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Completed interface implementation. Hopefully that's it for now..
author Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
date Thu, 16 Apr 2009 13:18:56 +0200
parents 79758fd2f48a
children 752bed475b75
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1 #ifndef LDC_IR_IRSTRUCT_H
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2 #define LDC_IR_IRSTRUCT_H
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3
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4 #include "ir/ir.h"
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5
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6 #include <vector>
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7 #include <map>
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8
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9 // DMD forward declarations
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10 struct StructInitializer;
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11
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12 //////////////////////////////////////////////////////////////////////////////
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13
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14 // represents a struct or class
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15 // it is used during codegen to hold all the vital info we need
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16 struct IrStruct : IrBase
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17 {
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18 /// Constructor.
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19 IrStruct(AggregateDeclaration* agg);
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20
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21 //////////////////////////////////////////////////////////////////////////
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22 // public fields,
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23 // FIXME this is basically stuff I just haven't gotten around to yet.
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24
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25 /// The D aggregate.
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26 AggregateDeclaration* aggrdecl;
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27
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28 /// Aggregate D type.
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29 Type* type;
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30
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31 /// true only for: align(1) struct S { ... }
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32 bool packed;
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33
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34 /// Composite type debug description.
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35 llvm::DICompositeType diCompositeType;
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36
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37 //////////////////////////////////////////////////////////////////////////
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38
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39 /// Create the __initZ symbol lazily.
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40 LLGlobalVariable* getInitSymbol();
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41 /// Builds the __initZ initializer constant lazily.
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42 LLConstant* getDefaultInit();
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43
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44 /// Create the __vtblZ symbol lazily.
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45 LLGlobalVariable* getVtblSymbol();
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46 /// Builds the __vtblZ initializer constant lazily.
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47 LLConstant* getVtblInit();
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48
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49 /// Create the __ClassZ symbol lazily.
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50 LLGlobalVariable* getClassInfoSymbol();
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51 /// Builds the __ClassZ initializer constant lazily.
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52 LLConstant* getClassInfoInit();
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53
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54 /// Create the __interfaceInfos symbol lazily.
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55 LLGlobalVariable* getInterfaceArraySymbol();
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56
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57 /// Creates a StructInitializer constant.
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58 LLConstant* createStructInitializer(StructInitializer* si);
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59
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60 //////////////////////////////////////////////////////////////////////////
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61 protected:
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62 /// Static default initializer global.
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63 llvm::GlobalVariable* init;
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64 /// Static default initializer constant.
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65 LLConstant* constInit;
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66
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67 /// Vtbl global.
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68 llvm::GlobalVariable* vtbl;
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69 /// Vtbl initializer constant.
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70 LLConstant* constVtbl;
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71
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72 /// ClassInfo global.
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73 llvm::GlobalVariable* classInfo;
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74 /// ClassInfo initializer constant.
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75 LLConstant* constClassInfo;
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76
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77 /// Map for mapping ClassDeclaration* to LLVM GlobalVariable.
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78 typedef std::map<ClassDeclaration*, llvm::GlobalVariable*> ClassGlobalMap;
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79
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80 /// Map from of interface vtbls implemented by this class.
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81 ClassGlobalMap interfaceVtblMap;
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82
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83 /// Interface info array global.
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84 /// Basically: static object.Interface[num_interfaces]
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85 llvm::GlobalVariable* classInterfacesArray;
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86
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87 /// std::vector of BaseClass*
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88 typedef std::vector<BaseClass*> BaseClassVector;
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89
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90 /// Array of all interface vtbl implementations - in order - implemented
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91 /// by this class.
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92 /// Corresponds to the Interface instances needed to be output.
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93 BaseClassVector interfacesWithVtbls;
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94
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95 //////////////////////////////////////////////////////////////////////////
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96
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97 /// Create static default initializer for struct.
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98 LLConstant* createStructDefaultInitializer();
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99
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100 /// Create static default initializer for class.
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101 LLConstant* createClassDefaultInitializer();
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102
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103 /// Returns vtbl for interface implementation, creates it if not already built.
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104 llvm::GlobalVariable* getInterfaceVtbl(
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105 BaseClass* b,
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106 bool new_inst,
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107 size_t interfaces_index);
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108
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109 /// Add base class data to initializer list.
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110 /// Also creates the IrField instance for each data field.
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111 void addBaseClassInits(
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112 std::vector<llvm::Constant*>& constants,
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113 ClassDeclaration* base,
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114 size_t& offset,
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115 size_t& field_index);
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116
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117 // FIXME make this a member instead
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118 friend LLConstant* DtoDefineClassInfo(ClassDeclaration* cd);
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119
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120 /// Create the Interface[] interfaces ClassInfo field initializer.
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121 LLConstant* getClassInfoInterfaces();
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122 };
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123
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124 //////////////////////////////////////////////////////////////////////////////
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125
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126 #endif