Hello

/* task1.jj */


PARSER_BEGIN(Lexer)

import java.util.ArrayList;

 public class Lexer {



    public static void main(String[] args){



       try {
             new Lexer(new java.io.StringReader(args[0])).Start();
        } catch (Throwable e) {

            System.out.println("Syntax check failed: " + e.getMessage());
        }








    }
}

PARSER_END(Lexer)

SKIP : {" " | "\t" | "\n" | "\r"}
TOKEN : {< Def: "def" >}
TOKEN : {< If: "if" >}
TOKEN : {< Then: "then" >}
TOKEN : {< Else: "else" >}
TOKEN : {< Skip: "skip" >}
TOKEN : {< While: "while" >}
TOKEN : {< Do: "do" >}
TOKEN : {< Repeat: "repeat" >}
TOKEN : {< Until: "until" >}
TOKEN : {< Break: "break" >}
TOKEN : {< Continue: "continue" >}
TOKEN : {< Integer: (["0"-"9"])+>}
TOKEN : {< Identifier: (["a"-"z"](["a"-"z"] | ["A"-"Z"] |"_" | ["0"-"9"])*)>}
TOKEN : {< Semicolon: ";">}
TOKEN : {< LeftParen: "(">}
TOKEN : {< RightParen: ")">}
TOKEN : {< Equals: "=">}
TOKEN : {< Equality: "==">}
TOKEN : {< LessThan: "<">}
TOKEN : {< GreaterThan: ">">}
TOKEN : {< LessThanOrEq: "<=">}
TOKEN : {< GreatThanOrEq: ">=">}
TOKEN : {< Comma: ",">}
TOKEN : {< LeftCurlyBracket: "{">}
TOKEN : {< RightCurlyBracket: "}">}
TOKEN : {< EqualsAssign: ":=">}
TOKEN : {< Plus: "+">}
TOKEN : {< Multiply: "*">}
TOKEN : {< Minus: "-">}
TOKEN : {< Divide: "/">}

void Start(): {Token t = null;
ArrayList<Token> tokenList = new ArrayList<Token>();

  }
{


(keyword()|
 t = <Identifier> {System.out.println("T_Identifier ( " + t.image.toString() + ")");tokenList.add(t);}|
Integer()|
SpecialNotation())*
<EOF>
{}

void SpecialNotation() :

{

	String total = "";

	String temp;

}

{

	(t = <Semicolon> {System.out.println("T_Semicolon");tokenList.add(t);}|
 t = <LeftParen> {System.out.println("T_LeftParenthesis");tokenList.add(t);}|
 t = <RightParen> {System.out.println("T_RighParenthesis");tokenList.add(t);}|
t = <Equals> {System.out.println("T_Equals");tokenList.add(t);}|
 t = <Equality> {System.out.println("T_Equality");tokenList.add(t);}|
 t = <LessThan> {System.out.println("T_LessThan");tokenList.add(t);}|
  t = <GreaterThan> {System.out.println("GreaterThan");tokenList.add(t);}|
 t = <LessThanOrEq> {System.out.println("T_LessThanOrEq");tokenList.add(t);}|
 t = <GreatThanOrEq> {System.out.println("T_GreaterThanOrEq");tokenList.add(t);}|
t = <Comma> {System.out.println("T_Comma");tokenList.add(t);}|
 t = <LeftCurlyBracket> {System.out.println("T_LeftCurlyBracket");tokenList.add(t);}|
t = <RightCurlyBracket> {System.out.println("T_RightCurlyBracket");tokenList.add(t);}|
t = <EqualsAssign> {System.out.println("T_EqualsAssign");tokenList.add(t);}|
  t = <Plus> {System.out.println("T_Plus");tokenList.add(t);}|
t = <Multiply> {System.out.println("T_Multiply");tokenList.add(t);}|
t = <Minus> {System.out.println("T_Minus");tokenList.add(t);}|
 t = <Divide> {System.out.println("T_Divide");tokenList.add(t);}
  )*



}

void KeyWords() :

{

}
{
 (t = <Def> {System.out.println("T_Def"); tokenList.add(t);}|
 t = <If> {System.out.println("T_If");tokenList.add(t);}|
 t = <Then> {System.out.println("T_Then");tokenList.add(t);}|
 t = <Else> {System.out.println("T_Else");tokenList.add(t);}|
t = <Skip> {System.out.println("T_Skip");tokenList.add(t);}|
 t = <While> {System.out.println("T_While");tokenList.add(t);}|
 t = <Do> {System.out.println("T_Do");tokenList.add(t);}|
t = <Repeat> {System.out.println("T_Repeat");tokenList.add(t);} |
 t = <Until> {System.out.println("T_Until");tokenList.add(t);} |
t = <Break> {System.out.println("T_Break");tokenList.add(t);}|
 t = <Continue> {System.out.println("T_Continue");tokenList.add(t);})*
}

void Integer() :

{

}
{
	(
		(
		t =  <Integer> {System.out.println("T_Integer");tokenList.add(t);}
		)
		(
			SKIP
			(
			t = <Identifier> {System.out.println("T_Identifier ( " + t.image.toString() + ")");tokenList.add(t);}
			)
		)*
	)

}