1 //#![feature(trace_macros)]
2 #![allow(dead_code)]
3 #![cfg_attr(feature = "cargo-clippy", allow(redundant_closure))]
4
5 use nom::{error::ErrorKind, Err, IResult, Needed};
6
7 #[allow(dead_code)]
8 struct Range {
9 start: char,
10 end: char,
11 }
12
take_char(input: &[u8]) -> IResult<&[u8], char>13 pub fn take_char(input: &[u8]) -> IResult<&[u8], char> {
14 if !input.is_empty() {
15 Ok((&input[1..], input[0] as char))
16 } else {
17 Err(Err::Incomplete(Needed::new(1)))
18 }
19 }
20
21 #[cfg(feature = "std")]
22 mod parse_int {
23 use nom::HexDisplay;
24 use nom::{
25 character::streaming::{digit1 as digit, space1 as space},
26 combinator::{complete, map, opt},
27 multi::many0,
28 IResult,
29 };
30 use std::str;
31
parse_ints(input: &[u8]) -> IResult<&[u8], Vec<i32>>32 fn parse_ints(input: &[u8]) -> IResult<&[u8], Vec<i32>> {
33 many0(spaces_or_int)(input)
34 }
35
spaces_or_int(input: &[u8]) -> IResult<&[u8], i32>36 fn spaces_or_int(input: &[u8]) -> IResult<&[u8], i32> {
37 println!("{}", input.to_hex(8));
38 let (i, _) = opt(complete(space))(input)?;
39 let (i, res) = map(complete(digit), |x| {
40 println!("x: {:?}", x);
41 let result = str::from_utf8(x).unwrap();
42 println!("Result: {}", result);
43 println!("int is empty?: {}", x.is_empty());
44 match result.parse() {
45 Ok(i) => i,
46 Err(e) => panic!("UH OH! NOT A DIGIT! {:?}", e),
47 }
48 })(i)?;
49
50 Ok((i, res))
51 }
52
53 #[test]
issue_142()54 fn issue_142() {
55 let subject = parse_ints(&b"12 34 5689a"[..]);
56 let expected = Ok((&b"a"[..], vec![12, 34, 5689]));
57 assert_eq!(subject, expected);
58
59 let subject = parse_ints(&b"12 34 5689 "[..]);
60 let expected = Ok((&b" "[..], vec![12, 34, 5689]));
61 assert_eq!(subject, expected)
62 }
63 }
64
65 #[test]
usize_length_bytes_issue()66 fn usize_length_bytes_issue() {
67 use nom::multi::length_data;
68 use nom::number::streaming::be_u16;
69 let _: IResult<&[u8], &[u8], (&[u8], ErrorKind)> = length_data(be_u16)(b"012346");
70 }
71
72 #[test]
take_till_issue()73 fn take_till_issue() {
74 use nom::bytes::streaming::take_till;
75
76 fn nothing(i: &[u8]) -> IResult<&[u8], &[u8]> {
77 take_till(|_| true)(i)
78 }
79
80 assert_eq!(nothing(b""), Err(Err::Incomplete(Needed::new(1))));
81 assert_eq!(nothing(b"abc"), Ok((&b"abc"[..], &b""[..])));
82 }
83
84 #[test]
issue_655()85 fn issue_655() {
86 use nom::character::streaming::{line_ending, not_line_ending};
87 fn twolines(i: &str) -> IResult<&str, (&str, &str)> {
88 let (i, l1) = not_line_ending(i)?;
89 let (i, _) = line_ending(i)?;
90 let (i, l2) = not_line_ending(i)?;
91 let (i, _) = line_ending(i)?;
92
93 Ok((i, (l1, l2)))
94 }
95
96 assert_eq!(twolines("foo\nbar\n"), Ok(("", ("foo", "bar"))));
97 assert_eq!(twolines("féo\nbar\n"), Ok(("", ("féo", "bar"))));
98 assert_eq!(twolines("foé\nbar\n"), Ok(("", ("foé", "bar"))));
99 assert_eq!(twolines("foé\r\nbar\n"), Ok(("", ("foé", "bar"))));
100 }
101
102 #[cfg(feature = "alloc")]
issue_717(i: &[u8]) -> IResult<&[u8], Vec<&[u8]>>103 fn issue_717(i: &[u8]) -> IResult<&[u8], Vec<&[u8]>> {
104 use nom::bytes::complete::{is_not, tag};
105 use nom::multi::separated_list0;
106
107 separated_list0(tag([0x0]), is_not([0x0u8]))(i)
108 }
109
110 mod issue_647 {
111 use nom::bytes::streaming::tag;
112 use nom::combinator::complete;
113 use nom::multi::separated_list0;
114 use nom::{error::Error, number::streaming::be_f64, Err, IResult};
115 pub type Input<'a> = &'a [u8];
116
117 #[derive(PartialEq, Debug, Clone)]
118 struct Data {
119 c: f64,
120 v: Vec<f64>,
121 }
122
list<'a, 'b>( input: Input<'a>, _cs: &'b f64, ) -> Result<(Input<'a>, Vec<f64>), Err<Error<&'a [u8]>>>123 fn list<'a, 'b>(
124 input: Input<'a>,
125 _cs: &'b f64,
126 ) -> Result<(Input<'a>, Vec<f64>), Err<Error<&'a [u8]>>> {
