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-rw-r--r--vendor/memchr/src/tests/memchr/mod.rs307
-rw-r--r--vendor/memchr/src/tests/memchr/naive.rs33
-rw-r--r--vendor/memchr/src/tests/memchr/prop.rs321
-rw-r--r--vendor/memchr/src/tests/mod.rs15
-rw-r--r--vendor/memchr/src/tests/packedpair.rs216
-rw-r--r--vendor/memchr/src/tests/substring/mod.rs232
-rw-r--r--vendor/memchr/src/tests/substring/naive.rs45
-rw-r--r--vendor/memchr/src/tests/substring/prop.rs126
-rw-r--r--vendor/memchr/src/tests/x86_64-soft_float.json15
9 files changed, 1310 insertions, 0 deletions
diff --git a/vendor/memchr/src/tests/memchr/mod.rs b/vendor/memchr/src/tests/memchr/mod.rs
new file mode 100644
index 0000000..0564ad4
--- /dev/null
+++ b/vendor/memchr/src/tests/memchr/mod.rs
@@ -0,0 +1,307 @@
+use alloc::{
+ string::{String, ToString},
+ vec,
+ vec::Vec,
+};
+
+use crate::ext::Byte;
+
+pub(crate) mod naive;
+#[macro_use]
+pub(crate) mod prop;
+
+const SEEDS: &'static [Seed] = &[
+ Seed { haystack: "a", needles: &[b'a'], positions: &[0] },
+ Seed { haystack: "aa", needles: &[b'a'], positions: &[0, 1] },
+ Seed { haystack: "aaa", needles: &[b'a'], positions: &[0, 1, 2] },
+ Seed { haystack: "", needles: &[b'a'], positions: &[] },
+ Seed { haystack: "z", needles: &[b'a'], positions: &[] },
+ Seed { haystack: "zz", needles: &[b'a'], positions: &[] },
+ Seed { haystack: "zza", needles: &[b'a'], positions: &[2] },
+ Seed { haystack: "zaza", needles: &[b'a'], positions: &[1, 3] },
+ Seed { haystack: "zzza", needles: &[b'a'], positions: &[3] },
+ Seed { haystack: "\x00a", needles: &[b'a'], positions: &[1] },
+ Seed { haystack: "\x00", needles: &[b'\x00'], positions: &[0] },
+ Seed { haystack: "\x00\x00", needles: &[b'\x00'], positions: &[0, 1] },
+ Seed { haystack: "\x00a\x00", needles: &[b'\x00'], positions: &[0, 2] },
+ Seed { haystack: "zzzzzzzzzzzzzzzza", needles: &[b'a'], positions: &[16] },
+ Seed {
+ haystack: "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzza",
+ needles: &[b'a'],
+ positions: &[32],
+ },
+ // two needles (applied to memchr2 + memchr3)
+ Seed { haystack: "az", needles: &[b'a', b'z'], positions: &[0, 1] },
+ Seed { haystack: "az", needles: &[b'a', b'z'], positions: &[0, 1] },
+ Seed { haystack: "az", needles: &[b'x', b'y'], positions: &[] },
+ Seed { haystack: "az", needles: &[b'a', b'y'], positions: &[0] },
+ Seed { haystack: "az", needles: &[b'x', b'z'], positions: &[1] },
+ Seed { haystack: "yyyyaz", needles: &[b'a', b'z'], positions: &[4, 5] },
+ Seed { haystack: "yyyyaz", needles: &[b'z', b'a'], positions: &[4, 5] },
+ // three needles (applied to memchr3)
+ Seed {
+ haystack: "xyz",
+ needles: &[b'x', b'y', b'z'],
+ positions: &[0, 1, 2],
+ },
+ Seed {
+ haystack: "zxy",
+ needles: &[b'x', b'y', b'z'],
+ positions: &[0, 1, 2],
+ },
+ Seed { haystack: "zxy", needles: &[b'x', b'a', b'z'], positions: &[0, 1] },
+ Seed { haystack: "zxy", needles: &[b't', b'a', b'z'], positions: &[0] },
+ Seed { haystack: "yxz", needles: &[b't', b'a', b'z'], positions: &[2] },
+];
+
+/// Runs a host of substring search tests.
+///
+/// This has support for "partial" substring search implementations only work
+/// for a subset of needles/haystacks. For example, the "packed pair" substring
+/// search implementation only works for haystacks of some minimum length based
+/// of the pair of bytes selected and the size of the vector used.
+pub(crate) struct Runner {
+ needle_len: usize,
+}
+
+impl Runner {
+ /// Create a new test runner for forward and reverse byte search
+ /// implementations.
+ ///
+ /// The `needle_len` given must be at most `3` and at least `1`. It
+ /// corresponds to the number of needle bytes to search for.
+ pub(crate) fn new(needle_len: usize) -> Runner {
+ assert!(needle_len >= 1, "needle_len must be at least 1");
+ assert!(needle_len <= 3, "needle_len must be at most 3");
+ Runner { needle_len }
+ }
+
+ /// Run all tests. This panics on the first failure.
+ ///
+ /// If the implementation being tested returns `None` for a particular
+ /// haystack/needle combination, then that test is skipped.
+ pub(crate) fn forward_iter<F>(self, mut test: F)
+ where
+ F: FnMut(&[u8], &[u8]) -> Option<Vec<usize>> + 'static,
+ {
+ for seed in SEEDS.iter() {
+ if seed.needles.len() > self.needle_len {
+ continue;
+ }
+ for t in seed.generate() {
+ let results = match test(t.haystack.as_bytes(), &t.needles) {
+ None => continue,
+ Some(results) => results,
+ };
+ assert_eq!(
+ t.expected,
+ results,
+ "needles: {:?}, haystack: {:?}",
+ t.needles
+ .iter()
+ .map(|&b| b.to_char())
+ .collect::<Vec<char>>(),
+ t.haystack,
+ );
+ }
+ }
+ }
+
+ /// Run all tests in the reverse direction. This panics on the first
+ /// failure.
