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mirror of https://github.com/laurent22/joplin.git synced 2024-12-21 09:38:01 +02:00
joplin/packages/lib/services/contextkey/contextkey.ts
2020-11-05 16:58:23 +00:00

1177 lines
29 KiB
TypeScript

/* eslint-disable */
// Note: This is taken from the VScode source code, which has a nicely self-contained
// way to parse an expression (which they call "when-clause") and return a boolean.
//
// Taken from:
// https://github.com/microsoft/vscode/blob/dfa980ebdad245a60b217de7468bc8ced953c906/src/vs/platform/contextkey/common/contextkey.ts
//
// With minor changes to make it work without the VSCode imports.
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
// -----------------------------------------
// JOPLINMOD START
// -----------------------------------------
// import { Event } from 'vs/base/common/event';
// import { isFalsyOrWhitespace } from 'vs/base/common/strings';
// import { createDecorator } from 'vs/platform/instantiation/common/instantiation';
// import { isMacintosh, isLinux, isWindows, isWeb } from 'vs/base/common/platform';
import shim from '../../shim';
const isMacintosh = shim.isMac();
const isLinux = shim.isLinux();
const isWindows = shim.isWindows();
const isWeb = false;
function isFalsyOrWhitespace(str: string | undefined): boolean {
if (!str || typeof str !== 'string') {
return true;
}
return str.trim().length === 0;
}
// -----------------------------------------
// JOPLINMOD END
// -----------------------------------------
const STATIC_VALUES = new Map<string, boolean>();
STATIC_VALUES.set('false', false);
STATIC_VALUES.set('true', true);
STATIC_VALUES.set('isMac', isMacintosh);
STATIC_VALUES.set('isLinux', isLinux);
STATIC_VALUES.set('isWindows', isWindows);
STATIC_VALUES.set('isWeb', isWeb);
STATIC_VALUES.set('isMacNative', isMacintosh && !isWeb);
const hasOwnProperty = Object.prototype.hasOwnProperty;
export const enum ContextKeyExprType {
False = 0,
True = 1,
Defined = 2,
Not = 3,
Equals = 4,
NotEquals = 5,
And = 6,
Regex = 7,
NotRegex = 8,
Or = 9,
In = 10,
NotIn = 11,
}
export interface IContextKeyExprMapper {
mapDefined(key: string): ContextKeyExpression;
mapNot(key: string): ContextKeyExpression;
mapEquals(key: string, value: any): ContextKeyExpression;
mapNotEquals(key: string, value: any): ContextKeyExpression;
mapRegex(key: string, regexp: RegExp | null): ContextKeyRegexExpr;
mapIn(key: string, valueKey: string): ContextKeyInExpr;
}
export interface IContextKeyExpression {
cmp(other: ContextKeyExpression): number;
equals(other: ContextKeyExpression): boolean;
evaluate(context: IContext): boolean;
serialize(): string;
keys(): string[];
map(mapFnc: IContextKeyExprMapper): ContextKeyExpression;
negate(): ContextKeyExpression;
}
export type ContextKeyExpression = (
ContextKeyFalseExpr | ContextKeyTrueExpr | ContextKeyDefinedExpr | ContextKeyNotExpr
| ContextKeyEqualsExpr | ContextKeyNotEqualsExpr | ContextKeyRegexExpr
| ContextKeyNotRegexExpr | ContextKeyAndExpr | ContextKeyOrExpr | ContextKeyInExpr | ContextKeyNotInExpr
);
export abstract class ContextKeyExpr {
public static false(): ContextKeyExpression {
return ContextKeyFalseExpr.INSTANCE;
}
public static true(): ContextKeyExpression {
return ContextKeyTrueExpr.INSTANCE;
}
public static has(key: string): ContextKeyExpression {
return ContextKeyDefinedExpr.create(key);
}
public static equals(key: string, value: any): ContextKeyExpression {
return ContextKeyEqualsExpr.create(key, value);
}
public static notEquals(key: string, value: any): ContextKeyExpression {
return ContextKeyNotEqualsExpr.create(key, value);
}
public static regex(key: string, value: RegExp): ContextKeyExpression {
return ContextKeyRegexExpr.create(key, value);
