view lphobos/typeinfo1/ti_char.d @ 1275:bedf0bfb8fdb

Implement first D-specific optimization pass: -simplify-drtcalls. It uses the machinery of the standard -simplify-libcalls pass, but optimizes calls to the D runtime instead of calls to C libraries. At the moment, these optimizations are implemented by this pass: - Avoid the runtime call for `arr.length = newlen` if it can determine that the new length isn't longer than the old one. - Ditto for `cast(T[]) arr` if it will clearly always succeed. (e.g. if the length of the original array is zero, or if the old element size is a multiple of the new element size)
author Frits van Bommel <fvbommel wxs.nl>
date Tue, 28 Apr 2009 21:58:06 +0200
parents 2c3cd3596187
children
line wrap: on
line source


module typeinfo1.ti_char;

class TypeInfo_a : TypeInfo
{
    char[] toString() { return "char"; }

    hash_t getHash(void *p)
    {
	return *cast(char *)p;
    }

    int equals(void *p1, void *p2)
    {
	return *cast(char *)p1 == *cast(char *)p2;
    }

    int compare(void *p1, void *p2)
    {
	return *cast(char *)p1 - *cast(char *)p2;
    }

    size_t tsize()
    {
	return char.sizeof;
    }

    void swap(void *p1, void *p2)
    {
	char t;

	t = *cast(char *)p1;
	*cast(char *)p1 = *cast(char *)p2;
	*cast(char *)p2 = t;
    }

    void[] init()
    {	static char c;

	return (cast(char *)&c)[0 .. 1];
    }
}