Version: v0.19.0 Latest Latest

This package is not in the latest version of its module.

Go to latest
Published: Jun 30, 2021 License: BSD-3-Clause Imports: 2 Imported by: 0




This section is empty.


This section is empty.


func Copy

func Copy(dst, src Value) int

Copy copies the contents of src into dst until either dst has been filled or src has been exhausted.

func DeepEqual

func DeepEqual(x, y interface{}) bool

func Swapper

func Swapper(slice interface{}) func(i, j int)


type Kind

type Kind uintptr
const (
	Invalid Kind = iota

Copied from reflect/type.go

func (Kind) String

func (k Kind) String() string

type MapIter

type MapIter struct {

func (*MapIter) Key

func (it *MapIter) Key() Value

func (*MapIter) Next

func (it *MapIter) Next() bool

func (*MapIter) Value

func (it *MapIter) Value() Value

type SliceHeader

type SliceHeader struct {
	Data uintptr
	Len  uintptr
	Cap  uintptr

type StringHeader

type StringHeader struct {
	Data uintptr
	Len  uintptr

type StructField

type StructField struct {
	// Name indicates the field name.
	Name string

	// PkgPath is the package path where the struct containing this field is
	// declared for unexported fields, or the empty string for exported fields.
	PkgPath string

	Type      Type
	Tag       StructTag // field tag string
	Anonymous bool
	Offset    uintptr

A StructField describes a single field in a struct.

type StructTag

type StructTag string

A StructTag is the tag string in a struct field.

func (StructTag) Get

func (tag StructTag) Get(key string) string

Get returns the value associated with key in the tag string.

func (StructTag) Lookup

func (tag StructTag) Lookup(key string) (value string, ok bool)

Lookup returns the value associated with key in the tag string.

type Type

type Type interface {

	// Align returns the alignment in bytes of a value of
	// this type when allocated in memory.
	Align() int

	// FieldAlign returns the alignment in bytes of a value of
	// this type when used as a field in a struct.
	FieldAlign() int

	// NumMethod returns the number of exported methods in the type's method set.
	NumMethod() int

	// Name returns the type's name within its package for a defined type.
	// For other (non-defined) types it returns the empty string.
	Name() string

	// Size returns the number of bytes needed to store
	// a value of the given type; it is analogous to unsafe.Sizeof.
	Size() uintptr

	// String returns a string representation of the type.
	// The string representation may use shortened package names
	// (e.g., base64 instead of "encoding/base64") and is not
	// guaranteed to be unique among types. To test for type identity,
	// compare the Types directly.
	String() string

	// Kind returns the specific kind of this type.
	Kind() Kind

	// Implements reports whether the type implements the interface type u.
	Implements(u Type) bool

	// AssignableTo reports whether a value of the type is assignable to type u.
	AssignableTo(u Type) bool

	// ConvertibleTo reports whether a value of the type is convertible to type u.
	ConvertibleTo(u Type) bool

	// Comparable reports whether values of this type are comparable.
	Comparable() bool

	// Bits returns the size of the type in bits.
	// It panics if the type's Kind is not one of the
	// sized or unsized Int, Uint, Float, or Complex kinds.
	Bits() int

	// Elem returns a type's element type.
	// It panics if the type's Kind is not Array, Chan, Map, Ptr, or Slice.
	Elem() Type

	// Field returns a struct type's i'th field.
	// It panics if the type's Kind is not Struct.
	// It panics if i is not in the range [0, NumField()).
	Field(i int) StructField

	// Key returns a map type's key type.
	// It panics if the type's Kind is not Map.
	Key() Type

	// Len returns an array type's length.
	// It panics if the type's Kind is not Array.
	Len() int

	// NumField returns a struct type's field count.
	// It panics if the type's Kind is not Struct.
	NumField() int

Type is the representation of a Go type.

Not all methods apply to all kinds of types. Restrictions, if any, are noted in the documentation for each method. Use the Kind method to find out the kind of type before calling kind-specific methods. Calling a method inappropriate to the kind of type causes a run-time panic.

