Package org.objectweb.asm.tree

Examples of org.objectweb.asm.tree.JumpInsnNode

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    MethodNode mn = new MethodNode(ACC_PUBLIC, "checkAndSetF", "(I)V",
        null, null);
    InsnList il = mn.instructions;
    il.add(new VarInsnNode(ILOAD, 1));
    LabelNode label = new LabelNode();
    il.add(new JumpInsnNode(IFLT, label));
    il.add(new VarInsnNode(ALOAD, 0));
    il.add(new VarInsnNode(ILOAD, 1));
    il.add(new FieldInsnNode(PUTFIELD, "pkg/Bean", "f", "I"));
    LabelNode end = new LabelNode();
    il.add(new JumpInsnNode(GOTO, end));
    il.add(label);
    il.add(new FrameNode(F_SAME, 0, null, 0, null));
    il.add(new TypeInsnNode(NEW, "java/lang/IllegalArgumentException"));
    il.add(new InsnNode(DUP));
    il.add(new MethodInsnNode(INVOKESPECIAL,
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        null, null);
    cn.methods.add(mn);
    InsnList il = mn.instructions;
    il.add(new VarInsnNode(ILOAD, 1));
    LabelNode label = new LabelNode();
    il.add(new JumpInsnNode(IFLT, label));
    il.add(new VarInsnNode(ALOAD, 0));
    il.add(new VarInsnNode(ILOAD, 1));
    il.add(new FieldInsnNode(PUTFIELD, "pkg/Bean", "f", "I"));
    LabelNode end = new LabelNode();
    il.add(new JumpInsnNode(GOTO, end));
    il.add(label);
    il.add(new FrameNode(F_SAME, 0, null, 0, null));
    il.add(new TypeInsnNode(NEW, "java/lang/IllegalArgumentException"));
    il.add(new InsnNode(DUP));
    il.add(new MethodInsnNode(INVOKESPECIAL,
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          il.add(new InsnNode(((IInteger)((IConstructor)v).get(0)).intValue()));
        } else if (((IConstructor)v).getName().equals("integer")) {
          il.add(new IntInsnNode(((IInteger)((IConstructor)v).get(0)).intValue(),
                       ((IInteger)((IConstructor)v).get(1)).intValue()));
        } else if (((IConstructor)v).getName().equals("jump")) {
          il.add(new JumpInsnNode(((IInteger)((IConstructor)v).get(0)).intValue(),
                      getLabel(((IInteger)((IConstructor)v).get(1)).intValue())));
        } else if (((IConstructor)v).getName().equals("label")) {
          il.add(getLabel(((IInteger)((IConstructor)v).get(0)).intValue()));
        } else if (((IConstructor)v).getName().equals("lineNumber")) {
          il.add(new LineNumberNode(((IInteger)((IConstructor)v).get(0)).intValue(),
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        writer.write("\n\t\t\t\tinstruction(" + n.getOpcode() + ")");
      } else if (ai instanceof IntInsnNode) {
        IntInsnNode n = ((IntInsnNode)ai);
        writer.write("\n\t\t\t\tinteger(" + n.getOpcode() + ", " + n.operand + ")");
      } else if (ai instanceof JumpInsnNode) {
        JumpInsnNode n = ((JumpInsnNode)ai);
        writer.write("\n\t\t\t\tjump(" + n.getOpcode() + ", " + getLabelIndex(n.label) + ")");
      } else if (ai instanceof LabelNode) {
        LabelNode n = ((LabelNode)ai);
        writer.write("\n\t\t\t\tlabel(" + getLabelIndex(n) + ")");
      } else if (ai instanceof LineNumberNode) {
        LineNumberNode n = ((LineNumberNode)ai);
        writer.write("\n\t\t\t\tlineNumber(" + n.line + ", " + getLabelIndex(n.start) + ")");
      } else if (ai instanceof VarInsnNode) {
        VarInsnNode n = ((VarInsnNode)ai);
        writer.write("\n\t\t\t\tlocalVariable(" + n.getOpcode() + ", " + n.var + ")");
      } else if (ai instanceof LdcInsnNode) {
        LdcInsnNode n = ((LdcInsnNode)ai);
        if (n.cst instanceof String) {
          writer.write("\n\t\t\t\tloadConstantString(\"" + escape((String)n.cst) + "\")");
        } else if (n.cst instanceof Integer) {
          writer.write("\n\t\t\t\tloadConstantInteger(" + n.cst + ")");
        } else if (n.cst instanceof Long) {
          writer.write("\n\t\t\t\tloadConstantLong(" + n.cst + ")");
        } else if (n.cst instanceof Float) {
          writer.write("\n\t\t\t\tloadConstantFloat(" + n.cst + ")");
        } else if (n.cst instanceof Double) {
          writer.write("\n\t\t\t\tloadConstantDouble(" + n.cst + ")");
        }
      } else if (ai instanceof LookupSwitchInsnNode) {
        LookupSwitchInsnNode n = ((LookupSwitchInsnNode)ai);
        writer.write("\n\t\t\t\tlookupSwitch(" + getLabelIndex(n.dflt) + ", [");
        boolean firstKey = true;
        for (Integer k : (List<Integer>)n.keys) {
          if (firstKey) { firstKey = false; } else { writer.write(", "); }
          writer.write(k);
        }
        writer.write("], [");
        boolean firstCase = true;
        for (LabelNode l : (List<LabelNode>)n.labels) {
          if (firstCase) { firstCase = false; } else { writer.write(", "); }
          writer.write("" + getLabelIndex(l));
        }
        writer.write("])");
      } else if (ai instanceof MethodInsnNode) {
        MethodInsnNode n = ((MethodInsnNode)ai);
        writer.write("\n\t\t\t\tmethod(" + n.getOpcode() + ", \"" + escape(n.owner) + "\", \"" + escape(n.name) + "\", \"" + escape(n.desc) + "\")");
      } else if (ai instanceof MultiANewArrayInsnNode) {
        MultiANewArrayInsnNode n = ((MultiANewArrayInsnNode)ai);
        writer.write("\n\t\t\t\tmultiANewArray(\"" + escape(n.desc) + "\", " + n.dims + ")");
      } else if (ai instanceof TableSwitchInsnNode) {
        TableSwitchInsnNode n = ((TableSwitchInsnNode)ai);
        writer.write("\n\t\t\t\ttableSwitch(" + n.min + ", " + n.max + ", " + getLabelIndex(n.dflt) + ", [");
        boolean firstCase = true;
        for (LabelNode l : (List<LabelNode>)n.labels) {
          if (firstCase) { firstCase = false; } else { writer.write(", "); }
          writer.write("" + getLabelIndex(l));
        }
        writer.write("])");
      } else if (ai instanceof TypeInsnNode) {
        TypeInsnNode n = ((TypeInsnNode)ai);
        writer.write("\n\t\t\t\t\\type(" + n.getOpcode() + ", \"" + escape(n.desc) + "\")");
      } else {
        if (!(ai instanceof FrameNode)) {
          throw new RuntimeException("Error: Unsupported instruction encountered (" + ai.getClass() + ").");
        }
        first = true;
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          current.init(f).execute(insnNode, interpreter);
          subroutine = subroutine == null ? null : subroutine.copy();
         
