evaluator

Documentation

Index

• Constants
• type Array
  • func (a *Array) Inspect() string
  • func (a *Array) Iter() bool
  • func (a *Array) Type() Type
• type Boolean
  • func (b *Boolean) HashKey() HashKey
  • func (b *Boolean) Inspect() string
  • func (b *Boolean) Type() Type
• type Break
  • func (b *Break) Inspect() string
  • func (b *Break) Type() Type
• type Builtin
  • func (b *Builtin) Inspect() string
  • func (b *Builtin) Type() Type
• type BuiltinFunction
• type Continue
  • func (c *Continue) Inspect() string
  • func (c *Continue) Type() Type
• type Environment
  • func NewEnclosedEnvironment(outer *Environment) *Environment
  • func NewEnvironment() *Environment
  • func (e *Environment) Get(name string) (Object, bool)
  • func (e *Environment) Set(name string, val Object) Object
• type Error
  • func NewError(format string, a ...interface{}) *Error
  • func (e *Error) Inspect() string
  • func (e *Error) Type() Type
• type Float
  • func (i *Float) HashKey() HashKey
  • func (i *Float) Inspect() string
  • func (i *Float) Type() Type
• type Function
  • func (f *Function) Inspect() string
  • func (f *Function) Type() Type
• type Hash
  • func (h *Hash) Inspect() string
  • func (h *Hash) Iter() bool
  • func (h *Hash) Type() Type
• type HashKey
• type HashPair
• type Hashable
• type Iterable
• type Null
  • func (n *Null) Inspect() string
  • func (n *Null) Type() Type
• type Object
• type ReturnValue
  • func (rv *ReturnValue) Inspect() string
  • func (rv *ReturnValue) Type() Type
• type Script
  • func NewScript() *Script
  • func (s *Script) Eval(node ast.Node, env *Environment) Object
  • func (s *Script) Free()
• type String
  • func (s *String) HashKey() HashKey
  • func (s *String) Inspect() string
  • func (s *String) Iter() bool
  • func (s *String) Type() Type
• type Type

Constants

const (
	FLOAT    = "FLOAT"
	BOOLEAN  = "BOOLEAN"
	NULL     = "NULL"
	RETURN   = "RETURN"
	ERROR    = "ERROR"
	FUNCTION = "FUNCTION"
	STRING   = "STRING"
	BUILTIN  = "BUILTIN"
	ARRAY    = "ARRAY"
	HASH     = "HASH"

	VOID     = "VOID"
	BREAK    = "BREAK"
	CONTINUE = "CONTINUE"
)

Types

type Array

type Array struct {
	Elements []Object
}

func (*Array) Inspect

func (a *Array) Inspect() string

func (*Array) Iter

func (a *Array) Iter() bool

func (*Array) Type

func (a *Array) Type() Type

type Boolean

type Boolean struct {
	Value bool
}

func (*Boolean) HashKey

func (b *Boolean) HashKey() HashKey

func (*Boolean) Inspect

func (b *Boolean) Inspect() string

func (*Boolean) Type

func (b *Boolean) Type() Type

type Break

type Break struct{}

func (*Break) Inspect

func (b *Break) Inspect() string

func (*Break) Type

func (b *Break) Type() Type

type Builtin

type Builtin struct {
	Fn BuiltinFunction
}

func (*Builtin) Inspect

func (b *Builtin) Inspect() string

func (*Builtin) Type

func (b *Builtin) Type() Type

type BuiltinFunction

type BuiltinFunction func(args ...Object) Object

type Continue

type Continue struct{}

func (*Continue) Inspect

func (c *Continue) Inspect() string

func (*Continue) Type

func (c *Continue) Type() Type

type Environment

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

func NewEnclosedEnvironment

func NewEnclosedEnvironment(outer *Environment) *Environment

func NewEnvironment

func NewEnvironment() *Environment

func (*Environment) Get

func (e *Environment) Get(name string) (Object, bool)

func (*Environment) Set

func (e *Environment) Set(name string, val Object) Object

type Error

type Error struct {
	Message string
}

func NewError

func NewError(format string, a ...interface{}) *Error

func (*Error) Inspect

func (e *Error) Inspect() string

func (*Error) Type

func (e *Error) Type() Type

type Float

type Float struct {
	Value float64
}

func (*Float) HashKey

func (i *Float) HashKey() HashKey

func (*Float) Inspect

func (i *Float) Inspect() string

func (*Float) Type

func (i *Float) Type() Type

type Function

type Function struct {
	Parameters []*ast.Identifier
	Body       *ast.BlockStatement
	Env        *Environment
}

func (*Function) Inspect

func (f *Function) Inspect() string

func (*Function) Type

func (f *Function) Type() Type

type Hash

type Hash struct {
	Pairs map[HashKey]HashPair
}

func (*Hash) Inspect

func (h *Hash) Inspect() string

func (*Hash) Iter

func (h *Hash) Iter() bool

func (*Hash) Type

func (h *Hash) Type() Type

type HashKey

type HashKey struct {
	Type  Type
	Value uint64
}

type HashPair

type HashPair struct {
	Key   Object
	Value Object
}

type Hashable

type Hashable interface {
	HashKey() HashKey
}

type Iterable

type Iterable interface {
	Iter() bool
}

type Null

type Null struct{}

func (*Null) Inspect

func (n *Null) Inspect() string

func (*Null) Type

func (n *Null) Type() Type

type Object

type Object interface {
	Type() Type
	Inspect() string
}

type ReturnValue

type ReturnValue struct {
	Value Object
}

func (*ReturnValue) Inspect

func (rv *ReturnValue) Inspect() string

func (*ReturnValue) Type

func (rv *ReturnValue) Type() Type

type Script

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

func NewScript

func NewScript() *Script

func (*Script) Eval

func (s *Script) Eval(node ast.Node, env *Environment) Object

func (*Script) Free

func (s *Script) Free()

type String

type String struct {
	Value string
}

func (*String) HashKey

func (s *String) HashKey() HashKey

func (*String) Inspect

func (s *String) Inspect() string

func (*String) Iter

func (s *String) Iter() bool

func (*String) Type

func (s *String) Type() Type

type Type

type Type string