1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
package libs
// #include <stdlib.h>
// #include "sass/context.h"
//
// extern union Sass_Value* GoBridge( union Sass_Value* s_args, int idx);
//
// union Sass_Value* CallSassFunction( union Sass_Value* s_args, Sass_Function_Entry cb, struct Sass_Options* opts ) {
// void* cookie = sass_function_get_cookie(cb);
// union Sass_Value* ret;
// int idx = *((int *)cookie);
// ret = GoBridge(s_args, idx);
// return ret;
// }
//
import "C"
import "unsafe"
type SassFunc C.Sass_Function_Entry
// SassMakeFunction binds a Go pointer to a Sass function signature
func SassMakeFunction(signature string, idx *int) SassFunc {
csign := C.CString(signature)
ptr := unsafe.Pointer(idx)
fn := C.sass_make_function(
csign,
C.Sass_Function_Fn(C.CallSassFunction),
ptr)
return (SassFunc)(fn)
}
var globalFuncs SafeMap
func init() {
globalFuncs.init()
}
// BindFuncs attaches a slice of Functions to a sass options. Signatures
// are already defined in the SassFunc.
func BindFuncs(opts SassOptions, cookies []Cookie) []int {
funcs := make([]SassFunc, len(cookies))
ids := make([]int, len(cookies))
for i, cookie := range cookies {
idx := globalFuncs.Set(cookies[i])
fn := SassMakeFunction(cookie.Sign, idx)
funcs[i] = fn
ids[i] = *idx
}
sz := C.size_t(len(funcs))
cfuncs := C.sass_make_function_list(sz)
for i, cfn := range funcs {
C.sass_function_set_list_entry(cfuncs, C.size_t(i), C.Sass_Function_Entry(cfn))
}
C.sass_option_set_c_functions(opts, cfuncs)
return ids
}
func RemoveFuncs(ids []int) error {
for _, idx := range ids {
globalFuncs.Del(idx)
}
return nil
}
|
