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path: root/vendor/github.com/goccy/go-json/internal/encoder/opcode.go
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Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/encoder/opcode.go')
-rw-r--r--vendor/github.com/goccy/go-json/internal/encoder/opcode.go669
1 files changed, 669 insertions, 0 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/encoder/opcode.go b/vendor/github.com/goccy/go-json/internal/encoder/opcode.go
new file mode 100644
index 000000000..05fc3ce04
--- /dev/null
+++ b/vendor/github.com/goccy/go-json/internal/encoder/opcode.go
@@ -0,0 +1,669 @@
+package encoder
+
+import (
+ "fmt"
+ "strings"
+ "unsafe"
+
+ "github.com/goccy/go-json/internal/runtime"
+)
+
+const uintptrSize = 4 << (^uintptr(0) >> 63)
+
+type OpFlags uint16
+
+const (
+ AnonymousHeadFlags OpFlags = 1 << 0
+ AnonymousKeyFlags OpFlags = 1 << 1
+ IndirectFlags OpFlags = 1 << 2
+ IsTaggedKeyFlags OpFlags = 1 << 3
+ NilCheckFlags OpFlags = 1 << 4
+ AddrForMarshalerFlags OpFlags = 1 << 5
+ IsNextOpPtrTypeFlags OpFlags = 1 << 6
+ IsNilableTypeFlags OpFlags = 1 << 7
+ MarshalerContextFlags OpFlags = 1 << 8
+ NonEmptyInterfaceFlags OpFlags = 1 << 9
+)
+
+type Opcode struct {
+ Op OpType // operation type
+ Idx uint32 // offset to access ptr
+ Next *Opcode // next opcode
+ End *Opcode // array/slice/struct/map end
+ NextField *Opcode // next struct field
+ Key string // struct field key
+ Offset uint32 // offset size from struct header
+ PtrNum uint8 // pointer number: e.g. double pointer is 2.
+ NumBitSize uint8
+ Flags OpFlags
+
+ Type *runtime.Type // go type
+ Jmp *CompiledCode // for recursive call
+ FieldQuery *FieldQuery // field query for Interface / MarshalJSON / MarshalText
+ ElemIdx uint32 // offset to access array/slice elem
+ Length uint32 // offset to access slice length or array length
+ Indent uint32 // indent number
+ Size uint32 // array/slice elem size
+ DisplayIdx uint32 // opcode index
+ DisplayKey string // key text to display
+}
+
+func (c *Opcode) Validate() error {
+ var prevIdx uint32
+ for code := c; !code.IsEnd(); {
+ if prevIdx != 0 {
+ if code.DisplayIdx != prevIdx+1 {
+ return fmt.Errorf(
+ "invalid index. previous display index is %d but next is %d. dump = %s",
+ prevIdx, code.DisplayIdx, c.Dump(),
+ )
+ }
+ }
+ prevIdx = code.DisplayIdx
+ code = code.IterNext()
+ }
+ return nil
+}
+
+func (c *Opcode) IterNext() *Opcode {
+ if c == nil {
+ return nil
+ }
+ switch c.Op.CodeType() {
+ case CodeArrayElem, CodeSliceElem, CodeMapKey:
+ return c.End
+ default:
+ return c.Next
+ }
+}
+
+func (c *Opcode) IsEnd() bool {
+ if c == nil {
+ return true
+ }
+ return c.Op == OpEnd || c.Op == OpInterfaceEnd || c.Op == OpRecursiveEnd
+}
+
+func (c *Opcode) MaxIdx() uint32 {
+ max := uint32(0)
+ for _, value := range []uint32{
+ c.Idx,
+ c.ElemIdx,
+ c.Length,
+ c.Size,
+ } {
+ if max < value {
+ max = value
+ }
+ }
+ return max
+}
+
+func (c *Opcode) ToHeaderType(isString bool) OpType {
