[356750] addPath can also take a comma-separated list of paths and

splits it.
This feature is useful for workflows where the list of paths is passed
in as a single argument.

Change-Id: I0b933c18c318487544e29ed5b9e36cf8acd30698
Signed-off-by: Karsten Thoms <karsten.thoms@itemis.de>

plugins/org.eclipse.xtext/src/org/eclipse/xtext/mwe/Reader.java

@@ -70,16 +70,25 @@ public class Reader extends AbstractReader {
 
 	/**
 	 * <p>
-	 * A path pointing to a folder, jar or zip which contains EMF resources.
-	 * </p><p>
-	 * Example use:
+	 * A comma-separated list of paths pointing to a folder, jar or zip which contains EMF resources.
+	 * </p>
+	 * <p>
+	 * Example use (MWE2):
 	 * </p> 
 	 * <code>
-	 * &lt;path value="./foo/bar.jar"/&gt;
+	 * path = "./foo/bar.jar,./src/main/model"
+	 * </code>
+	 * <p>
+	 * Example use (MWE1):
+	 * </p> 
+	 * <code>
+	 * &lt;path value="./foo/bar.jar,./src/main/model"/&gt;
 	 * </code>
 	 */
 	public void addPath(String path) {
-		this.pathes.add(path);
+		for (String p : path.split(",")) {
+			this.pathes.add(p.trim());
+		}
 	}
 
 	public List<String> getPathes() {
@@ -89,8 +98,15 @@ public class Reader extends AbstractReader {
 	/**
 	 * <p>
 	 * Automatically adds all class path entries of the current process (more specifically uses 'java.class.path' system property).
-	 * </p><p>
-	 * Example use:
+	 * </p>
+	 * <p>
+	 * Example use (MWE2):
+	 * </p> 
+	 * <code>
+	 * useJavaClassPath = true
+	 * </code>
+	 * <p>
+	 * Example use (MWE1):
 	 * </p> 
 	 * <code>
 	 * &lt;useJavaClassPath value="true"/&gt;

tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/mwe/ReaderTest.java

@@ -94,9 +94,11 @@ public class ReaderTest extends AbstractReaderTest {
 	@SuppressWarnings("unchecked")
 	@Test public void testShadowingPathes() throws Exception {
 		Reader reader = getReader();
-		reader.addPath(pathTo("shadowingtest/folder 1"));
-		reader.addPath(pathTo("shadowingtest/folder 2"));
-		reader.addPath(pathTo("shadowingtest/folder 3"));
+		// also test adding multiple paths as comma-separated list, see bug#356750
+		reader.addPath(
+			       pathTo("shadowingtest/folder 1")
+			+","  +pathTo("shadowingtest/folder 2")
+			+" , "+pathTo("shadowingtest/folder 3"));
 		reader.addRegister(new IndexTestLanguageStandaloneSetup());
 		SlotEntry entry = createSlotEntry();
 		entry.setType("Entity");