def return_statement(self):
self.expect(T.RETURN)
if self.peek().type == T.SEMICOLON:
expr = None
expr = self.expr()
self.expect(T.SEMICOLON)
return ast.ReturnStmt(expr)
def __exit(self):
return_stmt_node = ast.ReturnStmt()
return_stmt_node.return_token = self.current_token
self.__advance()
possible_tokens = [
token.STRINGVAL, token.INTVAL, token.BOOLVAL, token.FLOATVAL,
token.NIL, token.NEW, token.ID, token.LPAREN
]
curr_token = self.current_token.tokentype
if curr_token in possible_tokens:
return_stmt_node.return_expr = self.__expr()
# return; ???
self.__eat(token.SEMICOLON)
return return_stmt_node
def p_returnstmt(p):
'''returnstmt : TKRETURN arith_expr ';' '''
p[0] = ast.ReturnStmt(p[2]).addloc(p.lineno(1))
def p_stmt_return(p):
'stmt : RETURN expr_opt SEMICOLON'
p[0] = ast.ReturnStmt(p[2], p.lineno(1))