}
public static in(key: string, value: string): ContextKeyExpression {
return ContextKeyInExpr.create(key, value);
}
public static not(key: string): ContextKeyExpression {
return ContextKeyNotExpr.create(key);
}
public static and(...expr: Array<ContextKeyExpression | undefined | null>): ContextKeyExpression | undefined {
return ContextKeyAndExpr.create(expr);
}
public static or(...expr: Array<ContextKeyExpression | undefined | null>): ContextKeyExpression | undefined {
return ContextKeyOrExpr.create(expr);
}
public static deserialize(serialized: string | null | undefined, strict: boolean = false): ContextKeyExpression | undefined {
if (!serialized) {
return undefined;
}
return this._deserializeOrExpression(serialized, strict);
}
private static _deserializeOrExpression(serialized: string, strict: boolean): ContextKeyExpression | undefined {
let pieces = serialized.split('||');
return ContextKeyOrExpr.create(pieces.map(p => this._deserializeAndExpression(p, strict)));
}
private static _deserializeAndExpression(serialized: string, strict: boolean): ContextKeyExpression | undefined {
let pieces = serialized.split('&&');
return ContextKeyAndExpr.create(pieces.map(p => this._deserializeOne(p, strict)));
}
private static _deserializeOne(serializedOne: string, strict: boolean): ContextKeyExpression {
serializedOne = serializedOne.trim();
if (serializedOne.indexOf('!=') >= 0) {
let pieces = serializedOne.split('!=');
return ContextKeyNotEqualsExpr.create(pieces[0].trim(), this._deserializeValue(pieces[1], strict));
}
if (serializedOne.indexOf('==') >= 0) {
let pieces = serializedOne.split('==');
return ContextKeyEqualsExpr.create(pieces[0].trim(), this._deserializeValue(pieces[1], strict));
}
if (serializedOne.indexOf('=~') >= 0) {
let pieces = serializedOne.split('=~');
return ContextKeyRegexExpr.create(pieces[0].trim(), this._deserializeRegexValue(pieces[1], strict));
}
if (serializedOne.indexOf(' in ') >= 0) {
let pieces = serializedOne.split(' in ');
return ContextKeyInExpr.create(pieces[0].trim(), pieces[1].trim());
}
if (/^\!\s*/.test(serializedOne)) {
return ContextKeyNotExpr.create(serializedOne.substr(1).trim());
}
return ContextKeyDefinedExpr.create(serializedOne);
}
private static _deserializeValue(serializedValue: string, _strict: boolean): any {
serializedValue = serializedValue.trim();
if (serializedValue === 'true') {
return true;
}
if (serializedValue === 'false') {
return false;
}
let m = /^'([^']*)'$/.exec(serializedValue);
if (m) {
return m[1].trim();
}
return serializedValue;
}
private static _deserializeRegexValue(serializedValue: string, strict: boolean): RegExp | null {
if (isFalsyOrWhitespace(serializedValue)) {
if (strict) {
throw new Error('missing regexp-value for =~-expression');
} else {
console.warn('missing regexp-value for =~-expression');
}
return null;
}
let start = serializedValue.indexOf('/');
let end = serializedValue.lastIndexOf('/');
if (start === end || start < 0 /* || to < 0 */) {
if (strict) {
throw new Error(`bad regexp-value '${serializedValue}', missing /-enclosure`);
} else {
console.warn(`bad regexp-value '${serializedValue}', missing /-enclosure`);
}
return null;
}
let value = serializedValue.slice(start + 1, end);
let caseIgnoreFlag = serializedValue[end + 1] === 'i' ? 'i' : '';
try {
return new RegExp(value, caseIgnoreFlag);
} catch (e) {
if (strict) {
throw new Error(`bad regexp-value '${serializedValue}', parse error: ${e}`);
} else {
console.warn(`bad regexp-value '${serializedValue}', parse error: ${e}`);
}
return null;
}
}
}
function cmp(a: ContextKeyExpression, b: ContextKeyExpression): number {
return a.cmp(b);
}
export class ContextKeyFalseExpr implements IContextKeyExpression {
public static INSTANCE = new ContextKeyFalseExpr();
