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1
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1
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2 // Compiler implementation of the D programming language
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3 // Copyright (c) 1999-2006 by Digital Mars
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4 // All Rights Reserved
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5 // written by Walter Bright
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6 // http://www.digitalmars.com
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7 // License for redistribution is by either the Artistic License
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8 // in artistic.txt, or the GNU General Public License in gnu.txt.
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9 // See the included readme.txt for details.
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10
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <assert.h>
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14
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15 #include "root.h"
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16 #include "mem.h"
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17
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18 #include "enum.h"
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19 #include "init.h"
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20 #include "attrib.h"
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21 #include "declaration.h"
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22 #include "aggregate.h"
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23 #include "id.h"
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24 #include "mtype.h"
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25 #include "scope.h"
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26 #include "module.h"
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27 #include "expression.h"
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28 #include "statement.h"
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29
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30 /********************************* ClassDeclaration ****************************/
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31
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32 ClassDeclaration *ClassDeclaration::classinfo;
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33 ClassDeclaration *ClassDeclaration::object;
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34
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35 ClassDeclaration::ClassDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses)
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36 : AggregateDeclaration(loc, id)
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37 {
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38 static char msg[] = "only object.d can define this reserved class name";
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39
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40 if (baseclasses)
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41 this->baseclasses = *baseclasses;
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42 baseClass = NULL;
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43
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44 interfaces_dim = 0;
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45 interfaces = NULL;
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46
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47 vtblInterfaces = NULL;
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48
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49 //printf("ClassDeclaration(%s), dim = %d\n", id->toChars(), this->baseclasses.dim);
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50
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51 // For forward references
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52 type = new TypeClass(this);
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53 handle = type;
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54
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55 ctor = NULL;
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56 defaultCtor = NULL;
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57 staticCtor = NULL;
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58 staticDtor = NULL;
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59
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60 vtblsym = NULL;
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61 vclassinfo = NULL;
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62
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63 if (id)
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64 { // Look for special class names
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65
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66 if (id == Id::__sizeof || id == Id::alignof || id == Id::mangleof)
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67 error("illegal class name");
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68
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69 // BUG: What if this is the wrong TypeInfo, i.e. it is nested?
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70 if (id->toChars()[0] == 'T')
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71 {
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72 if (id == Id::TypeInfo)
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73 { if (Type::typeinfo)
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74 Type::typeinfo->error("%s", msg);
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75 Type::typeinfo = this;
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76 }
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77
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78 if (id == Id::TypeInfo_Class)
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79 { if (Type::typeinfoclass)
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80 Type::typeinfoclass->error("%s", msg);
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81 Type::typeinfoclass = this;
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82 }
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83
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84 if (id == Id::TypeInfo_Interface)
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85 { if (Type::typeinfointerface)
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86 Type::typeinfointerface->error("%s", msg);
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87 Type::typeinfointerface = this;
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88 }
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89
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90 if (id == Id::TypeInfo_Struct)
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91 { if (Type::typeinfostruct)
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92 Type::typeinfostruct->error("%s", msg);
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93 Type::typeinfostruct = this;
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94 }
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95
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96 if (id == Id::TypeInfo_Typedef)
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97 { if (Type::typeinfotypedef)
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98 Type::typeinfotypedef->error("%s", msg);
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99 Type::typeinfotypedef = this;
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100 }
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101
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102 if (id == Id::TypeInfo_Pointer)
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103 { if (Type::typeinfopointer)
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104 Type::typeinfopointer->error("%s", msg);
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105 Type::typeinfopointer = this;
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106 }
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107
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108 if (id == Id::TypeInfo_Array)
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109 { if (Type::typeinfoarray)
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110 Type::typeinfoarray->error("%s", msg);
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111 Type::typeinfoarray = this;
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112 }
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113
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114 if (id == Id::TypeInfo_StaticArray)
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115 { //if (Type::typeinfostaticarray)
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116 //Type::typeinfostaticarray->error("%s", msg);
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117 Type::typeinfostaticarray = this;
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118 }
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119
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120 if (id == Id::TypeInfo_AssociativeArray)
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121 { if (Type::typeinfoassociativearray)
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122 Type::typeinfoassociativearray->error("%s", msg);
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123 Type::typeinfoassociativearray = this;
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124 }
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125
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126 if (id == Id::TypeInfo_Enum)
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127 { if (Type::typeinfoenum)
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128 Type::typeinfoenum->error("%s", msg);
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129 Type::typeinfoenum = this;
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130 }
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131
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132 if (id == Id::TypeInfo_Function)
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133 { if (Type::typeinfofunction)
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134 Type::typeinfofunction->error("%s", msg);
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135 Type::typeinfofunction = this;
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136 }
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137
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138 if (id == Id::TypeInfo_Delegate)
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139 { if (Type::typeinfodelegate)
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140 Type::typeinfodelegate->error("%s", msg);
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141 Type::typeinfodelegate = this;
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142 }
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143
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144 if (id == Id::TypeInfo_Tuple)
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145 { if (Type::typeinfotypelist)
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146 Type::typeinfotypelist->error("%s", msg);
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147 Type::typeinfotypelist = this;
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148 }
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149 }
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150
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151 if (id == Id::Object)
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152 { if (object)
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153 object->error("%s", msg);
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154 object = this;
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155 }
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156
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157 if (id == Id::ClassInfo)
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158 { if (classinfo)
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159 classinfo->error("%s", msg);
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160 classinfo = this;
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161 }
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162
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163 if (id == Id::ModuleInfo)
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164 { if (Module::moduleinfo)
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165 Module::moduleinfo->error("%s", msg);
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166 Module::moduleinfo = this;
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167 }
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168 }
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169
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170 com = 0;
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171 #if 0
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172 if (id == Id::IUnknown) // IUnknown is the root of all COM objects
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173 com = 1;
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174 #endif
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175 isauto = 0;
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176 isabstract = 0;
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177 isnested = 0;
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178 vthis = NULL;
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179 }
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180
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181 Dsymbol *ClassDeclaration::syntaxCopy(Dsymbol *s)
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182 {
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183 ClassDeclaration *cd;
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184
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185 //printf("ClassDeclaration::syntaxCopy('%s')\n", toChars());
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186 if (s)
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187 cd = (ClassDeclaration *)s;
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188 else
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189 cd = new ClassDeclaration(loc, ident, NULL);
