object

Documentation

Index

• Constants
• Variables
• type Array
  • func (ao *Array) Inspect() string
  • func (ao *Array) Type() ObjectType
• type Boolean
  • func (b *Boolean) HashKey() HashKey
  • func (i *Boolean) Inspect() string
  • func (i *Boolean) Type() ObjectType
• type Builtin
  • func (b *Builtin) Inspect() string
  • func (b *Builtin) Type() ObjectType
• type BuiltinFunction
• type Char
  • func (s *Char) Inspect() string
  • func (s *Char) Type() ObjectType
• 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
  • func (e *Environment) Update(name string, val Object) (Object, bool)
• type Error
  • func NewError(line, col int, format string, a ...any) *Error
  • func (e *Error) Inspect() string
  • func (e *Error) Type() ObjectType
• type Float
  • func (s *Float) Inspect() string
  • func (s *Float) Type() ObjectType
• type Function
  • func (f *Function) Inspect() string
  • func (f *Function) Type() ObjectType
• type Hash
  • func (h *Hash) Inspect() string
  • func (h *Hash) Type() ObjectType
• type HashKey
• type HashPair
• type Hashable
• type Integer
  • func (i *Integer) HashKey() HashKey
  • func (i *Integer) Inspect() string
  • func (i *Integer) Type() ObjectType
• type Null
  • func (i *Null) Inspect() string
  • func (i *Null) Type() ObjectType
• type Object
• type ObjectType
• type ReturnValue
  • func (rv *ReturnValue) Inspect() string
  • func (rv *ReturnValue) Type() ObjectType
• type String
  • func (s *String) HashKey() HashKey
  • func (s *String) Inspect() string
  • func (s *String) Type() ObjectType

Constants

const (
	INTEGER_OBJ      = "INTEGER"
	BOOLEAN_OBJ      = "BOOLEAN"
	NULL_OBJ         = "NULL"
	RETURN_VALUE_OBJ = "RETURN_VALUE"
	ERROR_OBJ        = "ERROR"
	FUNCTION_OBJ     = "FUNCTION"
	STRING_OBJ       = "STRING"
	CHAR_OBJ         = "CHAR"
	FLOAT_OBJ        = "FLOAT"
	BUILTIN_OBJ      = "BUILTIN"
	ARRAY_OBJ        = "ARRAY"
	HASH_OBJ         = "HASH"
)

constant for each object type

Variables

var (
	NULL  = &Null{}
	TRUE  = &Boolean{Value: true}
	FALSE = &Boolean{Value: false}
)

this allows us only to have on Bolean object and Null object

Types

type Array

type Array struct {
	Elements []Object
}

array obj

func (*Array) Inspect

func (ao *Array) Inspect() string

func (*Array) Type

func (ao *Array) Type() ObjectType

type Boolean

type Boolean struct {
	Value bool
}

bool obj

func (*Boolean) HashKey

func (b *Boolean) HashKey() HashKey

hash method for string int and bool

func (*Boolean) Inspect

func (i *Boolean) Inspect() string

func (*Boolean) Type

func (i *Boolean) Type() ObjectType

type Builtin

type Builtin struct {
	Fn BuiltinFunction
}

builtin obj

func (*Builtin) Inspect

func (b *Builtin) Inspect() string

func (*Builtin) Type

func (b *Builtin) Type() ObjectType

type BuiltinFunction

type BuiltinFunction func(node *ast.CallExpression, args ...Object) Object

type Char

type Char struct {
	Value rune
}

char obj

func (*Char) Inspect

func (s *Char) Inspect() string

func (*Char) Type

func (s *Char) Type() ObjectType

type Environment

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

func NewEnclosedEnvironment

func NewEnclosedEnvironment(outer *Environment) *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

func (*Environment) Update

func (e *Environment) Update(name string, val Object) (Object, bool)

type Error

type Error struct {
	Message string
	Line    int
	Column  int
}

error object

func NewError

func NewError(line, col int, format string, a ...any) *Error

func (*Error) Inspect

func (e *Error) Inspect() string

func (*Error) Type

func (e *Error) Type() ObjectType

type Float

type Float struct {
	Value float64
}

float obj

func (*Float) Inspect

func (s *Float) Inspect() string

func (*Float) Type

func (s *Float) Type() ObjectType

type Function

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

function object

func (*Function) Inspect

func (f *Function) Inspect() string

func (*Function) Type

func (f *Function) Type() ObjectType

type Hash

type Hash struct {
	Pairs map[HashKey]HashPair
}

func (*Hash) Inspect

func (h *Hash) Inspect() string

func (*Hash) Type

func (h *Hash) Type() ObjectType

type HashKey

type HashKey struct {
	Type  ObjectType
	Value uint64
}

hashkey object

type HashPair

type HashPair struct {
	Key   Object
	Value Object
}

Hash obj

type Hashable

type Hashable interface {
	HashKey() HashKey
}

type Integer

type Integer struct {
	Value int64
}

integer obj

func (*Integer) HashKey

func (i *Integer) HashKey() HashKey

func (*Integer) Inspect

func (i *Integer) Inspect() string

func (*Integer) Type

func (i *Integer) Type() ObjectType

type Null

type Null struct{}

null obj

func (*Null) Inspect

func (i *Null) Inspect() string

func (*Null) Type

func (i *Null) Type() ObjectType

type Object

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

type ObjectType

type ObjectType string

type ReturnValue

type ReturnValue struct {
	Value Object
}

return value obj

func (*ReturnValue) Inspect

func (rv *ReturnValue) Inspect() string

func (*ReturnValue) Type

func (rv *ReturnValue) Type() ObjectType

type String

type String struct {
	Value string
}

sttring obj

func (*String) HashKey

func (s *String) HashKey() HashKey

func (*String) Inspect

func (s *String) Inspect() string

func (*String) Type

func (s *String) Type() ObjectType