936 lines
26 KiB
Go
936 lines
26 KiB
Go
package encoder
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import (
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"context"
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"encoding"
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"encoding/json"
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"reflect"
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"sync/atomic"
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"unsafe"
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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 marshalerContext interface {
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MarshalJSON(context.Context) ([]byte, error)
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}
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var (
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marshalJSONType = reflect.TypeOf((*json.Marshaler)(nil)).Elem()
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marshalJSONContextType = reflect.TypeOf((*marshalerContext)(nil)).Elem()
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marshalTextType = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()
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jsonNumberType = reflect.TypeOf(json.Number(""))
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cachedOpcodeSets []*OpcodeSet
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cachedOpcodeMap unsafe.Pointer // map[uintptr]*OpcodeSet
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typeAddr *runtime.TypeAddr
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)
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func init() {
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typeAddr = runtime.AnalyzeTypeAddr()
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if typeAddr == nil {
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typeAddr = &runtime.TypeAddr{}
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}
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cachedOpcodeSets = make([]*OpcodeSet, typeAddr.AddrRange>>typeAddr.AddrShift+1)
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}
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func loadOpcodeMap() map[uintptr]*OpcodeSet {
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p := atomic.LoadPointer(&cachedOpcodeMap)
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return *(*map[uintptr]*OpcodeSet)(unsafe.Pointer(&p))
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}
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func storeOpcodeSet(typ uintptr, set *OpcodeSet, m map[uintptr]*OpcodeSet) {
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newOpcodeMap := make(map[uintptr]*OpcodeSet, len(m)+1)
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newOpcodeMap[typ] = set
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for k, v := range m {
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newOpcodeMap[k] = v
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}
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atomic.StorePointer(&cachedOpcodeMap, *(*unsafe.Pointer)(unsafe.Pointer(&newOpcodeMap)))
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}
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func compileToGetCodeSetSlowPath(typeptr uintptr) (*OpcodeSet, error) {
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opcodeMap := loadOpcodeMap()
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if codeSet, exists := opcodeMap[typeptr]; exists {
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return codeSet, nil
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}
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codeSet, err := newCompiler().compile(typeptr)
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if err != nil {
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return nil, err
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}
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storeOpcodeSet(typeptr, codeSet, opcodeMap)
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return codeSet, nil
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}
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func getFilteredCodeSetIfNeeded(ctx *RuntimeContext, codeSet *OpcodeSet) (*OpcodeSet, error) {
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if (ctx.Option.Flag & ContextOption) == 0 {
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return codeSet, nil
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}
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query := FieldQueryFromContext(ctx.Option.Context)
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if query == nil {
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return codeSet, nil
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}
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ctx.Option.Flag |= FieldQueryOption
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cacheCodeSet := codeSet.getQueryCache(query.Hash())
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if cacheCodeSet != nil {
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return cacheCodeSet, nil
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}
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queryCodeSet, err := newCompiler().codeToOpcodeSet(codeSet.Type, codeSet.Code.Filter(query))
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if err != nil {
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return nil, err
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}
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codeSet.setQueryCache(query.Hash(), queryCodeSet)
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return queryCodeSet, nil
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}
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type Compiler struct {
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structTypeToCode map[uintptr]*StructCode
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}
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func newCompiler() *Compiler {
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return &Compiler{
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structTypeToCode: map[uintptr]*StructCode{},
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}
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}
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func (c *Compiler) compile(typeptr uintptr) (*OpcodeSet, error) {
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// noescape trick for header.typ ( reflect.*rtype )
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typ := *(**runtime.Type)(unsafe.Pointer(&typeptr))
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code, err := c.typeToCode(typ)
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if err != nil {
