aboutsummaryrefslogtreecommitdiff
path: root/vendor/windows-sys/src/core/literals.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/windows-sys/src/core/literals.rs')
-rw-r--r--vendor/windows-sys/src/core/literals.rs114
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
-}