forked from mirror/go-json
691 lines
17 KiB
Go
691 lines
17 KiB
Go
package encoder
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import (
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"reflect"
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"github.com/goccy/go-json/internal/errors"
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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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Type() CodeType2
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ToOpcode() []*Opcode
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}
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type CodeType2 int
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const (
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CodeTypeInterface CodeType2 = iota
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CodeTypePtr
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CodeTypeInt
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CodeTypeUint
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CodeTypeFloat
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CodeTypeString
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CodeTypeBool
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CodeTypeStruct
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CodeTypeMap
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CodeTypeSlice
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CodeTypeArray
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CodeTypeBytes
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CodeTypeMarshalJSON
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CodeTypeMarshalText
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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) Type() CodeType2 {
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return CodeTypeInt
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}
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func (c *IntCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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) Type() CodeType2 {
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return CodeTypeUint
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}
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func (c *UintCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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) Type() CodeType2 {
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return CodeTypeFloat
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}
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func (c *FloatCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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) Type() CodeType2 {
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return CodeTypeString
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}
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func (c *StringCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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) Type() CodeType2 {
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return CodeTypeBool
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}
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func (c *BoolCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type SliceCode struct {
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typ *runtime.Type
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}
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func (c *SliceCode) Type() CodeType2 {
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return CodeTypeSlice
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}
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func (c *SliceCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type ArrayCode struct {
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typ *runtime.Type
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}
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func (c *ArrayCode) Type() CodeType2 {
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return CodeTypeArray
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}
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func (c *ArrayCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type MapCode struct {
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typ *runtime.Type
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}
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func (c *MapCode) Type() CodeType2 {
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return CodeTypeMap
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}
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func (c *MapCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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) Type() CodeType2 {
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return CodeTypeBytes
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}
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func (c *BytesCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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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}
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func (c *StructCode) Type() CodeType2 {
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return CodeTypeStruct
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}
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func (c *StructCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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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 {
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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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type StructFieldCode struct {
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typ *runtime.Type
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key string
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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) getAnonymousStruct() *StructCode {
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if !c.isAnonymous {
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return nil
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}
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code, ok := c.value.(*StructCode)
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if ok {
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return code
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}
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return nil
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}
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type InterfaceCode struct {
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typ *runtime.Type
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isPtr bool
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}
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func (c *InterfaceCode) Type() CodeType2 {
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return CodeTypeInterface
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}
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func (c *InterfaceCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type MarshalJSONCode struct {
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typ *runtime.Type
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}
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func (c *MarshalJSONCode) Type() CodeType2 {
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return CodeTypeMarshalJSON
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}
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func (c *MarshalJSONCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type MarshalTextCode struct {
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typ *runtime.Type
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}
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func (c *MarshalTextCode) Type() CodeType2 {
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return CodeTypeMarshalText
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}
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func (c *MarshalTextCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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type PtrCode struct {
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typ *runtime.Type
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value Code
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}
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func (c *PtrCode) Type() CodeType2 {
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return CodeTypePtr
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}
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func (c *PtrCode) ToOpcode() []*Opcode {
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return []*Opcode{}
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}
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func type2code(ctx *compileContext) (Code, error) {
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typ := ctx.typ
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switch {
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case implementsMarshalJSON(typ):
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return compileMarshalJSON2(ctx)
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case implementsMarshalText(typ):
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return compileMarshalText2(ctx)