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return nil, err
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}
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return c.codeToOpcodeSet(typ, code)
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}
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func (c *Compiler) codeToOpcodeSet(typ *runtime.Type, code Code) (*OpcodeSet, error) {
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noescapeKeyCode := c.codeToOpcode(&compileContext{
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structTypeToCodes: map[uintptr]Opcodes{},
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recursiveCodes: &Opcodes{},
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}, typ, code)
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if err := noescapeKeyCode.Validate(); err != nil {
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return nil, err
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}
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escapeKeyCode := c.codeToOpcode(&compileContext{
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structTypeToCodes: map[uintptr]Opcodes{},
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recursiveCodes: &Opcodes{},
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escapeKey: true,
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}, typ, code)
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noescapeKeyCode = copyOpcode(noescapeKeyCode)
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escapeKeyCode = copyOpcode(escapeKeyCode)
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setTotalLengthToInterfaceOp(noescapeKeyCode)
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setTotalLengthToInterfaceOp(escapeKeyCode)
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interfaceNoescapeKeyCode := copyToInterfaceOpcode(noescapeKeyCode)
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interfaceEscapeKeyCode := copyToInterfaceOpcode(escapeKeyCode)
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codeLength := noescapeKeyCode.TotalLength()
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return &OpcodeSet{
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Type: typ,
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NoescapeKeyCode: noescapeKeyCode,
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EscapeKeyCode: escapeKeyCode,
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InterfaceNoescapeKeyCode: interfaceNoescapeKeyCode,
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InterfaceEscapeKeyCode: interfaceEscapeKeyCode,
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CodeLength: codeLength,
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EndCode: ToEndCode(interfaceNoescapeKeyCode),
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Code: code,
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QueryCache: map[string]*OpcodeSet{},
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}, nil
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}
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func (c *Compiler) typeToCode(typ *runtime.Type) (Code, error) {
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switch {
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case c.implementsMarshalJSON(typ):
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return c.marshalJSONCode(typ)
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case c.implementsMarshalText(typ):
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return c.marshalTextCode(typ)
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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 c.implementsMarshalJSON(typ):
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return c.marshalJSONCode(orgType)
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case c.implementsMarshalText(typ):
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return c.marshalTextCode(orgType)
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}
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switch typ.Kind() {
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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 !c.implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
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return c.bytesCode(typ, isPtr)
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}
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}
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return c.sliceCode(typ)
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case reflect.Map:
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if isPtr {
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return c.ptrCode(runtime.PtrTo(typ))
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}
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return c.mapCode(typ)
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case reflect.Struct:
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return c.structCode(typ, isPtr)
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case reflect.Int:
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return c.intCode(typ, isPtr)
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case reflect.Int8:
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return c.int8Code(typ, isPtr)
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case reflect.Int16:
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return c.int16Code(typ, isPtr)
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case reflect.Int32:
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return c.int32Code(typ, isPtr)
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case reflect.Int64:
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return c.int64Code(typ, isPtr)
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case reflect.Uint, reflect.Uintptr:
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return c.uintCode(typ, isPtr)
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case reflect.Uint8:
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return c.uint8Code(typ, isPtr)
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case reflect.Uint16:
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return c.uint16Code(typ, isPtr)
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case reflect.Uint32:
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return c.uint32Code(typ, isPtr)
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case reflect.Uint64:
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return c.uint64Code(typ, isPtr)
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case reflect.Float32:
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return c.float32Code(typ, isPtr)
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case reflect.Float64:
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return c.float64Code(typ, isPtr)
