439 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
440 // Default initializer is always a blit
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
441 op = TOK.TOKblit;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
442 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
443
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
444 if (init)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
445 {
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korDen
parents:
diff changeset
446 sc = sc.push();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
447 sc.stc &= ~(STC.STC_TYPECTOR | STC.STCpure | STC.STCnothrow | STC.STCref);
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korDen
parents:
diff changeset
448
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korDen
parents:
diff changeset
449 ArrayInitializer ai = init.isArrayInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
450 if (ai && tb.ty == TY.Taarray)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
451 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
452 init = ai.toAssocArrayInitializer();
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korDen
parents:
diff changeset
453 }
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korDen
parents:
diff changeset
454
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korDen
parents:
diff changeset
455 StructInitializer si = init.isStructInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
456 ExpInitializer ei = init.isExpInitializer();
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korDen
parents:
diff changeset
457
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korDen
parents:
diff changeset
458 // See if initializer is a NewExp that can be allocated on the stack
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korDen
parents:
diff changeset
459 if (ei && isScope() && ei.exp.op == TOK.TOKnew)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
460 { NewExp ne = cast(NewExp)ei.exp;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
461 if (!(ne.newargs && ne.newargs.dim))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
462 { ne.onstack = 1;
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korDen
parents:
diff changeset
463 onstack = 1;
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korDen
parents:
diff changeset
464 if (type.isBaseOf(ne.newtype.semantic(loc, sc), null))
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korDen
parents:
diff changeset
465 onstack = 2;
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korDen
parents:
diff changeset
466 }
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korDen
parents:
diff changeset
467 }
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korDen
parents:
diff changeset
468
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korDen
parents:
diff changeset
469 // If inside function, there is no semantic3() call
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korDen
parents:
diff changeset
470 if (sc.func)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
471 {
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korDen
parents:
diff changeset
472 // If local variable, use AssignExp to handle all the various
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
473 // possibilities.
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korDen
parents:
diff changeset
474 if (fd &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
475 !(storage_class & (STC.STCmanifest | STC.STCstatic | STC.STCtls | STC.STCgshared | STC.STCextern)) &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
476 !init.isVoidInitializer())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
477 {
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korDen
parents:
diff changeset
478 //printf("fd = '%s', var = '%s'\n", fd.toChars(), toChars());
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korDen
parents:
diff changeset
479 if (!ei)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
480 {
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korDen
parents:
diff changeset
481 Expression e = init.toExpression();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
482 if (!e)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
483 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
484 init = init.semantic(sc, type);
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korDen
parents:
diff changeset
485 e = init.toExpression();
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korDen
parents:
diff changeset
486 if (!e)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
487 { error("is not a static and cannot have static initializer");
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korDen
parents:
diff changeset
488 return;
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korDen
parents:
diff changeset
489 }
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korDen
parents:
diff changeset
490 }
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korDen
parents:
diff changeset
491 ei = new ExpInitializer(init.loc, e);
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korDen
parents:
diff changeset
492 init = ei;
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korDen
parents:
diff changeset
493 }
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korDen
parents:
diff changeset
494
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korDen
parents:
diff changeset
495 Expression e1 = new VarExp(loc, this);
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korDen
parents:
diff changeset
496
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korDen
parents:
diff changeset
497 Type t = type.toBasetype();
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korDen
parents:
diff changeset
498 if (t.ty == TY.Tsarray && !(storage_class & (STC.STCref | STC.STCout)))
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korDen
parents:
diff changeset
499 {
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korDen
parents:
diff changeset
500 ei.exp = ei.exp.semantic(sc);
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korDen
parents:
diff changeset
501 if (!ei.exp.implicitConvTo(type))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
502 {
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korDen
parents:
diff changeset
503 int dim = cast(int)(cast(TypeSArray)t).dim.toInteger(); ///
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korDen
parents:
diff changeset
504 // If multidimensional static array, treat as one large array
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korDen
parents:
diff changeset
505 while (1)
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korDen
parents:
diff changeset
506 {
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korDen
parents:
diff changeset
507 t = t.nextOf().toBasetype();
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korDen
parents:
diff changeset
508 if (t.ty != TY.Tsarray)
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korDen
parents:
diff changeset
509 break;
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korDen
parents:
diff changeset
510 dim *= (cast(TypeSArray)t).dim.toInteger();
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korDen
parents:
diff changeset
511 e1.type = new TypeSArray(t.nextOf(), new IntegerExp(Loc(0), dim, Type.tindex));
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korDen
parents:
diff changeset
512 }
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korDen
parents:
diff changeset
513 }
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korDen
parents:
diff changeset
514 e1 = new SliceExp(loc, e1, null, null);
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korDen
parents:
diff changeset
515 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
516 else if (t.ty == TY.Tstruct)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
517 {
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korDen
parents:
diff changeset
518 ei.exp = ei.exp.semantic(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
519 version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
520 /* Look to see if initializer is a call to the constructor
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
521 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
522 StructDeclaration sd = (cast(TypeStruct)t).sym;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
523 if (sd.ctor && // there are constructors
