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75 lines
1.7 KiB
Rust
75 lines
1.7 KiB
Rust
use std::ffi::CString;
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use std::os::raw::c_char;
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#[macro_export]
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macro_rules! take_until_and_consume (
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( $i:expr, $needle:expr ) => (
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{
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let input: &[u8] = $i;
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let (rem, res) = ::nom::take_until!(input, $needle)?;
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let (rem, _) = ::nom::take!(rem, $needle.len())?;
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Ok((rem, res))
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}
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);
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);
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#[cfg(not(feature = "debug-validate"))]
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#[macro_export]
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macro_rules! debug_validate_bug_on (
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($item:expr) => {};
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);
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#[cfg(feature = "debug-validate")]
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#[macro_export]
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macro_rules! debug_validate_bug_on (
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($item:expr) => {
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if $item {
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panic!("Condition check failed");
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}
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};
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);
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#[cfg(not(feature = "debug-validate"))]
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#[macro_export]
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macro_rules! debug_validate_fail (
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($msg:expr) => {};
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);
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#[cfg(feature = "debug-validate")]
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#[macro_export]
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macro_rules! debug_validate_fail (
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($msg:expr) => {
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// Wrap in a conditional to prevent unreachable code warning in caller.
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if true {
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panic!($msg);
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}
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};
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);
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/// Convert a String to C-compatible string
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///
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/// This function will consume the provided data and use the underlying bytes to construct a new
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/// string, ensuring that there is a trailing 0 byte. This trailing 0 byte will be appended by this
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/// function; the provided data should *not* contain any 0 bytes in it.
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///
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/// Returns a valid pointer, or NULL
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pub fn rust_string_to_c(s: String) -> *mut c_char {
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CString::new(s)
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.map(|c_str| c_str.into_raw())
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.unwrap_or(std::ptr::null_mut())
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}
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/// Free a CString allocated by Rust (for ex. using `rust_string_to_c`)
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///
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/// # Safety
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///
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/// s must be allocated by rust, using `CString::new`
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#[no_mangle]
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pub unsafe extern "C" fn rs_cstring_free(s: *mut c_char) {
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if s.is_null() {
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return;
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}
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drop(CString::from_raw(s));
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}
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