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simpler string cache on bufferline

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This commit is contained in:
Jörg Breitbart
2026-08-18 22:34:57 +02:00
parent fa3821adb9
commit 4708890a27
10 changed files with 63 additions and 327 deletions
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src/common/buffer/BufferReflow.test.ts
+7 -9
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@@ -5,18 +5,16 @@
import { assert } from 'chai';
import { CircularList } from '../CircularList';
import { BufferLine } from './BufferLine';
import { BufferLineStringCache } from './BufferLineStringCache';
import { CellData } from './CellData';
import { NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE } from './Constants';
import { reflowLargerGetLinesToRemove, reflowSmallerGetNewLineLengths } from './BufferReflow';
import { IBufferLine } from './Types';
const TEST_STRING_CACHE = new BufferLineStringCache();
describe('BufferReflow', () => {
describe('reflowSmallerGetNewLineLengths', () => {
it('should return correct line lengths for a small line with wide characters', () => {
const line = new BufferLine(TEST_STRING_CACHE, 4);
const line = new BufferLine(4);
line.set(0, [0, '汉', 2, '汉'.charCodeAt(0)]);
line.set(1, [0, '', 0, 0]);
line.set(2, [0, '语', 2, '语'.charCodeAt(0)]);
@@ -26,7 +24,7 @@ describe('BufferReflow', () => {
assert.deepEqual(reflowSmallerGetNewLineLengths([line], 4, 2), [2, 2], 'line: 汉, 语');
});
it('should return correct line lengths for a large line with wide characters', () => {
const line = new BufferLine(TEST_STRING_CACHE, 12);
const line = new BufferLine(12);
for (let i = 0; i < 12; i += 4) {
line.set(i, [0, '汉', 2, '汉'.charCodeAt(0)]);
line.set(i + 2, [0, '语', 2, '语'.charCodeAt(0)]);
@@ -48,7 +46,7 @@ describe('BufferReflow', () => {
assert.deepEqual(reflowSmallerGetNewLineLengths([line], 12, 2), [2, 2, 2, 2, 2, 2], 'line: 汉, 语, 汉, 语, 汉, 语');
});
it('should return correct line lengths for a string with wide and single characters', () => {
const line = new BufferLine(TEST_STRING_CACHE, 6);
const line = new BufferLine(6);
line.set(0, [0, 'a', 1, 'a'.charCodeAt(0)]);
line.set(1, [0, '汉', 2, '汉'.charCodeAt(0)]);
line.set(2, [0, '', 0, 0]);
@@ -62,14 +60,14 @@ describe('BufferReflow', () => {
assert.deepEqual(reflowSmallerGetNewLineLengths([line], 6, 2), [1, 2, 2, 1], 'line: a, 汉, 语, b');
});
it('should return correct line lengths for a wrapped line with wide and single characters', () => {
const line1 = new BufferLine(TEST_STRING_CACHE, 6);
const line1 = new BufferLine(6);
line1.set(0, [0, 'a', 1, 'a'.charCodeAt(0)]);
line1.set(1, [0, '汉', 2, '汉'.charCodeAt(0)]);
line1.set(2, [0, '', 0, 0]);
line1.set(3, [0, '语', 2, '语'.charCodeAt(0)]);
line1.set(4, [0, '', 0, 0]);
line1.set(5, [0, 'b', 1, 'b'.charCodeAt(0)]);
const line2 = new BufferLine(TEST_STRING_CACHE, 6, undefined, true);
const line2 = new BufferLine(6, undefined, true);
line2.set(0, [0, 'a', 1, 'a'.charCodeAt(0)]);
line2.set(1, [0, '汉', 2, '汉'.charCodeAt(0)]);
line2.set(2, [0, '', 0, 0]);
@@ -84,7 +82,7 @@ describe('BufferReflow', () => {
assert.deepEqual(reflowSmallerGetNewLineLengths([line1, line2], 6, 2), [1, 2, 2, 2, 2, 2, 1], 'lines: a, 汉, 语, ba, 汉, 语, b');
});
it('should work on lines ending in null space', () => {
const line = new BufferLine(TEST_STRING_CACHE, 5);
const line = new BufferLine(5);
line.set(0, [0, '汉', 2, '汉'.charCodeAt(0)]);
line.set(1, [0, '', 0, 0]);
line.set(2, [0, '语', 2, '语'.charCodeAt(0)]);
@@ -102,7 +100,7 @@ describe('BufferReflow', () => {
function createWrappedLines(chars: string): CircularList<IBufferLine> {
const lines = new CircularList<IBufferLine>(chars.length);
for (let i = 0; i < chars.length; i++) {
const line = new BufferLine(TEST_STRING_CACHE, 1);
const line = new BufferLine(1);
line.set(0, [0, chars[i], 1, chars.charCodeAt(i)]);
line.isWrapped = i > 0;
lines.push(line);