Example usage for org.eclipse.jdt.internal.compiler.lookup TagBits KnowsDefaultAbstractMethods

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Prototype

long KnowsDefaultAbstractMethods

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Usage

From source file:org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.java

License:Open Source License

private void addDefaultAbstractMethods() {
    if ((this.tagBits & TagBits.KnowsDefaultAbstractMethods) != 0)
        return;/*from w  w w. j  a  v  a 2 s .  c om*/

    this.tagBits |= TagBits.KnowsDefaultAbstractMethods;
    if (isClass() && isAbstract()) {
        if (this.scope.compilerOptions().targetJDK >= ClassFileConstants.JDK1_2)
            return; // no longer added for post 1.2 targets

        ReferenceBinding[] itsInterfaces = superInterfaces();
        if (itsInterfaces != Binding.NO_SUPERINTERFACES) {
            MethodBinding[] defaultAbstracts = null;
            int defaultAbstractsCount = 0;
            ReferenceBinding[] interfacesToVisit = itsInterfaces;
            int nextPosition = interfacesToVisit.length;
            for (int i = 0; i < nextPosition; i++) {
                ReferenceBinding superType = interfacesToVisit[i];
                if (superType.isValidBinding()) {
                    MethodBinding[] superMethods = superType.methods();
                    nextAbstractMethod: for (int m = superMethods.length; --m >= 0;) {
                        MethodBinding method = superMethods[m];
                        // explicitly implemented ?
                        if (implementsMethod(method))
                            continue nextAbstractMethod;
                        if (defaultAbstractsCount == 0) {
                            defaultAbstracts = new MethodBinding[5];
                        } else {
                            // already added as default abstract ?
                            for (int k = 0; k < defaultAbstractsCount; k++) {
                                MethodBinding alreadyAdded = defaultAbstracts[k];
                                if (CharOperation.equals(alreadyAdded.selector, method.selector)
                                        && alreadyAdded.areParametersEqual(method))
                                    continue nextAbstractMethod;
                            }
                        }
                        MethodBinding defaultAbstract = new MethodBinding(
                                method.modifiers | ExtraCompilerModifiers.AccDefaultAbstract
                                        | ClassFileConstants.AccSynthetic,
                                method.selector, method.returnType, method.parameters, method.thrownExceptions,
                                this);
                        if (defaultAbstractsCount == defaultAbstracts.length)
                            System.arraycopy(defaultAbstracts, 0,
                                    defaultAbstracts = new MethodBinding[2 * defaultAbstractsCount], 0,
                                    defaultAbstractsCount);
                        defaultAbstracts[defaultAbstractsCount++] = defaultAbstract;
                    }

                    if ((itsInterfaces = superType.superInterfaces()) != Binding.NO_SUPERINTERFACES) {
                        int itsLength = itsInterfaces.length;
                        if (nextPosition + itsLength >= interfacesToVisit.length)
                            System.arraycopy(interfacesToVisit, 0,
                                    interfacesToVisit = new ReferenceBinding[nextPosition + itsLength + 5], 0,
                                    nextPosition);
                        nextInterface: for (int a = 0; a < itsLength; a++) {
                            ReferenceBinding next = itsInterfaces[a];
                            for (int b = 0; b < nextPosition; b++)
                                if (next == interfacesToVisit[b])
                                    continue nextInterface;
                            interfacesToVisit[nextPosition++] = next;
                        }
                    }
                }
            }
            if (defaultAbstractsCount > 0) {
                int length = this.methods.length;
                System.arraycopy(this.methods, 0,
                        this.methods = new MethodBinding[length + defaultAbstractsCount], 0, length);
                System.arraycopy(defaultAbstracts, 0, this.methods, length, defaultAbstractsCount);
                // re-sort methods
                length = length + defaultAbstractsCount;
                if (length > 1)
                    ReferenceBinding.sortMethods(this.methods, 0, length);
                // this.tagBits |= TagBits.AreMethodsSorted; -- already set in #methods()
            }
        }
    }
}

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