Reintroduced workspace config

plugins/org.eclipse.xtext/src/org/eclipse/xtext/resource/persistence/ResourceStorageFacade.xtend

@@ -111,7 +111,7 @@ class ResourceStorageFacade implements IResourceStorageFacade {
 		}
 		
 		// check for source project locations, i.e. use generator config
-		val fsa = getFileSystemAccess(resource);
+		val fsa = getFileSystemAccess(resource)
 		val outputRelativePath = computeOutputPath(resource)
 		val uri = fsa.getURI(outputRelativePath)
 		return uri !== null && resource.resourceSet.URIConverter.exists(uri, null)

plugins/org.eclipse.xtext/src/org/eclipse/xtext/workspace/FileWorkspaceConfig.xtend

@@ -14,6 +14,7 @@ import org.eclipse.xtend.lib.annotations.FinalFieldsConstructor
 
 import static extension org.eclipse.xtext.util.UriUtil.*
 import org.eclipse.xtext.util.UriUtil
+import org.eclipse.xtend.lib.annotations.Data
 
 @FinalFieldsConstructor
 class FileProjectConfig implements IProjectConfig {
@@ -62,6 +63,10 @@ class FileProjectConfig implements IProjectConfig {
 	override toString() {
 		'''Project «name» («path»)'''
 	}
+	
+	override getWorkspaceConfig() {
+		return new SingleProjectWorkspaceConfig(this)
+	}
 
 }
 
@@ -93,4 +98,25 @@ class FileSourceFolder implements ISourceFolder {
 		'''«name» («path»)'''
 	}
 	
+}
+
+@Data
+class SingleProjectWorkspaceConfig implements IWorkspaceConfig {
+	
+	IProjectConfig projectConfig
+	
+	override findProjectByName(String name) {
+		if (projectConfig.name == name)
+			return projectConfig
+	}
+	
+	override findProjectContaining(URI member) {
+		if (projectConfig.path.isPrefixOf(member))
+			return projectConfig
+	}
+	
+	override getProjects() {
+		return #{projectConfig}
+	}
+	
 }

plugins/org.eclipse.xtext/src/org/eclipse/xtext/workspace/IProjectConfig.java

@@ -31,4 +31,9 @@ public interface IProjectConfig {
 	 * Finds the source folder that physically contains this member or null if none was found.
 	 */
 	ISourceFolder findSourceFolderContaining(URI member);
+	
+	/**
+	 * @return the workspace config
+	 */
+	IWorkspaceConfig getWorkspaceConfig();
 }

plugins/org.eclipse.xtext/src/org/eclipse/xtext/workspace/IWorkspaceConfig.java

@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2015 itemis AG (http://www.itemis.eu) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *******************************************************************************/
+package org.eclipse.xtext.workspace;
+
+import java.util.Set;
+
+import org.eclipse.emf.common.util.URI;
+
+public interface IWorkspaceConfig {
+	
+	/**
+	 * @return the set of projects belonging to the current workspace. Note that these are usually only populated in the context of an IDE.
+	 */
+	Set<? extends IProjectConfig> getProjects();
+	
+	/**
+	 * @return the project whose source folders physically contain this member or null if none was found
+	 */
+	IProjectConfig findProjectContaining(URI member);
+
+	/**
+	 * @return the project with the given name or null if none was found
+	 */
+	IProjectConfig findProjectByName(String name);
+}