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190
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191 cd->storage_class |= storage_class;
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192
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193 cd->baseclasses.setDim(this->baseclasses.dim);
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194 for (int i = 0; i < cd->baseclasses.dim; i++)
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195 {
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196 BaseClass *b = (BaseClass *)this->baseclasses.data[i];
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197 BaseClass *b2 = new BaseClass(b->type->syntaxCopy(), b->protection);
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198 cd->baseclasses.data[i] = b2;
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199 }
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200
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201 ScopeDsymbol::syntaxCopy(cd);
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202 return cd;
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203 }
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204
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205 void ClassDeclaration::semantic(Scope *sc)
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206 { int i;
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207 unsigned offset;
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208
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209 //printf("ClassDeclaration::semantic(%s), type = %p, sizeok = %d, this = %p\n", toChars(), type, sizeok, this);
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210 //printf("\tparent = %p, '%s'\n", sc->parent, sc->parent ? sc->parent->toChars() : "");
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211 //printf("sc->stc = %x\n", sc->stc);
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212
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213 //{ static int n; if (++n == 20) *(char*)0=0; }
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214
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215 if (!ident) // if anonymous class
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216 { char *id = "__anonclass";
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217
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218 ident = Identifier::generateId(id);
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219 }
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220
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221 if (!scope)
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222 {
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223 if (!parent && sc->parent && !sc->parent->isModule())
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224 parent = sc->parent;
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225
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226 type = type->semantic(loc, sc);
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227 handle = handle->semantic(loc, sc);
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228 }
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229 if (!members) // if forward reference
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230 { //printf("\tclass '%s' is forward referenced\n", toChars());
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231 return;
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232 }
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233 if (symtab)
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234 { if (!scope)
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235 { //printf("\tsemantic for '%s' is already completed\n", toChars());
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236 return; // semantic() already completed
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237 }
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238 }
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239 else
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240 symtab = new DsymbolTable();
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241
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242 Scope *scx = NULL;
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243 if (scope)
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244 { sc = scope;
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245 scx = scope; // save so we don't make redundant copies
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246 scope = NULL;
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247 }
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248 #ifdef IN_GCC
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249 methods.setDim(0);
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250 #endif
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251
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252 // Expand any tuples in baseclasses[]
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253 for (i = 0; i < baseclasses.dim; )
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254 { BaseClass *b = (BaseClass *)baseclasses.data[i];
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255 b->type = b->type->semantic(loc, sc);
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256 Type *tb = b->type->toBasetype();
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257
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258 if (tb->ty == Ttuple)
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259 { TypeTuple *tup = (TypeTuple *)tb;
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260 enum PROT protection = b->protection;
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261 baseclasses.remove(i);
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262 size_t dim = Argument::dim(tup->arguments);
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263 for (size_t j = 0; j < dim; j++)
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264 { Argument *arg = Argument::getNth(tup->arguments, j);
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265 b = new BaseClass(arg->type, protection);
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266 baseclasses.insert(i + j, b);
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267 }
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268 }
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269 else
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270 i++;
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271 }
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272
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273 // See if there's a base class as first in baseclasses[]
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274 if (baseclasses.dim)
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275 { TypeClass *tc;
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276 BaseClass *b;
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277 Type *tb;
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278
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279 b = (BaseClass *)baseclasses.data[0];
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280 //b->type = b->type->semantic(loc, sc);
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281 tb = b->type->toBasetype();
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282 if (tb->ty != Tclass)
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283 { error("base type must be class or interface, not %s", b->type->toChars());
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284 baseclasses.remove(0);
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285 }
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286 else
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287 {
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288 tc = (TypeClass *)(tb);
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289 if (tc->sym->isInterfaceDeclaration())
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290 ;
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291 else
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292 {
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293 for (ClassDeclaration *cdb = tc->sym; cdb; cdb = cdb->baseClass)
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294 {
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295 if (cdb == this)
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296 {
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297 error("circular inheritance");
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298 baseclasses.remove(0);
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299 goto L7;
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300 }
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301 }
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302 if (!tc->sym->symtab || tc->sym->scope || tc->sym->sizeok == 0)
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303 {
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304 //error("forward reference of base class %s", baseClass->toChars());
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305 // Forward reference of base class, try again later
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306 //printf("\ttry later, forward reference of base class %s\n", tc->sym->toChars());
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307 scope = scx ? scx : new Scope(*sc);
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308 scope->setNoFree();
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309 scope->module->addDeferredSemantic(this);
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310 return;
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311 }
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312 else
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313 { baseClass = tc->sym;
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314 b->base = baseClass;
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315 }
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316 L7: ;
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317 }
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318 }
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319 }
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320
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321 // Treat the remaining entries in baseclasses as interfaces
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322 // Check for errors, handle forward references
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323 for (i = (baseClass ? 1 : 0); i < baseclasses.dim; )
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324 { TypeClass *tc;
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325 BaseClass *b;
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326 Type *tb;
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327
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328 b = (BaseClass *)baseclasses.data[i];
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329 b->type = b->type->semantic(loc, sc);
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330 tb = b->type->toBasetype();
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331 if (tb->ty == Tclass)
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332 tc = (TypeClass *)tb;
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333 else
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334 tc = NULL;
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335 if (!tc || !tc->sym->isInterfaceDeclaration())
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336 {
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337 error("base type must be interface, not %s", b->type->toChars());
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338 baseclasses.remove(i);
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339 continue;
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340 }
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341 else
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342 {
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343 // Check for duplicate interfaces
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344 for (size_t j = (baseClass ? 1 : 0); j < i; j++)
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345 {
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346 BaseClass *b2 = (BaseClass *)baseclasses.data[j];
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347 if (b2->base == tc->sym)
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348 error("inherits from duplicate interface %s", b2->base->toChars());
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349 }
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350
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351 b->base = tc->sym;
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352 if (!b->base->symtab || b->base->scope)
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353 {
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354 //error("forward reference of base class %s", baseClass->toChars());
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355 // Forward reference of base, try again later
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356 //printf("\ttry later, forward reference of base %s\n", baseClass->toChars());
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357 scope = scx ? scx : new Scope(*sc);
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358 scope->setNoFree();
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359 scope->module->addDeferredSemantic(this);
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360 return;
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361 }
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362 }
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363 i++;
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364 }
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365
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366
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367 // If no base class, and this is not an Object, use Object as base class
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368 if (!baseClass && ident != Id::Object)
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369 {
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370 // BUG: what if Object is redefined in an inner scope?
