forked from mirrors/gotosocial
1808 lines
No EOL
50 KiB
Go
1808 lines
No EOL
50 KiB
Go
/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ast
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import (
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`encoding/json`
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`fmt`
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`strconv`
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`unsafe`
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`reflect`
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`github.com/bytedance/sonic/internal/native/types`
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`github.com/bytedance/sonic/internal/rt`
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)
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const (
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_CAP_BITS = 32
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_LEN_MASK = 1 << _CAP_BITS - 1
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_NODE_SIZE = unsafe.Sizeof(Node{})
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_PAIR_SIZE = unsafe.Sizeof(Pair{})
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)
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const (
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_V_NONE types.ValueType = 0
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_V_NODE_BASE types.ValueType = 1 << 5
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_V_LAZY types.ValueType = 1 << 7
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_V_RAW types.ValueType = 1 << 8
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_V_NUMBER = _V_NODE_BASE + 1
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_V_ANY = _V_NODE_BASE + 2
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_V_ARRAY_LAZY = _V_LAZY | types.V_ARRAY
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_V_OBJECT_LAZY = _V_LAZY | types.V_OBJECT
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_MASK_LAZY = _V_LAZY - 1
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_MASK_RAW = _V_RAW - 1
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)
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const (
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V_NONE = 0
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V_ERROR = 1
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V_NULL = 2
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V_TRUE = 3
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V_FALSE = 4
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V_ARRAY = 5
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V_OBJECT = 6
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V_STRING = 7
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V_NUMBER = int(_V_NUMBER)
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V_ANY = int(_V_ANY)
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)
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var (
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byteType = rt.UnpackType(reflect.TypeOf(byte(0)))
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)
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type Node struct {
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v int64
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t types.ValueType
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p unsafe.Pointer
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}
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// UnmarshalJSON is just an adapter to json.Unmarshaler.
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// If you want better performance, use Searcher.GetByPath() directly
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func (self *Node) UnmarshalJSON(data []byte) (err error) {
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*self, err = NewSearcher(string(data)).GetByPath()
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return
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}
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/** Node Type Accessor **/
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// Type returns json type represented by the node
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// It will be one of belows:
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// V_NONE = 0 (empty node)
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// V_ERROR = 1 (error node)
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// V_NULL = 2 (json value `null`)
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// V_TRUE = 3 (json value `true`)
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// V_FALSE = 4 (json value `false`)
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// V_ARRAY = 5 (json value array)
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// V_OBJECT = 6 (json value object)
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// V_STRING = 7 (json value string)
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// V_NUMBER = 33 (json value number )
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// V_ANY = 34 (golang interface{})
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func (self Node) Type() int {
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return int(self.t & _MASK_LAZY & _MASK_RAW)
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}
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func (self Node) itype() types.ValueType {
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return self.t & _MASK_LAZY & _MASK_RAW
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}
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// Exists returns false only if the self is nil or empty node V_NONE
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func (self *Node) Exists() bool {
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return self != nil && self.t != _V_NONE
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}
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// Valid reports if self is NOT V_ERROR or nil
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func (self *Node) Valid() bool {
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if self == nil {
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return false
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}
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return self.t != V_ERROR
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}
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// Check checks if the node itself is valid, and return:
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// - ErrNotFound If the node is nil
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// - Its underlying error If the node is V_ERROR
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func (self *Node) Check() error {
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if self == nil {
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return ErrNotExist
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} else if self.t != V_ERROR {
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return nil
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} else {
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return self
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}
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}
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// Error returns error message if the node is invalid
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func (self Node) Error() string {
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if self.t != V_ERROR {
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return ""
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} else {
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return *(*string)(self.p)
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}
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}
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// IsRaw returns true if node's underlying value is raw json
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func (self Node) IsRaw() bool {
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return self.t&_V_RAW != 0
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}
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func (self *Node) isLazy() bool {
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return self != nil && self.t&_V_LAZY != 0
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}
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func (self *Node) isAny() bool {
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return self != nil && self.t == _V_ANY
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}
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/** Simple Value Methods **/
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// Raw returns json representation of the node,
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func (self *Node) Raw() (string, error) {
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if !self.IsRaw() {
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buf, err := self.MarshalJSON()
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return rt.Mem2Str(buf), err
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}
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return rt.StrFrom(self.p, self.v), nil
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}
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func (self *Node) checkRaw() error {
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if err := self.Check(); err != nil {
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return err
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}
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if self.IsRaw() {
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self.parseRaw(false)
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}
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return nil
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}
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// Bool returns bool value represented by this node,
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// including types.V_TRUE|V_FALSE|V_NUMBER|V_STRING|V_ANY|V_NULL,
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// V_NONE will return error
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func (self *Node) Bool() (bool, error) {
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if err := self.checkRaw(); err != nil {
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return false, err
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}
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switch self.t {
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case types.V_TRUE : return true , nil
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case types.V_FALSE : return false, nil
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case types.V_NULL : return false, nil
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case _V_NUMBER :
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if i, err := numberToInt64(self); err == nil {
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return i != 0, nil
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} else if f, err := numberToFloat64(self); err == nil {
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return f != 0, nil
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} else {
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return false, err
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}
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case types.V_STRING: return strconv.ParseBool(rt.StrFrom(self.p, self.v))
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case bool : return v, nil
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case int : return v != 0, nil
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case int8 : return v != 0, nil
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case int16 : return v != 0, nil
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case int32 : return v != 0, nil
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case int64 : return v != 0, nil
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case uint : return v != 0, nil
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case uint8 : return v != 0, nil
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case uint16 : return v != 0, nil
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case uint32 : return v != 0, nil
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case uint64 : return v != 0, nil
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case float32: return v != 0, nil
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case float64: return v != 0, nil
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case string : return strconv.ParseBool(v)
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case json.Number:
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if i, err := v.Int64(); err == nil {
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return i != 0, nil
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} else if f, err := v.Float64(); err == nil {
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return f != 0, nil
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} else {
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return false, err
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}
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default: return false, ErrUnsupportType
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}
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default : return false, ErrUnsupportType
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}
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}
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// Int64 casts the node to int64 value,
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// including V_NUMBER|V_TRUE|V_FALSE|V_ANY|V_STRING
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// V_NONE it will return error
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func (self *Node) Int64() (int64, error) {
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if err := self.checkRaw(); err != nil {
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return 0, err
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}
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switch self.t {