+ switch c.Op {
+ case OpInt:
+ if isString {
+ return OpStructHeadIntString
+ }
+ return OpStructHeadInt
+ case OpIntPtr:
+ if isString {
+ return OpStructHeadIntPtrString
+ }
+ return OpStructHeadIntPtr
+ case OpUint:
+ if isString {
+ return OpStructHeadUintString
+ }
+ return OpStructHeadUint
+ case OpUintPtr:
+ if isString {
+ return OpStructHeadUintPtrString
+ }
+ return OpStructHeadUintPtr
+ case OpFloat32:
+ if isString {
+ return OpStructHeadFloat32String
+ }
+ return OpStructHeadFloat32
+ case OpFloat32Ptr:
+ if isString {
+ return OpStructHeadFloat32PtrString
+ }
+ return OpStructHeadFloat32Ptr
+ case OpFloat64:
+ if isString {
+ return OpStructHeadFloat64String
+ }
+ return OpStructHeadFloat64
+ case OpFloat64Ptr:
+ if isString {
+ return OpStructHeadFloat64PtrString
+ }
+ return OpStructHeadFloat64Ptr
+ case OpString:
+ if isString {
+ return OpStructHeadStringString
+ }
+ return OpStructHeadString
+ case OpStringPtr:
+ if isString {
+ return OpStructHeadStringPtrString
+ }
+ return OpStructHeadStringPtr
+ case OpNumber:
+ if isString {
+ return OpStructHeadNumberString
+ }
+ return OpStructHeadNumber
+ case OpNumberPtr:
+ if isString {
+ return OpStructHeadNumberPtrString
+ }
+ return OpStructHeadNumberPtr
+ case OpBool:
+ if isString {
+ return OpStructHeadBoolString
+ }
+ return OpStructHeadBool
+ case OpBoolPtr:
+ if isString {
+ return OpStructHeadBoolPtrString
+ }
+ return OpStructHeadBoolPtr
+ case OpBytes:
+ return OpStructHeadBytes
+ case OpBytesPtr:
+ return OpStructHeadBytesPtr
+ case OpMap:
+ return OpStructHeadMap
+ case OpMapPtr:
+ c.Op = OpMap
+ return OpStructHeadMapPtr
+ case OpArray:
+ return OpStructHeadArray
+ case OpArrayPtr:
+ c.Op = OpArray
+ return OpStructHeadArrayPtr
+ case OpSlice:
+ return OpStructHeadSlice
+ case OpSlicePtr:
+ c.Op = OpSlice
+ return OpStructHeadSlicePtr
+ case OpMarshalJSON:
+ return OpStructHeadMarshalJSON
+ case OpMarshalJSONPtr:
+ return OpStructHeadMarshalJSONPtr
+ case OpMarshalText:
+ return OpStructHeadMarshalText
+ case OpMarshalTextPtr:
+ return OpStructHeadMarshalTextPtr
+ }
+ return OpStructHead
+}
+
+func (c *Opcode) ToFieldType(isString bool) OpType {
+ switch c.Op {
+ case OpInt:
+ if isString {
+ return OpStructFieldIntString
+ }
+ return OpStructFieldInt
+ case OpIntPtr:
+ if isString {
+ return OpStructFieldIntPtrString
+ }
+ return OpStructFieldIntPtr
+ case OpUint:
+ if isString {
+ return OpStructFieldUintString
+ }
+ return OpStructFieldUint
+ case OpUintPtr:
+ if isString {
+ return OpStructFieldUintPtrString
+ }
+ return OpStructFieldUintPtr
+ case OpFloat32:
+ if isString {
+ return OpStructFieldFloat32String
+ }
+ return OpStructFieldFloat32
+ case OpFloat32Ptr:
+ if isString {
+ return OpStructFieldFloat32PtrString
+ }
+ return OpStructFieldFloat32Ptr
+ case OpFloat64:
+ if isString {
+ return OpStructFieldFloat64String
+ }
+ return OpStructFieldFloat64
+ case OpFloat64Ptr:
+ if isString {
+ return OpStructFieldFloat64PtrString
+ }
