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1 module dmd.TypeTypeof;
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2
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3 import dmd.TypeQualified;
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4 import dmd.Expression;
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5 import dmd.Identifier;
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6 import dmd.Scope;
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7 import dmd.Loc;
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8 import dmd.MOD;
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9 import dmd.Type;
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10 import dmd.Dsymbol;
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11 import dmd.OutBuffer;
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12 import dmd.HdrGenState;
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13 import dmd.TY;
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14 import dmd.Util;
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15 import dmd.TOK;
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16
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17 class TypeTypeof : TypeQualified
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18 {
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19 Expression exp;
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20
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21 this(Loc loc, Expression exp)
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22 {
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23 super(TY.Ttypeof, loc);
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24 this.exp = exp;
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25 }
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26
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27 version (DumbClone) {
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28 } else {
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29 Type clone()
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30 {
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31 assert(false);
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32 }
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33 }
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34
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35 Type syntaxCopy()
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36 {
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37 assert(false);
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38 }
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39
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40 Dsymbol toDsymbol(Scope sc)
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41 {
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42 Type t = semantic(loc, sc);
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43 if (t is this)
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44 return null;
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45
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46 return t.toDsymbol(sc);
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47 }
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48
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49 void toCBuffer2(OutBuffer buf, HdrGenState* hgs, MOD mod)
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50 {
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51 assert(false);
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52 }
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53
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54 Type semantic(Loc loc, Scope sc)
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55 {
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56 Expression e;
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57 Type t;
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58
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59 //printf("TypeTypeof.semantic() %p\n", this);
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60
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61 //static int nest; if (++nest == 50) *(char*)0=0;
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62
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63 /+static if (false) {
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64 /* Special case for typeof(this) and typeof(super) since both
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65 * should work even if they are not inside a non-static member function
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66 */
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67 if (exp.op == TOK.TOKthis || exp.op == TOK.TOKsuper)
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68 {
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69 / / Find enclosing struct or class
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70 for (Dsymbol *s = sc.parent; 1; s = s.parent)
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71 {
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72 ClassDeclaration *cd;
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73 StructDeclaration *sd;
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74
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75 if (!s)
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76 {
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77 error(loc, "%s is not in a struct or class scope", exp.toChars());
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78 goto Lerr;
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79 }
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80 cd = s.isClassDeclaration();
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81 if (cd)
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82 {
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83 if (exp.op == TOK.TOKsuper)
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84 {
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85 cd = cd.baseClass;
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86 if (!cd)
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87 { error(loc, "class %s has no 'super'", s.toChars());
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88 goto Lerr;
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89 }
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90 }
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91 t = cd.type;
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92 break;
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93 }
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94 sd = s.isStructDeclaration();
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95 if (sd)
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96 {
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97 if (exp.op == TOK.TOKsuper)
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98 {
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99 error(loc, "struct %s has no 'super'", sd.toChars());
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100 goto Lerr;
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101 }
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102 t = sd.type.pointerTo();
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103 break;
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104 }
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105 }
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106 }
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107 else
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108 }+/
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109 {
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110 sc.intypeof++;
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111 exp = exp.semantic(sc);
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112 sc.intypeof--;
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113 if (exp.op == TOK.TOKtype)
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114 {
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115 error(loc, "argument %s to typeof is not an expression", exp.toChars());
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116 }
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117 t = exp.type;
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118 if (!t)
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119 {
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120 error(loc, "expression (%s) has no type", exp.toChars());
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121 goto Lerr;
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122 }
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123 if (t.ty == TY.Ttypeof)
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124 error(loc, "forward reference to %s", toChars());
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125
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126 /* typeof should reflect the true type,
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127 * not what 'auto' would have gotten us.
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128 */
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129 //t = t.toHeadMutable();
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130 }
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131 if (idents.dim)
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132 {
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133 Dsymbol s = t.toDsymbol(sc);
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134 for (size_t i = 0; i < idents.dim; i++)
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135 {
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136 if (!s)
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137 break;
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138 Identifier id = cast(Identifier)idents.data[i];
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139 s = s.searchX(loc, sc, id);
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140 }
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141
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142 if (s)
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143 {
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144 t = s.getType();
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145 if (!t)
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146 {
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147 error(loc, "%s is not a type", s.toChars());
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148 goto Lerr;
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149 }
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150 }
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151 else
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152 {
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153 error(loc, "cannot resolve .property for %s", toChars());
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154 goto Lerr;
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155 }
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156 }
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157 return t;
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158
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159 Lerr:
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160 return tvoid;
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161 }
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162
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163 ulong size(Loc loc)
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164 {
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165 assert(false);
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166 }
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167 } |
