Renames the HashingNameGenerator to TinyNameGenerator, and reimplements the hashing version

using a consistent MD5 hash.

Author: UnquietCode

Documentation.java

@@ -117,8 +117,10 @@
 //
 // The `DefaultNameGenerator` implementation will leave names
 // as they are. A more compact form can be achieved by using
-// the `HashedNameGenerator`, which will try to shorten names
-// as much as possible.
+// the `TinyNameGenerator`, which will try to shorten names
+// as much as possible. For more consistent naming the
+// `HashedNameGenerator` can be used, which makes use of the
+// MD5 hashing algorithm.
 	.useCustomNameGenerator(NameGenerator generator)
 
 // Disable the printing of timestamps in the generated source

flapi-runtime/src/main/java/unquietcode/tools/flapi/runtime/BlockInvocationHandler.java

@@ -106,7 +106,7 @@ private Object invokeAndReturn(Method method, Object[] originalArgs, Object prox
 
 	private Object invokeAndReturn(Method method, Object[] originalArgs, Object proxy, MethodInfo info, ChainInfo[] chain) {
 		// Don't use info.chainInfo() directly, since they might not match due
-		// to legacy considerations (will be removed in 1.0).
+		// to legacy considerations (will be removed in 1.0).  TODO remove in 1.0
 
 		final int depth = chain.length;
 

src/main/java/unquietcode/tools/flapi/generator/naming/HashedNameGenerator.java

@@ -17,17 +17,29 @@
 package unquietcode.tools.flapi.generator.naming;
 
 import com.google.common.base.Function;
+import com.google.common.hash.Hashing;
+
+import java.nio.charset.Charset;
 
 /**
- * Name generator implementation which shortens names into
- * smaller strings.
+ * Name generator implementation which shortens method names into
+ * smaller strings, and then hashes the entire class name using
+ * an MD5 hasher. This has the added advantage that, since it is a
+ * consistent hash, if there are no differences between names then
+ * the hash will always be the same.
  *
  * @author Ben Fagin
  * @version 2015-01-14
  */
 public class HashedNameGenerator extends DefaultNameGenerator {
 	private final Function<String, String> methodNameHasher = new Hasher("m");
-	private final Function<String, String> stateNameHasher = new Hasher("S");
+
+	private final Function<String, String> stateNameHasher = new Function<String, String>() {
+		public @Override String apply(String string) {
+			String hashed = Hashing.md5().hashString(string, Charset.forName("UTF-8")).toString();
+			return "S"+hashed;
+		}
+	};
 
 	@Override
 	public String methodName(String methodKey) {

src/main/java/unquietcode/tools/flapi/generator/naming/TinyNameGenerator.java

@@ -0,0 +1,41 @@
+/*********************************************************************
+ Copyright 2015 the Flapi authors
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ********************************************************************/
+
+package unquietcode.tools.flapi.generator.naming;
+
+import com.google.common.base.Function;
+
+/**
+ * Name generator implementation which shortens names into
+ * smaller strings.
+ *
+ * @author Ben Fagin
+ * @version 2015-01-14
+ */
+public class TinyNameGenerator extends DefaultNameGenerator {
+	private final Function<String, String> methodNameHasher = new Hasher("m");
+	private final Function<String, String> stateNameHasher = new Hasher("S");
+
+	@Override
+	public String methodName(String methodKey) {
+		return methodNameHasher.apply(methodKey);
+	}
+
+	@Override
+	public String className(String stateKey) {
+		return stateNameHasher.apply(stateKey);
+	}
+}