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371 Type *tbase = new TypeIdentifier(0, Id::Object);
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372 BaseClass *b;
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373 TypeClass *tc;
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374 Type *bt;
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375
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376 if (!object)
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377 {
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378 error("missing or corrupt object.d");
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379 fatal();
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380 }
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381 bt = tbase->semantic(loc, sc)->toBasetype();
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382 b = new BaseClass(bt, PROTpublic);
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383 baseclasses.shift(b);
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384 assert(b->type->ty == Tclass);
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385 tc = (TypeClass *)(b->type);
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386 baseClass = tc->sym;
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387 assert(!baseClass->isInterfaceDeclaration());
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388 b->base = baseClass;
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389 }
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390
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391 interfaces_dim = baseclasses.dim;
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392 interfaces = (BaseClass **)baseclasses.data;
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393
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394
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395 if (baseClass)
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396 {
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397 if (baseClass->storage_class & STCfinal)
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398 error("cannot inherit from final class %s", baseClass->toChars());
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399
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400 interfaces_dim--;
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401 interfaces++;
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402
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403 // Copy vtbl[] from base class
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404 vtbl.setDim(baseClass->vtbl.dim);
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405 memcpy(vtbl.data, baseClass->vtbl.data, sizeof(void *) * vtbl.dim);
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406
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407 // Inherit properties from base class
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408 com = baseClass->isCOMclass();
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409 isauto = baseClass->isauto;
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410 vthis = baseClass->vthis;
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411 }
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412 else
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413 {
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414 // No base class, so this is the root of the class hierarchy
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415 vtbl.setDim(0);
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416 vtbl.push(this); // leave room for classinfo as first member
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417 }
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418
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419 protection = sc->protection;
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420 storage_class |= sc->stc;
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421
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422 if (sizeok == 0)
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423 {
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424 interfaceSemantic(sc);
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425
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426 for (i = 0; i < members->dim; i++)
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427 {
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428 Dsymbol *s = (Dsymbol *)members->data[i];
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429 s->addMember(sc, this, 1);
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430 }
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431
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432 /* If this is a nested class, add the hidden 'this'
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433 * member which is a pointer to the enclosing scope.
|
|
|
434 */
|
|
|
435 if (vthis) // if inheriting from nested class
|
|
|
436 { // Use the base class's 'this' member
|
|
|
437 isnested = 1;
|
|
|
438 if (storage_class & STCstatic)
|
|
|
439 error("static class cannot inherit from nested class %s", baseClass->toChars());
|
|
|
440 if (toParent2() != baseClass->toParent2())
|
|
|
441 error("super class %s is nested within %s, not %s",
|
|
|
442 baseClass->toChars(),
|
|
|
443 baseClass->toParent2()->toChars(),
|
|
|
444 toParent2()->toChars());
|
|
|
445 }
|
|
|
446 else if (!(storage_class & STCstatic))
|
|
|
447 { Dsymbol *s = toParent2();
|
|
|
448 if (s)
|
|
|
449 {
|
|
|
450 ClassDeclaration *cd = s->isClassDeclaration();
|
|
|
451 FuncDeclaration *fd = s->isFuncDeclaration();
|
|
|
452
|
|
|
453
|
|
|
454 if (cd || fd)
|
|
|
455 { isnested = 1;
|
|
|
456 Type *t;
|
|
|
457 if (cd)
|
|
|
458 t = cd->type;
|
|
|
459 else if (fd)
|
|
|
460 { AggregateDeclaration *ad = fd->isMember2();
|
|
|
461 if (ad)
|
|
|
462 t = ad->handle;
|
|
|
463 else
|
|
|
464 {
|
|
|
465 t = new TypePointer(Type::tvoid);
|
|
|
466 t = t->semantic(0, sc);
|
|
|
467 }
|
|
|
468 }
|
|
|
469 else
|
|
|
470 assert(0);
|
|
|
471 assert(!vthis);
|
|
|
472 vthis = new ThisDeclaration(t);
|
|
|
473 members->push(vthis);
|
|
|
474 }
|
|
|
475 }
|
|
|
476 }
|
|
|
477 }
|
|
|
478
|
|
|
479 if (storage_class & (STCauto | STCscope))
|
|
|
480 isauto = 1;
|
|
|
481 if (storage_class & STCabstract)
|
|
|
482 isabstract = 1;
|
|
|
483 if (storage_class & STCdeprecated)
|
|
|
484 isdeprecated = 1;
|
|
|
485
|
|
|
486 sc = sc->push(this);
|
|
|
487 sc->stc &= ~(STCfinal | STCauto | STCscope | STCstatic |
|
|
|
488 STCabstract | STCdeprecated);
|
|
|
489 sc->parent = this;
|
|
|
490 sc->inunion = 0;
|
|
|
491
|
|
|
492 if (isCOMclass())
|
|
|
493 sc->linkage = LINKwindows;
|
|
|
494 sc->protection = PROTpublic;
|
|
|
495 sc->explicitProtection = 0;
|
|
|
496 sc->structalign = 8;
|
|
|
497 structalign = sc->structalign;
|
|
|
498 if (baseClass)
|
|
|
499 { sc->offset = baseClass->structsize;
|
|
|
500 alignsize = baseClass->alignsize;
|
|
|
501 // if (isnested)
|
|
|
502 // sc->offset += PTRSIZE; // room for uplevel context pointer
|
|
|
503 }
|
|
|
504 else
|
|
|
505 { sc->offset = 8; // allow room for vptr[] and monitor
|
|
|
506 alignsize = 4;
|
|
|
507 }
|
|
|
508 structsize = sc->offset;
|
|
|
509 Scope scsave = *sc;
|
|
|
510 int members_dim = members->dim;
|
|
|
511 sizeok = 0;
|
|
|
512 for (i = 0; i < members_dim; i++)
|
|
|
513 {
|
|
|
514 Dsymbol *s = (Dsymbol *)members->data[i];
|
|
|
515 s->semantic(sc);
|
|
|
516 }
|
|
|
517
|
|
|
518 if (sizeok == 2)
|
|
|
519 { // semantic() failed because of forward references.
|
|
|
520 // Unwind what we did, and defer it for later
|
|
|
521 fields.setDim(0);
|
|
|
522 structsize = 0;
|
|
|
523 alignsize = 0;
|
|
|
524 structalign = 0;
|
|
|
525
|
|
|
526 sc = sc->pop();
|
|
|
527
|
|
|
528 scope = scx ? scx : new Scope(*sc);
|
|
|
529 scope->setNoFree();
|
|
|
530 scope->module->addDeferredSemantic(this);
|
|
|
531
|
|
|
532 //printf("\tsemantic('%s') failed\n", toChars());
|
|
|
533 return;
|
|
|
534 }
|
|
|
535
|
|
|
536 //printf("\tsemantic('%s') successful\n", toChars());
|
|
|
537
|
|
|
538 structsize = sc->offset;
|
|
|
539 //members->print();
|
|
|
540
|
|
|
541 /* Look for special member functions.