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
524 ei.exp.type.ty == TY.Tstruct && // rvalue is the same struct
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
525 (cast(TypeStruct)ei.exp.type).sym == sd &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
526 ei.exp.op == TOK.TOKstar)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
527 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
528 /* Look for form of constructor call which is:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
529 * *__ctmp.ctor(arguments...)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
530 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
531 PtrExp pe = cast(PtrExp)ei.exp;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
532 if (pe.e1.op == TOK.TOKcall)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
533 { CallExp ce = cast(CallExp)pe.e1;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
534 if (ce.e1.op == TOK.TOKdotvar)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
535 { DotVarExp dve = cast(DotVarExp)ce.e1;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
536 if (dve.var.isCtorDeclaration())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
537 { /* It's a constructor call, currently constructing
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
538 * a temporary __ctmp.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
539 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
540 /* Before calling the constructor, initialize
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
541 * variable with a bit copy of the default
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
542 * initializer
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
543 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
544 Expression e = new AssignExp(loc, new VarExp(loc, this), t.defaultInit(loc));
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
545 e.op = TOK.TOKblit;
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korDen
parents:
diff changeset
546 e.type = t;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
547 ei.exp = new CommaExp(loc, e, ei.exp);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
548
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
549 /* Replace __ctmp being constructed with e1
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
550 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
551 dve.e1 = e1;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
552 return;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
553 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
554 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
555 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
556 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
557 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
558 if (!ei.exp.implicitConvTo(type))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
559 { Type ti = ei.exp.type.toBasetype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
560 // Don't cast away invariant or mutability in initializer
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
561 if (!(ti.ty == TY.Tstruct && t.toDsymbol(sc) == ti.toDsymbol(sc)))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
562 ei.exp = new CastExp(loc, ei.exp, type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
563 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
564 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
565 ei.exp = new AssignExp(loc, e1, ei.exp);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
566 ei.exp.op = op;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
567 canassign++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
568 ei.exp = ei.exp.semantic(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
569 canassign--;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
570 ei.exp.optimize(WANT.WANTvalue);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
571 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
572 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
573 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
574 init = init.semantic(sc, type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
575 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
576 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
577 else if (storage_class & (STC.STCconst | STC.STCimmutable | STC.STCmanifest) ||
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
578 type.isConst() || type.isInvariant())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
579 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
580 /* Because we may need the results of a const declaration in a
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
581 * subsequent type, such as an array dimension, before semantic2()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
582 * gets ordinarily run, try to run semantic2() now.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
583 * Ignore failure.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
584 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
585
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
586 if (!global.errors && !inferred)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
587 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
588 uint errors = global.errors;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
589 global.gag++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
590 //printf("+gag\n");
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
591 Expression e;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
592 Initializer i2 = init;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
593 inuse++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
594 if (ei)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
595 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
596 e = ei.exp.syntaxCopy();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
597 e = e.semantic(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
598 e = e.implicitCastTo(sc, type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
599 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
600 else if (si || ai)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
601 { i2 = init.syntaxCopy();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
602 i2 = i2.semantic(sc, type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
603 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
604 inuse--;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
605 global.gag--;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
606 //printf("-gag\n");
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
607 if (errors != global.errors) // if errors happened
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
608 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
609 if (global.gag == 0)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
610 global.errors = errors; // act as if nothing happened
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
611 version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
612 /* Save scope for later use, to try again
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
613 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
614 scope_ = new Scope(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
615 scope_.setNoFree();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
616 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
617 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
618 else if (ei)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
619 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
620 if (isDataseg())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
621 /* static const/invariant does CTFE
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
622 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
623 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
624 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
625 e = e.optimize(WANT.WANTvalue);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
626 if (e.op == TOK.TOKint64 || e.op == TOK.TOKstring || e.op == TOK.TOKfloat64)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
627 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
628 ei.exp = e; // no errors, keep result
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
629 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
