objects

package
v1.2.1 Latest Latest
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 Go to latest Published: Feb 2, 2019 License: MIT Imports: 9 Imported by: 3

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var Builtins = []NamedBuiltinFunc{
	{
		Name: "print",
		Func: builtinPrint,
	},
	{
		Name: "printf",
		Func: builtinPrintf,
	},
	{
		Name: "sprintf",
		Func: builtinSprintf,
	},
	{
		Name: "len",
		Func: builtinLen,
	},
	{
		Name: "copy",
		Func: builtinCopy,
	},
	{
		Name: "append",
		Func: builtinAppend,
	},
	{
		Name: "string",
		Func: builtinString,
	},
	{
		Name: "int",
		Func: builtinInt,
	},
	{
		Name: "bool",
		Func: builtinBool,
	},
	{
		Name: "float",
		Func: builtinFloat,
	},
	{
		Name: "char",
		Func: builtinChar,
	},
	{
		Name: "bytes",
		Func: builtinBytes,
	},
	{
		Name: "time",
		Func: builtinTime,
	},
	{
		Name: "is_int",
		Func: builtinIsInt,
	},
	{
		Name: "is_float",
		Func: builtinIsFloat,
	},
	{
		Name: "is_string",
		Func: builtinIsString,
	},
	{
		Name: "is_bool",
		Func: builtinIsBool,
	},
	{
		Name: "is_char",
		Func: builtinIsChar,
	},
	{
		Name: "is_bytes",
		Func: builtinIsBytes,
	},
	{
		Name: "is_array",
		Func: builtinIsArray,
	},
	{
		Name: "is_immutable_array",
		Func: builtinIsImmutableArray,
	},
	{
		Name: "is_map",
		Func: builtinIsMap,
	},
	{
		Name: "is_immutable_map",
		Func: builtinIsImmutableMap,
	},
	{
		Name: "is_time",
		Func: builtinIsTime,
	},
	{
		Name: "is_error",
		Func: builtinIsError,
	},
	{
		Name: "is_undefined",
		Func: builtinIsUndefined,
	},
	{
		Name: "to_json",
		Func: builtinToJSON,
	},
	{
		Name: "from_json",
		Func: builtinFromJSON,
	},
	{
		Name: "type_name",
		Func: builtinTypeName,
	},
}

Builtins contains all default builtin functions.

View Source 
var ErrIndexOutOfBounds = errors.New("index out of bounds")

ErrIndexOutOfBounds is an error where a given index is out of the bounds.

View Source 
var ErrInvalidIndexType = errors.New("invalid index type")

ErrInvalidIndexType means the type is not supported as an index.

View Source 
var ErrInvalidOperator = errors.New("invalid operator")

ErrInvalidOperator represents an error for invalid operator usage.

View Source 
var ErrInvalidTypeConversion = errors.New("invalid type conversion")

ErrInvalidTypeConversion represents an invalid type conversion error.

View Source 
var ErrNotIndexAssignable = errors.New("type is not index-assignable")

ErrNotIndexAssignable means the type is not index-assignable.

View Source 
var ErrNotIndexable = errors.New("type is not indexable")

ErrNotIndexable means the type is not indexable.

View Source 
var ErrWrongNumArguments = errors.New("wrong number of arguments")

ErrWrongNumArguments represents a wrong number of arguments error.

Functions

func ToBool 

func ToBool(o Object) (v bool, ok bool)

ToBool will try to convert object o to bool value.

func ToByteSlice 

func ToByteSlice(o Object) (v []byte, ok bool)

ToByteSlice will try to convert object o to []byte value.

func ToFloat64 

func ToFloat64(o Object) (v float64, ok bool)

ToFloat64 will try to convert object o to float64 value.

func ToInt 

func ToInt(o Object) (v int, ok bool)

ToInt will try to convert object o to int value.

func ToInt64 

func ToInt64(o Object) (v int64, ok bool)

ToInt64 will try to convert object o to int64 value.

func ToRune 

func ToRune(o Object) (v rune, ok bool)

ToRune will try to convert object o to rune value.

func ToString 

func ToString(o Object) (v string, ok bool)

ToString will try to convert object o to string value.

func ToTime 

func ToTime(o Object) (v time.Time, ok bool)

ToTime will try to convert object o to time.Time value.

