//===-- gen/classes.h - D class code generation -----------------*- C++ -*-===//
//
//                         LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
//
// Functions for generating LLVM types and init/TypeInfo/etc. values from D
// class declarations and handling class instance values.
//
//===----------------------------------------------------------------------===//

#pragma once

#include <utility>

#include "gen/structs.h"

class ClassDeclaration;
class CtorDeclaration;
class DValue;
class FuncDeclaration;
class NewExp;
class TypeClass;

/// Resolves the llvm type for a class declaration
void DtoResolveClass(ClassDeclaration *cd);

DValue *DtoNewClass(const Loc &loc, TypeClass *type, NewExp *newexp);
void DtoInitClass(TypeClass *tc, llvm::Value *dst);
void DtoFinalizeClass(const Loc &loc, llvm::Value *inst);
void DtoFinalizeScopeClass(const Loc &loc, DValue *dval,
                           bool dynTypeMatchesStaticType);

DValue *DtoCastClass(const Loc &loc, DValue *val, Type *to);
DValue *DtoDynamicCastObject(const Loc &loc, DValue *val, Type *to);

DValue *DtoDynamicCastInterface(const Loc &loc, DValue *val, Type *to);

bool DtoIsObjcLinkage(Type *to);

/// Returns pair of function pointer and vtable pointer.
std::pair<llvm::Value *, llvm::Value *>
DtoVirtualFunctionPointer(DValue *inst, FuncDeclaration *fdecl);