ansisql.py 文件源码

def __init__(self, engine, statement, parameters=None, typemap=None, **kwargs):
        """constructs a new ANSICompiler object.

        engine - SQLEngine to compile against

        statement - ClauseElement to be compiled

        parameters - optional dictionary indicating a set of bind parameters
        specified with this Compiled object.  These parameters are the "default"
        key/value pairs when the Compiled is executed, and also may affect the 
        actual compilation, as in the case of an INSERT where the actual columns
        inserted will correspond to the keys present in the parameters."""
        sql.Compiled.__init__(self, engine, statement, parameters)
        self.binds = {}
        self.froms = {}
        self.wheres = {}
        self.strings = {}
        self.select_stack = []
        self.typemap = typemap or {}
        self.isinsert = False