82 lines
3.5 KiB
TypeScript
82 lines
3.5 KiB
TypeScript
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import {TypeMetadata, SourceModule} from './api';
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import {
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ChangeDetectorJITGenerator
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} from 'angular2/src/core/change_detection/change_detection_jit_generator';
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import {createChangeDetectorDefinitions} from './change_definition_factory';
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import {isJsObject, CONST_EXPR} from 'angular2/src/core/facade/lang';
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import {
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ChangeDetectorGenConfig,
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ChangeDetectorDefinition,
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DynamicProtoChangeDetector,
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ChangeDetectionStrategy
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} from 'angular2/src/core/change_detection/change_detection';
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import {TemplateAst} from './template_ast';
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import {Codegen} from 'angular2/src/transform/template_compiler/change_detector_codegen';
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var IS_DART = !isJsObject({});
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const ABSTRACT_CHANGE_DETECTOR = "AbstractChangeDetector";
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const UTIL = "ChangeDetectionUtil";
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const JS_CHANGE_DETECTOR_IMPORTS = CONST_EXPR([
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['angular2/src/core/change_detection/abstract_change_detector', 'acd'],
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['angular2/src/core/change_detection/change_detection_util', 'cdu']
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]);
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const DART_CHANGE_DETECTOR_IMPORTS =
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CONST_EXPR([['angular2/src/core/change_detection/pregen_proto_change_detector', '_gen']]);
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export class ChangeDetectionCompiler {
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constructor(private _genConfig: ChangeDetectorGenConfig) {}
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compileComponentRuntime(componentType: TypeMetadata, strategy: ChangeDetectionStrategy,
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parsedTemplate: TemplateAst[]): Function[] {
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var changeDetectorDefinitions =
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createChangeDetectorDefinitions(componentType, strategy, this._genConfig, parsedTemplate);
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return changeDetectorDefinitions.map(definition =>
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this._createChangeDetectorFactory(definition));
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}
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private _createChangeDetectorFactory(definition: ChangeDetectorDefinition): Function {
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if (IS_DART) {
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var proto = new DynamicProtoChangeDetector(definition);
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return (dispatcher) => proto.instantiate(dispatcher);
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} else {
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// TODO(tbosch): provide a flag in _genConfig whether to allow eval or fall back to dynamic
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// change detection as well!
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return new ChangeDetectorJITGenerator(definition, UTIL, ABSTRACT_CHANGE_DETECTOR).generate();
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}
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}
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compileComponentCodeGen(componentType: TypeMetadata, strategy: ChangeDetectionStrategy,
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parsedTemplate: TemplateAst[]): SourceModule {
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var changeDetectorDefinitions =
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createChangeDetectorDefinitions(componentType, strategy, this._genConfig, parsedTemplate);
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var imports = IS_DART ? DART_CHANGE_DETECTOR_IMPORTS : JS_CHANGE_DETECTOR_IMPORTS;
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var factories = [];
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var sourceParts = changeDetectorDefinitions.map(definition => {
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var codegen: any;
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// TODO(tbosch): move the 2 code generators to the same place, one with .dart and one with .ts
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// suffix
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// and have the same API for calling them!
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if (IS_DART) {
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codegen = new Codegen();
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var className = definition.id;
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codegen.generate(componentType.typeName, className, definition);
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factories.push(`(dispatcher) => new ${className}(dispatcher)`);
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return codegen.toString();
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} else {
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codegen = new ChangeDetectorJITGenerator(definition, `cdu.${UTIL}`,
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`acd.${ABSTRACT_CHANGE_DETECTOR}`);
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factories.push(`function(dispatcher) { return new ${codegen.typeName}(dispatcher); }`);
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return codegen.generateSource();
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}
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});
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sourceParts.push(`var CHANGE_DETECTORS = [ ${factories.join(',')} ];`);
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return new SourceModule(componentType.typeUrl, sourceParts.join('\n'), imports);
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}
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}
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