def run(self):
        if not isinstance(self.state, states.SubstitutionDef):
            raise self.error(
                'Invalid context: the "%s" directive can only be used within '
                'a substitution definition.' % self.name)
        substitution_definition = self.state_machine.node
        if 'trim' in self.options:
            substitution_definition.attributes['ltrim'] = 1
            substitution_definition.attributes['rtrim'] = 1
        if 'ltrim' in self.options:
            substitution_definition.attributes['ltrim'] = 1
        if 'rtrim' in self.options:
            substitution_definition.attributes['rtrim'] = 1
        codes = self.comment_pattern.split(self.arguments[0])[0].split()
        element = nodes.Element()
        for code in codes:
            try:
                decoded = directives.unicode_code(code)
            except __HOLE__, error:
                raise self.error(u'Invalid character code: %s\n%s'
                    % (code, ErrorString(error)))
            element += nodes.Text(decoded)
        return element.children
dataset/ETHPy150Open timonwong/OmniMarkupPreviewer/OmniMarkupLib/Renderers/libs/python2/docutils/parsers/rst/directives/misc.py/Unicode.run