Add a memory storage space for layout computation

src/vs/editor/common/config/commonEditorConfig.ts

@@ -8,7 +8,7 @@ import { Emitter, Event } from 'vs/base/common/event';
 import { Disposable } from 'vs/base/common/lifecycle';
 import * as objects from 'vs/base/common/objects';
 import * as arrays from 'vs/base/common/arrays';
-import { IEditorOptions, editorOptionsRegistry, ValidatedEditorOptions, IEnvironmentalOptions, IComputedEditorOptions, ConfigurationChangedEvent, EDITOR_MODEL_DEFAULTS, EditorOption, FindComputedEditorOptionValueById } from 'vs/editor/common/config/editorOptions';
+import { IEditorOptions, editorOptionsRegistry, ValidatedEditorOptions, IEnvironmentalOptions, IComputedEditorOptions, ConfigurationChangedEvent, EDITOR_MODEL_DEFAULTS, EditorOption, FindComputedEditorOptionValueById, IComputeOptionsMemory } from 'vs/editor/common/config/editorOptions';
 import { EditorZoom } from 'vs/editor/common/config/editorZoom';
 import { BareFontInfo, FontInfo } from 'vs/editor/common/config/fontInfo';
 import { IConfiguration, IDimension } from 'vs/editor/common/editorCommon';
@@ -284,6 +284,7 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 	public readonly onDidChange: Event<ConfigurationChangedEvent> = this._onDidChange.event;
 
 	public readonly isSimpleWidget: boolean;
+	private _computeOptionsMemory: IComputeOptionsMemory;
 	public options!: ComputedEditorOptions;
 
 	private _isDominatedByLongLines: boolean;
@@ -299,6 +300,7 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 		this.isSimpleWidget = isSimpleWidget;
 
 		this._isDominatedByLongLines = false;
+		this._computeOptionsMemory = {};
 		this._viewLineCount = 1;
 		this._lineNumbersDigitCount = 1;
 
@@ -344,6 +346,7 @@ export abstract class CommonEditorConfiguration extends Disposable implements IC
 		const partialEnv = this._getEnvConfiguration();
 		const bareFontInfo = BareFontInfo.createFromValidatedSettings(this._validatedOptions, partialEnv.zoomLevel, this.isSimpleWidget);
 		const env: IEnvironmentalOptions = {
+			memory: this._computeOptionsMemory,
 			outerWidth: partialEnv.outerWidth,
 			outerHeight: partialEnv.outerHeight,
 			fontInfo: this.readConfiguration(bareFontInfo),

src/vs/editor/common/config/editorOptions.ts

@@ -687,6 +687,7 @@ export interface IComputedEditorOptions {
  * @internal
  */
 export interface IEnvironmentalOptions {
+	readonly memory: IComputeOptionsMemory | null;
 	readonly outerWidth: number;
 	readonly outerHeight: number;
 	readonly fontInfo: FontInfo;
@@ -700,6 +701,12 @@ export interface IEnvironmentalOptions {
 	readonly accessibilitySupport: AccessibilitySupport;
 }
 
+/**
+ * @internal
+ */
+export interface IComputeOptionsMemory {
+}
+
 export interface IEditorOption<K1 extends EditorOption, V> {
 	readonly id: K1;
 	readonly name: string;
@@ -1756,6 +1763,7 @@ export interface EditorLayoutInfo {
  * @internal
  */
 export interface EditorLayoutInfoComputerEnv {
+	memory: IComputeOptionsMemory | null;
 	outerWidth: number;
 	outerHeight: number;
 	lineHeight: number;
@@ -1780,6 +1788,7 @@ export class EditorLayoutInfoComputer extends ComputedEditorOption<EditorOption.
 
 	public compute(env: IEnvironmentalOptions, options: IComputedEditorOptions, _: EditorLayoutInfo): EditorLayoutInfo {
 		return EditorLayoutInfoComputer.computeLayout(options, {
+			memory: env.memory,
 			outerWidth: env.outerWidth,
 			outerHeight: env.outerHeight,
 			lineHeight: env.fontInfo.lineHeight,

src/vs/editor/test/common/viewLayout/editorLayoutProvider.test.ts

@@ -77,6 +77,7 @@ suite('Editor ViewLayout - EditorLayoutProvider', () => {
 		options._write(EditorOption.lineNumbers, lineNumbersOptions);
 
 		const actual = EditorLayoutInfoComputer.computeLayout(options, {
+			memory: null,
 			outerWidth: input.outerWidth,
 			outerHeight: input.outerHeight,
 			lineHeight: input.lineHeight,