ast_translator.py 文件源码

def _translate_node(self, node, in_call=False):
        if isinstance(node, ast.AST):
            if self.current_constant and type(node) not in [ast.Num, ast.Str, ast.List]:
                raise translation_error(
                    'You can initialize constants only with literals',
                    (node[0].lineno, node[0].col_offset),
                    self.lines[node[0].lineno],
                    right='K = [2, 4]',
                    wrong='K = [2, x]')

            fields = {field: getattr(node, field) for field in node._fields}
            l = getattr(node, 'lineno', None)
            if l:
                fields['location'] = l, node.col_offset
            else:
                fields['location'] = None
            if isinstance(node, ast.Attribute):
                fields['in_call'] = in_call
            return getattr(self, '_translate_%s' % type(node).__name__.lower())(**fields)
        elif isinstance(node, list):
            results = []
            for n in node:
                x = self._translate_node(n)
                if isinstance(x, list):
                    results.extend(x)
                else:
                    results.append(x)
            return results
        elif isinstance(node, dict):
            return {k: self._translate_node(v) for k, v in node.items()}
        else:
            return node