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1 module dmd.TypeTypedef;
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2
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3 import dmd.Type;
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4 import dmd.TypedefDeclaration;
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5 import dmd.MOD;
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6 import dmd.Loc;
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7 import dmd.Id;
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8 import dmd.Dsymbol;
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9 import dmd.Scope;
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10 import dmd.OutBuffer;
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11 import dmd.HdrGenState;
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12 import dmd.Expression;
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13 import dmd.Identifier;
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14 import dmd.ArrayTypes;
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15 import dmd.MATCH;
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16 import dmd.TypeSArray;
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17 import dmd.CppMangleState;
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18 import dmd.TypeInfoDeclaration;
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19 import dmd.TypeInfoTypedefDeclaration;
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20 import dmd.TY;
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21
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22 import dmd.backend.TYPE;
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23 import dmd.backend.dt_t;
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24
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25 class TypeTypedef : Type
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26 {
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27 TypedefDeclaration sym;
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28
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29 this(TypedefDeclaration sym)
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30 {
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31 super(Ttypedef);
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32 this.sym = sym;
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33 }
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34
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35 version (DumbClone) {
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36 } else {
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37 Type clone()
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38 {
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39 assert(false);
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40 }
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41 }
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42
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43 Type syntaxCopy()
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44 {
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45 assert(false);
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46 }
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47
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48 ulong size(Loc loc)
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49 {
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50 return sym.basetype.size(loc);
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51 }
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52
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53 uint alignsize()
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54 {
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55 assert(false);
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56 }
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57
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58 string toChars()
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59 {
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60 assert(false);
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61 }
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62
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63 Type semantic(Loc loc, Scope sc)
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64 {
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65 //printf("TypeTypedef::semantic(%s), sem = %d\n", toChars(), sym->sem);
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66 sym.semantic(sc);
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67 return merge();
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68 }
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69
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70 Dsymbol toDsymbol(Scope sc)
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71 {
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72 return sym;
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73 }
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74
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75 void toDecoBuffer(OutBuffer buf, int flag)
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76 {
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77 Type.toDecoBuffer(buf, flag);
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78 string name = sym.mangle();
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79 buf.printf("%s", name);
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80 }
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81
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82 void toCBuffer2(OutBuffer buf, HdrGenState* hgs, MOD mod)
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83 {
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84 assert(false);
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85 }
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86
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87 Expression dotExp(Scope sc, Expression e, Identifier ident)
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88 {
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89 version (LOGDOTEXP) {
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90 printf("TypeTypedef.dotExp(e = '%s', ident = '%s') '%s'\n", e.toChars(), ident.toChars(), toChars());
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91 }
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92 if (ident is Id.init_)
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93 {
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94 return Type.dotExp(sc, e, ident);
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95 }
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96 return sym.basetype.dotExp(sc, e, ident);
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97 }
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98
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99 Expression getProperty(Loc loc, Identifier ident)
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100 {
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101 assert(false);
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102 }
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103
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104 bool isbit()
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105 {
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106 assert(false);
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107 }
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108
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109 bool isintegral()
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110 {
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111 //printf("TypeTypedef::isintegral()\n");
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112 //printf("sym = '%s'\n", sym->toChars());
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113 //printf("basetype = '%s'\n", sym->basetype->toChars());
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114 return sym.basetype.isintegral();
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115 }
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116
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117 bool isfloating()
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118 {
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119 return sym.basetype.isfloating();
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120 }
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121
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122 bool isreal()
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123 {
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124 return sym.basetype.isreal();
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125 }
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126
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127 bool isimaginary()
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128 {
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129 return sym.basetype.isimaginary();
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130 }
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131
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132 bool iscomplex()
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133 {
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134 return sym.basetype.iscomplex();
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135 }
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136
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137 bool isscalar()
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138 {
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139 return sym.basetype.isscalar();
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140 }
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141
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142 bool isunsigned()
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143 {
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144 return sym.basetype.isunsigned();
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145 }
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146
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147 bool checkBoolean()
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148 {
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149 assert(false);