|
|
|
542 * They must be in this class, not in a base class.
|
|
|
543 */
|
|
|
544 ctor = (CtorDeclaration *)search(0, Id::ctor, 0);
|
|
|
545 if (ctor && ctor->toParent() != this)
|
|
|
546 ctor = NULL;
|
|
|
547
|
|
|
548 // dtor = (DtorDeclaration *)search(Id::dtor, 0);
|
|
|
549 // if (dtor && dtor->toParent() != this)
|
|
|
550 // dtor = NULL;
|
|
|
551
|
|
|
552 // inv = (InvariantDeclaration *)search(Id::classInvariant, 0);
|
|
|
553 // if (inv && inv->toParent() != this)
|
|
|
554 // inv = NULL;
|
|
|
555
|
|
|
556 // Can be in base class
|
|
|
557 aggNew = (NewDeclaration *)search(0, Id::classNew, 0);
|
|
|
558 aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0);
|
|
|
559
|
|
|
560 // If this class has no constructor, but base class does, create
|
|
|
561 // a constructor:
|
|
|
562 // this() { }
|
|
|
563 if (!ctor && baseClass && baseClass->ctor)
|
|
|
564 {
|
|
|
565 //printf("Creating default this(){} for class %s\n", toChars());
|
|
|
566 ctor = new CtorDeclaration(0, 0, NULL, 0);
|
|
|
567 ctor->fbody = new CompoundStatement(0, new Statements());
|
|
|
568 members->push(ctor);
|
|
|
569 ctor->addMember(sc, this, 1);
|
|
|
570 *sc = scsave;
|
|
|
571 sc->offset = structsize;
|
|
|
572 ctor->semantic(sc);
|
|
|
573 defaultCtor = ctor;
|
|
|
574 }
|
|
|
575
|
|
|
576 #if 0
|
|
|
577 if (baseClass)
|
|
|
578 { if (!aggDelete)
|
|
|
579 aggDelete = baseClass->aggDelete;
|
|
|
580 if (!aggNew)
|
|
|
581 aggNew = baseClass->aggNew;
|
|
|
582 }
|
|
|
583 #endif
|
|
|
584
|
|
|
585 // Allocate instance of each new interface
|
|
|
586 for (i = 0; i < vtblInterfaces->dim; i++)
|
|
|
587 {
|
|
|
588 BaseClass *b = (BaseClass *)vtblInterfaces->data[i];
|
|
|
589 unsigned thissize = PTRSIZE;
|
|
|
590
|
|
|
591 alignmember(structalign, thissize, &sc->offset);
|
|
|
592 assert(b->offset == 0);
|
|
|
593 b->offset = sc->offset;
|
|
|
594
|
|
|
595 // Take care of single inheritance offsets
|
|
|
596 while (b->baseInterfaces_dim)
|
|
|
597 {
|
|
|
598 b = &b->baseInterfaces[0];
|
|
|
599 b->offset = sc->offset;
|
|
|
600 }
|
|
|
601
|
|
|
602 sc->offset += thissize;
|
|
|
603 if (alignsize < thissize)
|
|
|
604 alignsize = thissize;
|
|
|
605 }
|
|
|
606 structsize = sc->offset;
|
|
|
607 sizeok = 1;
|
|
|
608 Module::dprogress++;
|
|
|
609
|
|
|
610
|
|
|
611 sc->pop();
|
|
|
612
|
|
|
613 #if 0 // Do not call until toObjfile() because of forward references
|
|
|
614 // Fill in base class vtbl[]s
|
|
|
615 for (i = 0; i < vtblInterfaces->dim; i++)
|
|
|
616 {
|
|
|
617 BaseClass *b = (BaseClass *)vtblInterfaces->data[i];
|
|
|
618
|
|
|
619 //b->fillVtbl(this, &b->vtbl, 1);
|
|
|
620 }
|
|
|
621 #endif
|
|
|
622 //printf("-ClassDeclaration::semantic(%s), type = %p\n", toChars(), type);
|
|
|
623 }
|
|
|
624
|
|
|
625 void ClassDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
|
|
|
626 {
|
|
|
627 if (!isAnonymous())
|
|
|
628 {
|
|
|
629 buf->printf("%s ", kind());
|
|
|
630 buf->writestring(toChars());
|
|
|
631 if (baseclasses.dim)
|
|
|
632 buf->writestring(" : ");
|
|
|
633 }
|
|
|
634 for (int i = 0; i < baseclasses.dim; i++)
|
|
|
635 {
|
|
|
636 BaseClass *b = (BaseClass *)baseclasses.data[i];
|
|
|
637
|
|
|
638 if (i)
|
|
|
639 buf->writeByte(',');
|
|
|
640 //buf->writestring(b->base->ident->toChars());
|
|
|
641 b->type->toCBuffer(buf, NULL, hgs);
|
|
|
642 }
|
|
|
643 buf->writenl();
|
|
|
644 buf->writeByte('{');
|
|
|
645 buf->writenl();
|
|
|
646 for (int i = 0; i < members->dim; i++)
|
|
|
647 {
|
|
|
648 Dsymbol *s = (Dsymbol *)members->data[i];
|
|
|
649
|
|
|
650 buf->writestring(" ");
|
|
|
651 s->toCBuffer(buf, hgs);
|
|
|
652 }
|
|
|
653 buf->writestring("}");
|
|
|
654 buf->writenl();
|
|
|
655 }
|
|
|
656
|
|
|
657 #if 0
|
|
|
658 void ClassDeclaration::defineRef(Dsymbol *s)
|
|
|
659 {
|
|
|
660 ClassDeclaration *cd;
|
|
|
661
|
|
|
662 AggregateDeclaration::defineRef(s);
|
|
|
663 cd = s->isClassDeclaration();
|
|
|
664 baseType = cd->baseType;
|
|
|
665 cd->baseType = NULL;
|
|
|
666 }
|
|
|
667 #endif
|
|
|
668
|
|
|
669 /*********************************************
|
|
|
670 * Determine if 'this' is a base class of cd.
|
|
|
671 * This is used to detect circular inheritance only.
|
|
|
672 */
|
|
|
673
|
|
|
674 int ClassDeclaration::isBaseOf2(ClassDeclaration *cd)
|
|
|
675 {
|
|
|
676 if (!cd)
|
|
|
677 return 0;
|
|
|
678 //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd->toChars());
|
|
|
679 for (int i = 0; i < cd->baseclasses.dim; i++)
|
|
|
680 { BaseClass *b = (BaseClass *)cd->baseclasses.data[i];
|
|
|
681
|
|
|
682 if (b->base == this || isBaseOf2(b->base))
|
|
|
683 return 1;
|
|
|
684 }
|
|
|
685 return 0;
|
|
|
686 }
|
|
|
687
|
|
|
688 /*******************************************
|
|
|
689 * Determine if 'this' is a base class of cd.
