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annotate dmd/DsymbolExp.d @ 73:ef02e2e203c2

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Updating to dmd2.033
author korDen
date Sat, 28 Aug 2010 19:42:41 +0400
parents 2e2a5c3f943a
children 43073c7c7769
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1 module dmd.DsymbolExp;
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2
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3 import dmd.Expression;
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4 import dmd.OutBuffer;
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5 import dmd.EnumMember;
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6 import dmd.VarDeclaration;
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7 import dmd.FuncDeclaration;
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8 import dmd.FuncLiteralDeclaration;
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9 import dmd.OverloadSet;
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10 import dmd.Declaration;
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11 import dmd.ClassDeclaration;
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12 import dmd.Import;
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13 import dmd.Package;
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14 import dmd.Type;
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15 import dmd.DotVarExp;
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16 import dmd.ThisExp;
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17 import dmd.VarExp;
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18 import dmd.FuncExp;
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19 import dmd.OverExp;
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20 import dmd.DotTypeExp;
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21 import dmd.ScopeExp;
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22 import dmd.Module;
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23 import dmd.TypeExp;
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24 import dmd.TupleDeclaration;
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25 import dmd.TupleExp;
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26 import dmd.TemplateInstance;
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27 import dmd.Global;
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28 import dmd.TemplateDeclaration;
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29 import dmd.TemplateExp;
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30 import dmd.Loc;
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31 import dmd.Scope;
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32 import dmd.HdrGenState;
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33 import dmd.Dsymbol;
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34 import dmd.TOK;
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35
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36 class DsymbolExp : Expression
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37 {
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38 Dsymbol s;
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39 bool hasOverloads;
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40
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41 this(Loc loc, Dsymbol s, bool hasOverloads = false)
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42 {
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43 super(loc, TOK.TOKdsymbol, DsymbolExp.sizeof);
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44 this.s = s;
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45 this.hasOverloads = hasOverloads;
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46 }
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47
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48 override Expression semantic(Scope sc)
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49 {
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50 version (LOGSEMANTIC) {
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51 printf("DsymbolExp.semantic('%s')\n", s.toChars());
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52 }
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53
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54 Lagain:
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55 EnumMember em;
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56 Expression e;
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57 VarDeclaration v;
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58 FuncDeclaration f;
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59 FuncLiteralDeclaration fld;
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60 OverloadSet o;
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61 Declaration d;
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62 ClassDeclaration cd;
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63 ClassDeclaration thiscd = null;
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64 Import imp;
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65 Package pkg;
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66 Type t;
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67
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68 //printf("DsymbolExp. %p '%s' is a symbol\n", this, toChars());
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69 //printf("s = '%s', s.kind = '%s'\n", s.toChars(), s.kind());
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70 if (type)
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71 return this;
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72
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73 if (!s.isFuncDeclaration()) // functions are checked after overloading
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74 checkDeprecated(sc, s);
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75
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76 s = s.toAlias();
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77 //printf("s = '%s', s.kind = '%s', s.needThis() = %p\n", s.toChars(), s.kind(), s.needThis());
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78 if (!s.isFuncDeclaration())
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79 checkDeprecated(sc, s);
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80
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81 if (sc.func)
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82 thiscd = sc.func.parent.isClassDeclaration();
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83
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84 // BUG: This should happen after overload resolution for functions, not before
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85 if (s.needThis())
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86 {
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87 version (DMDV2) {
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88 bool cond = !s.isFuncDeclaration();
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89 } else {
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90 bool cond = true;
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91 }
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92 if (hasThis(sc) && cond)
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93 {
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94 // Supply an implicit 'this', as in
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95 // this.ident
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96 DotVarExp de = new DotVarExp(loc, new ThisExp(loc), s.isDeclaration());
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97 return de.semantic(sc);
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98 }
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99 }
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100
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101 em = s.isEnumMember();
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102 if (em)
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103 {
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104 e = em.value;
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105 e = e.semantic(sc);
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106 return e;
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107 }
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108 v = s.isVarDeclaration();
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109 if (v)
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110 {
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111 //printf("Identifier '%s' is a variable, type '%s'\n", toChars(), v.type.toChars());
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112 if (!type)
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113 {
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114 type = v.type;
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115 if (!v.type)
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116 {
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117 error("forward reference of %s %s", v.kind(), v.toChars());
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118 type = Type.terror;
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119 }
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120 }
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121
