mentat/ffi/src/utils.rs
Richard Newman 3dc68bcd38 Combine NamespacedKeyword and Keyword. (#689) r=nalexander
* Make properties on NamespacedKeyword/NamespacedSymbol private

* Use only a single String for NamespacedKeyword/NamespacedSymbol

* Review comments.

* Remove unsafe code in namespaced_name.

Benchmarking shows approximately zero change.

* Allow the types of ns and name to differ when constructing a NamespacedName.

* Make symbol namespaces optional.

* Normalize names of keyword/symbol constructors.

This will make the subsequent refactor much less painful.

* Use expect not unwrap.

* Merge Keyword and NamespacedKeyword.
2018-05-11 09:52:17 -07:00

64 lines
2.1 KiB
Rust

// Copyright 2018 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
pub mod strings {
use std::ffi::{
CString,
CStr
};
use std::os::raw::c_char;
use mentat::{
Keyword,
};
pub fn c_char_to_string(cchar: *const c_char) -> String {
let c_str = unsafe { CStr::from_ptr(cchar) };
let r_str = c_str.to_str().unwrap_or("");
r_str.to_string()
}
pub fn string_to_c_char<T>(r_string: T) -> *mut c_char where T: Into<String> {
CString::new(r_string.into()).unwrap().into_raw()
}
// TODO: validate. The input might not be a keyword!
pub fn kw_from_string(mut keyword_string: String) -> Keyword {
let attr_name = keyword_string.split_off(1);
let parts: Vec<&str> = attr_name.split("/").collect();
Keyword::namespaced(parts[0], parts[1])
}
}
pub mod log {
#[cfg(all(target_os="android", not(test)))]
use std::ffi::CString;
#[cfg(all(target_os="android", not(test)))]
use android;
// TODO far from ideal. And, we might actually want to println in tests.
#[cfg(all(not(target_os="android"), not(target_os="ios")))]
pub fn d(_: &str) {}
#[cfg(all(target_os="ios", not(test)))]
pub fn d(message: &str) {
eprintln!("{}", message);
}
#[cfg(all(target_os="android", not(test)))]
pub fn d(message: &str) {
let message = CString::new(message).unwrap();
let message = message.as_ptr();
let tag = CString::new("Mentat").unwrap();
let tag = tag.as_ptr();
unsafe { android::__android_log_write(android::LogLevel::Debug as i32, tag, message) };
}
}