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1
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2 // Compiler implementation of the D programming language
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3 // Copyright (c) 1999-2008 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 #ifndef DMD_AGGREGATE_H
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12 #define DMD_AGGREGATE_H
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13
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14 #ifdef __DMC__
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15 #pragma once
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16 #endif /* __DMC__ */
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17
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18 #include "root.h"
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19 #include "dsymbol.h"
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20
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21 #include <vector>
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22 #include <set>
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23 #include <map>
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24
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25 struct Identifier;
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26 struct Type;
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27 struct TypeFunction;
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28 struct Expression;
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29 struct FuncDeclaration;
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30 struct CtorDeclaration;
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31 struct DtorDeclaration;
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32 struct InvariantDeclaration;
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33 struct NewDeclaration;
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34 struct DeleteDeclaration;
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35 struct InterfaceDeclaration;
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36 struct ClassInfoDeclaration;
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37 struct VarDeclaration;
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38 struct dt_t;
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39
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40 namespace llvm
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41 {
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42 class Type;
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43 class Value;
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44 class Constant;
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45 class ConstantStruct;
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46 class GlobalVariable;
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47 }
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48 struct DUnion;
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49
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50 struct AggregateDeclaration : ScopeDsymbol
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51 {
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52 Type *type;
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53 unsigned storage_class;
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54 enum PROT protection;
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55 Type *handle; // 'this' type
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56 unsigned structsize; // size of struct
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57 unsigned alignsize; // size of struct for alignment purposes
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58 unsigned structalign; // struct member alignment in effect
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59 int hasUnions; // set if aggregate has overlapping fields
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60 Array fields; // VarDeclaration fields
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61 unsigned sizeok; // set when structsize contains valid data
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62 // 0: no size
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63 // 1: size is correct
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64 // 2: cannot determine size; fwd referenced
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65 int isdeprecated; // !=0 if deprecated
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66 Scope *scope; // !=NULL means context to use
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67 FuncDeclarations dtors; // Array of destructors
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68 FuncDeclaration *dtor; // aggregate destructor
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69
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70 // Special member functions
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71 InvariantDeclaration *inv; // invariant
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72 NewDeclaration *aggNew; // allocator
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73 DeleteDeclaration *aggDelete; // deallocator
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74
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75 #ifdef IN_GCC
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76 Array methods; // flat list of all methods for debug information
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77 #endif
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78
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79 AggregateDeclaration(Loc loc, Identifier *id);
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80 void semantic2(Scope *sc);
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81 void semantic3(Scope *sc);
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82 void inlineScan();
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83 unsigned size(Loc loc);
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84 static void alignmember(unsigned salign, unsigned size, unsigned *poffset);
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85 Type *getType();
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86 void addField(Scope *sc, VarDeclaration *v);
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87 int isDeprecated(); // is aggregate deprecated?
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88 FuncDeclaration *buildDtor(Scope *sc);
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89
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90 void emitComment(Scope *sc);
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91 void toDocBuffer(OutBuffer *buf);
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92
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93 // For access checking
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94 virtual PROT getAccess(Dsymbol *smember); // determine access to smember
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95 int isFriendOf(AggregateDeclaration *cd);
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96 int hasPrivateAccess(Dsymbol *smember); // does smember have private access to members of this class?
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97 void accessCheck(Loc loc, Scope *sc, Dsymbol *smember);
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98
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99 enum PROT prot();
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100
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101 // Back end
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102 Symbol *stag; // tag symbol for debug data
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103 Symbol *sinit;
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104 Symbol *toInitializer();
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105
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106 AggregateDeclaration *isAggregateDeclaration() { return this; }
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107 };
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108
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109 struct AnonymousAggregateDeclaration : AggregateDeclaration
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110 {
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111 AnonymousAggregateDeclaration()
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112 : AggregateDeclaration(0, NULL)
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113 {
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114 }
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115
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116 AnonymousAggregateDeclaration *isAnonymousAggregateDeclaration() { return this; }
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117 };
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118
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119 struct StructDeclaration : AggregateDeclaration
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120 {
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121 int zeroInit; // !=0 if initialize with 0 fill
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122
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123 StructDeclaration(Loc loc, Identifier *id);
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124 Dsymbol *syntaxCopy(Dsymbol *s);
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125 void semantic(Scope *sc);
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126 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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127 char *mangle();
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128 char *kind();
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129 Expression *cloneMembers();
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130 void toDocBuffer(OutBuffer *buf);
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131
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132 PROT getAccess(Dsymbol *smember); // determine access to smember
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133
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134 void toObjFile(); // compile to .obj file
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135 void toDt(dt_t **pdt);
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136 void toDebug(); // to symbolic debug info
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137
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138 StructDeclaration *isStructDeclaration() { return this; }
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139 };
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140
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141 struct UnionDeclaration : StructDeclaration
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142 {
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143 UnionDeclaration(Loc loc, Identifier *id);
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144 Dsymbol *syntaxCopy(Dsymbol *s);
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145 char *kind();
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146
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147 UnionDeclaration *isUnionDeclaration() { return this; }
