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class Expression:
def __init__(self, env, expr):
self.env = env
self.tmpl = env.jinja_env.from_string(f"{{{{ __result__({expr}) }}}}")
def evaluate(self, pad=None, this=None, values=None, alt=None):
result = []
def result_func(value):
result.append(value)
return ""
values = self.env.make_default_tmpl_values(pad, this, values, alt)
values["__result__"] = result_func
self.tmpl.render(values)
return result[0]
class FormatExpression:
def __init__(self, env, expr):
self.env = env
self.tmpl = env.jinja_env.from_string(expr)
def evaluate(self, pad=None, this=None, values=None, alt=None):
values = self.env.make_default_tmpl_values(pad, this, values, alt)
return self.tmpl.render(values)
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