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Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324. The idea is to separate the notion of const from 'this variable can always be replaced with its initializer' in the frontend. To do that, I introduced Declaration::isSameAsInitializer, which is overridden in VarDeclaration to return false for constants that have a struct literal initializer. So {{{ const S s = S(5); void foo() { auto ps = &s; } // is no longer replaced by void foo() { auto ps = &(S(5)); } }}} To make taking the address of a struct constant with a struct-initializer outside of function scope possible, I made sure that AddrExp::optimize doesn't try to run the argument's optimization with WANTinterpret - that'd again replace the constant with a struct literal temporary.
author Christian Kamm <kamm incasoftware de>
date Sun, 14 Jun 2009 19:49:58 +0200
parents e83ba4ae4878
children def7a1d494fd
line wrap: on
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// Compiler implementation of the D programming language
// Copyright (c) 1999-2007 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_IMPORT_H
#define DMD_IMPORT_H

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

#include "dsymbol.h"


struct Identifier;
struct Scope;
struct OutBuffer;
struct Module;
struct Package;
struct AliasDeclaration;
#ifdef _DH
struct HdrGenState;
#endif

struct Import : Dsymbol
{
    Array *packages;		// array of Identifier's representing packages
    Identifier *id;		// module Identifier
    Identifier *aliasId;
    int isstatic;		// !=0 if static import
    enum PROT protection;

    // Pairs of alias=name to bind into current namespace
    Array names;
    Array aliases;

    Array aliasdecls;		// AliasDeclarations for names/aliases

    Module *mod;
    Package *pkg;		// leftmost package/module

    Import(Loc loc, Array *packages, Identifier *id, Identifier *aliasId,
	int isstatic);
    void addAlias(Identifier *name, Identifier *alias);

    const char *kind();
    enum PROT prot();
    Dsymbol *syntaxCopy(Dsymbol *s);	// copy only syntax trees
    void load(Scope *sc);
    void semantic(Scope *sc);
    void semantic2(Scope *sc);
    Dsymbol *toAlias();
    int addMember(Scope *sc, ScopeDsymbol *s, int memnum);
    Dsymbol *search(Loc loc, Identifier *ident, int flags);
    int overloadInsert(Dsymbol *s);
    void toCBuffer(OutBuffer *buf, HdrGenState *hgs);

    Import *isImport() { return this; }
};

#endif /* DMD_IMPORT_H */