SimpleJavaParser.jj

PARSER_BEGIN(SimpleJavaParser)

public class SimpleJavaParser
{
	//global variables
	private static int total = 0;
	private static int count = 0;
	private static int max = 0;

    public static void main(String args[]) throws ParseException
    {
        new SimpleJavaParser(System.in).input();
        System.out.println("The input is valid Duuuuuuuuuuuuuude.");
		
		System.out.println("Average is :"+total/count);
		System.out.println("Maximum is :"+max);
    }
}

PARSER_END(SimpleJavaParser)

SKIP : { " " | "\n" | "\r" | "\t" }

TOKEN :
{
    < PUBLIC: "public" > |
    < CLASS: "class" > |
	< ABS: "abstract" > |	
	< METHODTYPE: "void" | "int" | "double"> |	
    < LBRACE: "{" > |
    < RBRACE: "}" > |
	< OPEN: "("> |
	< CLOSE: ")"> |
	< COMMA: "," > |
    < IDENTIFIER: ["a"-"z","A"-"Z"](["a"-"z","A"-"Z","0"-"9"])* >
}

void input() :
{
	Token m;
}
{
    <PUBLIC> (<ABS>)? <CLASS>  (m=<IDENTIFIER>){count++;}
	{		
		total=m.image.length();
		
		if(max<total){
			max=total;
		}
	}
	
	
    <LBRACE> 	
		
		(method())*
	
	<RBRACE>
	{
		System.out.println(m);
	}
}
void method():
{
	Token t;
}
{
	<PUBLIC> <METHODTYPE> (t=<IDENTIFIER>)
	{count++;}
	{
		total+=t.image.length();

		if(max<total){
			max=total;
		}
	}
	<OPEN><CLOSE>
	<LBRACE> 
		
	<RBRACE> {System.out.println(t);}
}