convert.py 文件源码

def build_comparison(tok):
    assert type(tok) is S.Comparison

    m = M.Comparison()
    for tok in remove_whitespace(tok.tokens):
        LOG.debug("  %s %s", tok, type(tok))
        m = sql_literal_to_model(tok, m)
        if not m:
            raise Exception("[BUG] Failed to convert %s to model" % tok)

    return m