+ ///
+ /// If the implementation being tested returns `None` for a particular
+ /// haystack/needle combination, then that test is skipped.
+ pub(crate) fn reverse_iter<F>(self, mut test: F)
+ where
+ F: FnMut(&[u8], &[u8]) -> Option<Vec<usize>> + 'static,
+ {
+ for seed in SEEDS.iter() {
+ if seed.needles.len() > self.needle_len {
+ continue;
+ }
+ for t in seed.generate() {
+ let mut results = match test(t.haystack.as_bytes(), &t.needles)
+ {
+ None => continue,
+ Some(results) => results,
+ };
+ results.reverse();
+ assert_eq!(
+ t.expected,
+ results,
+ "needles: {:?}, haystack: {:?}",
+ t.needles
+ .iter()
+ .map(|&b| b.to_char())
+ .collect::<Vec<char>>(),
+ t.haystack,
+ );
+ }
+ }
+ }
+
+ /// Run all tests as counting tests. This panics on the first failure.
+ ///
+ /// That is, this only checks that the number of matches is correct and
+ /// not whether the offsets of each match are.
+ pub(crate) fn count_iter<F>(self, mut test: F)
+ where
+ F: FnMut(&[u8], &[u8]) -> Option<usize> + 'static,
+ {
+ for seed in SEEDS.iter() {
+ if seed.needles.len() > self.needle_len {
+ continue;
+ }
+ for t in seed.generate() {
+ let got = match test(t.haystack.as_bytes(), &t.needles) {
+ None => continue,
+ Some(got) => got,
+ };
+ assert_eq!(
+ t.expected.len(),
+ got,
+ "needles: {:?}, haystack: {:?}",
+ t.needles
+ .iter()
+ .map(|&b| b.to_char())
+ .collect::<Vec<char>>(),
+ t.haystack,
+ );
+ }
+ }
+ }
+
+ /// Like `Runner::forward`, but for a function that returns only the next
+ /// match and not all matches.
+ ///
+ /// If the function returns `None`, then it is skipped.
+ pub(crate) fn forward_oneshot<F>(self, mut test: F)
+ where
+ F: FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
+ {
+ self.forward_iter(move |haystack, needles| {
+ let mut start = 0;
+ let mut results = vec![];
+ while let Some(i) = test(&haystack[start..], needles)? {
+ results.push(start + i);
+ start += i + 1;
+ }
+ Some(results)
+ })
+ }
+
+ /// Like `Runner::reverse`, but for a function that returns only the last
+ /// match and not all matches.
+ ///
+ /// If the function returns `None`, then it is skipped.
+ pub(crate) fn reverse_oneshot<F>(self, mut test: F)
+ where
+ F: FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
+ {
+ self.reverse_iter(move |haystack, needles| {
+ let mut end = haystack.len();
+ let mut results = vec![];
+ while let Some(i) = test(&haystack[..end], needles)? {
+ results.push(i);
+ end = i;
+ }
+ Some(results)
+ })
+ }
+}
+
+/// A single test for memr?chr{,2,3}.
+#[derive(Clone, Debug)]
+struct Test {
+ /// The string to search in.
+ haystack: String,
+ /// The needles to look for.
+ needles: Vec<u8>,
+ /// The offsets that are expected to be found for all needles in the
+ /// forward direction.
+ expected: Vec<usize>,
+}
+
+impl Test {
+ fn new(seed: &Seed) -> Test {
+ Test {
+ haystack: seed.haystack.to_string(),
+ needles: seed.needles.to_vec(),
+ expected: seed.positions.to_vec(),
+ }
+ }
+}
+
+/// Data that can be expanded into many memchr tests by padding out the corpus.
+#[derive(Clone, Debug)]
+struct Seed {
+ /// The thing to search. We use `&str` instead of `&[u8]` because they
+ /// are nicer to write in tests, and we don't miss much since memchr
+ /// doesn't care about UTF-8.
+ ///
+ /// Corpora cannot contain either '%' or '#'. We use these bytes when
+ /// expanding test cases into many test cases, and we assume they are not
+ /// used. If they are used, `memchr_tests` will panic.
+ haystack: &'static str,
+ /// The needles to search for. This is intended to be an alternation of
+ /// needles. The number of needles may cause this test to be skipped for
+ /// some memchr variants. For example, a test with 2 needles cannot be used
+ /// to test `memchr`, but can be used to test `memchr2` and `memchr3`.
+ /// However, a test with only 1 needle can be used to test all of `memchr`,
+ /// `memchr2` and `memchr3`. We achieve this by filling in the needles with
+ /// bytes that we never used in the corpus (such as '#').
+ needles: &'static [u8],
+ /// The positions expected to match for all of the needles.
+ positions: &'static [usize],
+}
+
+impl Seed {
+ /// Controls how much we expand the haystack on either side for each test.
+ /// We lower this on Miri because otherwise running the tests would take
+ /// forever.
+ const EXPAND_LEN: usize = {
+ #[cfg(not(miri))]
+ {
+ 515
+ }
+ #[cfg(miri)]
+ {
+ 6
+ }
+ };
+
+ /// Expand this test into many variations of the same test.
+ ///
+ /// In particular, this will generate more tests with larger corpus sizes.
+ /// The expected positions are updated to maintain the integrity of the
+ /// test.
+ ///
+ /// This is important in testing a memchr implementation, because there are
+ /// often different cases depending on the length of the corpus.
+ ///
+ /// Note that we extend the corpus by adding `%` bytes, which we
+ /// don't otherwise use as a needle.
+ fn generate(&self) -> impl Iterator<Item = Test> {
+ let mut more = vec![];
+
+ // Add bytes to the start of the corpus.