public readonly type = ContextKeyExprType.False;
protected constructor() {
}
public cmp(other: ContextKeyExpression): number {
return this.type - other.type;
}
public equals(other: ContextKeyExpression): boolean {
return (other.type === this.type);
}
public evaluate(_context: IContext): boolean {
return false;
}
public serialize(): string {
return 'false';
}
public keys(): string[] {
return [];
}
public map(_mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return this;
}
public negate(): ContextKeyExpression {
return ContextKeyTrueExpr.INSTANCE;
}
}
export class ContextKeyTrueExpr implements IContextKeyExpression {
public static INSTANCE = new ContextKeyTrueExpr();
public readonly type = ContextKeyExprType.True;
protected constructor() {
}
public cmp(other: ContextKeyExpression): number {
return this.type - other.type;
}
public equals(other: ContextKeyExpression): boolean {
return (other.type === this.type);
}
public evaluate(_context: IContext): boolean {
return true;
}
public serialize(): string {
return 'true';
}
public keys(): string[] {
return [];
}
public map(_mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return this;
}
public negate(): ContextKeyExpression {
return ContextKeyFalseExpr.INSTANCE;
}
}
export class ContextKeyDefinedExpr implements IContextKeyExpression {
public static create(key: string): ContextKeyExpression {
const staticValue = STATIC_VALUES.get(key);
if (typeof staticValue === 'boolean') {
return staticValue ? ContextKeyTrueExpr.INSTANCE : ContextKeyFalseExpr.INSTANCE;
}
return new ContextKeyDefinedExpr(key);
}
public readonly type = ContextKeyExprType.Defined;
protected constructor(protected readonly key: string) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return (this.key === other.key);
}
return false;
}
public evaluate(context: IContext): boolean {
return (!!context.getValue(this.key));
}
public serialize(): string {
return this.key;
}
public keys(): string[] {
return [this.key];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return mapFnc.mapDefined(this.key);
}
public negate(): ContextKeyExpression {
return ContextKeyNotExpr.create(this.key);
}
}
export class ContextKeyEqualsExpr implements IContextKeyExpression {
public static create(key: string, value: any): ContextKeyExpression {
if (typeof value === 'boolean') {
return (value ? ContextKeyDefinedExpr.create(key) : ContextKeyNotExpr.create(key));
}
const staticValue = STATIC_VALUES.get(key);
if (typeof staticValue === 'boolean') {
const trueValue = staticValue ? 'true' : 'false';
return (value === trueValue ? ContextKeyTrueExpr.INSTANCE : ContextKeyFalseExpr.INSTANCE);
}
return new ContextKeyEqualsExpr(key, value);
}
public readonly type = ContextKeyExprType.Equals;
private constructor(private readonly key: string, private readonly value: any) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
if (this.value < other.value) {
return -1;
}
if (this.value > other.value) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return (this.key === other.key && this.value === other.value);
}
return false;
}
public evaluate(context: IContext): boolean {
// Intentional ==
// eslint-disable-next-line eqeqeq
return (context.getValue(this.key) == this.value);
}
public serialize(): string {
return this.key + ' == \'' + this.value + '\'';
}
public keys(): string[] {
return [this.key];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return mapFnc.mapEquals(this.key, this.value);
}
public negate(): ContextKeyExpression {
return ContextKeyNotEqualsExpr.create(this.key, this.value);
}
}
export class ContextKeyInExpr implements IContextKeyExpression {
public static create(key: string, valueKey: string): ContextKeyInExpr {
return new ContextKeyInExpr(key, valueKey);
