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Simplify common number parsing

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This commit is contained in:
Tobie Morgan Hitchcock 2022-03-16 21:04:22 +00:00
parent f13aafe576
commit dc2b436131
1 changed files with 5 additions and 6 deletions
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11
lib/src/sql/common.rs
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@ -8,7 +8,6 @@ use nom::character::is_alphanumeric;
use nom::multi::many1;
use nom::Err::Error;
use std::ops::RangeBounds;
use std::str;
pub fn colons(i: &str) -> IResult<&str, ()> {
let (i, _) = mightbespace(i)?;
@ -46,7 +45,7 @@ pub fn escape(s: &str, f: &dyn Fn(char) -> bool, c: &str) -> String {
pub fn take_u32(i: &str) -> IResult<&str, u32> {
let (i, v) = take_while(is_digit)(i)?;
match str::FromStr::from_str(v) {
match v.parse::<u32>() {
Ok(v) => Ok((i, v)),
_ => Err(Error(ParserError(i))),
}
@ -54,7 +53,7 @@ pub fn take_u32(i: &str) -> IResult<&str, u32> {
pub fn take_u64(i: &str) -> IResult<&str, u64> {
let (i, v) = take_while(is_digit)(i)?;
match str::FromStr::from_str(v) {
match v.parse::<u64>() {
Ok(v) => Ok((i, v)),
_ => Err(Error(ParserError(i))),
}
@ -62,7 +61,7 @@ pub fn take_u64(i: &str) -> IResult<&str, u64> {
pub fn take_usize(i: &str) -> IResult<&str, usize> {
let (i, v) = take_while(is_digit)(i)?;
match str::FromStr::from_str(v) {
match v.parse::<usize>() {
Ok(v) => Ok((i, v)),
_ => Err(Error(ParserError(i))),
}
@ -70,7 +69,7 @@ pub fn take_usize(i: &str) -> IResult<&str, usize> {
pub fn take_digits(i: &str, n: usize) -> IResult<&str, u32> {
let (i, v) = take_while_m_n(n, n, is_digit)(i)?;
match str::FromStr::from_str(v) {
match v.parse::<u32>() {
Ok(v) => Ok((i, v)),
_ => Err(Error(ParserError(i))),
}
@ -78,7 +77,7 @@ pub fn take_digits(i: &str, n: usize) -> IResult<&str, u32> {
pub fn take_digits_range(i: &str, n: usize, range: impl RangeBounds<u32>) -> IResult<&str, u32> {
let (i, v) = take_while_m_n(n, n, is_digit)(i)?;
match str::FromStr::from_str(v) {
match v.parse::<u32>() {
Ok(v) if range.contains(&v) => Ok((i, v)),
_ => Err(Error(ParserError(i))),
}