0.6.3
C++ to UML diagram generator based on Clang
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t00098 - Test case for decorator design pattern using static polymorphism

Config

diagrams:
t00098_class:
type: class
title: Decorator design pattern with templates and concepts
glob:
- t00098.cc
using_namespace: clanguml::t00098
include:
namespaces:
- clanguml::t00098

Source code

File tests/t00098/t00098.cc

#include <concepts>
#include <memory>
#include <string>
namespace clanguml {
namespace t00098 {
template <typename T>
concept Component = requires(const T &t) {
{ t.operation() } -> std::convertible_to<std::string>;
};
struct ConcreteComponent {
std::string operation() const { return "ConcreteComponent"; }
};
template <Component Inner> class ConcreteDecoratorA {
Inner inner_;
public:
explicit ConcreteDecoratorA(Inner inner)
: inner_(std::move(inner))
{
}
std::string operation() const
{
return "ConcreteDecoratorA(" + inner_.operation() + ")";
}
std::string added_behavior() const { return "Added behavior A"; }
};
template <Component Inner> class ConcreteDecoratorB {
Inner inner_;
public:
explicit ConcreteDecoratorB(Inner inner)
: inner_(std::move(inner))
{
}
std::string operation() const
{
return "ConcreteDecoratorB(" + inner_.operation() + ")";
}
void additional_method() const { }
};
template <Component C> class Client {
C component_;
public:
explicit Client(C component)
: component_(std::move(component))
{
}
std::string execute() { return component_.operation(); }
};
using BAClient =
Client<ConcreteDecoratorB<ConcreteDecoratorA<ConcreteComponent>>>;
struct R {
BAClient client;
};
int main()
{
R r{.client = Client{
ConcreteDecoratorB{ConcreteDecoratorA{ConcreteComponent{}}}}};
std::puts(r.client.execute().c_str());
return 0;
}
} // namespace t00098
} // namespace clanguml

