accept(filter_visitor< FeatureT > &v)=0 | mapnik::expression< FeatureT > | [pure virtual] |
clone() const =0 | mapnik::expression< FeatureT > | [pure virtual] |
get_value(FeatureT const &feature) const =0 | mapnik::expression< FeatureT > | [pure virtual] |
to_string() const =0 | mapnik::expression< FeatureT > | [pure virtual] |
~expression() | mapnik::expression< FeatureT > | [inline, virtual] |