AddChildRule.ts

///<reference path="Command.ts"/>
///<reference path="Environment.ts"/>
///<reference path="CommandBuilder.ts"/>
///<reference path="Rule.ts"/>
/**
 * Created by Evan on 10/17/2016.
 */

class AddChildRule implements Rule{

    checkToken(token: string): boolean {
        console.log("Inside add child");
        var tokens = token.split(" ");
        if(!(tokens[0].split(".").length == 2)) {
            console.log(tokens[0].split(".").length);
            console.log(tokens[0].split(".")[0]);
            console.log("1");
            return false
        }
        var firstDot = tokens[0].indexOf(".");
        var firstPar = tokens[0].indexOf("(");
        var arg = tokens[0].substring(firstDot + 1, firstPar + 1);
        if(!(arg == "addChild(")){
            console.log("2 " + arg);
            return false;
        }
        return true;
    }

    getCommand(token: string): Command {
        var run = function(environment: Environment){
            var tokens = token.split(" ");
            var varHeader = tokens[0];
            var firstDot = tokens[0].indexOf(".");
            var firstPar = tokens[0].indexOf("(");
            var lastPar = tokens[0].lastIndexOf(")");

            var arg = tokens[0].substring(firstPar + 1, lastPar);

            var varName = tokens[0].substring(0, firstDot);
            if(!(environment.hasVariable(varName))){
                throw new Error("No such variable \"" + varName + "\" : " + token);
            }
            if(!(environment.hasVariable(arg))){
                throw new Error("No such variable \"" + arg + "\" : " + token);
            }

            environment.getVariable(varName).content.addChild(environment.getVariable(arg).content);
        };

        return CommandBuilder.build(run);
    }



}