          if (insnNode instanceof JumpInsnNode) {
            JumpInsnNode j = (JumpInsnNode)insnNode;
            if (insnOpcode != GOTO && insnOpcode != JSR) {
              merge(insn + 1, current, subroutine);
            }
            if (insnOpcode == JSR) {
              subroutine = new Subroutine(j.label, m.maxLocals, j);
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        LabelNode labelNode4ifeg = new LabelNode();
        InsnList newCode = new InsnList();
        newCode.add(new VarInsnNode(Opcodes.ALOAD, varInsnNode.var));
        newCode.add(new TypeInsnNode(Opcodes.INSTANCEOF, INTERRUPT_EXCEPTION_NAME));
        newCode.add(new JumpInsnNode(Opcodes.IFEQ, labelNode4ifeg));
        newCode.add(new VarInsnNode(Opcodes.ALOAD, varInsnNode.var));
        newCode.add(new TypeInsnNode(Opcodes.CHECKCAST, INTERRUPT_EXCEPTION_NAME));
        newCode.add(new InsnNode(Opcodes.ATHROW));
        newCode.add(labelNode4ifeg);
        m.instructions.insert(insertPoint, newCode);
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//                    preExitInsns(cn, mn, purrSecretIndex));
//            if (  ain.getOpcode() == ATHROW ) {
//                mn.instructions.insert( ain, new JumpInsnNode( GOTO, throwReturnLabel ));
//            }
//           else {
                mn.instructions.insert( ain, new JumpInsnNode( GOTO, okReturnLabel ));
                if ( returnOpcode == null ) {
                    returnOpcode = ain.getOpcode();                   
                }
                else {
                    if ( returnOpcode.intValue() != ain.getOpcode() ) {
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        // iterate backwards up to first instructions
        while ((current = current.getPrevious()) != null) {

