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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| class CustomTypeInput : public InputSection | ||
| { | ||
| public: | ||
| struct LabeledPosition | ||
| { | ||
| std::string letters; | ||
| std::array<int, 3> numbers; | ||
| }; | ||
| CustomTestInput() | ||
| { | ||
| ... | ||
| attributes = {"name", "custom_attribute"}; | ||
| custom = {"labeled_position", "custom_attribute"}; | ||
| } | ||
| void setFromStreamCustom(const std::string& ename, const std::string& name, std::istringstream& svalue) override | ||
| { | ||
| if (ename == "labeled_position") | ||
| { | ||
| LabeledPosition ws; | ||
| svalue >> ws.letters; | ||
| svalue >> ws.numbers[0]; | ||
| svalue >> ws.numbers[1]; | ||
| svalue >> ws.numbers[2]; | ||
| values_[name] = ws; | ||
| } | ||
| else if (name == "custom_attribute") | ||
| { | ||
| std::string cus_at; | ||
| // otherwise you will get not consume the entire attribute just the next piece as determine by operator>> and | ||
| // the type you are going into. | ||
| std::getline(svalue, cus_at); | ||
| ... // do your custom parsing. | ||
| values_[name] = cus_at; | ||
| } | ||
| else | ||
| throw std::runtime_error("bad name passed: " + name + | ||
| " or custom setFromStream not implemented in derived class."); | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /** Generic delgate input class. | ||
| * The delegate input requires: | ||
| * A constructor that takes an xmlNodePtr | ||
| * A factoryFunction that matches the signature discussed in InputSection::DelegateHandler | ||
| */ | ||
|
|
||
| class AnotherInput | ||
| { | ||
| public: | ||
| class AnotherInputSection : public InputSection | ||
| { | ||
| ... | ||
| }; | ||
|
|
||
| AnotherInput(xmlNodePtr cur) | ||
| { | ||
| ... | ||
| } | ||
| }; | ||
|
|
||
| /// Factory function for the delegate Input class. | ||
| std::any makeAnotherInput(xmlNodePtr cur, std::string& value_label) | ||
| { | ||
| AnotherInput another_input{cur}; | ||
| value_label = another_input.get_name(); | ||
| return another_input; | ||
| } | ||
|
|
||
| /** Input class delegating to other input classes. | ||
| */ | ||
| class DelegatingInput | ||
| { | ||
| class DelegatingInputSection : public InputSection | ||
| { | ||
| public: | ||
| DelegatingInputSection() | ||
| { | ||
| section_name = "DelegateTest"; | ||
| ... | ||
| delegates = {"anotherinput"}; | ||
| InputSection::registerDelegate("anotherinput", makeAnotherInput); | ||
| } | ||
| }; | ||
|
|
||
| public: | ||
| DelegatingInput(xmlNodePtr cur) { dins_.readXML(cur); } | ||
|
|
||
| // rather than write a real input class we just pass through InputSection for this test. | ||
| bool has(const std::string& name) const { return dins_.has(name); } | ||
| template<typename T> | ||
| T get(const std::string& name) const | ||
| { | ||
| return dins_.get<T>(name); | ||
| } | ||
|
|
||
| private: | ||
| std::string name_ = "DelegatingInput"; | ||
| DelegatingInputSection dins_; | ||
| }; |
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