Type values are comparable, such as with the == operator, so they can be used as map keys. Two Type values are equal if they represent identical types.

func PtrTo

func PtrTo(t Type) Type

func TypeOf

func TypeOf(i interface{}) Type

type TypeError

type TypeError struct {
	Method string

TypeError is the error that is used in a panic when invoking a method on a type that is not applicable to that type.

func (*TypeError) Error

func (e *TypeError) Error() string

type Value

type Value struct {
	// contains filtered or unexported fields

func Append

func Append(s Value, x ...Value) Value

Append appends the values x to a slice s and returns the resulting slice. As in Go, each x's value must be assignable to the slice's element type.

func AppendSlice

func AppendSlice(s, t Value) Value

AppendSlice appends a slice t to a slice s and returns the resulting slice. The slices s and t must have the same element type.

func Indirect

func Indirect(v Value) Value

func MakeFunc

func MakeFunc(typ Type, fn func(args []Value) (results []Value)) Value

func MakeMap

func MakeMap(typ Type) Value

MakeMap creates a new map with the specified type.

func MakeSlice

func MakeSlice(typ Type, len, cap int) Value

func New

func New(typ Type) Value

New is the reflect equivalent of the new(T) keyword, returning a pointer to a new value of the given type.

func ValueOf

func ValueOf(i interface{}) Value

func Zero

func Zero(typ Type) Value

func (Value) Addr

func (v Value) Addr() Value

func (Value) Bool

func (v Value) Bool() bool

func (Value) Bytes

func (v Value) Bytes() []byte

func (Value) Call

func (v Value) Call(in []Value) []Value

func (Value) CanAddr

func (v Value) CanAddr() bool

func (Value) CanInterface

func (v Value) CanInterface() bool

func (Value) CanSet

func (v Value) CanSet() bool

func (Value) Cap

func (v Value) Cap() int

Cap returns the capacity of this value for arrays, channels and slices. For other types, it panics.

func (Value) Complex

func (v Value) Complex() complex128

func (Value) Convert

func (v Value) Convert(t Type) Value

func (Value) Elem

func (v Value) Elem() Value

func (Value) Field

func (v Value) Field(i int) Value

Field returns the value of the i'th field of this struct.

func (Value) FieldByIndex

func (v Value) FieldByIndex(index []int) Value

FieldByIndex returns the nested field corresponding to index.

func (Value) FieldByName

func (v Value) FieldByName(name string) Value

func (Value) Float

func (v Value) Float() float64

func (Value) Index

func (v Value) Index(i int) Value

func (Value) Int

func (v Value) Int() int64

func (Value) Interface

func (v Value) Interface() interface{}

func (Value) IsNil

func (v Value) IsNil() bool

IsNil returns whether the value is the nil value. It panics if the value Kind is not a channel, map, pointer, function, slice, or interface.

func (Value) IsValid

func (v Value) IsValid() bool

func (Value) Kind

func (v Value) Kind() Kind

func (Value) Len

func (v Value) Len() int

Len returns the length of this value for slices, strings, arrays, channels, and maps. For other types, it panics.

func (Value) MapIndex

func (v Value) MapIndex(key Value) Value

func (Value) MapKeys

func (v Value) MapKeys() []Value

func (Value) MapRange

func (v Value) MapRange() *MapIter

func (Value) NumField

func (v Value) NumField() int

NumField returns the number of fields of this struct. It panics for other value types.

func (Value) NumMethod

func (v Value) NumMethod() int

func (Value) OverflowFloat

func (v Value) OverflowFloat(x float64) bool

func (Value) OverflowInt

func (v Value) OverflowInt(x int64) bool

func (Value) OverflowUint

func (v Value) OverflowUint(x uint64) bool

func (Value) Pointer

func (v Value) Pointer() uintptr

Pointer returns the underlying pointer of the given value for the following types: chan, map, pointer, unsafe.Pointer, slice, func.

func (Value) RawType

func (v Value) RawType() rawType

Internal function only, do not use.

RawType returns the raw, underlying type code. It is used in the runtime package and needs to be exported for the runtime package to access it.

func (Value) Set

func (v Value) Set(x Value)

func (Value) SetBool

func (v Value) SetBool(x bool)

func (Value) SetBytes

func (v Value) SetBytes(x []byte)

func (Value) SetCap

func (v Value) SetCap(n int)

func (Value) SetComplex

func (v Value) SetComplex(x complex128)

func (Value) SetFloat

func (v Value) SetFloat(x float64)

func (Value) SetInt

func (v Value) SetInt(x int64)

func (Value) SetLen

func (v Value) SetLen(n int)

func (Value) SetMapIndex

func (v Value) SetMapIndex(key, elem Value)

func (Value) SetString

func (v Value) SetString(x string)

func (Value) SetUint

func (v Value) SetUint(x uint64)

func (Value) Slice

func (v Value) Slice(i, j int) Value

func (Value) String

func (v Value) String() string

func (Value) Type

func (v Value) Type() Type

func (Value) Uint

func (v Value) Uint() uint64

type ValueError

type ValueError struct {
	Method string

func (*ValueError) Error

func (e *ValueError) Error() string

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to