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case reflect.String:
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return c.stringCode(typ, isPtr)
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case reflect.Bool:
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return c.boolCode(typ, isPtr)
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case reflect.Interface:
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return c.interfaceCode(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 c.typeToCodeWithPtr(typ, isPtr)
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}
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}
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func (c *Compiler) typeToCodeWithPtr(typ *runtime.Type, isPtr bool) (Code, error) {
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switch {
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case c.implementsMarshalJSON(typ):
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return c.marshalJSONCode(typ)
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case c.implementsMarshalText(typ):
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return c.marshalTextCode(typ)
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}
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switch typ.Kind() {
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case reflect.Ptr:
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return c.ptrCode(typ)
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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 !c.implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
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return c.bytesCode(typ, false)
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}
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}
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return c.sliceCode(typ)
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case reflect.Array:
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return c.arrayCode(typ)
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case reflect.Map:
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return c.mapCode(typ)
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case reflect.Struct:
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return c.structCode(typ, isPtr)
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case reflect.Interface:
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return c.interfaceCode(typ, false)
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case reflect.Int:
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return c.intCode(typ, false)
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case reflect.Int8:
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return c.int8Code(typ, false)
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case reflect.Int16:
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return c.int16Code(typ, false)
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case reflect.Int32:
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return c.int32Code(typ, false)
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case reflect.Int64:
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return c.int64Code(typ, false)
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case reflect.Uint:
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return c.uintCode(typ, false)
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case reflect.Uint8:
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return c.uint8Code(typ, false)
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case reflect.Uint16:
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return c.uint16Code(typ, false)
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case reflect.Uint32:
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return c.uint32Code(typ, false)
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case reflect.Uint64:
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return c.uint64Code(typ, false)
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case reflect.Uintptr:
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return c.uintCode(typ, false)
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case reflect.Float32:
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return c.float32Code(typ, false)
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case reflect.Float64:
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return c.float64Code(typ, false)
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case reflect.String:
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return c.stringCode(typ, false)
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case reflect.Bool:
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return c.boolCode(typ, 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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const intSize = 32 << (^uint(0) >> 63)
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//nolint:unparam
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func (c *Compiler) intCode(typ *runtime.Type, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) int8Code(typ *runtime.Type, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 8, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) int16Code(typ *runtime.Type, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 16, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) int32Code(typ *runtime.Type, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 32, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) int64Code(typ *runtime.Type, isPtr bool) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 64, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) uintCode(typ *runtime.Type, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: intSize, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) uint8Code(typ *runtime.Type, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: 8, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) uint16Code(typ *runtime.Type, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: 16, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) uint32Code(typ *runtime.Type, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: 32, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) uint64Code(typ *runtime.Type, isPtr bool) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: 64, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) float32Code(typ *runtime.Type, isPtr bool) (*FloatCode, error) {
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return &FloatCode{typ: typ, bitSize: 32, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) float64Code(typ *runtime.Type, isPtr bool) (*FloatCode, error) {
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return &FloatCode{typ: typ, bitSize: 64, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) stringCode(typ *runtime.Type, isPtr bool) (*StringCode, error) {
