54 lines
1.2 KiB
Rust
54 lines
1.2 KiB
Rust
use std::ops::Range;
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#[derive(Debug, Clone, Eq, PartialEq)]
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pub struct StrRange<'src_buf> {
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src: &'src_buf str,
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range: Range<usize>,
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}
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impl<'src_buf> StrRange<'src_buf> {
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pub fn new(src: &'src_buf str, start: usize, length: usize) -> Self {
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Self {
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src,
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range: start..(start + length),
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}
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}
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pub fn src(&self) -> &'src_buf str {
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self.src
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}
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pub fn increase_length(&mut self, add_len: usize) {
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self.range = self.range.start..self.range.end + add_len;
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}
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pub fn as_str(&self) -> &'src_buf str {
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&self.src[self.range.clone()]
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}
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pub fn len(&self) -> usize {
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self.range.len()
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}
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pub fn is_empty(&self) -> bool {
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self.range.is_empty()
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}
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// pub fn offset_range(&self, range: Range<usize>) -> Self {
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// Self {
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// range: (self.range.start + range.start)..(self.range.start + range.end),
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// src: self.src,
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// }
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// }
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pub fn start(&self) -> usize {
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self.range.start
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}
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}
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impl<'src_buf> core::fmt::Display for StrRange<'src_buf> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> core::fmt::Result {
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write![f, "{}", self.as_str()]
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}
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}
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