forked from mirror/go-json
864 lines
18 KiB
Go
864 lines
18 KiB
Go
package encoder
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import (
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"fmt"
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"unsafe"
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"github.com/goccy/go-json/internal/runtime"
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)
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type Code interface {
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Kind() CodeKind
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ToOpcode(*compileContext) Opcodes
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}
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type AnonymousCode interface {
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ToAnonymousOpcode(*compileContext) Opcodes
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}
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type Opcodes []*Opcode
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func (o Opcodes) First() *Opcode {
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if len(o) == 0 {
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return nil
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}
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return o[0]
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}
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func (o Opcodes) Last() *Opcode {
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if len(o) == 0 {
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return nil
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}
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return o[len(o)-1]
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}
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func (o Opcodes) Add(codes ...*Opcode) Opcodes {
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return append(o, codes...)
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}
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type CodeKind int
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const (
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CodeKindInterface CodeKind = iota
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CodeKindPtr
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CodeKindInt
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CodeKindUint
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CodeKindFloat
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CodeKindString
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CodeKindBool
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CodeKindStruct
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CodeKindMap
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CodeKindSlice
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CodeKindArray
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CodeKindBytes
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CodeKindMarshalJSON
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CodeKindMarshalText
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CodeKindRecursive
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)
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type IntCode struct {
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typ *runtime.Type
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bitSize uint8
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isString bool
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isPtr bool
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}
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func (c *IntCode) Kind() CodeKind {
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return CodeKindInt
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}
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func (c *IntCode) ToOpcode(ctx *compileContext) Opcodes {
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var code *Opcode
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switch {
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case c.isPtr:
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code = newOpCode(ctx, OpIntPtr)
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case c.isString:
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code = newOpCode(ctx, OpIntString)
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default:
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code = newOpCode(ctx, OpInt)
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}
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code.NumBitSize = c.bitSize
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ctx.incIndex()
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return Opcodes{code}
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}
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type UintCode struct {
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typ *runtime.Type
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bitSize uint8
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isString bool
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isPtr bool
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}
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func (c *UintCode) Kind() CodeKind {
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return CodeKindUint
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}
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func (c *UintCode) ToOpcode(ctx *compileContext) Opcodes {
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var code *Opcode
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switch {
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case c.isPtr:
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code = newOpCode(ctx, OpUintPtr)
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case c.isString:
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code = newOpCode(ctx, OpUintString)
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default:
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code = newOpCode(ctx, OpUint)
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}
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code.NumBitSize = c.bitSize
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ctx.incIndex()
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return Opcodes{code}
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}
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type FloatCode struct {
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typ *runtime.Type
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bitSize uint8
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isString bool
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isPtr bool
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}
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func (c *FloatCode) Kind() CodeKind {
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return CodeKindFloat
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}
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func (c *FloatCode) ToOpcode(ctx *compileContext) Opcodes {
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var code *Opcode
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switch {
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case c.isPtr:
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switch c.bitSize {
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case 32:
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code = newOpCode(ctx, OpFloat32Ptr)
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default:
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code = newOpCode(ctx, OpFloat64Ptr)
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}
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default:
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switch c.bitSize {
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case 32:
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code = newOpCode(ctx, OpFloat32)
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default:
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code = newOpCode(ctx, OpFloat64)
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}
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}
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ctx.incIndex()
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return Opcodes{code}
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}
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type StringCode struct {
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typ *runtime.Type
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isString bool
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isPtr bool
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}
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func (c *StringCode) Kind() CodeKind {
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return CodeKindString
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}
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func (c *StringCode) ToOpcode(ctx *compileContext) Opcodes {
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isJsonNumberType := c.typ == runtime.Type2RType(jsonNumberType)
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var code *Opcode
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if c.isPtr {
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if isJsonNumberType {
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code = newOpCode(ctx, OpNumberPtr)
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} else {
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code = newOpCode(ctx, OpStringPtr)
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}
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} else {
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if isJsonNumberType {
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code = newOpCode(ctx, OpNumber)
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} else {
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code = newOpCode(ctx, OpString)
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}
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}
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ctx.incIndex()
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return Opcodes{code}
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}
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type BoolCode struct {
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typ *runtime.Type
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isString bool
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isPtr bool
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}
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func (c *BoolCode) Kind() CodeKind {
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return CodeKindBool