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150 }
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151
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152 int isAssignable()
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153 {
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154 return sym.basetype.isAssignable();
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155 }
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156
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157 Type toBasetype()
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158 {
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159 if (sym.inuse)
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160 {
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161 sym.error("circular definition");
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162 sym.basetype = Type.terror;
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163 return Type.terror;
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164 }
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165 sym.inuse = 1;
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166 Type t = sym.basetype.toBasetype();
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167 sym.inuse = 0;
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168 t = t.addMod(mod);
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169 return t;
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170 }
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171
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172 MATCH implicitConvTo(Type to)
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173 {
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174 MATCH m;
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175
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176 //printf("TypeTypedef::implicitConvTo(to = %s) %s\n", to->toChars(), toChars());
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177 if (equals(to))
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178 m = MATCHexact; // exact match
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179 else if (sym.basetype.implicitConvTo(to))
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180 m = MATCHconvert; // match with conversions
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181 else if (ty == to.ty && sym == (cast(TypeTypedef)to).sym)
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182 {
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183 m = constConv(to);
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184 }
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185 else
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186 m = MATCHnomatch; // no match
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187 return m;
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188 }
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189
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190 MATCH constConv(Type to)
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191 {
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192 assert(false);
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193 }
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194
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195 Expression defaultInit(Loc loc)
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196 {
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197 Expression e;
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198 Type bt;
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199
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200 version (LOGDEFAULTINIT) {
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201 printf("TypeTypedef::defaultInit() '%s'\n", toChars());
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202 }
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203 if (sym.init)
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204 {
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205 //sym->init->toExpression()->print();
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206 return sym.init.toExpression();
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207 }
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208 bt = sym.basetype;
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209 e = bt.defaultInit(loc);
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210 e.type = this;
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211 while (bt.ty == Tsarray)
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212 {
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213 TypeSArray tsa = cast(TypeSArray)bt;
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214 e.type = tsa.next;
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215 bt = tsa.next.toBasetype();
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216 }
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217 return e;
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218 }
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219
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220 bool isZeroInit(Loc loc)
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221 {
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222 if (sym.init)
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223 {
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224 if (sym.init.isVoidInitializer())
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225 return true; // initialize voids to 0
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226 Expression e = sym.init.toExpression();
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227 if (e && e.isBool(false))
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228 return true;
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229
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230 return false; // assume not
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231 }
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232 if (sym.inuse)
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233 {
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234 sym.error("circular definition");
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235 sym.basetype = Type.terror;
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236 }
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237 sym.inuse = 1;
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238 bool result = sym.basetype.isZeroInit(loc);
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239 sym.inuse = 0;
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240
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241 return result;
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242 }
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243
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244 dt_t** toDt(dt_t** pdt)
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245 {
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246 if (sym.init)
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247 {
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248 dt_t* dt = sym.init.toDt();
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249
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250 while (*pdt)
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251 pdt = &((*pdt).DTnext);
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252 *pdt = dt;
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253 return pdt;
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254 }
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255
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256 sym.basetype.toDt(pdt);
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257 return pdt;
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258 }
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259
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260 MATCH deduceType(Scope sc, Type tparam, TemplateParameters parameters, Objects dedtypes)
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261 {
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262 assert(false);
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263 }
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264
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265 TypeInfoDeclaration getTypeInfoDeclaration()
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266 {
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267 return new TypeInfoTypedefDeclaration(this);
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268 }
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269
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270 bool hasPointers()
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271 {
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272 return toBasetype().hasPointers();
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273 }
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274
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275 Type toHeadMutable()
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276 {
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277 assert(false);
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278 }
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279
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280 version (CPP_MANGLE) {
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281 void toCppMangle(OutBuffer buf, CppMangleState* cms)
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282 {
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283 assert(false);
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284 }
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285 }
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286
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287 type* toCtype()
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288 {
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289 return sym.basetype.toCtype();
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290 }
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291
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292 type* toCParamtype()
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293 {
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294 return sym.basetype.toCParamtype();
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295 }
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296 } |
