@angular/core
Version:
Angular - the core framework
111 lines • 10.8 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { devModeEqual } from '../change_detection/change_detection_util';
import { assertDataInRange, assertLessThan, assertNotSame } from '../util/assert';
import { throwErrorIfNoChangesMode } from './errors';
import { getCheckNoChangesMode } from './state';
import { NO_CHANGE } from './tokens';
import { isDifferent } from './util/misc_utils';
// TODO(misko): consider inlining
/**
* Updates binding and returns the value.
* @param {?} lView
* @param {?} bindingIndex
* @param {?} value
* @return {?}
*/
export function updateBinding(lView, bindingIndex, value) {
return lView[bindingIndex] = value;
}
/**
* Gets the current binding value.
* @param {?} lView
* @param {?} bindingIndex
* @return {?}
*/
export function getBinding(lView, bindingIndex) {
ngDevMode && assertDataInRange(lView, bindingIndex);
ngDevMode &&
assertNotSame(lView[bindingIndex], NO_CHANGE, 'Stored value should never be NO_CHANGE.');
return lView[bindingIndex];
}
/**
* Updates binding if changed, then returns whether it was updated.
* @param {?} lView
* @param {?} bindingIndex
* @param {?} value
* @return {?}
*/
export function bindingUpdated(lView, bindingIndex, value) {
ngDevMode && assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');
ngDevMode &&
assertLessThan(bindingIndex, lView.length, `Slot should have been initialized to NO_CHANGE`);
/** @type {?} */
const oldValue = lView[bindingIndex];
if (isDifferent(oldValue, value)) {
if (ngDevMode && getCheckNoChangesMode()) {
// View engine didn't report undefined values as changed on the first checkNoChanges pass
// (before the change detection was run).
/** @type {?} */
const oldValueToCompare = oldValue !== NO_CHANGE ? oldValue : undefined;
if (!devModeEqual(oldValueToCompare, value)) {
throwErrorIfNoChangesMode(oldValue === NO_CHANGE, oldValueToCompare, value);
}
}
lView[bindingIndex] = value;
return true;
}
return false;
}
/**
* Updates 2 bindings if changed, then returns whether either was updated.
* @param {?} lView
* @param {?} bindingIndex
* @param {?} exp1
* @param {?} exp2
* @return {?}
*/
export function bindingUpdated2(lView, bindingIndex, exp1, exp2) {
/** @type {?} */
const different = bindingUpdated(lView, bindingIndex, exp1);
return bindingUpdated(lView, bindingIndex + 1, exp2) || different;
}
/**
* Updates 3 bindings if changed, then returns whether any was updated.
* @param {?} lView
* @param {?} bindingIndex
* @param {?} exp1
* @param {?} exp2
* @param {?} exp3
* @return {?}
*/
export function bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) {
/** @type {?} */
const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);
return bindingUpdated(lView, bindingIndex + 2, exp3) || different;
}
/**
* Updates 4 bindings if changed, then returns whether any was updated.
* @param {?} lView
* @param {?} bindingIndex
* @param {?} exp1
* @param {?} exp2
* @param {?} exp3
* @param {?} exp4
* @return {?}
*/
export function bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) {
/** @type {?} */
const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);
return bindingUpdated2(lView, bindingIndex + 2, exp3, exp4) || different;
}
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