package ast

import (
	"bytes"

	"code.jmug.me/jmug/interpreter-in-go/pkg/token"
)

type IfExpression struct {
	Token       token.Token // The `if` token.
	Condition   Expression
	Consequence *BlockStatement
	Alternative *BlockStatement
}

func (ie *IfExpression) expressionNode() {}
func (ie *IfExpression) TokenLiteral() string {
	return ie.Token.Literal
}
func (ie *IfExpression) String() string {
	var out bytes.Buffer
	out.WriteString("if")
	out.WriteString(ie.Condition.String())
	out.WriteString(" ")
	out.WriteString(ie.Consequence.String())
	if ie.Alternative != nil {
		out.WriteString("else ")
		out.WriteString(ie.Alternative.String())
	}
	return out.String()
}