+ return OpStructFieldFloat64Ptr
+ case OpString:
+ if isString {
+ return OpStructFieldStringString
+ }
+ return OpStructFieldString
+ case OpStringPtr:
+ if isString {
+ return OpStructFieldStringPtrString
+ }
+ return OpStructFieldStringPtr
+ case OpNumber:
+ if isString {
+ return OpStructFieldNumberString
+ }
+ return OpStructFieldNumber
+ case OpNumberPtr:
+ if isString {
+ return OpStructFieldNumberPtrString
+ }
+ return OpStructFieldNumberPtr
+ case OpBool:
+ if isString {
+ return OpStructFieldBoolString
+ }
+ return OpStructFieldBool
+ case OpBoolPtr:
+ if isString {
+ return OpStructFieldBoolPtrString
+ }
+ return OpStructFieldBoolPtr
+ case OpBytes:
+ return OpStructFieldBytes
+ case OpBytesPtr:
+ return OpStructFieldBytesPtr
+ case OpMap:
+ return OpStructFieldMap
+ case OpMapPtr:
+ c.Op = OpMap
+ return OpStructFieldMapPtr
+ case OpArray:
+ return OpStructFieldArray
+ case OpArrayPtr:
+ c.Op = OpArray
+ return OpStructFieldArrayPtr
+ case OpSlice:
+ return OpStructFieldSlice
+ case OpSlicePtr:
+ c.Op = OpSlice
+ return OpStructFieldSlicePtr
+ case OpMarshalJSON:
+ return OpStructFieldMarshalJSON
+ case OpMarshalJSONPtr:
+ return OpStructFieldMarshalJSONPtr
+ case OpMarshalText:
+ return OpStructFieldMarshalText
+ case OpMarshalTextPtr:
+ return OpStructFieldMarshalTextPtr
+ }
+ return OpStructField
+}
+
+func newOpCode(ctx *compileContext, typ *runtime.Type, op OpType) *Opcode {
+ return newOpCodeWithNext(ctx, typ, op, newEndOp(ctx, typ))
+}
+
+func opcodeOffset(idx int) uint32 {
+ return uint32(idx) * uintptrSize
+}
+
+func getCodeAddrByIdx(head *Opcode, idx uint32) *Opcode {
+ addr := uintptr(unsafe.Pointer(head)) + uintptr(idx)*unsafe.Sizeof(Opcode{})
+ return *(**Opcode)(unsafe.Pointer(&addr))
+}
+
+func copyOpcode(code *Opcode) *Opcode {
+ codeNum := ToEndCode(code).DisplayIdx + 1
+ codeSlice := make([]Opcode, codeNum)
+ head := (*Opcode)((*runtime.SliceHeader)(unsafe.Pointer(&codeSlice)).Data)
+ ptr := head
+ c := code
+ for {
+ *ptr = Opcode{
+ Op: c.Op,
+ Key: c.Key,
+ PtrNum: c.PtrNum,
+ NumBitSize: c.NumBitSize,
+ Flags: c.Flags,
+ Idx: c.Idx,
+ Offset: c.Offset,
+ Type: c.Type,
+ FieldQuery: c.FieldQuery,
+ DisplayIdx: c.DisplayIdx,
+ DisplayKey: c.DisplayKey,
+ ElemIdx: c.ElemIdx,
+ Length: c.Length,
+ Size: c.Size,
+ Indent: c.Indent,
+ Jmp: c.Jmp,
+ }
+ if c.End != nil {
+ ptr.End = getCodeAddrByIdx(head, c.End.DisplayIdx)
+ }
+ if c.NextField != nil {
+ ptr.NextField = getCodeAddrByIdx(head, c.NextField.DisplayIdx)
+ }
+ if c.Next != nil {
+ ptr.Next = getCodeAddrByIdx(head, c.Next.DisplayIdx)
+ }
+ if c.IsEnd() {
+ break
+ }
+ ptr = getCodeAddrByIdx(head, c.DisplayIdx+1)
+ c = c.IterNext()
+ }
+ return head
+}
+
+func setTotalLengthToInterfaceOp(code *Opcode) {
+ for c := code; !c.IsEnd(); {
+ if c.Op == OpInterface || c.Op == OpInterfacePtr {
+ c.Length = uint32(code.TotalLength())
+ }
+ c = c.IterNext()
+ }
+}
+
+func ToEndCode(code *Opcode) *Opcode {
+ c := code
+ for !c.IsEnd() {
+ c = c.IterNext()
+ }