Types

type Array 

type Array struct {
	Value []Object
}

Array represents an array of objects.

func (*Array) BinaryOp 

func (o *Array) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Array) Copy 

func (o *Array) Copy() Object

Copy returns a copy of the type.

func (*Array) Equals 

func (o *Array) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Array) IndexGet 

func (o *Array) IndexGet(index Object) (res Object, err error)

IndexGet returns an element at a given index.

func (*Array) IndexSet 

func (o *Array) IndexSet(index, value Object) (err error)

IndexSet sets an element at a given index.

func (*Array) IsFalsy 

func (o *Array) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Array) Iterate 

func (o *Array) Iterate() Iterator

Iterate creates an array iterator.

func (*Array) String 

func (o *Array) String() string

func (*Array) TypeName 

func (o *Array) TypeName() string

TypeName returns the name of the type.

type ArrayIterator 

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

ArrayIterator is an iterator for an array.

func (*ArrayIterator) BinaryOp 

func (i *ArrayIterator) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*ArrayIterator) Copy 

func (i *ArrayIterator) Copy() Object

Copy returns a copy of the type.

func (*ArrayIterator) Equals 

func (i *ArrayIterator) Equals(Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*ArrayIterator) IsFalsy 

func (i *ArrayIterator) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*ArrayIterator) Key 

func (i *ArrayIterator) Key() Object

Key returns the key or index value of the current element.

func (*ArrayIterator) Next 

func (i *ArrayIterator) Next() bool

Next returns true if there are more elements to iterate.

func (*ArrayIterator) String 

func (i *ArrayIterator) String() string

func (*ArrayIterator) TypeName 

func (i *ArrayIterator) TypeName() string

TypeName returns the name of the type.

func (*ArrayIterator) Value 

func (i *ArrayIterator) Value() Object

Value returns the value of the current element.

type Bool 

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

Bool represents a boolean value.

func (*Bool) BinaryOp 

func (o *Bool) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Bool) Copy 

func (o *Bool) Copy() Object

Copy returns a copy of the type.

func (*Bool) Equals 

func (o *Bool) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Bool) GobDecode 

func (o *Bool) GobDecode(b []byte) (err error)

GobDecode decodes bool value from input bytes.

func (*Bool) GobEncode 

func (o *Bool) GobEncode() (b []byte, err error)

GobEncode encodes bool values into bytes.

func (*Bool) IsFalsy 

func (o *Bool) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Bool) String 

func (o *Bool) String() string

func (*Bool) TypeName 

func (o *Bool) TypeName() string

TypeName returns the name of the type.

type Break 

type Break struct{}

Break represents a break statement.

func (*Break) BinaryOp 

func (o *Break) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Break) Copy 

func (o *Break) Copy() Object

Copy returns a copy of the type.

func (*Break) Equals 

func (o *Break) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Break) IsFalsy 

func (o *Break) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Break) String 

func (o *Break) String() string

func (*Break) TypeName 

func (o *Break) TypeName() string

TypeName returns the name of the type.

type BuiltinFunction 

type BuiltinFunction struct {
	Value CallableFunc
}

BuiltinFunction represents a builtin function.

func (*BuiltinFunction) BinaryOp 

func (o *BuiltinFunction) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*BuiltinFunction) Call 

func (o *BuiltinFunction) Call(args ...Object) (Object, error)

Call executes a builtin function.

func (*BuiltinFunction) Copy 

func (o *BuiltinFunction) Copy() Object

Copy returns a copy of the type.

