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