List of usage examples for org.objectweb.asm.tree AbstractInsnNode LDC_INSN
int LDC_INSN
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From source file:jaspex.transactifier.ChangeClinitMethodVisitor.java
License:Open Source License
private static boolean clinitIsSafe(Type t) { try {/*ww w.j av a2 s .c om*/ ClassReader cr = new ClassReader(t.commonName()); ClassNode cNode = new ClassNode(); cr.accept(cNode, 0); for (MethodNode method : cNode.methods) { if (!method.name.equals("<clinit>")) continue; // Examinar instruces Iterator<AbstractInsnNode> it = method.instructions.iterator(); while (it.hasNext()) { AbstractInsnNode insn = it.next(); switch (insn.getType()) { case AbstractInsnNode.FRAME: case AbstractInsnNode.INT_INSN: case AbstractInsnNode.JUMP_INSN: case AbstractInsnNode.LABEL: case AbstractInsnNode.LDC_INSN: case AbstractInsnNode.LINE: case AbstractInsnNode.LOOKUPSWITCH_INSN: case AbstractInsnNode.MULTIANEWARRAY_INSN: case AbstractInsnNode.TABLESWITCH_INSN: case AbstractInsnNode.TYPE_INSN: case AbstractInsnNode.VAR_INSN: break; case AbstractInsnNode.FIELD_INSN: FieldInsnNode fieldInsn = (FieldInsnNode) insn; if (fieldInsn.getOpcode() != PUTSTATIC) { // GETSTATIC, GETFIELD, PUTFIELD return false; } break; case AbstractInsnNode.IINC_INSN: return false; case AbstractInsnNode.INSN: if (unsafeInsnBytecodes.contains(insn.getOpcode())) { Log.debug(t.commonName() + ".<clinit>() is unsafe " + "because of bytecode " + insn.getOpcode()); return false; } break; case AbstractInsnNode.METHOD_INSN: MethodInsnNode methodInsn = (MethodInsnNode) insn; if (!ClassFilter.isMethodWhitelisted(Type.fromAsm(methodInsn.owner), methodInsn.name, methodInsn.desc)) { Log.debug(t.commonName() + ".<clinit>() is unsafe " + "because it invokes " + Type.fromAsm(methodInsn.owner).commonName() + "." + methodInsn.name); return false; } break; default: throw new Error("Unexpected bytecode " + insn); } } //Log.debug(t.commonName() + ".<clinit>() for " + t + " is safe"); return true; } return false; } catch (IOException e) { throw new Error(e); } }
From source file:org.lambdamatic.analyzer.ast.LambdaExpressionReader.java
License:Open Source License
/** * Reads the bytecode from the given {@link InsnCursor}'s <strong>current position</strong>, until * there is no further instruction to proceed. It is the responsability of the caller to set the * cursor position./* ww w . j av a 2 s.co m*/ * * @param insnCursor the instruction cursor used to read the bytecode. * @param expressionStack the expression stack to put on or pop from. * @param localVariables the local variables * @return a {@link List} of {@link Statement} containing the {@link Statement} */ private List<Statement> readStatements(final InsnCursor insnCursor, final Stack<Expression> expressionStack, final List<CapturedArgument> capturedArguments, final LocalVariables localVariables) { final List<Statement> statements = new ArrayList<>(); while (insnCursor.hasCurrent()) { final AbstractInsnNode currentInstruction = insnCursor.getCurrent(); switch (currentInstruction.getType()) { case AbstractInsnNode.VAR_INSN: final VarInsnNode varInstruction = (VarInsnNode) currentInstruction; switch (currentInstruction.getOpcode()) { // load a reference onto the stack from a local variable case Opcodes.ALOAD: case Opcodes.ILOAD: // load an int value from a local variable // Note: The 'var' operand is the index of a local variable // all captured arguments come before the local variable in the method signature, // which means that the local variables table is empty on the first slots which are // "allocated" // for the captured arguments. if (varInstruction.var < capturedArguments.size()) { // if the variable index matches a captured argument // note: not using actual captured argument but rather, use a _reference_ to it. final Object capturedArgumentValue = capturedArguments.get(varInstruction.var).getValue(); final Class<?