func (*BuiltinFunction) Equals 

func (o *BuiltinFunction) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*BuiltinFunction) IsFalsy 

func (o *BuiltinFunction) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*BuiltinFunction) String 

func (o *BuiltinFunction) String() string

func (*BuiltinFunction) TypeName 

func (o *BuiltinFunction) TypeName() string

TypeName returns the name of the type.

type Bytes 

type Bytes struct {
	Value []byte
}

Bytes represents a byte array.

func (*Bytes) BinaryOp 

func (o *Bytes) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Bytes) Copy 

func (o *Bytes) Copy() Object

Copy returns a copy of the type.

func (*Bytes) Equals 

func (o *Bytes) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Bytes) IndexGet 

func (o *Bytes) IndexGet(index Object) (res Object, err error)

IndexGet returns an element (as Int) at a given index.

func (*Bytes) IsFalsy 

func (o *Bytes) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Bytes) String 

func (o *Bytes) String() string

func (*Bytes) TypeName 

func (o *Bytes) TypeName() string

TypeName returns the name of the type.

type Callable 

type Callable interface {
	// Call should take an arbitrary number of arguments
	// and returns a return value and/or an error,
	// which the VM will consider as a run-time error.
	Call(args ...Object) (ret Object, err error)
}

Callable represents an object that can be called like a function.

type CallableFunc 

type CallableFunc func(args ...Object) (ret Object, err error)

CallableFunc is a function signature for the callable functions.

type Char 

type Char struct {
	Value rune
}

Char represents a character value.

func (*Char) BinaryOp 

func (o *Char) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Char) Copy 

func (o *Char) Copy() Object

Copy returns a copy of the type.

func (*Char) Equals 

func (o *Char) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Char) IsFalsy 

func (o *Char) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Char) String 

func (o *Char) String() string

func (*Char) TypeName 

func (o *Char) TypeName() string

TypeName returns the name of the type.

type Closure 

type Closure struct {
	Fn   *CompiledFunction
	Free []*Object
}

Closure represents a function closure.

func (*Closure) BinaryOp 

func (o *Closure) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Closure) Copy 

func (o *Closure) Copy() Object

Copy returns a copy of the type.

func (*Closure) Equals 

func (o *Closure) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Closure) IsFalsy 

func (o *Closure) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Closure) String 

func (o *Closure) String() string

func (*Closure) TypeName 

func (o *Closure) TypeName() string

TypeName returns the name of the type.

type CompiledFunction 

type CompiledFunction struct {
	Instructions  []byte
	NumLocals     int
	NumParameters int
}

CompiledFunction represents a compiled function.

func (*CompiledFunction) BinaryOp 

func (o *CompiledFunction) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*CompiledFunction) Copy 

func (o *CompiledFunction) Copy() Object

Copy returns a copy of the type.

func (*CompiledFunction) Equals 

func (o *CompiledFunction) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*CompiledFunction) IsFalsy 

func (o *CompiledFunction) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*CompiledFunction) String 

func (o *CompiledFunction) String() string

func (*CompiledFunction) TypeName 

func (o *CompiledFunction) TypeName() string

TypeName returns the name of the type.

type CompiledModule 

type CompiledModule struct {
	Instructions []byte         // compiled instructions
	Globals      map[string]int // global variable name-to-index map
}

CompiledModule represents a compiled module.

func (*CompiledModule) BinaryOp 

func (o *CompiledModule) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*CompiledModule) Copy 

func (o *CompiledModule) Copy() Object

Copy returns a copy of the type.

func (*CompiledModule) Equals 

func (o *CompiledModule) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*CompiledModule) IsFalsy 

func (o *CompiledModule) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*CompiledModule) String 

func (o *CompiledModule) String() string

func (*CompiledModule) TypeName 

func (o *CompiledModule) TypeName() string

TypeName returns the name of the type.

type Continue 

type Continue struct {
}

Continue represents a continue statement.

func (*Continue) BinaryOp 

func (o *Continue) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Continue) Copy 

func (o *Continue) Copy() Object

Copy returns a copy of the type.

