From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libgo/runtime/go-type-interface.c | 55 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 libgo/runtime/go-type-interface.c (limited to 'libgo/runtime/go-type-interface.c') diff --git a/libgo/runtime/go-type-interface.c b/libgo/runtime/go-type-interface.c new file mode 100644 index 000000000..9750b843c --- /dev/null +++ b/libgo/runtime/go-type-interface.c @@ -0,0 +1,55 @@ +/* go-type-interface.c -- hash and equality interface functions. + + Copyright 2009 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. */ + +#include "interface.h" +#include "go-type.h" + +/* A hash function for an interface. */ + +size_t +__go_type_hash_interface (const void *vval, + size_t key_size __attribute__ ((unused))) +{ + const struct __go_interface *val; + const struct __go_type_descriptor *descriptor; + size_t size; + + val = (const struct __go_interface *) vval; + if (val->__methods == NULL) + return 0; + descriptor = (const struct __go_type_descriptor *) val->__methods[0]; + size = descriptor->__size; + if (__go_is_pointer_type (descriptor)) + return descriptor->__hashfn (&val->__object, size); + else + return descriptor->__hashfn (val->__object, size); +} + +/* An equality function for an interface. */ + +_Bool +__go_type_equal_interface (const void *vv1, const void *vv2, + size_t key_size __attribute__ ((unused))) +{ + const struct __go_interface *v1; + const struct __go_interface *v2; + const struct __go_type_descriptor* v1_descriptor; + const struct __go_type_descriptor* v2_descriptor; + + v1 = (const struct __go_interface *) vv1; + v2 = (const struct __go_interface *) vv2; + if (v1->__methods == NULL || v2->__methods == NULL) + return v1->__methods == v2->__methods; + v1_descriptor = (const struct __go_type_descriptor *) v1->__methods[0]; + v2_descriptor = (const struct __go_type_descriptor *) v2->__methods[0]; + if (!__go_type_descriptors_equal (v1_descriptor, v2_descriptor)) + return 0; + if (__go_is_pointer_type (v1_descriptor)) + return v1->__object == v2->__object; + else + return v1_descriptor->__equalfn (v1->__object, v2->__object, + v1_descriptor->__size); +} -- cgit v1.2.3