630 ///version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
631 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
632 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
633 /* Save scope for later use, to try again
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
634 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
635 scope_ = new Scope(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
636 scope_.setNoFree();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
637 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
638 ///}
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
639 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
640 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
641 init = i2; // no errors, keep result
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
642 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
643 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
644 sc = sc.pop();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
645 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
646 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
647
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
648 void semantic2(Scope sc)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
649 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
650 //printf("VarDeclaration.semantic2('%s')\n", toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
651 if (init && !toParent().isFuncDeclaration())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
652 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
653 inuse++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
654 static if (false) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
655 ExpInitializer ei = init.isExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
656 if (ei)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
657 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
658 ei.exp.dump(0);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
659 printf("type = %p\n", ei.exp.type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
660 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
661 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
662 init = init.semantic(sc, type);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
663 inuse--;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
664 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
665 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
666
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
667 string kind()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
668 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
669 return "variable";
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
670 }
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korDen
parents:
diff changeset
671
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korDen
parents:
diff changeset
672 void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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korDen
parents:
diff changeset
673 {
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korDen
parents:
diff changeset
674 assert(false);
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korDen
parents:
diff changeset
675 }
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korDen
parents:
diff changeset
676
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korDen
parents:
diff changeset
677 version (_DH) {
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korDen
parents:
diff changeset
678 Type htype;
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korDen
parents:
diff changeset
679 Initializer hinit;
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korDen
parents:
diff changeset
680 }
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korDen
parents:
diff changeset
681 bool needThis()
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korDen
parents:
diff changeset
682 {
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korDen
parents:
diff changeset
683 //printf("VarDeclaration.needThis(%s, x%x)\n", toChars(), storage_class);
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korDen
parents:
diff changeset
684 return (storage_class & STC.STCfield) != 0;
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korDen
parents:
diff changeset
685 }
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korDen
parents:
diff changeset
686
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korDen
parents:
diff changeset
687 bool isImportedSymbol()
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korDen
parents:
diff changeset
688 {
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korDen
parents:
diff changeset
689 if (protection == PROT.PROTexport && !init && (storage_class & STC.STCstatic || parent.isModule()))
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korDen
parents:
diff changeset
690 return true;
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korDen
parents:
diff changeset
691
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korDen
parents:
diff changeset
692 return false;
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korDen
parents:
diff changeset
693 }
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korDen
parents:
diff changeset
694
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korDen
parents:
diff changeset
695 bool isDataseg()
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korDen
parents:
diff changeset
696 {
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korDen
parents:
diff changeset
697 static if (false) {
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korDen
parents:
diff changeset
698 printf("VarDeclaration.isDataseg(%p, '%s')\n", this, toChars());
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korDen
parents:
diff changeset
699 printf("%x, %p, %p\n", storage_class & (STC.STCstatic | STC.STCconst), parent.isModule(), parent.isTemplateInstance());
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korDen
parents:
diff changeset
700 printf("parent = '%s'\n", parent.toChars());
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korDen
parents:
diff changeset
701 }
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korDen
parents:
diff changeset
702 if (storage_class & STC.STCmanifest)
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korDen
parents:
diff changeset
703 return false;
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korDen
parents:
diff changeset
704
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korDen
parents:
diff changeset
705 Dsymbol parent = this.toParent();
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korDen
parents:
diff changeset
706 if (!parent && !(storage_class & STC.STCstatic))
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korDen
parents:
diff changeset
707 {
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korDen
parents:
diff changeset
708 error("forward referenced");
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korDen
parents:
diff changeset
709 type = Type.terror;
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korDen
parents:
diff changeset
710 return false;
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korDen
parents:
diff changeset
711 }
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korDen
parents:
diff changeset
712
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korDen
parents:
diff changeset
713 return canTakeAddressOf() && (storage_class & (STC.STCstatic | STC.STCextern | STC.STCtls | STC.STCgshared) || toParent().isModule() || toParent().isTemplateInstance());
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korDen
parents:
diff changeset
714 }
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korDen
parents:
diff changeset
715
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korDen
parents:
diff changeset
716 bool isThreadlocal()
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korDen
parents:
diff changeset
717 {
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korDen
parents:
diff changeset
718 //printf("VarDeclaration.isThreadlocal(%p, '%s')\n", this, toChars());
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korDen
parents:
diff changeset
719 static if (false) { /// || TARGET_OSX
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korDen
parents:
diff changeset
720 /* To be thread-local, must use the __thread storage class.
