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refactor(TextCursor): translate Text's "address" after address change loop has been finished

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kotaindah55 2025-04-07 03:24:59 +02:00
parent f7c172fab8
commit 77620ebe89
1 changed files with 40 additions and 38 deletions
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78
src/editor-mode/utils/doc-utils.ts
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@ -24,28 +24,29 @@ export class TextCursor {
}
public next(): boolean {
for (let i = this.address.length - 1; i >= 0; i--) {
let { parent, index } = this.address[i],
for (let deep = this.address.length - 1; deep >= 0; deep--) {
let { parent, index } = this.address[deep],
branches = _isTextLeaf(parent) ? parent.text : parent.children;
if (index + 1 < branches.length) {
this.address[i].index++;
while (i < this.address.length) {
let { parent, index } = this.address[i++];
if (_isTextLeaf(parent)) {
let length = parent.text[index].length,
from = this.curLine.to + 1;
this.curLine = {
number: this.curLine.number + 1,
text: parent.text[index],
from,
to: from + length,
length
};
} else {
this.address[i].parent = parent.children[index] as TextNode | TextLeaf;
this.address[i].index = 0;
this.address[deep].index++;
while (++deep < this.address.length) {
let { parent, index } = this.address[deep - 1];
if (_isTextNode(parent)) {
this.address[deep].parent = parent.children[index] as TextNode | TextLeaf;
this.address[deep].index = 0;
}
}
let { parent, index } = this.address[this.address.length - 1];
if (!_isTextLeaf(parent)) throw TypeError("TextLeaf not found!");
let length = parent.text[index].length,
from = this.curLine.to + 1;
this.curLine = {
number: this.curLine.number + 1,
text: parent.text[index],
from,
to: from + length,
length
};
return true;
}
}
@ -53,27 +54,28 @@ export class TextCursor {
}
public prev(): boolean {
for (let i = this.address.length - 1; i >= 0; i--) {
if (this.address[i].index > 0) {
this.address[i].index--;
while (i < this.address.length) {
let { parent, index } = this.address[i++];
if (_isTextLeaf(parent)) {
let length = parent.text[index].length,
to = this.curLine.from - 1;
this.curLine = {
number: this.curLine.number - 1,
text: parent.text[index],
from: to - length,
to,
length
};
} else {
for (let deep = this.address.length - 1; deep >= 0; deep--) {
if (this.address[deep].index > 0) {
this.address[deep].index--;
while (++deep < this.address.length) {
let { parent, index } = this.address[deep - 1];
if (_isTextNode(parent)) {
let prevBranch = parent.children[index] as TextNode | TextLeaf;
this.address[i].parent = prevBranch;
this.address[i].index = (_isTextLeaf(prevBranch) ? prevBranch.text : prevBranch.children).length - 1;
this.address[deep].parent = prevBranch;
this.address[deep].index = (_isTextLeaf(prevBranch) ? prevBranch.text : prevBranch.children).length - 1;
}
}
let { parent, index } = this.address[this.address.length - 1];
if (!_isTextLeaf(parent)) throw TypeError("TextLeaf not found!");
let length = parent.text[index].length,
to = this.curLine.from - 1;
this.curLine = {
number: this.curLine.number - 1,
text: parent.text[index],
from: to - length,
to,
length
};
return true;
}
}
@ -116,14 +118,14 @@ export class TextCursor {
}
public getPrevLine(): ILine | null {
if (this.curLine.number <= 1 || !this.prev()) return null;
if (!this.prev() || this.curLine.number <= 1) return null;
let prevLine = this.curLine;
this.next();
return prevLine;
}
public getNextLine(): ILine | null {
if (this.curLine.number >= this.doc.lines || !this.next()) return null;
if (!this.next() || this.curLine.number >= this.doc.lines) return null;
let nextLine = this.curLine;
this.prev();
return nextLine;