> capturedArgumentValueType = capturedArgumentValue != null ? capturedArgumentValue.getClass() : Object.class; final CapturedArgumentRef capturedArgumentRef = new CapturedArgumentRef(varInstruction.var, capturedArgumentValueType); expressionStack.add(capturedArgumentRef); } else { // the variable index matches a local variable final LocalVariableNode var = localVariables.load(varInstruction.var); expressionStack.add(new LocalVariable(var.index, var.name, readSignature(var.desc))); } break; case Opcodes.ASTORE: // store a reference into a local variable localVariables.store(varInstruction.var); break; default: throw new AnalyzeException( "Unexpected Variable instruction code: " + varInstruction.getOpcode()); } break; case AbstractInsnNode.LDC_INSN: // let's move this instruction on top of the stack until it // is used as an argument during a method call final LdcInsnNode ldcInsnNode = (LdcInsnNode) currentInstruction; final Expression constant = ExpressionFactory.getExpression(ldcInsnNode.cst); LOGGER.trace("Stacking constant {}", constant); expressionStack.add(constant); break; case AbstractInsnNode.FIELD_INSN: final FieldInsnNode fieldInsnNode = (FieldInsnNode) currentInstruction; switch (fieldInsnNode.getOpcode()) { case Opcodes.GETSTATIC: final Type ownerType = Type.getType(fieldInsnNode.desc); final FieldAccess staticFieldAccess = new FieldAccess(new ClassLiteral(getType(ownerType)), fieldInsnNode.name); expressionStack.add(staticFieldAccess); break; case Opcodes.GETFIELD: final Expression fieldAccessParent = expressionStack.pop(); final FieldAccess fieldAccess = new FieldAccess(fieldAccessParent, fieldInsnNode.name); expressionStack.add(fieldAccess); break; case Opcodes.PUTFIELD: final Expression fieldAssignationValue = expressionStack.pop(); final Expression parentSource = expressionStack.pop(); final FieldAccess source = new FieldAccess(parentSource, fieldInsnNode.name); final Assignment assignmentExpression = new Assignment(source, fieldAssignationValue); statements.add(new ExpressionStatement(assignmentExpression)); break; default: throw new AnalyzeException("Unexpected field instruction type: " + fieldInsnNode.getOpcode()); } break; case AbstractInsnNode.METHOD_INSN: final MethodInsnNode methodInsnNode = (MethodInsnNode) currentInstruction; final Type[] argumentTypes = Type.getArgumentTypes(methodInsnNode.desc); final List<Expression> args = new ArrayList<>(); final List<Class<?>> parameterTypes = new ArrayList<>(); Stream.of(argumentTypes).forEach(argumentType -> { final Expression arg = expressionStack.pop(); final String argumentClassName = argumentType.getClassName(); args.add(castOperand(arg, argumentClassName)); try { parameterTypes.add(ClassUtils.getClass(argumentClassName)); } catch (Exception e) { throw new AnalyzeException("Failed to find class '" + argumentClassName + "'", e); } }); // arguments appear in reverse order in the bytecode Collections.reverse(args); switch (methodInsnNode.getOpcode()) { case Opcodes.INVOKEINTERFACE: case Opcodes.INVOKEVIRTUAL: case Opcodes.INVOKESPECIAL: // object instantiation if (methodInsnNode.name.equals("<init>")) { final ObjectInstanciation objectVariable = (ObjectInstanciation) expressionStack.pop(); objectVariable.setInitArguments(args); } else { final Expression sourceExpression = expressionStack.pop(); final Method javaMethod = ReflectionUtils.findJavaMethod(sourceExpression.getJavaType(), methodInsnNode.name, parameterTypes); final Class<?