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