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return &StringCode{typ: typ, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) boolCode(typ *runtime.Type, isPtr bool) (*BoolCode, error) {
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return &BoolCode{typ: typ, isPtr: isPtr}, nil
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}
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//nolint:unparam
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func (c *Compiler) intStringCode(typ *runtime.Type) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: intSize, isString: true}, nil
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}
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//nolint:unparam
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func (c *Compiler) int8StringCode(typ *runtime.Type) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 8, isString: true}, nil
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}
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//nolint:unparam
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func (c *Compiler) int16StringCode(typ *runtime.Type) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 16, isString: true}, nil
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}
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//nolint:unparam
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func (c *Compiler) int32StringCode(typ *runtime.Type) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 32, isString: true}, nil
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}
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//nolint:unparam
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func (c *Compiler) int64StringCode(typ *runtime.Type) (*IntCode, error) {
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return &IntCode{typ: typ, bitSize: 64, isString: true}, nil
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}
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|
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//nolint:unparam
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func (c *Compiler) uintStringCode(typ *runtime.Type) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: intSize, isString: true}, nil
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}
|
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|
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//nolint:unparam
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func (c *Compiler) uint8StringCode(typ *runtime.Type) (*UintCode, error) {
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return &UintCode{typ: typ, bitSize: 8, isString: true}, nil
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}
|
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|
|
//nolint:unparam
|
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func (c *Compiler) uint16StringCode(typ *runtime.Type) (*UintCode, error) {
|
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return &UintCode{typ: typ, bitSize: 16, isString: true}, nil
|
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}
|
|
|
|
//nolint:unparam
|
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func (c *Compiler) uint32StringCode(typ *runtime.Type) (*UintCode, error) {
|
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return &UintCode{typ: typ, bitSize: 32, isString: true}, nil
|
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}
|
|
|
|
//nolint:unparam
|
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func (c *Compiler) uint64StringCode(typ *runtime.Type) (*UintCode, error) {
|
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return &UintCode{typ: typ, bitSize: 64, isString: true}, nil
|
|
}
|
|
|
|
//nolint:unparam
|
|
func (c *Compiler) bytesCode(typ *runtime.Type, isPtr bool) (*BytesCode, error) {
|
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return &BytesCode{typ: typ, isPtr: isPtr}, nil
|
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}
|
|
|
|
//nolint:unparam
|
|
func (c *Compiler) interfaceCode(typ *runtime.Type, isPtr bool) (*InterfaceCode, error) {
|
|
return &InterfaceCode{typ: typ, isPtr: isPtr}, nil
|
|
}
|
|
|
|
//nolint:unparam
|
|
func (c *Compiler) marshalJSONCode(typ *runtime.Type) (*MarshalJSONCode, error) {
|
|
return &MarshalJSONCode{
|
|
typ: typ,
|
|
isAddrForMarshaler: c.isPtrMarshalJSONType(typ),
|
|
isNilableType: c.isNilableType(typ),
|
|
isMarshalerContext: typ.Implements(marshalJSONContextType) || runtime.PtrTo(typ).Implements(marshalJSONContextType),
|
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}, nil
|
|
}
|
|
|
|
//nolint:unparam
|
|
func (c *Compiler) marshalTextCode(typ *runtime.Type) (*MarshalTextCode, error) {
|
|
return &MarshalTextCode{
|
|
typ: typ,
|
|
isAddrForMarshaler: c.isPtrMarshalTextType(typ),
|
|
isNilableType: c.isNilableType(typ),
|
|
}, nil
|
|
}
|
|
|
|
func (c *Compiler) ptrCode(typ *runtime.Type) (*PtrCode, error) {
|
|
code, err := c.typeToCodeWithPtr(typ.Elem(), true)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ptr, ok := code.(*PtrCode)
|
|
if ok {
|
|
return &PtrCode{typ: typ, value: ptr.value, ptrNum: ptr.ptrNum + 1}, nil
|
|
}
|
|
return &PtrCode{typ: typ, value: code, ptrNum: 1}, nil
|
|
}
|
|
|
|
func (c *Compiler) sliceCode(typ *runtime.Type) (*SliceCode, error) {
|
|
elem := typ.Elem()
|
|
code, err := c.listElemCode(elem)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if code.Kind() == CodeKindStruct {
|
|
structCode := code.(*StructCode)
|
|
structCode.enableIndirect()
|
|
}
|
|
return &SliceCode{typ: typ, value: code}, nil
|
|
}
|
|
|
|
func (c *Compiler) arrayCode(typ *runtime.Type) (*ArrayCode, error) {
|
|
elem := typ.Elem()
|
|
code, err := c.listElemCode(elem)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if code.Kind() == CodeKindStruct {
|
|
structCode := code.(*StructCode)
|
|
structCode.enableIndirect()
|
|
}
|
|
return &ArrayCode{typ: typ, value: code}, nil
|
|
}
|
|
|
|
func (c *Compiler) mapCode(typ *runtime.Type) (*MapCode, error) {
|
|
keyCode, err := c.mapKeyCode(typ.Key())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
valueCode, err := c.mapValueCode(typ.Elem())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if valueCode.Kind() == CodeKindStruct {
|
|
structCode := valueCode.(*StructCode)
|
|
structCode.enableIndirect()
|
|
}
|
|
return &MapCode{typ: typ, key: keyCode, value: valueCode}, nil
|
|
}
|
|
|
|
func (c *Compiler) listElemCode(typ *runtime.Type) (Code, error) {
|
|
switch {
|
|
case c.isPtrMarshalJSONType(typ):
|
|
return c.marshalJSONCode(typ)
|
|
case !typ.Implements(marshalTextType) && runtime.PtrTo(typ).Implements(marshalTextType):
|
|
return c.marshalTextCode(typ)
|
|
case typ.Kind() == reflect.Map:
|
|
return c.ptrCode(runtime.PtrTo(typ))
|
|
default:
|
|
// isPtr was originally used to indicate whether the type of top level is pointer.