|
|
|
690 */
|
|
|
691
|
|
|
692 int ClassDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset)
|
|
|
693 {
|
|
|
694 //printf("ClassDeclaration::isBaseOf(this = '%s', cd = '%s')\n", toChars(), cd->toChars());
|
|
|
695 if (poffset)
|
|
|
696 *poffset = 0;
|
|
|
697 while (cd)
|
|
|
698 {
|
|
|
699 if (this == cd->baseClass)
|
|
|
700 return 1;
|
|
|
701
|
|
|
702 /* cd->baseClass might not be set if cd is forward referenced.
|
|
|
703 */
|
|
|
704 if (!cd->baseClass && cd->baseclasses.dim && !cd->isInterfaceDeclaration())
|
|
|
705 {
|
|
|
706 cd->error("base class is forward referenced by %s", toChars());
|
|
|
707 }
|
|
|
708
|
|
|
709 cd = cd->baseClass;
|
|
|
710 }
|
|
|
711 return 0;
|
|
|
712 }
|
|
|
713
|
|
|
714 Dsymbol *ClassDeclaration::search(Loc loc, Identifier *ident, int flags)
|
|
|
715 {
|
|
|
716 Dsymbol *s;
|
|
|
717
|
|
|
718 //printf("%s.ClassDeclaration::search('%s')\n", toChars(), ident->toChars());
|
|
|
719 if (scope)
|
|
|
720 semantic(scope);
|
|
|
721
|
|
|
722 if (!members || !symtab || scope)
|
|
|
723 { error("is forward referenced when looking for '%s'", ident->toChars());
|
|
|
724 //*(char*)0=0;
|
|
|
725 return NULL;
|
|
|
726 }
|
|
|
727
|
|
|
728 s = ScopeDsymbol::search(loc, ident, flags);
|
|
|
729 if (!s)
|
|
|
730 {
|
|
|
731 // Search bases classes in depth-first, left to right order
|
|
|
732
|
|
|
733 int i;
|
|
|
734
|
|
|
735 for (i = 0; i < baseclasses.dim; i++)
|
|
|
736 {
|
|
|
737 BaseClass *b = (BaseClass *)baseclasses.data[i];
|
|
|
738
|
|
|
739 if (b->base)
|
|
|
740 {
|
|
|
741 if (!b->base->symtab)
|
|
|
742 error("base %s is forward referenced", b->base->ident->toChars());
|
|
|
743 else
|
|
|
744 {
|
|
|
745 s = b->base->search(loc, ident, flags);
|
|
|
746 if (s == this) // happens if s is nested in this and derives from this
|
|
|
747 s = NULL;
|
|
|
748 else if (s)
|
|
|
749 break;
|
|
|
750 }
|
|
|
751 }
|
|
|
752 }
|
|
|
753 }
|
|
|
754 return s;
|
|
|
755 }
|
|
|
756
|
|
|
757 /****************
|
|
|
758 * Find virtual function matching identifier and type.
|
|
|
759 * Used to build virtual function tables for interface implementations.
|
|
|
760 */
|
|
|
761
|
|
|
762 FuncDeclaration *ClassDeclaration::findFunc(Identifier *ident, TypeFunction *tf)
|
|
|
763 {
|
|
|
764 //printf("ClassDeclaration::findFunc(%s, %s) %s\n", ident->toChars(), tf->toChars(), toChars());
|
|
|
765
|
|
|
766 ClassDeclaration *cd = this;
|
|
|
767 Array *vtbl = &cd->vtbl;
|
|
|
768 while (1)
|
|
|
769 {
|
|
|
770 for (size_t i = 0; i < vtbl->dim; i++)
|
|
|
771 {
|
|
|
772 FuncDeclaration *fd = (FuncDeclaration *)vtbl->data[i];
|
|
|
773
|
|
|
774 //printf("\t[%d] = %s\n", i, fd->toChars());
|
|
|
775 if (ident == fd->ident &&
|
|
|
776 //tf->equals(fd->type)
|
|
|
777 fd->type->covariant(tf) == 1
|
|
|
778 )
|
|
|
779 { //printf("\t\tfound\n");
|
|
|
780 return fd;
|
|
|
781 }
|
|
|
782 //else printf("\t\t%d\n", fd->type->covariant(tf));
|
|
|
783 }
|
|
|
784 if (!cd)
|
|
|
785 break;
|
|
|
786 vtbl = &cd->vtblFinal;
|
|
|
787 cd = cd->baseClass;
|
|
|
788 }
|
|
|
789
|
|
|
790 return NULL;
|
|
|
791 }
|
|
|
792
|
|
|
793 void ClassDeclaration::interfaceSemantic(Scope *sc)
|
|
|
794 { int i;
|
|
|
795
|
|
|
796 vtblInterfaces = new BaseClasses();
|
|
|
797 vtblInterfaces->reserve(interfaces_dim);
|
|
|
798
|
|
|
799 for (i = 0; i < interfaces_dim; i++)
|
|
|
800 {
|
|
|
801 BaseClass *b = interfaces[i];
|
|
|
802
|
|
|
803 // If this is an interface, and it derives from a COM interface,
|
|
|
804 // then this is a COM interface too.
|
|
|
805 if (b->base->isCOMclass())
|
|
|
806 com = 1;
|
|
|
807
|
|
|
808 vtblInterfaces->push(b);
|
|
|
809 b->copyBaseInterfaces(vtblInterfaces);
|
|
|
810 }
|
|
|
811 }
|
|
|
812
|
|
|
813 /****************************************
|
|
|
814 */
|
|
|
815
|
|
|
816 int ClassDeclaration::isCOMclass()
|
|
|
817 {
|
|
|
818 return com;
|
|
|
819 }
|
|
|
820
|
|
|
821
|
|
|
822 /****************************************
|
|
|
823 */
|
|
|
824
|
|
|
825 int ClassDeclaration::isAbstract()
|
|
|
826 {
|
|
|
827 if (isabstract)
|
|
|
828 return TRUE;
|
|
|
829 for (int i = 1; i < vtbl.dim; i++)
|
|
|
830 {
|
|
|
831 FuncDeclaration *fd = ((Dsymbol *)vtbl.data[i])->isFuncDeclaration();
|
|
|
832
|
|
|
833 //printf("\tvtbl[%d] = %p\n", i, fd);
|
|
|
834 if (!fd || fd->isAbstract())
|
|
|
835 {
|
|
|
836 isabstract |= 1;
|
|
|
837 return TRUE;
|
|
|
838 }
|
|
|
839 }
|
|
|
840 return FALSE;
|
|
|
841 }
|
|
|
842
|
|
|
843 /****************************************
|
|
|
844 * Returns !=0 if there's an extra member which is the 'this'
|
|
|
845 * pointer to the enclosing context (enclosing class or function)
|
|
|
846 */
|
|
|
847
|
|
|
848 int ClassDeclaration::isNested()
|
|
|
849 {
|
|
|
850 return isnested;
|
|
|
851 }
|
|
|
852
|
|
|
853 /****************************************
|
|
|
854 * Determine if slot 0 of the vtbl[] is reserved for something else.
