repackaging: all the file moves

modules/@angular/compiler/src/view_resolver.ts

@@ -0,0 +1,111 @@
+import {Injectable} from 'angular2/src/core/di';
+import {ViewMetadata} from 'angular2/src/core/metadata/view';
+import {ComponentMetadata} from 'angular2/src/core/metadata/directives';
+
+import {Type, stringify, isBlank, isPresent} from 'angular2/src/facade/lang';
+import {BaseException} from 'angular2/src/facade/exceptions';
+import {Map} from 'angular2/src/facade/collection';
+
+import {ReflectorReader} from 'angular2/src/core/reflection/reflector_reader';
+import {reflector} from 'angular2/src/core/reflection/reflection';
+
+/**
+ * Resolves types to {@link ViewMetadata}.
+ */
+@Injectable()
+export class ViewResolver {
+  private _reflector: ReflectorReader;
+
+  /** @internal */
+  _cache = new Map<Type, ViewMetadata>();
+
+  constructor(_reflector?: ReflectorReader) {
+    if (isPresent(_reflector)) {
+      this._reflector = _reflector;
+    } else {
+      this._reflector = reflector;
+    }
+  }
+
+  resolve(component: Type): ViewMetadata {
+    var view = this._cache.get(component);
+
+    if (isBlank(view)) {
+      view = this._resolve(component);
+      this._cache.set(component, view);
+    }
+
+    return view;
+  }
+
+  /** @internal */
+  _resolve(component: Type): ViewMetadata {
+    var compMeta: ComponentMetadata;
+    var viewMeta: ViewMetadata;
+
+    this._reflector.annotations(component).forEach(m => {
+      if (m instanceof ViewMetadata) {
+        viewMeta = m;
+      }
+      if (m instanceof ComponentMetadata) {
+        compMeta = m;
+      }
+    });
+
+    if (isPresent(compMeta)) {
+      if (isBlank(compMeta.template) && isBlank(compMeta.templateUrl) && isBlank(viewMeta)) {
+        throw new BaseException(
+            `Component '${stringify(component)}' must have either 'template' or 'templateUrl' set.`);
+
+      } else if (isPresent(compMeta.template) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("template", component);
+
+      } else if (isPresent(compMeta.templateUrl) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("templateUrl", component);
+
+      } else if (isPresent(compMeta.directives) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("directives", component);
+
+      } else if (isPresent(compMeta.pipes) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("pipes", component);
+
+      } else if (isPresent(compMeta.encapsulation) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("encapsulation", component);
+
+      } else if (isPresent(compMeta.styles) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("styles", component);
+
+      } else if (isPresent(compMeta.styleUrls) && isPresent(viewMeta)) {
+        this._throwMixingViewAndComponent("styleUrls", component);
+
+      } else if (isPresent(viewMeta)) {
+        return viewMeta;
+
+      } else {
+        return new ViewMetadata({
+          templateUrl: compMeta.templateUrl,
+          template: compMeta.template,
+          directives: compMeta.directives,
+          pipes: compMeta.pipes,
+          encapsulation: compMeta.encapsulation,
+          styles: compMeta.styles,
+          styleUrls: compMeta.styleUrls
+        });
+      }
+    } else {
+      if (isBlank(viewMeta)) {
+        throw new BaseException(
+            `Could not compile '${stringify(component)}' because it is not a component.`);
+      } else {
+        return viewMeta;
+      }
+    }
+    return null;
+  }
+
+  /** @internal */
+  _throwMixingViewAndComponent(propertyName: string, component: Type): void {
+    throw new BaseException(
+        `Component '${stringify(component)}' cannot have both '${propertyName}' and '@View' set at the same time"`);
+  }
+}