+ return c
+}
+
+func copyToInterfaceOpcode(code *Opcode) *Opcode {
+ copied := copyOpcode(code)
+ c := copied
+ c = ToEndCode(c)
+ c.Idx += uintptrSize
+ c.ElemIdx = c.Idx + uintptrSize
+ c.Length = c.Idx + 2*uintptrSize
+ c.Op = OpInterfaceEnd
+ return copied
+}
+
+func newOpCodeWithNext(ctx *compileContext, typ *runtime.Type, op OpType, next *Opcode) *Opcode {
+ return &Opcode{
+ Op: op,
+ Idx: opcodeOffset(ctx.ptrIndex),
+ Next: next,
+ Type: typ,
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ }
+}
+
+func newEndOp(ctx *compileContext, typ *runtime.Type) *Opcode {
+ return newOpCodeWithNext(ctx, typ, OpEnd, nil)
+}
+
+func (c *Opcode) TotalLength() int {
+ var idx int
+ code := c
+ for !code.IsEnd() {
+ maxIdx := int(code.MaxIdx() / uintptrSize)
+ if idx < maxIdx {
+ idx = maxIdx
+ }
+ if code.Op == OpRecursiveEnd {
+ break
+ }
+ code = code.IterNext()
+ }
+ maxIdx := int(code.MaxIdx() / uintptrSize)
+ if idx < maxIdx {
+ idx = maxIdx
+ }
+ return idx + 1
+}
+
+func (c *Opcode) dumpHead(code *Opcode) string {
+ var length uint32
+ if code.Op.CodeType() == CodeArrayHead {
+ length = code.Length
+ } else {
+ length = code.Length / uintptrSize
+ }
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ code.ElemIdx/uintptrSize,
+ length,
+ )
+}
+
+func (c *Opcode) dumpMapHead(code *Opcode) string {
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ )
+}
+
+func (c *Opcode) dumpMapEnd(code *Opcode) string {
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ )
+}
+
+func (c *Opcode) dumpElem(code *Opcode) string {
+ var length uint32
+ if code.Op.CodeType() == CodeArrayElem {
+ length = code.Length
+ } else {
+ length = code.Length / uintptrSize
+ }
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d][elemIdx:%d][length:%d][size:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ code.ElemIdx/uintptrSize,
+ length,
+ code.Size,
+ )
+}
+
+func (c *Opcode) dumpField(code *Opcode) string {
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d][key:%s][offset:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ code.DisplayKey,
+ code.Offset,
+ )
+}
+
+func (c *Opcode) dumpKey(code *Opcode) string {
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ )
+}
+
+func (c *Opcode) dumpValue(code *Opcode) string {
+ return fmt.Sprintf(
+ `[%03d]%s%s ([idx:%d])`,
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ )
+}
+
+func (c *Opcode) Dump() string {
+ codes := []string{}
+ for code := c; !code.IsEnd(); {
+ switch code.Op.CodeType() {
+ case CodeSliceHead:
+ codes = append(codes, c.dumpHead(code))
+ code = code.Next
+ case CodeMapHead:
+ codes = append(codes, c.dumpMapHead(code))
+ code = code.Next
+ case CodeArrayElem, CodeSliceElem:
+ codes = append(codes, c.dumpElem(code))
+ code = code.End
+ case CodeMapKey:
+ codes = append(codes, c.dumpKey(code))
+ code = code.End
+ case CodeMapValue:
+ codes = append(codes, c.dumpValue(code))
+ code = code.Next
+ case CodeMapEnd:
+ codes = append(codes, c.dumpMapEnd(code))
+ code = code.Next
