Examples of org.objectweb.asm.MethodVisitor.visitFieldInsn()

org.objectweb.asm.MethodVisitor.visitFieldInsn()
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object. @param opcode the opcode of the type instruction to be visited. Thisopcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD. @param owner the internal name of the field's owner class (see {@link Type#getInternalName() getInternalName}). @param name the field's name. @param desc the field's descriptor (see {@link Type Type}).

            // private void fire()
            mv = cw.visitMethod(ACC_PRIVATE, "fire", "()V", null, new String[] { "org/jboss/byteman/rule/exception/ExecuteException" });
            mv.visitCode();
            // rule.getAction().interpret(this);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/rule/Rule", "getAction", "()Lorg/jboss/byteman/rule/Action;");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/rule/Action", "interpret", "(Lorg/jboss/byteman/rule/helper/HelperAdapter;)Ljava/lang/Object;");
            // return
            mv.visitInsn(RETURN);

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        // bindingMap = new HashMap<String, Object);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitTypeInsn(NEW, "java/util/HashMap");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/util/HashMap", "<init>", "()V");
        mv.visitFieldInsn(PUTFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
        // this.rule = rule
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
        // return;

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        mv.visitMethodInsn(INVOKESPECIAL, "java/util/HashMap", "<init>", "()V");
        mv.visitFieldInsn(PUTFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
        // this.rule = rule
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
        // return;
        mv.visitInsn(RETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
        }

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            mv.visitMethodInsn(INVOKESTATIC, "org/jboss/byteman/agent/Transformer", "isVerbose", "()Z");
            Label l0 = new Label();
            mv.visitJumpInsn(IFEQ, l0);
            // then
            // System.out.println(rule.getName() + " execute");
            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
            mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");

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            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
            mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "org/jboss/byteman/rule/Rule", "getName", "()Ljava/lang/String;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
            mv.visitLdcInsn(" execute()");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");

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                    continue;
                }
                if (binding.isHelper()) {
                    // bindingMap.put(name, this);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
                    mv.visitLdcInsn(name);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
                    mv.visitInsn(POP);
                } else if (binding.isRecipient()) {

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                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
                    mv.visitInsn(POP);
                } else if (binding.isRecipient()) {
                    // bindingMap.put(name, recipient);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
                    mv.visitLdcInsn(name);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
                    mv.visitInsn(POP);
                // } else if (binding.isParam() || binding.isLocalVar() || binding.isReturn() ||

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                // } else if (binding.isParam() || binding.isLocalVar() || binding.isReturn() ||
                //             binding.isThrowable() || binding.isParamCount() || binding.isParamArray()) {
                } else if (!binding.isBindVar()) {
                    // bindingMap.put(name, args[binding.getCallArrayIndex()]);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
                    mv.visitLdcInsn(name);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitLdcInsn(binding.getCallArrayIndex());
                    mv.visitInsn(AALOAD);
                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");

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                        // Object value = bindingMap.get(name);
                        // args[idx] = value;
                        mv.visitVarInsn(ALOAD, 2); // args
                        mv.visitLdcInsn(idx);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
                        mv.visitLdcInsn(name);
                        mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "get", "(Ljava/lang/Object;)Ljava/lang/Object;");
                        mv.visitInsn(AASTORE);
                    }
                }

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        // public void setBinding(String name, Object value)
        mv = cw.visitMethod(ACC_PUBLIC, "setBinding", "(Ljava/lang/String;Ljava/lang/Object;)V", null, null);
        mv.visitCode();
        //  bindingMap.put(name, value);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/HashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
        mv.visitInsn(POP);
        // return

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