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case _V_NUMBER, types.V_STRING :
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if i, err := numberToInt64(self); err == nil {
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return i, nil
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} else if f, err := numberToFloat64(self); err == nil {
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return int64(f), nil
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} else {
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return 0, err
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}
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case types.V_TRUE : return 1, nil
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case types.V_FALSE : return 0, nil
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case types.V_NULL : return 0, nil
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case bool : if v { return 1, nil } else { return 0, nil }
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case int : return int64(v), nil
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case int8 : return int64(v), nil
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case int16 : return int64(v), nil
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case int32 : return int64(v), nil
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case int64 : return int64(v), nil
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case uint : return int64(v), nil
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case uint8 : return int64(v), nil
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case uint16 : return int64(v), nil
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case uint32 : return int64(v), nil
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case uint64 : return int64(v), nil
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case float32: return int64(v), nil
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case float64: return int64(v), nil
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case string :
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if i, err := strconv.ParseInt(v, 10, 64); err == nil {
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return i, nil
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} else if f, err := strconv.ParseFloat(v, 64); err == nil {
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return int64(f), nil
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} else {
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return 0, err
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}
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case json.Number:
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if i, err := v.Int64(); err == nil {
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return i, nil
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} else if f, err := v.Float64(); err == nil {
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return int64(f), nil
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} else {
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return 0, err
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}
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default: return 0, ErrUnsupportType
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}
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default : return 0, ErrUnsupportType
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}
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}
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// StrictInt64 exports underlying int64 value, including V_NUMBER, V_ANY
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func (self *Node) StrictInt64() (int64, error) {
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if err := self.checkRaw(); err != nil {
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return 0, err
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}
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switch self.t {
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case _V_NUMBER : return numberToInt64(self)
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case int : return int64(v), nil
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case int8 : return int64(v), nil
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case int16 : return int64(v), nil
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case int32 : return int64(v), nil
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case int64 : return int64(v), nil
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case uint : return int64(v), nil
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case uint8 : return int64(v), nil
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case uint16: return int64(v), nil
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case uint32: return int64(v), nil
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case uint64: return int64(v), nil
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case json.Number:
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if i, err := v.Int64(); err == nil {
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return i, nil
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} else {
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return 0, err
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}
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default: return 0, ErrUnsupportType
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}
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default : return 0, ErrUnsupportType
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}
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}
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func castNumber(v bool) json.Number {
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if v {
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return json.Number("1")
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} else {
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return json.Number("0")
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}
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}
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// Number casts node to float64,
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// including V_NUMBER|V_TRUE|V_FALSE|V_ANY|V_STRING|V_NULL,
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// V_NONE it will return error
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func (self *Node) Number() (json.Number, error) {
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if err := self.checkRaw(); err != nil {
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return json.Number(""), err
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}
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switch self.t {
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case _V_NUMBER : return toNumber(self) , nil
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case types.V_STRING :
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if _, err := numberToInt64(self); err == nil {
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return toNumber(self), nil
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} else if _, err := numberToFloat64(self); err == nil {
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return toNumber(self), nil
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} else {
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return json.Number(""), err
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}
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case types.V_TRUE : return json.Number("1"), nil
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case types.V_FALSE : return json.Number("0"), nil
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case types.V_NULL : return json.Number("0"), nil
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case bool : return castNumber(v), nil
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case int : return castNumber(v != 0), nil
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case int8 : return castNumber(v != 0), nil
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case int16 : return castNumber(v != 0), nil
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case int32 : return castNumber(v != 0), nil
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case int64 : return castNumber(v != 0), nil
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case uint : return castNumber(v != 0), nil
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case uint8 : return castNumber(v != 0), nil
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case uint16 : return castNumber(v != 0), nil
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case uint32 : return castNumber(v != 0), nil
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case uint64 : return castNumber(v != 0), nil
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case float32: return castNumber(v != 0), nil
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case float64: return castNumber(v != 0), nil
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case string :
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if _, err := strconv.ParseFloat(v, 64); err == nil {
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return json.Number(v), nil
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} else {
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return json.Number(""), err
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}
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case json.Number: return v, nil
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default: return json.Number(""), ErrUnsupportType
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}
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default : return json.Number(""), ErrUnsupportType
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}
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}
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// Number exports underlying float64 value, including V_NUMBER, V_ANY of json.Number
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func (self *Node) StrictNumber() (json.Number, error) {
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if err := self.checkRaw(); err != nil {
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return json.Number(""), err
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}
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switch self.t {
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case _V_NUMBER : return toNumber(self) , nil
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case _V_ANY :
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if v, ok := self.packAny().(json.Number); ok {
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return v, nil
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} else {
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return json.Number(""), ErrUnsupportType
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}
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default : return json.Number(""), ErrUnsupportType
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}
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}
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// String cast node to string,
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// including V_NUMBER|V_TRUE|V_FALSE|V_ANY|V_STRING|V_NULL,
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// V_NONE it will return error
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func (self *Node) String() (string, error) {
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if err := self.checkRaw(); err != nil {
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return "", err
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}
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switch self.t {
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case types.V_NULL : return "" , nil
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case types.V_TRUE : return "true" , nil
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case types.V_FALSE : return "false", nil
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case types.V_STRING, _V_NUMBER : return rt.StrFrom(self.p, self.v), nil
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case bool : return strconv.FormatBool(v), nil
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case int : return strconv.Itoa(v), nil
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case int8 : return strconv.Itoa(int(v)), nil
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case int16 : return strconv.Itoa(int(v)), nil
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case int32 : return strconv.Itoa(int(v)), nil
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case int64 : return strconv.Itoa(int(v)), nil
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case uint : return strconv.Itoa(int(v)), nil
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case uint8 : return strconv.Itoa(int(v)), nil
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case uint16 : return strconv.Itoa(int(v)), nil
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case uint32 : return strconv.Itoa(int(v)), nil
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case uint64 : return strconv.Itoa(int(v)), nil
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case float32: return strconv.FormatFloat(float64(v), 'g', -1, 64), nil
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case float64: return strconv.FormatFloat(float64(v), 'g', -1, 64), nil
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case string : return v, nil
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case json.Number: return v.String(), nil
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default: return "", ErrUnsupportType
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}
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default : return "" , ErrUnsupportType
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}
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}
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// StrictString returns string value (unescaped), includeing V_STRING, V_ANY of string.
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// In other cases, it will return empty string.
