### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/core/Signature.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/core/Signature.java,v
retrieving revision 1.87
diff -u -r1.87 Signature.java
--- model/org/eclipse/jdt/core/Signature.java	24 Nov 2006 01:32:02 -0000	1.87
+++ model/org/eclipse/jdt/core/Signature.java	26 Apr 2007 15:19:13 -0000
@@ -2495,6 +2495,8 @@
 	}
 	int p = start + 1;
 	int checkpoint = buffer.length();
+	int innerTypeStart = -1;
+	boolean inAnonymousType = false;
 	while (true) {
 		if (p >= string.length) {
 			throw new IllegalArgumentException();
@@ -2527,6 +2529,8 @@
 				}
 				break;
 			 case C_DOLLAR :
+			 	innerTypeStart = buffer.length();
+			 	inAnonymousType = false;
 			 	if (resolved) {
 					// once we hit "$" there are no more package prefixes
 					removePackageQualifiers = false;
@@ -2540,7 +2544,15 @@
 			 	}
 			 	break;
 			 default :
-				buffer.append(c);
+				if (innerTypeStart != -1 && !inAnonymousType && Character.isDigit(c)) {
+					inAnonymousType = true;
+					buffer.setLength(innerTypeStart); // remove '.'
+					buffer.insert(0, "new "); //$NON-NLS-1$
+					buffer.append("(){}"); //$NON-NLS-1$
+				}
+			 	if (!inAnonymousType)
+					buffer.append(c);
+				innerTypeStart = -1;
 		}
 		p++;
 	}
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/SignatureTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/SignatureTests.java,v
retrieving revision 1.43
diff -u -r1.43 SignatureTests.java
--- src/org/eclipse/jdt/core/tests/model/SignatureTests.java	6 Nov 2006 14:20:15 -0000	1.43
+++ src/org/eclipse/jdt/core/tests/model/SignatureTests.java	26 Apr 2007 15:19:14 -0000
@@ -813,6 +813,18 @@
 	assertEquals("Signature#toQualifiedName is not correct3", "",
 			Signature.toQualifiedName(new String[0]));
 }
+
+/*
+ * Ensures that the toString() signature of an anonymous type is correct
+ * (regression test for bug 180713 Anonymous type rendered as number in hover)
+ */
+public void testToStringAnonymousType() {
+	assertEquals(
+		"Signature#toString is not correct", 
+		"new X(){}",
+		Signature.toString("LX$123;"));
+}
+
 /**
  * @see Signature#toString(String)
  */
@@ -1031,6 +1043,17 @@
 		Signature.toString("Lx.y.A$Inner;"));
 }
 
+/*
+ * Ensures that the toString() signature of a member type with a number in its name is correct
+ * (regression test for bug 180713 Anonymous type rendered as number in hover)
+ */
+public void testToStringInnerType2() {
+	assertEquals(
+		"Signature#toString is not correct", 
+		"X.Y1",
+		Signature.toString("LX$Y1;"));
+}
+
 /**
  * @see Signature#getTypeSignatureKind(String)
  */