1 /* go-check-interface.c -- check an interface type for a conversion
3 Copyright 2010 The Go Authors. All rights reserved.
4 Use of this source code is governed by a BSD-style
5 license that can be found in the LICENSE file. */
11 /* Check that an interface type matches for a conversion to a
12 non-interface type. This panics if the types are bad. The actual
13 extraction of the object is inlined. */
16 __go_check_interface_type (
17 const struct __go_type_descriptor
*lhs_descriptor
,
18 const struct __go_type_descriptor
*rhs_descriptor
,
19 const struct __go_type_descriptor
*rhs_inter_descriptor
)
21 if (rhs_descriptor
== NULL
)
23 struct __go_empty_interface panic_arg
;
25 runtime_newTypeAssertionError(NULL
, NULL
, lhs_descriptor
->__reflection
,
27 __go_panic(panic_arg
);
30 if (lhs_descriptor
!= rhs_descriptor
31 && !__go_type_descriptors_equal (lhs_descriptor
, rhs_descriptor
)
32 && (lhs_descriptor
->__code
!= GO_UNSAFE_POINTER
33 || !__go_is_pointer_type (rhs_descriptor
))
34 && (rhs_descriptor
->__code
!= GO_UNSAFE_POINTER
35 || !__go_is_pointer_type (lhs_descriptor
)))
37 struct __go_empty_interface panic_arg
;
39 runtime_newTypeAssertionError(rhs_inter_descriptor
->__reflection
,
40 rhs_descriptor
->__reflection
,
41 lhs_descriptor
->__reflection
,
43 __go_panic(panic_arg
);