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}
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func (c *BoolCode) ToOpcode(ctx *compileContext) Opcodes {
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var code *Opcode
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switch {
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case c.isPtr:
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code = newOpCode(ctx, OpBoolPtr)
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default:
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code = newOpCode(ctx, OpBool)
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}
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ctx.incIndex()
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return Opcodes{code}
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}
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type BytesCode struct {
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typ *runtime.Type
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isPtr bool
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}
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func (c *BytesCode) Kind() CodeKind {
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return CodeKindBytes
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}
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func (c *BytesCode) ToOpcode(ctx *compileContext) Opcodes {
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var code *Opcode
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switch {
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case c.isPtr:
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code = newOpCode(ctx, OpBytesPtr)
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default:
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code = newOpCode(ctx, OpBytes)
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}
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ctx.incIndex()
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return Opcodes{code}
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}
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type SliceCode struct {
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typ *runtime.Type
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value Code
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}
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func (c *SliceCode) Kind() CodeKind {
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return CodeKindSlice
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}
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func (c *SliceCode) ToOpcode(ctx *compileContext) Opcodes {
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// header => opcode => elem => end
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// ^ |
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// |________|
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size := c.typ.Elem().Size()
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header := newSliceHeaderCode(ctx)
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ctx.incIndex()
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codes := c.value.ToOpcode(ctx.incIndent())
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codes.First().Flags |= IndirectFlags
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elemCode := newSliceElemCode(ctx.withType(c.typ.Elem()), header, size)
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ctx.incIndex()
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end := newOpCode(ctx, OpSliceEnd)
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ctx.incIndex()
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header.End = end
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header.Next = codes.First()
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codes.Last().Next = elemCode
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elemCode.Next = codes.First()
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elemCode.End = end
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return Opcodes{header}.Add(codes...).Add(elemCode).Add(end)
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}
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type ArrayCode struct {
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typ *runtime.Type
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value Code
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}
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func (c *ArrayCode) Kind() CodeKind {
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return CodeKindArray
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}
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func (c *ArrayCode) ToOpcode(ctx *compileContext) Opcodes {
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// header => opcode => elem => end
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// ^ |
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// |________|
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elem := c.typ.Elem()
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alen := c.typ.Len()
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size := elem.Size()
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header := newArrayHeaderCode(ctx, alen)
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ctx.incIndex()
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codes := c.value.ToOpcode(ctx.incIndent())
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codes.First().Flags |= IndirectFlags
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elemCode := newArrayElemCode(ctx.withType(elem), header, alen, size)
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ctx.incIndex()
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end := newOpCode(ctx, OpArrayEnd)
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ctx.incIndex()
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header.End = end
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header.Next = codes.First()
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codes.Last().Next = elemCode
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elemCode.Next = codes.First()
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elemCode.End = end
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return Opcodes{header}.Add(codes...).Add(elemCode).Add(end)
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}
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type MapCode struct {
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typ *runtime.Type
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key Code
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value Code
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}
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func (c *MapCode) Kind() CodeKind {
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return CodeKindMap
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}
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func (c *MapCode) ToOpcode(ctx *compileContext) Opcodes {
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// header => code => value => code => key => code => value => code => end
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// ^ |
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// |_______________________|
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header := newMapHeaderCode(ctx)
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ctx.incIndex()
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keyCodes := c.key.ToOpcode(ctx)
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value := newMapValueCode(ctx, header)
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ctx.incIndex()
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valueCodes := c.value.ToOpcode(ctx.incIndent())
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valueCodes.First().Flags |= IndirectFlags
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key := newMapKeyCode(ctx, header)
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ctx.incIndex()
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end := newMapEndCode(ctx, header)
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ctx.incIndex()
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header.Next = keyCodes.First()
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keyCodes.Last().Next = value
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value.Next = valueCodes.First()
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valueCodes.Last().Next = key
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key.Next = keyCodes.First()
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header.End = end
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key.End = end
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value.End = end
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return Opcodes{header}.Add(keyCodes...).Add(value).Add(valueCodes...).Add(key).Add(end)
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}
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type StructCode struct {
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typ *runtime.Type
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isPtr bool
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fields []*StructFieldCode
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disableIndirectConversion bool
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isIndirect bool
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isRecursive bool
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recursiveCodes Opcodes
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}
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func (c *StructCode) Kind() CodeKind {
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return CodeKindStruct
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}
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func (c *StructCode) lastFieldCode(field *StructFieldCode, firstField *Opcode) *Opcode {
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if field.isAnonymous {
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return c.lastAnonymousFieldCode(firstField)
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}
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lastField := firstField
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for lastField.NextField != nil {
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lastField = lastField.NextField
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}
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return lastField
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}
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func (c *StructCode) lastAnonymousFieldCode(firstField *Opcode) *Opcode {
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// firstField is special StructHead operation for anonymous structure.
