gcc/libgo/runtime/reflect.goc
Ian Lance Taylor 7a9389330e Add Go frontend, libgo library, and Go testsuite.
gcc/:
	* gcc.c (default_compilers): Add entry for ".go".
	* common.opt: Add -static-libgo as a driver option.
	* doc/install.texi (Configuration): Mention libgo as an option for
	--enable-shared.  Mention go as an option for --enable-languages.
	* doc/invoke.texi (Overall Options): Mention .go as a file name
	suffix.  Mention go as a -x option.
	* doc/frontends.texi (G++ and GCC): Mention Go as a supported
	language.
	* doc/sourcebuild.texi (Top Level): Mention libgo.
	* doc/standards.texi (Standards): Add section on Go language.
	Move references for other languages into their own section.
	* doc/contrib.texi (Contributors): Mention that I contributed the
	Go frontend.
gcc/testsuite/:
	* lib/go.exp: New file.
	* lib/go-dg.exp: New file.
	* lib/go-torture.exp: New file.
	* lib/target-supports.exp (check_compile): Match // Go.

From-SVN: r167407
2010-12-03 04:34:57 +00:00

36 lines
1010 B
Plaintext

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package reflect
#include "go-type.h"
#include "interface.h"
#define nil NULL
typedef unsigned char byte;
typedef struct __go_interface Iface;
typedef struct __go_empty_interface Eface;
func setiface(typ *byte, x *byte, ret *byte) {
struct __go_interface_type *t;
const struct __go_type_descriptor* xt;
/* FIXME: We should check __type_descriptor to verify that
this is really a type descriptor. */
t = (struct __go_interface_type *)typ;
if(t->__methods.__count == 0) {
// already an empty interface
*(Eface*)ret = *(Eface*)x;
return;
}
xt = ((Eface*)x)->__type_descriptor;
if(xt == nil) {
// can assign nil to any interface
((Iface*)ret)->__methods = nil;
((Iface*)ret)->__object = nil;
return;
}
((Iface*)ret)->__methods = __go_convert_interface(&t->__common, xt);
((Iface*)ret)->__object = ((Eface*)x)->__object;
}