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}
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isPtr := false
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orgType := typ
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if typ.Kind() == reflect.Ptr {
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typ = typ.Elem()
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isPtr = true
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}
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switch {
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case implementsMarshalJSON(typ):
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return compileMarshalJSON2(ctx)
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case implementsMarshalText(typ):
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return compileMarshalText2(ctx)
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}
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switch typ.Kind() {
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case reflect.Slice:
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ctx := ctx.withType(typ)
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elem := typ.Elem()
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if elem.Kind() == reflect.Uint8 {
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p := runtime.PtrTo(elem)
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if !implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
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return compileBytes2(ctx, isPtr)
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}
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}
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return compileSlice2(ctx)
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case reflect.Map:
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if isPtr {
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return compilePtr2(ctx.withType(runtime.PtrTo(typ)))
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}
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return compileMap2(ctx.withType(typ))
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case reflect.Struct:
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return compileStruct2(ctx.withType(typ), isPtr)
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case reflect.Int:
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return compileInt2(ctx.withType(typ), isPtr)
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case reflect.Int8:
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return compileInt82(ctx.withType(typ), isPtr)
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case reflect.Int16:
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return compileInt162(ctx.withType(typ), isPtr)
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case reflect.Int32:
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return compileInt322(ctx.withType(typ), isPtr)
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case reflect.Int64:
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return compileInt642(ctx.withType(typ), isPtr)
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case reflect.Uint, reflect.Uintptr:
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return compileUint2(ctx.withType(typ), isPtr)
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case reflect.Uint8:
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return compileUint82(ctx.withType(typ), isPtr)
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case reflect.Uint16:
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return compileUint162(ctx.withType(typ), isPtr)
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case reflect.Uint32:
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return compileUint322(ctx.withType(typ), isPtr)
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case reflect.Uint64:
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return compileUint642(ctx.withType(typ), isPtr)
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case reflect.Float32:
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return compileFloat322(ctx.withType(typ), isPtr)
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case reflect.Float64:
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return compileFloat642(ctx.withType(typ), isPtr)
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case reflect.String:
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return compileString2(ctx.withType(typ), isPtr)
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case reflect.Bool:
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return compileBool2(ctx.withType(typ), isPtr)
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case reflect.Interface:
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return compileInterface2(ctx.withType(typ), isPtr)
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default:
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if isPtr && typ.Implements(marshalTextType) {
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typ = orgType
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}
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return type2codeWithPtr(ctx.withType(typ), isPtr)
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}
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}
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func type2codeWithPtr(ctx *compileContext, isPtr bool) (Code, error) {
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typ := ctx.typ
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switch {
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case implementsMarshalJSON(typ):
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return compileMarshalJSON2(ctx)
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case implementsMarshalText(typ):
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return compileMarshalText2(ctx)
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}
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switch typ.Kind() {
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case reflect.Ptr:
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return compilePtr2(ctx)
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case reflect.Slice:
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elem := typ.Elem()
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if elem.Kind() == reflect.Uint8 {
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p := runtime.PtrTo(elem)
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if !implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
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return compileBytes2(ctx, false)
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}
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}
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return compileSlice2(ctx)
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case reflect.Array:
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return compileArray2(ctx)
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case reflect.Map:
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return compileMap2(ctx)
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case reflect.Struct:
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return compileStruct2(ctx, isPtr)
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case reflect.Interface:
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return compileInterface2(ctx, false)
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case reflect.Int:
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return compileInt2(ctx, false)
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case reflect.Int8:
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return compileInt82(ctx, false)
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case reflect.Int16:
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return compileInt162(ctx, false)
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case reflect.Int32:
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return compileInt322(ctx, false)
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case reflect.Int64:
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return compileInt642(ctx, false)
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case reflect.Uint:
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return compileUint2(ctx, false)
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case reflect.Uint8:
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return compileUint82(ctx, false)
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case reflect.Uint16:
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return compileUint162(ctx, false)
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case reflect.Uint32:
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return compileUint322(ctx, false)
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case reflect.Uint64:
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return compileUint642(ctx, false)
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case reflect.Uintptr:
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return compileUint2(ctx, false)
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case reflect.Float32:
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return compileFloat322(ctx, false)
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case reflect.Float64:
