Class TemplateExpression

tools/inspector_protocol/jinja2/environment.py:1171–1187

The :meth:`jinja2.Environment.compile_expression` method returns an instance of this object. It encapsulates the expression-like access to the template with an expression it wraps.

class TemplateExpression(object):
    """The :meth:`jinja2.Environment.compile_expression` method returns an
    instance of this object.  It encapsulates the expression-like access
    to the template with an expression it wraps.
    """

    def __init__(self, template, undefined_to_none):
        self._template = template
        self._undefined_to_none = undefined_to_none

    def __call__(self, *args, **kwargs):
        context = self._template.new_context(dict(*args, **kwargs))
        consume(self._template.root_render_func(context))
        rv = context.vars['result']
        if self._undefined_to_none and isinstance(rv, Undefined):
            rv = None
        return rv


@implements_iterator