}
public readonly type = ContextKeyExprType.In;
private constructor(private readonly key: string, private readonly valueKey: string) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
if (this.valueKey < other.valueKey) {
return -1;
}
if (this.valueKey > other.valueKey) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return (this.key === other.key && this.valueKey === other.valueKey);
}
return false;
}
public evaluate(context: IContext): boolean {
const source = context.getValue(this.valueKey);
const item = context.getValue(this.key);
if (Array.isArray(source)) {
return (source.indexOf(item) >= 0);
}
if (typeof item === 'string' && typeof source === 'object' && source !== null) {
return hasOwnProperty.call(source, item);
}
return false;
}
public serialize(): string {
return this.key + ' in \'' + this.valueKey + '\'';
}
public keys(): string[] {
return [this.key, this.valueKey];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyInExpr {
return mapFnc.mapIn(this.key, this.valueKey);
}
public negate(): ContextKeyExpression {
return ContextKeyNotInExpr.create(this);
}
}
export class ContextKeyNotInExpr implements IContextKeyExpression {
public static create(actual: ContextKeyInExpr): ContextKeyNotInExpr {
return new ContextKeyNotInExpr(actual);
}
public readonly type = ContextKeyExprType.NotIn;
private constructor(private readonly _actual: ContextKeyInExpr) {
//
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
return this._actual.cmp(other._actual);
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return this._actual.equals(other._actual);
}
return false;
}
public evaluate(context: IContext): boolean {
return !this._actual.evaluate(context);
}
public serialize(): string {
throw new Error('Method not implemented.');
}
public keys(): string[] {
return this._actual.keys();
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return new ContextKeyNotInExpr(this._actual.map(mapFnc));
}
public negate(): ContextKeyExpression {
return this._actual;
}
}
export class ContextKeyNotEqualsExpr implements IContextKeyExpression {
public static create(key: string, value: any): ContextKeyExpression {
if (typeof value === 'boolean') {
if (value) {
return ContextKeyNotExpr.create(key);
}
return ContextKeyDefinedExpr.create(key);
}
const staticValue = STATIC_VALUES.get(key);
if (typeof staticValue === 'boolean') {
const falseValue = staticValue ? 'true' : 'false';
return (value === falseValue ? ContextKeyFalseExpr.INSTANCE : ContextKeyTrueExpr.INSTANCE);
}
return new ContextKeyNotEqualsExpr(key, value);
}
public readonly type = ContextKeyExprType.NotEquals;
private constructor(private readonly key: string, private readonly value: any) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
if (this.value < other.value) {
return -1;
}
if (this.value > other.value) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return (this.key === other.key && this.value === other.value);
}
return false;
}
public evaluate(context: IContext): boolean {
// Intentional !=
// eslint-disable-next-line eqeqeq
return (context.getValue(this.key) != this.value);
}
public serialize(): string {
return this.key + ' != \'' + this.value + '\'';
}
public keys(): string[] {
return [this.key];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return mapFnc.mapNotEquals(this.key, this.value);
}
public negate(): ContextKeyExpression {
return ContextKeyEqualsExpr.create(this.key, this.value);
}
}
export class ContextKeyNotExpr implements IContextKeyExpression {
public static create(key: string): ContextKeyExpression {
const staticValue = STATIC_VALUES.get(key);
if (typeof staticValue === 'boolean') {
return (staticValue ? ContextKeyFalseExpr.INSTANCE : ContextKeyTrueExpr.INSTANCE);
}
