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view dmd2/macro.h @ 1418:f5f8c21ce6ef
Make "`aa[key]`" use the same runtime call as "`key in aa`". The runtime calls
these were using were different, but with equivalent definitions.
With `ldc -O3`, the following functions now all compile to the exact same code:
{{{
int[int] y;
void foo(int x) {
if (x in y) {
auto z = x in y;
sink(*z);
}
}
void bar(int x) {
if (x in y) {
sink(y[x]);
}
}
void baz(int x) {
if (auto p = x in y) {
sink(*p);
}
}
}}}
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Mon, 25 May 2009 12:50:40 +0200 |
parents | f04dde6e882c |
children |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2006 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_MACRO_H #define DMD_MACRO_H 1 #include <stdio.h> #include <string.h> #include <time.h> #include <ctype.h> #include "root.h" class Macro { Macro *next; // next in list unsigned char *name; // macro name size_t namelen; // length of macro name unsigned char *text; // macro replacement text size_t textlen; // length of replacement text int inuse; // macro is in use (don't expand) Macro(unsigned char *name, size_t namelen, unsigned char *text, size_t textlen); Macro *search(unsigned char *name, size_t namelen); public: static Macro *define(Macro **ptable, unsigned char *name, size_t namelen, unsigned char *text, size_t textlen); void expand(OutBuffer *buf, unsigned start, unsigned *pend, unsigned char *arg, unsigned arglen); }; #endif