// returns the size of a type, works only for TypeExact
func TypeSize(ti *gi.TypeInfo, flags TypeFlags) int {
ptrsize := int(unsafe.Sizeof(unsafe.Pointer(nil)))
switch tag := ti.Tag(); tag {
case gi.TYPE_TAG_VOID:
if ti.IsPointer() {
return ptrsize
}
panic("Non-pointer void type is not supported")
case gi.TYPE_TAG_UTF8, gi.TYPE_TAG_FILENAME, gi.TYPE_TAG_GLIST,
gi.TYPE_TAG_GSLIST, gi.TYPE_TAG_GHASH:
return ptrsize
case gi.TYPE_TAG_ARRAY:
size := ti.ArrayFixedSize()
if size != -1 {
return size * TypeSize(ti.ParamType(0), flags)
}
return ptrsize
case gi.TYPE_TAG_INTERFACE:
if ti.IsPointer() {
flags |= TypePointer
}
return TypeSizeForInterface(ti.Interface(), flags)
default:
if ti.IsPointer() {
flags |= TypePointer
}
return TypeSizeForTag(tag, flags)
}
panic("unreachable: " + ti.Tag().String())
}
func TypeNeedsWrapper(ti *gi.TypeInfo) bool {
switch tag := ti.Tag(); tag {
case gi.TYPE_TAG_VOID:
if ti.IsPointer() {
return false
}
panic("Non-pointer void type is not supported")
case gi.TYPE_TAG_UTF8, gi.TYPE_TAG_FILENAME, gi.TYPE_TAG_GLIST,
gi.TYPE_TAG_GSLIST, gi.TYPE_TAG_GHASH:
return true
case gi.TYPE_TAG_ARRAY:
size := ti.ArrayFixedSize()
if size != -1 {
return TypeNeedsWrapper(ti.ParamType(0))
}
return true
case gi.TYPE_TAG_ERROR:
panic("not implemented")
case gi.TYPE_TAG_INTERFACE:
switch ti.Interface().Type() {
case gi.INFO_TYPE_CALLBACK, gi.INFO_TYPE_ENUM, gi.INFO_TYPE_FLAGS,
gi.INFO_TYPE_STRUCT, gi.INFO_TYPE_UNION:
return false
}
return true
}
return false
}
func GoType(ti *gi.TypeInfo, flags TypeFlags) string {
var out bytes.Buffer
switch tag := ti.Tag(); tag {
case gi.TYPE_TAG_VOID:
if ti.IsPointer() {
out.WriteString("unsafe.Pointer")
break
}
panic("Non-pointer void type is not supported")
case gi.TYPE_TAG_UTF8, gi.TYPE_TAG_FILENAME:
if flags&TypeExact != 0 {
out.WriteString("unsafe.Pointer")
} else {
out.WriteString("string")
}
case gi.TYPE_TAG_ARRAY:
size := ti.ArrayFixedSize()
if size != -1 {
fmt.Fprintf(&out, "[%d]", size)
} else {
if flags&TypeExact != 0 {
out.WriteString("unsafe.Pointer")
} else {
out.WriteString("[]")
}
}
out.WriteString(GoType(ti.ParamType(0), flags))
case gi.TYPE_TAG_GLIST:
if flags&TypeExact != 0 {
out.WriteString("unsafe.Pointer")
} else {
out.WriteString("[]")
out.WriteString(GoType(ti.ParamType(0), flags|TypeListMember))
}
case gi.TYPE_TAG_GSLIST:
if flags&TypeExact != 0 {
out.WriteString("unsafe.Pointer")
} else {
out.WriteString("[]")
out.WriteString(GoType(ti.ParamType(0), flags|TypeListMember))
}
case gi.TYPE_TAG_GHASH:
if flags&TypeExact != 0 {
out.WriteString("unsafe.Pointer")
} else {
out.WriteString("map[")
out.WriteString(GoType(ti.ParamType(0), flags))
out.WriteString("]")
out.WriteString(GoType(ti.ParamType(1), flags))
}
case gi.TYPE_TAG_ERROR:
// not used?
out.WriteString("error")
case gi.TYPE_TAG_INTERFACE:
if ti.IsPointer() {
flags |= TypePointer
}
out.WriteString(GoTypeForInterface(ti.Interface(), flags))
default:
if ti.IsPointer() {
flags |= TypePointer
}
out.WriteString(GoTypeForTag(tag, flags))
}
return out.String()
}