> returnType = findReturnType(insnCursor, javaMethod); final MethodInvocation invokedMethod = new MethodInvocation(sourceExpression, javaMethod, returnType, args); expressionStack.add(invokedMethod); } break; case Opcodes.INVOKESTATIC: final Type type = Type.getObjectType(methodInsnNode.owner); try { final Class<?> sourceClass = Class.forName(type.getClassName()); final Method javaMethod = ReflectionUtils.findJavaMethod(sourceClass, methodInsnNode.name, parameterTypes); final Class<?> returnType = findReturnType(insnCursor, javaMethod); final MethodInvocation invokedStaticMethod = new MethodInvocation( new ClassLiteral(sourceClass), javaMethod, returnType, args); expressionStack.add(invokedStaticMethod); } catch (ClassNotFoundException e) { throw new AnalyzeException("Failed to retrieve class for " + methodInsnNode.owner, e); } break; default: throw new AnalyzeException("Unexpected method invocation type: " + methodInsnNode.getOpcode()); } break; case AbstractInsnNode.INVOKE_DYNAMIC_INSN: final InvokeDynamicInsnNode invokeDynamicInsnNode = (InvokeDynamicInsnNode) currentInstruction; final Handle handle = (Handle) invokeDynamicInsnNode.bsmArgs[1]; final int argNumber = Type.getArgumentTypes(invokeDynamicInsnNode.desc).length; final List<CapturedArgumentRef> lambdaArgs = new ArrayList<>(); for (int i = 0; i < argNumber; i++) { final Expression expr = expressionStack.pop(); if (expr.getExpressionType() != ExpressionType.CAPTURED_ARGUMENT_REF) { throw new AnalyzeException("Unexpected argument type when following InvokeDynamic call: " + expr.getExpressionType()); } lambdaArgs.add((CapturedArgumentRef) expr); // , expr.getValue() } Collections.reverse(lambdaArgs); final EmbeddedSerializedLambdaInfo lambdaInfo = new EmbeddedSerializedLambdaInfo(handle.getOwner(), handle.getName(), handle.getDesc(), lambdaArgs, capturedArguments); final LambdaExpression lambdaExpression = LambdaExpressionAnalyzer.getInstance() .analyzeExpression(lambdaInfo); expressionStack.add(lambdaExpression); break; case AbstractInsnNode.JUMP_INSN: statements.addAll( readJumpInstruction(insnCursor, expressionStack, capturedArguments, localVariables)); return statements; case AbstractInsnNode.INT_INSN: readIntInstruction((IntInsnNode) currentInstruction, expressionStack, localVariables); break; case AbstractInsnNode.INSN: final List<Statement> instructionStatement = readInstruction(insnCursor, expressionStack, capturedArguments, localVariables); statements.addAll(instructionStatement); break; case AbstractInsnNode.TYPE_INSN: readTypeInstruction((TypeInsnNode) currentInstruction, expressionStack, localVariables); break; default: throw new AnalyzeException( "This is embarrassing... We've reached an unexpected instruction operator: " + currentInstruction.getType()); } insnCursor.next(); } return statements; }
From source file:org.mutabilitydetector.checkers.settermethod.AssignmentGuardVerifier.java
License:Apache License
private static UnknownTypeValue getComparativeValue(final AbstractInsnNode insn) { UnknownTypeValue result = null;//www . j ava 2 s . c om if (AbstractInsnNode.INSN == insn.getType()) { final Opcode opcode = Opcode.forInt(insn.getOpcode()); result = opcode.stackValue(); } else if (AbstractInsnNode.LDC_INSN == insn.getType()) { final LdcInsnNode ldcInsn = (LdcInsnNode) insn; result = DefaultUnknownTypeValue.getInstance(ldcInsn.cst); } else if (AbstractInsnNode.INT_INSN == insn.getType()) { final IntInsnNode intInsnNode = (IntInsnNode) insn; result = DefaultUnknownTypeValue.getInstance(intInsnNode.operand); } return result; }
From source file:org.spoofax.interpreter.adapter.asm.ASMFactory.java
License:LGPL