|
|
// However, since the slice/array element is a specification that can get the pointer address, explicitly set isPtr to true.
|
|
// See here for related issues: https://github.com/goccy/go-json/issues/370
|
|
code, err := c.typeToCodeWithPtr(typ, true)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ptr, ok := code.(*PtrCode)
|
|
if ok {
|
|
if ptr.value.Kind() == CodeKindMap {
|
|
ptr.ptrNum++
|
|
}
|
|
}
|
|
return code, nil
|
|
}
|
|
}
|
|
|
|
func (c *Compiler) mapKeyCode(typ *runtime.Type) (Code, error) {
|
|
switch {
|
|
case c.implementsMarshalText(typ):
|
|
return c.marshalTextCode(typ)
|
|
}
|
|
switch typ.Kind() {
|
|
case reflect.Ptr:
|
|
return c.ptrCode(typ)
|
|
case reflect.String:
|
|
return c.stringCode(typ, false)
|
|
case reflect.Int:
|
|
return c.intStringCode(typ)
|
|
case reflect.Int8:
|
|
return c.int8StringCode(typ)
|
|
case reflect.Int16:
|
|
return c.int16StringCode(typ)
|
|
case reflect.Int32:
|
|
return c.int32StringCode(typ)
|
|
case reflect.Int64:
|
|
return c.int64StringCode(typ)
|
|
case reflect.Uint:
|
|
return c.uintStringCode(typ)
|
|
case reflect.Uint8:
|
|
return c.uint8StringCode(typ)
|
|
case reflect.Uint16:
|
|
return c.uint16StringCode(typ)
|
|
case reflect.Uint32:
|
|
return c.uint32StringCode(typ)
|
|
case reflect.Uint64:
|
|
return c.uint64StringCode(typ)
|
|
case reflect.Uintptr:
|
|
return c.uintStringCode(typ)
|
|
}
|
|
return nil, &errors.UnsupportedTypeError{Type: runtime.RType2Type(typ)}
|
|
}
|
|
|
|
func (c *Compiler) mapValueCode(typ *runtime.Type) (Code, error) {
|
|
switch typ.Kind() {
|
|
case reflect.Map:
|
|
return c.ptrCode(runtime.PtrTo(typ))
|
|
default:
|
|
code, err := c.typeToCodeWithPtr(typ, false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ptr, ok := code.(*PtrCode)
|
|
if ok {
|
|
if ptr.value.Kind() == CodeKindMap {
|
|
ptr.ptrNum++
|
|
}
|
|
}
|
|
return code, nil
|
|
}
|
|
}
|
|
|
|
func (c *Compiler) structCode(typ *runtime.Type, isPtr bool) (*StructCode, error) {
|
|
typeptr := uintptr(unsafe.Pointer(typ))
|
|
if code, exists := c.structTypeToCode[typeptr]; exists {
|
|
derefCode := *code
|
|
derefCode.isRecursive = true
|
|
return &derefCode, nil
|
|
}
|
|
indirect := runtime.IfaceIndir(typ)
|
|
code := &StructCode{typ: typ, isPtr: isPtr, isIndirect: indirect}
|
|
c.structTypeToCode[typeptr] = code
|
|
|
|
fieldNum := typ.NumField()
|
|
tags := c.typeToStructTags(typ)
|
|
fields := []*StructFieldCode{}
|
|
for i, tag := range tags {
|
|
isOnlyOneFirstField := i == 0 && fieldNum == 1
|
|
field, err := c.structFieldCode(code, tag, isPtr, isOnlyOneFirstField)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if field.isAnonymous {
|
|
structCode := field.getAnonymousStruct()
|
|
if structCode != nil {
|
|
structCode.removeFieldsByTags(tags)
|
|
if c.isAssignableIndirect(field, isPtr) {
|
|
if indirect {
|
|
structCode.isIndirect = true
|
|
} else {
|
|
structCode.isIndirect = false
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
structCode := field.getStruct()
|
|
if structCode != nil {
|
|
if indirect {
|
|
// if parent is indirect type, set child indirect property to true
|
|
structCode.isIndirect = true
|
|
} else {
|
|
// if parent is not indirect type, set child indirect property to false.
