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71 lines
2.2 KiB
71 lines
2.2 KiB
/* BreakBlock (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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*
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*/
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public class BreakBlock extends StructuredBlock {
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StructuredBlock breaksBlock;
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String label;
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public BreakBlock(BreakableBlock breaksBlock, boolean needsLabel) {
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this.breaksBlock = breaksBlock;
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breaksBlock.mayChangeJump = false;
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if (needsLabel)
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label = breaksBlock.getLabel();
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else
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label = null;
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}
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public void checkConsistent() {
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super.checkConsistent();
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StructuredBlock sb = outer;
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while (sb != breaksBlock) {
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if (sb == null)
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throw new RuntimeException("Inconsistency");
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sb = sb.outer;
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}
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}
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/**
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* Returns the block where the control will normally flow to, when
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* this block is finished.
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*/
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public StructuredBlock getNextBlock() {
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return breaksBlock.getNextBlock();
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}
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/**
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* Returns the flow block where the control will normally flow to,
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* when this block is finished (not ignoring the jump after this
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* block).
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* @return null, if the control flows into a non empty structured
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* block or if this is the outermost block.
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*/
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public FlowBlock getNextFlowBlock() {
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return breaksBlock.getNextFlowBlock();
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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("break"+(label == null ? "" : " "+label) + ";");
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}
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}
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