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70 lines
2.2 KiB
70 lines
2.2 KiB
package jode;
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import java.util.Enumeration;
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/** This instruction header represents an break, continue or an
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* if + break/continue statement.
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*/
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public class BreakInstructionHeader extends InstructionHeader {
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boolean conditional;
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String breakLabel;
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/**
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* Creates a new break statement.
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* @param gotoHeader the instruction header whichs contains the
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* (maybe conditonal) goto statement.
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* @param label the label where to break to, may be null.
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* @param isBreak is this a break or a continue.
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*/
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public BreakInstructionHeader(int flowType,
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InstructionHeader gotoHeader,
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String label) {
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super(flowType, gotoHeader.addr, gotoHeader.nextAddr,
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gotoHeader.successors, gotoHeader.outer);
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this.instr = gotoHeader.getInstruction();
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this.conditional = (gotoHeader.flowType == IFGOTO);
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this.breakLabel = label;
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this.movePredecessors(gotoHeader);
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this.successors = gotoHeader.successors;
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for (int i=0; i< successors.length; i++) {
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successors[i].predecessors.removeElement(gotoHeader);
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successors[i].predecessors.addElement(this);
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}
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this.nextInstruction = gotoHeader.nextInstruction;
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if (nextInstruction != null)
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nextInstruction.prevInstruction = this;
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}
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public void dumpSource(TabbedPrintWriter writer)
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throws java.io.IOException
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{
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if (Decompiler.isDebugging) {
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dumpDebugging(writer);
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writer.tab();
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}
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if (needsLabel()) {
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writer.untab();
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writer.println(getLabel()+": ");
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writer.tab();
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}
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if (conditional) {
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writer.println("if ("+instr.toString()+")");
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writer.tab();
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}
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writer.println((flowType == BREAK ? "break" :
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flowType == CONTINUE ? "continue" : "return") +
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(breakLabel != null?" "+breakLabel:"")+";");
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if (conditional)
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writer.untab();
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if (Decompiler.isDebugging)
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writer.untab();
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}
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}
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