|
|
// but if parent's indirect is false and isPtr is true, then indirect must be true.
|
|
// Do this only if indirectConversion is enabled at the end of compileStruct.
|
|
structCode.isIndirect = false
|
|
}
|
|
}
|
|
}
|
|
fields = append(fields, field)
|
|
}
|
|
fieldMap := c.getFieldMap(fields)
|
|
duplicatedFieldMap := c.getDuplicatedFieldMap(fieldMap)
|
|
code.fields = c.filteredDuplicatedFields(fields, duplicatedFieldMap)
|
|
if !code.disableIndirectConversion && !indirect && isPtr {
|
|
code.enableIndirect()
|
|
}
|
|
delete(c.structTypeToCode, typeptr)
|
|
return code, nil
|
|
}
|
|
|
|
func toElemType(t *runtime.Type) *runtime.Type {
|
|
for t.Kind() == reflect.Ptr {
|
|
t = t.Elem()
|
|
}
|
|
return t
|
|
}
|
|
|
|
func (c *Compiler) structFieldCode(structCode *StructCode, 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,
|
|
tag: tag,
|
|
offset: field.Offset,
|
|
isAnonymous: field.Anonymous && !tag.IsTaggedKey && toElemType(fieldType).Kind() == reflect.Struct,
|
|
isTaggedKey: tag.IsTaggedKey,
|
|
isNilableType: c.isNilableType(fieldType),
|
|
isNilCheck: true,
|
|
}
|
|
switch {
|
|
case c.isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(fieldType, isIndirectSpecialCase):
|
|
code, err := c.marshalJSONCode(fieldType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
structCode.isIndirect = false
|
|
structCode.disableIndirectConversion = true
|
|
case c.isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(fieldType, isIndirectSpecialCase):
|
|
code, err := c.marshalTextCode(fieldType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
structCode.isIndirect = false
|
|
structCode.disableIndirectConversion = true
|
|
case isPtr && c.isPtrMarshalJSONType(fieldType):
|
|
// *struct{ field T }
|
|
// func (*T) MarshalJSON() ([]byte, error)
|
|
code, err := c.marshalJSONCode(fieldType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
case isPtr && c.isPtrMarshalTextType(fieldType):
|
|
// *struct{ field T }
|
|
// func (*T) MarshalText() ([]byte, error)
|
|
code, err := c.marshalTextCode(fieldType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
fieldCode.value = code
|
|
fieldCode.isAddrForMarshaler = true
|
|
fieldCode.isNilCheck = false
|
|
default:
|
|
code, err := c.typeToCodeWithPtr(fieldType, isPtr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
switch code.Kind() {
|
|
case CodeKindPtr, CodeKindInterface:
|
|
fieldCode.isNextOpPtrType = true
|
|
}
|
|
fieldCode.value = code
|
|
}
|
|
return fieldCode, nil
|
|
}
|
|
|
|
func (c *Compiler) isAssignableIndirect(fieldCode *StructFieldCode, isPtr bool) bool {
|
|
if isPtr {
|
|
return false
|
|
}
|
|
codeType := fieldCode.value.Kind()
|
|
if codeType == CodeKindMarshalJSON {
|
|
return false
|
|
}
|
|
if codeType == CodeKindMarshalText {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func (c *Compiler) getFieldMap(fields []*StructFieldCode) map[string][]*StructFieldCode {
|
|
fieldMap := map[string][]*StructFieldCode{}
|
|
for _, field := range fields {
|
|
if field.isAnonymous {
|
|
for k, v := range c.getAnonymousFieldMap(field) {
|
|
fieldMap[k] = append(fieldMap[k], v...)
