diff options
Diffstat (limited to 'dom/docs')
| -rw-r--r-- | dom/docs/webIdlBindings/index.md | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/dom/docs/webIdlBindings/index.md b/dom/docs/webIdlBindings/index.md index a239179071..eb2586210d 100644 --- a/dom/docs/webIdlBindings/index.md +++ b/dom/docs/webIdlBindings/index.md @@ -894,10 +894,7 @@ which becomes the value `_empty`. For a Web IDL enum named `MyEnum`, the C++ enum is named `MyEnum` and placed in the `mozilla::dom` namespace, while the values are placed in -the `mozilla::dom::MyEnum` namespace. There is also a -`mozilla::dom::MyEnumValues::strings` which is an array of -`mozilla::dom::EnumEntry` structs that gives access to the string -representations of the values. +the `mozilla::dom::MyEnum` namespace. The type of the enum class is automatically selected to be the smallest unsigned integer type that can hold all the values. In practice, this @@ -924,12 +921,35 @@ enum class MyEnum : uint8_t { _empty, Another }; - -namespace MyEnumValues { -extern const EnumEntry strings[10]; -} // namespace MyEnumValues ``` +`mozilla::dom::GetEnumString` is a templated helper function declared in +[`BindingUtils.h`](https://searchfox.org/mozilla-central/source/dom/bindings/BindingUtils.h) +and exported to `mozilla/dom/BindingUtils.h` that can be used to convert an enum +value to its corresponding string value. It returns a `const nsCString&` +containing the string value. + +`mozilla::dom::StringToEnum` is a templated helper function in +[`BindingUtils.h`](https://searchfox.org/mozilla-central/source/dom/bindings/BindingUtils.h) +and exported to `mozilla/dom/BindingUtils.h` that can be used to convert a +string to the corresponding enum value. It needs to be supplied with the enum +class as a template argument, and returns a `mozilla::Maybe<Enum>`. If the string +value passed to it as an argument is not one of the string values for the enum +then it returns `mozilla::Nothing()`, else it returns the right enum value in +the `mozilla::Maybe`. + +`mozilla::dom::WebIDLEnumSerializer` is a templated alias in +[`BindingIPCUtils.h`](https://searchfox.org/mozilla-central/source/dom/bindings/BindingIPCUtils.h) +exported to `mozilla/dom/BindingIPCUtils.h` to implement an IPC serializer with +the right validation for WebIDL enums. It uses a +`mozilla::MaxContinuousEnumValue` that is generated for every WebIDL enum to +implement the validation. + +`mozilla::dom::MakeWebIDLEnumeratedRange` is a templated helper function in +[`BindingUtils.h`](https://searchfox.org/mozilla-central/source/dom/bindings/BindingUtils.h) +and exported to `mozilla/dom/BindingUtils.h` that can be used to create a +`mozilla::EnumeratedRange` for a WebIDL enum. + #### Callback function types Callback functions are represented as an object, inheriting from |