vault-link/backend/reconcile/src/diffs/raw_operation.rs
2024-11-17 22:12:27 +00:00

47 lines
1.6 KiB
Rust

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