Not getting correct results form this code load "TinyToken.rb$"$

load "TinyLexer.rb$"$

class Parser $$ Lexer

def initialize$($filename$)$

super$($filename$)$

consume$()$

@parse$\_$errors $=0$

end

def consume$()$

@lookahead $=$ nextToken$()$

while$($@lookahead && @lookahead.type $==$ Token::WS$)$

@lookahead $=$ nextToken$()$

end

rescue @lookahead $=$ Token.new$($Token::EOF,"EOF"$)$

end

def match$($dtype$)$

if $($@lookahead.type $!=$ dtype$)$

puts "Expected #$\{$dtype$\}$ found #$\{$@lookahead.text$\}"$

@parse$\_$errors $+=1$

end

consume$()$

end

def program$()$

while$($@lookahead.type $!=$ Token::EOF$)$

puts "Entering STMT Rule"

statement$()$

end

puts "There were #$\{$@parse$\_$errors$\}$ parse errors found."

end

def factor$()$

puts "Entering FACTOR Rule"

if @lookahead.nil?

puts "Unexpected end of input"

return

end

if $[$@lookahead.type, @lookahead.text$]==[$Token::LPAREN, $"("]$

match$($Token::LPAREN$)$

puts "Entering EXP Rule"

exp$()$

match$($Token::RPAREN$)$

elsif @lookahead.type $==$ Token::ID$||$@lookahead.type $==$ Token::INT

puts "Found #$\{$@lookahead.type$\}$ Token: #$\{$@lookahead.text$\}"$

match$($@lookahead.type$)$

else

expected$\_$tokens $="$ID or INT or $("$

puts "Expected #$\{$expected$\_$tokens$\}$ found #$\{$@lookahead.text$\}"$

consume$()$

end

puts "Exiting Factor RUle"

end

def term$()$

puts "Entering TERM Rule"

factor$()$

while $([$@lookahead.type, @lookahead.text$]==[$Token::MULTOP, $"*"])||([$@lookahead.type, @lookahead.text$]==[$Token::DIVOP, $"/"])$

puts "Found #$\{$@lookahead.type$\}$ Token: #$\{$@lookahead.text$\}"$

match$($@lookahead.type$)$

puts "Entering FACTOR Rule"

factor$()$

end

puts "Exiting TERM Rule"

end

def exp$()$

puts "Entering EXP Rule"

term$()$

while @lookahead && $([$Token::ADDOP,Token::SUBOP$].$include?$($@lookahead.type$))$

puts "Found#$\{$@lookahead.type$\}$ Token: #$\{$@lookahead.text$\}"$

match$($@lookahead.type$)$

puts "Entering TERM Rule"

term$()$

end

puts "Exiting EXP Rule"

end

def assign$()$

puts "Entering ASSGN Rule"

if @lookahead.type $==$ Token::ID

puts "Found ID Token: #$\{$@lookahead.text$\}"$

match$($Token::ID$)$

match$($Token::ASSGN$)$

puts "Entering EXP Rule"

exp$()$

else

puts "Expected ID found #$\{$@lookahead.text$\}"$

consume$()$

end

puts "Exiting ASSGN Rule"

end

def statement$()$

if @lookahead.nil?

puts "Unexpected end of input"

return

end

if $($@lookahead.type $==$ Token::ID$)$

puts "Entering ASSGN Rule"

assign$()$

elsif @lookahead.type $==$ Token::PRINT

puts "Found PRINT Token: #$\{$@lookahead.text$\}"$

match$($Token::PRINT$)$

puts "Entering EXP Rule"

exp$()$

else

puts "Expected ID or PRINT found #$\{$@lookahead.text$\}"$

consume$()$

end

puts "Exiting STMT Rule"

end

end

if $\_\_$FILE$\_\_==$ $PROGRAM$\_$NAME

filename $=$ ARGV$[0]$

parser $=$ Parser.new$($filename$)$

parser.program$()$

end This is the correct result