return new ContextKeyNotExpr(key);
}
public readonly type = ContextKeyExprType.Not;
private constructor(private readonly key: string) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return (this.key === other.key);
}
return false;
}
public evaluate(context: IContext): boolean {
return (!context.getValue(this.key));
}
public serialize(): string {
return '!' + this.key;
}
public keys(): string[] {
return [this.key];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return mapFnc.mapNot(this.key);
}
public negate(): ContextKeyExpression {
return ContextKeyDefinedExpr.create(this.key);
}
}
export class ContextKeyRegexExpr implements IContextKeyExpression {
public static create(key: string, regexp: RegExp | null): ContextKeyRegexExpr {
return new ContextKeyRegexExpr(key, regexp);
}
public readonly type = ContextKeyExprType.Regex;
private constructor(private readonly key: string, private readonly regexp: RegExp | null) {
//
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.key < other.key) {
return -1;
}
if (this.key > other.key) {
return 1;
}
const thisSource = this.regexp ? this.regexp.source : '';
const otherSource = other.regexp ? other.regexp.source : '';
if (thisSource < otherSource) {
return -1;
}
if (thisSource > otherSource) {
return 1;
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
const thisSource = this.regexp ? this.regexp.source : '';
const otherSource = other.regexp ? other.regexp.source : '';
return (this.key === other.key && thisSource === otherSource);
}
return false;
}
public evaluate(context: IContext): boolean {
let value = context.getValue<any>(this.key);
return this.regexp ? this.regexp.test(value) : false;
}
public serialize(): string {
const value = this.regexp
? `/${this.regexp.source}/${this.regexp.ignoreCase ? 'i' : ''}`
: '/invalid/';
return `${this.key} =~ ${value}`;
}
public keys(): string[] {
return [this.key];
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyRegexExpr {
return mapFnc.mapRegex(this.key, this.regexp);
}
public negate(): ContextKeyExpression {
return ContextKeyNotRegexExpr.create(this);
}
}
export class ContextKeyNotRegexExpr implements IContextKeyExpression {
public static create(actual: ContextKeyRegexExpr): ContextKeyExpression {
return new ContextKeyNotRegexExpr(actual);
}
public readonly type = ContextKeyExprType.NotRegex;
private constructor(private readonly _actual: ContextKeyRegexExpr) {
//
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
return this._actual.cmp(other._actual);
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
return this._actual.equals(other._actual);
}
return false;
}
public evaluate(context: IContext): boolean {
return !this._actual.evaluate(context);
}
public serialize(): string {
throw new Error('Method not implemented.');
}
public keys(): string[] {
return this._actual.keys();
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return new ContextKeyNotRegexExpr(this._actual.map(mapFnc));
}
public negate(): ContextKeyExpression {
return this._actual;
}
}
export class ContextKeyAndExpr implements IContextKeyExpression {
public static create(_expr: ReadonlyArray<ContextKeyExpression | null | undefined>): ContextKeyExpression | undefined {
return ContextKeyAndExpr._normalizeArr(_expr);
}
public readonly type = ContextKeyExprType.And;
private constructor(public readonly expr: ContextKeyExpression[]) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.expr.length < other.expr.length) {
return -1;
}
if (this.expr.length > other.expr.length) {
return 1;
}
for (let i = 0, len = this.expr.length; i < len; i++) {
const r = cmp(this.expr[i], other.expr[i]);
if (r !== 0) {
return r;
}
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
if (this.expr.length !== other.expr.length) {