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korDen
parents:
diff changeset
721 * BUG: OSX doesn't support thread local yet.
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korDen
parents:
diff changeset
722 */
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korDen
parents:
diff changeset
723 return isDataseg() && (storage_class & (STC.STCtls | STC.STCconst | STC.STCimmutable | STC.STCshared | STC.STCgshared)) == STC.STCtls;
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korDen
parents:
diff changeset
724 } else {
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korDen
parents:
diff changeset
725 /* Data defaults to being thread-local. It is not thread-local
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korDen
parents:
diff changeset
726 * if it is immutable, const or shared.
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korDen
parents:
diff changeset
727 */
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korDen
parents:
diff changeset
728 bool i = isDataseg() && !(storage_class & (STC.STCimmutable | STC.STCconst | STC.STCshared | STC.STCgshared));
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korDen
parents:
diff changeset
729 //printf("\treturn %d\n", i);
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korDen
parents:
diff changeset
730 return i;
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korDen
parents:
diff changeset
731 }
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korDen
parents:
diff changeset
732 }
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korDen
parents:
diff changeset
733
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korDen
parents:
diff changeset
734 bool hasPointers()
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korDen
parents:
diff changeset
735 {
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korDen
parents:
diff changeset
736 //printf("VarDeclaration.hasPointers() %s, ty = %d\n", toChars(), type.ty);
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korDen
parents:
diff changeset
737 return (!isDataseg() && type.hasPointers());
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korDen
parents:
diff changeset
738 }
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korDen
parents:
diff changeset
739
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korDen
parents:
diff changeset
740 version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
741 bool canTakeAddressOf()
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korDen
parents:
diff changeset
742 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
743 static if (false) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
744 /* Global variables and struct/class fields of the form:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
745 * const int x = 3;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
746 * are not stored and hence cannot have their address taken.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
747 */
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korDen
parents:
diff changeset
748 if ((isConst() || isInvariant()) && (storage_class & STC.STCinit) && (!(storage_class & (STC.STCstatic | STC.STCextern)) || (storage_class & STC.STCfield)) &&
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
749 (!parent || toParent().isModule() || toParent().isTemplateInstance()) && type.toBasetype().isTypeBasic())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
750 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
751 return false;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
752 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
753 } else {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
754 if (storage_class & STC.STCmanifest)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
755 return false;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
756 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
757 return true;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
758 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
759
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
760 int needsAutoDtor()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
761 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
762 assert(false);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
763 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
764 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
765
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
766 /******************************************
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
767 * If a variable has an auto destructor call, return call for it.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
768 * Otherwise, return null.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
769 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
770 Expression callAutoDtor(Scope sc)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
771 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
772 Expression e = null;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
773
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
774 //printf("VarDeclaration.callAutoDtor() %s\n", toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
775
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
776 if (noauto || storage_class & STC.STCnodtor)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
777 return null;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
778
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
779 // Destructors for structs and arrays of structs
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
780 bool array = false;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
781 Type tv = type.toBasetype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
782 while (tv.ty == TY.Tsarray)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
783 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
784 TypeSArray ta = cast(TypeSArray)tv;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
785 array = true;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
786 tv = tv.nextOf().toBasetype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
787 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
788 if (tv.ty == TY.Tstruct)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
789 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
790 TypeStruct ts = cast(TypeStruct)tv;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
791 StructDeclaration sd = ts.sym;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
792 if (sd.dtor)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
793 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
794 if (array)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
795 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
796 // Typeinfo.destroy(cast(void*)&v);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
797 Expression ea = new SymOffExp(loc, this, 0, 0);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
798 ea = new CastExp(loc, ea, Type.tvoid.pointerTo());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
799 Expressions args = new Expressions();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
800 args.push(cast(void*)ea);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
801
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
802 Expression et = type.getTypeInfo(sc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
803 et = new DotIdExp(loc, et, Id.destroy);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
804
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
805 e = new CallExp(loc, et, args);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
806 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
807 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
808 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
809 e = new VarExp(loc, this);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
810 e = new DotVarExp(loc, e, sd.dtor, 0);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
811 e = new CallExp(loc, e);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
812 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
813 return e;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
814 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
815 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
816
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
817 // Destructors for classes
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
818 if (storage_class & (STC.STCauto | STC.STCscope))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
819 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
820 for (ClassDeclaration cd = type.isClassHandle(); cd; cd = cd.baseClass)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
821 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
822 /* We can do better if there's a way with onstack
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
823 * classes to determine if there's no way the monitor
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
824 * could be set.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
825 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
826 //if (cd.isInterfaceDeclaration())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
827 //error("interface %s cannot be scope", cd.toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
828 if (1 || onstack || cd.dtors.dim) // if any destructors
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
829 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
830 // delete this;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
831 Expression ec = new VarExp(loc, this);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
832 e = new DeleteExp(loc, ec);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
833 e.type = Type.tvoid;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
834 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
835 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
836 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
