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annotate dmd/DotIdExp.d @ 192:eb38fdcb3e62 default tip

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updated to compile with dmd2.062
author korDen
date Sat, 02 Mar 2013 01:25:52 -0800
parents b0d41ff5e0df
children
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1 module dmd.DotIdExp;
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2
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3 import dmd.common;
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4 import dmd.Expression;
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5 import dmd.Identifier;
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6 import dmd.IntegerExp;
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7 import dmd.Type;
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8 import dmd.TY;
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9 import dmd.ScopeExp;
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10 import dmd.StringExp;
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11 import dmd.PtrExp;
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12 import dmd.TypePointer;
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13 import dmd.Dsymbol;
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14 import dmd.EnumMember;
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15 import dmd.VarDeclaration;
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16 import dmd.ThisExp;
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17 import dmd.DotVarExp;
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18 import dmd.VarExp;
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19 import dmd.CommaExp;
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20 import dmd.FuncDeclaration;
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21 import dmd.OverloadSet;
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22 import dmd.OverExp;
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23 import dmd.TypeExp;
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24 import dmd.TupleDeclaration;
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25 import dmd.ScopeDsymbol;
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26 import dmd.Import;
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27 import dmd.Id;
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28 import dmd.TupleExp;
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29 import dmd.ArrayTypes;
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30 import dmd.UnaExp;
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31 import dmd.OutBuffer;
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32 import dmd.Loc;
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33 import dmd.Scope;
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34 import dmd.TOK;
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35 import dmd.HdrGenState;
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36 import dmd.ClassDeclaration;
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37 import dmd.StructDeclaration;
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38 import dmd.AggregateDeclaration;
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39 import dmd.DotExp;
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40 import dmd.Global;
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41 import dmd.IdentifierExp;
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42 import dmd.CallExp;
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43 import dmd.PREC;
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44
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45 import dmd.expression.Util;
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46
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47 import dmd.DDMDExtensions;
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48
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49 class DotIdExp : UnaExp
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50 {
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51 mixin insertMemberExtension!(typeof(this));
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52
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53 Identifier ident;
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54
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55 this(Loc loc, Expression e, Identifier ident)
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56 {
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57 register();
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58 super(loc, TOK.TOKdot, DotIdExp.sizeof, e);
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59 this.ident = ident;
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60 }
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61
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62 override Expression semantic(Scope sc)
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63 {
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64 // Indicate we didn't come from CallExp::semantic()
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65 return semantic(sc, 0);
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66 }
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67
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68 Expression semantic(Scope sc, int flag)
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69 {
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70 Expression e;
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71 Expression eleft;
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72 Expression eright;
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73
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74 version (LOGSEMANTIC) {
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75 printf("DotIdExp.semantic(this = %p, '%s')\n", this, toChars());
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76 //printf("e1.op = %d, '%s'\n", e1.op, Token.toChars(e1.op));
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77 }
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78
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79 //{ static int z; fflush(stdout); if (++z == 10) *(char*)0=0; }
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80
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81 static if (false) {
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82 /* Don't do semantic analysis if we'll be converting
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83 * it to a string.
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84 */
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85 if (ident == Id.stringof)
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86 {
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87 char *s = e1.toChars();
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88 e = new StringExp(loc, s, strlen(s), 'c');
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89 e = e.semantic(sc);
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90 return e;
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91 }
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92 }
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93
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94 /* Special case: rewrite this.id and super.id
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95 * to be classtype.id and baseclasstype.id
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96 * if we have no this pointer.
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97 */
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98 if ((e1.op == TOK.TOKthis || e1.op == TOK.TOKsuper) && !hasThis(sc))
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99 {
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100 ClassDeclaration cd;
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101 StructDeclaration sd;
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102 AggregateDeclaration ad;
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103
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104 ad = sc.getStructClassScope();
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105 if (ad)
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106 {
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107 cd = ad.isClassDeclaration();
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108 if (cd)
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109 {
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110 if (e1.op == TOK.TOKthis)
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111 {
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112 e = typeDotIdExp(loc, cd.type, ident);
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113 return e.semantic(sc);
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114 }
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115 else if (cd.baseClass && e1.op == TOK.TOKsuper)
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116 {
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117 e = typeDotIdExp(loc, cd.baseClass.type, ident);
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118 return e.semantic(sc);
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119 }
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120 }
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121 else
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122 {
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123 sd = ad.isStructDeclaration();
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124 if (sd)
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125 {
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126 if (e1.op == TOK.TOKthis)
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127 {
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128 e = typeDotIdExp(loc, sd.type, ident);
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129 return e.semantic(sc);
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130 }
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131 }
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132 }
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133 }
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134 }
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135
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136 UnaExp.semantic(sc);
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137
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138 if (e1.op == TOK.TOKdotexp)
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139 {
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140 DotExp de = cast(DotExp)e1;
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141 eleft = de.e1;
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142 eright = de.e2;
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143 }
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144 else
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145 {
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146 e1 = resolveProperties(sc, e1);
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147 eleft = null;
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148 eright = e1;
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149 }
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150
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151 version (DMDV2) {
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152 if (e1.op == TOK.TOKtuple && ident == Id.offsetof)
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153 {
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154 /* 'distribute' the .offsetof to each of the tuple elements.