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func (self *Node) StrictString() (string, error) {
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if err := self.checkRaw(); err != nil {
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return "", err
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}
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switch self.t {
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case types.V_STRING : return rt.StrFrom(self.p, self.v), nil
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case _V_ANY :
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if v, ok := self.packAny().(string); ok {
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return v, nil
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} else {
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return "", ErrUnsupportType
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}
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default : return "", ErrUnsupportType
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}
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}
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|
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// Float64 cast node to float64,
|
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// including V_NUMBER|V_TRUE|V_FALSE|V_ANY|V_STRING|V_NULL,
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// V_NONE it will return error
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func (self *Node) Float64() (float64, error) {
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if err := self.checkRaw(); err != nil {
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return 0.0, err
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}
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switch self.t {
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case _V_NUMBER, types.V_STRING : return numberToFloat64(self)
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case types.V_TRUE : return 1.0, nil
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case types.V_FALSE : return 0.0, nil
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case types.V_NULL : return 0.0, nil
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case _V_ANY :
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any := self.packAny()
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switch v := any.(type) {
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case bool :
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if v {
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return 1.0, nil
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} else {
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return 0.0, nil
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}
|
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case int : return float64(v), nil
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case int8 : return float64(v), nil
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case int16 : return float64(v), nil
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case int32 : return float64(v), nil
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case int64 : return float64(v), nil
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case uint : return float64(v), nil
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case uint8 : return float64(v), nil
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case uint16 : return float64(v), nil
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case uint32 : return float64(v), nil
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case uint64 : return float64(v), nil
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case float32: return float64(v), nil
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case float64: return float64(v), nil
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case string :
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if f, err := strconv.ParseFloat(v, 64); err == nil {
|
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return float64(f), nil
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} else {
|
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return 0, err
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}
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case json.Number:
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if f, err := v.Float64(); err == nil {
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return float64(f), nil
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} else {
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return 0, err
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}
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default : return 0, ErrUnsupportType
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}
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default : return 0.0, ErrUnsupportType
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}
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}
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|
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// Float64 exports underlying float64 value, includeing V_NUMBER, V_ANY
|
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func (self *Node) StrictFloat64() (float64, error) {
|
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if err := self.checkRaw(); err != nil {
|
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return 0.0, err
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}
|
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switch self.t {
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case _V_NUMBER : return numberToFloat64(self)
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|
case _V_ANY :
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any := self.packAny()
|
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switch v := any.(type) {
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case float32 : return float64(v), nil
|
|
case float64 : return float64(v), nil
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default : return 0, ErrUnsupportType
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}
|
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default : return 0.0, ErrUnsupportType
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}
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}
|
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|
|
/** Sequencial Value Methods **/
|
|
|
|
// Len returns children count of a array|object|string node
|
|
// For partially loaded node, it also works but only counts the parsed children
|
|
func (self *Node) Len() (int, error) {
|
|
if err := self.checkRaw(); err != nil {
|
|
return 0, err
|
|
}
|
|
if self.t == types.V_ARRAY || self.t == types.V_OBJECT || self.t == _V_ARRAY_LAZY || self.t == _V_OBJECT_LAZY {
|
|
return int(self.v & _LEN_MASK), nil
|
|
} else if self.t == types.V_STRING {
|
|
return int(self.v), nil
|
|
} else if self.t == _V_NONE || self.t == types.V_NULL {
|
|
return 0, nil
|
|
} else {
|
|
return 0, ErrUnsupportType
|
|
}
|
|
}
|
|
|
|
func (self Node) len() int {
|
|
return int(self.v & _LEN_MASK)
|
|
}
|
|
|
|
// Cap returns malloc capacity of a array|object node for children
|
|
func (self *Node) Cap() (int, error) {
|
|
if err := self.checkRaw(); err != nil {
|
|
return 0, err
|
|
}
|
|
if self.t == types.V_ARRAY || self.t == types.V_OBJECT || self.t == _V_ARRAY_LAZY || self.t == _V_OBJECT_LAZY {
|
|
return int(self.v >> _CAP_BITS), nil
|
|
} else if self.t == _V_NONE || self.t == types.V_NULL {
|
|
return 0, nil
|
|
} else {
|
|
return 0, ErrUnsupportType
|
|
}
|
|
}
|
|
|
|
func (self Node) cap() int {
|
|
return int(self.v >> _CAP_BITS)
|
|
}
|
|
|
|
// Set sets the node of given key under self, and reports if the key has existed.
|
|
//
|
|
// If self is V_NONE or V_NULL, it becomes V_OBJECT and sets the node at the key.
|
|
func (self *Node) Set(key string, node Node) (bool, error) {
|
|
if self != nil && (self.t == _V_NONE || self.t == types.V_NULL) {
|
|
*self = NewObject([]Pair{{key, node}})
|
|
return false, nil
|
|
}
|
|
|
|
if err := node.Check(); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
p := self.Get(key)
|
|
if !p.Exists() {
|
|
l := self.len()
|
|
c := self.cap()
|
|
if l == c {
|
|
// TODO: maybe change append size in future
|
|
c += _DEFAULT_NODE_CAP
|
|
mem := unsafe_NewArray(_PAIR_TYPE, c)
|
|
memmove(mem, self.p, _PAIR_SIZE * uintptr(l))
|
|
self.p = mem
|
|
}
|
|
v := self.pairAt(l)
|
|
v.Key = key
|
|
v.Value = node
|
|
self.setCapAndLen(c, l+1)
|
|
return false, nil
|
|
|
|
} else if err := p.Check(); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
*p = node
|
|
return true, nil
|
|
}
|
|
|
|
// SetAny wraps val with V_ANY node, and Set() the node.
|
|
func (self *Node) SetAny(key string, val interface{}) (bool, error) {
|
|
return self.Set(key, NewAny(val))
|
|
}
|
|
|
|
// Unset remove the node of given key under object parent, and reports if the key has existed.
|
|
func (self *Node) Unset(key string) (bool, error) {
|
|
self.must(types.V_OBJECT, "an object")
|
|
p, i := self.skipKey(key)
|
|
if !p.Exists() {
|
|
return false, nil
|
|
} else if err := p.Check(); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
self.removePair(i)
|
|
return true, nil
|
|
}
|
|
|
|
// SetByIndex sets the node of given index, and reports if the key has existed.
|
|
//
|
|
// The index must be within self's children.
|
|
func (self *Node) SetByIndex(index int, node Node) (bool, error) {
|
|
if err := node.Check(); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
p := self.Index(index)
|
|
if !p.Exists() {
|
|
return false, ErrNotExist
|
|
} else if err := p.Check(); err != nil {
|
|
return false, err
|
|
}
|
|
|
|
*p = node
|
|
return true, nil
|
|
}
|
|
|
|
// SetAny wraps val with V_ANY node, and SetByIndex() the node.
|
|
func (self *Node) SetAnyByIndex(index int, val interface{}) (bool, error) {
|
|
return self.SetByIndex(index, NewAny(val))
|
|
}
|
|
|
|
// UnsetByIndex remove the node of given index
|
|
func (self *Node) UnsetByIndex(index int) (bool, error) {
|
|
var p *Node
|
|
it := self.itype()
|
|
if it == types.V_ARRAY {
|
|
p = self.Index(index)
|
|
}else if it == types.V_OBJECT {
|
|
pr := self.skipIndexPair(index)
|
|
if pr == nil {
|
|
return false, ErrNotExist
|
|
}
|
|
p = &pr.Value
|
|
} else {
|
|
return false, ErrUnsupportType
|
|
}
|
|
|
|
if !p.Exists() {
|
|
return false, ErrNotExist
|
|
}
|
|
|
|
if it == types.V_ARRAY {
|
|
self.removeNode(index)
|
|
}else if it == types.V_OBJECT {
|
|
self.removePair(index)
|
|
}
|
|
return true, nil
|
|
}
|
|
|
|
// Add appends the given node under self.