837 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
838 return e;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
839 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
840
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
841 /****************************
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
842 * Get ExpInitializer for a variable, if there is one.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
843 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
844 ExpInitializer getExpInitializer()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
845 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
846 ExpInitializer ei;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
847
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
848 if (init)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
849 ei = init.isExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
850 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
851 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
852 Expression e = type.defaultInit(loc);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
853 if (e)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
854 ei = new ExpInitializer(loc, e);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
855 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
856 ei = null;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
857 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
858 return ei;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
859 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
860
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
861 /*******************************************
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
862 * If variable has a constant expression initializer, get it.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
863 * Otherwise, return null.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
864 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
865 Expression getConstInitializer()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
866 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
867 if ((isConst() || isInvariant() || storage_class & STC.STCmanifest) && storage_class & STC.STCinit)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
868 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
869 ExpInitializer ei = getExpInitializer();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
870 if (ei)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
871 return ei.exp;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
872 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
873
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
874 return null;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
875 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
876
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
877 void checkCtorConstInit()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
878 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
879 static if (false) { /* doesn't work if more than one static ctor */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
880 if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
881 error("missing initializer in static constructor for const variable");
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
882 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
883 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
884
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
885 /************************************
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
886 * Check to see if this variable is actually in an enclosing function
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
887 * rather than the current one.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
888 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
889 void checkNestedReference(Scope sc, Loc loc)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
890 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
891 if (parent && !isDataseg() && parent != sc.parent && !(storage_class & STC.STCmanifest))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
892 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
893 // The function that this variable is in
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
894 FuncDeclaration fdv = toParent().isFuncDeclaration();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
895 // The current function
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
896 FuncDeclaration fdthis = sc.parent.isFuncDeclaration();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
897
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
898 if (fdv && fdthis && fdv !is fdthis)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
899 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
900 if (loc.filename)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
901 fdthis.getLevel(loc, fdv);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
902
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
903 for (int i = 0; i < nestedrefs.dim; i++)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
904 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
905 FuncDeclaration f = cast(FuncDeclaration)nestedrefs.data[i];
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
906 if (f == fdthis)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
907 goto L1;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
908 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
909 nestedrefs.push(cast(void*)fdthis);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
910 L1: ;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
911
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
912 for (int i = 0; i < fdv.closureVars.dim; i++)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
913 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
914 Dsymbol s = cast(Dsymbol)fdv.closureVars.data[i];
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
915 if (s == this)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
916 goto L2;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
917 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
918
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
919 fdv.closureVars.push(cast(void*)this);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
920 L2: ;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
921
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
922 //printf("fdthis is %s\n", fdthis.toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
923 //printf("var %s in function %s is nested ref\n", toChars(), fdv.toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
924 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
925 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
926 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
927
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
928 Dsymbol toAlias()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
929 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
930 //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
931 assert(this !is aliassym);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
932 return aliassym ? aliassym.toAlias() : this;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
933 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
934
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
935 Symbol* toSymbol()
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
936 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
937 //printf("VarDeclaration.toSymbol(%s)\n", toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
938 //if (needThis()) *(char*)0=0;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
939 assert(!needThis());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
940 if (!csym)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
941 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
942 Symbol* s;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
943 TYPE* t;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
944 string id;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
945
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
946 if (isDataseg())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
947 id = mangle();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
948 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
949 id = ident.toChars();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
950
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
951 s = symbol_calloc(toStringz(id));
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
952
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
953 if (storage_class & (STC.STCout | STC.STCref))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
954 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
955 if (global.params.symdebug && storage_class & STC.STCparameter)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
956 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
957 t = type_alloc(TYM.TYnptr); // should be TYref, but problems in back end
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
958 t.Tnext = type.toCtype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
959 t.Tnext.Tcount++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
960 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
961 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
962 t = type_fake(TYM.TYnptr);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
963 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
964 else if (storage_class & STC.STClazy)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
965 t = type_fake(TYM.TYdelegate); // Tdelegate as C type
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
966 else if (isParameter())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
967 t = type.toCParamtype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
968 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
969 t = type.toCtype();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
