24 lines
1.0 KiB
Rust
24 lines
1.0 KiB
Rust
use crate::string::RustString;
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pub(crate) fn err_to_ruststring(e: impl std::string::ToString) -> RustString<'static> {
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RustString::from(e.to_string())
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}
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/// An implementation of Vec::into_raw_parts, which is still unstable. Returns ptr, len, cap.
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pub(crate) fn vec_into_raw_parts<T>(vec: Vec<T>) -> (*mut T, usize, usize) {
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// emulate Vec::into_raw_parts():
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// - disable dropping the Vec with ManuallyDrop
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// - extract ptr, len, and capacity using those methods
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let mut vec = std::mem::ManuallyDrop::new(vec);
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(vec.as_mut_ptr(), vec.len(), vec.capacity())
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}
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/// An implementation of String::into_raw_parts, which is still unstable. Returns ptr, len, cap.
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pub(crate) fn string_into_raw_parts(string: String) -> (*mut u8, usize, usize) {
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// emulate String::into_raw_parts():
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// - disable dropping the String with ManuallyDrop
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// - extract ptr, len, and capacity using those methods
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let mut string = std::mem::ManuallyDrop::new(string);
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(string.as_mut_ptr(), string.len(), string.capacity())
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}
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