|
|
//
|
|
// If self is V_NONE or V_NULL, it becomes V_ARRAY and sets the node at index 0.
|
|
func (self *Node) Add(node Node) error {
|
|
if self != nil && (self.t == _V_NONE || self.t == types.V_NULL) {
|
|
*self = NewArray([]Node{node})
|
|
return nil
|
|
}
|
|
|
|
if err := self.should(types.V_ARRAY, "an array"); err != nil {
|
|
return err
|
|
}
|
|
if err := self.skipAllIndex(); err != nil {
|
|
return err
|
|
}
|
|
|
|
var p rt.GoSlice
|
|
p.Cap = self.cap()
|
|
p.Len = self.len()
|
|
p.Ptr = self.p
|
|
|
|
s := *(*[]Node)(unsafe.Pointer(&p))
|
|
s = append(s, node)
|
|
|
|
self.p = unsafe.Pointer(&s[0])
|
|
self.setCapAndLen(cap(s), len(s))
|
|
return nil
|
|
}
|
|
|
|
// SetAny wraps val with V_ANY node, and Add() the node.
|
|
func (self *Node) AddAny(val interface{}) error {
|
|
return self.Add(NewAny(val))
|
|
}
|
|
|
|
// GetByPath load given path on demands,
|
|
// which only ensure nodes before this path got parsed.
|
|
//
|
|
// Note, the api expects the json is well-formed at least,
|
|
// otherwise it may return unexpected result.
|
|
func (self *Node) GetByPath(path ...interface{}) *Node {
|
|
if !self.Valid() {
|
|
return self
|
|
}
|
|
var s = self
|
|
for _, p := range path {
|
|
switch p := p.(type) {
|
|
case int:
|
|
s = s.Index(p)
|
|
if !s.Valid() {
|
|
return s
|
|
}
|
|
case string:
|
|
s = s.Get(p)
|
|
if !s.Valid() {
|
|
return s
|
|
}
|
|
default:
|
|
panic("path must be either int or string")
|
|
}
|
|
}
|
|
return s
|
|
}
|
|
|
|
// Get loads given key of an object node on demands
|
|
func (self *Node) Get(key string) *Node {
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return unwrapError(err)
|
|
}
|
|
n, _ := self.skipKey(key)
|
|
return n
|
|
}
|
|
|
|
// Index indexies node at given idx,
|
|
// node type CAN be either V_OBJECT or V_ARRAY
|
|
func (self *Node) Index(idx int) *Node {
|
|
if err := self.checkRaw(); err != nil {
|
|
return unwrapError(err)
|
|
}
|
|
|
|
it := self.itype()
|
|
if it == types.V_ARRAY {
|
|
return self.skipIndex(idx)
|
|
|
|
}else if it == types.V_OBJECT {
|
|
pr := self.skipIndexPair(idx)
|
|
if pr == nil {
|
|
return newError(_ERR_NOT_FOUND, "value not exists")
|
|
}
|
|
return &pr.Value
|
|
|
|
} else {
|
|
return newError(_ERR_UNSUPPORT_TYPE, fmt.Sprintf("unsupported type: %v", self.itype()))
|
|
}
|
|
}
|
|
|
|
// IndexPair indexies pair at given idx,
|
|
// node type MUST be either V_OBJECT
|
|
func (self *Node) IndexPair(idx int) *Pair {
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return nil
|
|
}
|
|
return self.skipIndexPair(idx)
|
|
}
|
|
|
|
// IndexOrGet firstly use idx to index a value and check if its key matches
|
|
// If not, then use the key to search value
|
|
func (self *Node) IndexOrGet(idx int, key string) *Node {
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return unwrapError(err)
|
|
}
|
|
|
|
pr := self.skipIndexPair(idx)
|
|
if pr != nil && pr.Key == key {
|
|
return &pr.Value
|
|
}
|
|
n, _ := self.skipKey(key)
|
|
return n
|
|
}
|
|
|
|
/** Generic Value Converters **/
|
|
|
|
// Map loads all keys of an object node
|
|
func (self *Node) Map() (map[string]interface{}, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.(map[string]interface{}); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.loadAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObject()
|
|
}
|
|
|
|
// MapUseNumber loads all keys of an object node, with numeric nodes casted to json.Number
|
|
func (self *Node) MapUseNumber() (map[string]interface{}, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.(map[string]interface{}); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.loadAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObjectUseNumber()
|
|
}
|
|
|
|
// MapUseNode scans both parsed and non-parsed chidren nodes,
|
|
// and map them by their keys
|
|
func (self *Node) MapUseNode() (map[string]Node, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.(map[string]Node); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.skipAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObjectUseNode()
|
|
}
|
|
|
|
// MapUnsafe exports the underlying pointer to its children map
|
|
// WARN: don't use it unless you know what you are doing
|
|
func (self *Node) UnsafeMap() ([]Pair, error) {
|
|
if err := self.should(types.V_OBJECT, "an object"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.skipAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
s := rt.Ptr2SlicePtr(self.p, int(self.len()), self.cap())
|
|
return *(*[]Pair)(s), nil
|
|
}
|
|
|
|
// SortKeys sorts children of a V_OBJECT node in ascending key-order.
|
|
// If recurse is true, it recursively sorts children's children as long as a V_OBJECT node is found.
|
|
func (self *Node) SortKeys(recurse bool) (err error) {
|
|
ps, err := self.UnsafeMap()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
PairSlice(ps).Sort()
|
|
if recurse {
|
|
var sc Scanner
|
|
sc = func(path Sequence, node *Node) bool {
|
|
if node.itype() == types.V_OBJECT {
|
|
if err := node.SortKeys(recurse); err != nil {
|
|
return false
|
|
}
|
|
}
|
|
if node.itype() == types.V_ARRAY {
|
|
if err := node.ForEach(sc); err != nil {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
self.ForEach(sc)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Array loads all indexes of an array node
|
|
func (self *Node) Array() ([]interface{}, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.([]interface{}); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_ARRAY, "an array"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.loadAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArray()
|
|
}
|
|
|
|
// ArrayUseNumber loads all indexes of an array node, with numeric nodes casted to json.Number
|
|
func (self *Node) ArrayUseNumber() ([]interface{}, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.([]interface{}); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_ARRAY, "an array"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.loadAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArrayUseNumber()
|
|
}
|
|
|
|
// ArrayUseNode copys both parsed and non-parsed chidren nodes,
|
|
// and indexes them by original order
|
|
func (self *Node) ArrayUseNode() ([]Node, error) {
|
|
if self.isAny() {
|
|
any := self.packAny()
|
|
if v, ok := any.([]Node); ok {
|
|
return v, nil
|
|
} else {
|
|
return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
if err := self.should(types.V_ARRAY, "an array"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.skipAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArrayUseNode()
|
|
}
|
|
|
|
// ArrayUnsafe exports the underlying pointer to its children array
|
|
// WARN: don't use it unless you know what you are doing
|
|
func (self *Node) UnsafeArray() ([]Node, error) {
|
|
if err := self.should(types.V_ARRAY, "an array"); err != nil {
|
|
return nil, err
|
|
}
|
|
if err := self.skipAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
s := rt.Ptr2SlicePtr(self.p, self.len(), self.cap())
|
|
return *(*[]Node)(s), nil
|
|
}
|
|
|
|
// Interface loads all children under all pathes from this node,
|
|
// and converts itself as generic type.
