eval

Documentation

Index

• Variables
• func BeginEval(program ast.Node, env *object.Environment, lexer *lexer.Lexer) object.Object
• func Eval(node ast.Node, env *object.Environment) object.Object
• func EvalModule(tok token.Token, name string) object.Object

Variables

var (
	// TRUE is a cached Boolean object holding the `true` value
	TRUE = &object.Boolean{Value: true}

	// FALSE is a cached Boolean object holding the `false` value
	FALSE = &object.Boolean{Value: false}

	// NULL is a cached Null object
	NULL = &object.Null{}
)

Functions

func BeginEval

func BeginEval(program ast.Node, env *object.Environment, lexer *lexer.Lexer) object.Object

BeginEval (program, env, lexer) object.Object REPL and testing modules call this function to init the global lexer pointer for error location NB. Eval(node, env) is recursive

func Eval

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

Eval evaluates the node and returns an object

func EvalModule

func EvalModule(tok token.Token, name string) object.Object

EvalModule evaluates the named module and returns a *object.Module object