public static IStrategoTerm wrap(AbstractInsnNode node) { if (node == null) return None.INSTANCE; switch (node.getType()) { case AbstractInsnNode.FIELD_INSN: return wrap((FieldInsnNode) node); case AbstractInsnNode.FRAME: return wrap((FrameNode) node); case AbstractInsnNode.IINC_INSN: return wrap((IincInsnNode) node); case AbstractInsnNode.INSN: return wrap((InsnNode) node); case AbstractInsnNode.INT_INSN: return wrap((IntInsnNode) node); case AbstractInsnNode.INVOKE_DYNAMIC_INSN: throw new NotImplementedException(); case AbstractInsnNode.JUMP_INSN: return wrap((JumpInsnNode) node); case AbstractInsnNode.LABEL: return wrap((LabelNode) node); case AbstractInsnNode.LDC_INSN: return wrap((LdcInsnNode) node); case AbstractInsnNode.LINE: return wrap((LineNumberNode) node); case AbstractInsnNode.LOOKUPSWITCH_INSN: return wrap((LookupSwitchInsnNode) node); case AbstractInsnNode.METHOD_INSN: return wrap((MethodInsnNode) node); case AbstractInsnNode.MULTIANEWARRAY_INSN: return wrap((MultiANewArrayInsnNode) node); case AbstractInsnNode.TABLESWITCH_INSN: return wrap((TableSwitchInsnNode) node); case AbstractInsnNode.TYPE_INSN: return wrap((TypeInsnNode) node); case AbstractInsnNode.VAR_INSN: return wrap((VarInsnNode) node); case -1:/*from w w w . j av a 2s.c o m*/ System.err.println("Bogus " + node.getClass().getName()); return None.INSTANCE; default: throw new IllegalArgumentException( "Unknown type " + node.getOpcode() + " for " + node.getClass().getName()); } }
From source file:org.springsource.loaded.TypeDiffComputer.java
License:Apache License
private static boolean sameInstruction(AbstractInsnNode o, AbstractInsnNode n) { if (o.getType() != o.getType() || o.getOpcode() != n.getOpcode()) { return false; }//from w w w . j a va 2 s .c om switch (o.getType()) { case (AbstractInsnNode.INSN): // 0 if (!sameInsnNode(o, n)) { return false; } break; case (AbstractInsnNode.INT_INSN): // 1 if (!sameIntInsnNode(o, n)) { return false; } break; case (AbstractInsnNode.VAR_INSN): // 2 if (!sameVarInsn(o, n)) { return false; } break; case (AbstractInsnNode.TYPE_INSN):// 3 if (!sameTypeInsn(o, n)) { return false; } break; case (AbstractInsnNode.FIELD_INSN): // 4 if (!sameFieldInsn(o, n)) { return false; } break; case (AbstractInsnNode.METHOD_INSN): // 5 if (!sameMethodInsnNode(o, n)) { return false; } break; case (AbstractInsnNode.JUMP_INSN): // 6 if (!sameJumpInsnNode(o, n)) { return false; } break; case (AbstractInsnNode.LABEL): // 7 if (!sameLabelNode(o, n)) { return false; } break; case (AbstractInsnNode.LDC_INSN): // 8 if (!sameLdcInsnNode(o, n)) { return false; } break; case (AbstractInsnNode.IINC_INSN): // 9 if (!sameIincInsn(o, n)) { return false; } break; case (AbstractInsnNode.TABLESWITCH_INSN): // 10 if (!sameTableSwitchInsn(o, n)) { return false; } break; case (AbstractInsnNode.LOOKUPSWITCH_INSN): // 11 if (!sameLookupSwitchInsn(o, n)) { return false; } break; case (AbstractInsnNode.MULTIANEWARRAY_INSN): // 12 if (!sameMultiANewArrayInsn(o, n)) { return false; } break; case (AbstractInsnNode.FRAME): // 13 if (!sameFrameInsn(o, n)) { return false; } break; case (AbstractInsnNode.LINE): // 14 if (!sameLineNumberNode(o, n)) { return false; } break; default: throw new IllegalStateException("nyi " + o.getType()); } return true; }
From source file:pku.sei.checkedcoverage.tracer.instrumentation.TracingMethodInstrumenter.java
License:Creative Commons License