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// So, StructHead's next operation is truely struct head operation.
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lastField := firstField.Next
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for lastField.NextField != nil {
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lastField = lastField.NextField
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}
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return lastField
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}
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func (c *StructCode) ToOpcode(ctx *compileContext) Opcodes {
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// header => code => structField => code => end
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// ^ |
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// |__________|
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if c.isRecursive {
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recursive := newRecursiveCode(ctx, &CompiledCode{})
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recursive.Type = c.typ
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ctx.incIndex()
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*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
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return Opcodes{recursive}
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}
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codes := Opcodes{}
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var prevField *Opcode
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ctx = ctx.incIndent()
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for idx, field := range c.fields {
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isFirstField := idx == 0
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isEndField := idx == len(c.fields)-1
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fieldCodes := field.ToOpcode(ctx, isFirstField, isEndField)
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for _, code := range fieldCodes {
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if c.isIndirect {
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code.Flags |= IndirectFlags
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}
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}
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firstField := fieldCodes.First()
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if len(codes) > 0 {
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codes.Last().Next = firstField
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firstField.Idx = codes.First().Idx
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}
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if prevField != nil {
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prevField.NextField = firstField
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}
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if isEndField {
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endField := fieldCodes.Last()
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if len(codes) > 0 {
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codes.First().End = endField
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} else if field.isAnonymous {
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firstField.End = endField
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lastField := c.lastAnonymousFieldCode(firstField)
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lastField.NextField = endField
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} else {
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firstField.End = endField
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}
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codes = codes.Add(fieldCodes...)
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break
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}
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prevField = c.lastFieldCode(field, firstField)
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codes = codes.Add(fieldCodes...)
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}
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if len(codes) == 0 {
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head := &Opcode{
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Op: OpStructHead,
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Idx: opcodeOffset(ctx.ptrIndex),
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Type: c.typ,
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DisplayIdx: ctx.opcodeIndex,
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Indent: ctx.indent,
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}
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ctx.incOpcodeIndex()
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end := &Opcode{
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Op: OpStructEnd,
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Idx: opcodeOffset(ctx.ptrIndex),
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DisplayIdx: ctx.opcodeIndex,
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Indent: ctx.indent,
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}
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head.NextField = end
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head.Next = end
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head.End = end
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codes = codes.Add(head, end)
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ctx.incIndex()
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}
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ctx = ctx.decIndent()
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ctx.structTypeToCodes[uintptr(unsafe.Pointer(c.typ))] = codes
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return codes
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}
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func (c *StructCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
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// header => code => structField => code => end
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// ^ |
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// |__________|
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if c.isRecursive {
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recursive := newRecursiveCode(ctx, &CompiledCode{})
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recursive.Type = c.typ
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ctx.incIndex()
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*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
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return Opcodes{recursive}
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}
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codes := Opcodes{}
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var prevField *Opcode
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for idx, field := range c.fields {
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isFirstField := idx == 0
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isEndField := idx == len(c.fields)-1
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fieldCodes := field.ToAnonymousOpcode(ctx, isFirstField, isEndField)
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for _, code := range fieldCodes {
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if c.isIndirect {
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code.Flags |= IndirectFlags
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}
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}
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firstField := fieldCodes.First()
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if len(codes) > 0 {
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codes.Last().Next = firstField
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firstField.Idx = codes.First().Idx
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}
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if prevField != nil {
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prevField.NextField = firstField
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}
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if isEndField {
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lastField := fieldCodes.Last()
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if len(codes) > 0 {
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codes.First().End = lastField
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} else {
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firstField.End = lastField
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}
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}
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prevField = firstField
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codes = codes.Add(fieldCodes...)
