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|
package mangler
import (
"math/bits"
_ "unsafe"
)
// Notes:
// the use of unsafe conversion from the direct interface values to
// the chosen types in each of the below functions allows us to convert
// not only those types directly, but anything type-aliased to those
// types. e.g. `time.Duration` directly as int64.
func mangle_string(buf []byte, a any) []byte {
return append(buf, *(*string)(iface_value(a))...)
}
func mangle_string_ptr(buf []byte, a any) []byte {
if ptr := (*string)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
return append(buf, *ptr...)
}
buf = append(buf, '0')
return buf
}
func mangle_string_slice(buf []byte, a any) []byte {
s := *(*[]string)(iface_value(a))
for _, s := range s {
buf = append(buf, s...)
buf = append(buf, ',')
}
if len(s) > 0 {
buf = buf[:len(buf)-1]
}
return buf
}
func mangle_bool(buf []byte, a any) []byte {
if *(*bool)(iface_value(a)) {
return append(buf, '1')
}
return append(buf, '0')
}
func mangle_bool_ptr(buf []byte, a any) []byte {
if ptr := (*bool)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
if *ptr {
return append(buf, '1')
}
return append(buf, '0')
}
buf = append(buf, '0')
return buf
}
func mangle_bool_slice(buf []byte, a any) []byte {
for _, b := range *(*[]bool)(iface_value(a)) {
if b {
buf = append(buf, '1')
} else {
buf = append(buf, '0')
}
}
return buf
}
func mangle_8bit(buf []byte, a any) []byte {
return append(buf, *(*uint8)(iface_value(a)))
}
func mangle_8bit_ptr(buf []byte, a any) []byte {
if ptr := (*uint8)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
return append(buf, *ptr)
}
buf = append(buf, '0')
return buf
}
func mangle_8bit_slice(buf []byte, a any) []byte {
return append(buf, *(*[]uint8)(iface_value(a))...)
}
func mangle_16bit(buf []byte, a any) []byte {
return append_uint16(buf, *(*uint16)(iface_value(a)))
}
func mangle_16bit_ptr(buf []byte, a any) []byte {
if ptr := (*uint16)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
return append_uint16(buf, *ptr)
}
buf = append(buf, '0')
return buf
}
func mangle_16bit_slice(buf []byte, a any) []byte {
for _, u := range *(*[]uint16)(iface_value(a)) {
buf = append_uint16(buf, u)
}
return buf
}
func mangle_32bit(buf []byte, a any) []byte {
return append_uint32(buf, *(*uint32)(iface_value(a)))
}
func mangle_32bit_ptr(buf []byte, a any) []byte {
if ptr := (*uint32)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
return append_uint32(buf, *ptr)
}
buf = append(buf, '0')
return buf
}
func mangle_32bit_slice(buf []byte, a any) []byte {
for _, u := range *(*[]uint32)(iface_value(a)) {
buf = append_uint32(buf, u)
}
return buf
}
func mangle_64bit(buf []byte, a any) []byte {
return append_uint64(buf, *(*uint64)(iface_value(a)))
}
func mangle_64bit_ptr(buf []byte, a any) []byte {
if ptr := (*uint64)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
return append_uint64(buf, *ptr)
}
buf = append(buf, '0')
return buf
}
func mangle_64bit_slice(buf []byte, a any) []byte {
for _, u := range *(*[]uint64)(iface_value(a)) {
buf = append_uint64(buf, u)
}
return buf
}
// mangle_platform_int contains the correct iface mangler on runtime for platform int size.
var mangle_platform_int = func() Mangler {
switch bits.UintSize {
case 32:
return mangle_32bit
case 64:
return mangle_64bit
default:
panic("unexpected platform int size")
}
}()
// mangle_platform_int_ptr contains the correct iface mangler on runtime for platform int size.
var mangle_platform_int_ptr = func() Mangler {
switch bits.UintSize {
case 32:
return mangle_32bit_ptr
case 64:
return mangle_64bit_ptr
default:
panic("unexpected platform int size")
}
}()
// mangle_platform_int_slice contains the correct iface mangler on runtime for platform int size.
var mangle_platform_int_slice = func() Mangler {
switch bits.UintSize {
case 32:
return mangle_32bit_slice
case 64:
return mangle_64bit_slice
default:
panic("unexpected platform int size")
}
}()
// uint128 provides an easily mangleable data type for 128bit data types to be cast into.
type uint128 [2]uint64
func mangle_128bit(buf []byte, a any) []byte {
u2 := *(*uint128)(iface_value(a))
buf = append_uint64(buf, u2[0])
buf = append_uint64(buf, u2[1])
return buf
}
func mangle_128bit_ptr(buf []byte, a any) []byte {
if ptr := (*uint128)(iface_value(a)); ptr != nil {
buf = append(buf, '1')
buf = append_uint64(buf, (*ptr)[0])
buf = append_uint64(buf, (*ptr)[1])
}
buf = append(buf, '0')
return buf
}
func mangle_128bit_slice(buf []byte, a any) []byte {
for _, u2 := range *(*[]uint128)(iface_value(a)) {
buf = append_uint64(buf, u2[0])
buf = append_uint64(buf, u2[1])
}
return buf
}
func mangle_mangled(buf []byte, a any) []byte {
if v := a.(Mangled); v != nil {
buf = append(buf, '1')
return v.Mangle(buf)
}
buf = append(buf, '0')
return buf
}
func mangle_binary(buf []byte, a any) []byte {
if v := a.(binarymarshaler); v != nil {
b, err := v.MarshalBinary()
if err != nil {
panic("mangle_binary: " + err.Error())
}
buf = append(buf, '1')
return append(buf, b...)
}
buf = append(buf, '0')
return buf
}
func mangle_stringer(buf []byte, a any) []byte {
if v := a.(stringer); v != nil {
buf = append(buf, '1')
return append(buf, v.String()...)
}
buf = append(buf, '0')
return buf
}
func mangle_text(buf []byte, a any) []byte {
if v := a.(textmarshaler); v != nil {
b, err := v.MarshalText()
if err != nil {
panic("mangle_text: " + err.Error())
}
buf = append(buf, '1')
return append(buf, b...)
}
buf = append(buf, '0')
return buf
}
func mangle_json(buf []byte, a any) []byte {
if v := a.(jsonmarshaler); v != nil {
b, err := v.MarshalJSON()
if err != nil {
panic("mangle_json: " + err.Error())
}
buf = append(buf, '1')
return append(buf, b...)
}
buf = append(buf, '0')
return buf
}
|
