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Annotation Glossary

A

array

Parameter points to an array of items.

C

closure

This parameter is a 'user_data', for callbacks; many bindings can pass NULL here.

constructor

This symbol is a constructor, not a static method.

D

default

Default parameter value (for in case the shadows-to function has less parameters).

destroy

This parameter is a 'destroy_data', for callbacks.

E

element-type

Generics and defining elements of containers and arrays.

I

in

Parameter for input. Default is transfer none.

inout

Parameter for input and for returning results. Default is transfer full.

N

not nullable

NULL must not be passed as the value in, out, in-out; or as a return value.

nullable

NULL may be passed as the value in, out, in-out; or as a return value.

O

optional

NULL may be passed instead of a pointer to a location.

out

Parameter for returning results. Default is transfer full.

out callee-allocates

Out parameter, where caller must allocate storage.

out caller-allocates

Out parameter, where caller must allocate storage.

R

rename-to

Rename the original symbol's name to SYMBOL.

S

scope async

The callback is valid until first called.

skip

Exposed in C code, not necessarily available in other languages.

T

transfer container

Free data container after the code is done.

transfer full

Free data after the code is done.

transfer none

Don't free data after the code is done.

type

Override the parsed C type with given type.

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