Package org.ow2.asm

Examples of org.ow2.asm.Label

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        mn.visitJumpInsn(GOTO, l0);
        assertValid();
    }

    public void testClassNotFound() {
        Label l0 = new Label();
        mn.visitVarInsn(ALOAD, 0);
        mn.visitVarInsn(ASTORE, 1);
        mn.visitLabel(l0);
        mn.visitInsn(ACONST_NULL);
        mn.visitTypeInsn(CHECKCAST, "D");
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        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC,
                "jumpInsns",
                "(IJFD)V",
                null,
                null);
        Label l0 = new Label();
        // ifxx
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFNE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFEQ, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFLE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFGE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFLT, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IFGT, l0);
        // ificmpxx
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPNE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPEQ, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPLE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPGE, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPLT, l0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitJumpInsn(IF_ICMPGT, l0);
        // lcmp
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFNE, l0);
        // fcmpx
        mv.visitVarInsn(FLOAD, 4);
        mv.visitVarInsn(FLOAD, 4);
        mv.visitInsn(FCMPL);
        mv.visitJumpInsn(IFNE, l0);
        mv.visitVarInsn(FLOAD, 4);
        mv.visitVarInsn(FLOAD, 4);
        mv.visitInsn(FCMPG);
        mv.visitJumpInsn(IFNE, l0);
        // dcmpx
        mv.visitVarInsn(DLOAD, 5);
        mv.visitVarInsn(DLOAD, 5);
        mv.visitInsn(DCMPL);
        mv.visitJumpInsn(IFNE, l0);
        mv.visitVarInsn(DLOAD, 5);
        mv.visitVarInsn(DLOAD, 5);
        mv.visitInsn(DCMPG);
        mv.visitJumpInsn(IFNE, l0);
        // ifacmp
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitJumpInsn(IF_ACMPNE, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitJumpInsn(IF_ACMPEQ, l0);
        // ifnull
        mv.visitVarInsn(ALOAD, 0);
        mv.visitJumpInsn(IFNULL, l0);
        mv.visitInsn(ICONST_0);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitJumpInsn(IFNONNULL, l0);
        mv.visitInsn(ICONST_0);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitVarInsn(ALOAD, 0);
        // tableswitch
        Label l1 = new Label();
        Label l2 = new Label();
        Label l3 = new Label();
        mv.visitVarInsn(ILOAD, 1);
        mv.visitTableSwitchInsn(0, 2, l3/*default*/, l1, l2, l3 );
        mv.visitLabel(l1);
        mv.visitInsn(ICONST_1);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l2);
        mv.visitInsn(ICONST_2);
        mv.visitVarInsn(ISTORE, 7);
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l3);
        mv.visitVarInsn(ILOAD, 7);
        // lookupswitch
        Label l4 = new Label();
        Label l5 = new Label();
        Label l6 = new Label();
        mv.visitVarInsn(ILOAD, 1);
        mv.visitLookupSwitchInsn(l6, new int[] { 0, 1, 2 }, new Label[] {
            l4,
            l5,
            l6 });
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    @Override
    void compile(final MethodVisitor mv) {
        // compiles e1, e2, and adds the instructions to compare the two values
        e1.compile(mv);
        e2.compile(mv);
        Label iftrue = new Label();
        Label end = new Label();
        mv.visitJumpInsn(IF_ICMPGT, iftrue);
        // case where e1 <= e2 : pushes false and jump to "end"
        mv.visitLdcInsn(new Integer(0));
        mv.visitJumpInsn(GOTO, end);
        // case where e1 > e2 : pushes true
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    void compile(final MethodVisitor mv) {
        // compiles e1
        e1.compile(mv);
        // tests if e1 is false
        mv.visitInsn(DUP);
        Label end = new Label();
        mv.visitJumpInsn(IFEQ, end);
        // case where e1 is true : e1 && e2 is equal to e2
        mv.visitInsn(POP);
        e2.compile(mv);
        // if e1 is false, e1 && e2 is equal to e1:
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    void compile(final MethodVisitor mv) {
        // compiles e1
        e1.compile(mv);
        // tests if e1 is true
        mv.visitInsn(DUP);
        Label end = new Label();
        mv.visitJumpInsn(IFNE, end);
        // case where e1 is false : e1 || e2 is equal to e2
        mv.visitInsn(POP);
        e2.compile(mv);
        // if e1 is true, e1 || e2 is equal to e1:
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    }

    @Override
    protected Label[] getLabels() {
        super.getLabels();
        return new Label[] { new Label() };
    }
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                            for (int i = 0; i < param; ++i) {
                                var += args[i].getSize();
                            }
                            String c = "java/lang/IllegalArgumentException";
                            String d = "(Ljava/lang/String;)V";
                            Label end = new Label();
                            mv.visitVarInsn(Opcodes.ALOAD, var);
                            mv.visitJumpInsn(Opcodes.IFNONNULL, end);
                            mv.visitTypeInsn(Opcodes.NEW, c);
                            mv.visitInsn(Opcodes.DUP);
                            mv.visitLdcInsn("Argument " + param
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            }
            return sb.toString();
        }

        protected final Label getLabel(final Object label) {
            Label lbl = labels.get(label);
            if (lbl == null) {
                lbl = new Label();
                labels.put(label, lbl);
            }
            return lbl;
        }
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        @Override
        public final void end(final String name) {
            HashMap<?, ?> vals = (HashMap<?, ?>) pop();
            int min = Integer.parseInt((String) vals.get("min"));
            int max = Integer.parseInt((String) vals.get("max"));
            Label dflt = getLabel(vals.get("dflt"));
            ArrayList<?> lbls = (ArrayList<?>) vals.get("labels");
            Label[] labels = lbls.toArray(new Label[lbls.size()]);
            getCodeVisitor().visitTableSwitchInsn(min, max, dflt, labels);
        }
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        }

        @Override
        public final void end(final String name) {
            HashMap<?, ?> vals = (HashMap<?, ?>) pop();
            Label dflt = getLabel(vals.get("dflt"));
            ArrayList<String> keyList = (ArrayList<String>) vals.get("keys");
            ArrayList<?> lbls = (ArrayList<?>) vals.get("labels");
            Label[] labels = lbls.toArray(new Label[lbls.size()]);
            int[] keys = new int[keyList.size()];
            for (int i = 0; i < keys.length; i++) {
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