1 files changed, 216 insertions, 0 deletions
diff --git a/third_party/rust/nom/tests/issues.rs b/third_party/rust/nom/tests/issues.rs
new file mode 100644
index 0000000000..f7e2799171
--- /dev/null
+++ b/third_party/rust/nom/tests/issues.rs
@@ -0,0 +1,216 @@
+//#![feature(trace_macros)]
+#![allow(dead_code)]
+#![cfg_attr(feature = "cargo-clippy", allow(redundant_closure))]
+
+use nom::{error::ErrorKind, Err, IResult, Needed};
+
+#[allow(dead_code)]
+struct Range {
+  start: char,
+  end: char,
+}
+
+pub fn take_char(input: &[u8]) -> IResult<&[u8], char> {
+  if !input.is_empty() {
+    Ok((&input[1..], input[0] as char))
+  } else {
+    Err(Err::Incomplete(Needed::new(1)))
+  }
+}
+
+#[cfg(feature = "std")]
+mod parse_int {
+  use nom::HexDisplay;
+  use nom::{
+    character::streaming::{digit1 as digit, space1 as space},
+    combinator::{complete, map, opt},
+    multi::many0,
+    IResult,
+  };
+  use std::str;
+
+  fn parse_ints(input: &[u8]) -> IResult<&[u8], Vec<i32>> {
+    many0(spaces_or_int)(input)
+  }
+
+  fn spaces_or_int(input: &[u8]) -> IResult<&[u8], i32> {
+    println!("{}", input.to_hex(8));
+    let (i, _) = opt(complete(space))(input)?;
+    let (i, res) = map(complete(digit), |x| {
+      println!("x: {:?}", x);
+      let result = str::from_utf8(x).unwrap();
+      println!("Result: {}", result);
+      println!("int is empty?: {}", x.is_empty());
+      match result.parse() {
+        Ok(i) => i,
+        Err(e) => panic!("UH OH! NOT A DIGIT! {:?}", e),
+      }
+    })(i)?;
+
+    Ok((i, res))
+  }
+
+  #[test]
+  fn issue_142() {
+    let subject = parse_ints(&b"12 34 5689a"[..]);
+    let expected = Ok((&b"a"[..], vec![12, 34, 5689]));
+    assert_eq!(subject, expected);
+
+    let subject = parse_ints(&b"12 34 5689 "[..]);
+    let expected = Ok((&b" "[..], vec![12, 34, 5689]));
+    assert_eq!(subject, expected)
+  }
+}
+
+#[test]
+fn usize_length_bytes_issue() {
+  use nom::multi::length_data;
+  use nom::number::streaming::be_u16;
+  let _: IResult<&[u8], &[u8], (&[u8], ErrorKind)> = length_data(be_u16)(b"012346");
+}
+
+#[test]
+fn take_till_issue() {
+  use nom::bytes::streaming::take_till;
+
+  fn nothing(i: &[u8]) -> IResult<&[u8], &[u8]> {
+    take_till(|_| true)(i)
+  }
+
+  assert_eq!(nothing(b""), Err(Err::Incomplete(Needed::new(1))));
+  assert_eq!(nothing(b"abc"), Ok((&b"abc"[..], &b""[..])));
+}
+
+#[test]
+fn issue_655() {
+  use nom::character::streaming::{line_ending, not_line_ending};
+  fn twolines(i: &str) -> IResult<&str, (&str, &str)> {
+    let (i, l1) = not_line_ending(i)?;
+    let (i, _) = line_ending(i)?;
+    let (i, l2) = not_line_ending(i)?;
+    let (i, _) = line_ending(i)?;
+
+    Ok((i, (l1, l2)))
+  }
+
+  assert_eq!(twolines("foo\nbar\n"), Ok(("", ("foo", "bar"))));
+  assert_eq!(twolines("féo\nbar\n"), Ok(("", ("féo", "bar"))));
+  assert_eq!(twolines("foé\nbar\n"), Ok(("", ("foé", "bar"))));
+  assert_eq!(twolines("foé\r\nbar\n"), Ok(("", ("foé", "bar"))));
+}
+
+#[cfg(feature = "alloc")]
+fn issue_717(i: &[u8]) -> IResult<&[u8], Vec<&[u8]>> {