func (*Continue) Equals 

func (o *Continue) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Continue) IsFalsy 

func (o *Continue) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Continue) String 

func (o *Continue) String() string

func (*Continue) TypeName 

func (o *Continue) TypeName() string

TypeName returns the name of the type.

type Error 

type Error struct {
	Value Object
}

Error represents a string value.

func (*Error) BinaryOp 

func (o *Error) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Error) Copy 

func (o *Error) Copy() Object

Copy returns a copy of the type.

func (*Error) Equals 

func (o *Error) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Error) IsFalsy 

func (o *Error) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Error) String 

func (o *Error) String() string

func (*Error) TypeName 

func (o *Error) TypeName() string

TypeName returns the name of the type.

type Float 

type Float struct {
	Value float64
}

Float represents a floating point number value.

func (*Float) BinaryOp 

func (o *Float) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Float) Copy 

func (o *Float) Copy() Object

Copy returns a copy of the type.

func (*Float) Equals 

func (o *Float) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Float) IsFalsy 

func (o *Float) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Float) String 

func (o *Float) String() string

func (*Float) TypeName 

func (o *Float) TypeName() string

TypeName returns the name of the type.

type ImmutableArray 

type ImmutableArray struct {
	Value []Object
}

ImmutableArray represents an immutable array of objects.

func (*ImmutableArray) BinaryOp 

func (o *ImmutableArray) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*ImmutableArray) Copy 

func (o *ImmutableArray) Copy() Object

Copy returns a copy of the type.

func (*ImmutableArray) Equals 

func (o *ImmutableArray) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*ImmutableArray) IndexGet 

func (o *ImmutableArray) IndexGet(index Object) (res Object, err error)

IndexGet returns an element at a given index.

func (*ImmutableArray) IsFalsy 

func (o *ImmutableArray) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*ImmutableArray) Iterate 

func (o *ImmutableArray) Iterate() Iterator

Iterate creates an array iterator.

func (*ImmutableArray) String 

func (o *ImmutableArray) String() string

func (*ImmutableArray) TypeName 

func (o *ImmutableArray) TypeName() string

TypeName returns the name of the type.

type ImmutableMap 

type ImmutableMap struct {
	Value map[string]Object
}

ImmutableMap represents an immutable map object.

func (*ImmutableMap) BinaryOp 

func (o *ImmutableMap) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*ImmutableMap) Copy 

func (o *ImmutableMap) Copy() Object

Copy returns a copy of the type.

func (*ImmutableMap) Equals 

func (o *ImmutableMap) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*ImmutableMap) IndexGet 

func (o *ImmutableMap) IndexGet(index Object) (res Object, err error)

IndexGet returns the value for the given key.

func (*ImmutableMap) IsFalsy 

func (o *ImmutableMap) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*ImmutableMap) Iterate 

func (o *ImmutableMap) Iterate() Iterator

Iterate creates an immutable map iterator.

func (*ImmutableMap) String 

func (o *ImmutableMap) String() string

func (*ImmutableMap) TypeName 

func (o *ImmutableMap) TypeName() string

TypeName returns the name of the type.

type IndexAssignable 

type IndexAssignable interface {
	// IndexSet should take an index Object and a value Object.
	// If an error is returned, it will be treated as a run-time error.
	IndexSet(index, value Object) error
}

IndexAssignable is an object that can take an index and a value on the left-hand side of the assignment statement.

type Indexable 

type Indexable interface {
	// IndexGet should take an index Object and return a result Object or an error.
	// If error is returned, the runtime will treat it as a run-time error and ignore returned value.
	// If nil is returned as value, it will be converted to Undefined value by the runtime.
	IndexGet(index Object) (value Object, err error)
}

Indexable is an object that can take an index and return an object.

type Int 

type Int struct {
	Value int64
}

Int represents an integer value.

func (*Int) BinaryOp 

func (o *Int) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Int) Copy 

func (o *Int) Copy() Object

Copy returns a copy of the type.

