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https://github.com/xomboverlord/ldc.git
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a3a511ca55
This also allows us to enable the assert in IrType::IrType. Unfortunately, this is mostly a "peace of mind" commit, there doesn't seem to have been a bug actually caused by the transitory duplicate IrTypePointer/IrTypeStruct instances. The remaining xyz2llvm static methods are not exactly pretty, they should probably just be folded into get.
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
//===-- ir/irtypeclass.h - IrType implementation for D classes --*- C++ -*-===//
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//
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// LDC – the LLVM D compiler
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//
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// This file is distributed under the BSD-style LDC license. See the LICENSE
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// file for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Provides the IrType subclass used to represent D classes.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __LDC_IR_IRTYPECLASS_H__
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#define __LDC_IR_IRTYPECLASS_H__
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#include "ir/irtypestruct.h"
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#include <llvm/DerivedTypes.h>
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///
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class IrTypeClass : public IrTypeAggr
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{
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public:
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///
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static IrTypeClass* get(ClassDeclaration* cd);
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///
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virtual IrTypeClass* isClass() { return this; }
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///
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llvm::Type* getLLType();
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/// Returns the actual storage type, i.e. without the indirection
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/// for the class reference.
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llvm::Type* getMemoryLLType();
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/// Returns the vtable type for this class.
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llvm::Type* getVtbl() { return vtbl_type; }
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/// Get index to interface implementation.
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/// Returns the index of a specific interface implementation in this
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/// class or ~0 if not found.
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size_t getInterfaceIndex(ClassDeclaration* inter);
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/// Returns the total number of pointers in the vtable.
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unsigned getVtblSize() { return vtbl_size; }
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/// Returns the number of interface implementations (vtables) in this
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/// class.
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unsigned getNumInterfaceVtbls() { return num_interface_vtbls; }
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protected:
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///
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IrTypeClass(ClassDeclaration* cd);
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///
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ClassDeclaration* cd;
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///
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TypeClass* tc;
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/// Vtable type.
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llvm::StructType *vtbl_type;
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/// Number of pointers in vtable.
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unsigned vtbl_size;
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/// Number of interface implementations (vtables) in this class.
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unsigned num_interface_vtbls;
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/// std::map type mapping ClassDeclaration* to size_t.
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typedef std::map<ClassDeclaration*, size_t> ClassIndexMap;
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/// Map for mapping the index of a specific interface implementation
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/// in this class to its ClassDeclaration.
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ClassIndexMap interfaceMap;
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//////////////////////////////////////////////////////////////////////////
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/// Builds a vtable type given the type of the first entry and an array
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/// of all entries.
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std::vector<llvm::Type*> buildVtblType(Type* first, Array* vtbl_array);
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///
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void addBaseClassData(
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std::vector<llvm::Type*>& defaultTypes,
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ClassDeclaration* base,
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size_t& offset,
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size_t& field_index);
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/// Adds the interface and all it's base interface to the interface
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/// to index map.
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void addInterfaceToMap(ClassDeclaration* inter, size_t index);
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};
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#endif
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