+  use nom::bytes::complete::{is_not, tag};
+  use nom::multi::separated_list0;
+
+  separated_list0(tag([0x0]), is_not([0x0u8]))(i)
+}
+
+mod issue_647 {
+  use nom::bytes::streaming::tag;
+  use nom::combinator::complete;
+  use nom::multi::separated_list0;
+  use nom::{error::Error, number::streaming::be_f64, Err, IResult};
+  pub type Input<'a> = &'a [u8];
+
+  #[derive(PartialEq, Debug, Clone)]
+  struct Data {
+    c: f64,
+    v: Vec<f64>,
+  }
+
+  fn list<'a, 'b>(
+    input: Input<'a>,
+    _cs: &'b f64,
+  ) -> Result<(Input<'a>, Vec<f64>), Err<Error<&'a [u8]>>> {
+    separated_list0(complete(tag(",")), complete(be_f64))(input)
+  }
+
+  fn data(input: Input<'_>) -> IResult<Input<'_>, Data> {
+    let (i, c) = be_f64(input)?;
+    let (i, _) = tag("\n")(i)?;
+    let (i, v) = list(i, &c)?;
+    Ok((i, Data { c, v }))
+  }
+}
+
+#[test]
+fn issue_848_overflow_incomplete_bits_to_bytes() {
+  fn take(i: &[u8]) -> IResult<&[u8], &[u8]> {
+    use nom::bytes::streaming::take;
+    take(0x2000000000000000_usize)(i)
+  }
+  fn parser(i: &[u8]) -> IResult<&[u8], &[u8]> {
+    use nom::bits::{bits, bytes};
+
+    bits(bytes(take))(i)
+  }
+  assert_eq!(
+    parser(&b""[..]),
+    Err(Err::Failure(nom::error_position!(
+      &b""[..],
+      ErrorKind::TooLarge
+    )))
+  );
+}
+
+#[test]
+fn issue_942() {
+  use nom::error::{ContextError, ParseError};
+  pub fn parser<'a, E: ParseError<&'a str> + ContextError<&'a str>>(
+    i: &'a str,
+  ) -> IResult<&'a str, usize, E> {
+    use nom::{character::complete::char, error::context, multi::many0_count};
+    many0_count(context("char_a", char('a')))(i)
+  }
+  assert_eq!(parser::<()>("aaa"), Ok(("", 3)));
+}
+
+#[test]
+fn issue_many_m_n_with_zeros() {
+  use nom::character::complete::char;
+  use nom::multi::many_m_n;
+  let mut parser = many_m_n::<_, _, (), _>(0, 0, char('a'));
+  assert_eq!(parser("aaa"), Ok(("aaa", vec![])));
+}
+
+#[test]
+fn issue_1027_convert_error_panic_nonempty() {
+  use nom::character::complete::char;
+  use nom::error::{convert_error, VerboseError};
+  use nom::sequence::pair;
+
+  let input = "a";
+
+  let result: IResult<_, _, VerboseError<&str>> = pair(char('a'), char('b'))(input);
+  let err = match result.unwrap_err() {
+    Err::Error(e) => e,
+    _ => unreachable!(),
+  };
+
+  let msg = convert_error(input, err);
+  assert_eq!(
+    msg,
+    "0: at line 1:\na\n ^\nexpected \'b\', got end of input\n\n"
+  );
+}
+
+#[test]
+fn issue_1231_bits_expect_fn_closure() {
+  use nom::bits::{bits, complete::take};
+  use nom::error::Error;
+  use nom::sequence::tuple;
+  pub fn example(input: &[u8]) -> IResult<&[u8], (u8, u8)> {
+    bits::<_, _, Error<_>, _, _>(tuple((take(1usize), take(1usize))))(input)
+  }
+  assert_eq!(example(&[0xff]), Ok((&b""[..], (1, 1))));
+}
+
+#[test]
+fn issue_1282_findtoken_char() {
+  use nom::character::complete::one_of;
+  use nom::error::Error;
+  let parser = one_of::<_, _, Error<_>>(&['a', 'b', 'c'][..]);
+  assert_eq!(parser("aaa"), Ok(("aa", 'a')));
+}