127 separated_list0(complete(tag(",")), complete(be_f64))(input)
128 }
129
data(input: Input<'_>) -> IResult<Input<'_>, Data>130 fn data(input: Input<'_>) -> IResult<Input<'_>, Data> {
131 let (i, c) = be_f64(input)?;
132 let (i, _) = tag("\n")(i)?;
133 let (i, v) = list(i, &c)?;
134 Ok((i, Data { c, v }))
135 }
136 }
137
138 #[test]
issue_848_overflow_incomplete_bits_to_bytes()139 fn issue_848_overflow_incomplete_bits_to_bytes() {
140 fn take(i: &[u8]) -> IResult<&[u8], &[u8]> {
141 use nom::bytes::streaming::take;
142 take(0x2000000000000000_usize)(i)
143 }
144 fn parser(i: &[u8]) -> IResult<&[u8], &[u8]> {
145 use nom::bits::{bits, bytes};
146
147 bits(bytes(take))(i)
148 }
149 assert_eq!(
150 parser(&b""[..]),
151 Err(Err::Failure(nom::error_position!(
152 &b""[..],
153 ErrorKind::TooLarge
154 )))
155 );
156 }
157
158 #[test]
issue_942()159 fn issue_942() {
160 use nom::error::{ContextError, ParseError};
161 pub fn parser<'a, E: ParseError<&'a str> + ContextError<&'a str>>(
162 i: &'a str,
163 ) -> IResult<&'a str, usize, E> {
164 use nom::{character::complete::char, error::context, multi::many0_count};
165 many0_count(context("char_a", char('a')))(i)
166 }
167 assert_eq!(parser::<()>("aaa"), Ok(("", 3)));
168 }
169
170 #[test]
issue_many_m_n_with_zeros()171 fn issue_many_m_n_with_zeros() {
172 use nom::character::complete::char;
173 use nom::multi::many_m_n;
174 let mut parser = many_m_n::<_, _, (), _>(0, 0, char('a'));
175 assert_eq!(parser("aaa"), Ok(("aaa", vec![])));
176 }
177
178 #[test]
issue_1027_convert_error_panic_nonempty()179 fn issue_1027_convert_error_panic_nonempty() {
180 use nom::character::complete::char;
181 use nom::error::{convert_error, VerboseError};
182 use nom::sequence::pair;
183
184 let input = "a";
185
186 let result: IResult<_, _, VerboseError<&str>> = pair(char('a'), char('b'))(input);
187 let err = match result.unwrap_err() {
188 Err::Error(e) => e,
189 _ => unreachable!(),
190 };
191
192 let msg = convert_error(input, err);
193 assert_eq!(
194 msg,
195 "0: at line 1:\na\n ^\nexpected \'b\', got end of input\n\n"
196 );
197 }
198
199 #[test]
issue_1231_bits_expect_fn_closure()200 fn issue_1231_bits_expect_fn_closure() {
201 use nom::bits::{bits, complete::take};
202 use nom::error::Error;
203 use nom::sequence::tuple;
204 pub fn example(input: &[u8]) -> IResult<&[u8], (u8, u8)> {
205 bits::<_, _, Error<_>, _, _>(tuple((take(1usize), take(1usize))))(input)
206 }
207 assert_eq!(example(&[0xff]), Ok((&b""[..], (1, 1))));
208 }
209
210 #[test]
issue_1282_findtoken_char()211 fn issue_1282_findtoken_char() {
212 use nom::character::complete::one_of;
213 use nom::error::Error;
214 let parser = one_of::<_, _, Error<_>>(&['a', 'b', 'c'][..]);
215 assert_eq!(parser("aaa"), Ok(("aa", 'a')));
216 }
217
218 #[test]
issue_1459_clamp_capacity()219 fn issue_1459_clamp_capacity() {
220 use nom::character::complete::char;
221
222 // shouldn't panic
223 use nom::multi::many_m_n;
224 let mut parser = many_m_n::<_, _, (), _>(usize::MAX, usize::MAX, char('a'));
225 assert_eq!(parser("a"), Err(nom::Err::Error(())));
226
227 // shouldn't panic
228 use nom::multi::count;
229 let mut parser = count::<_, _, (), _>(char('a'), usize::MAX);
230 assert_eq!(parser("a"), Err(nom::Err::Error(())));
231 }
232
233 #[test]
issue_1617_count_parser_returning_zero_size()234 fn issue_1617_count_parser_returning_zero_size() {
235 use nom::{bytes::complete::tag, combinator::map, error::Error, multi::count};
236
237 // previously, `count()` panicked if the parser had type `O = ()`
238 let parser = map(tag::<_, _, Error<&str>>("abc"), |_| ());
239 // shouldn't panic
240 let result = count(parser, 3)("abcabcabcdef").expect("parsing should succeed");
241 assert_eq!(result, ("def", vec![(), (), ()]));
242 }
243