|
|
}
|
|
continue
|
|
}
|
|
fieldMap[field.key] = append(fieldMap[field.key], field)
|
|
}
|
|
return fieldMap
|
|
}
|
|
|
|
func (c *Compiler) getAnonymousFieldMap(field *StructFieldCode) map[string][]*StructFieldCode {
|
|
fieldMap := map[string][]*StructFieldCode{}
|
|
structCode := field.getAnonymousStruct()
|
|
if structCode == nil || structCode.isRecursive {
|
|
fieldMap[field.key] = append(fieldMap[field.key], field)
|
|
return fieldMap
|
|
}
|
|
for k, v := range c.getFieldMapFromAnonymousParent(structCode.fields) {
|
|
fieldMap[k] = append(fieldMap[k], v...)
|
|
}
|
|
return fieldMap
|
|
}
|
|
|
|
func (c *Compiler) getFieldMapFromAnonymousParent(fields []*StructFieldCode) map[string][]*StructFieldCode {
|
|
fieldMap := map[string][]*StructFieldCode{}
|
|
for _, field := range fields {
|
|
if field.isAnonymous {
|
|
for k, v := range c.getAnonymousFieldMap(field) {
|
|
// Do not handle tagged key when embedding more than once
|
|
for _, vv := range v {
|
|
vv.isTaggedKey = false
|
|
}
|
|
fieldMap[k] = append(fieldMap[k], v...)
|
|
}
|
|
continue
|
|
}
|
|
fieldMap[field.key] = append(fieldMap[field.key], field)
|
|
}
|
|
return fieldMap
|
|
}
|
|
|
|
func (c *Compiler) getDuplicatedFieldMap(fieldMap map[string][]*StructFieldCode) map[*StructFieldCode]struct{} {
|
|
duplicatedFieldMap := map[*StructFieldCode]struct{}{}
|
|
for _, fields := range fieldMap {
|
|
if len(fields) == 1 {
|
|
continue
|
|
}
|
|
if c.isTaggedKeyOnly(fields) {
|
|
for _, field := range fields {
|
|
if field.isTaggedKey {
|
|
continue
|
|
}
|
|
duplicatedFieldMap[field] = struct{}{}
|
|
}
|
|
} else {
|
|
for _, field := range fields {
|
|
duplicatedFieldMap[field] = struct{}{}
|
|
}
|
|
}
|
|
}
|
|
return duplicatedFieldMap
|
|
}
|
|
|
|
func (c *Compiler) filteredDuplicatedFields(fields []*StructFieldCode, duplicatedFieldMap map[*StructFieldCode]struct{}) []*StructFieldCode {
|
|
filteredFields := make([]*StructFieldCode, 0, len(fields))
|
|
for _, field := range fields {
|
|
if field.isAnonymous {
|
|
structCode := field.getAnonymousStruct()
|
|
if structCode != nil && !structCode.isRecursive {
|
|
structCode.fields = c.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 (c *Compiler) isTaggedKeyOnly(fields []*StructFieldCode) bool {
|
|
var taggedKeyFieldCount int
|
|
for _, field := range fields {
|
|
if field.isTaggedKey {
|
|
taggedKeyFieldCount++
|
|
}
|
|
}
|
|
return taggedKeyFieldCount == 1
|
|
}
|
|
|
|
func (c *Compiler) 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 (c *Compiler) isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
|
|
return isIndirectSpecialCase && !c.isNilableType(typ) && c.isPtrMarshalJSONType(typ)
|
|
}
|
|
|
|
// *struct{ field T } => struct { field *T }
|
|
// func (*T) MarshalText() ([]byte, error)
|
|
func (c *Compiler) isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
|
|
return isIndirectSpecialCase && !c.isNilableType(typ) && c.isPtrMarshalTextType(typ)
|
|
}
|
|
|
|
func (c *Compiler) implementsMarshalJSON(typ *runtime.Type) bool {
