49 lines
1.7 KiB
Rust
49 lines
1.7 KiB
Rust
use std::fmt::Debug;
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use crate::{operation_transformation::Operation, raw_operation::RawOperation};
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/// Turn raw operations into ordered operations while keeping track of the
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/// original token's indexes.
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pub fn cook_operations<I, T>(raw_operations: I) -> impl Iterator<Item = Operation<T>>
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where
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I: IntoIterator<Item = RawOperation<T>>,
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T: PartialEq + Clone + Debug,
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{
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let mut original_text_index = 0; // this is the start index of the operation on the original text
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raw_operations.into_iter().map(move |raw_operation| {
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let length = raw_operation.original_text_length();
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match raw_operation {
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RawOperation::Equal(..) => {
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let op = if cfg!(debug_assertions) {
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Operation::create_equal_with_text(
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original_text_index,
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raw_operation.get_original_text(),
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)
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} else {
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Operation::create_equal(original_text_index, length)
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};
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original_text_index += length;
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op
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}
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RawOperation::Insert(tokens) => Operation::create_insert(original_text_index, tokens),
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RawOperation::Delete(..) => {
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let op = if cfg!(debug_assertions) {
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Operation::create_delete_with_text(
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original_text_index,
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raw_operation.get_original_text(),
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)
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} else {
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Operation::create_delete(original_text_index, length)
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};
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original_text_index += length;
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op
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}
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}
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})
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}
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