return false;
}
for (let i = 0, len = this.expr.length; i < len; i++) {
if (!this.expr[i].equals(other.expr[i])) {
return false;
}
}
return true;
}
return false;
}
public evaluate(context: IContext): boolean {
for (let i = 0, len = this.expr.length; i < len; i++) {
if (!this.expr[i].evaluate(context)) {
return false;
}
}
return true;
}
private static _normalizeArr(arr: ReadonlyArray<ContextKeyExpression | null | undefined>): ContextKeyExpression | undefined {
const expr: ContextKeyExpression[] = [];
let hasTrue = false;
for (const e of arr) {
if (!e) {
continue;
}
if (e.type === ContextKeyExprType.True) {
// anything && true ==> anything
hasTrue = true;
continue;
}
if (e.type === ContextKeyExprType.False) {
// anything && false ==> false
return ContextKeyFalseExpr.INSTANCE;
}
if (e.type === ContextKeyExprType.And) {
expr.push(...e.expr);
continue;
}
expr.push(e);
}
if (expr.length === 0 && hasTrue) {
return ContextKeyTrueExpr.INSTANCE;
}
if (expr.length === 0) {
return undefined;
}
if (expr.length === 1) {
return expr[0];
}
expr.sort(cmp);
// We must distribute any OR expression because we don't support parens
// OR extensions will be at the end (due to sorting rules)
while (expr.length > 1) {
const lastElement = expr[expr.length - 1];
if (lastElement.type !== ContextKeyExprType.Or) {
break;
}
// pop the last element
expr.pop();
// pop the second to last element
const secondToLastElement = expr.pop()!;
// distribute `lastElement` over `secondToLastElement`
const resultElement = ContextKeyOrExpr.create(
lastElement.expr.map(el => ContextKeyAndExpr.create([el, secondToLastElement]))
);
if (resultElement) {
expr.push(resultElement);
expr.sort(cmp);
}
}
if (expr.length === 1) {
return expr[0];
}
return new ContextKeyAndExpr(expr);
}
public serialize(): string {
return this.expr.map(e => e.serialize()).join(' && ');
}
public keys(): string[] {
const result: string[] = [];
for (let expr of this.expr) {
result.push(...expr.keys());
}
return result;
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return new ContextKeyAndExpr(this.expr.map(expr => expr.map(mapFnc)));
}
public negate(): ContextKeyExpression {
let result: ContextKeyExpression[] = [];
for (let expr of this.expr) {
result.push(expr.negate());
}
return ContextKeyOrExpr.create(result)!;
}
}
export class ContextKeyOrExpr implements IContextKeyExpression {
public static create(_expr: ReadonlyArray<ContextKeyExpression | null | undefined>): ContextKeyExpression | undefined {
const expr = ContextKeyOrExpr._normalizeArr(_expr);
if (expr.length === 0) {
return undefined;
}
if (expr.length === 1) {
return expr[0];
}
return new ContextKeyOrExpr(expr);
}
public readonly type = ContextKeyExprType.Or;
private constructor(public readonly expr: ContextKeyExpression[]) {
}
public cmp(other: ContextKeyExpression): number {
if (other.type !== this.type) {
return this.type - other.type;
}
if (this.expr.length < other.expr.length) {
return -1;
}
if (this.expr.length > other.expr.length) {
return 1;
}
for (let i = 0, len = this.expr.length; i < len; i++) {
const r = cmp(this.expr[i], other.expr[i]);
if (r !== 0) {
return r;
}
}
return 0;
}
public equals(other: ContextKeyExpression): boolean {
if (other.type === this.type) {
if (this.expr.length !== other.expr.length) {
return false;
}
for (let i = 0, len = this.expr.length; i < len; i++) {
if (!this.expr[i].equals(other.expr[i])) {
return false;
}
}
return true;
}
return false;
}
public evaluate(context: IContext): boolean {
for (let i = 0, len = this.expr.length; i < len; i++) {
if (this.expr[i].evaluate(context)) {
return true;
}
}
return false;
}
private static _normalizeArr(arr: ReadonlyArray<ContextKeyExpression | null | undefined>): ContextKeyExpression[] {
