json

package
v0.19.3 Latest Latest
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 Go to latest Published: Apr 4, 2024 License: Apache-2.0, MIT Imports: 27 Imported by: 2

Documentation

Index

Constants

View Source 
const (
	JSON_KEY_NULL        = '\x00'
	JSON_KEY_NUMBER_NEG  = '\x01'
	JSON_KEY_NUMBER_ZERO = '\x02'
	JSON_KEY_NUMBER_POS  = '\x03'
	JSON_KEY_STRING      = '\x04'
	JSON_KEY_OBJECT      = '\x05'
	JSON_KEY_ARRAY       = '\x06'
	JSON_KEY_FALSE       = '\x07'
	JSON_KEY_TRUE        = '\x08'
	JSON_KEY_DATE        = '\x09'
	JSON_KEY_TIME        = '\x0A'
	JSON_KEY_DATETIME    = '\x0B'
	JSON_KEY_OPAQUE      = '\x0C'
)
View Source 
const MaxDepth = 300

MaxDepth is the maximum depth for nested JSON.

Variables

View Source 
var (
	ValueTrue  = &Value{t: TypeBoolean}
	ValueFalse = &Value{t: TypeBoolean}
	ValueNull  = &Value{t: TypeNull}
)

Functions

func ApplyTransform 

func ApplyTransform(t Transformation, doc *Value, paths []*Path, values []*Value) error

func MarshalSQLValue 

func MarshalSQLValue(buf []byte) (*sqltypes.Value, error)

MarshalSQLValue converts the byte representation of a json value and returns it formatted by MarshalSQLTo

func MatchPath 

func MatchPath(rawJSON, rawPath []byte, match func(value *Value)) error

Types

type NumberType 

type NumberType int32
const (
	NumberTypeUnknown NumberType = iota
	NumberTypeSigned
	NumberTypeUnsigned
	NumberTypeDecimal
	NumberTypeFloat
)

type Object 

type Object struct {
	// contains filtered or unexported fields
}

Object represents JSON object.

Object cannot be used from concurrent goroutines. Use per-goroutine parsers or ParserPool instead.

func (*Object) Add 

func (o *Object) Add(key string, value *Value)

func (*Object) CachedSize 

func (cached *Object) CachedSize(alloc bool) int64

func (*Object) Del 

func (o *Object) Del(key string)

Del deletes the entry with the given key from o.

func (*Object) Get 

func (o *Object) Get(key string) *Value

Get returns the value for the given key in the o.

Returns nil if the value for the given key isn't found.

The returned value is valid until Parse is called on the Parser returned o.

func (*Object) Keys 

func (o *Object) Keys() []string

func (*Object) Len 

func (o *Object) Len() int

Len returns the number of items in the o.

func (*Object) MarshalTo 

func (o *Object) MarshalTo(dst []byte) []byte

MarshalTo appends marshaled o to dst and returns the result.

func (*Object) Set 

func (o *Object) Set(key string, value *Value, t Transformation)

Set sets (key, value) entry in the o.

The value must be unchanged during o lifetime.

func (*Object) String 

func (o *Object) String() string

String returns string representation for the o.

This function is for debugging purposes only. It isn't optimized for speed. See MarshalTo instead.

func (*Object) Visit 

func (o *Object) Visit(f func(key string, v *Value))

Visit calls f for each item in the o in the original order of the parsed JSON.

f cannot hold key and/or v after returning.

type Parser 

type Parser struct {
	// contains filtered or unexported fields
}

Parser parses JSON.

Parser may be re-used for subsequent parsing.

Parser cannot be used from concurrent goroutines. Use per-goroutine parsers or ParserPool instead.

func (*Parser) Parse 

func (p *Parser) Parse(s string) (*Value, error)

Parse parses s containing JSON.

The returned value is valid until the next call to Parse*.

Use Scanner if a stream of JSON values must be parsed.

func (*Parser) ParseBytes 

func (p *Parser) ParseBytes(b []byte) (*Value, error)

ParseBytes parses b containing JSON.

The returned Value is valid until the next call to Parse*.

Use Scanner if a stream of JSON values must be parsed.

type Path 

type Path struct {
	// contains filtered or unexported fields
}

func (*Path) ContainsWildcards 

func (jp *Path) ContainsWildcards() bool

func (*Path) Match 

func (jp *Path) Match(doc *Value, wrap bool, match func(value *Value))

func (*Path) String 

func (jp *Path) String() string

type PathParser 

type PathParser struct {
	// contains filtered or unexported fields
}

func (*PathParser) ParseBytes 

func (p *PathParser) ParseBytes(in []byte) (*Path, error)

type Transformation 

type Transformation int
const (
	Set Transformation = iota
	Insert
	Replace
	Remove
)

type Type 

type Type int32

Type represents JSON type. 

