yonote/yjs
24
0
Fork 0
Code Pull Requests 1 Releases Activity

duplicate references to the merge target into the struct store

Browse Source 
this avoids mutating the struct objects beyond the merge, no additional properties
This commit is contained in:
Noel Levy 2023-07-06 16:28:02 -07:00
parent 17cc6d0226
commit 4305ca2196
2 changed files with 10 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/utils/StructStore.js
View File

@ -112,7 +112,7 @@ export const addStruct = (store, struct) => {
export const findIndexSS = (structs, clock) => {
let left = 0
let right = structs.length - 1
while (/** @type any */(structs[right])._wasMerged) {
while (right > 0 && structs[right] === structs[right - 1]) {
right--
}
let mid = structs[right]
@ -129,7 +129,7 @@ export const findIndexSS = (structs, clock) => {
midclock = mid.id.clock
if (midclock <= clock) {
if (clock < midclock + mid.length) {
while (/** @type any */(structs[midindex])._wasMerged) {
while (midindex > 0 && structs[midindex] === structs[midindex - 1]) {
midindex--
}
return midindex

19
src/utils/Transaction.js
View File

@ -184,24 +184,21 @@ const tryToMergeWithLeft = (structs, pos) => {
* @param {Array<AbstractStruct>} structs
* @param {number} pos
*/
const tryToMergeWithLeftNoSplice = (structs, pos) => {
export const tryToMergeWithLeftNoSplice = (structs, pos) => {
const left = structs[pos - 1]
const right = structs[pos]
if (/** @type any */(right)._wasMerged) {
if (left === right) {
return 0
}
let offset = 1
let left
do {
left = structs[pos - offset++]
} while (/** @type any */(left)._wasMerged)
if (left.deleted === right.deleted && left.constructor === right.constructor) {
if (left.mergeWith(right)) {
/** @type any */(right)._wasMerged = true
if (right instanceof Item && right.parentSub !== null && /** @type {AbstractType<any>} */ (right.parent)._map.get(right.parentSub) === right) {
/** @type {AbstractType<any>} */ (right.parent)._map.set(right.parentSub, /** @type {Item} */ (left))
}
right.id = left.id
right.length = left.length
let rightPos = pos
while (structs[rightPos] === right) {
structs[rightPos++] = left
}
return 1
}
}
@ -215,7 +212,7 @@ const tryToMergeWithLeftNoSplice = (structs, pos) => {
const filterMergedStructs = (structs, mergedCount) => {
let from = 0
for (let to = 0; to < structs.length - mergedCount; to++) {
while (/** @type any */(structs[from])._wasMerged) {
while (structs[from] === structs[from - 1]) {
from++
}
structs[to] = structs[from]