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148 };
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149
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150 struct BaseClass
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151 {
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152 Type *type; // (before semantic processing)
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153 enum PROT protection; // protection for the base interface
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154
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155 ClassDeclaration *base;
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156 int offset; // 'this' pointer offset
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157 Array vtbl; // for interfaces: Array of FuncDeclaration's
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158 // making up the vtbl[]
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159
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160 int baseInterfaces_dim;
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161 BaseClass *baseInterfaces; // if BaseClass is an interface, these
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162 // are a copy of the InterfaceDeclaration::interfaces
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163
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164 BaseClass();
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165 BaseClass(Type *type, enum PROT protection);
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166
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167 int fillVtbl(ClassDeclaration *cd, Array *vtbl, int newinstance);
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168 void copyBaseInterfaces(BaseClasses *);
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169 };
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170
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171 #if V2
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172 #define CLASSINFO_SIZE (0x3C+16) // value of ClassInfo.size
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173 #else
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174 #define CLASSINFO_SIZE (0x3C+12) // value of ClassInfo.size
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175 #endif
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176
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177 struct ClassDeclaration : AggregateDeclaration
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178 {
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179 static ClassDeclaration *object;
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180 static ClassDeclaration *classinfo;
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181
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182 ClassDeclaration *baseClass; // NULL only if this is Object
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183 CtorDeclaration *ctor;
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184 CtorDeclaration *defaultCtor; // default constructor
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185 FuncDeclaration *staticCtor;
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186 FuncDeclaration *staticDtor;
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187 Array vtbl; // Array of FuncDeclaration's making up the vtbl[]
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188 Array vtblFinal; // More FuncDeclaration's that aren't in vtbl[]
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189
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190 BaseClasses baseclasses; // Array of BaseClass's; first is super,
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191 // rest are Interface's
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192
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193 int interfaces_dim;
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194 BaseClass **interfaces; // interfaces[interfaces_dim] for this class
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195 // (does not include baseClass)
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196
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197 BaseClasses *vtblInterfaces; // array of base interfaces that have
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198 // their own vtbl[]
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199
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200 ClassInfoDeclaration *vclassinfo; // the ClassInfo object for this ClassDeclaration
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201 int com; // !=0 if this is a COM class (meaning
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202 // it derives from IUnknown)
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203 int isauto; // !=0 if this is an auto class
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204 int isabstract; // !=0 if abstract class
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205
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206 int isnested; // !=0 if is nested
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207 VarDeclaration *vthis; // 'this' parameter if this class is nested
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208
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209 int inuse; // to prevent recursive attempts
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210
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211 ClassDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses);
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212 Dsymbol *syntaxCopy(Dsymbol *s);
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213 void semantic(Scope *sc);
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214 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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215 int isBaseOf2(ClassDeclaration *cd);
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216
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217 #define OFFSET_RUNTIME 0x76543210
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218 virtual int isBaseOf(ClassDeclaration *cd, int *poffset);
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219
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220 Dsymbol *search(Loc, Identifier *ident, int flags);
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221 #if V2
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222 int isFuncHidden(FuncDeclaration *fd);
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223 #endif
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224 FuncDeclaration *findFunc(Identifier *ident, TypeFunction *tf);
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225 void interfaceSemantic(Scope *sc);
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226 int isNested();
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227 int isCOMclass();
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228 virtual int isCOMinterface();
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229 #if V2
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230 virtual int isCPPinterface();
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231 #endif
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232 int isAbstract();
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233 virtual int vtblOffset();
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234 char *kind();
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235 char *mangle();
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236 void toDocBuffer(OutBuffer *buf);
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237
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238 PROT getAccess(Dsymbol *smember); // determine access to smember
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239
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240 void addLocalClass(ClassDeclarations *);
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241
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242 // Back end
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243 void toObjFile(); // compile to .obj file
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244 void toDebug();
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245 unsigned baseVtblOffset(BaseClass *bc);
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246 Symbol *toSymbol();
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247 Symbol *toVtblSymbol();
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248 void toDt(dt_t **pdt);
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249 void toDt2(dt_t **pdt, ClassDeclaration *cd);
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250
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251 Symbol *vtblsym;
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252
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253 // llvm
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254 void offsetToIndex(Type* t, unsigned os, std::vector<unsigned>& result);
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255
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256 ClassDeclaration *isClassDeclaration() { return (ClassDeclaration *)this; }
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257 };
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258
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259 struct InterfaceDeclaration : ClassDeclaration
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260 {
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261 #if V2
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262 int cpp; // !=0 if this is a C++ interface
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263 #endif
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264 InterfaceDeclaration(Loc loc, Identifier *id, BaseClasses *baseclasses);
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265 Dsymbol *syntaxCopy(Dsymbol *s);
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266 void semantic(Scope *sc);
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267 int isBaseOf(ClassDeclaration *cd, int *poffset);
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268 int isBaseOf(BaseClass *bc, int *poffset);
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269 char *kind();
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270 int vtblOffset();
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271 #if V2
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272 int isCPPinterface();
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273 #endif
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274 virtual int isCOMinterface();
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275
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276 void toObjFile(); // compile to .obj file
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277 Symbol *toSymbol();
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278
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279 InterfaceDeclaration *isInterfaceDeclaration() { return this; }
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280 };
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281
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282 #endif /* DMD_AGGREGATE_H */
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