|
|
// WARN: all numberic nodes are casted to float64
|
|
func (self *Node) Interface() (interface{}, error) {
|
|
if err := self.checkRaw(); err != nil {
|
|
return nil, err
|
|
}
|
|
switch self.t {
|
|
case V_ERROR : return nil, self.Check()
|
|
case types.V_NULL : return nil, nil
|
|
case types.V_TRUE : return true, nil
|
|
case types.V_FALSE : return false, nil
|
|
case types.V_ARRAY : return self.toGenericArray()
|
|
case types.V_OBJECT : return self.toGenericObject()
|
|
case types.V_STRING : return rt.StrFrom(self.p, self.v), nil
|
|
case _V_NUMBER :
|
|
v, err := numberToFloat64(self)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return v, nil
|
|
case _V_ARRAY_LAZY :
|
|
if err := self.loadAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArray()
|
|
case _V_OBJECT_LAZY :
|
|
if err := self.loadAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObject()
|
|
case _V_ANY:
|
|
switch v := self.packAny().(type) {
|
|
case Node : return v.Interface()
|
|
case *Node: return v.Interface()
|
|
default : return v, nil
|
|
}
|
|
default : return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
|
|
func (self *Node) packAny() interface{} {
|
|
return *(*interface{})(self.p)
|
|
}
|
|
|
|
// InterfaceUseNumber works same with Interface()
|
|
// except numberic nodes are casted to json.Number
|
|
func (self *Node) InterfaceUseNumber() (interface{}, error) {
|
|
if err := self.checkRaw(); err != nil {
|
|
return nil, err
|
|
}
|
|
switch self.t {
|
|
case V_ERROR : return nil, self.Check()
|
|
case types.V_NULL : return nil, nil
|
|
case types.V_TRUE : return true, nil
|
|
case types.V_FALSE : return false, nil
|
|
case types.V_ARRAY : return self.toGenericArrayUseNumber()
|
|
case types.V_OBJECT : return self.toGenericObjectUseNumber()
|
|
case types.V_STRING : return rt.StrFrom(self.p, self.v), nil
|
|
case _V_NUMBER : return toNumber(self), nil
|
|
case _V_ARRAY_LAZY :
|
|
if err := self.loadAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArrayUseNumber()
|
|
case _V_OBJECT_LAZY :
|
|
if err := self.loadAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObjectUseNumber()
|
|
case _V_ANY : return self.packAny(), nil
|
|
default : return nil, ErrUnsupportType
|
|
}
|
|
}
|
|
|
|
// InterfaceUseNode clone itself as a new node,
|
|
// or its children as map[string]Node (or []Node)
|
|
func (self *Node) InterfaceUseNode() (interface{}, error) {
|
|
if err := self.checkRaw(); err != nil {
|
|
return nil, err
|
|
}
|
|
switch self.t {
|
|
case types.V_ARRAY : return self.toGenericArrayUseNode()
|
|
case types.V_OBJECT : return self.toGenericObjectUseNode()
|
|
case _V_ARRAY_LAZY :
|
|
if err := self.skipAllIndex(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericArrayUseNode()
|
|
case _V_OBJECT_LAZY :
|
|
if err := self.skipAllKey(); err != nil {
|
|
return nil, err
|
|
}
|
|
return self.toGenericObjectUseNode()
|
|
default : return *self, self.Check()
|
|
}
|
|
}
|
|
|
|
// LoadAll loads all the node's children and children's children as parsed.
|
|
// After calling it, the node can be safely used on concurrency
|
|
func (self *Node) LoadAll() error {
|
|
if self.IsRaw() {
|
|
self.parseRaw(true)
|
|
return self.Check()
|
|
}
|
|
|
|
switch self.itype() {
|
|
case types.V_ARRAY:
|
|
e := self.len()
|
|
if err := self.loadAllIndex(); err != nil {
|
|
return err
|
|
}
|
|
for i := 0; i < e; i++ {
|
|
n := self.nodeAt(i)
|
|
if n.IsRaw() {
|
|
n.parseRaw(true)
|
|
}
|
|
if err := n.Check(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
case types.V_OBJECT:
|
|
e := self.len()
|
|
if err := self.loadAllKey(); err != nil {
|
|
return err
|
|
}
|
|
for i := 0; i < e; i++ {
|
|
n := self.pairAt(i)
|
|
if n.Value.IsRaw() {
|
|
n.Value.parseRaw(true)
|
|
}
|
|
if err := n.Value.Check(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
default:
|
|
return self.Check()
|
|
}
|
|
}
|
|
|
|
// Load loads the node's children as parsed.