|
|
|
855 * For class objects, yes, this is where the classinfo ptr goes.
|
|
|
856 * For COM interfaces, no.
|
|
|
857 * For non-COM interfaces, yes, this is where the Interface ptr goes.
|
|
|
858 */
|
|
|
859
|
|
|
860 int ClassDeclaration::vtblOffset()
|
|
|
861 {
|
|
|
862 return 1;
|
|
|
863 }
|
|
|
864
|
|
|
865 /****************************************
|
|
|
866 */
|
|
|
867
|
|
|
868 char *ClassDeclaration::kind()
|
|
|
869 {
|
|
|
870 return "class";
|
|
|
871 }
|
|
|
872
|
|
|
873 /****************************************
|
|
|
874 */
|
|
|
875
|
|
|
876 void ClassDeclaration::addLocalClass(ClassDeclarations *aclasses)
|
|
|
877 {
|
|
|
878 aclasses->push(this);
|
|
|
879 }
|
|
|
880
|
|
|
881 /********************************* InterfaceDeclaration ****************************/
|
|
|
882
|
|
|
883 InterfaceDeclaration::InterfaceDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses)
|
|
|
884 : ClassDeclaration(loc, id, baseclasses)
|
|
|
885 {
|
|
|
886 com = 0;
|
|
|
887 if (id == Id::IUnknown) // IUnknown is the root of all COM objects
|
|
|
888 com = 1;
|
|
|
889 }
|
|
|
890
|
|
|
891 Dsymbol *InterfaceDeclaration::syntaxCopy(Dsymbol *s)
|
|
|
892 {
|
|
|
893 InterfaceDeclaration *id;
|
|
|
894
|
|
|
895 if (s)
|
|
|
896 id = (InterfaceDeclaration *)s;
|
|
|
897 else
|
|
|
898 id = new InterfaceDeclaration(loc, ident, NULL);
|
|
|
899
|
|
|
900 ClassDeclaration::syntaxCopy(id);
|
|
|
901 return id;
|
|
|
902 }
|
|
|
903
|
|
|
904 void InterfaceDeclaration::semantic(Scope *sc)
|
|
|
905 { int i;
|
|
|
906
|
|
|
907 //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);
|
|
|
908 if (!scope)
|
|
|
909 { type = type->semantic(loc, sc);
|
|
|
910 handle = handle->semantic(loc, sc);
|
|
|
911 }
|
|
|
912 if (!members) // if forward reference
|
|
|
913 { //printf("\tinterface '%s' is forward referenced\n", toChars());
|
|
|
914 return;
|
|
|
915 }
|
|
|
916 if (symtab) // if already done
|
|
|
917 { if (!scope)
|
|
|
918 return;
|
|
|
919 }
|
|
|
920 else
|
|
|
921 symtab = new DsymbolTable();
|
|
|
922
|
|
|
923 Scope *scx = NULL;
|
|
|
924 if (scope)
|
|
|
925 { sc = scope;
|
|
|
926 scx = scope; // save so we don't make redundant copies
|
|
|
927 scope = NULL;
|
|
|
928 }
|
|
|
929
|
|
|
930 // Expand any tuples in baseclasses[]
|
|
|
931 for (i = 0; i < baseclasses.dim; )
|
|
|
932 { BaseClass *b = (BaseClass *)baseclasses.data[0];
|
|
|
933 b->type = b->type->semantic(loc, sc);
|
|
|
934 Type *tb = b->type->toBasetype();
|
|
|
935
|
|
|
936 if (tb->ty == Ttuple)
|
|
|
937 { TypeTuple *tup = (TypeTuple *)tb;
|
|
|
938 enum PROT protection = b->protection;
|
|
|
939 baseclasses.remove(i);
|
|
|
940 size_t dim = Argument::dim(tup->arguments);
|
|
|
941 for (size_t j = 0; j < dim; j++)
|
|
|
942 { Argument *arg = Argument::getNth(tup->arguments, j);
|
|
|
943 b = new BaseClass(arg->type, protection);
|
|
|
944 baseclasses.insert(i + j, b);
|
|
|
945 }
|
|
|
946 }
|
|
|
947 else
|
|
|
948 i++;
|
|
|
949 }
|
|
|
950
|
|
|
951 // Check for errors, handle forward references
|
|
|
952 for (i = 0; i < baseclasses.dim; )
|
|
|
953 { TypeClass *tc;
|
|
|
954 BaseClass *b;
|
|
|
955 Type *tb;
|
|
|
956
|
|
|
957 b = (BaseClass *)baseclasses.data[i];
|
|
|
958 b->type = b->type->semantic(loc, sc);
|
|
|
959 tb = b->type->toBasetype();
|
|
|
960 if (tb->ty == Tclass)
|
|
|
961 tc = (TypeClass *)tb;
|
|
|
962 else
|
|
|
963 tc = NULL;
|
|
|
964 if (!tc || !tc->sym->isInterfaceDeclaration())
|
|
|
965 {
|
|
|
966 error("base type must be interface, not %s", b->type->toChars());
|
|
|
967 baseclasses.remove(i);
|
|
|
968 continue;
|
|
|
969 }
|
|
|
970 else
|
|
|
971 {
|
|
|
972 // Check for duplicate interfaces
|
|
|
973 for (size_t j = 0; j < i; j++)
|
|
|
974 {
|
|
|
975 BaseClass *b2 = (BaseClass *)baseclasses.data[j];
|
|
|
976 if (b2->base == tc->sym)
|
|
|
977 error("inherits from duplicate interface %s", b2->base->toChars());
|
|
|
978 }
|
|
|
979
|
|
|
980 b->base = tc->sym;
|
|
|
981 if (b->base == this || isBaseOf2(b->base))
|
|
|
982 {
|
|
|
983 error("circular inheritance of interface");
|
|
|
984 baseclasses.remove(i);
|
|
|
985 continue;
|
|
|
986 }
|
|
|
987 if (!b->base->symtab || b->base->scope)
|
|
|
988 {
|
|
|
989 //error("forward reference of base class %s", baseClass->toChars());
|
|
|
990 // Forward reference of base, try again later
|
|
|
991 //printf("\ttry later, forward reference of base %s\n", b->base->toChars());
|
