From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/rust/nom/tests/float.rs | 46 +++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 third_party/rust/nom/tests/float.rs (limited to 'third_party/rust/nom/tests/float.rs') diff --git a/third_party/rust/nom/tests/float.rs b/third_party/rust/nom/tests/float.rs new file mode 100644 index 0000000000..634b189899 --- /dev/null +++ b/third_party/rust/nom/tests/float.rs @@ -0,0 +1,46 @@ +use nom::branch::alt; +use nom::bytes::complete::tag; +use nom::character::streaming::digit1 as digit; +use nom::combinator::{map, map_res, opt, recognize}; +use nom::sequence::{delimited, pair}; +use nom::IResult; + +use std::str; +use std::str::FromStr; + +fn unsigned_float(i: &[u8]) -> IResult<&[u8], f32> { + let float_bytes = recognize(alt(( + delimited(digit, tag("."), opt(digit)), + delimited(opt(digit), tag("."), digit), + ))); + let float_str = map_res(float_bytes, str::from_utf8); + map_res(float_str, FromStr::from_str)(i) +} + +fn float(i: &[u8]) -> IResult<&[u8], f32> { + map( + pair(opt(alt((tag("+"), tag("-")))), unsigned_float), + |(sign, value)| { + sign + .and_then(|s| if s[0] == b'-' { Some(-1f32) } else { None }) + .unwrap_or(1f32) + * value + }, + )(i) +} + +#[test] +fn unsigned_float_test() { + assert_eq!(unsigned_float(&b"123.456;"[..]), Ok((&b";"[..], 123.456))); + assert_eq!(unsigned_float(&b"0.123;"[..]), Ok((&b";"[..], 0.123))); + assert_eq!(unsigned_float(&b"123.0;"[..]), Ok((&b";"[..], 123.0))); + assert_eq!(unsigned_float(&b"123.;"[..]), Ok((&b";"[..], 123.0))); + assert_eq!(unsigned_float(&b".123;"[..]), Ok((&b";"[..], 0.123))); +} + +#[test] +fn float_test() { + assert_eq!(float(&b"123.456;"[..]), Ok((&b";"[..], 123.456))); + assert_eq!(float(&b"+123.456;"[..]), Ok((&b";"[..], 123.456))); + assert_eq!(float(&b"-123.456;"[..]), Ok((&b";"[..], -123.456))); +} -- cgit v1.2.3