48 lines
1.6 KiB
Rust
48 lines
1.6 KiB
Rust
use crate::tokenizer::token::Token;
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#[derive(Debug, Clone, PartialEq)]
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pub enum RawOperation<T>
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where
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T: PartialEq + Clone,
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{
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Insert(Vec<Token<T>>),
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Delete(Vec<Token<T>>),
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Equal(Vec<Token<T>>),
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}
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impl<T> RawOperation<T>
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where
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T: PartialEq + Clone,
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{
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pub fn tokens(&self) -> &Vec<Token<T>> {
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match self {
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RawOperation::Insert(tokens) => tokens,
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RawOperation::Delete(tokens) => tokens,
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RawOperation::Equal(tokens) => tokens,
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}
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}
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pub fn original_text_length(&self) -> usize {
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self.tokens().iter().map(Token::get_original_length).sum()
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}
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pub fn get_original_text(self) -> String { self.tokens().iter().map(Token::original).collect() }
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/// Extends the operation with another operation if returning the new
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/// operation. Only operations of the same type can be used to extend.
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/// If the operations are of different types, returns None.
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pub fn extend(self, other: RawOperation<T>) -> Option<RawOperation<T>> {
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match (self, other) {
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(RawOperation::Insert(tokens1), RawOperation::Insert(tokens2)) => Some(
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RawOperation::Insert(tokens1.into_iter().chain(tokens2).collect()),
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),
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(RawOperation::Delete(tokens1), RawOperation::Delete(tokens2)) => Some(
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RawOperation::Delete(tokens1.into_iter().chain(tokens2).collect()),
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),
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(RawOperation::Equal(tokens1), RawOperation::Equal(tokens2)) => Some(
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RawOperation::Equal(tokens1.into_iter().chain(tokens2).collect()),
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),
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_ => None,
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}
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}
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}
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