+ for i in 0..Seed::EXPAND_LEN {
+ let mut t = Test::new(self);
+ let mut new: String = core::iter::repeat('%').take(i).collect();
+ new.push_str(&t.haystack);
+ t.haystack = new;
+ t.expected = t.expected.into_iter().map(|p| p + i).collect();
+ more.push(t);
+ }
+ // Add bytes to the end of the corpus.
+ for i in 1..Seed::EXPAND_LEN {
+ let mut t = Test::new(self);
+ let padding: String = core::iter::repeat('%').take(i).collect();
+ t.haystack.push_str(&padding);
+ more.push(t);
+ }
+
+ more.into_iter()
+ }
+}
diff --git a/vendor/memchr/src/tests/memchr/naive.rs b/vendor/memchr/src/tests/memchr/naive.rs
new file mode 100644
index 0000000..6ebcdae
--- /dev/null
+++ b/vendor/memchr/src/tests/memchr/naive.rs
@@ -0,0 +1,33 @@
+pub(crate) fn memchr(n1: u8, haystack: &[u8]) -> Option<usize> {
+ haystack.iter().position(|&b| b == n1)
+}
+
+pub(crate) fn memchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
+ haystack.iter().position(|&b| b == n1 || b == n2)
+}
+
+pub(crate) fn memchr3(
+ n1: u8,
+ n2: u8,
+ n3: u8,
+ haystack: &[u8],
+) -> Option<usize> {
+ haystack.iter().position(|&b| b == n1 || b == n2 || b == n3)
+}
+
+pub(crate) fn memrchr(n1: u8, haystack: &[u8]) -> Option<usize> {
+ haystack.iter().rposition(|&b| b == n1)
+}
+
+pub(crate) fn memrchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
+ haystack.iter().rposition(|&b| b == n1 || b == n2)
+}
+
+pub(crate) fn memrchr3(
+ n1: u8,
+ n2: u8,
+ n3: u8,
+ haystack: &[u8],
+) -> Option<usize> {
+ haystack.iter().rposition(|&b| b == n1 || b == n2 || b == n3)
+}
diff --git a/vendor/memchr/src/tests/memchr/prop.rs b/vendor/memchr/src/tests/memchr/prop.rs
new file mode 100644
index 0000000..b988260
--- /dev/null
+++ b/vendor/memchr/src/tests/memchr/prop.rs
@@ -0,0 +1,321 @@
+#[cfg(miri)]
+#[macro_export]
+macro_rules! define_memchr_quickcheck {
+ ($($tt:tt)*) => {};
+}
+
+#[cfg(not(miri))]
+#[macro_export]
+macro_rules! define_memchr_quickcheck {
+ ($mod:ident) => {
+ define_memchr_quickcheck!($mod, new);
+ };
+ ($mod:ident, $cons:ident) => {
+ use alloc::vec::Vec;
+
+ use quickcheck::TestResult;
+
+ use crate::tests::memchr::{
+ naive,
+ prop::{double_ended_take, naive1_iter, naive2_iter, naive3_iter},
+ };
+
+ quickcheck::quickcheck! {
+ fn qc_memchr_matches_naive(n1: u8, corpus: Vec<u8>) -> TestResult {
+ let expected = naive::memchr(n1, &corpus);
+ let got = match $mod::One::$cons(n1) {
+ None => return TestResult::discard(),
+ Some(f) => f.find(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memrchr_matches_naive(n1: u8, corpus: Vec<u8>) -> TestResult {
+ let expected = naive::memrchr(n1, &corpus);
+ let got = match $mod::One::$cons(n1) {
+ None => return TestResult::discard(),
+ Some(f) => f.rfind(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memchr2_matches_naive(n1: u8, n2: u8, corpus: Vec<u8>) -> TestResult {
+ let expected = naive::memchr2(n1, n2, &corpus);
+ let got = match $mod::Two::$cons(n1, n2) {
+ None => return TestResult::discard(),
+ Some(f) => f.find(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memrchr2_matches_naive(n1: u8, n2: u8, corpus: Vec<u8>) -> TestResult {
+ let expected = naive::memrchr2(n1, n2, &corpus);
+ let got = match $mod::Two::$cons(n1, n2) {
+ None => return TestResult::discard(),
+ Some(f) => f.rfind(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memchr3_matches_naive(
+ n1: u8, n2: u8, n3: u8,
+ corpus: Vec<u8>
+ ) -> TestResult {
+ let expected = naive::memchr3(n1, n2, n3, &corpus);
+ let got = match $mod::Three::$cons(n1, n2, n3) {
+ None => return TestResult::discard(),
+ Some(f) => f.find(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memrchr3_matches_naive(
+ n1: u8, n2: u8, n3: u8,
+ corpus: Vec<u8>
+ ) -> TestResult {
+ let expected = naive::memrchr3(n1, n2, n3, &corpus);
+ let got = match $mod::Three::$cons(n1, n2, n3) {
+ None => return TestResult::discard(),
+ Some(f) => f.rfind(&corpus),
+ };
+ TestResult::from_bool(expected == got)
+ }
+
+ fn qc_memchr_double_ended_iter(
+ needle: u8, data: Vec<u8>, take_side: Vec<bool>
+ ) -> TestResult {
+ // make nonempty
+ let mut take_side = take_side;
+ if take_side.is_empty() { take_side.push(true) };
+
+ let finder = match $mod::One::$cons(needle) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let iter = finder.iter(&data);
+ let got = double_ended_take(
+ iter,
+ take_side.iter().cycle().cloned(),
+ );
+ let expected = naive1_iter(needle, &data);
+
+ TestResult::from_bool(got.iter().cloned().eq(expected))
+ }
+
+ fn qc_memchr2_double_ended_iter(
+ needle1: u8, needle2: u8, data: Vec<u8>, take_side: Vec<bool>
+ ) -> TestResult {
+ // make nonempty
+ let mut take_side = take_side;
+ if take_side.is_empty() { take_side.push(true) };
+
+ let finder = match $mod::Two::$cons(needle1, needle2) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let iter = finder.iter(&data);
+ let got = double_ended_take(
+ iter,
+ take_side.iter().cycle().cloned(),
+ );
+ let expected = naive2_iter(needle1, needle2, &data);
+
+ TestResult::from_bool(got.iter().cloned().eq(expected))
+ }
+
+ fn qc_memchr3_double_ended_iter(