|
|
if !c.implementsMarshalJSONType(typ) {
|
|
return false
|
|
}
|
|
if typ.Kind() != reflect.Ptr {
|
|
return true
|
|
}
|
|
// type kind is reflect.Ptr
|
|
if !c.implementsMarshalJSONType(typ.Elem()) {
|
|
return true
|
|
}
|
|
// needs to dereference
|
|
return false
|
|
}
|
|
|
|
func (c *Compiler) implementsMarshalText(typ *runtime.Type) bool {
|
|
if !typ.Implements(marshalTextType) {
|
|
return false
|
|
}
|
|
if typ.Kind() != reflect.Ptr {
|
|
return true
|
|
}
|
|
// type kind is reflect.Ptr
|
|
if !typ.Elem().Implements(marshalTextType) {
|
|
return true
|
|
}
|
|
// needs to dereference
|
|
return false
|
|
}
|
|
|
|
func (c *Compiler) isNilableType(typ *runtime.Type) bool {
|
|
if !runtime.IfaceIndir(typ) {
|
|
return true
|
|
}
|
|
switch typ.Kind() {
|
|
case reflect.Ptr:
|
|
return true
|
|
case reflect.Map:
|
|
return true
|
|
case reflect.Func:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func (c *Compiler) implementsMarshalJSONType(typ *runtime.Type) bool {
|
|
return typ.Implements(marshalJSONType) || typ.Implements(marshalJSONContextType)
|
|
}
|
|
|
|
func (c *Compiler) isPtrMarshalJSONType(typ *runtime.Type) bool {
|
|
return !c.implementsMarshalJSONType(typ) && c.implementsMarshalJSONType(runtime.PtrTo(typ))
|
|
}
|
|
|
|
func (c *Compiler) isPtrMarshalTextType(typ *runtime.Type) bool {
|
|
return !typ.Implements(marshalTextType) && runtime.PtrTo(typ).Implements(marshalTextType)
|
|
}
|
|
|
|
func (c *Compiler) codeToOpcode(ctx *compileContext, typ *runtime.Type, code Code) *Opcode {
|
|
codes := code.ToOpcode(ctx)
|
|
codes.Last().Next = newEndOp(ctx, typ)
|
|
c.linkRecursiveCode(ctx)
|
|
return codes.First()
|
|
}
|
|
|
|
func (c *Compiler) linkRecursiveCode(ctx *compileContext) {
|
|
recursiveCodes := map[uintptr]*CompiledCode{}
|
|
for _, recursive := range *ctx.recursiveCodes {
|
|
typeptr := uintptr(unsafe.Pointer(recursive.Type))
|
|
codes := ctx.structTypeToCodes[typeptr]
|
|
if recursiveCode, ok := recursiveCodes[typeptr]; ok {
|
|
*recursive.Jmp = *recursiveCode
|
|
continue
|
|
}
|
|
|
|
code := copyOpcode(codes.First())
|
|
code.Op = code.Op.PtrHeadToHead()
|
|
lastCode := newEndOp(&compileContext{}, recursive.Type)
|
|
lastCode.Op = OpRecursiveEnd
|
|
|
|
// OpRecursiveEnd must set before call TotalLength
|
|
code.End.Next = lastCode
|
|
|
|
totalLength := code.TotalLength()
|
|
|
|
// Idx, ElemIdx, Length must set after call TotalLength
|
|
lastCode.Idx = uint32((totalLength + 1) * uintptrSize)
|
|
lastCode.ElemIdx = lastCode.Idx + uintptrSize
|
|
lastCode.Length = lastCode.Idx + 2*uintptrSize
|
|
|
|
// extend length to alloc slot for elemIdx + length
|
|
curTotalLength := uintptr(recursive.TotalLength()) + 3
|
|
nextTotalLength := uintptr(totalLength) + 3
|
|
|
|
compiled := recursive.Jmp
|
|
compiled.Code = code
|
|
compiled.CurLen = curTotalLength
|
|
compiled.NextLen = nextTotalLength
|
|
compiled.Linked = true
|
|
|
|
recursiveCodes[typeptr] = compiled
|
|
}
|
|
}
|