func GoToCgo(ti *gi.TypeInfo, arg0, arg1 string, flags ConvFlags) string {
var out bytes.Buffer
printf := PrinterTo(&out)
switch tag := ti.Tag(); tag {
case gi.TYPE_TAG_VOID:
if ti.IsPointer() {
printf("%s = unsafe.Pointer(%s)", arg1, arg0)
break
}
printf("<ERROR: void>")
case gi.TYPE_TAG_UTF8, gi.TYPE_TAG_FILENAME:
printf("%s = _GoStringToGString(%s)", arg1, arg0)
if flags&ConvOwnEverything == 0 {
printf("\ndefer C.free(unsafe.Pointer(%s))", arg1)
}
case gi.TYPE_TAG_ARRAY:
switch ti.ArrayType() {
case gi.ARRAY_TYPE_C:
var nelem string
if ti.IsZeroTerminated() {
nelem = fmt.Sprintf("(len(%s) + 1)", arg0)
} else {
nelem = fmt.Sprintf("len(%s)", arg0)
}
// alloc memory
printf("%s = (%s)(C.malloc(C.size_t(int(unsafe.Sizeof(*%s)) * %s)))\n",
arg1, CgoType(ti, TypeNone), arg1, nelem)
printf("defer C.free(unsafe.Pointer(%s))\n", arg1)
// convert elements
printf("for i, e := range %s {\n", arg0)
array := CgoArrayToGoArray(ti.ParamType(0), arg1)
conv := GoToCgo(ti.ParamType(0), "e", array+"[i]", flags)
printf(PrintLinesWithIndent(conv))
printf("}")
// write a trailing zero if necessary (TODO: buggy)
if ti.IsZeroTerminated() {
printf("\n%s[len(%s)] = nil", array, arg0)
}
}
case gi.TYPE_TAG_GLIST:
case gi.TYPE_TAG_GSLIST:
case gi.TYPE_TAG_GHASH:
case gi.TYPE_TAG_ERROR:
case gi.TYPE_TAG_INTERFACE:
if ti.IsPointer() {
flags |= ConvPointer
}
printf(GoToCgoForInterface(ti.Interface(), arg0, arg1, flags))
default:
if ti.IsPointer() {
flags |= ConvPointer
}
printf(GoToCgoForTag(tag, arg0, arg1, flags))
}
return out.String()
}