c7e48350d3
These wrappers are not natively understood by ts2dart. Removing them will improve Dart2JS compilation due to fewer megamorphic calls to List functions. It also makes Angular code more succinct and improves type safety in Angular due to better type inference of the Array component type. This change exposed several bugs in Angular.
67 lines
2.0 KiB
TypeScript
67 lines
2.0 KiB
TypeScript
import {isBlank} from 'angular2/src/facade/lang';
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import {List, ListWrapper} from 'angular2/src/facade/collection';
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import {CompileElement} from './compile_element';
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import {CompileStep} from './compile_step';
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/**
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* Controls the processing order of elements.
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* Right now it only allows to add a parent element.
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*/
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export class CompileControl {
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_currentStepIndex: number = 0;
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_parent: CompileElement = null;
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_results: any[] = null;
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_additionalChildren: any[] = null;
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_ignoreCurrentElement: boolean;
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constructor(public _steps: List<CompileStep>) {}
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// only public so that it can be used by compile_pipeline
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internalProcess(results: any[], startStepIndex, parent: CompileElement, current: CompileElement) {
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this._results = results;
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var previousStepIndex = this._currentStepIndex;
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var previousParent = this._parent;
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this._ignoreCurrentElement = false;
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for (var i = startStepIndex; i < this._steps.length && !this._ignoreCurrentElement; i++) {
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var step = this._steps[i];
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this._parent = parent;
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this._currentStepIndex = i;
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step.process(parent, current, this);
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parent = this._parent;
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}
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if (!this._ignoreCurrentElement) {
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results.push(current);
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}
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this._currentStepIndex = previousStepIndex;
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this._parent = previousParent;
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var localAdditionalChildren = this._additionalChildren;
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this._additionalChildren = null;
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return localAdditionalChildren;
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}
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addParent(newElement: CompileElement) {
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this.internalProcess(this._results, this._currentStepIndex + 1, this._parent, newElement);
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this._parent = newElement;
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}
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addChild(element: CompileElement) {
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if (isBlank(this._additionalChildren)) {
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this._additionalChildren = [];
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}
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this._additionalChildren.push(element);
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}
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/**
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* Ignores the current element.
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*
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* When a step calls `ignoreCurrentElement`, no further steps are executed on the current
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* element and no `CompileElement` is added to the result list.
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*/
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ignoreCurrentElement() { this._ignoreCurrentElement = true; }
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}
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