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#ifndef LDC_IR_IRSTRUCT_H
#define LDC_IR_IRSTRUCT_H
#include "ir/ir.h"
#include <vector>
#include <map>
// DMD forward declarations
struct StructInitializer;
//////////////////////////////////////////////////////////////////////////////
// represents a struct or class
// it is used during codegen to hold all the vital info we need
struct IrStruct : IrBase
{
/// Constructor.
IrStruct(AggregateDeclaration* agg);
//////////////////////////////////////////////////////////////////////////
// public fields,
// FIXME this is basically stuff I just haven't gotten around to yet.
/// The D aggregate.
AggregateDeclaration* aggrdecl;
/// Aggregate D type.
Type* type;
/// true only for: align(1) struct S { ... }
bool packed;
/// Composite type debug description.
llvm::DIType diCompositeType;
//////////////////////////////////////////////////////////////////////////
/// Create the __initZ symbol lazily.
LLGlobalVariable* getInitSymbol();
/// Builds the __initZ initializer constant lazily.
LLConstant* getDefaultInit();
/// Create the __vtblZ symbol lazily.
LLGlobalVariable* getVtblSymbol();
/// Builds the __vtblZ initializer constant lazily.
LLConstant* getVtblInit();
/// Create the __ClassZ symbol lazily.
LLGlobalVariable* getClassInfoSymbol();
/// Builds the __ClassZ initializer constant lazily.
LLConstant* getClassInfoInit();
/// Create the __interfaceInfos symbol lazily.
LLGlobalVariable* getInterfaceArraySymbol();
/// Creates a StructInitializer constant.
LLConstant* createStructInitializer(StructInitializer* si);
//////////////////////////////////////////////////////////////////////////
/// Initialize interface.
void initializeInterface();
//////////////////////////////////////////////////////////////////////////
protected:
/// Static default initializer global.
LLGlobalVariable* init;
/// Static default initializer constant.
LLConstant* constInit;
/// Static default initialier type.
LLStructType* init_type;
/// Vtbl global.
LLGlobalVariable* vtbl;
/// Vtbl initializer constant.
LLConstant* constVtbl;
/// ClassInfo global.
LLGlobalVariable* classInfo;
/// ClassInfo initializer constant.
LLConstant* constClassInfo;
/// Map for mapping ClassDeclaration* to LLVM GlobalVariable.
typedef std::map<ClassDeclaration*, llvm::GlobalVariable*> ClassGlobalMap;
/// Map from of interface vtbls implemented by this class.
ClassGlobalMap interfaceVtblMap;
/// Interface info array global.
/// Basically: static object.Interface[num_interfaces]
llvm::GlobalVariable* classInterfacesArray;
/// std::vector of BaseClass*
typedef std::vector<BaseClass*> BaseClassVector;
/// Array of all interface vtbl implementations - in order - implemented
/// by this class.
/// Corresponds to the Interface instances needed to be output.
BaseClassVector interfacesWithVtbls;
//////////////////////////////////////////////////////////////////////////
/// Create static default initializer for struct.
std::vector<llvm::Constant*> createStructDefaultInitializer();
/// Create static default initializer for class.
std::vector<llvm::Constant*> createClassDefaultInitializer();
/// Returns vtbl for interface implementation, creates it if not already built.
llvm::GlobalVariable* getInterfaceVtbl(
BaseClass* b,
bool new_inst,
size_t interfaces_index);
/// Add base class data to initializer list.
/// Also creates the IrField instance for each data field.
void addBaseClassInits(
std::vector<llvm::Constant*>& constants,
ClassDeclaration* base,
size_t& offset,
size_t& field_index);
// FIXME make this a member instead
friend LLConstant* DtoDefineClassInfo(ClassDeclaration* cd);
/// Create the Interface[] interfaces ClassInfo field initializer.
LLConstant* getClassInfoInterfaces();
};
//////////////////////////////////////////////////////////////////////////////
#endif
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