+ needle1: u8, needle2: u8, needle3: u8,
+ data: Vec<u8>, take_side: Vec<bool>
+ ) -> TestResult {
+ // make nonempty
+ let mut take_side = take_side;
+ if take_side.is_empty() { take_side.push(true) };
+
+ let finder = match $mod::Three::$cons(needle1, needle2, needle3) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let iter = finder.iter(&data);
+ let got = double_ended_take(
+ iter,
+ take_side.iter().cycle().cloned(),
+ );
+ let expected = naive3_iter(needle1, needle2, needle3, &data);
+
+ TestResult::from_bool(got.iter().cloned().eq(expected))
+ }
+
+ fn qc_memchr1_iter(data: Vec<u8>) -> TestResult {
+ let needle = 0;
+ let finder = match $mod::One::$cons(needle) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data);
+ let expected = naive1_iter(needle, &data);
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr1_rev_iter(data: Vec<u8>) -> TestResult {
+ let needle = 0;
+
+ let finder = match $mod::One::$cons(needle) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data).rev();
+ let expected = naive1_iter(needle, &data).rev();
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr2_iter(data: Vec<u8>) -> TestResult {
+ let needle1 = 0;
+ let needle2 = 1;
+
+ let finder = match $mod::Two::$cons(needle1, needle2) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data);
+ let expected = naive2_iter(needle1, needle2, &data);
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr2_rev_iter(data: Vec<u8>) -> TestResult {
+ let needle1 = 0;
+ let needle2 = 1;
+
+ let finder = match $mod::Two::$cons(needle1, needle2) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data).rev();
+ let expected = naive2_iter(needle1, needle2, &data).rev();
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr3_iter(data: Vec<u8>) -> TestResult {
+ let needle1 = 0;
+ let needle2 = 1;
+ let needle3 = 2;
+
+ let finder = match $mod::Three::$cons(needle1, needle2, needle3) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data);
+ let expected = naive3_iter(needle1, needle2, needle3, &data);
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr3_rev_iter(data: Vec<u8>) -> TestResult {
+ let needle1 = 0;
+ let needle2 = 1;
+ let needle3 = 2;
+
+ let finder = match $mod::Three::$cons(needle1, needle2, needle3) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let got = finder.iter(&data).rev();
+ let expected = naive3_iter(needle1, needle2, needle3, &data).rev();
+ TestResult::from_bool(got.eq(expected))
+ }
+
+ fn qc_memchr1_iter_size_hint(data: Vec<u8>) -> TestResult {
+ // test that the size hint is within reasonable bounds
+ let needle = 0;
+ let finder = match $mod::One::$cons(needle) {
+ None => return TestResult::discard(),
+ Some(finder) => finder,
+ };
+ let mut iter = finder.iter(&data);
+ let mut real_count = data
+ .iter()
+ .filter(|&&elt| elt == needle)
+ .count();
+
+ while let Some(index) = iter.next() {
+ real_count -= 1;
+ let (lower, upper) = iter.size_hint();
+ assert!(lower <= real_count);
+ assert!(upper.unwrap() >= real_count);
+ assert!(upper.unwrap() <= data.len() - index);
+ }
+ TestResult::passed()
+ }
+ }
+ };
+}
+
+// take items from a DEI, taking front for each true and back for each false.
+// Return a vector with the concatenation of the fronts and the reverse of the
+// backs.
+#[cfg(not(miri))]
+pub(crate) fn double_ended_take<I, J>(
+ mut iter: I,
+ take_side: J,
+) -> alloc::vec::Vec<I::Item>
+where
+ I: DoubleEndedIterator,
+ J: Iterator<Item = bool>,
+{
+ let mut found_front = alloc::vec![];
+ let mut found_back = alloc::vec![];
+
+ for take_front in take_side {
+ if take_front {
+ if let Some(pos) = iter.next() {
+ found_front.push(pos);
+ } else {
+ break;
+ }
+ } else {
+ if let Some(pos) = iter.next_back() {
+ found_back.push(pos);
+ } else {
+ break;
+ }
+ };
+ }
+
+ let mut all_found = found_front;
+ all_found.extend(found_back.into_iter().rev());
+ all_found
+}
+
+// return an iterator of the 0-based indices of haystack that match the needle
+#[cfg(not(miri))]
+pub(crate) fn naive1_iter<'a>(
+ n1: u8,
+ haystack: &'a [u8],
+) -> impl DoubleEndedIterator<Item = usize> + 'a {
+ haystack.iter().enumerate().filter(move |&(_, &b)| b == n1).map(|t| t.0)
+}
+
+#[cfg(not(miri))]
+pub(crate) fn naive2_iter<'a>(
+ n1: u8,
+ n2: u8,
+ haystack: &'a [u8],
+) -> impl DoubleEndedIterator<Item = usize> + 'a {
+ haystack
+ .iter()
+ .enumerate()
+ .filter(move |&(_, &b)| b == n1 || b == n2)
+ .map(|t| t.0)
+}
+
+#[cfg(not(miri))]
+pub(crate) fn naive3_iter<'a>(
+ n1: u8,
+ n2: u8,
+ n3: u8,
+ haystack: &'a [u8],
+) -> impl DoubleEndedIterator<Item = usize> + 'a {
+ haystack
+ .iter()
+ .enumerate()
+ .filter(move |&(_, &b)| b == n1 || b == n2 || b == n3)
+ .map(|t| t.0)
+}
diff --git a/vendor/memchr/src/tests/mod.rs b/vendor/memchr/src/tests/mod.rs
new file mode 100644
index 0000000..259b678
--- /dev/null
+++ b/vendor/memchr/src/tests/mod.rs
@@ -0,0 +1,15 @@
+#[macro_use]
+pub(crate) mod memchr;
+pub(crate) mod packedpair;
+#[macro_use]
+pub(crate) mod substring;
+
+// For debugging, particularly in CI, print out the byte order of the current
+// target.
