Angular 指令ngTemplateOutlet的运行原理单步调试

/**
 * Creates an LContainer for an ng-template (dynamically-inserted view), e.g.
 *
 * <ng-template #foo>
 *    <div></div>
 * </ng-template>
 *
 * @codeGenApi
 * @param {?} index The index of the container in the data array
 * @param {?} templateFn Inline template
 * @param {?} decls The number of nodes, local refs, and pipes for this template
 * @param {?} vars The number of bindings for this template
 * @param {?=} tagName The name of the container element, if applicable
 * @param {?=} attrsIndex Index of template attributes in the `consts` array.
 * @param {?=} localRefsIndex
 * @param {?=} localRefExtractor A function which extracts local-refs values from the template.
 *        Defaults to the current element associated with the local-ref.
 *
 * @return {?}
 */
function ɵɵtemplate(index, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex, localRefExtractor) {
    /** @type {?} */
    const lView = getLView();
    /** @type {?} */
    const tView = getTView();
    /** @type {?} */
    const adjustedIndex = index + HEADER_OFFSET;
    /** @type {?} */
    const tNode = tView.firstCreatePass ?
        templateFirstCreatePass(index, tView, lView, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex) :
        (/** @type {?} */ (tView.data[adjustedIndex]));
    setPreviousOrParentTNode(tNode, false);
    /** @type {?} */
    const comment = lView[RENDERER].createComment(ngDevMode ? 'container' : '');
    appendChild(tView, lView, comment, tNode);
    attachPatchData(comment, lView);
    addToViewTree(lView, lView[adjustedIndex] = createLContainer(comment, lView, comment, tNode));
    if (isDirectiveHost(tNode)) {
        createDirectivesInstances(tView, lView, tNode);
    }
    if (localRefsIndex != null) {
        saveResolvedLocalsInData(lView, tNode, localRefExtractor);
    }
}

/**
 * @fileoverview added by tsickle
 * Generated from: packages/common/src/directives/ng_template_outlet.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * @ngModule CommonModule
 *
 * @description
 *
 * Inserts an embedded view from a prepared `TemplateRef`.
 *
 * You can attach a context object to the `EmbeddedViewRef` by setting `[ngTemplateOutletContext]`.
 * `[ngTemplateOutletContext]` should be an object, the object's keys will be available for binding
 * by the local template `let` declarations.
 *
 * @usageNotes
 * ```
 * <ng-container *ngTemplateOutlet="templateRefExp; context: contextExp"></ng-container>
 * ```
 *
 * Using the key `$implicit` in the context object will set its value as default.
 *
 * ### Example
 *
 * {@example common/ngTemplateOutlet/ts/module.ts region='NgTemplateOutlet'}
 *
 * @publicApi
 */
class NgTemplateOutlet {
    /**
     * @param {?} _viewContainerRef
     */
    constructor(_viewContainerRef) {
        this._viewContainerRef = _viewContainerRef;
        this._viewRef = null;
        /**
         * A context object to attach to the {@link EmbeddedViewRef}. This should be an
         * object, the object's keys will be available for binding by the local template `let`
         * declarations.
         * Using the key `$implicit` in the context object will set its value as default.
         */
        this.ngTemplateOutletContext = null;
        /**
         * A string defining the template reference and optionally the context object for the template.
         */
        this.ngTemplateOutlet = null;
    }