Generated bindings don't transfer doxygen documentation comments for enum variants

[albel727]

Used software versions

bindgen: v0.32.3
llvm/clang: 5.0.1

Input C/C++ Header

/** Document enum */
enum B {
    /// Document field with three slashes
    VAR_A = 0,
    /** Document field with preceeding star */
    VAR_B = 1,
    /*! Document field with preceeding exclamation */
    VAR_C = 2,
    VAR_D = 3, /**< Document field with following star */
    VAR_E = 4, /*!< Document field with following exclamation */
};

Bindgen Invocation

    let bindings = bindgen::Builder::default()
        .header("input.h")
        .layout_tests(false)
        .generate().unwrap();

Also same with any of .constified_enum(".*")/.rustified_enum(".*")/.bitfield_enum(".*")/.prepend_enum_name("false").

Actual Results

pub const B_VAR_A: B = 0;
pub const B_VAR_B: B = 1;
pub const B_VAR_C: B = 2;
pub const B_VAR_D: B = 3;
pub const B_VAR_E: B = 4;
pub type B = u32;

Expected Results

Generated enum constants and, when possible, enum type itself, should have the documentation comments, just like it is now done for struct.

[fitzgen]

Thanks for filing an issue! I agree that it would be great if these comments were persisted in the emitted bindings.

[emilio]

We already have that info from clang, so should be straight forward...

[albel727]

Works for me. Thanks!