Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scenegraph / src / gnu / trove / TIntStack.java

diff --git a/bundles/org.simantics.scenegraph/src/gnu/trove/TIntStack.java b/bundles/org.simantics.scenegraph/src/gnu/trove/TIntStack.java
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+++ b/bundles/org.simantics.scenegraph/src/gnu/trove/TIntStack.java
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+///////////////////////////////////////////////////////////////////////////////
+// Copyright (c) 2001, Eric D. Friedman All Rights Reserved.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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 for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+///////////////////////////////////////////////////////////////////////////////
+
+
+package gnu.trove;
+
+/**
+ * A stack of int primitives, backed by a TIntArrayList.
+ *
+ * @author Eric D. Friedman, Rob Eden
+ * @version $Id: PStack.template,v 1.2 2007/02/28 23:03:57 robeden Exp $
+ */
+
+public class TIntStack {
+
+    /** the list used to hold the stack values. */
+    protected TIntArrayList _list;
+
+    public static final int DEFAULT_CAPACITY = TIntArrayList.DEFAULT_CAPACITY;
+
+    /**
+     * Creates a new <code>TIntStack</code> instance with the default
+     * capacity.
+     */
+    public TIntStack() {
+        this(DEFAULT_CAPACITY);
+    }
+
+    /**
+     * Creates a new <code>TIntStack</code> instance with the
+     * specified capacity.
+     *
+     * @param capacity the initial depth of the stack
+     */
+    public TIntStack(int capacity) {
+        _list = new TIntArrayList(capacity);
+    }
+
+    /**
+     * Pushes the value onto the top of the stack.
+     *
+     * @param val an <code>int</code> value
+     */
+    public void push(int val) {
+        _list.add(val);
+    }
+
+    /**
+     * Removes and returns the value at the top of the stack.
+     *
+     * @return an <code>int</code> value
+     */
+    public int pop() {
+        return _list.remove(_list.size() - 1);
+    }
+
+    /**
+     * Returns the value at the top of the stack.
+     *
+     * @return an <code>int</code> value
+     */
+    public int peek() {
+        return _list.get(_list.size() - 1);
+    }
+
+    /**
+     * Returns the current depth of the stack.
+     */
+    public int size() {
+        return _list.size();
+    }
+
+    /**
+     * Clears the stack, reseting its capacity to the default.
+     */
+    public void clear() {
+        _list.clear(DEFAULT_CAPACITY);
+    }
+
+    /**
+     * Clears the stack without releasing its internal capacity allocation.
+     */
+    public void reset() {
+        _list.reset();
+    }
+
+    /**
+     * Copies the contents of the stack into a native array. Note that this will NOT
+     * pop them out of the stack.
+     *
+     * @return an <code>int[]</code> value
+     */
+    public int[] toNativeArray() {
+        return _list.toNativeArray();
+    }
+
+    /**
+     * Copies a slice of the list into a native array. Note that this will NOT
+     * pop them out of the stack.
+     *
+     * @param dest the array to copy into.
+     */
+    public void toNativeArray(int[] dest) {
+        _list.toNativeArray(dest, 0, size());
+    }
+} // TIntStack