|
|
992 scope = scx ? scx : new Scope(*sc);
|
|
|
993 scope->setNoFree();
|
|
|
994 scope->module->addDeferredSemantic(this);
|
|
|
995 return;
|
|
|
996 }
|
|
|
997 }
|
|
|
998 i++;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 interfaces_dim = baseclasses.dim;
|
|
|
1002 interfaces = (BaseClass **)baseclasses.data;
|
|
|
1003
|
|
|
1004 interfaceSemantic(sc);
|
|
|
1005
|
|
|
1006 if (vtblOffset())
|
|
|
1007 vtbl.push(this); // leave room at vtbl[0] for classinfo
|
|
|
1008
|
|
|
1009 // Cat together the vtbl[]'s from base interfaces
|
|
|
1010 for (i = 0; i < interfaces_dim; i++)
|
|
|
1011 { BaseClass *b = interfaces[i];
|
|
|
1012
|
|
|
1013 // Skip if b has already appeared
|
|
|
1014 for (int k = 0; k < i; k++)
|
|
|
1015 {
|
|
|
1016 if (b == interfaces[i])
|
|
|
1017 goto Lcontinue;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 // Copy vtbl[] from base class
|
|
|
1021 if (b->base->vtblOffset())
|
|
|
1022 { int d = b->base->vtbl.dim;
|
|
|
1023 if (d > 1)
|
|
|
1024 {
|
|
|
1025 vtbl.reserve(d - 1);
|
|
|
1026 for (int j = 1; j < d; j++)
|
|
|
1027 vtbl.push(b->base->vtbl.data[j]);
|
|
|
1028 }
|
|
|
1029 }
|
|
|
1030 else
|
|
|
1031 {
|
|
|
1032 vtbl.append(&b->base->vtbl);
|
|
|
1033 }
|
|
|
1034
|
|
|
1035 Lcontinue:
|
|
|
1036 ;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 for (i = 0; i < members->dim; i++)
|
|
|
1040 {
|
|
|
1041 Dsymbol *s = (Dsymbol *)members->data[i];
|
|
|
1042 s->addMember(sc, this, 1);
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 sc = sc->push(this);
|
|
|
1046 sc->parent = this;
|
|
|
1047 if (isCOMclass())
|
|
|
1048 sc->linkage = LINKwindows;
|
|
|
1049 sc->structalign = 8;
|
|
|
1050 structalign = sc->structalign;
|
|
|
1051 sc->offset = 8;
|
|
|
1052 for (i = 0; i < members->dim; i++)
|
|
|
1053 {
|
|
|
1054 Dsymbol *s = (Dsymbol *)members->data[i];
|
|
|
1055 s->semantic(sc);
|
|
|
1056 }
|
|
|
1057 //members->print();
|
|
|
1058 sc->pop();
|
|
|
1059 //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);
|
|
|
1060 }
|
|
|
1061
|
|
|
1062
|
|
|
1063 /*******************************************
|
|
|
1064 * Determine if 'this' is a base class of cd.
|
|
|
1065 * (Actually, if it is an interface supported by cd)
|
|
|
1066 * Output:
|
|
|
1067 * *poffset offset to start of class
|
|
|
1068 * OFFSET_RUNTIME must determine offset at runtime
|
|
|
1069 * Returns:
|
|
|
1070 * 0 not a base
|
|
|
1071 * 1 is a base
|
|
|
1072 */
|
|
|
1073
|
|
|
1074 int InterfaceDeclaration::isBaseOf(ClassDeclaration *cd, int *poffset)
|
|
|
1075 {
|
|
|
1076 unsigned j;
|
|
|
1077
|
|
|
1078 //printf("%s.InterfaceDeclaration::isBaseOf(cd = '%s')\n", toChars(), cd->toChars());
|
|
|
1079 assert(!baseClass);
|
|
|
1080 for (j = 0; j < cd->interfaces_dim; j++)
|
|
|
1081 {
|
|
|
1082 BaseClass *b = cd->interfaces[j];
|
|
|
1083
|
|
|
1084 //printf("\tbase %s\n", b->base->toChars());
|
|
|
1085 if (this == b->base)
|
|
|
1086 {
|
|
|
1087 //printf("\tfound at offset %d\n", b->offset);
|
|
|
1088 if (poffset)
|
|
|
1089 { *poffset = b->offset;
|
|
|
1090 if (j && cd->isInterfaceDeclaration())
|
|
|
1091 *poffset = OFFSET_RUNTIME;
|
|
|
1092 }
|
|
|
1093 return 1;
|
|
|
1094 }
|
|
|
1095 if (isBaseOf(b, poffset))
|
|
|
1096 { if (j && poffset && cd->isInterfaceDeclaration())
|
|
|
1097 *poffset = OFFSET_RUNTIME;
|
|
|
1098 return 1;
|
|
|
1099 }
|
|
|
1100 }
|
|
|
1101
|
|
|
1102 if (cd->baseClass && isBaseOf(cd->baseClass, poffset))
|
|
|
1103 return 1;
|
|
|
1104
|
|
|
1105 if (poffset)
|
|
|
1106 *poffset = 0;
|
|
|
1107 return 0;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110
|
|
|
1111 int InterfaceDeclaration::isBaseOf(BaseClass *bc, int *poffset)
|
|
|
1112 {
|
|
|
1113 //printf("%s.InterfaceDeclaration::isBaseOf(bc = '%s')\n", toChars(), bc->base->toChars());
|
|
|
1114 for (unsigned j = 0; j < bc->baseInterfaces_dim; j++)
|
|
|
1115 {
|
|
|
1116 BaseClass *b = &bc->baseInterfaces[j];
|
|
|
1117
|
|
|
1118 if (this == b->base)
|
|
|
1119 {
|
|
|
1120 if (poffset)
|
|
|
1121 { *poffset = b->offset;
|
|
|
1122 }
|
|
|
1123 return 1;
|
|
|
1124 }
|
|
|
1125 if (isBaseOf(b, poffset))
|
|
|
1126 {
|
|
|
1127 return 1;
|
|
|
1128 }
|
|
|
1129 }
|
|
|
1130 if (poffset)
|
|
|
1131 *poffset = 0;
|
|
|
1132 return 0;
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 /****************************************
|
|
|
1136 * Determine if slot 0 of the vtbl[] is reserved for something else.
