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package vm_indent
import (
"encoding/json"
"fmt"
"unsafe"
"github.com/goccy/go-json/internal/encoder"
"github.com/goccy/go-json/internal/runtime"
)
const uintptrSize = 4 << (^uintptr(0) >> 63)
var (
appendInt = encoder.AppendInt
appendUint = encoder.AppendUint
appendFloat32 = encoder.AppendFloat32
appendFloat64 = encoder.AppendFloat64
appendString = encoder.AppendString
appendByteSlice = encoder.AppendByteSlice
appendNumber = encoder.AppendNumber
appendStructEnd = encoder.AppendStructEndIndent
appendIndent = encoder.AppendIndent
errUnsupportedValue = encoder.ErrUnsupportedValue
errUnsupportedFloat = encoder.ErrUnsupportedFloat
mapiterinit = encoder.MapIterInit
mapiterkey = encoder.MapIterKey
mapitervalue = encoder.MapIterValue
mapiternext = encoder.MapIterNext
maplen = encoder.MapLen
)
type emptyInterface struct {
typ *runtime.Type
ptr unsafe.Pointer
}
type nonEmptyInterface struct {
itab *struct {
ityp *runtime.Type // static interface type
typ *runtime.Type // dynamic concrete type
// unused fields...
}
ptr unsafe.Pointer
}
func errUnimplementedOp(op encoder.OpType) error {
return fmt.Errorf("encoder (indent): opcode %s has not been implemented", op)
}
func load(base uintptr, idx uint32) uintptr {
addr := base + uintptr(idx)
return **(**uintptr)(unsafe.Pointer(&addr))
}
func store(base uintptr, idx uint32, p uintptr) {
addr := base + uintptr(idx)
**(**uintptr)(unsafe.Pointer(&addr)) = p
}
func loadNPtr(base uintptr, idx uint32, ptrNum uint8) uintptr {
addr := base + uintptr(idx)
p := **(**uintptr)(unsafe.Pointer(&addr))
for i := uint8(0); i < ptrNum; i++ {
if p == 0 {
return 0
}
p = ptrToPtr(p)
}
return p
}
func ptrToUint64(p uintptr, bitSize uint8) uint64 {
switch bitSize {
case 8:
return (uint64)(**(**uint8)(unsafe.Pointer(&p)))
case 16:
return (uint64)(**(**uint16)(unsafe.Pointer(&p)))
case 32:
return (uint64)(**(**uint32)(unsafe.Pointer(&p)))
case 64:
return **(**uint64)(unsafe.Pointer(&p))
}
return 0
}
func ptrToFloat32(p uintptr) float32 { return **(**float32)(unsafe.Pointer(&p)) }
func ptrToFloat64(p uintptr) float64 { return **(**float64)(unsafe.Pointer(&p)) }
func ptrToBool(p uintptr) bool { return **(**bool)(unsafe.Pointer(&p)) }
func ptrToBytes(p uintptr) []byte { return **(**[]byte)(unsafe.Pointer(&p)) }
func ptrToNumber(p uintptr) json.Number { return **(**json.Number)(unsafe.Pointer(&p)) }
func ptrToString(p uintptr) string { return **(**string)(unsafe.Pointer(&p)) }
func ptrToSlice(p uintptr) *runtime.SliceHeader { return *(**runtime.SliceHeader)(unsafe.Pointer(&p)) }
func ptrToPtr(p uintptr) uintptr {
return uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&p)))
}
func ptrToNPtr(p uintptr, ptrNum uint8) uintptr {
for i := uint8(0); i < ptrNum; i++ {
if p == 0 {
return 0
}
p = ptrToPtr(p)
}
return p
}
func ptrToUnsafePtr(p uintptr) unsafe.Pointer {
return *(*unsafe.Pointer)(unsafe.Pointer(&p))
}
func ptrToInterface(code *encoder.Opcode, p uintptr) interface{} {
return *(*interface{})(unsafe.Pointer(&emptyInterface{
typ: code.Type,
ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
}))
}
func appendBool(_ *encoder.RuntimeContext, b []byte, v bool) []byte {
if v {
return append(b, "true"...)
}
return append(b, "false"...)
}
func appendNull(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, "null"...)
}
func appendComma(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, ',', '\n')
}
func appendNullComma(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, "null,\n"...)
}
func appendColon(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b[:len(b)-2], ':', ' ')
}
func appendMapKeyValue(ctx *encoder.RuntimeContext, code *encoder.Opcode, b, key, value []byte) []byte {
b = appendIndent(ctx, b, code.Indent+1)
b = append(b, key...)
b[len(b)-2] = ':'
b[len(b)-1] = ' '
return append(b, value...)
}
func appendMapEnd(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
b = b[:len(b)-2]
b = append(b, '\n')
b = appendIndent(ctx, b, code.Indent)
return append(b, '}', ',', '\n')
}
func appendArrayHead(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
b = append(b, '[', '\n')
return appendIndent(ctx, b, code.Indent+1)
}
func appendArrayEnd(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
b = b[:len(b)-2]
b = append(b, '\n')
b = appendIndent(ctx, b, code.Indent)
return append(b, ']', ',', '\n')
}
func appendEmptyArray(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, '[', ']', ',', '\n')
}
func appendEmptyObject(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, '{', '}', ',', '\n')
}
func appendObjectEnd(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
last := len(b) - 1
// replace comma to newline
b[last-1] = '\n'
b = appendIndent(ctx, b[:last], code.Indent)
return append(b, '}', ',', '\n')
}
func appendMarshalJSON(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte, v interface{}) ([]byte, error) {
return encoder.AppendMarshalJSONIndent(ctx, code, b, v)
}
func appendMarshalText(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte, v interface{}) ([]byte, error) {
return encoder.AppendMarshalTextIndent(ctx, code, b, v)
}
func appendStructHead(_ *encoder.RuntimeContext, b []byte) []byte {
return append(b, '{', '\n')
}
func appendStructKey(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
b = appendIndent(ctx, b, code.Indent)
b = append(b, code.Key...)
return append(b, ' ')
}
func appendStructEndSkipLast(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
last := len(b) - 1
if b[last-1] == '{' {
b[last] = '}'
} else {
if b[last] == '\n' {
// to remove ',' and '\n' characters
b = b[:len(b)-2]
}
b = append(b, '\n')
b = appendIndent(ctx, b, code.Indent-1)
b = append(b, '}')
}
return appendComma(ctx, b)
}
func restoreIndent(ctx *encoder.RuntimeContext, code *encoder.Opcode, ctxptr uintptr) {
ctx.BaseIndent = uint32(load(ctxptr, code.Length))
}
func storeIndent(ctxptr uintptr, code *encoder.Opcode, indent uintptr) {
store(ctxptr, code.Length, indent)
}
func appendArrayElemIndent(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
return appendIndent(ctx, b, code.Indent+1)
}
func appendMapKeyIndent(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
return appendIndent(ctx, b, code.Indent)
}
|
