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1 module dmd.TypeQualified;
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2
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3 import dmd.Type;
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4 import dmd.Import;
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5 import dmd.TypeExp;
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6 import dmd.DotIdExp;
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7 import dmd.VarDeclaration;
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8 import dmd.EnumMember;
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9 import dmd.TupleDeclaration;
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10 import dmd.Id;
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11 import dmd.VarExp;
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12 import dmd.TemplateInstance;
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13 import dmd.Loc;
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14 import dmd.Array;
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15 import dmd.TY;
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16 import dmd.Identifier;
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17 import dmd.OutBuffer;
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18 import dmd.HdrGenState;
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19 import dmd.Scope;
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20 import dmd.Dsymbol;
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21 import dmd.DYNCAST;
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22 import dmd.Expression;
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23 import dmd.Util;
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24
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25 class TypeQualified : Type
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26 {
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27 Loc loc;
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28 Array idents; // array of Identifier's representing ident.ident.ident etc.
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29
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30 this(TY ty, Loc loc)
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31 {
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32 super(ty);
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33 this.loc = loc;
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34
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35 idents = new Array();
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36 }
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37
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38 version (DumbClone) {
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39 } else {
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40 Type clone()
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41 {
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42 assert(false);
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43 }
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44 }
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45 void syntaxCopyHelper(TypeQualified t)
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46 {
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47 //printf("TypeQualified::syntaxCopyHelper(%s) %s\n", t->toChars(), toChars());
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48 idents.setDim(t.idents.dim);
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49 for (int i = 0; i < idents.dim; i++)
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50 {
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52
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51 Object o = cast(Object)t.idents.data[i];
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52 if (TemplateInstance ti = cast(TemplateInstance)o)
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0
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53 {
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52
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54 o = ti.syntaxCopy(null);
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0
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55 }
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56
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52
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57 idents.data[i] = cast(void*)o;
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0
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58 }
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59 }
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60
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52
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61 void addIdent(Object ident)
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0
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62 {
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56
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63 assert(ident !is null);
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0
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64 idents.push(cast(void*)ident);
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65 }
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66
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67 void toCBuffer2Helper(OutBuffer buf, HdrGenState* hgs)
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68 {
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69 int i;
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70
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71 for (i = 0; i < idents.dim; i++)
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72 {
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73 Identifier id = cast(Identifier)idents.data[i];
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74 buf.writeByte('.');
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75
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76 if (id.dyncast() == DYNCAST.DYNCAST_DSYMBOL)
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77 {
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78 TemplateInstance ti = cast(TemplateInstance)id;
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79 ti.toCBuffer(buf, hgs);
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80 } else {
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81 buf.writestring(id.toChars());
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82 }
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83 }
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84 }
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85
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86 ulong size(Loc loc)
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87 {
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88 assert(false);
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89 }
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90
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91 /*************************************
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92 * Takes an array of Identifiers and figures out if
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93 * it represents a Type or an Expression.
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94 * Output:
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95 * if expression, *pe is set
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96 * if type, *pt is set
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97 */
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98 void resolveHelper(Loc loc, Scope sc, Dsymbol s, Dsymbol scopesym, Expression* pe, Type* pt, Dsymbol* ps)
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99 {
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100 VarDeclaration v;
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101 EnumMember em;
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102 TupleDeclaration td;
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103 Expression e;
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104
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105 static if (false) {
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106 printf("TypeQualified.resolveHelper(sc = %p, idents = '%s')\n", sc, toChars());
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107 if (scopesym)
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108 printf("\tscopesym = '%s'\n", scopesym.toChars());
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109 }
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110 *pe = null;
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111 *pt = null;
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112 *ps = null;
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113 if (s)
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114 {
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115 //printf("\t1: s = '%s' %p, kind = '%s'\n",s.toChars(), s, s.kind());
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116 s.checkDeprecated(loc, sc); // check for deprecated aliases
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117 s = s.toAlias();
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118 //printf("\t2: s = '%s' %p, kind = '%s'\n",s.toChars(), s, s.kind());
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119 for (int i = 0; i < idents.dim; i++)
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120 {
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56
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121 Object o = cast(Object)idents.data[i];
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122
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123 Dsymbol sm = s.searchX(loc, sc, o);
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124 Identifier id = cast(Identifier)o;
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0
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125 //printf("\t3: s = '%s' %p, kind = '%s'\n",s.toChars(), s, s.kind());
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126 //printf("\tgetType = '%s'\n", s.getType().toChars());
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127 if (!sm)
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128 {