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155 */
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156 TupleExp te = cast(TupleExp)e1;
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157 Expressions exps = new Expressions();
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158 exps.setDim(te.exps.dim);
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159 for (int i = 0; i < exps.dim; i++)
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160 {
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161 auto ee = te.exps[i];
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162 ee = ee.semantic(sc);
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163 ee = new DotIdExp(ee.loc, ee, Id.offsetof);
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164 exps[i] = ee;
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165 }
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166 e = new TupleExp(loc, exps);
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167 e = e.semantic(sc);
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168 return e;
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169 }
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170 }
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171
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172 if (e1.op == TOK.TOKtuple && ident == Id.length)
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173 {
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174 TupleExp te = cast(TupleExp)e1;
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175 e = new IntegerExp(loc, te.exps.dim, Type.tsize_t);
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176 return e;
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177 }
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178
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179 if (e1.op == TOK.TOKdottd)
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180 {
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181 error("template %s does not have property %s", e1.toChars(), ident.toChars());
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182 return e1;
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183 }
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184
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185 if (!e1.type)
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186 {
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187 error("expression %s does not have property %s", e1.toChars(), ident.toChars());
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188 return e1;
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189 }
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190
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191 Type t1b = e1.type.toBasetype();
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192
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193 if (eright.op == TOK.TOKimport) // also used for template alias's
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194 {
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195 ScopeExp ie = cast(ScopeExp)eright;
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196
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197 /* Disable access to another module's private imports.
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198 * The check for 'is sds our current module' is because
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199 * the current module should have access to its own imports.
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200 */
130
60bb0fe4563e dmdfe 2.037 first main iteration
Eldar Insafutdinov <e.insafutdinov@gmail.com>
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201 Dsymbol s = ie.sds.search(loc, ident, //0);
72
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202 (ie.sds.isModule() && ie.sds != sc.module_) ? 1 : 0);
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203 if (s)
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204 {
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205 s = s.toAlias();
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206 checkDeprecated(sc, s);
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207
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208 EnumMember em = s.isEnumMember();
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209 if (em)
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210 {
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211 e = em.value;
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212 e = e.semantic(sc);
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213 return e;
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214 }
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215
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216 VarDeclaration v = s.isVarDeclaration();
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217 if (v)
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218 {
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219 //printf("DotIdExp. Identifier '%s' is a variable, type '%s'\n", toChars(), v.type.toChars());
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220 if (v.inuse)
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221 {
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222 error("circular reference to '%s'", v.toChars());
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223 type = Type.tint32;
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224 return this;
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225 }
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226 type = v.type;
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227 if (v.needThis())
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228 {
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229 if (!eleft)
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230 eleft = new ThisExp(loc);
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231 e = new DotVarExp(loc, eleft, v);
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232 e = e.semantic(sc);
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233 }
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234 else
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235 {
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236 e = new VarExp(loc, v);
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237 if (eleft)
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238 {
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239 e = new CommaExp(loc, eleft, e);
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240 e.type = v.type;
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241 }
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242 }
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243 return e.deref();
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244 }
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245
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246 FuncDeclaration f = s.isFuncDeclaration();
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247 if (f)
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248 {
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249 //printf("it's a function\n");
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250 if (f.needThis())
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251 {
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252 if (!eleft)
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253 eleft = new ThisExp(loc);
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254 e = new DotVarExp(loc, eleft, f);
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255 e = e.semantic(sc);
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256 }
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257 else
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258 {
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259 e = new VarExp(loc, f, 1);
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260 if (eleft)
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261 { e = new CommaExp(loc, eleft, e);
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262 e.type = f.type;
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263 }
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264 }
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265 return e;
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266 }
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267 version (DMDV2) {
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268 OverloadSet o = s.isOverloadSet();
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269 if (o)
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270 {
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271 //printf("'%s' is an overload set\n", o.toChars());
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272 return new OverExp(o);
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273 }
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274 }
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275
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276 Type t = s.getType();
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277 if (t)
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278 {
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279 return new TypeExp(loc, t);
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280 }
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281
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282 TupleDeclaration tup = s.isTupleDeclaration();
