def error()

in geneve/kql/parser.py [0:0]

• 15 lines of code
• 11 McCabe index (conditional complexity)

    def error(self, node, message, end=False, cls=KqlParseError, width=None, **kwargs):
        """Generate an error exception but dont raise it."""
        if kwargs:
            message = message.format(**kwargs)

        line_number = node.line - 1
        column = node.column - 1

        # get more lines for more informative error messages. three before + two after
        before = self.lines[:line_number + 1][-3:]
        after = self.lines[line_number + 1:][:3]

        source = '\n'.join(b for b in before)
        trailer = '\n'.join(a for a in after)

        # Determine if the error message can easily look like this
        #                                                     ^^^^
        if width is None and not end and node.line == node.end_line:
            if not self.NON_SPACE_WS.search(self.lines[line_number][column:node.end_column]):
                width = node.end_column - node.column

        if width is None:
            width = 1

        return cls(message, line_number, column, source, width=width, trailer=trailer)