view dmd/root/stringtable.h @ 1499:df11cdec45a2

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 1853dcd9b944
children
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// 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 STRINGTABLE_H
#define STRINGTABLE_H

#if __SC__
#pragma once
#endif

#include "root.h"
#include "dchar.h"
#include "lstring.h"

struct StringValue
{
    union
    {	int intvalue;
	void *ptrvalue;
	dchar *string;
    };
    Lstring lstring;
};

struct StringTable : Object
{
    void **table;
    unsigned count;
    unsigned tabledim;

    StringTable(unsigned size = 37);
    ~StringTable();

    StringValue *lookup(const dchar *s, unsigned len);
    StringValue *insert(const dchar *s, unsigned len);
    StringValue *update(const dchar *s, unsigned len);

private:
    void **search(const dchar *s, unsigned len);
};

#endif