|
|
// After calling it, only the node itself can be used on concurrency (not include its children)
|
|
func (self *Node) Load() error {
|
|
if self.IsRaw() {
|
|
self.parseRaw(false)
|
|
return self.Load()
|
|
}
|
|
|
|
switch self.t {
|
|
case _V_ARRAY_LAZY:
|
|
return self.skipAllIndex()
|
|
case _V_OBJECT_LAZY:
|
|
return self.skipAllKey()
|
|
default:
|
|
return self.Check()
|
|
}
|
|
}
|
|
|
|
/**---------------------------------- Internal Helper Methods ----------------------------------**/
|
|
|
|
var (
|
|
_NODE_TYPE = rt.UnpackEface(Node{}).Type
|
|
_PAIR_TYPE = rt.UnpackEface(Pair{}).Type
|
|
)
|
|
|
|
func (self *Node) setCapAndLen(cap int, len int) {
|
|
if self.t == types.V_ARRAY || self.t == types.V_OBJECT || self.t == _V_ARRAY_LAZY || self.t == _V_OBJECT_LAZY {
|
|
self.v = int64(len&_LEN_MASK | cap<<_CAP_BITS)
|
|
} else {
|
|
panic("value does not have a length")
|
|
}
|
|
}
|
|
|
|
func (self *Node) unsafe_next() *Node {
|
|
return (*Node)(unsafe.Pointer(uintptr(unsafe.Pointer(self)) + _NODE_SIZE))
|
|
}
|
|
|
|
func (self *Pair) unsafe_next() *Pair {
|
|
return (*Pair)(unsafe.Pointer(uintptr(unsafe.Pointer(self)) + _PAIR_SIZE))
|
|
}
|
|
|
|
func (self *Node) must(t types.ValueType, s string) {
|
|
if err := self.checkRaw(); err != nil {
|
|
panic(err)
|
|
}
|
|
if err := self.Check(); err != nil {
|
|
panic(err)
|
|
}
|
|
if self.itype() != t {
|
|
panic("value cannot be represented as " + s)
|
|
}
|
|
}
|
|
|
|
func (self *Node) should(t types.ValueType, s string) error {
|
|
if err := self.checkRaw(); err != nil {
|
|
return err
|
|
}
|
|
if self.itype() != t {
|
|
return ErrUnsupportType
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) nodeAt(i int) *Node {
|
|
var p = self.p
|
|
if self.isLazy() {
|
|
_, stack := self.getParserAndArrayStack()
|
|
p = *(*unsafe.Pointer)(unsafe.Pointer(&stack.v))
|
|
}
|
|
return (*Node)(unsafe.Pointer(uintptr(p) + uintptr(i)*_NODE_SIZE))
|
|
}
|
|
|
|
func (self *Node) pairAt(i int) *Pair {
|
|
var p = self.p
|
|
if self.isLazy() {
|
|
_, stack := self.getParserAndObjectStack()
|
|
p = *(*unsafe.Pointer)(unsafe.Pointer(&stack.v))
|
|
}
|
|
return (*Pair)(unsafe.Pointer(uintptr(p) + uintptr(i)*_PAIR_SIZE))
|
|
}
|
|
|
|
func (self *Node) getParserAndArrayStack() (*Parser, *parseArrayStack) {
|
|
stack := (*parseArrayStack)(self.p)
|
|
ret := (*rt.GoSlice)(unsafe.Pointer(&stack.v))
|
|
ret.Len = self.len()
|
|
ret.Cap = self.cap()
|
|
return &stack.parser, stack
|
|
}
|
|
|
|
func (self *Node) getParserAndObjectStack() (*Parser, *parseObjectStack) {
|
|
stack := (*parseObjectStack)(self.p)
|
|
ret := (*rt.GoSlice)(unsafe.Pointer(&stack.v))
|
|
ret.Len = self.len()
|
|
ret.Cap = self.cap()
|
|
return &stack.parser, stack
|
|
}
|
|
|
|
func (self *Node) skipAllIndex() error {
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
var err types.ParsingError
|
|
parser, stack := self.getParserAndArrayStack()
|
|
parser.skipValue = true
|
|
parser.noLazy = true
|
|
*self, err = parser.decodeArray(stack.v)
|
|
if err != 0 {
|
|
return parser.ExportError(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) skipAllKey() error {
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
var err types.ParsingError
|
|
parser, stack := self.getParserAndObjectStack()
|
|
parser.skipValue = true
|
|
parser.noLazy = true
|
|
*self, err = parser.decodeObject(stack.v)
|
|
if err != 0 {
|
|
return parser.ExportError(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) skipKey(key string) (*Node, int) {
|
|
nb := self.len()
|
|
lazy := self.isLazy()
|
|
|
|
if nb > 0 {
|
|
/* linear search */
|
|
var p *Pair
|
|
if lazy {
|
|
s := (*parseObjectStack)(self.p)
|
|
p = &s.v[0]
|
|
} else {
|
|
p = (*Pair)(self.p)
|
|
}
|
|
|
|
if p.Key == key {
|
|
return &p.Value, 0
|
|
}
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
if p.Key == key {
|
|
return &p.Value, i
|
|
}
|
|
}
|
|
}
|
|
|
|
/* not found */
|
|
if !lazy {
|
|
return nil, -1
|
|
}
|
|
|
|
// lazy load
|
|
for last, i := self.skipNextPair(), nb; last != nil; last, i = self.skipNextPair(), i+1 {
|
|
if last.Value.Check() != nil {
|
|
return &last.Value, -1
|
|
}
|
|
if last.Key == key {
|
|
return &last.Value, i
|
|
}
|
|
}
|
|
|
|
return nil, -1
|
|
}
|
|
|
|
func (self *Node) skipIndex(index int) *Node {
|
|
nb := self.len()
|
|
if nb > index {
|
|
v := self.nodeAt(index)
|
|
return v
|
|
}
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
|
|
// lazy load
|
|
for last := self.skipNextNode(); last != nil; last = self.skipNextNode(){
|
|
if last.Check() != nil {
|
|
return last
|
|
}
|
|
if self.len() > index {
|
|
return last
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) skipIndexPair(index int) *Pair {
|
|
nb := self.len()
|
|
if nb > index {
|
|
return self.pairAt(index)
|
|
}
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
|
|
// lazy load
|
|
for last := self.skipNextPair(); last != nil; last = self.skipNextPair(){
|
|
if last.Value.Check() != nil {
|
|
return last
|
|
}
|
|
if self.len() > index {
|
|
return last
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) loadAllIndex() error {
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
var err types.ParsingError
|
|
parser, stack := self.getParserAndArrayStack()
|
|
parser.noLazy = true
|
|
*self, err = parser.decodeArray(stack.v)
|
|
if err != 0 {
|
|
return parser.ExportError(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) loadAllKey() error {
|
|
if !self.isLazy() {
|
|
return nil
|
|
}
|
|
var err types.ParsingError
|
|
parser, stack := self.getParserAndObjectStack()
|
|
parser.noLazy = true
|
|
*self, err = parser.decodeObject(stack.v)
|
|
if err != 0 {
|
|
return parser.ExportError(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *Node) removeNode(i int) {
|
|
nb := self.len() - 1
|
|
node := self.nodeAt(i)
|
|
if i == nb {
|
|
self.setCapAndLen(self.cap(), nb)
|
|
*node = Node{}
|
|
return
|
|
}
|
|
|
|
from := self.nodeAt(i + 1)
|
|
memmove(unsafe.Pointer(node), unsafe.Pointer(from), _NODE_SIZE * uintptr(nb - i))
|
|
|
|
last := self.nodeAt(nb)
|
|
*last = Node{}
|
|
|
|
self.setCapAndLen(self.cap(), nb)
|
|
}
|
|
|
|
func (self *Node) removePair(i int) {
|
|
