80 lines
1.5 KiB
Markdown
80 lines
1.5 KiB
Markdown
# t00027 - Template decorator pattern
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## Config
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```yaml
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compilation_database_dir: ..
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output_directory: puml
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diagrams:
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t00027_class:
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type: class
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glob:
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- ../../tests/t00027/t00027.cc
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using_namespace:
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- clanguml::t00027
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include:
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namespaces:
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- clanguml::t00027
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```
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## Source code
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File t00027.cc
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```cpp
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#include <memory>
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#include <tuple>
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#include <type_traits>
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namespace clanguml {
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namespace t00027 {
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class Shape {
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public:
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virtual void display() = 0;
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virtual ~Shape() = default;
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};
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template <template <typename> class... T>
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class Line : public Shape, public T<Line<>>... {
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public:
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void display() override
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{
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std::apply([](auto &&...x) { (x.display(), ...); },
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std::forward_as_tuple(T<Line<>>()...));
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}
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};
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template <template <typename> class... T>
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class Text : public Shape, public T<Text<>>... {
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public:
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void display() override
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{
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std::apply([](auto &&...x) { (x.display(), ...); },
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std::forward_as_tuple(T<Text<>>()...));
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}
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};
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struct ShapeDecorator {
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virtual void display() = 0;
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};
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template <typename T> class Color : public ShapeDecorator {
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public:
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void display() override { }
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};
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template <typename T> class Weight : public ShapeDecorator {
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public:
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void display() override { }
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};
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struct Window {
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Line<Color, Weight> border;
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Line<Color> divider;
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Text<Color, Weight> title;
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Text<Color> description;
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};
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}
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}
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```
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## Generated UML diagrams
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