970
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
971 t.Tcount++;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
972
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
973 if (isDataseg())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
974 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
975 if (isThreadlocal())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
976 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
977 /* Thread local storage
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
978 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
979 TYPE* ts = t;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
980 ts.Tcount++; // make sure a different t is allocated
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
981 type_setty(&t, t.Tty | mTY.mTYthread);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
982 ts.Tcount--;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
983
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
984 if (global.params.vtls)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
985 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
986 string p = loc.toChars();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
987 writef("%s: %s is thread local\n", p ? p : "", toChars());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
988 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
989 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
990
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
991 s.Sclass = SC.SCextern;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
992 s.Sfl = FL.FLextern;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
993 slist_add(s);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
994 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
995 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
996 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
997 s.Sclass = SC.SCauto;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
998 s.Sfl = FL.FLauto;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
999
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1000 if (nestedrefs.dim)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1001 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1002 /* Symbol is accessed by a nested function. Make sure
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1003 * it is not put in a register, and that the optimizer
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1004 * assumes it is modified across function calls and pointer
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1005 * dereferences.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1006 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1007 //printf("\tnested ref, not register\n");
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1008 type_setcv(&t, t.Tty | mTY.mTYvolatile);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1009 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1010 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1011
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1012 mangle_t m = 0;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1013 switch (linkage)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1014 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1015 case LINK.LINKwindows:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1016 m = mTYman.mTYman_std;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1017 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1018
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1019 case LINK.LINKpascal:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1020 m = mTYman.mTYman_pas;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1021 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1022
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1023 case LINK.LINKc:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1024 m = mTYman.mTYman_c;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1025 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1026
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1027 case LINK.LINKd:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1028 m = mTYman.mTYman_d;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1029 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1030
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1031 case LINK.LINKcpp:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1032 m = mTYman.mTYman_cpp;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1033 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1034
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1035 default:
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1036 writef("linkage = %d\n", linkage);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1037 assert(0);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1038 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1039 type_setmangle(&t, m);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1040 s.Stype = t;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1041
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1042 csym = s;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1043 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1044 return csym;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1045 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1046
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1047 void toObjFile(int multiobj) // compile to .obj file
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1048 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1049 Symbol* s;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1050 uint sz;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1051 Dsymbol parent;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1052
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1053 //printf("VarDeclaration.toObjFile(%p '%s' type=%s) protection %d\n", this, toChars(), type.toChars(), protection);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1054 //printf("\talign = %d\n", type.alignsize());
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1055
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1056 if (aliassym)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1057 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1058 toAlias().toObjFile(0);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1059 return;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1060 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1061
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1062 version (DMDV2) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1063 // Do not store variables we cannot take the address of
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1064 if (!canTakeAddressOf())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1065 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1066 return;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1067 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1068 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1069
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1070 if (isDataseg() && !(storage_class & STC.STCextern))
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1071 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1072 s = toSymbol();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1073 sz = cast(uint)type.size();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1074
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1075 parent = this.toParent();
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1076 /// version (DMDV1) { /* private statics should still get a global symbol, in case
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1077 /// * another module inlines a function that references it.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1078 /// */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1079 /// if (/*protection == PROT.PROTprivate ||*/
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1080 /// !parent || parent.ident == null || parent.isFuncDeclaration())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1081 /// {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1082 /// s.Sclass = SC.SCstatic;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1083 /// }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1084 /// else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1085 /// }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1086 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1087 if (storage_class & STC.STCcomdat)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1088 s.Sclass = SC.SCcomdat;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1089 else
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1090 s.Sclass = SC.SCglobal;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1091
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1092 do
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1093 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1094 /* Global template data members need to be in comdat's
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1095 * in case multiple .obj files instantiate the same
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1096 * template with the same types.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1097 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1098 if (parent.isTemplateInstance() && !parent.isTemplateMixin())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1099 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1100 version (DMDV1) {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1101 /* These symbol constants have already been copied,
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1102 * so no reason to output them.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1103 * Note that currently there is no way to take
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1104 * the address of such a const.
