view dmd2/enum.h @ 1479:4f7d50c744ed

Rewrite `StructLiteralExp::toElem` to store individual fields instead of generating a constant to fill the entire struct with a single `store`. This is much more efficient at compile time (fixing #320) and vastly reduces the size of the emitted code. Since LLVM no longer needs to keep the data for all fields in "registers" until the store happens, it should also be more efficient at run time in cases where the fields aren't assigned with constants. There's also some code clean-up by removing duplicated logic.
author Frits van Bommel <fvbommel wxs.nl>
date Sat, 06 Jun 2009 20:16:13 +0200
parents 638d16625da2
children 54b3c1394d62
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// Compiler implementation of the D programming language
// Copyright (c) 1999-2008 by Digital Mars
// All Rights Reserved
// written by Walter Bright
// http://www.digitalmars.com
// License for redistribution is by either the Artistic License
// in artistic.txt, or the GNU General Public License in gnu.txt.
// See the included readme.txt for details.

#ifndef DMD_ENUM_H
#define DMD_ENUM_H

#ifdef __DMC__
#pragma once
#endif /* __DMC__ */

#include "root.h"
#include "dsymbol.h"

struct Identifier;
struct Type;
struct Expression;
#ifdef _DH
struct HdrGenState;
#endif


struct EnumDeclaration : ScopeDsymbol
{   /* enum ident : memtype { ... }
     */
    Type *type;			// the TypeEnum
    Type *memtype;		// type of the members

#if DMDV1
    dinteger_t maxval;
    dinteger_t minval;
    dinteger_t defaultval;	// default initializer
#else
    Expression *maxval;
    Expression *minval;
    Expression *defaultval;	// default initializer

    Scope *scope;		// !=NULL means context to use
#endif
    int isdeprecated;

    EnumDeclaration(Loc loc, Identifier *id, Type *memtype);
    Dsymbol *syntaxCopy(Dsymbol *s);
    void semantic(Scope *sc);
    int oneMember(Dsymbol **ps);
    void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
    Type *getType();
    const char *kind();
#if DMDV2
    Dsymbol *search(Loc, Identifier *ident, int flags);
#endif
    int isDeprecated();			// is Dsymbol deprecated?

    void emitComment(Scope *sc);
    void toDocBuffer(OutBuffer *buf);

    EnumDeclaration *isEnumDeclaration() { return this; }

#if IN_DMD
    void toObjFile(int multiobj);			// compile to .obj file
    void toDebug();
    int cvMember(unsigned char *p);

    Symbol *sinit;
    Symbol *toInitializer();
#endif

#if IN_LLVM
    void codegen(Ir*);
#endif
};


struct EnumMember : Dsymbol
{
    Expression *value;
    Type *type;

    EnumMember(Loc loc, Identifier *id, Expression *value, Type *type);
    Dsymbol *syntaxCopy(Dsymbol *s);
    void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
    const char *kind();

    void emitComment(Scope *sc);
    void toDocBuffer(OutBuffer *buf);

    EnumMember *isEnumMember() { return this; }
};

#endif /* DMD_ENUM_H */