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}).

      mv = cv.visitMethod(ACC_PUBLIC, mName, mDesc, null, null);
      if (mv != null) {
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(fType.getOpcode(ILOAD), 1);
        mv.visitFieldInsn(PUTFIELD, name, fName, fDesc);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1 + fType.getSize(), 1 + fType.getSize());
        mv.visitEnd();
      }
    }

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        MethodVisitor mv = cw.visitMethod(modifiers, methodName, desc, null,
                exceptions);
        mv.visitCode();


        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, className, DEPENDENCY, DEPENDENCY_DESC);  // The temporal dependency is on the stack.
        mv.visitMethodInsn(INVOKEVIRTUAL, TEMPORAL_DEPENDENCY, "getService", // Call getService
                "()Ljava/lang/Object;"); // The service object is on the stack.
        int varSvc = freeRoom; 
        freeRoom = freeRoom + 1; // Object Reference.
        mv.visitVarInsn(ASTORE, varSvc); // Store the service object.

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        mv.visitVarInsn(ALOAD, 0); // Load this
        mv.visitInsn(DUP); // Dup
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); // Call  super
        mv.visitVarInsn(ALOAD, 1); // Load the argument
        mv.visitFieldInsn(PUTFIELD, className, DEPENDENCY, DEPENDENCY_DESC); // Assign the dependency field
        mv.visitInsn(RETURN); // Return void


        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        final String methodName = (bind ? "" : "un") + "bind" + referenceName.substring(0, 1).toUpperCase() + referenceName.substring(1);
        final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PROTECTED, methodName, "(" + type.toString() + ")V", null, null);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        if ( bind ) {
            mv.visitVarInsn(type.getOpcode(Opcodes.ILOAD), 1);
            mv.visitFieldInsn(Opcodes.PUTFIELD, className.replace('.', '/'), fieldName, type.toString());
        } else {
            mv.visitFieldInsn(Opcodes.GETFIELD, className.replace('.', '/'), fieldName, type.toString());
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            final Label jmpLabel = new Label();
            mv.visitJumpInsn(Opcodes.IF_ACMPNE, jmpLabel);

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        mv.visitVarInsn(Opcodes.ALOAD, 0);
        if ( bind ) {
            mv.visitVarInsn(type.getOpcode(Opcodes.ILOAD), 1);
            mv.visitFieldInsn(Opcodes.PUTFIELD, className.replace('.', '/'), fieldName, type.toString());
        } else {
            mv.visitFieldInsn(Opcodes.GETFIELD, className.replace('.', '/'), fieldName, type.toString());
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            final Label jmpLabel = new Label();
            mv.visitJumpInsn(Opcodes.IF_ACMPNE, jmpLabel);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitInsn(Opcodes.ACONST_NULL);

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            mv.visitVarInsn(Opcodes.ALOAD, 1);
            final Label jmpLabel = new Label();
            mv.visitJumpInsn(Opcodes.IF_ACMPNE, jmpLabel);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitInsn(Opcodes.ACONST_NULL);
            mv.visitFieldInsn(Opcodes.PUTFIELD, className.replace('.', '/'), fieldName, type.toString());
            mv.visitLabel(jmpLabel);
        }
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(2, 2);
    }

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        "()V");


    for (int i = 0; i < arity; i++) {
      mv.visitInsn(Opcodes.DUP);
      mv.visitVarInsn(Opcodes.ALOAD, i);
      mv.visitFieldInsn(Opcodes.PUTFIELD, this_class_name, "elem"+(i+1), EOBJECT_DESC);
    }
    
    mv.visitInsn(Opcodes.ARETURN);


    mv.visitMaxs(3, arity);

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      mv.visitLabel(labels[zbase]);


      mv.visitVarInsn(Opcodes.ALOAD, 0); // load this
      String field = "elem" + (zbase + 1);


      mv.visitFieldInsn(Opcodes.GETFIELD, this_class_name, field,
          ETERM_TYPE.getDescriptor());
      mv.visitInsn(Opcodes.ARETURN);
    }


    mv.visitLabel(dflt);

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      mv.visitVarInsn(Opcodes.ALOAD, 0); // load this
      mv.visitVarInsn(Opcodes.ALOAD, 2); // load term


      String field = "elem" + (zbase + 1);


      mv.visitFieldInsn(Opcodes.PUTFIELD, this_class_name, field,
          ETERM_TYPE.getDescriptor());
      mv.visitInsn(Opcodes.RETURN);
    }


    mv.visitLabel(dflt);

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    // make the method attributes
    mv = cv.visitMethod(ACC_PROTECTED, "attributes",
        "()" + ESEQ_TYPE.getDescriptor(), null, null);
    mv.visitCode();
    mv.visitFieldInsn(Opcodes.GETSTATIC, self_type.getInternalName(),
        "attributes", ESEQ_TYPE.getDescriptor());
    mv.visitInsn(ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();

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