+#[test]
+fn byte_order() {
+ #[cfg(target_endian = "little")]
+ std::eprintln!("LITTLE ENDIAN");
+ #[cfg(target_endian = "big")]
+ std::eprintln!("BIG ENDIAN");
+}
diff --git a/vendor/memchr/src/tests/packedpair.rs b/vendor/memchr/src/tests/packedpair.rs
new file mode 100644
index 0000000..204635b
--- /dev/null
+++ b/vendor/memchr/src/tests/packedpair.rs
@@ -0,0 +1,216 @@
+use alloc::{boxed::Box, vec, vec::Vec};
+
+/// A set of "packed pair" test seeds. Each seed serves as the base for the
+/// generation of many other tests. In essence, the seed captures the pair of
+/// bytes we used for a predicate and first byte among our needle. The tests
+/// generated from each seed essentially vary the length of the needle and
+/// haystack, while using the rare/first byte configuration from the seed.
+///
+/// The purpose of this is to test many different needle/haystack lengths.
+/// In particular, some of the vector optimizations might only have bugs
+/// in haystacks of a certain size.
+const SEEDS: &[Seed] = &[
+ // Why not use different 'first' bytes? It seemed like a good idea to be
+ // able to configure it, but when I wrote the test generator below, it
+ // didn't seem necessary to use for reasons that I forget.
+ Seed { first: b'x', index1: b'y', index2: b'z' },
+ Seed { first: b'x', index1: b'x', index2: b'z' },
+ Seed { first: b'x', index1: b'y', index2: b'x' },
+ Seed { first: b'x', index1: b'x', index2: b'x' },
+ Seed { first: b'x', index1: b'y', index2: b'y' },
+];
+
+/// Runs a host of "packed pair" search tests.
+///
+/// These tests specifically look for the occurrence of a possible substring
+/// match based on a pair of bytes matching at the right offsets.
+pub(crate) struct Runner {
+ fwd: Option<
+ Box<
+ dyn FnMut(&[u8], &[u8], u8, u8) -> Option<Option<usize>> + 'static,
+ >,
+ >,
+}
+
+impl Runner {
+ /// Create a new test runner for "packed pair" substring search.
+ pub(crate) fn new() -> Runner {
+ Runner { fwd: None }
+ }
+
+ /// Run all tests. This panics on the first failure.
+ ///
+ /// If the implementation being tested returns `None` for a particular
+ /// haystack/needle combination, then that test is skipped.
+ ///
+ /// This runs tests on both the forward and reverse implementations given.
+ /// If either (or both) are missing, then tests for that implementation are
+ /// skipped.
+ pub(crate) fn run(self) {
+ if let Some(mut fwd) = self.fwd {
+ for seed in SEEDS.iter() {
+ for t in seed.generate() {
+ match fwd(&t.haystack, &t.needle, t.index1, t.index2) {
+ None => continue,
+ Some(result) => {
+ assert_eq!(
+ t.fwd, result,
+ "FORWARD, needle: {:?}, haystack: {:?}, \
+ index1: {:?}, index2: {:?}",
+ t.needle, t.haystack, t.index1, t.index2,
+ )
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /// Set the implementation for forward "packed pair" substring search.
+ ///
+ /// If the closure returns `None`, then it is assumed that the given
+ /// test cannot be applied to the particular implementation and it is
+ /// skipped. For example, if a particular implementation only supports
+ /// needles or haystacks for some minimum length.
+ ///
+ /// If this is not set, then forward "packed pair" search is not tested.
+ pub(crate) fn fwd(
+ mut self,
+ search: impl FnMut(&[u8], &[u8], u8, u8) -> Option<Option<usize>> + 'static,
+ ) -> Runner {
+ self.fwd = Some(Box::new(search));
+ self
+ }
+}
+
+/// A test that represents the input and expected output to a "packed pair"
+/// search function. The test should be able to run with any "packed pair"
+/// implementation and get the expected output.
+struct Test {
+ haystack: Vec<u8>,
+ needle: Vec<u8>,
+ index1: u8,
+ index2: u8,
+ fwd: Option<usize>,
+}
+
+impl Test {
+ /// Create a new "packed pair" test from a seed and some given offsets to
+ /// the pair of bytes to use as a predicate in the seed's needle.
+ ///
+ /// If a valid test could not be constructed, then None is returned.
+ /// (Currently, we take the approach of massaging tests to be valid
+ /// instead of rejecting them outright.)
+ fn new(
+ seed: Seed,
+ index1: usize,
+ index2: usize,
+ haystack_len: usize,
+ needle_len: usize,
+ fwd: Option<usize>,
+ ) -> Option<Test> {
+ let mut index1: u8 = index1.try_into().unwrap();
+ let mut index2: u8 = index2.try_into().unwrap();
+ // The '#' byte is never used in a haystack (unless we're expecting
+ // a match), while the '@' byte is never used in a needle.
+ let mut haystack = vec![b'@'; haystack_len];
+ let mut needle = vec![b'#'; needle_len];
+ needle[0] = seed.first;
+ needle[index1 as usize] = seed.index1;
+ needle[index2 as usize] = seed.index2;
+ // If we're expecting a match, then make sure the needle occurs
+ // in the haystack at the expected position.
+ if let Some(i) = fwd {
+ haystack[i..i + needle.len()].copy_from_slice(&needle);
+ }
+ // If the operations above lead to rare offsets pointing to the
+ // non-first occurrence of a byte, then adjust it. This might lead
+ // to redundant tests, but it's simpler than trying to change the
+ // generation process I think.
