package ast

import (
	"strings"

	"github.com/d5/tengo/compiler/source"
)

// ArrayLit represents an array literal.
type ArrayLit struct {
	Elements []Expr
	LBrack   source.Pos
	RBrack   source.Pos
}

func (e *ArrayLit) exprNode() {}

// Pos returns the position of first character belonging to the node.
func (e *ArrayLit) Pos() source.Pos {
	return e.LBrack
}

// End returns the position of first character immediately after the node.
func (e *ArrayLit) End() source.Pos {
	return e.RBrack + 1
}

func (e *ArrayLit) String() string {
	var elements []string
	for _, m := range e.Elements {
		elements = append(elements, m.String())
	}

	return "[" + strings.Join(elements, ", ") + "]"
}