alef 0.79.4

Opinionated polyglot binding generator for Rust libraries
Documentation 
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{% if source_cfg -%}
#[cfg({{ source_cfg }})]
{% endif -%}
/// Create a `{{ enum_name }}` from a JSON string. Returns 0 on failure.
/// # Safety
/// JSON string must be valid UTF-8 and null-terminated.
/// Returned handle must be freed with `{{ prefix }}_{{ enum_snake }}_free`.
#[unsafe(no_mangle)]
pub unsafe extern "C" fn {{ prefix }}_{{ enum_snake }}_from_json(json: *const c_char) -> AlefHandle {
    catch_ffi_panic(0, || {
    clear_last_error();
    if json.is_null() {
        set_last_error(1, "Null pointer passed for JSON string");
        return 0;
    }
    // SAFETY: null check above guarantees json is a valid pointer; string is valid UTF-8 from caller.
    let c_str = match unsafe { CStr::from_ptr(json) }.to_str() {
        Ok(s) => s,
        Err(_) => {
            set_last_error(1, "Invalid UTF-8 in JSON string");
            return 0;
        }
    };
    match serde_json::from_str::<{{ qualified }}>(c_str) {
        Ok(val) => match insert_handle(val) {
            Ok(handle) => handle,
            Err(error) => { set_handle_error(&error); 0 }
        },
        Err(e) => {
            set_last_error(2, &e.to_string());
            0
        }
    }
    })
}