Pikachu compiler from src: http://trove42.com/pikachu-programming-language/

pikachu.js

function compiler(code)
{	
	PiPikachu=[],PikaPikachu=[];
	try{
	var ip=document.getElementById('ip').value.replace( /\s\s+/g, ' ' ).trim().split(' ');
	for(i=0;i<ip.length;i++)
		PiPikachu.push(ip[i]);
	}
	catch(e)
	{document.getElementById('op').value="Invalid input!";}
	
	lines=code.split(/\r?\n/g);
	op="";
	for(i=0;i<lines.length;i++)
	{
		var pikachu=[],f=0;
		var currentLine=lines[i].replace( /\s\s+/g, ' ' ).trim();
		if(currentLine.split(' ').length==2)
		{
			switch(currentLine)
			{
				case "pi pika":
					PikaPikachu.push(PiPikachu[PiPikachu.length-1]);
					f=1;break;
				case "pika pi":
					PiPikachu.push(PikaPikachu[PikaPikachu.length-1]);
					f=1;break;
				case "pi pikachu":
					PiPikachu.pop();
					f=1;break;
				case "pika pikachu":
					PikaPikachu.pop();
					f=1;break;
				case "pikachu pikachu":
					if(PiPikachu[PiPikachu.length-1]==PikaPikachu[PikaPikachu.length-1])
					{
						
						n=pikachucount(lines[i+1]).toString();
						if(n.endsWith("found "))
						{
							document.getElementById('op').value=n + "on line "+(i+1);
						}
						else
						{
							i=parseInt(n)-2;
						}
					}
					else i++;
					f=1;
					break;
				case "pika pika":
					if(PiPikachu[PiPikachu.length-1]!=PikaPikachu[PikaPikachu.length-1])
					{
						n=pikachucount(lines[i+1]).toString();
						if(n.endsWith("found "))
						{
							document.getElementById('op').value=n + "on line "+(i+2);
						}
						else
						{
							i=parseInt(n)-2;				
						}
					}
					else i++;
					f=1;
					break;
				default:
					document.getElementById('op').value="Invalid syntax on line "+(i+1);alert(currentLine);alert(PiPikachu+"\n"+PikaPikachu);
					return;
			}
		}
		
		if(f==1) continue;
		if(currentLine.endsWith("pi pikachu"))
		{
			pikachu=PiPikachu;
			currentLine=currentLine.substr(0,currentLine.length-10).trim();
		}
		else if(currentLine.endsWith("pika pikachu"))
		{
			pikachu=PikaPikachu;
			currentLine=currentLine.substr(0,currentLine.length-12).trim();
		}
		else
		{
			document.getElementById('op').value="Invalid syntax on line "+(i+1);alert(currentLine);
			return;
		}
		
		if(currentLine=="pi pika")
		{
			pikachu.push(pikachu[pikachu.length-2]+pikachu[pikachu.length-1]);
		}
		else if(currentLine=="pika pi")
		{
			pikachu.push(pikachu[pikachu.length-2]-pikachu[pikachu.length-1]);
		}
		else if(currentLine=="pi pikachu")
		{
			pikachu.push(pikachu[pikachu.length-2]*pikachu[pikachu.length-1]);
		}
		else if(currentLine=="pikachu")
		{
			pikachu.push(pikachu[pikachu.length-2]/pikachu[pikachu.length-1]);
		}
		else if(currentLine=="pika pikachu")
		{
			op=op.concat(pikachu.pop());
		}
		else if(currentLine=="pikachu pikachu")
		{
			op=op.concat(String.fromCharCode(pikachu.pop()));
		}
		else if(currentLine=="")
		{
			pikachu.pop();
		}
		else
		{
			n=pikachucount(currentLine).toString();
			if(n.endsWith("found "))
			{
				document.getElementById('op').value=n + "on line "+(i+1);
				return;
			}
			else
			{
				pikachu.push(parseInt(n));			
			}
		}	
	}
	document.getElementById('op').value=op;
}

function pikachucount(pi)
{
	prv="",nprv=0,pikachu=0;
	pi=pi.trim().split(' ');
	for(a=0;a<pi.length;a++)
		if(pi[a]=="pi" || pi[a]=="pika" || pi[a]=="pikachu")
		{
			if(nprv==1 && prv==pi[a])
				return pi[a]+" "+pi[a]+" "+pi[a]+" found ";
			else if(prv==pi[a])
				nprv++;
			else
				nprv=0;
			pikachu++;
			prv=pi[a];
		}
		else return "Non-pikachu language found "; 
		
	return pikachu;
}

Is there a simple way to include this compiler to an editor like Atom?