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return compileFloat642(ctx, false)
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case reflect.String:
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return compileString2(ctx, false)
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case reflect.Bool:
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return compileBool2(ctx, false)
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}
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return nil, &errors.UnsupportedTypeError{Type: runtime.RType2Type(typ)}
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}
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func compileInt2(ctx *compileContext, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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func compileInt82(ctx *compileContext, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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func compileInt162(ctx *compileContext, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: ctx.typ, bitSize: 8, isPtr: isPtr}, nil
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}
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func compileInt322(ctx *compileContext, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: ctx.typ, bitSize: 16, isPtr: isPtr}, nil
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}
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func compileInt642(ctx *compileContext, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
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}
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func compileUint2(ctx *compileContext, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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func compileUint82(ctx *compileContext, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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func compileUint162(ctx *compileContext, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: ctx.typ, bitSize: 8, isPtr: isPtr}, nil
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}
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func compileUint322(ctx *compileContext, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: ctx.typ, bitSize: 16, isPtr: isPtr}, nil
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}
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func compileUint642(ctx *compileContext, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
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}
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func compileFloat322(ctx *compileContext, isPtr bool) (*FloatCode, error) {
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return &FloatCode{typ: ctx.typ, bitSize: 32, isPtr: isPtr}, nil
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}
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func compileFloat642(ctx *compileContext, isPtr bool) (*FloatCode, error) {
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return &FloatCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
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}
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func compileString2(ctx *compileContext, isString bool) (*StringCode, error) {
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return &StringCode{typ: ctx.typ, isString: isString}, nil
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}
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func compileBool2(ctx *compileContext, isString bool) (*BoolCode, error) {
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return &BoolCode{typ: ctx.typ, isString: isString}, nil
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}
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func compileSlice2(ctx *compileContext) (*SliceCode, error) {
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return &SliceCode{typ: ctx.typ}, nil
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}
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func compileArray2(ctx *compileContext) (*ArrayCode, error) {
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return &ArrayCode{typ: ctx.typ}, nil
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}
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func compileMap2(ctx *compileContext) (*MapCode, error) {
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return &MapCode{typ: ctx.typ}, nil
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}
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func compileBytes2(ctx *compileContext, isPtr bool) (*BytesCode, error) {
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return &BytesCode{typ: ctx.typ, isPtr: isPtr}, nil
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}
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func compileInterface2(ctx *compileContext, isPtr bool) (*InterfaceCode, error) {
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return &InterfaceCode{typ: ctx.typ, isPtr: isPtr}, nil
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}
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func compileMarshalJSON2(ctx *compileContext) (*MarshalJSONCode, error) {
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return &MarshalJSONCode{typ: ctx.typ}, nil
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}
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func compileMarshalText2(ctx *compileContext) (*MarshalTextCode, error) {
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return &MarshalTextCode{typ: ctx.typ}, nil
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}
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func compilePtr2(ctx *compileContext) (*PtrCode, error) {
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code, err := type2codeWithPtr(ctx.withType(ctx.typ.Elem()), true)
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if err != nil {
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return nil, err
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}
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return &PtrCode{typ: ctx.typ, value: code}, nil
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}
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func compileStruct2(ctx *compileContext, isPtr bool) (*StructCode, error) {
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//typeptr := uintptr(unsafe.Pointer(typ))
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//compiled := &CompiledCode{}
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//ctx.structTypeToCompiledCode[typeptr] = compiled
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// header => code => structField => code => end
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// ^ |
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// |__________|
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typ := ctx.typ
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fieldNum := typ.NumField()
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//indirect := runtime.IfaceIndir(typ)
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tags := typeToStructTags(typ)
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code := &StructCode{typ: typ, isPtr: isPtr}
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fields := []*StructFieldCode{}
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for i, tag := range tags {
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isOnlyOneFirstField := i == 0 && fieldNum == 1
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field, err := code.compileStructField(ctx, tag, isPtr, isOnlyOneFirstField)
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if err != nil {
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return nil, err
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}
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if field.isAnonymous {
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structCode := field.getAnonymousStruct()
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if structCode != nil {
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structCode.removeFieldsByTags(tags)
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}
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}
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fields = append(fields, field)
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}
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fieldMap := getFieldMap(fields)
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duplicatedFieldMap := getDuplicatedFieldMap(fieldMap)
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code.fields = filteredDuplicatedFields(fields, duplicatedFieldMap)
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return code, nil
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}
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func getFieldMap(fields []*StructFieldCode) map[string][]*StructFieldCode {
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fieldMap := map[string][]*StructFieldCode{}
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for _, field := range fields {
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if field.isAnonymous {
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structCode := field.getAnonymousStruct()
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if structCode != nil {
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for k, v := range getFieldMap(structCode.fields) {
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fieldMap[k] = append(fieldMap[k], v...)
