68 lines
1.2 KiB
Markdown
68 lines
1.2 KiB
Markdown
# t20008 - Constexpr if sequence diagram test case
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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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t20008_sequence:
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type: sequence
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glob:
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- ../../tests/t20008/t20008.cc
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include:
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namespaces:
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- clanguml::t20008
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using_namespace:
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- clanguml::t20008
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start_from:
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- function: "clanguml::t20008::tmain()"
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```
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## Source code
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File t20008.cc
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```cpp
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#include <string>
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#include <type_traits>
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namespace clanguml {
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namespace t20008 {
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template <typename T> struct A {
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void a1(T arg) { }
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void a2(T arg) { }
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void a3(T arg) { }
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};
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template <typename T> struct B {
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A<T> a;
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void b(T arg)
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{
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if constexpr (std::is_integral_v<T>) {
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a.a1(arg);
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}
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else if constexpr (std::is_pointer_v<T>) {
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a.a2(arg);
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}
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else {
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a.a3(arg);
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}
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}
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};
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void tmain()
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{
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using namespace std::string_literals;
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B<int> bint;
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B<const char *> bcharp;
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B<std::string> bstring;
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bint.b(1);
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bcharp.b("1");
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bstring.b("1"s);
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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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