コード例 #1
0
def transform_super_expr(builder: IRBuilder, o: SuperExpr) -> Value:
    # warning(builder, 'can not optimize super() expression', o.line)
    sup_val = builder.load_module_attr_by_fullname('builtins.super', o.line)
    if o.call.args:
        args = [builder.accept(arg) for arg in o.call.args]
    else:
        assert o.info is not None
        typ = builder.load_native_type_object(o.info.fullname)
        ir = builder.mapper.type_to_ir[o.info]
        iter_env = iter(builder.environment.indexes)
        vself = next(iter_env)  # grab first argument
        if builder.fn_info.is_generator:
            # grab sixth argument (see comment in translate_super_method_call)
            self_targ = list(builder.environment.symtable.values())[6]
            vself = builder.read(self_targ, builder.fn_info.fitem.line)
        elif not ir.is_ext_class:
            vself = next(
                iter_env)  # second argument is self if non_extension class
        args = [typ, vself]
    res = builder.py_call(sup_val, args, o.line)
    return builder.py_get_attr(res, o.name, o.line)
コード例 #2
0
def transform_assert_stmt(builder: IRBuilder, a: AssertStmt) -> None:
    if builder.options.strip_asserts:
        return
    cond = builder.accept(a.expr)
    ok_block, error_block = BasicBlock(), BasicBlock()
    builder.add_bool_branch(cond, ok_block, error_block)
    builder.activate_block(error_block)
    if a.msg is None:
        # Special case (for simpler generated code)
        builder.add(RaiseStandardError(RaiseStandardError.ASSERTION_ERROR, None, a.line))
    elif isinstance(a.msg, StrExpr):
        # Another special case
        builder.add(RaiseStandardError(RaiseStandardError.ASSERTION_ERROR, a.msg.value,
                                       a.line))
    else:
        # The general case -- explicitly construct an exception instance
        message = builder.accept(a.msg)
        exc_type = builder.load_module_attr_by_fullname('builtins.AssertionError', a.line)
        exc = builder.py_call(exc_type, [message], a.line)
        builder.primitive_op(raise_exception_op, [exc], a.line)
    builder.add(Unreachable())
    builder.activate_block(ok_block)