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Implement 2023 day 2 part 1

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Bert Peters
2023-12-02 10:32:53 +01:00
parent 524527dbd1
commit 033625f041
3 changed files with 89 additions and 9 deletions
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16
2023/src/common.rs
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@@ -16,6 +16,14 @@ use nom::IResult;
use nom::InputLength;
use nom::Parser;
pub fn convert_nom_error(e: nom::error::Error<&[u8]>) -> anyhow::Error {
anyhow::anyhow!(
"Parser error {:?} to parse at {}",
e.code,
String::from_utf8_lossy(e.input)
)
}
/// Parse input from some nom parser and return as an anyhow result
///
/// This method exists as a convenience because nom's errors cannot otherwise be easily converted to
@@ -24,13 +32,7 @@ pub fn parse_input<'a, O>(
input: &'a [u8],
mut parser: impl Parser<&'a [u8], O, nom::error::Error<&'a [u8]>>,
) -> Result<O> {
let (unparsed, output) = parser.parse(input).finish().map_err(|e| {
anyhow::anyhow!(
"Parser error {:?} to parse at {}",
e.code,
String::from_utf8_lossy(e.input)
)
})?;
let (unparsed, output) = parser.parse(input).finish().map_err(convert_nom_error)?;
if !unparsed.is_empty() {
Err(anyhow::anyhow!(