let expr: ContextKeyExpression[] = [];
let hasFalse = false;
if (arr) {
for (let i = 0, len = arr.length; i < len; i++) {
const e = arr[i];
if (!e) {
continue;
}
if (e.type === ContextKeyExprType.False) {
// anything || false ==> anything
hasFalse = true;
continue;
}
if (e.type === ContextKeyExprType.True) {
// anything || true ==> true
return [ContextKeyTrueExpr.INSTANCE];
}
if (e.type === ContextKeyExprType.Or) {
expr = expr.concat(e.expr);
continue;
}
expr.push(e);
}
if (expr.length === 0 && hasFalse) {
return [ContextKeyFalseExpr.INSTANCE];
}
expr.sort(cmp);
}
return expr;
}
public serialize(): string {
return this.expr.map(e => e.serialize()).join(' || ');
}
public keys(): string[] {
const result: string[] = [];
for (let expr of this.expr) {
result.push(...expr.keys());
}
return result;
}
public map(mapFnc: IContextKeyExprMapper): ContextKeyExpression {
return new ContextKeyOrExpr(this.expr.map(expr => expr.map(mapFnc)));
}
public negate(): ContextKeyExpression {
let result: ContextKeyExpression[] = [];
for (let expr of this.expr) {
result.push(expr.negate());
}
const terminals = (node: ContextKeyExpression) => {
if (node.type === ContextKeyExprType.Or) {
return node.expr;
}
return [node];
};
// We don't support parens, so here we distribute the AND over the OR terminals
// We always take the first 2 AND pairs and distribute them
while (result.length > 1) {
const LEFT = result.shift()!;
const RIGHT = result.shift()!;
const all: ContextKeyExpression[] = [];
for (const left of terminals(LEFT)) {
for (const right of terminals(RIGHT)) {
all.push(ContextKeyExpr.and(left, right)!);
}
}
result.unshift(ContextKeyExpr.or(...all)!);
}
return result[0];
}
}
export class RawContextKey<T> extends ContextKeyDefinedExpr {
private readonly _defaultValue: T | undefined;
constructor(key: string, defaultValue: T | undefined) {
super(key);
this._defaultValue = defaultValue;
}
public bindTo(target: IContextKeyService): IContextKey<T> {
return target.createKey(this.key, this._defaultValue);
}
public getValue(target: IContextKeyService): T | undefined {
return target.getContextKeyValue<T>(this.key);
}
public toNegated(): ContextKeyExpression {
return ContextKeyExpr.not(this.key);
}
public isEqualTo(value: string): ContextKeyExpression {
return ContextKeyExpr.equals(this.key, value);
}
public notEqualsTo(value: string): ContextKeyExpression {
return ContextKeyExpr.notEquals(this.key, value);
}
}
export interface IContext {
getValue<T>(key: string): T | undefined;
}
export interface IContextKey<T> {
set(value: T): void;
reset(): void;
get(): T | undefined;
}
export interface IContextKeyServiceTarget {
parentElement: IContextKeyServiceTarget | null;
setAttribute(attr: string, value: string): void;
removeAttribute(attr: string): void;
hasAttribute(attr: string): boolean;
getAttribute(attr: string): string | null;
}
// export const IContextKeyService = createDecorator<IContextKeyService>('contextKeyService');
export interface IReadableSet<T> {
has(value: T): boolean;
}
export interface IContextKeyChangeEvent {
affectsSome(keys: IReadableSet<string>): boolean;
}
export interface IContextKeyService {
readonly _serviceBrand: undefined;
dispose(): void;
// onDidChangeContext: Event<IContextKeyChangeEvent>;
bufferChangeEvents(callback: Function): void;
createKey<T>(key: string, defaultValue: T | undefined): IContextKey<T>;
contextMatchesRules(rules: ContextKeyExpression | undefined): boolean;
getContextKeyValue<T>(key: string): T | undefined;
createScoped(target?: IContextKeyServiceTarget): IContextKeyService;
getContext(target: IContextKeyServiceTarget | null): IContext;
updateParent(parentContextKeyService?: IContextKeyService): void;
}
export const SET_CONTEXT_COMMAND_ID = 'setContext';