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}
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return codes
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}
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func (c *StructCode) removeFieldsByTags(tags runtime.StructTags) {
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fields := make([]*StructFieldCode, 0, len(c.fields))
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for _, field := range c.fields {
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if field.isAnonymous {
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structCode := field.getAnonymousStruct()
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if structCode != nil && !structCode.isRecursive {
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structCode.removeFieldsByTags(tags)
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if len(structCode.fields) > 0 {
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fields = append(fields, field)
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}
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continue
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}
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}
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if tags.ExistsKey(field.key) {
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continue
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}
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fields = append(fields, field)
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}
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c.fields = fields
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}
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func (c *StructCode) enableIndirect() {
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if c.isIndirect {
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return
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}
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c.isIndirect = true
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if len(c.fields) == 0 {
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return
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}
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structCode := c.fields[0].getStruct()
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if structCode == nil {
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return
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}
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structCode.enableIndirect()
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}
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type StructFieldCode struct {
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typ *runtime.Type
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key string
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tag *runtime.StructTag
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value Code
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offset uintptr
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isAnonymous bool
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isTaggedKey bool
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isNilableType bool
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isNilCheck bool
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isAddrForMarshaler bool
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isNextOpPtrType bool
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}
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func (c *StructFieldCode) getStruct() *StructCode {
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value := c.value
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ptr, ok := value.(*PtrCode)
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if ok {
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value = ptr.value
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}
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structCode, ok := value.(*StructCode)
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if ok {
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return structCode
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}
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return nil
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}
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func (c *StructFieldCode) getAnonymousStruct() *StructCode {
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if !c.isAnonymous {
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return nil
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}
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return c.getStruct()
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}