func (*Int) Equals 

func (o *Int) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Int) IsFalsy 

func (o *Int) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Int) String 

func (o *Int) String() string

func (*Int) TypeName 

func (o *Int) TypeName() string

TypeName returns the name of the type.

type Iterable 

type Iterable interface {
	// Iterate should return an Iterator for the type.
	Iterate() Iterator
}

Iterable represents an object that has iterator.

type Iterator 

type Iterator interface {
	Object

	// Next returns true if there are more elements to iterate.
	Next() bool

	// Key returns the key or index value of the current element.
	Key() Object

	// Value returns the value of the current element.
	Value() Object
}

Iterator represents an iterator for underlying data type.

type Map 

type Map struct {
	Value map[string]Object
}

Map represents a map of objects.

func (*Map) BinaryOp 

func (o *Map) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Map) Copy 

func (o *Map) Copy() Object

Copy returns a copy of the type.

func (*Map) Equals 

func (o *Map) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Map) IndexGet 

func (o *Map) IndexGet(index Object) (res Object, err error)

IndexGet returns the value for the given key.

func (*Map) IndexSet 

func (o *Map) IndexSet(index, value Object) (err error)

IndexSet sets the value for the given key.

func (*Map) IsFalsy 

func (o *Map) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Map) Iterate 

func (o *Map) Iterate() Iterator

Iterate creates a map iterator.

func (*Map) String 

func (o *Map) String() string

func (*Map) TypeName 

func (o *Map) TypeName() string

TypeName returns the name of the type.

type MapIterator 

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

MapIterator represents an iterator for the map.

func (*MapIterator) BinaryOp 

func (i *MapIterator) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*MapIterator) Copy 

func (i *MapIterator) Copy() Object

Copy returns a copy of the type.

func (*MapIterator) Equals 

func (i *MapIterator) Equals(Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*MapIterator) IsFalsy 

func (i *MapIterator) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*MapIterator) Key 

func (i *MapIterator) Key() Object

Key returns the key or index value of the current element.

func (*MapIterator) Next 

func (i *MapIterator) Next() bool

Next returns true if there are more elements to iterate.

func (*MapIterator) String 

func (i *MapIterator) String() string

func (*MapIterator) TypeName 

func (i *MapIterator) TypeName() string

TypeName returns the name of the type.

func (*MapIterator) Value 

func (i *MapIterator) Value() Object

Value returns the value of the current element.

type NamedBuiltinFunc 

type NamedBuiltinFunc struct {
	Name string
	Func CallableFunc
}

NamedBuiltinFunc is a named builtin function.

type Object 

type Object interface {
	// TypeName should return the name of the type.
	TypeName() string

	// String should return a string representation of the type's value.
	String() string

	// BinaryOp should return another object that is the result of
	// a given binary operator and a right-hand side object.
	// If BinaryOp returns an error, the VM will treat it as a run-time error.
	BinaryOp(op token.Token, rhs Object) (Object, error)

	// IsFalsy should return true if the value of the type
	// should be considered as falsy.
	IsFalsy() bool

	// Equals should return true if the value of the type
	// should be considered as equal to the value of another object.
	Equals(another Object) bool

	// Copy should return a copy of the type (and its value).
	// Copy function will be used for copy() builtin function
	// which is expected to deep-copy the values generally.
	Copy() Object
}

Object represents an object in the VM. 

var (
	// TrueValue represents a true value.
	TrueValue Object = &Bool{value: true}

	// FalseValue represents a false value.
	FalseValue Object = &Bool{value: false}

	// UndefinedValue represents an undefined value.
	UndefinedValue Object = &Undefined{}
)

func FromInterface 

func FromInterface(v interface{}) (Object, error)

FromInterface will attempt to convert an interface{} v to a Tengo Object

type ReturnValue 

type ReturnValue struct {
	Value Object
}

ReturnValue represents a value that is being returned.

