31f70913a2
- Use function abstractions (such as map, reduce, filter etc.) over for-of loops to gain benefits of having less side effects and easier readability. - Enable `downLevelIterations` for writing modern code with lazy evaluation. - Refactor for of loops to named abstractions to clearly express their intentions without needing to analyse the loop itself. - Add missing cases for changes that had no tests.
72 lines
2.4 KiB
TypeScript
72 lines
2.4 KiB
TypeScript
import { IScript } from '@/domain/IScript';
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import { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
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import { SelectedScript } from '../../Selection/SelectedScript';
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import { ICodeChangedEvent } from './ICodeChangedEvent';
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export class CodeChangedEvent implements ICodeChangedEvent {
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public readonly code: string;
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public readonly addedScripts: ReadonlyArray<IScript>;
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public readonly removedScripts: ReadonlyArray<IScript>;
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public readonly changedScripts: ReadonlyArray<IScript>;
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private readonly scripts: Map<IScript, ICodePosition>;
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constructor(
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code: string,
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oldScripts: ReadonlyArray<SelectedScript>,
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scripts: Map<SelectedScript, ICodePosition>,
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) {
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ensureAllPositionsExist(code, Array.from(scripts.values()));
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this.code = code;
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const newScripts = Array.from(scripts.keys());
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this.addedScripts = selectIfNotExists(newScripts, oldScripts);
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this.removedScripts = selectIfNotExists(oldScripts, newScripts);
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this.changedScripts = getChangedScripts(oldScripts, newScripts);
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this.scripts = new Map<IScript, ICodePosition>();
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scripts.forEach((position, selection) => {
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this.scripts.set(selection.script, position);
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});
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}
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public isEmpty(): boolean {
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return this.scripts.size === 0;
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}
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public getScriptPositionInCode(script: IScript): ICodePosition {
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return this.scripts.get(script);
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}
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}
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function ensureAllPositionsExist(script: string, positions: ReadonlyArray<ICodePosition>) {
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const totalLines = script.split(/\r\n|\r|\n/).length;
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const missingPositions = positions.filter((position) => position.endLine > totalLines);
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if (missingPositions.length > 0) {
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throw new Error(
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`Out of range script end line: "${missingPositions.map((pos) => pos.endLine).join('", "')}"`
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+ `(total code lines: ${totalLines}).`,
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);
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}
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}
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function getChangedScripts(
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oldScripts: ReadonlyArray<SelectedScript>,
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newScripts: ReadonlyArray<SelectedScript>,
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): ReadonlyArray<IScript> {
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return newScripts
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.filter((newScript) => oldScripts.find((oldScript) => oldScript.id === newScript.id
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&& oldScript.revert !== newScript.revert))
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.map((selection) => selection.script);
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}
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function selectIfNotExists(
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selectableContainer: ReadonlyArray<SelectedScript>,
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test: ReadonlyArray<SelectedScript>,
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) {
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return selectableContainer
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.filter((script) => !test.find((oldScript) => oldScript.id === script.id))
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.map((selection) => selection.script);
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}
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