+ case CodeStructField:
+ codes = append(codes, c.dumpField(code))
+ code = code.Next
+ case CodeStructEnd:
+ codes = append(codes, c.dumpField(code))
+ code = code.Next
+ default:
+ codes = append(codes, fmt.Sprintf(
+ "[%03d]%s%s ([idx:%d])",
+ code.DisplayIdx,
+ strings.Repeat("-", int(code.Indent)),
+ code.Op,
+ code.Idx/uintptrSize,
+ ))
+ code = code.Next
+ }
+ }
+ return strings.Join(codes, "\n")
+}
+
+func newSliceHeaderCode(ctx *compileContext, typ *runtime.Type) *Opcode {
+ idx := opcodeOffset(ctx.ptrIndex)
+ ctx.incPtrIndex()
+ elemIdx := opcodeOffset(ctx.ptrIndex)
+ ctx.incPtrIndex()
+ length := opcodeOffset(ctx.ptrIndex)
+ return &Opcode{
+ Op: OpSlice,
+ Type: typ,
+ Idx: idx,
+ DisplayIdx: ctx.opcodeIndex,
+ ElemIdx: elemIdx,
+ Length: length,
+ Indent: ctx.indent,
+ }
+}
+
+func newSliceElemCode(ctx *compileContext, typ *runtime.Type, head *Opcode, size uintptr) *Opcode {
+ return &Opcode{
+ Op: OpSliceElem,
+ Type: typ,
+ Idx: head.Idx,
+ DisplayIdx: ctx.opcodeIndex,
+ ElemIdx: head.ElemIdx,
+ Length: head.Length,
+ Indent: ctx.indent,
+ Size: uint32(size),
+ }
+}
+
+func newArrayHeaderCode(ctx *compileContext, typ *runtime.Type, alen int) *Opcode {
+ idx := opcodeOffset(ctx.ptrIndex)
+ ctx.incPtrIndex()
+ elemIdx := opcodeOffset(ctx.ptrIndex)
+ return &Opcode{
+ Op: OpArray,
+ Type: typ,
+ Idx: idx,
+ DisplayIdx: ctx.opcodeIndex,
+ ElemIdx: elemIdx,
+ Indent: ctx.indent,
+ Length: uint32(alen),
+ }
+}
+
+func newArrayElemCode(ctx *compileContext, typ *runtime.Type, head *Opcode, length int, size uintptr) *Opcode {
+ return &Opcode{
+ Op: OpArrayElem,
+ Type: typ,
+ Idx: head.Idx,
+ DisplayIdx: ctx.opcodeIndex,
+ ElemIdx: head.ElemIdx,
+ Length: uint32(length),
+ Indent: ctx.indent,
+ Size: uint32(size),
+ }
+}
+
+func newMapHeaderCode(ctx *compileContext, typ *runtime.Type) *Opcode {
+ idx := opcodeOffset(ctx.ptrIndex)
+ ctx.incPtrIndex()
+ return &Opcode{
+ Op: OpMap,
+ Type: typ,
+ Idx: idx,
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ }
+}
+
+func newMapKeyCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
+ return &Opcode{
+ Op: OpMapKey,
+ Type: typ,
+ Idx: head.Idx,
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ }
+}
+
+func newMapValueCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
+ return &Opcode{
+ Op: OpMapValue,
+ Type: typ,
+ Idx: head.Idx,
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ }
+}
+
+func newMapEndCode(ctx *compileContext, typ *runtime.Type, head *Opcode) *Opcode {
+ return &Opcode{
+ Op: OpMapEnd,
+ Type: typ,
+ Idx: head.Idx,
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ Next: newEndOp(ctx, typ),
+ }
+}
+
+func newRecursiveCode(ctx *compileContext, typ *runtime.Type, jmp *CompiledCode) *Opcode {
+ return &Opcode{
+ Op: OpRecursive,
+ Type: typ,
+ Idx: opcodeOffset(ctx.ptrIndex),
+ Next: newEndOp(ctx, typ),
+ DisplayIdx: ctx.opcodeIndex,
+ Indent: ctx.indent,
+ Jmp: jmp,
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-12 23:27:03 +0000