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Diffstat (limited to 'third_party/rust/nom/tests/issues.rs')
| -rw-r--r-- | third_party/rust/nom/tests/issues.rs | 242 |
1 files changed, 242 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..7985702f67 --- /dev/null +++ b/third_party/rust/nom/tests/issues.rs @@ -0,0 +1,242 @@ +//#![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'))); +} + +#[test] +fn issue_1459_clamp_capacity() { + use nom::character::complete::char; + + // shouldn't panic + use nom::multi::many_m_n; + let mut parser = many_m_n::<_, _, (), _>(usize::MAX, usize::MAX, char('a')); + assert_eq!(parser("a"), Err(nom::Err::Error(()))); + + // shouldn't panic + use nom::multi::count; + let mut parser = count::<_, _, (), _>(char('a'), usize::MAX); + assert_eq!(parser("a"), Err(nom::Err::Error(()))); +} + +#[test] +fn issue_1617_count_parser_returning_zero_size() { + use nom::{bytes::complete::tag, combinator::map, error::Error, multi::count}; + + // previously, `count()` panicked if the parser had type `O = ()` + let parser = map(tag::<_, _, Error<&str>>("abc"), |_| ()); + // shouldn't panic + let result = count(parser, 3)("abcabcabcdef").expect("parsing should succeed"); + assert_eq!(result, ("def", vec![(), (), ()])); +} |