+ if let Some(i) = crate::memchr(seed.index1, &needle) {
+ index1 = u8::try_from(i).unwrap();
+ }
+ if let Some(i) = crate::memchr(seed.index2, &needle) {
+ index2 = u8::try_from(i).unwrap();
+ }
+ Some(Test { haystack, needle, index1, index2, fwd })
+ }
+}
+
+/// Data that describes a single prefilter test seed.
+#[derive(Clone, Copy)]
+struct Seed {
+ first: u8,
+ index1: u8,
+ index2: u8,
+}
+
+impl Seed {
+ const NEEDLE_LENGTH_LIMIT: usize = {
+ #[cfg(not(miri))]
+ {
+ 33
+ }
+ #[cfg(miri)]
+ {
+ 5
+ }
+ };
+
+ const HAYSTACK_LENGTH_LIMIT: usize = {
+ #[cfg(not(miri))]
+ {
+ 65
+ }
+ #[cfg(miri)]
+ {
+ 8
+ }
+ };
+
+ /// Generate a series of prefilter tests from this seed.
+ fn generate(self) -> impl Iterator<Item = Test> {
+ let len_start = 2;
+ // The iterator below generates *a lot* of tests. The number of
+ // tests was chosen somewhat empirically to be "bearable" when
+ // running the test suite.
+ //
+ // We use an iterator here because the collective haystacks of all
+ // these test cases add up to enough memory to OOM a conservative
+ // sandbox or a small laptop.
+ (len_start..=Seed::NEEDLE_LENGTH_LIMIT).flat_map(move |needle_len| {
+ let index_start = len_start - 1;
+ (index_start..needle_len).flat_map(move |index1| {
+ (index1..needle_len).flat_map(move |index2| {
+ (needle_len..=Seed::HAYSTACK_LENGTH_LIMIT).flat_map(
+ move |haystack_len| {
+ Test::new(
+ self,
+ index1,
+ index2,
+ haystack_len,
+ needle_len,
+ None,
+ )
+ .into_iter()
+ .chain(
+ (0..=(haystack_len - needle_len)).flat_map(
+ move |output| {
+ Test::new(
+ self,
+ index1,
+ index2,
+ haystack_len,
+ needle_len,
+ Some(output),
+ )
+ },
+ ),
+ )
+ },
+ )
+ })
+ })
+ })
+ }
+}
diff --git a/vendor/memchr/src/tests/substring/mod.rs b/vendor/memchr/src/tests/substring/mod.rs
new file mode 100644
index 0000000..dd10cbd
--- /dev/null
+++ b/vendor/memchr/src/tests/substring/mod.rs
@@ -0,0 +1,232 @@
+/*!
+This module defines tests and test helpers for substring implementations.
+*/
+
+use alloc::{
+ boxed::Box,
+ format,
+ string::{String, ToString},
+};
+
+pub(crate) mod naive;
+#[macro_use]
+pub(crate) mod prop;
+
+const SEEDS: &'static [Seed] = &[
+ Seed::new("", "", Some(0), Some(0)),
+ Seed::new("", "a", Some(0), Some(1)),
+ Seed::new("", "ab", Some(0), Some(2)),
+ Seed::new("", "abc", Some(0), Some(3)),
+ Seed::new("a", "", None, None),
+ Seed::new("a", "a", Some(0), Some(0)),
+ Seed::new("a", "aa", Some(0), Some(1)),
+ Seed::new("a", "ba", Some(1), Some(1)),
+ Seed::new("a", "bba", Some(2), Some(2)),
+ Seed::new("a", "bbba", Some(3), Some(3)),
+ Seed::new("a", "bbbab", Some(3), Some(3)),
+ Seed::new("a", "bbbabb", Some(3), Some(3)),
+ Seed::new("a", "bbbabbb", Some(3), Some(3)),
+ Seed::new("a", "bbbbbb", None, None),
+ Seed::new("ab", "", None, None),
+ Seed::new("ab", "a", None, None),
+ Seed::new("ab", "b", None, None),
+ Seed::new("ab", "ab", Some(0), Some(0)),
+ Seed::new("ab", "aab", Some(1), Some(1)),
+ Seed::new("ab", "aaab", Some(2), Some(2)),
+ Seed::new("ab", "abaab", Some(0), Some(3)),
+ Seed::new("ab", "baaab", Some(3), Some(3)),
+ Seed::new("ab", "acb", None, None),
+ Seed::new("ab", "abba", Some(0), Some(0)),
+ Seed::new("abc", "ab", None, None),
+ Seed::new("abc", "abc", Some(0), Some(0)),
+ Seed::new("abc", "abcz", Some(0), Some(0)),
+ Seed::new("abc", "abczz", Some(0), Some(0)),
+ Seed::new("abc", "zabc", Some(1), Some(1)),
+ Seed::new("abc", "zzabc", Some(2), Some(2)),
+ Seed::new("abc", "azbc", None, None),
+ Seed::new("abc", "abzc", None, None),
+ Seed::new("abczdef", "abczdefzzzzzzzzzzzzzzzzzzzz", Some(0), Some(0)),
+ Seed::new("abczdef", "zzzzzzzzzzzzzzzzzzzzabczdef", Some(20), Some(20)),
+ Seed::new(
+ "xyz",
+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaxyz",
+ Some(32),
+ Some(32),
+ ),
+ Seed::new("\u{0}\u{15}", "\u{0}\u{15}\u{15}\u{0}", Some(0), Some(0)),
+ Seed::new("\u{0}\u{1e}", "\u{1e}\u{0}", None, None),
+];
+
+/// Runs a host of substring search tests.
+///
+/// This has support for "partial" substring search implementations only work
+/// for a subset of needles/haystacks. For example, the "packed pair" substring
+/// search implementation only works for haystacks of some minimum length based
+/// of the pair of bytes selected and the size of the vector used.