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122 e = new VarExp(loc, v);
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123 e.type = type;
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124 e = e.semantic(sc);
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125 return e.deref();
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126 }
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127
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128 fld = s.isFuncLiteralDeclaration();
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129 if (fld)
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130 {
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131 //printf("'%s' is a function literal\n", fld.toChars());
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132 e = new FuncExp(loc, fld);
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133 return e.semantic(sc);
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134 }
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135 f = s.isFuncDeclaration();
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136 if (f)
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137 {
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138 //printf("'%s' is a function\n", f.toChars());
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139
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140 if (!f.type.deco)
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141 {
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142 error("forward reference to %s", toChars());
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143 }
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144 return new VarExp(loc, f, hasOverloads);
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145 }
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146 o = s.isOverloadSet();
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147 if (o)
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148 {
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149 //printf("'%s' is an overload set\n", o.toChars());
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150 return new OverExp(o);
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151 }
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152 cd = s.isClassDeclaration();
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153 if (cd && thiscd && cd.isBaseOf(thiscd, null) && sc.func.needThis())
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154 {
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155 // We need to add an implicit 'this' if cd is this class or a base class.
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156 DotTypeExp dte = new DotTypeExp(loc, new ThisExp(loc), s);
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157 return dte.semantic(sc);
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158 }
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159 imp = s.isImport();
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160 if (imp)
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161 {
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162 if (!imp.pkg)
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163 {
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164 error("forward reference of import %s", imp.toChars());
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165 return this;
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166 }
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167 ScopeExp ie = new ScopeExp(loc, imp.pkg);
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168 return ie.semantic(sc);
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169 }
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170 pkg = s.isPackage();
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171 if (pkg)
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172 {
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173 ScopeExp ie = new ScopeExp(loc, pkg);
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174 return ie.semantic(sc);
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175 }
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176 Module mod = s.isModule();
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177 if (mod)
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178 {
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179 ScopeExp ie = new ScopeExp(loc, mod);
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180 return ie.semantic(sc);
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181 }
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182
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183 t = s.getType();
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184 if (t)
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185 {
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186 return new TypeExp(loc, t);
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187 }
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188
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189 TupleDeclaration tup = s.isTupleDeclaration();
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190 if (tup)
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191 {
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192 e = new TupleExp(loc, tup);
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193 e = e.semantic(sc);
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194 return e;
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195 }
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196
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197 TemplateInstance ti = s.isTemplateInstance();
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198 if (ti && !global.errors)
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199 {
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200 if (!ti.semanticRun)
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201 ti.semantic(sc);
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202
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203 s = ti.inst.toAlias();
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204 if (!s.isTemplateInstance())
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205 goto Lagain;
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206
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207 e = new ScopeExp(loc, ti);
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208 e = e.semantic(sc);
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209 return e;
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210 }
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211
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212 TemplateDeclaration td = s.isTemplateDeclaration();
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213 if (td)
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214 {
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215 e = new TemplateExp(loc, td);
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216 e = e.semantic(sc);
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217 return e;
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218 }
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219
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220 Lerr:
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221 error("%s '%s' is not a variable", s.kind(), s.toChars());
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222 type = Type.terror;
0
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223 return this;
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224 }
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225
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226 override string toChars()
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227 {
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228 assert(false);
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229 }
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230
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231 override void dump(int indent)
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232 {
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233 assert(false);
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234 }
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235
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236 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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237 {
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238 assert(false);
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239 }
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240
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241 override int isLvalue()
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242 {
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243 assert(false);
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244 }
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245
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246 override Expression toLvalue(Scope sc, Expression e)
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247 {
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248 assert(false);
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249 }
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250 }
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251