nb := self.len() - 1
|
|
node := self.pairAt(i)
|
|
if i == nb {
|
|
self.setCapAndLen(self.cap(), nb)
|
|
*node = Pair{}
|
|
return
|
|
}
|
|
|
|
from := self.pairAt(i + 1)
|
|
memmove(unsafe.Pointer(node), unsafe.Pointer(from), _PAIR_SIZE * uintptr(nb - i))
|
|
|
|
last := self.pairAt(nb)
|
|
*last = Pair{}
|
|
|
|
self.setCapAndLen(self.cap(), nb)
|
|
}
|
|
|
|
func (self *Node) toGenericArray() ([]interface{}, error) {
|
|
nb := self.len()
|
|
ret := make([]interface{}, nb)
|
|
if nb == 0 {
|
|
return ret, nil
|
|
}
|
|
|
|
/* convert each item */
|
|
var p = (*Node)(self.p)
|
|
x, err := p.Interface()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[0] = x
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
x, err := p.Interface()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[i] = x
|
|
}
|
|
|
|
/* all done */
|
|
return ret, nil
|
|
}
|
|
|
|
func (self *Node) toGenericArrayUseNumber() ([]interface{}, error) {
|
|
nb := self.len()
|
|
ret := make([]interface{}, nb)
|
|
if nb == 0 {
|
|
return ret, nil
|
|
}
|
|
|
|
/* convert each item */
|
|
var p = (*Node)(self.p)
|
|
x, err := p.InterfaceUseNumber()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[0] = x
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
x, err := p.InterfaceUseNumber()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[i] = x
|
|
}
|
|
|
|
/* all done */
|
|
return ret, nil
|
|
}
|
|
|
|
func (self *Node) toGenericArrayUseNode() ([]Node, error) {
|
|
var nb = self.len()
|
|
var out = make([]Node, nb)
|
|
if nb == 0 {
|
|
return out, nil
|
|
}
|
|
|
|
var p = (*Node)(self.p)
|
|
out[0] = *p
|
|
if err := p.Check(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
if err := p.Check(); err != nil {
|
|
return nil, err
|
|
}
|
|
out[i] = *p
|
|
}
|
|
|
|
return out, nil
|
|
}
|
|
|
|
func (self *Node) toGenericObject() (map[string]interface{}, error) {
|
|
nb := self.len()
|
|
ret := make(map[string]interface{}, nb)
|
|
if nb == 0 {
|
|
return ret, nil
|
|
}
|
|
|
|
/* convert each item */
|
|
var p = (*Pair)(self.p)
|
|
x, err := p.Value.Interface()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[p.Key] = x
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
x, err := p.Value.Interface()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[p.Key] = x
|
|
}
|
|
|
|
/* all done */
|
|
return ret, nil
|
|
}
|
|
|
|
|
|
func (self *Node) toGenericObjectUseNumber() (map[string]interface{}, error) {
|
|
nb := self.len()
|
|
ret := make(map[string]interface{}, nb)
|
|
if nb == 0 {
|
|
return ret, nil
|
|
}
|
|
|
|
/* convert each item */
|
|
var p = (*Pair)(self.p)
|
|
x, err := p.Value.InterfaceUseNumber()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[p.Key] = x
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
x, err := p.Value.InterfaceUseNumber()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
ret[p.Key] = x
|
|
}
|
|
|
|
/* all done */
|
|
return ret, nil
|
|
}
|
|
|
|
func (self *Node) toGenericObjectUseNode() (map[string]Node, error) {
|
|
var nb = self.len()
|
|
var out = make(map[string]Node, nb)
|
|
if nb == 0 {
|
|
return out, nil
|
|
}
|
|
|
|
var p = (*Pair)(self.p)
|
|
out[p.Key] = p.Value
|
|
if err := p.Value.Check(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for i := 1; i < nb; i++ {
|
|
p = p.unsafe_next()
|
|
if err := p.Value.Check(); err != nil {
|
|
return nil, err
|
|
}
|
|
out[p.Key] = p.Value
|
|
}
|
|
|
|
/* all done */
|
|
return out, nil
|
|
}
|
|
|
|
/**------------------------------------ Factory Methods ------------------------------------**/
|
|
|
|
var (
|
|
nullNode = Node{t: types.V_NULL}
|
|
trueNode = Node{t: types.V_TRUE}
|
|
falseNode = Node{t: types.V_FALSE}
|
|
|
|
emptyArrayNode = Node{t: types.V_ARRAY}
|
|
emptyObjectNode = Node{t: types.V_OBJECT}
|
|
)
|
|
|
|
// NewRaw creates a node of raw json.
|
|
// If the input json is invalid, NewRaw returns a error Node.
|
|
func NewRaw(json string) Node {
|
|
parser := NewParser(json)
|
|
start, err := parser.skip()
|
|
if err != 0 {
|
|
return *newError(err, err.Message())
|
|
}
|
|
it := switchRawType(parser.s[start])
|
|
if it == _V_NONE {
|
|
return Node{}
|
|
}
|
|
return newRawNode(parser.s[start:parser.p], it)
|
|
}
|
|
|
|
// NewAny creates a node of type V_ANY if any's type isn't Node or *Node,
|
|
// which stores interface{} and can be only used for `.Interface()`\`.MarshalJSON()`.
|
|
func NewAny(any interface{}) Node {
|
|
switch n := any.(type) {
|
|
case Node:
|
|
return n
|
|
case *Node:
|
|
return *n
|
|
default:
|
|
return Node{
|
|
t: _V_ANY,
|
|
v: 0,
|
|
p: unsafe.Pointer(&any),
|
|
}
|
|
}
|
|
}
|
|
|
|
// NewBytes encodes given src with Base64 (RFC 4648), and creates a node of type V_STRING.
|
|
func NewBytes(src []byte) Node {
|
|
if len(src) == 0 {
|
|
panic("empty src bytes")
|
|
}
|
|
out := encodeBase64(src)
|
|
return NewString(out)
|
|
}
|
|
|
|
// NewNull creates a node of type V_NULL
|
|
func NewNull() Node {
|
|
return Node{
|
|
v: 0,
|
|
p: nil,
|
|
t: types.V_NULL,
|
|
}
|
|
}
|
|
|
|
// NewBool creates a node of type bool:
|
|
// If v is true, returns V_TRUE node
|
|
// If v is false, returns V_FALSE node
|
|
func NewBool(v bool) Node {
|
|
var t = types.V_FALSE
|
|
if v {
|
|
t = types.V_TRUE
|
|
}
|
|
return Node{
|
|
v: 0,
|
|
p: nil,
|
|
t: t,
|
|
}
|
|
}
|
|
|
|
// NewNumber creates a json.Number node
|
|
// v must be a decimal string complying with RFC8259
|
|
func NewNumber(v string) Node {
|
|
return Node{
|
|
v: int64(len(v) & _LEN_MASK),
|
|
p: rt.StrPtr(v),
|
|
t: _V_NUMBER,
|
|
}
|
|
}
|
|
|
|
func toNumber(node *Node) json.Number {
|
|
return json.Number(rt.StrFrom(node.p, node.v))
|
|
}
|
|
|
|
func numberToFloat64(node *Node) (float64, error) {
|
|
ret,err := toNumber(node).Float64()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return ret, nil
|
|
}
|
|
|
|
func numberToInt64(node *Node) (int64, error) {
|
|
ret,err := toNumber(node).Int64()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return ret, nil
|
|
}
|
|
|
|
func newBytes(v []byte) Node {
|
|
return Node{
|
|
t: types.V_STRING,
|
|
p: mem2ptr(v),
|
|
v: int64(len(v) & _LEN_MASK),
|
|
}
|
|
}
|
|
|
|
// NewString creates a node of type V_STRING.
