def getRelationalOperator(self):
op = RelationalOperator
tok = self.getNextToken()
if (tok.getTokType() is TokenType.EQ_TOK):
op = RelationalOperator.EQ_OP
elif (tok.getTokType() is TokenType.NE_TOK):
op = RelationalOperator.NE_OP
elif (tok.getTokType() is TokenType.GT_TOK):
op = RelationalOperator.GT_OP
elif (tok.getTokType() is TokenType.GE_TOK):
op = RelationalOperator.GE_OP
elif (tok.getTokType() is TokenType.LT_TOK):
op = RelationalOperator.LT_OP
elif (tok.getTokType() is TokenType.LE_TOK):
op = RelationalOperator.LE_OP
else:
raise ParserException("relational operator expected at row " + Token.getRowNumber() +
"and column " + Token.getColumnNumber())
return op
def getStatement(self):
tok = self.getLookaheadToken()
if(tok.getTokType() == TokenType.ID_TOK):
s = self.getAssignmentStatement()
elif (tok.getTokType() == TokenType.IF_TOK):
s = self.getIfStatement()
elif (tok.getTokType() == TokenType.PRINT_TOK):
s = self.getPrintStatement()
elif (tok.getTokType() == TokenType.FROM_TOK):
s = self.getLoopStatement()
else:
#raise ParserException(tok.getTokType)
raise ParserException(str(tok.getTokType()) + " statement is expected at row " + str(Token.getRowNumber()) + "and column " + str(Token.getColumnNumber()))
return s