@SuppressWarnings("unchecked") public void transform(final ListIterator<MethodNode> methodIt) { // do not modify abstract or native methods if ((this.methodNode.access & ACC_ABSTRACT) != 0 || (this.methodNode.access & ACC_NATIVE) != 0) return;/*from w w w . j a v a 2s . c o m*/ // check out what labels are jump targets (only these have to be traced) analyze(this.methodNode); this.instructionIterator = new FixedInstructionIterator(this.methodNode.instructions); // in the old method, initialize the new local variable for the threadtracer this.instructionIterator.add(new MethodInsnNode(INVOKESTATIC, Type.getInternalName(Tracer.class), "getInstance", "()L" + Type.getInternalName(Tracer.class) + ";")); this.instructionIterator.add(new MethodInsnNode(INVOKEVIRTUAL, Type.getInternalName(Tracer.class), "getThreadTracer", "()L" + Type.getInternalName(ThreadTracer.class) + ";")); this.instructionIterator.add(new InsnNode(DUP)); this.instructionIterator.add(new VarInsnNode(ASTORE, this.tracerLocalVarIndex)); this.instructionIterator.add( new MethodInsnNode(INVOKEINTERFACE, Type.getInternalName(ThreadTracer.class), "isPaused", "()Z")); final LabelNode noTracingLabel = new LabelNode(); this.instructionIterator.add(new JumpInsnNode(IFNE, noTracingLabel)); // create a copy of the (uninstrumented) instructions (later, while iterating through the instructions) final InsnList oldInstructions = new InsnList(); final Map<LabelNode, LabelNode> labelCopies = LazyMap.decorate(new HashMap<LabelNode, LabelNode>(), new Factory() { @Override public Object create() { return new LabelNode(); } }); // copy the try-catch-blocks final Object[] oldTryCatchblockNodes = this.methodNode.tryCatchBlocks.toArray(); for (final Object o : oldTryCatchblockNodes) { final TryCatchBlockNode tcb = (TryCatchBlockNode) o; final TryCatchBlockNode newTcb = new TryCatchBlockNode(labelCopies.get(tcb.start), labelCopies.get(tcb.end), labelCopies.get(tcb.handler), tcb.type); this.methodNode.tryCatchBlocks.add(newTcb); } // increment number of local variables by one (for the threadtracer) ++this.methodNode.maxLocals; // and increment all local variable indexes after the new one by one for (final Object o : this.methodNode.localVariables) { final LocalVariableNode localVar = (LocalVariableNode) o; if (localVar.index >= this.tracerLocalVarIndex) ++localVar.index; } // store information about local variables in the ReadMethod object List<LocalVariable> localVariables = new ArrayList<LocalVariable>(); for (final Object o : this.methodNode.localVariables) { final LocalVariableNode localVar = (LocalVariableNode) o; while (localVariables.size() <= localVar.index) localVariables.add(null); localVariables.set(localVar.index, new LocalVariable(localVar.index, localVar.name, localVar.desc)); } this.readMethod.setLocalVariables(localVariables.toArray(new LocalVariable[localVariables.size()])); localVariables = null; // each method must start with a (dedicated) label: assert this.readMethod.getInstructions().isEmpty(); traceLabel(null, InstructionType.METHODENTRY); assert this.readMethod.getInstructions().size() == 1 && this.readMethod.getInstructions().get(0) instanceof LabelMarker && ((LabelMarker) this.readMethod.getInstructions().get(0)).isAdditionalLabel(); this.readMethod.setMethodEntryLabel((LabelMarker) this.readMethod.getInstructions().get(0)); // needed later: final LabelNode l0 = new LabelNode(); this.instructionIterator.add(l0); // then, visit the instructions that were in the method before while (this.instructionIterator.hasNext()) { final AbstractInsnNode insnNode = this.instructionIterator.next(); switch (insnNode.getType()) { case AbstractInsnNode.INSN: transformInsn((InsnNode) insnNode); break; case AbstractInsnNode.INT_INSN: transformIntInsn((IntInsnNode) insnNode); break; case AbstractInsnNode.VAR_INSN: transformVarInsn((VarInsnNode) insnNode); break; case AbstractInsnNode.TYPE_INSN: transformTypeInsn((TypeInsnNode) insnNode); break; case AbstractInsnNode.FIELD_INSN: transformFieldInsn((FieldInsnNode) insnNode); break; case AbstractInsnNode.METHOD_INSN: transformMethodInsn((MethodInsnNode) insnNode); break; case AbstractInsnNode.JUMP_INSN: transformJumpInsn((JumpInsnNode) insnNode); break; case AbstractInsnNode.LABEL: transformLabel((LabelNode) insnNode); break; case AbstractInsnNode.LDC_INSN: transformLdcInsn((LdcInsnNode) insnNode); break; case AbstractInsnNode.IINC_INSN: transformIincInsn((IincInsnNode) insnNode); break; case AbstractInsnNode.TABLESWITCH_INSN: transformTableSwitchInsn((TableSwitchInsnNode) insnNode); break; case AbstractInsnNode.LOOKUPSWITCH_INSN: transformLookupSwitchInsn((LookupSwitchInsnNode) insnNode); break; case AbstractInsnNode.MULTIANEWARRAY_INSN: transformMultiANewArrayInsn((MultiANewArrayInsnNode) insnNode); break; case AbstractInsnNode.FRAME: // ignore break; case AbstractInsnNode.LINE: // ignore break; default: throw new RuntimeException("Unknown instruction type " + insnNode.getType() + " (" + insnNode.getClass().getSimpleName() + ")"); } oldInstructions.add(insnNode.clone(labelCopies)); } assert this.outstandingInitializations == 0; // add the (old) try-catch blocks to the readMethods // (can only be done down here since we use the information in the // labels map) for (final Object o : oldTryCatchblockNodes) { final TryCatchBlockNode tcb = (TryCatchBlockNode) o; this.readMethod.addTryCatchBlock(new TryCatchBlock(this.labels.get(tcb.start), this.labels.get(tcb.end), this.labels.get(tcb.handler), tcb.type)); } final LabelNode l1 = new LabelNode(); this.instructionIterator.add(l1); final int newPos = this.readMethod.getInstructions().size(); traceLabel(null, InstructionType.METHODEXIT); assert this.readMethod.getInstructions().size() == newPos + 1; final AbstractInstruction abnormalTerminationLabel = this.readMethod.getInstructions().get(newPos); assert abnormalTerminationLabel instanceof LabelMarker; this.readMethod.setAbnormalTerminationLabel((LabelMarker) abnormalTerminationLabel); this.methodNode.instructions.add(new InsnNode(ATHROW)); // add a try catch block around the method so that we can trace when this method is left // a thrown exception this.methodNode.tryCatchBlocks.add(new TryCatchBlockNode(l0, l1, l1, null)); // now add the code that is executed if no tracing should be performed this.methodNode.instructions.add(noTracingLabel); if (this.firstLine != -1) this.methodNode.instructions.add(new LineNumberNode(this.firstLine, noTracingLabel)); this.methodNode.instructions.add(new InsnNode(ACONST_NULL)); this.methodNode.instructions.add(new VarInsnNode(ASTORE, this.tracerLocalVarIndex)); this.methodNode.instructions.add(oldInstructions); // finally: create a copy of the method that gets the ThreadTracer as argument // this is only necessary for private methods or "<init>" if (this.tracer.wasRedefined(this.readMethod.getReadClass().getName()) && (this.methodNode.access & ACC_PRIVATE) != 0) { final Type[] oldMethodArguments = Type.getArgumentTypes(this.methodNode.desc); final Type[] newMethodArguments = Arrays.copyOf(oldMethodArguments, oldMethodArguments.length + 1); newMethodArguments[oldMethodArguments.length] = Type.getType(ThreadTracer.class); final String newMethodDesc = Type.getMethodDescriptor(Type.getReturnType(this.methodNode.desc), newMethodArguments); final MethodNode newMethod = new MethodNode(this.methodNode.access, this.methodNode.name, newMethodDesc, this.methodNode.signature, (String[]) this.methodNode.exceptions.toArray(new String[this.methodNode.exceptions.size()])); methodIt.add(newMethod); int threadTracerParamPos = ((this.readMethod.getAccess() & Opcodes.ACC_STATIC) == 0 ? 