|
|
|
1137 * For class objects, yes, this is where the classinfo ptr goes.
|
|
|
1138 * For COM interfaces, no.
|
|
|
1139 * For non-COM interfaces, yes, this is where the Interface ptr goes.
|
|
|
1140 */
|
|
|
1141
|
|
|
1142 int InterfaceDeclaration::vtblOffset()
|
|
|
1143 {
|
|
|
1144 if (isCOMclass())
|
|
|
1145 return 0;
|
|
|
1146 return 1;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 /*******************************************
|
|
|
1150 */
|
|
|
1151
|
|
|
1152 char *InterfaceDeclaration::kind()
|
|
|
1153 {
|
|
|
1154 return "interface";
|
|
|
1155 }
|
|
|
1156
|
|
|
1157
|
|
|
1158 /******************************** BaseClass *****************************/
|
|
|
1159
|
|
|
1160 BaseClass::BaseClass()
|
|
|
1161 {
|
|
|
1162 memset(this, 0, sizeof(BaseClass));
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 BaseClass::BaseClass(Type *type, enum PROT protection)
|
|
|
1166 {
|
|
|
1167 //printf("BaseClass(this = %p, '%s')\n", this, type->toChars());
|
|
|
1168 this->type = type;
|
|
|
1169 this->protection = protection;
|
|
|
1170 base = NULL;
|
|
|
1171 offset = 0;
|
|
|
1172
|
|
|
1173 baseInterfaces_dim = 0;
|
|
|
1174 baseInterfaces = NULL;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 /****************************************
|
|
|
1178 * Fill in vtbl[] for base class based on member functions of class cd.
|
|
|
1179 * Input:
|
|
|
1180 * vtbl if !=NULL, fill it in
|
|
|
1181 * newinstance !=0 means all entries must be filled in by members
|
|
|
1182 * of cd, not members of any base classes of cd.
|
|
|
1183 * Returns:
|
|
|
1184 * !=0 if any entries were filled in by members of cd (not exclusively
|
|
|
1185 * by base classes)
|
|
|
1186 */
|
|
|
1187
|
|
|
1188 int BaseClass::fillVtbl(ClassDeclaration *cd, Array *vtbl, int newinstance)
|
|
|
1189 {
|
|
|
1190 ClassDeclaration *id = base;
|
|
|
1191 int j;
|
|
|
1192 int result = 0;
|
|
|
1193
|
|
|
1194 //printf("BaseClass::fillVtbl(this='%s', cd='%s')\n", base->toChars(), cd->toChars());
|
|
|
1195 if (vtbl)
|
|
|
1196 vtbl->setDim(base->vtbl.dim);
|
|
|
1197
|
|
|
1198 // first entry is ClassInfo reference
|
|
|
1199 for (j = base->vtblOffset(); j < base->vtbl.dim; j++)
|
|
|
1200 {
|
|
|
1201 FuncDeclaration *ifd = ((Dsymbol *)base->vtbl.data[j])->isFuncDeclaration();
|
|
|
1202 FuncDeclaration *fd;
|
|
|
1203 TypeFunction *tf;
|
|
|
1204
|
|
|
1205 //printf(" vtbl[%d] is '%s'\n", j, ifd ? ifd->toChars() : "null");
|
|
|
1206
|
|
|
1207 assert(ifd);
|
|
|
1208 // Find corresponding function in this class
|
|
|
1209 tf = (ifd->type->ty == Tfunction) ? (TypeFunction *)(ifd->type) : NULL;
|
|
|
1210 fd = cd->findFunc(ifd->ident, tf);
|
|
|
1211 if (fd && !fd->isAbstract())
|
|
|
1212 {
|
|
|
1213 //printf(" found\n");
|
|
|
1214 // Check that calling conventions match
|
|
|
1215 if (fd->linkage != ifd->linkage)
|
|
|
1216 fd->error("linkage doesn't match interface function");
|
|
|
1217
|
|
|
1218 // Check that it is current
|
|
|
1219 if (newinstance &&
|
|
|
1220 fd->toParent() != cd &&
|
|
|
1221 ifd->toParent() == base)
|
|
|
1222 cd->error("interface function %s.%s is not implemented",
|
|
|
1223 id->toChars(), ifd->ident->toChars());
|
|
|
1224
|
|
|
1225 if (fd->toParent() == cd)
|
|
|
1226 result = 1;
|
|
|
1227 }
|
|
|
1228 else
|
|
|
1229 {
|
|
|
1230 //printf(" not found\n");
|
|
|
1231 // BUG: should mark this class as abstract?
|
|
|
1232 if (!cd->isAbstract())
|
|
|
1233 cd->error("interface function %s.%s isn't implemented",
|
|
|
1234 id->toChars(), ifd->ident->toChars());
|
|
|
1235 fd = NULL;
|
|
|
1236 }
|
|
|
1237 if (vtbl)
|
|
|
1238 vtbl->data[j] = fd;
|
|
|
1239 }
|
|
|
1240
|
|
|
1241 return result;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 void BaseClass::copyBaseInterfaces(BaseClasses *vtblInterfaces)
|
|
|
1245 {
|
|
|
1246 //printf("+copyBaseInterfaces(), %s\n", base->toChars());
|
|
|
1247 // if (baseInterfaces_dim)
|
|
|
1248 // return;
|
|
|
1249
|
|
|
1250 baseInterfaces_dim = base->interfaces_dim;
|
|
|
1251 baseInterfaces = (BaseClass *)mem.calloc(baseInterfaces_dim, sizeof(BaseClass));
|
|
|
1252
|
|
|
1253 //printf("%s.copyBaseInterfaces()\n", base->toChars());
|
|
|
1254 for (int i = 0; i < baseInterfaces_dim; i++)
|
|
|
1255 {
|
|
|
1256 BaseClass *b = &baseInterfaces[i];
|
|
|
1257 BaseClass *b2 = base->interfaces[i];
|
|
|
1258
|
|
|
1259 assert(b2->vtbl.dim == 0); // should not be filled yet
|
|
|
1260 memcpy(b, b2, sizeof(BaseClass));
|
|
|
1261
|
|
|
1262 if (i) // single inheritance is i==0
|
|
|
1263 vtblInterfaces->push(b); // only need for M.I.
|
|
|
1264 b->copyBaseInterfaces(vtblInterfaces);
|
|
|
1265 }
|
|
|
1266 //printf("-copyBaseInterfaces\n");
|
|
|
1267 }
|
