cenum

cenum is a cangjie macro package that mimics C like enums.

Macros

• Enum - C like enum (starts at 0)
• CEnum - C like enum ABI compatible with C (starts at 0)
• FlagEnum - C like flags enum (starts at 0)
• FlagEnum0 - C like flags enum (starts at 0)
• FlagEnum1 - C like flags enum (starts at 1)
• CFlagEnum - C like flags enum ABI compatible with C (starts at 0)
• CFlagEnum0 - C like flags enum ABI compatible with C (starts at 0)
• CFlagEnum1 - C like flags enum ABI compatible with C (starts at 1)

Examples

Simple enum

Generates a struct that holds an Int32 value.

@Enum[SimpleEnum](
    Val1  // 0
    Val2  // 1
    Val3  // 2
)

C compatible enum

The underlying generated struct has the @C annotation and can be passed to foreign functions. The size of the struct is Int32 by default. Structs are passed by value in Cangjie.

@CEnum[SimpleEnum](
    Val1 = 1  // 1
    Val2      // 2
    Val3      // 3
)

Flags enum

Flags enum that automatically uses the next free value by default.

@FlagEnum[SimpleFlagEnum](
    None  // 0
    Val1  // 1
    Val2  // 2
    Val3  // 4
)

...

let flags = SimpleFlagEnum.Val2 | SimpleFlagEnum.Val3
flags.isSet(SimpleFlagEnum2.Val2)

License

MIT No Attribution