Examples of org.ow2.asm.Label

org.ow2.asm.Label
A label represents a position in the bytecode of a method. Labels are used for jump, goto, and switch instructions, and for try catch blocks. A label designates the instruction that is just after. Note however that there can be other elements between a label and the instruction it designates (such as other labels, stack map frames, line numbers, etc.). @author Eric Bruneton

        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ALOAD, 1);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNONNULL, l0);
        mv.visitVarInsn(ALOAD, 2);
        Label l1 = new Label();
        mv.visitJumpInsn(GOTO, l1);
        mv.visitFrame(F_FULL, 3, new Object[] {
            "pkg/FrameTable",
            "java/lang/String",
            NULL }, 2, new Object[] { "pkg/FrameTable", NULL });

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                null);
        mv.visitCode();
        mv.visitVarInsn(ILOAD, 5);
        mv.visitVarInsn(ISTORE, 13);
        mv.visitVarInsn(ILOAD, 1);
        Label l0 = new Label();
        mv.visitJumpInsn(IFEQ, l0);
        mv.visitInsn(RETURN);
        mv.visitFrame(F_APPEND, 2, new Object[] { TOP, INTEGER }, 0, null);
        mv.visitLabel(l0);
        mv.visitInsn(RETURN);

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        mv.visitLdcInsn(new Long(11L));
        mv.visitVarInsn(LSTORE, 15);
        mv.visitLdcInsn(new Long(11L));
        mv.visitVarInsn(LSTORE, 17);
        mv.visitVarInsn(ALOAD, 1);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNONNULL, l0);
        mv.visitInsn(RETURN);
        mv.visitFrame(F_FULL, 15, new Object[] {
            "pkg/FrameTable",
            "java/lang/String",

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                "mergeTypes",
                "(Z)V",
                null,
                null);
        mv.visitCode();
        Label l0 = new Label();
        mv.visitFieldInsn(GETSTATIC,
                "pkg/FrameTable",
                "long",
                "Ljava/lang/Long;");
        mv.visitVarInsn(ASTORE, 2);

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                null);
        mv.visitCode();
        mv.visitInsn(ICONST_0);
        mv.visitInsn(ICONST_1);
        mv.visitVarInsn(ILOAD, 1);
        Label l0 = new Label();
        mv.visitJumpInsn(IFEQ, l0);
        mv.visitInsn(ICONST_0);
        Label l1 = new Label();
        mv.visitJumpInsn(GOTO, l1);
        mv.visitFrame(F_FULL,
                1,
                new Object[] { "pkg/FrameTable" },
                2,

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                "(Z)I",
                null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ILOAD, 1);
        Label l1 = new Label();
        mv.visitJumpInsn(IFEQ, l1);
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ILOAD, 1);
        Label l2 = new Label();
        mv.visitJumpInsn(IFEQ, l2);
        mv.visitFieldInsn(GETSTATIC,
                "pkg/FrameTable",
                "longArray",
                "[Ljava/lang/Long;");
        mv.visitVarInsn(ASTORE, 2);
        mv.visitFrame(F_APPEND,
                1,
                new Object[] { "[Ljava/lang/Long;" },
                0,
                null);
        mv.visitLabel(l2);
        mv.visitVarInsn(ALOAD, 2);
        Label l3 = new Label();
        mv.visitJumpInsn(IFNULL, l3);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitInsn(ARRAYLENGTH);
        Label l4 = new Label();
        mv.visitJumpInsn(IFNE, l4);
        mv.visitFrame(F_SAME, 0, null, 0, null);
        mv.visitLabel(l3);
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 3);
        Label l5 = new Label();
        mv.visitJumpInsn(GOTO, l5);
        mv.visitFrame(F_SAME, 0, null, 0, null);
        mv.visitLabel(l4);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitInsn(ICONST_0);

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                null);
        mv.visitCode();
        mv.visitInsn(ICONST_0);
        mv.visitVarInsn(ISTORE, 2);
        mv.visitFrame(F_APPEND, 1, new Object[] { INTEGER }, 0, null);
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitVarInsn(ILOAD, 1);
        Label l1 = new Label();
        mv.visitJumpInsn(IF_ICMPGE, l1);
        mv.visitIincInsn(2, 1);
        mv.visitJumpInsn(GOTO, l0);
        mv.visitFrame(F_CHOP, 1, null, 0, null);
        mv.visitLabel(l1);

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                "sameLocals1stackItemFrame",
                "()I",
                null,
                null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        mv.visitTryCatchBlock(l0, l1, l0, null);
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitFrame(F_SAME1,
                0,

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                "sameLocals1stackItemFrame2",
                "()V",
                null,
                null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, null);
        Label l4 = new Label();
        mv.visitTryCatchBlock(l2, l4, l3, null);
        Label l5 = new Label();
        mv.visitTryCatchBlock(l3, l5, l3, null);
        mv.visitLabel(l0);
        mv.visitTypeInsn(NEW, "java/lang/Object");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitVarInsn(ASTORE, 1);
        mv.visitLabel(l1);
        Label l6 = new Label();
        mv.visitJumpInsn(GOTO, l6);
        mv.visitFrame(F_SAME1,
                0,
                null,
                1,

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                "sameLocals1stackItemFrameExtended",
                "()I",
                null,
                null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, null);
        Label l3 = new Label();
        mv.visitTryCatchBlock(l2, l3, l2, null);
        mv.visitLabel(l0);
        mv.visitLdcInsn(new Long(11L));
        mv.visitVarInsn(LSTORE, 1);
        mv.visitLdcInsn(new Long(11L));

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