1 : 0); for (final Type t : oldMethodArguments) threadTracerParamPos += t.getSize(); final Map<LabelNode, LabelNode> newMethodLabels = LazyMap.decorate(new HashMap<LabelNode, LabelNode>(), new Factory() { @Override public Object create() { return new LabelNode(); } }); // copy the local variables information to the new method for (final Object o : this.methodNode.localVariables) { final LocalVariableNode lv = (LocalVariableNode) o; newMethod.localVariables.add(new LocalVariableNode(lv.name, lv.desc, lv.signature, newMethodLabels.get(lv.start), newMethodLabels.get(lv.end), lv.index)); } newMethod.maxLocals = this.methodNode.maxLocals; newMethod.maxStack = this.methodNode.maxStack; // copy the try-catch-blocks for (final Object o : this.methodNode.tryCatchBlocks) { final TryCatchBlockNode tcb = (TryCatchBlockNode) o; newMethod.tryCatchBlocks.add(new TryCatchBlockNode(newMethodLabels.get(tcb.start), newMethodLabels.get(tcb.end), newMethodLabels.get(tcb.handler), tcb.type)); } // skip the first 6 instructions, replace them with these: newMethod.instructions.add(new VarInsnNode(ALOAD, threadTracerParamPos)); newMethod.instructions.add(new InsnNode(DUP)); newMethod.instructions.add(new VarInsnNode(ASTORE, this.tracerLocalVarIndex)); newMethod.instructions.add(new JumpInsnNode(IFNULL, newMethodLabels.get(noTracingLabel))); final Iterator<AbstractInsnNode> oldInsnIt = this.methodNode.instructions.iterator(6); // and add all the other instructions while (oldInsnIt.hasNext()) { final AbstractInsnNode insn = oldInsnIt.next(); newMethod.instructions.add(insn.clone(newMethodLabels)); } } ready(); }
From source file:the.bytecode.club.bytecodeviewer.searching.RegexInsnFinder.java
License:Open Source License
/** * Refreshes the internal instruction list when you have made changes to the * method.//w ww. j a v a 2 s. co m */ public void refresh() { origInstructions = cleanInsn(mn.instructions); final List<AbstractInsnNode> il = new ArrayList<AbstractInsnNode>(); for (final AbstractInsnNode ain : mn.instructions.toArray()) if (ain.opcode() >= 0) { il.add(ain); } instructions = il.toArray(new AbstractInsnNode[il.size()]); offsets = new int[instructions.length]; insnString = ""; for (int i = 0; i < instructions.length; i++) { offsets[i] = -1; final AbstractInsnNode ain = instructions[i]; if (ain.opcode() >= 0) { if (ain.opcode() >= opcodes.length) { try { throw new UnexpectedException("Unknown opcode encountered: " + ain.opcode()); } catch (final UnexpectedException e) { new the.bytecode.club.bytecodeviewer.api.ExceptionUI(e); } } offsets[i] = insnString.length(); insnString += opcodes[ain.opcode()]; switch (ain.type()) { case AbstractInsnNode.INT_INSN: final IntInsnNode iin = (IntInsnNode) ain; insnString += "{" + iin.operand + "}"; break; case AbstractInsnNode.LDC_INSN: final LdcInsnNode lin = (LdcInsnNode) ain; insnString += "{" + lin.cst.toString().replace("}", "\\}") + "}"; break; case AbstractInsnNode.VAR_INSN: final VarInsnNode vin = (VarInsnNode) ain; insnString += "_" + vin.var; break; case AbstractInsnNode.IINC_INSN: final IincInsnNode iiin = (IincInsnNode) ain; insnString += "{" + iiin.var + "," + iiin.incr + "}"; break; case AbstractInsnNode.FIELD_INSN: final FieldInsnNode fin = (FieldInsnNode) ain; insnString += "{" + fin.desc + "," + fin.owner + "," + fin.name + "}"; break; case AbstractInsnNode.METHOD_INSN: final MethodInsnNode min = (MethodInsnNode) ain; insnString += "{" + min.desc + "," + min.owner + "," + min.name + "}"; break; case AbstractInsnNode.TYPE_INSN: final TypeInsnNode tin = (TypeInsnNode) ain; insnString += "{" + tin.desc + "}"; break; case AbstractInsnNode.MULTIANEWARRAY_INSN: final MultiANewArrayInsnNode manain = (MultiANewArrayInsnNode) ain; insnString += "{" + manain.dims + "," + manain.desc + "}"; break; default: throw new IllegalArgumentException(String.valueOf(ain.type())); } insnString += " "; } } }