Generated PlantUML diagrams

Generated Mermaid diagrams

Generated JSON models

{
"diagram_type": "class",
"elements": [
{
"display_name": "Component<T>",
"id": "8876837216240248889",
"name": "Component",
"namespace": "clanguml::t00098",
"parameters": [
{
"name": "t",
"type": "const T &"
}
],
"source_location": {
"column": 9,
"file": "t00098.cc",
"line": 9,
"translation_unit": "t00098.cc"
},
"statements": [
"{t.operation()} -> std::convertible_to<std::string>"
],
"type": "concept"
},
{
"bases": [],
"display_name": "ConcreteComponent",
"id": "16561016950896338451",
"is_abstract": false,
"is_nested": false,
"is_struct": true,
"is_template": false,
"is_union": false,
"members": [],
"methods": [
{
"access": "public",
"display_name": "operation",
"is_const": true,
"is_consteval": false,
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"is_constructor": false,
"is_copy_assignment": false,
"is_coroutine": false,
"is_defaulted": false,
"is_deleted": false,
"is_move_assignment": false,
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"name": "operation",
"parameters": [],
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"column": 17,
"file": "t00098.cc",
"line": 14,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "std::string"
}
],
"name": "ConcreteComponent",
"namespace": "clanguml::t00098",
"source_location": {
"column": 8,
"file": "t00098.cc",
"line": 13,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "class"
},
{
"bases": [],
"display_name": "ConcreteDecoratorA<Component Inner>",
"id": "5213864195876733834",
"is_abstract": false,
"is_nested": false,
"is_struct": false,
"is_template": true,
"is_union": false,
"members": [
{
"access": "private",
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"name": "inner_",
"source_location": {
"column": 11,
"file": "t00098.cc",
"line": 18,
"translation_unit": "t00098.cc"
},
"type": "Inner"
}
],
"methods": [
{
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"display_name": "ConcreteDecoratorA",
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"is_pure_virtual": false,
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"name": "ConcreteDecoratorA",
"parameters": [
{
"name": "inner",
"type": "Inner"
}
],
"source_location": {
"column": 14,
"file": "t00098.cc",
"line": 21,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "void"
},
{
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"name": "operation",
"parameters": [],
"source_location": {
"column": 17,
"file": "t00098.cc",
"line": 26,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "std::string"
},
{
"access": "public",
"display_name": "added_behavior",
"is_const": true,
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"is_constructor": false,
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"is_virtual": false,
"name": "added_behavior",
"parameters": [],
"source_location": {
"column": 17,
"file": "t00098.cc",
"line": 31,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "std::string"
}
],
"name": "ConcreteDecoratorA",
"namespace": "clanguml::t00098",
"source_location": {
"column": 34,
"file": "t00098.cc",
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},
"template_parameters": [
{
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"name": "Inner",
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}
],
"type": "class"
},
{
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"id": "5066890982799846966",
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"members": [
{
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"column": 11,
"file": "t00098.cc",
"line": 35,
"translation_unit": "t00098.cc"
},
"type": "Inner"
}
],
"methods": [
{
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"name": "ConcreteDecoratorB",
"parameters": [
{
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"type": "Inner"
}
],
"source_location": {
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"file": "t00098.cc",
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"translation_unit": "t00098.cc"
},
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"type": "void"
},
{
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"parameters": [],
"source_location": {
"column": 17,
"file": "t00098.cc",
"line": 43,
"translation_unit": "t00098.cc"
},
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"type": "std::string"
},
{
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"name": "additional_method",
"parameters": [],
"source_location": {
"column": 10,
"file": "t00098.cc",
"line": 48,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
"type": "void"
}
],
"name": "ConcreteDecoratorB",
"namespace": "clanguml::t00098",
"source_location": {
"column": 34,
"file": "t00098.cc",
"line": 34,
"translation_unit": "t00098.cc"
},
"template_parameters": [
{
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"kind": "template_type",
"name": "Inner",
"template_parameters": []
}
],
"type": "class"
},
{
"bases": [],
"display_name": "Client<Component C>",
"id": "15308488410191553172",
"is_abstract": false,
"is_nested": false,
"is_struct": false,
"is_template": true,
"is_union": false,
"members": [
{
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"name": "component_",
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"file": "t00098.cc",
"line": 52,
"translation_unit": "t00098.cc"
},
"type": "C"
}
],
"methods": [
{
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"is_noexcept": false,
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"name": "Client",
"parameters": [
{
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}
],
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"line": 55,
"translation_unit": "t00098.cc"
},
"template_parameters": [],
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},
{
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"is_constructor": false,
"is_copy_assignment": false,
"is_coroutine": false,
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"is_deleted": false,
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"name": "execute",
"parameters": [],
"source_location": {
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"file": "t00098.cc",
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},
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}
],
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},
"template_parameters": [
{
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}
],
"type": "class"
},
{
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"members": [],
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},
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}
],
"type": "class"
},
{
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},
"template_parameters": [
{
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"kind": "argument",
"template_parameters": [
{
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"kind": "argument",
"template_parameters": [],
"type": "clanguml::t00098::ConcreteComponent"
}
],
"type": "ConcreteDecoratorA"
}
],
"type": "class"
},
{
"bases": [],
"display_name": "Client<ConcreteDecoratorB<ConcreteDecoratorA<ConcreteComponent>>>",
"id": "11754703513508804720",
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"methods": [],
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},
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{
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"kind": "argument",
"template_parameters": [
{
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"kind": "argument",
"template_parameters": [],
"type": "clanguml::t00098::ConcreteComponent"
}
],
"type": "clanguml::t00098::ConcreteDecoratorA"
}
],
"type": "ConcreteDecoratorB"
}
],
"type": "class"
},
{
"bases": [],
"display_name": "R",
"id": "9384409517498194198",
"is_abstract": false,
"is_nested": false,
"is_struct": true,
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"is_union": false,
"members": [
{
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"name": "client",
"source_location": {
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"file": "t00098.cc",
"line": 67,
"translation_unit": "t00098.cc"
},
"type": "BAClient"
}
],
"methods": [],
"name": "R",
"namespace": "clanguml::t00098",
"source_location": {
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"file": "t00098.cc",
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},
"template_parameters": [],
"type": "class"
}
],
"name": "t00098_class",
"package_type": "namespace",
"relationships": [
{
"destination": "8876837216240248889",
"label": "Inner",
"source": "5213864195876733834",
"type": "constraint"
},
{
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"label": "Inner",
"source": "5066890982799846966",
"type": "constraint"
},
{
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"label": "C",
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{
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{
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{
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{
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"type": "instantiation"
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{
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"label": "client",
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"type": "aggregation"
}
],
"title": "Decorator design pattern with templates and concepts",
"using_namespace": "clanguml::t00098"
}

Generated GraphML models

<?xml version="1.0"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<desc><![CDATA[Decorator design pattern with templates and concepts]]></desc>
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<key attr.name="stereotype" attr.type="string" for="node" id="nd3" />
<key attr.name="url" attr.type="string" for="node" id="nd4" />
<key attr.name="tooltip" attr.type="string" for="node" id="nd5" />
<key attr.name="is_template" attr.type="boolean" for="node" id="nd6" />
<key attr.name="type" attr.type="string" for="edge" id="ed0" />
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<graph id="g0" edgedefault="directed" parse.nodeids="canonical" parse.edgeids="canonical" parse.order="nodesfirst">
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<data key="nd2"><![CDATA[Component<T>]]></data>
</node>
<node id="n1">
<data key="nd1">class</data>
<data key="nd2"><![CDATA[ConcreteComponent]]></data>
<data key="nd6">false</data>
</node>
<node id="n2">
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</node>
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</node>
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<data key="nd2"><![CDATA[Client<Component C>]]></data>
<data key="nd6">true</data>
</node>
<node id="n5">
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<node id="n6">
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<data key="nd6">true</data>
</node>
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</node>
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<data key="ed0">aggregation</data>
<data key="ed2">client</data>
<data key="ed1">public</data>
</edge>
</graph>
</graphml>
  Copyright © 2022-present Bartek Kryza Generated by  doxygen 1.9.7