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func optimizeStructHeader(code *Opcode, tag *runtime.StructTag) OpType {
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headType := code.ToHeaderType(tag.IsString)
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if tag.IsOmitEmpty {
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headType = headType.HeadToOmitEmptyHead()
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}
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return headType
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}
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func optimizeStructField(code *Opcode, tag *runtime.StructTag) OpType {
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fieldType := code.ToFieldType(tag.IsString)
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if tag.IsOmitEmpty {
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fieldType = fieldType.FieldToOmitEmptyField()
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}
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return fieldType
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}
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func (c *StructFieldCode) headerOpcodes(ctx *compileContext, field *Opcode, valueCodes Opcodes) Opcodes {
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value := valueCodes.First()
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op := optimizeStructHeader(value, c.tag)
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field.Op = op
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field.NumBitSize = value.NumBitSize
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field.PtrNum = value.PtrNum
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fieldCodes := Opcodes{field}
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if op.IsMultipleOpHead() {
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field.Next = value
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fieldCodes = fieldCodes.Add(valueCodes...)
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} else {
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ctx.decIndex()
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}
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return fieldCodes
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}
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func (c *StructFieldCode) fieldOpcodes(ctx *compileContext, field *Opcode, valueCodes Opcodes) Opcodes {
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value := valueCodes.First()
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op := optimizeStructField(value, c.tag)
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field.Op = op
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field.NumBitSize = value.NumBitSize
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field.PtrNum = value.PtrNum
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fieldCodes := Opcodes{field}
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if op.IsMultipleOpField() {
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field.Next = value
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fieldCodes = fieldCodes.Add(valueCodes...)
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} else {
|
|
ctx.decIndex()
|
|
}
|
|
return fieldCodes
|
|
}
|
|
|
|
func (c *StructFieldCode) addStructEndCode(ctx *compileContext, codes Opcodes) Opcodes {
|
|
end := &Opcode{
|
|
Op: OpStructEnd,
|
|
Idx: opcodeOffset(ctx.ptrIndex),
|
|
DisplayIdx: ctx.opcodeIndex,
|
|
Indent: ctx.indent,
|
|
}
|
|
codes.Last().Next = end
|
|
codes.First().NextField = end
|
|
codes = codes.Add(end)
|
|
ctx.incOpcodeIndex()
|
|
return codes
|
|
}
|
|
|
|
func (c *StructFieldCode) structKey(ctx *compileContext) string {
|
|
if ctx.escapeKey {
|
|
rctx := &RuntimeContext{Option: &Option{Flag: HTMLEscapeOption}}
|
|
return fmt.Sprintf(`%s:`, string(AppendString(rctx, []byte{}, c.key)))
|
|
}
|
|
return fmt.Sprintf(`"%s":`, c.key)
|
|
}
|
|
|
|
func (c *StructFieldCode) flags() OpFlags {
|
|
var flags OpFlags
|
|
if c.isTaggedKey {
|
|
flags |= IsTaggedKeyFlags
|
|
}
|
|
if c.isNilableType {
|
|
flags |= IsNilableTypeFlags
|
|
}
|
|
if c.isNilCheck {
|
|
flags |= NilCheckFlags
|
|
}
|
|
if c.isAddrForMarshaler {
|
|
flags |= AddrForMarshalerFlags
|
|
}
|
|
if c.isNextOpPtrType {
|
|
flags |= IsNextOpPtrTypeFlags
|
|
}
|
|
if c.isAnonymous {
|
|
flags |= AnonymousKeyFlags
|
|
}
|
|
return flags
|
|
}
|
|
|
|
func (c *StructFieldCode) toValueOpcodes(ctx *compileContext) Opcodes {
|
|
if c.isAnonymous {
|
|
anonymCode, ok := c.value.(AnonymousCode)
|
|
if ok {
|
|
return anonymCode.ToAnonymousOpcode(ctx.withType(c.typ))
|
|
}
|
|
}
|
|
return c.value.ToOpcode(ctx.withType(c.typ))
|
|
}
|
|
|
|
func (c *StructFieldCode) ToOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
|
|
field := &Opcode{
|
|
Idx: opcodeOffset(ctx.ptrIndex),
|
|
Flags: c.flags(),
