Initial revision

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@71 379699f6-c40d-0410-875b-85095c16579e

jode/jode/flow/SpecialBlock.java

@@ -0,0 +1,59 @@
+/* SpecialBlock (c) 1998 Jochen Hoenicke
+ *
+ * You may distribute under the terms of the GNU General Public License.
+ *
+ * IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
+ * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
+ * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE 
+ * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
+ * BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
+ * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * $Id$
+ */
+package jode.flow;
+import jode.TabbedPrintWriter;
+
+/**
+ * This is the structured block for atomic instructions.
+ */
+public class SpecialBlock extends StructuredBlock {
+
+    public static int DUP  = 0;
+    public static int SWAP = 1;
+    private static String[] output = { "DUP", "SWAP" };
+
+    /**
+     * The type, one of DUP or SWAP
+     */
+    int type;
+    /**
+     * The count of stack entries that are transformed. 
+     * This is 1 for swap, and 1 or 2 for dup.
+     */
+    int count;
+    /**
+     * The depth that the dupped element should be put to (0,1 or 2).
+     * For swap this is zero.
+     */
+    int depth;
+
+    public SpecialBlock(int type, int count, int depth, Jump jump) {
+        this.type = type;
+        this.count = count;
+        this.depth = depth;
+        setJump(jump);
+    }
+
+    public void dumpInstruction(TabbedPrintWriter writer) 
+	throws java.io.IOException
+    {
+        writer.println(output[type] 
+                       + ((count == 1) ? "" : "2")
+                       + ((depth == 0) ? "" : "_X"+depth));
+    }
+}