const (
	// TypeNull is JSON null.
	TypeNull Type = iota

	// TypeNumber is JSON number type.
	TypeNumber

	// TypeString is JSON string type.
	TypeString

	// TypeObject is JSON object type.
	TypeObject

	// TypeArray is JSON array type.
	TypeArray

	// TypeBoolean is JSON boolean.
	TypeBoolean

	// TypeDate is JSON date.
	TypeDate

	// TypeTime is JSON time.
	TypeTime

	// TypeDateTime is JSON time.
	TypeDateTime

	// TypeOpaque is JSON opaque type.
	TypeOpaque

	// TypeBit is JSON bit string.
	TypeBit

	// TypeBlob is JSON blob.
	TypeBlob
)

See https://dev.mysql.com/doc/refman/8.0/en/json.html#json-comparison for the ordering here

func (Type) String 

func (t Type) String() string

String returns string representation of t.

type Value 

type Value struct {
	// contains filtered or unexported fields
}

Value represents any JSON value.

Call Type in order to determine the actual type of the JSON value.

Value cannot be used from concurrent goroutines. Use per-goroutine parsers or ParserPool instead.

func NewArray 

func NewArray(vals []*Value) *Value

func NewBit 

func NewBit(raw string) *Value

func NewBlob 

func NewBlob(raw string) *Value

func NewDate 

func NewDate(raw string) *Value

func NewDateTime 

func NewDateTime(raw string) *Value

func NewFromSQL added in v0.18.0 

func NewFromSQL(v sqltypes.Value) (*Value, error)

func NewNumber 

func NewNumber(num string, n NumberType) *Value

func NewObject 

func NewObject(obj Object) *Value

func NewOpaqueValue 

func NewOpaqueValue(raw string) *Value

func NewString 

func NewString(raw string) *Value

func NewTime 

func NewTime(raw string) *Value

func (*Value) Array 

func (v *Value) Array() ([]*Value, bool)

Array returns the underlying JSON array for the v.

func (*Value) Bool 

func (v *Value) Bool() (bool, bool)

Bool returns the underlying JSON bool for the v.

Use GetBool if you don't need error handling.

func (*Value) CachedSize 

func (cached *Value) CachedSize(alloc bool) int64

func (*Value) Date 

func (v *Value) Date() (datetime.Date, bool)

func (*Value) DateTime 

func (v *Value) DateTime() (datetime.DateTime, bool)

func (*Value) Decimal 

func (v *Value) Decimal() (decimal.Decimal, bool)

func (*Value) DelArrayItem 

func (v *Value) DelArrayItem(n int)

func (*Value) Depth 

func (v *Value) Depth() int

func (*Value) Float64 

func (v *Value) Float64() (float64, bool)

func (*Value) Hash 

func (v *Value) Hash(h *vthash.Hasher)

func (*Value) Int64 

func (v *Value) Int64() (int64, bool)

func (*Value) Len 

func (v *Value) Len() int

func (*Value) MarshalDate 

func (v *Value) MarshalDate() string

func (*Value) MarshalDateTime 

func (v *Value) MarshalDateTime() string

func (*Value) MarshalSQLTo 

func (v *Value) MarshalSQLTo(dst []byte) []byte

MarshalSQLTo appends marshaled v to dst and returns the result in the form like `JSON_OBJECT` or `JSON_ARRAY` to ensure we don't lose any type information.

func (*Value) MarshalTime 

func (v *Value) MarshalTime() string

func (*Value) MarshalTo 

func (v *Value) MarshalTo(dst []byte) []byte

MarshalTo appends marshaled v to dst and returns the result.

func (*Value) NumberType 

func (v *Value) NumberType() NumberType

func (*Value) Object 

func (v *Value) Object() (*Object, bool)

Object returns the underlying JSON object for the v.

func (*Value) Raw 

func (v *Value) Raw() string

func (*Value) SQLType 

func (v *Value) SQLType() sqltypes.Type

func (*Value) SetArrayItem 

func (v *Value) SetArrayItem(idx int, value *Value, t Transformation)

SetArrayItem sets the value in the array v at idx position.

The value must be unchanged during v lifetime.

func (*Value) String 

func (v *Value) String() string

String returns string representation of the v.

The function is for debugging purposes only. It isn't optimized for speed. See MarshalTo instead.

Don't confuse this function with StringBytes, which must be called for obtaining the underlying JSON string for the v.

func (*Value) StringBytes 

func (v *Value) StringBytes() ([]byte, bool)

StringBytes returns the underlying JSON string for the v.

func (*Value) Time 

func (v *Value) Time() (datetime.Time, bool)

func (*Value) ToBoolean 

func (v *Value) ToBoolean() bool

func (*Value) ToRawBytes 

func (v *Value) ToRawBytes() []byte

func (*Value) ToUnencodedBytes 

func (v *Value) ToUnencodedBytes() []byte

func (*Value) Type 

func (v *Value) Type() Type

Type returns the type of the v.

func (*Value) Uint64 

func (v *Value) Uint64() (uint64, bool)

func (*Value) WeightString added in v0.18.0 

func (v *Value) WeightString(dst []byte) []byte

Source Files

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