            // replace returns with gotos
            if (current.getOpcode() == ARETURN) {
                JumpInsnNode gotoInstruction = new JumpInsnNode(GOTO, lastReturnLabel);
                method.instructions.set(current, gotoInstruction);
                current = gotoInstruction;
            }
        }
    }
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        // iterate backwards up to first instructions
        while ((current = current.getPrevious()) != null) {

            // replace returns with gotos
            if (current.getOpcode() == ARETURN) {
                JumpInsnNode gotoInstruction = new JumpInsnNode(GOTO, lastReturnLabel);
                method.instructions.set(current, gotoInstruction);
                current = gotoInstruction;
            }
        }
    }
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        Subroutine main = new Subroutine(null, m.maxLocals, null);
        List subroutineCalls = new ArrayList();
        Map subroutineHeads = new HashMap();
        findSubroutine(0, main, subroutineCalls);
        while (!subroutineCalls.isEmpty()) {
            JumpInsnNode jsr = (JumpInsnNode) subroutineCalls.remove(0);
            Subroutine sub = (Subroutine) subroutineHeads.get(jsr.label);
            if (sub == null) {
                sub = new Subroutine(jsr.label, m.maxLocals, jsr);
                subroutineHeads.put(jsr.label, sub);
                findSubroutine(insns.indexOf(jsr.label), sub, subroutineCalls);
            } else {
                sub.callers.add(jsr);
            }
        }
        for (int i = 0; i < n; ++i) {
            if (subroutines[i] != null && subroutines[i].start == null) {
                subroutines[i] = null;
            }
        }

        // initializes the data structures for the control flow analysis
        Frame current = newFrame(m.maxLocals, m.maxStack);
        Frame handler = newFrame(m.maxLocals, m.maxStack);
        current.setReturn(interpreter.newValue(Type.getReturnType(m.desc)));
        Type[] args = Type.getArgumentTypes(m.desc);
        int local = 0;
        if ((m.access & ACC_STATIC) == 0) {
            Type ctype = Type.getObjectType(owner);
            current.setLocal(local++, interpreter.newValue(ctype));
        }
        for (int i = 0; i < args.length; ++i) {
            current.setLocal(local++, interpreter.newValue(args[i]));
            if (args[i].getSize() == 2) {
                current.setLocal(local++, interpreter.newValue(null));
            }
        }
        while (local < m.maxLocals) {
            current.setLocal(local++, interpreter.newValue(null));
        }
        merge(0, current, null);

        // control flow analysis
        while (top > 0) {
            int insn = queue[--top];
            Frame f = frames[insn];
            Subroutine subroutine = subroutines[insn];
            queued[insn] = false;

            AbstractInsnNode insnNode = null;
            try {
                insnNode = m.instructions.get(insn);
                int insnOpcode = insnNode.getOpcode();
                int insnType = insnNode.getType();

                if (insnType == AbstractInsnNode.LABEL
                        || insnType == AbstractInsnNode.LINE
                        || insnType == AbstractInsnNode.FRAME)
                {
                    merge(insn + 1, f, subroutine);
                    newControlFlowEdge(insn, insn + 1);
                } else {
                    current.init(f).execute(insnNode, interpreter);
                    subroutine = subroutine == null ? null : subroutine.copy();

                    if (insnNode instanceof JumpInsnNode) {
                        JumpInsnNode j = (JumpInsnNode) insnNode;
                        if (insnOpcode != GOTO && insnOpcode != JSR) {
                            merge(insn + 1, current, subroutine);
                            newControlFlowEdge(insn, insn + 1);
                        }
                        int jump = insns.indexOf(j.label);
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