Writing a Type

Each Vuo Type provides 3 methods:

• <Type> <Type>_valueFromString(const char * initializer) — Converts a string representation of a <Type> value to an actual <Type> value. If <Type> is reference counted, this function must register the returned value (e.g. with vuoRegister()).
• char * <Type>_stringFromValue(const Type value) — Converts a <Type> value to its string representation. The returned C string must be heap-allocated, since it will be freed by the caller.
• char * <Type>_summaryFromValue(const Type value) — Produces a brief human-readable summary of value. The returned C string must be heap-allocated, since it will be freed by the caller.

<Type>_valueFromString is called when a composition starts running to initialize each port value. <Type>_valueFromString and <Type>_stringFromValue are called by the running composition to serialize and unserialize port values and node instance data when the composition is live-updated.