Package org.cojen.classfile

Examples of org.cojen.classfile.CodeBuilder.createLabel()

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                LocalVariable temp = p1;
                p1 = p2;
                p2 = temp;
            }

            Label nextLabel = builder.createLabel();

            // Handle the case when p1 and p2 are the same (or both null)
            if (!propertyClass.isPrimitive()) {
                builder.loadLocal(p1);
                builder.loadLocal(p2);
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                builder.loadLocal(p2);
                builder.ifEqualBranch(nextLabel, true);

                // Do null order checks for properties.
                nullHigh = (bc.mFlags & 0x02) == 0;
                label = builder.createLabel();
                builder.loadLocal(p1);
                builder.ifNullBranch(label, false);
                builder.loadConstant(nullHigh ? 1 : -1);
                builder.returnValue(TypeDesc.INT);
                label.setLocation();
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                builder.loadLocal(p1);
                builder.ifNullBranch(label, false);
                builder.loadConstant(nullHigh ? 1 : -1);
                builder.returnValue(TypeDesc.INT);
                label.setLocation();
                label = builder.createLabel();
                builder.loadLocal(p2);
                builder.ifNullBranch(label, false);
                builder.loadConstant(nullHigh ? -1 : 1);
                builder.returnValue(TypeDesc.INT);
                label.setLocation();
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                // If case-sensitive is off and a collator is provided and
                // property could be a String, apply collator.
                if ((bc.mFlags & 0x04) == 0 && bc.mCollator != null &&
                    propertyClass.isAssignableFrom(String.class)) {

                    Label resultLabel = builder.createLabel();

                    if (!String.class.isAssignableFrom(propertyClass)) {
                        // Check if both property values are strings at
                        // runtime. If they aren't, cast to Comparable and call
                        // compareTo.
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                        TypeDesc stringType = TypeDesc.STRING;

                        builder.loadLocal(p1);
                        builder.instanceOf(stringType);
                        Label notString = builder.createLabel();
                        builder.ifZeroComparisonBranch(notString, "==");
                        builder.loadLocal(p2);
                        builder.instanceOf(stringType);
                        Label isString = builder.createLabel();
                        builder.ifZeroComparisonBranch(isString, "!=");
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                        builder.instanceOf(stringType);
                        Label notString = builder.createLabel();
                        builder.ifZeroComparisonBranch(notString, "==");
                        builder.loadLocal(p2);
                        builder.instanceOf(stringType);
                        Label isString = builder.createLabel();
                        builder.ifZeroComparisonBranch(isString, "!=");

                        notString.setLocation();
                        generateComparableCompareTo
                            (builder, propertyClass, compareToMethod,
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        MethodInfo mi = cf.addMethod(compareMethod);
        mi.markSynthetic();
        builder = new CodeBuilder(mi);

        Label endLabel = builder.createLabel();
        LocalVariable obj1 = builder.getParameter(0);
        LocalVariable obj2 = builder.getParameter(1);

        // The first rule always applies to the beans directly. All others
        // apply to properties.
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        builder.loadLocal(obj2);
        builder.ifEqualBranch(endLabel, true);

        // Do null order checks for beans.
        boolean nullHigh = (bc.mFlags & 0x02) == 0;
        Label label = builder.createLabel();
        builder.loadLocal(obj1);
        builder.ifNullBranch(label, false);
        builder.loadConstant(nullHigh ? 1 : -1);
        builder.returnValue(TypeDesc.INT);
        label.setLocation();
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        builder.loadLocal(obj1);
        builder.ifNullBranch(label, false);
        builder.loadConstant(nullHigh ? 1 : -1);
        builder.returnValue(TypeDesc.INT);
        label.setLocation();
        label = builder.createLabel();
        builder.loadLocal(obj2);
        builder.ifNullBranch(label, false);
        builder.loadConstant(nullHigh ? -1 : 1);
        builder.returnValue(TypeDesc.INT);
        label.setLocation();
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            builder.loadLocal(obj1);
            builder.loadLocal(obj2);
            builder.invoke(compareMethod);
            builder.storeLocal(result);
            builder.loadLocal(result);
            label = builder.createLabel();
            builder.ifZeroComparisonBranch(label, "==");
            builder.loadLocal(result);
            builder.returnValue(TypeDesc.INT);
            label.setLocation();
        }
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