diff options
Diffstat (limited to 'vendor/windows-sys/src/core/literals.rs')
-rw-r--r-- | vendor/windows-sys/src/core/literals.rs | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/vendor/windows-sys/src/core/literals.rs b/vendor/windows-sys/src/core/literals.rs deleted file mode 100644 index d012fb1..0000000 --- a/vendor/windows-sys/src/core/literals.rs +++ /dev/null @@ -1,114 +0,0 @@ -/// A literal UTF-8 string with a trailing null terminator. -#[macro_export] -macro_rules! s { - ($s:literal) => { - ::core::concat!($s, '\0').as_ptr() - }; -} - -/// A literal UTF-16 wide string with a trailing null terminator. -#[macro_export] -macro_rules! w { - ($s:literal) => {{ - const INPUT: &[u8] = $s.as_bytes(); - const OUTPUT_LEN: usize = $crate::core::utf16_len(INPUT) + 1; - const OUTPUT: &[u16; OUTPUT_LEN] = { - let mut buffer = [0; OUTPUT_LEN]; - let mut input_pos = 0; - let mut output_pos = 0; - while let Some((mut code_point, new_pos)) = $crate::core::decode_utf8_char(INPUT, input_pos) { - input_pos = new_pos; - if code_point <= 0xffff { - buffer[output_pos] = code_point as u16; - output_pos += 1; - } else { - code_point -= 0x10000; - buffer[output_pos] = 0xd800 + (code_point >> 10) as u16; - output_pos += 1; - buffer[output_pos] = 0xdc00 + (code_point & 0x3ff) as u16; - output_pos += 1; - } - } - &{ buffer } - }; - OUTPUT.as_ptr() - }}; -} - -pub use s; -pub use w; - -#[doc(hidden)] -pub const fn decode_utf8_char(bytes: &[u8], mut pos: usize) -> Option<(u32, usize)> { - if bytes.len() == pos { - return None; - } - let ch = bytes[pos] as u32; - pos += 1; - if ch <= 0x7f { - return Some((ch, pos)); - } - if (ch & 0xe0) == 0xc0 { - if bytes.len() - pos < 1 { - return None; - } - let ch2 = bytes[pos] as u32; - pos += 1; - if (ch2 & 0xc0) != 0x80 { - return None; - } - let result: u32 = ((ch & 0x1f) << 6) | (ch2 & 0x3f); - if result <= 0x7f { - return None; - } - return Some((result, pos)); - } - if (ch & 0xf0) == 0xe0 { - if bytes.len() - pos < 2 { - return None; - } - let ch2 = bytes[pos] as u32; - pos += 1; - let ch3 = bytes[pos] as u32; - pos += 1; - if (ch2 & 0xc0) != 0x80 || (ch3 & 0xc0) != 0x80 { - return None; - } - let result = ((ch & 0x0f) << 12) | ((ch2 & 0x3f) << 6) | (ch3 & 0x3f); - if result <= 0x7ff || (0xd800 <= result && result <= 0xdfff) { - return None; - } - return Some((result, pos)); - } - if (ch & 0xf8) == 0xf0 { - if bytes.len() - pos < 3 { - return None; - } - let ch2 = bytes[pos] as u32; - pos += 1; - let ch3 = bytes[pos] as u32; - pos += 1; - let ch4 = bytes[pos] as u32; - pos += 1; - if (ch2 & 0xc0) != 0x80 || (ch3 & 0xc0) != 0x80 || (ch4 & 0xc0) != 0x80 { - return None; - } - let result = ((ch & 0x07) << 18) | ((ch2 & 0x3f) << 12) | ((ch3 & 0x3f) << 6) | (ch4 & 0x3f); - if result <= 0xffff || 0x10ffff < result { - return None; - } - return Some((result, pos)); - } - None -} - -#[doc(hidden)] -pub const fn utf16_len(bytes: &[u8]) -> usize { - let mut pos = 0; - let mut len = 0; - while let Some((code_point, new_pos)) = decode_utf8_char(bytes, pos) { - pos = new_pos; - len += if code_point <= 0xffff { 1 } else { 2 }; - } - len -} |