+pub(crate) struct Runner {
+ fwd: Option<
+ Box<dyn FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static>,
+ >,
+ rev: Option<
+ Box<dyn FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static>,
+ >,
+}
+
+impl Runner {
+ /// Create a new test runner for forward and reverse substring search
+ /// implementations.
+ pub(crate) fn new() -> Runner {
+ Runner { fwd: None, rev: None }
+ }
+
+ /// Run all tests. This panics on the first failure.
+ ///
+ /// If the implementation being tested returns `None` for a particular
+ /// haystack/needle combination, then that test is skipped.
+ ///
+ /// This runs tests on both the forward and reverse implementations given.
+ /// If either (or both) are missing, then tests for that implementation are
+ /// skipped.
+ pub(crate) fn run(self) {
+ if let Some(mut fwd) = self.fwd {
+ for seed in SEEDS.iter() {
+ for t in seed.generate() {
+ match fwd(t.haystack.as_bytes(), t.needle.as_bytes()) {
+ None => continue,
+ Some(result) => {
+ assert_eq!(
+ t.fwd, result,
+ "FORWARD, needle: {:?}, haystack: {:?}",
+ t.needle, t.haystack,
+ );
+ }
+ }
+ }
+ }
+ }
+ if let Some(mut rev) = self.rev {
+ for seed in SEEDS.iter() {
+ for t in seed.generate() {
+ match rev(t.haystack.as_bytes(), t.needle.as_bytes()) {
+ None => continue,
+ Some(result) => {
+ assert_eq!(
+ t.rev, result,
+ "REVERSE, needle: {:?}, haystack: {:?}",
+ t.needle, t.haystack,
+ );
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /// Set the implementation for forward substring search.
+ ///
+ /// If the closure returns `None`, then it is assumed that the given
+ /// test cannot be applied to the particular implementation and it is
+ /// skipped. For example, if a particular implementation only supports
+ /// needles or haystacks for some minimum length.
+ ///
+ /// If this is not set, then forward substring search is not tested.
+ pub(crate) fn fwd(
+ mut self,
+ search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
+ ) -> Runner {
+ self.fwd = Some(Box::new(search));
+ self
+ }
+
+ /// Set the implementation for reverse substring search.
+ ///
+ /// If the closure returns `None`, then it is assumed that the given
+ /// test cannot be applied to the particular implementation and it is
+ /// skipped. For example, if a particular implementation only supports
+ /// needles or haystacks for some minimum length.
+ ///
+ /// If this is not set, then reverse substring search is not tested.
+ pub(crate) fn rev(
+ mut self,
+ search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>> + 'static,
+ ) -> Runner {
+ self.rev = Some(Box::new(search));
+ self
+ }
+}
+
+/// A single substring test for forward and reverse searches.
+#[derive(Clone, Debug)]
+struct Test {
+ needle: String,
+ haystack: String,
+ fwd: Option<usize>,
+ rev: Option<usize>,
+}
+
+/// A single substring test for forward and reverse searches.
+///
+/// Each seed is valid on its own, but it also serves as a starting point
+/// to generate more tests. Namely, we pad out the haystacks with other
+/// characters so that we get more complete coverage. This is especially useful
+/// for testing vector algorithms that tend to have weird special cases for
+/// alignment and loop unrolling.
+///
+/// Padding works by assuming certain characters never otherwise appear in a
+/// needle or a haystack. Neither should contain a `#` character.
+#[derive(Clone, Copy, Debug)]
+struct Seed {
+ needle: &'static str,
+ haystack: &'static str,
+ fwd: Option<usize>,
+ rev: Option<usize>,
+}
+
+impl Seed {
+ const MAX_PAD: usize = 34;
+
+ const fn new(
+ needle: &'static str,
+ haystack: &'static str,
+ fwd: Option<usize>,
+ rev: Option<usize>,
+ ) -> Seed {
+ Seed { needle, haystack, fwd, rev }
+ }
+
+ fn generate(self) -> impl Iterator<Item = Test> {
+ assert!(!self.needle.contains('#'), "needle must not contain '#'");
+ assert!(!self.haystack.contains('#'), "haystack must not contain '#'");
+ (0..=Seed::MAX_PAD)
+ // Generate tests for padding at the beginning of haystack.
+ .map(move |pad| {
+ let needle = self.needle.to_string();
+ let prefix = "#".repeat(pad);
+ let haystack = format!("{}{}", prefix, self.haystack);
+ let fwd = if needle.is_empty() {
+ Some(0)
+ } else {
+ self.fwd.map(|i| pad + i)
+ };
+ let rev = if needle.is_empty() {
+ Some(haystack.len())
+ } else {
+ self.rev.map(|i| pad + i)
+ };
+ Test { needle, haystack, fwd, rev }
+ })
+ // Generate tests for padding at the end of haystack.
+ .chain((1..=Seed::MAX_PAD).map(move |pad| {
+ let needle = self.needle.to_string();
+ let suffix = "#".repeat(pad);
+ let haystack = format!("{}{}", self.haystack, suffix);
+ let fwd = if needle.is_empty() { Some(0) } else { self.fwd };
+ let rev = if needle.is_empty() {
+ Some(haystack.len())
+ } else {
+ self.rev
+ };
+ Test { needle, haystack, fwd, rev }
+ }))
+ }
+}
diff --git a/vendor/memchr/src/tests/substring/naive.rs b/vendor/memchr/src/tests/substring/naive.rs
new file mode 100644
index 0000000..1bc6009
--- /dev/null
+++ b/vendor/memchr/src/tests/substring/naive.rs
@@ -0,0 +1,45 @@
+/*!
+This module defines "naive" implementations of substring search.
+
+These are sometimes useful to compare with "real" substring implementations.
+The idea is that they are so simple that they are unlikely to be incorrect.
+*/
+
+/// Naively search forwards for the given needle in the given haystack.
