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refactor: create mod parse_prefixed_u32

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Wataru Otsubo 2025-01-29 21:46:41 +09:00
parent 1b93197ef6
commit 371068e363
1 changed files with 42 additions and 37 deletions
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27
src/parser.rs
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@ -1,22 +1,26 @@
//! Module for converting XML custom token string to rust types. //! Module for converting XML custom token string to rust types.
use std::num; pub(crate) use parse_prefixed_u32::ParsePrefixedU32;
pub use parse_prefixed_u32::ParsePrefixedU32Error;
use thiserror::Error; mod parse_prefixed_u32 {
use std::num;
#[derive(Debug, Error)] use thiserror::Error;
pub enum ParsePrefixedU32Error {
#[derive(Debug, Error)]
pub enum ParsePrefixedU32Error {
#[error("invalid prefix: found {found}")] #[error("invalid prefix: found {found}")]
InvalidPrefix { found: char }, InvalidPrefix { found: char },
#[error("parse int error")] #[error("parse int error")]
ParseIntError(#[from] num::ParseIntError), ParseIntError(#[from] num::ParseIntError),
} }
pub(crate) trait ParsePrefixedU32 { pub(crate) trait ParsePrefixedU32 {
fn parse_prefixed_u32(&self) -> Result<u32, ParsePrefixedU32Error>; fn parse_prefixed_u32(&self) -> Result<u32, ParsePrefixedU32Error>;
} }
impl ParsePrefixedU32 for &str { impl ParsePrefixedU32 for &str {
fn parse_prefixed_u32(&self) -> Result<u32, ParsePrefixedU32Error> { fn parse_prefixed_u32(&self) -> Result<u32, ParsePrefixedU32Error> {
let radix = match self.chars().nth(1) { let radix = match self.chars().nth(1) {
Some('x') => 16, Some('x') => 16,
@ -30,10 +34,10 @@ impl ParsePrefixedU32 for &str {
radix => Ok(u32::from_str_radix(&self[2..], radix)?), radix => Ok(u32::from_str_radix(&self[2..], radix)?),
} }
} }
} }
#[cfg(test)] #[cfg(test)]
mod test { mod test {
use super::ParsePrefixedU32; use super::ParsePrefixedU32;
#[test] #[test]
@ -44,4 +48,5 @@ mod test {
assert!("0abcde".parse_prefixed_u32().is_err()); assert!("0abcde".parse_prefixed_u32().is_err());
} }
}
} }