|
|
Key: c.structKey(ctx),
|
|
Offset: uint32(c.offset),
|
|
Type: c.typ,
|
|
DisplayIdx: ctx.opcodeIndex,
|
|
Indent: ctx.indent,
|
|
DisplayKey: c.key,
|
|
}
|
|
ctx.incIndex()
|
|
valueCodes := c.toValueOpcodes(ctx)
|
|
if isFirstField {
|
|
codes := c.headerOpcodes(ctx, field, valueCodes)
|
|
if isEndField {
|
|
codes = c.addStructEndCode(ctx, codes)
|
|
}
|
|
return codes
|
|
}
|
|
codes := c.fieldOpcodes(ctx, field, valueCodes)
|
|
if isEndField {
|
|
if isEnableStructEndOptimizationType(c.value.Kind()) {
|
|
field.Op = field.Op.FieldToEnd()
|
|
} else {
|
|
codes = c.addStructEndCode(ctx, codes)
|
|
}
|
|
}
|
|
return codes
|
|
}
|
|
|
|
func (c *StructFieldCode) ToAnonymousOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
|
|
field := &Opcode{
|
|
Idx: opcodeOffset(ctx.ptrIndex),
|
|
Flags: c.flags() | AnonymousHeadFlags,
|
|
Key: c.structKey(ctx),
|
|
Offset: uint32(c.offset),
|
|
Type: c.typ,
|
|
DisplayIdx: ctx.opcodeIndex,
|
|
Indent: ctx.indent,
|
|
DisplayKey: c.key,
|
|
}
|
|
ctx.incIndex()
|
|
valueCodes := c.toValueOpcodes(ctx)
|
|
if isFirstField {
|
|
return c.headerOpcodes(ctx, field, valueCodes)
|
|
}
|
|
return c.fieldOpcodes(ctx, field, valueCodes)
|
|
}
|
|
|
|
func isEnableStructEndOptimizationType(typ CodeKind) bool {
|
|
switch typ {
|
|
case CodeKindInt,
|
|
CodeKindUint,
|
|
CodeKindFloat,
|
|
CodeKindString,
|
|
CodeKindBool,
|
|
CodeKindBytes:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
type InterfaceCode struct {
|
|
typ *runtime.Type
|
|
isPtr bool
|
|
}
|
|
|
|
func (c *InterfaceCode) Kind() CodeKind {
|
|
return CodeKindInterface
|
|
}
|
|
|
|
func (c *InterfaceCode) ToOpcode(ctx *compileContext) Opcodes {
|
|
var code *Opcode
|
|
switch {
|
|
case c.isPtr:
|
|
code = newOpCode(ctx.withType(c.typ), OpInterfacePtr)
|
|
default:
|
|
code = newOpCode(ctx.withType(c.typ), OpInterface)
|
|
}
|
|
ctx.incIndex()
|
|
return Opcodes{code}
|
|
}
|
|
|
|
type MarshalJSONCode struct {
|
|
typ *runtime.Type
|
|
isAddrForMarshaler bool
|
|
isNilableType bool
|
|
isMarshalerContext bool
|
|
}
|
|
|
|
func (c *MarshalJSONCode) Kind() CodeKind {
|
|
return CodeKindMarshalJSON
|
|
}
|
|
|
|
func (c *MarshalJSONCode) ToOpcode(ctx *compileContext) Opcodes {
|
|
code := newOpCode(ctx.withType(c.typ), OpMarshalJSON)
|
|
if c.isAddrForMarshaler {
|
|
code.Flags |= AddrForMarshalerFlags
|
|
}
|
|
if c.isMarshalerContext {
|
|
code.Flags |= MarshalerContextFlags
|
|
}
|
|
if c.isNilableType {
|
|
code.Flags |= IsNilableTypeFlags
|
|
} else {
|
|
code.Flags &= ^IsNilableTypeFlags
|
|
}
|
|
ctx.incIndex()
|
|
return Opcodes{code}
|
|
}
|
|
|
|
type MarshalTextCode struct {
|
|
typ *runtime.Type
|
|
isAddrForMarshaler bool
|
|
isNilableType bool
|
|
}
|
|
|
|
func (c *MarshalTextCode) Kind() CodeKind {
|
|
return CodeKindMarshalText
|
|
}
|
|
|
|
func (c *MarshalTextCode) ToOpcode(ctx *compileContext) Opcodes {
|
|
code := newOpCode(ctx.withType(c.typ), OpMarshalText)
|
|
if c.isAddrForMarshaler {
|
|
code.Flags |= AddrForMarshalerFlags
|
|
}
|
|
if c.isNilableType {
|
|
code.Flags |= IsNilableTypeFlags
|
|
} else {
|
|
code.Flags &= ^IsNilableTypeFlags
|
|
}
|
|
ctx.incIndex()
|
|
return Opcodes{code}
|
|
}
|
|
|
|
type PtrCode struct {
|
|
typ *runtime.Type
|
|
value Code
|
|
ptrNum uint8
|
|
}
|
|
|
|
func (c *PtrCode) Kind() CodeKind {
|
|
return CodeKindPtr
|
|
}
|
|
|
|
func (c *PtrCode) ToOpcode(ctx *compileContext) Opcodes {
|
|
codes := c.value.ToOpcode(ctx.withType(c.typ.Elem()))
|
|
codes.First().Op = convertPtrOp(codes.First())
|
|
codes.First().PtrNum = c.ptrNum
|
|
return codes
|
|
}
|
|
|
|
func (c *PtrCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
|
|
var codes Opcodes
|
|
anonymCode, ok := c.value.(AnonymousCode)
|
|
if ok {
|
|
codes = anonymCode.ToAnonymousOpcode(ctx.withType(c.typ.Elem()))
|
|
} else {
|
|
codes = c.value.ToOpcode(ctx.withType(c.typ.Elem()))
|
|
}
|
|
codes.First().Op = convertPtrOp(codes.First())
|
|
codes.First().PtrNum = c.ptrNum
|
|
return codes
|
|
}
|
|
|
|
func convertPtrOp(code *Opcode) OpType {
|
|
ptrHeadOp := code.Op.HeadToPtrHead()
|
|
if code.Op != ptrHeadOp {
|
|
if code.PtrNum > 0 {
|
|
// ptr field and ptr head
|
|
code.PtrNum--
|
|
}
|
|
return ptrHeadOp
|
|
}
|
|
switch code.Op {
|
|
case OpInt:
|
|
return OpIntPtr
|
|
case OpUint:
|
|
return OpUintPtr
|
|
case OpFloat32:
|
|
return OpFloat32Ptr
|
|
case OpFloat64:
|
|
return OpFloat64Ptr
|
|
case OpString:
|
|
return OpStringPtr
|
|
case OpBool:
|
|
return OpBoolPtr
|
|
case OpBytes:
|
|
return OpBytesPtr
|
|
case OpNumber:
|
|
return OpNumberPtr
|
|
case OpArray:
|
|
return OpArrayPtr
|
|
case OpSlice:
|
|
return OpSlicePtr
|
|
case OpMap:
|
|
return OpMapPtr
|
|
case OpMarshalJSON:
|
|
return OpMarshalJSONPtr
|
|
case OpMarshalText:
|
|
return OpMarshalTextPtr
|
|
case OpInterface:
|
|
return OpInterfacePtr
|
|
case OpRecursive:
|
|
return OpRecursivePtr
|
|
}
|
|
return code.Op
|
|
}
|