basic.py 文件源码

def __init__(self, exprs):
        """
        Initialize a Scope, which represents a group of :class:`Access` objects
        extracted from some expressions ``exprs``. The expressions are to be
        provided as they appear in program order.
        """
        exprs = as_tuple(exprs)
        assert all(isinstance(i, Eq) for i in exprs)

        self.reads = {}
        self.writes = {}
        for i, e in enumerate(exprs):
            # reads
            for j in retrieve_indexed(e.rhs):
                v = self.reads.setdefault(j.base.function, [])
                mode = 'R' if not q_inc(e) else 'RI'
                v.append(TimedAccess(j, mode, i))
            # write
            if e.lhs.is_Indexed:
                v = self.writes.setdefault(e.lhs.base.function, [])
                mode = 'W' if not q_inc(e) else 'WI'
                v.append(TimedAccess(e.lhs, mode, i))