func (*ReturnValue) BinaryOp 

func (o *ReturnValue) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*ReturnValue) Copy 

func (o *ReturnValue) Copy() Object

Copy returns a copy of the type.

func (*ReturnValue) Equals 

func (o *ReturnValue) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*ReturnValue) IsFalsy 

func (o *ReturnValue) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*ReturnValue) String 

func (o *ReturnValue) String() string

func (*ReturnValue) TypeName 

func (o *ReturnValue) TypeName() string

TypeName returns the name of the type.

type String 

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

String represents a string value.

func (*String) BinaryOp 

func (o *String) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*String) Copy 

func (o *String) Copy() Object

Copy returns a copy of the type.

func (*String) Equals 

func (o *String) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*String) IndexGet 

func (o *String) IndexGet(index Object) (res Object, err error)

IndexGet returns a character at a given index.

func (*String) IsFalsy 

func (o *String) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*String) Iterate 

func (o *String) Iterate() Iterator

Iterate creates a string iterator.

func (*String) String 

func (o *String) String() string

func (*String) TypeName 

func (o *String) TypeName() string

TypeName returns the name of the type.

type StringIterator 

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

StringIterator represents an iterator for a string.

func (*StringIterator) BinaryOp 

func (i *StringIterator) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*StringIterator) Copy 

func (i *StringIterator) Copy() Object

Copy returns a copy of the type.

func (*StringIterator) Equals 

func (i *StringIterator) Equals(Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*StringIterator) IsFalsy 

func (i *StringIterator) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*StringIterator) Key 

func (i *StringIterator) Key() Object

Key returns the key or index value of the current element.

func (*StringIterator) Next 

func (i *StringIterator) Next() bool

Next returns true if there are more elements to iterate.

func (*StringIterator) String 

func (i *StringIterator) String() string

func (*StringIterator) TypeName 

func (i *StringIterator) TypeName() string

TypeName returns the name of the type.

func (*StringIterator) Value 

func (i *StringIterator) Value() Object

Value returns the value of the current element.

type Time 

type Time struct {
	Value time.Time
}

Time represents a time value.

func (*Time) BinaryOp 

func (o *Time) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Time) Copy 

func (o *Time) Copy() Object

Copy returns a copy of the type.

func (*Time) Equals 

func (o *Time) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Time) IsFalsy 

func (o *Time) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Time) String 

func (o *Time) String() string

func (*Time) TypeName 

func (o *Time) TypeName() string

TypeName returns the name of the type.

type Undefined 

type Undefined struct{}

Undefined represents an undefined value.

func (*Undefined) BinaryOp 

func (o *Undefined) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*Undefined) Copy 

func (o *Undefined) Copy() Object

Copy returns a copy of the type.

func (*Undefined) Equals 

func (o *Undefined) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*Undefined) IsFalsy 

func (o *Undefined) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*Undefined) String 

func (o *Undefined) String() string

func (*Undefined) TypeName 

func (o *Undefined) TypeName() string

TypeName returns the name of the type.

type UserFunction 

type UserFunction struct {
	Value CallableFunc
}

UserFunction represents a user function.

func (*UserFunction) BinaryOp 

func (o *UserFunction) BinaryOp(op token.Token, rhs Object) (Object, error)

BinaryOp returns another object that is the result of a given binary operator and a right-hand side object.

func (*UserFunction) Call 

func (o *UserFunction) Call(args ...Object) (Object, error)

Call invokes a user function.

func (*UserFunction) Copy 

func (o *UserFunction) Copy() Object

Copy returns a copy of the type.

func (*UserFunction) Equals 

func (o *UserFunction) Equals(x Object) bool

Equals returns true if the value of the type is equal to the value of another object.

func (*UserFunction) IsFalsy 

func (o *UserFunction) IsFalsy() bool

IsFalsy returns true if the value of the type is falsy.

func (*UserFunction) String 

func (o *UserFunction) String() string

func (*UserFunction) TypeName 

func (o *UserFunction) TypeName() string

TypeName returns the name of the type.

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