|
|
// v is considered to be a valid UTF-8 string,
|
|
// which means it won't be validated and unescaped.
|
|
// when the node is encoded to json, v will be escaped.
|
|
func NewString(v string) Node {
|
|
return Node{
|
|
t: types.V_STRING,
|
|
p: rt.StrPtr(v),
|
|
v: int64(len(v) & _LEN_MASK),
|
|
}
|
|
}
|
|
|
|
// NewArray creates a node of type V_ARRAY,
|
|
// using v as its underlying children
|
|
func NewArray(v []Node) Node {
|
|
return Node{
|
|
t: types.V_ARRAY,
|
|
v: int64(len(v)&_LEN_MASK | cap(v)<<_CAP_BITS),
|
|
p: *(*unsafe.Pointer)(unsafe.Pointer(&v)),
|
|
}
|
|
}
|
|
|
|
func (self *Node) setArray(v []Node) {
|
|
self.t = types.V_ARRAY
|
|
self.setCapAndLen(cap(v), len(v))
|
|
self.p = *(*unsafe.Pointer)(unsafe.Pointer(&v))
|
|
}
|
|
|
|
// NewObject creates a node of type V_OBJECT,
|
|
// using v as its underlying children
|
|
func NewObject(v []Pair) Node {
|
|
return Node{
|
|
t: types.V_OBJECT,
|
|
v: int64(len(v)&_LEN_MASK | cap(v)<<_CAP_BITS),
|
|
p: *(*unsafe.Pointer)(unsafe.Pointer(&v)),
|
|
}
|
|
}
|
|
|
|
func (self *Node) setObject(v []Pair) {
|
|
self.t = types.V_OBJECT
|
|
self.setCapAndLen(cap(v), len(v))
|
|
self.p = *(*unsafe.Pointer)(unsafe.Pointer(&v))
|
|
}
|
|
|
|
type parseObjectStack struct {
|
|
parser Parser
|
|
v []Pair
|
|
}
|
|
|
|
type parseArrayStack struct {
|
|
parser Parser
|
|
v []Node
|
|
}
|
|
|
|
func newLazyArray(p *Parser, v []Node) Node {
|
|
s := new(parseArrayStack)
|
|
s.parser = *p
|
|
s.v = v
|
|
return Node{
|
|
t: _V_ARRAY_LAZY,
|
|
v: int64(len(v)&_LEN_MASK | cap(v)<<_CAP_BITS),
|
|
p: unsafe.Pointer(s),
|
|
}
|
|
}
|
|
|
|
func (self *Node) setLazyArray(p *Parser, v []Node) {
|
|
s := new(parseArrayStack)
|
|
s.parser = *p
|
|
s.v = v
|
|
self.t = _V_ARRAY_LAZY
|
|
self.setCapAndLen(cap(v), len(v))
|
|
self.p = (unsafe.Pointer)(s)
|
|
}
|
|
|
|
func newLazyObject(p *Parser, v []Pair) Node {
|
|
s := new(parseObjectStack)
|
|
s.parser = *p
|
|
s.v = v
|
|
return Node{
|
|
t: _V_OBJECT_LAZY,
|
|
v: int64(len(v)&_LEN_MASK | cap(v)<<_CAP_BITS),
|
|
p: unsafe.Pointer(s),
|
|
}
|
|
}
|
|
|
|
func (self *Node) setLazyObject(p *Parser, v []Pair) {
|
|
s := new(parseObjectStack)
|
|
s.parser = *p
|
|
s.v = v
|
|
self.t = _V_OBJECT_LAZY
|
|
self.setCapAndLen(cap(v), len(v))
|
|
self.p = (unsafe.Pointer)(s)
|
|
}
|
|
|
|
func newRawNode(str string, typ types.ValueType) Node {
|
|
return Node{
|
|
t: _V_RAW | typ,
|
|
p: rt.StrPtr(str),
|
|
v: int64(len(str) & _LEN_MASK),
|
|
}
|
|
}
|
|
|
|
func (self *Node) parseRaw(full bool) {
|
|
raw := rt.StrFrom(self.p, self.v)
|
|
parser := NewParser(raw)
|
|
if full {
|
|
parser.noLazy = true
|
|
parser.skipValue = false
|
|
}
|
|
var e types.ParsingError
|
|
*self, e = parser.Parse()
|
|
if e != 0 {
|
|
*self = *newSyntaxError(parser.syntaxError(e))
|
|
}
|
|
}
|
|
|
|
func newError(err types.ParsingError, msg string) *Node {
|
|
return &Node{
|
|
t: V_ERROR,
|
|
v: int64(err),
|
|
p: unsafe.Pointer(&msg),
|
|
}
|
|
}
|
|
|
|
var typeJumpTable = [256]types.ValueType{
|
|
'"' : types.V_STRING,
|
|
'-' : _V_NUMBER,
|
|
'0' : _V_NUMBER,
|
|
'1' : _V_NUMBER,
|
|
'2' : _V_NUMBER,
|
|
'3' : _V_NUMBER,
|
|
'4' : _V_NUMBER,
|
|
'5' : _V_NUMBER,
|
|
'6' : _V_NUMBER,
|
|
'7' : _V_NUMBER,
|
|
'8' : _V_NUMBER,
|
|
'9' : _V_NUMBER,
|
|
'[' : types.V_ARRAY,
|
|
'f' : types.V_FALSE,
|
|
'n' : types.V_NULL,
|
|
't' : types.V_TRUE,
|
|
'{' : types.V_OBJECT,
|
|
}
|
|
|
|
func switchRawType(c byte) types.ValueType {
|
|
return typeJumpTable[c]
|
|
}
|
|
|
|
func unwrapError(err error) *Node {
|
|
if se, ok := err.(*Node); ok {
|
|
return se
|
|
}else if sse, ok := err.(Node); ok {
|
|
return &sse
|
|
} else {
|
|
msg := err.Error()
|
|
return &Node{
|
|
t: V_ERROR,
|
|
v: 0,
|
|
p: unsafe.Pointer(&msg),
|
|
}
|
|
}
|
|
} |