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langtools/src/share/classes/javax/tools/StandardLocation.java

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+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.tools;
+
+import javax.tools.JavaFileManager.Location;
+
+import java.io.File;
+import java.util.*;
+import java.util.concurrent.*;
+
+/**
+ * Standard locations of file objects.
+ *
+ * @author Peter von der Ahé
+ * @since 1.6
+ */
+public enum StandardLocation implements Location {
+
+    /**
+     * Location of new class files.
+     */
+    CLASS_OUTPUT,
+
+    /**
+     * Location of new source files.
+     */
+    SOURCE_OUTPUT,
+
+    /**
+     * Location to search for user class files.
+     */
+    CLASS_PATH,
+
+    /**
+     * Location to search for existing source files.
+     */
+    SOURCE_PATH,
+
+    /**
+     * Location to search for annotation processors.
+     */
+    ANNOTATION_PROCESSOR_PATH,
+
+    /**
+     * Location to search for platform classes.  Sometimes called
+     * the boot class path.
+     */
+    PLATFORM_CLASS_PATH;
+
+    /**
+     * Gets a location object with the given name.  The following
+     * property must hold: {@code locationFor(x) ==
+     * locationFor(y)} if and only if {@code x.equals(y)}.
+     * The returned location will be an output location if and only if
+     * name ends with {@code "_OUTPUT"}.
+     *
+     * @param name a name
+     * @return a location
+     */
+    public static Location locationFor(final String name) {
+        if (locations.isEmpty()) {
+            // can't use valueOf which throws IllegalArgumentException
+            for (Location location : values())
+                locations.putIfAbsent(location.getName(), location);
+        }
+        locations.putIfAbsent(name.toString(/* null-check */), new Location() {
+                public String getName() { return name; }
+                public boolean isOutputLocation() { return name.endsWith("_OUTPUT"); }
+            });
+        return locations.get(name);
+    }
+    //where
+        private static ConcurrentMap<String,Location> locations
+            = new ConcurrentHashMap<String,Location>();
+
+    public String getName() { return name(); }
+
+    public boolean isOutputLocation() {
+        return this == CLASS_OUTPUT || this == SOURCE_OUTPUT;
+    }
+}