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1105 */
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1106 if (isConst() && type.toBasetype().ty != TY.Tsarray && init && init.isExpInitializer())
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1107 return;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1108 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1109 s.Sclass = SC.SCcomdat;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1110 break;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1111 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1112 parent = parent.parent;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1113 } while (parent);
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1114 }
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1115
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1116 s.Sfl = FL.FLdata;
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1117
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1118 if (init)
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1119 {
10317f0c89a5 Initial commit
korDen
parents:
diff changeset
1120 s.Sdt = init.toDt();
10317f0c89a5 Initial commit
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1121
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1122 // Look for static array that is block initialized
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1123 Type tb;
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1124 ExpInitializer ie = init.isExpInitializer();
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1125
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1126 tb = type.toBasetype();
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1127 if (tb.ty == TY.Tsarray && ie
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1128 && !tb.nextOf().equals(ie.exp.type.toBasetype().nextOf())
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1129 && ie.exp.implicitConvTo(tb.nextOf()))
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1130 {
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1131 int dim = cast(int)(cast(TypeSArray)tb).dim.toInteger();
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1132
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1133 // Duplicate Sdt 'dim-1' times, as we already have the first one
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1134 while (--dim > 0)
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1135 {
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1136 ie.exp.toDt(&s.Sdt);
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1137 }
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1138 }
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korDen
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1139 }
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korDen
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1140 else if (storage_class & STC.STCextern)
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1141 {
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1142 s.Sclass = SC.SCextern;
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1143 s.Sfl = FL.FLextern;
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1144 s.Sdt = null;
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korDen
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1145 // BUG: if isExport(), shouldn't we make it dllimport?
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1146 return;
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1147 }
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1148 else
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1149 {
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1150 type.toDt(&s.Sdt);
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1151 }
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korDen
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1152 dt_optimize(s.Sdt);
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korDen
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1153
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korDen
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1154 // See if we can convert a comdat to a comdef,
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korDen
parents:
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1155 // which saves on exe file space.
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korDen
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1156 if (s.Sclass == SC.SCcomdat &&
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1157 s.Sdt &&
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1158 s.Sdt.dt == DT.DT_azeros &&
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1159 s.Sdt.DTnext is null &&
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1160 !isThreadlocal())
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1161 {
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1162 s.Sclass = SC.SCglobal;
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1163 s.Sdt.dt = DT.DT_common;
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1164 }
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korDen
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1165
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1166 version (ELFOBJ_OR_MACHOBJ) { // Burton
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1167 if (s.Sdt && s.Sdt.dt == DT.DT_azeros && s.Sdt.DTnext is null)
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1168 s.Sseg = Segment.UDATA;
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1169 else
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1170 s.Sseg = Segment.DATA;
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korDen
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1171 }
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korDen
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1172 if (sz)
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1173 {
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1174 outdata(s);
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parents:
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1175 if (isExport())
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1176 obj_export(s, 0);
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parents:
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1177 }
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1178 }
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korDen
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1179 }
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1180
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1181 int cvMember(ubyte* p)
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1182 {
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1183 assert(false);
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1184 }
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1185
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korDen
parents:
diff changeset
1186 // Eliminate need for dynamic_cast
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parents:
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1187 VarDeclaration isVarDeclaration() { return this; }
16
5c9b78899f5d Implemented methods for Tuples, fixed some linking issues.
Robert Clipsham <robert@octarineparrot.com>
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diff changeset
1188 }