Given the grammar defined by the following set of production rules which represent a subset of MODULA-2 programming language :

module-decl ( module-heading declarations procedure-decl block name .

module-heading ( module name ;

block ( begin stmt-list end

declarations ( const-decl var-decl

const-decl ( const const-list | (

const-list ( ( name = value ; )*

var-decl ( var var-list | (

var-list ( ( var-item ; )*

var-item ( name-list : data-type

name-list ( name ( , name )*

data-type ( integer | real | char

procedure-decl ( procedure-heading declarations block name ;

procedure-heading ( procedure name ;

stmt-list ( statement ( ; statement )*

statement ( ass-stmt | read-stmt | write-stmt | if-stmt

| while-stmt | repeat-stmt | exit-stmt | call-stmt | (

ass-stmt ( name := exp

exp ( term ( add-oper term )*

term ( factor ( mul-oper factor )*

factor ( ( exp ) | name | value

add-oper ( + | -

mul-oper ( * | / | mod | div

read-stmt (readint ( name-list ) | readreal ( name-list )

| readchar ( name-list ) | readln

write-stmt (writeint ( write-list ) | writereal ( write-list )

writechar ( write-list ) | writeln

write-list ( write-item ( , write-item )*

write-item ( name | value

if-stmt ( if condition then stmt-list elseif-part else-part end

elseif-part ( ( elseif condition then stmt-list )*

else-part ( else stmt-list | (

while-stmt ( while condition do stmt-list end

repeat-stmt ( loop stmt-list until condition

exit-stmt ( exit

call-stmt ( call name (* This is a procedure name *)

condition ( name-value relational-oper name-value

name-value ( name | value

relational-oper ( = | |= | | >=

name ( letter ( letter | digit )*

value ( integer-value | real-value

integer-value ( digit ( digit )*

real-value ( digit ( digit )*. digit ( digit )*

Note: The tokens in bold are reserved words or standard identifiers (library functions or procedures).

Write an a recursive descent parser for the above grammar.

* Use only Java as a host language.

* You should work individually only, any signs of cheating will be penalized severely.

* Your program will be tested with my text files (programs), either it works correctly or doesnt.

* No programs will be accepted after the deadline for any reason whatsoever.

* In the ERROR function, report the error clearly and precisely showing the line and token

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