+pub(crate) fn find(haystack: &[u8], needle: &[u8]) -> Option<usize> {
+ let end = haystack.len().checked_sub(needle.len()).map_or(0, |i| i + 1);
+ for i in 0..end {
+ if needle == &haystack[i..i + needle.len()] {
+ return Some(i);
+ }
+ }
+ None
+}
+
+/// Naively search in reverse for the given needle in the given haystack.
+pub(crate) fn rfind(haystack: &[u8], needle: &[u8]) -> Option<usize> {
+ let end = haystack.len().checked_sub(needle.len()).map_or(0, |i| i + 1);
+ for i in (0..end).rev() {
+ if needle == &haystack[i..i + needle.len()] {
+ return Some(i);
+ }
+ }
+ None
+}
+
+#[cfg(test)]
+mod tests {
+ use crate::tests::substring;
+
+ use super::*;
+
+ #[test]
+ fn forward() {
+ substring::Runner::new().fwd(|h, n| Some(find(h, n))).run()
+ }
+
+ #[test]
+ fn reverse() {
+ substring::Runner::new().rev(|h, n| Some(rfind(h, n))).run()
+ }
+}
diff --git a/vendor/memchr/src/tests/substring/prop.rs b/vendor/memchr/src/tests/substring/prop.rs
new file mode 100644
index 0000000..a8352ec
--- /dev/null
+++ b/vendor/memchr/src/tests/substring/prop.rs
@@ -0,0 +1,126 @@
+/*!
+This module defines a few quickcheck properties for substring search.
+
+It also provides a forward and reverse macro for conveniently defining
+quickcheck tests that run these properties over any substring search
+implementation.
+*/
+
+use crate::tests::substring::naive;
+
+/// $fwd is a `impl FnMut(haystack, needle) -> Option<Option<usize>>`. When the
+/// routine returns `None`, then it's skipped, which is useful for substring
+/// implementations that don't work for all inputs.
+#[macro_export]
+macro_rules! define_substring_forward_quickcheck {
+ ($fwd:expr) => {
+ #[cfg(not(miri))]
+ quickcheck::quickcheck! {
+ fn qc_fwd_prefix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
+ crate::tests::substring::prop::prefix_is_substring(&bs, $fwd)
+ }
+
+ fn qc_fwd_suffix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
+ crate::tests::substring::prop::suffix_is_substring(&bs, $fwd)
+ }
+
+ fn qc_fwd_matches_naive(
+ haystack: alloc::vec::Vec<u8>,
+ needle: alloc::vec::Vec<u8>
+ ) -> bool {
+ crate::tests::substring::prop::same_as_naive(
+ false,
+ &haystack,
+ &needle,
+ $fwd,
+ )
+ }
+ }
+ };
+}
+
+/// $rev is a `impl FnMut(haystack, needle) -> Option<Option<usize>>`. When the
+/// routine returns `None`, then it's skipped, which is useful for substring
+/// implementations that don't work for all inputs.
+#[macro_export]
+macro_rules! define_substring_reverse_quickcheck {
+ ($rev:expr) => {
+ #[cfg(not(miri))]
+ quickcheck::quickcheck! {
+ fn qc_rev_prefix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
+ crate::tests::substring::prop::prefix_is_substring(&bs, $rev)
+ }
+
+ fn qc_rev_suffix_is_substring(bs: alloc::vec::Vec<u8>) -> bool {
+ crate::tests::substring::prop::suffix_is_substring(&bs, $rev)
+ }
+
+ fn qc_rev_matches_naive(
+ haystack: alloc::vec::Vec<u8>,
+ needle: alloc::vec::Vec<u8>
+ ) -> bool {
+ crate::tests::substring::prop::same_as_naive(
+ true,
+ &haystack,
+ &needle,
+ $rev,
+ )
+ }
+ }
+ };
+}
+
+/// Check that every prefix of the given byte string is a substring.
+pub(crate) fn prefix_is_substring(
+ bs: &[u8],
+ mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
+) -> bool {
+ for i in 0..bs.len().saturating_sub(1) {
+ let prefix = &bs[..i];
+ let result = match search(bs, prefix) {
+ None => continue,
+ Some(result) => result,
+ };
+ if !result.is_some() {
+ return false;
+ }
+ }
+ true
+}
+
+/// Check that every suffix of the given byte string is a substring.
+pub(crate) fn suffix_is_substring(
+ bs: &[u8],
+ mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
+) -> bool {
+ for i in 0..bs.len().saturating_sub(1) {
+ let suffix = &bs[i..];
+ let result = match search(bs, suffix) {
+ None => continue,
+ Some(result) => result,
+ };
+ if !result.is_some() {
+ return false;
+ }
+ }
+ true
+}
+
+/// Check that naive substring search matches the result of the given search
+/// algorithm.
+pub(crate) fn same_as_naive(
+ reverse: bool,
+ haystack: &[u8],
+ needle: &[u8],
+ mut search: impl FnMut(&[u8], &[u8]) -> Option<Option<usize>>,
+) -> bool {
+ let result = match search(haystack, needle) {
+ None => return true,
+ Some(result) => result,
+ };
+ if reverse {
+ result == naive::rfind(haystack, needle)
+ } else {
+ result == naive::find(haystack, needle)
+ }
+}
diff --git a/vendor/memchr/src/tests/x86_64-soft_float.json b/vendor/memchr/src/tests/x86_64-soft_float.json
new file mode 100644
index 0000000..b77649e
--- /dev/null
+++ b/vendor/memchr/src/tests/x86_64-soft_float.json
@@ -0,0 +1,15 @@
+{
+ "llvm-target": "x86_64-unknown-none",
+ "target-endian": "little",
+ "target-pointer-width": "64",
+ "target-c-int-width": "32",
+ "os": "none",
+ "arch": "x86_64",
+ "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
+ "linker-flavor": "ld.lld",
+ "linker": "rust-lld",
+ "features": "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float",
+ "executables": true,
+ "disable-redzone": true,
+ "panic-strategy": "abort"
+}
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