Multi compile java9

jOOR/src/main/java/org/joor/CompilationUnit.java

@@ -0,0 +1,88 @@
+/*
+ * 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 org.joor;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Unit for holding multiple source files to be compiled in one go.
+ */
+public class CompilationUnit {
+
+    private final Map<String, String> files = new LinkedHashMap<>();
+
+    /**
+     * The result of the compilation that holds mapping for each className -> class.
+     */
+    public static class Result {
+        private final Map<String, Class<?>> classes = new LinkedHashMap<>();
+
+        void addResult(String className, Class<?> clazz) {
+            classes.put(className, clazz);
+        }
+
+        /**
+         * Gets the compiled class by its class name
+         *
+         * @param className the class name
+         * @return the compiled class
+         */
+        public Class<?> getClass(String className) {
+            return classes.get(className);
+        }
+
+        /**
+         * Number of classes in the result
+         */
+        public int size() {
+            return classes.size();
+        }
+
+        /**
+         * Set of the classes by their names
+         */
+        public Set<String> getClassNames() {
+            return classes.keySet();
+        }
+
+    }
+
+    static CompilationUnit.Result result() {
+        return new Result();
+    }
+
+    /**
+     * Creates a new compilation unit for holding input files.
+     */
+    public static CompilationUnit input() {
+        return new CompilationUnit();
+    }
+
+    /**
+     * Adds input to the compilation unit.
+     *
+     * @param className  the class name
+     * @param content    the source code for the class
+     */
+    public CompilationUnit addClass(String className, String content) {
+        files.put(className, content);
+        return this;
+    }
+
+    Map<String, String> getInput() {
+        return files;
+    }
+}