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129 Type t;
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130
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131 v = s.isVarDeclaration();
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132 if (v && id == Id.length)
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133 {
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134 e = v.getConstInitializer();
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135 if (!e)
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136 e = new VarExp(loc, v);
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137 t = e.type;
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138 if (!t)
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139 goto Lerror;
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140 goto L3;
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141 }
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142 t = s.getType();
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143 if (!t && s.isDeclaration())
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144 t = s.isDeclaration().type;
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145 if (t)
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146 {
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147 sm = t.toDsymbol(sc);
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148 if (sm)
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149 { sm = sm.search(loc, id, 0);
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150 if (sm)
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151 goto L2;
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152 }
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153 //e = t.getProperty(loc, id);
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154 e = new TypeExp(loc, t);
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155 e = t.dotExp(sc, e, id);
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156 i++;
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157 L3:
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158 for (; i < idents.dim; i++)
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159 {
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160 id = cast(Identifier)idents.data[i];
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161 //printf("e: '%s', id: '%s', type = %p\n", e.toChars(), id.toChars(), e.type);
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162 if (id == Id.offsetof)
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163 { e = new DotIdExp(e.loc, e, id);
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164 e = e.semantic(sc);
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165 }
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166 else
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167 e = e.type.dotExp(sc, e, id);
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168 }
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169 *pe = e;
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170 }
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171 else
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172 Lerror:
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173 error(loc, "identifier '%s' of '%s' is not defined", id.toChars(), toChars());
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174 return;
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175 }
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176 L2:
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177 s = sm.toAlias();
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178 }
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179
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180 v = s.isVarDeclaration();
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181 if (v)
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182 {
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183 ///static if (false) {
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184 /// // It's not a type, it's an expression
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185 /// Expression *e = v.getConstInitializer();
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186 /// if (e)
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187 /// {
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188 /// *pe = e.copy(); // make copy so we can change loc
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189 /// (*pe).loc = loc;
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190 /// }
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191 /// else
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192 ///}
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193 {
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194 ///static if (false) {
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195 /// WithScopeSymbol withsym;
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196 /// if (scopesym && (withsym = scopesym.isWithScopeSymbol()) !is null)
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197 /// {
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198 /// // Same as wthis.ident
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199 /// e = new VarExp(loc, withsym.withstate.wthis);
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200 /// e = new DotIdExp(loc, e, ident);
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201 /// //assert(0); // BUG: should handle this
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202 /// }
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203 /// else
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204 ///}
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205 *pe = new VarExp(loc, v);
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206 }
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207 return;
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208 }
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209 em = s.isEnumMember();
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210 if (em)
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211 {
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212 // It's not a type, it's an expression
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213 *pe = em.value.copy();
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214 return;
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215 }
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216
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217 L1:
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218 Type t = s.getType();
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219 if (!t)
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220 {
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221 // If the symbol is an import, try looking inside the import
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222 Import si;
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223
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224 si = s.isImport();
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225 if (si)
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226 {
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227 s = si.search(loc, s.ident, 0);
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228 if (s && s != si)
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229 goto L1;
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230 s = si;
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231 }
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232 *ps = s;
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233 return;
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234 }
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235 if (t.ty == TY.Tinstance && t != this && !t.deco)
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236 {
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237 error(loc, "forward reference to '%s'", t.toChars());
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238 return;
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239 }
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240
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241 if (t != this)
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242 {
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243 if (t.reliesOnTident())
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244 {
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245 Scope scx;
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246
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247 for (scx = sc; 1; scx = scx.enclosing)
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248 {
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249 if (!scx)
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250 {
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251 error(loc, "forward reference to '%s'", t.toChars());
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252 return;
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253 }
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254 if (scx.scopesym == scopesym)
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255 break;
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256 }
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257 t = t.semantic(loc, scx);
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258 //((TypeIdentifier *)t).resolve(loc, scx, pe, &t, ps);
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259 }
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260 }
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261 if (t.ty == TY.Ttuple)
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262 *pt = t;
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263 else
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264 *pt = t.merge();
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265 }
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266 if (!s)
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267 {
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268 error(loc, "identifier '%s' is not defined", toChars());
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269 }
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270 }
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271 } |
