view tests/mini/vararg4.d @ 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 1bb99290e03a
children
line wrap: on
line source

module vararg4;
import tango.core.Vararg;
extern(C) int printf(char*, ...);

void vafunc(...)
{
    foreach(i,v; _arguments) {
        if (typeid(byte) == v) {
            printf("byte(%d)\n", va_arg!(byte)(_argptr));
        }
        else if (typeid(short) == v) {
            printf("short(%d)\n", va_arg!(short)(_argptr));
        }
        else if (typeid(int) == v) {
            printf("int(%d)\n", va_arg!(int)(_argptr));
        }
        else if (typeid(long) == v) {
            printf("long(%ld)\n", va_arg!(long)(_argptr));
        }
        else if (typeid(float) == v) {
            printf("float(%f)\n", va_arg!(float)(_argptr));
        }
        else if (typeid(double) == v) {
            printf("double(%f)\n", va_arg!(double)(_argptr));
        }
        else if (typeid(real) == v) {
            printf("real(%f)\n", va_arg!(real)(_argptr));
        }
        else
        assert(0, "unsupported type");
    }
}

void main()
{
    vafunc(byte.max,short.max,1,2,3,4L,5.0f,6.0,cast(real)7);
}