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Add notes on base_class conversions

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Jason Turner 2016-12-02 20:32:47 -07:00 committed by GitHub
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cheatsheet.md
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@ -92,6 +92,7 @@ chai.add(chaiscript::user_type<MyClass>(), "MyClass");
User defined type conversions are possible, defined in either script or in C++. User defined type conversions are possible, defined in either script or in C++.
### ChaiScript Defined Conversions ### ChaiScript Defined Conversions
Function objects (including lambdas) can be used to add type conversions Function objects (including lambdas) can be used to add type conversions
@ -115,6 +116,21 @@ Calling a user defined type conversion that takes a lambda
chai.add(chaiscript::type_conversion<TestBaseType, Type2>([](const TestBaseType &t_bt) { /* return converted thing */ })); chai.add(chaiscript::type_conversion<TestBaseType, Type2>([](const TestBaseType &t_bt) { /* return converted thing */ }));
``` ```
### Class Hierarchies
If you want objects to be convertable between base and derived classes, you must tell ChaiScritp about the relationship.
```
chai.add(chaiscript::base_class<Base, Derived>());
```
If you have multiple classes in your inheritance graph, you will probably want to tell ChaiScript about all relationships.
```
chai.add(chaiscript::base_class<Base, Derived>());
chai.add(chaiscript::base_class<Derived, MoreDerived>());
chai.add(chaiscript::base_class<Base, MoreDerived>());
```
### Helpers ### Helpers