fypp.py 文件源码

def _get_call_arguments(self, fname, spans, argexpr, contents, argnames):
        if argexpr is None:
            posargs = []
            kwargs = {}
        else:
            # Parse and evaluate arguments passed in call header
            self._evaluator.openscope()
            try:
                posargs, kwargs = self._evaluate(
                    '__getargvalues(' + argexpr + ')', fname, spans[0][0])
            except Exception as exc:
                msg = "unable to parse argument expression '{0}'"\
                    .format(argexpr)
                raise FyppFatalError(msg, fname, spans[0], exc)
            self._evaluator.closescope()

        # Render arguments passed in call body
        args = []
        for content in contents:
            self._evaluator.openscope()
            rendered = self.render(content, divert=True)
            self._evaluator.closescope()
            if rendered.endswith('\n'):
                rendered = rendered[:-1]
            args.append(rendered)

        # Separate arguments in call body into positional and keyword ones:
        if argnames:
            posargs += args[:len(args) - len(argnames)]
            offset = len(args) - len(argnames)
            for iargname, argname in enumerate(argnames):
                ind = offset + iargname
                if argname in kwargs:
                    msg = "keyword argument '{0}' already defined"\
                        .format(argname)
                    raise FyppFatalError(msg, fname, spans[ind + 1])
                kwargs[argname] = args[ind]
        else:
            posargs += args

        return posargs, kwargs