Examples of org.ow2.asm.MethodVisitor.visitFieldInsn()

org.ow2.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}).


    public void testIllegalFieldInsnArrayDesc() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitFieldInsn(GETFIELD, "C", "i", "[");
            fail();
        } catch (Exception e) {
        }
    }

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    public void testIllegalFieldInsnReferenceDesc() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitFieldInsn(GETFIELD, "C", "i", "L");
            fail();
        } catch (Exception e) {
        }
    }

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    public void testIllegalFieldInsnReferenceDesc2() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitFieldInsn(GETFIELD, "C", "i", "L-;");
            fail();
        } catch (Exception e) {
        }
    }

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        mv.visitVarInsn(FSTORE, 4);
        // I2B
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitInsn(I2B);
        mv.visitFieldInsn(PUTFIELD, "pkg/Insns", "b", "B");
        // I2C
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitInsn(I2C);
        mv.visitFieldInsn(PUTFIELD, "pkg/Insns", "c", "C");

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        mv.visitFieldInsn(PUTFIELD, "pkg/Insns", "b", "B");
        // I2C
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitInsn(I2C);
        mv.visitFieldInsn(PUTFIELD, "pkg/Insns", "c", "C");
        // I2S
        mv.visitVarInsn(ILOAD, 1);
        mv.visitInsn(I2S);
        mv.visitFieldInsn(PUTSTATIC, "pkg/Insns", "s", "S");
        // checkcast

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        mv.visitInsn(I2C);
        mv.visitFieldInsn(PUTFIELD, "pkg/Insns", "c", "C");
        // I2S
        mv.visitVarInsn(ILOAD, 1);
        mv.visitInsn(I2S);
        mv.visitFieldInsn(PUTSTATIC, "pkg/Insns", "s", "S");
        // checkcast
        mv.visitInsn(ACONST_NULL);
        mv.visitTypeInsn(CHECKCAST, "java/lang/String");
        mv.visitInsn(ACONST_NULL);
        mv.visitTypeInsn(CHECKCAST, "[[I");

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                "values",
                "()[Lpkg/Enum;",
                null,
                null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "pkg/Enum", "$VALUES", "[Lpkg/Enum;");
        mv.visitMethodInsn(INVOKEVIRTUAL,
                "[Lpkg/Enum;",
                "clone",
                "()Ljava/lang/Object;");
        mv.visitTypeInsn(CHECKCAST, "[Lpkg/Enum;");

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        MethodVisitor mv;
        
        mv = cv.visitMethod(0, "foo", "()V", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETFIELD, "Doo", "boo", "LBoo;");


        mv.visitLdcInsn(Type.getType("LBoo;"));
        mv.visitLdcInsn(Type.getType("[LDoo;"));
        mv.visitLdcInsn(Type.getType("[I"));
        mv.visitLdcInsn(Type.getType("J"));

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        mv.visitInsn(ICONST_0);
        mv.visitMethodInsn(INVOKESPECIAL,
                "pkg/Enum",
                "<init>",
                "(Ljava/lang/String;I)V");
        mv.visitFieldInsn(PUTSTATIC, "pkg/Enum", "V0", "Lpkg/Enum;");
        mv.visitTypeInsn(NEW, "pkg/Enum");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("V1");
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKESPECIAL,

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        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKESPECIAL,
                "pkg/Enum",
                "<init>",
                "(Ljava/lang/String;I)V");
        mv.visitFieldInsn(PUTSTATIC, "pkg/Enum", "V1", "Lpkg/Enum;");
        mv.visitTypeInsn(NEW, "pkg/Enum");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("V2");
        mv.visitInsn(ICONST_2);
        mv.visitMethodInsn(INVOKESPECIAL,

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