def __init__(self):

self.id = None

self.expr = None

#Simple parsing for Assign

def parse(self):

self.id = Id()

self.id.parse(TokList.getIdOrConst())

TokList.nextToken()

TokList.match('ASSIGN','assign')

self.expr = Expr()

self.expr.parse()

TokList.match('SEMICOLON','assign')

#Simple printing for Assign

def print(self):

TokList.printIndent()

self.id.print()

print(':=',end='')

self.expr.print()

print(';')

#Executor that determines value of an expression and then sets that value to the respective Id

def exec(self):

val = self.expr.exec()