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}
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continue
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}
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}
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fieldMap[field.key] = append(fieldMap[field.key], field)
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}
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return fieldMap
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}
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func getDuplicatedFieldMap(fieldMap map[string][]*StructFieldCode) map[*StructFieldCode]struct{} {
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duplicatedFieldMap := map[*StructFieldCode]struct{}{}
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for _, fields := range fieldMap {
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if len(fields) == 1 {
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continue
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}
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if isTaggedKeyOnly(fields) {
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for _, field := range fields {
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if field.isTaggedKey {
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continue
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}
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duplicatedFieldMap[field] = struct{}{}
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}
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} else {
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for _, field := range fields {
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duplicatedFieldMap[field] = struct{}{}
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}
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}
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}
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return duplicatedFieldMap
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}
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func filteredDuplicatedFields(fields []*StructFieldCode, duplicatedFieldMap map[*StructFieldCode]struct{}) []*StructFieldCode {
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filteredFields := make([]*StructFieldCode, 0, len(fields))
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for _, field := range fields {
|
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if field.isAnonymous {
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structCode := field.getAnonymousStruct()
|
|
if structCode != nil {
|
|
structCode.fields = filteredDuplicatedFields(structCode.fields, duplicatedFieldMap)
|
|
if len(structCode.fields) > 0 {
|
|
filteredFields = append(filteredFields, field)
|
|
}
|
|
continue
|
|
}
|
|
}
|
|
if _, exists := duplicatedFieldMap[field]; exists {
|
|
continue
|
|
}
|
|
filteredFields = append(filteredFields, field)
|
|
}
|
|
return filteredFields
|
|
}
|
|
|
|
func isTaggedKeyOnly(fields []*StructFieldCode) bool {
|
|
var taggedKeyFieldCount int
|
|
for _, field := range fields {
|
|
if field.isTaggedKey {
|
|
taggedKeyFieldCount++
|
|
}
|
|
}
|
|
return taggedKeyFieldCount == 1
|
|
}
|
|
|
|
func typeToStructTags(typ *runtime.Type) runtime.StructTags {
|
|
tags := runtime.StructTags{}
|
|
fieldNum := typ.NumField()
|
|
for i := 0; i < fieldNum; i++ {
|
|
field := typ.Field(i)
|
|
if runtime.IsIgnoredStructField(field) {
|
|
continue
|
|
}
|
|
tags = append(tags, runtime.StructTagFromField(field))
|
|
}
|
|
return tags
|
|
}
|
|
|
|
// *struct{ field T } => struct { field *T }
|
|
// func (*T) MarshalJSON() ([]byte, error)
|
|
func isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
|
|
return isIndirectSpecialCase && !isNilableType(typ) && isPtrMarshalJSONType(typ)
|
|
}
|
|
|
|
// *struct{ field T } => struct { field *T }
|
|
// func (*T) MarshalText() ([]byte, error)
|
|
func isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
|
|
return isIndirectSpecialCase && !isNilableType(typ) && isPtrMarshalTextType(typ)
|
|
}
|
|
|
|
func (c *StructCode) compileStructField(ctx *compileContext, tag *runtime.StructTag, isPtr, isOnlyOneFirstField bool) (*StructFieldCode, error) {
|
|
field := tag.Field
|
|
fieldType := runtime.Type2RType(field.Type)
|
|
isIndirectSpecialCase := isPtr && isOnlyOneFirstField
|
|
fieldCode := &StructFieldCode{
|
|
typ: fieldType,
|
|
key: tag.Key,
|
|
offset: field.Offset,
|
|
isAnonymous: field.Anonymous && !tag.IsTaggedKey,
|
|
isTaggedKey: tag.IsTaggedKey,
|
|
isNilableType: isNilableType(fieldType),
|
|
isNilCheck: true,
|
|
}
|
|
switch {
|
|
case isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(fieldType, isIndirectSpecialCase):
|
|
code, err := compileMarshalJSON2(ctx.withType(fieldType))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
c.disableIndirectConversion = true
|
|
case isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(fieldType, isIndirectSpecialCase):
|
|
code, err := compileMarshalText2(ctx.withType(fieldType))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
c.disableIndirectConversion = true
|
|
case isPtr && isPtrMarshalJSONType(fieldType):
|
|
// *struct{ field T }
|
|
// func (*T) MarshalJSON() ([]byte, error)
|
|
code, err := compileMarshalJSON2(ctx.withType(fieldType))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
case isPtr && isPtrMarshalTextType(fieldType):
|
|
// *struct{ field T }
|
|
// func (*T) MarshalText() ([]byte, error)
|
|
code, err := compileMarshalText2(ctx.withType(fieldType))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
default:
|
|
code, err := type2codeWithPtr(ctx.withType(fieldType), isPtr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
switch code.Type() {
|
|
case CodeTypePtr, CodeTypeInterface:
|
|
fieldCode.isNextOpPtrType = true
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isNilCheck = false
|
|
}
|
|
return fieldCode, nil
|
|
}
|