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283 if (tup)
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284 {
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285 if (eleft)
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286 error("cannot have e.tuple");
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287 e = new TupleExp(loc, tup);
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288 e = e.semantic(sc);
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289 return e;
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290 }
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291
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292 ScopeDsymbol sds = s.isScopeDsymbol();
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293 if (sds)
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294 {
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diff changeset
295 //printf("it's a ScopeDsymbol\n");
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296 e = new ScopeExp(loc, sds);
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297 e = e.semantic(sc);
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diff changeset
298 if (eleft)
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diff changeset
299 e = new DotExp(loc, eleft, e);
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300 return e;
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
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301 }
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diff changeset
302
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
303 Import imp = s.isImport();
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diff changeset
304 if (imp)
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
diff changeset
305 {
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
diff changeset
306 ScopeExp iee = new ScopeExp(loc, imp.pkg);
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Trass3r
parents: 0
diff changeset
307 return iee.semantic(sc);
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Trass3r
parents: 0
diff changeset
308 }
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
309
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
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diff changeset
310 // BUG: handle other cases like in IdentifierExp.semantic()
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Trass3r
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diff changeset
311 version (DEBUG) {
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diff changeset
312 printf("s = '%s', kind = '%s'\n", s.toChars(), s.kind());
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diff changeset
313 }
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
314 assert(0);
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Trass3r
parents: 0
diff changeset
315 }
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parents: 0
diff changeset
316 else if (ident is Id.stringof_)
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Trass3r
parents: 0
diff changeset
317 {
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Trass3r
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diff changeset
318 string ss = ie.toChars();
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Trass3r
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diff changeset
319 e = new StringExp(loc, ss, 'c');
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Trass3r
parents: 0
diff changeset
320 e = e.semantic(sc);
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Trass3r
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diff changeset
321 return e;
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Trass3r
parents: 0
diff changeset
322 }
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
323 error("undefined identifier %s", toChars());
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
324 type = Type.tvoid;
2e2a5c3f943a reduced warnings by adding override to the methods
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325 return this;
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Trass3r
parents: 0
diff changeset
326 }
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Trass3r
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diff changeset
327 else if (t1b.ty == TY.Tpointer &&
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Trass3r
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diff changeset
328 ident !is Id.init_ && ident !is Id.__sizeof &&
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Trass3r
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diff changeset
329 ident !is Id.alignof_ && ident !is Id.offsetof &&
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330 ident !is Id.mangleof_ && ident !is Id.stringof_)
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parents: 0
diff changeset
331 { /* Rewrite:
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
332 * p.ident
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
333 * as:
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
334 * (*p).ident
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diff changeset
335 */
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diff changeset
336 e = new PtrExp(loc, e1);
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
diff changeset
337 e.type = (cast(TypePointer)t1b).next;
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
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338 return e.type.dotExp(sc, e, ident);
2e2a5c3f943a reduced warnings by adding override to the methods
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parents: 0
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339 }
2e2a5c3f943a reduced warnings by adding override to the methods
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diff changeset
340 ///version (DMDV2) {
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
diff changeset
341 else if (t1b.ty == TY.Tarray ||
2e2a5c3f943a reduced warnings by adding override to the methods
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parents: 0
diff changeset
342 t1b.ty == TY.Tsarray ||
2e2a5c3f943a reduced warnings by adding override to the methods
Trass3r
parents: 0
diff changeset
343 t1b.ty == TY.Taarray)
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344 {
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345 /* If ident is not a valid property, rewrite:
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346 * e1.ident
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347 * as:
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348 * .ident(e1)
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349 */
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350 uint errors = global.errors;
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351 global.gag++;
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352 Type t1 = e1.type;
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353 e = e1.type.dotExp(sc, e1, ident);
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354 global.gag--;
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355 if (errors != global.errors) // if failed to find the property
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356 {
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357 global.errors = errors;
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358 e1.type = t1; // kludge to restore type
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359 e = new DotIdExp(loc, new IdentifierExp(loc, Id.empty), ident);
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360 e = new CallExp(loc, e, e1);
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361 }
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362 e = e.semantic(sc);
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363 return e;
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364 }
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365 ///}
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366 else
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367 {
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368 e = e1.type.dotExp(sc, e1, ident);
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369 if (!(flag && e.op == TOK.TOKdotti)) // let CallExp::semantic() handle this
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370 e = e.semantic(sc);
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371 return e;
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372 }
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373 }
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374
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375 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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376 {
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377 //printf("DotIdExp.toCBuffer()\n");
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378 expToCBuffer(buf, hgs, e1, PREC.PREC_primary);
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379 buf.writeByte('.');
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380 buf.writestring(ident.toChars());
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381 }
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382
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383 override void dump(int i)
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384 {
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385 assert(false);
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386 }
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387 }
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