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libcore: str::unsafe::from_buf_len_nocopy => form_slice

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This commit is contained in:
Erick Tryzelaar 2012-09-10 07:57:10 -07:00
parent d0d68c6036
commit e3f5403052
1 changed files with 8 additions and 9 deletions
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17
src/libcore/str.rs
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@ -1967,10 +1967,10 @@ mod raw {
export
from_buf,
from_buf_len,
from_buf_len_nocopy,
from_c_str,
from_c_str_len,
from_bytes,
form_slice,
slice_bytes,
view_bytes,
push_byte,
@ -2003,14 +2003,6 @@ mod raw {
return ::unsafe::transmute(move v);
}
/// Create a Rust string from a *u8 buffer of the given length
/// without copying
unsafe fn from_buf_len_nocopy(buf: &a / *u8, len: uint) -> &a / str {
let v = (*buf, len + 1);
assert is_utf8(::unsafe::reinterpret_cast(&v));
return ::unsafe::transmute(move v);
}
/// Create a Rust string from a null-terminated C string
unsafe fn from_c_str(c_str: *libc::c_char) -> ~str {
from_buf(::unsafe::reinterpret_cast(&c_str))
@ -2031,6 +2023,13 @@ mod raw {
/// Converts a byte to a string.
unsafe fn from_byte(u: u8) -> ~str { raw::from_bytes([u]) }
/// Form a slice from a *u8 buffer of the given length without copying.
unsafe fn buf_as_slice<T>(buf: *u8, len: uint, f: fn(&& &str) -> T) -> T {
let v = (*buf, len + 1);
assert is_utf8(::unsafe::reinterpret_cast(&v));
f(::unsafe::transmute(move v))
}
/**
* Takes a bytewise (not UTF-8) slice from a string.
*