org.eclipse.jdt.internal.compiler.lookup.ProblemMethodBinding.java Source code

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Here is the source code for org.eclipse.jdt.internal.compiler.lookup.ProblemMethodBinding.java

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/*******************************************************************************
 * Copyright (c) 2000, 2018 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Stephan Herrmann - Contribution for
 *                     Bug 400874 - [1.8][compiler] Inference infrastructure should evolve to meet JLS8 18.x (Part G of JSR335 spec)
 *                     Bug 433478 - [compiler][null] NPE in ReferenceBinding.isCompatibleWith
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;

public class ProblemMethodBinding extends MethodBinding {

    private int problemReason;
    public MethodBinding closestMatch; // TODO (philippe) should rename into #alternateMatch
    public InferenceContext18 inferenceContext; // inference context may help to coordinate error reporting

    public ProblemMethodBinding(char[] selector, TypeBinding[] args, int problemReason) {
        this.selector = selector;
        this.parameters = (args == null || args.length == 0) ? Binding.NO_PARAMETERS : args;
        this.problemReason = problemReason;
        this.thrownExceptions = Binding.NO_EXCEPTIONS;
    }

    public ProblemMethodBinding(char[] selector, TypeBinding[] args, ReferenceBinding declaringClass,
            int problemReason) {
        this.selector = selector;
        this.parameters = (args == null || args.length == 0) ? Binding.NO_PARAMETERS : args;
        this.declaringClass = declaringClass;
        this.problemReason = problemReason;
        this.thrownExceptions = Binding.NO_EXCEPTIONS;
    }

    public ProblemMethodBinding(MethodBinding closestMatch, char[] selector, TypeBinding[] args,
            int problemReason) {
        this(selector, args, problemReason);
        this.closestMatch = closestMatch;
        if (closestMatch != null && problemReason != ProblemReasons.Ambiguous) {
            this.declaringClass = closestMatch.declaringClass;
            this.returnType = closestMatch.returnType;
            if (problemReason == ProblemReasons.InvocationTypeInferenceFailure
                    || problemReason == ProblemReasons.ContradictoryNullAnnotations) {
                this.thrownExceptions = closestMatch.thrownExceptions;
                this.typeVariables = closestMatch.typeVariables;
                this.modifiers = closestMatch.modifiers;
                this.tagBits = closestMatch.tagBits;
            }
        }
    }

    @Override
    public MethodBinding computeSubstitutedMethod(MethodBinding method, LookupEnvironment env) {
        return this.closestMatch == null ? this : this.closestMatch.computeSubstitutedMethod(method, env);
    }

    @Override
    public MethodBinding findOriginalInheritedMethod(MethodBinding inheritedMethod) {
        return this.closestMatch == null ? this : this.closestMatch.findOriginalInheritedMethod(inheritedMethod);
    }

    @Override
    public MethodBinding genericMethod() {
        return this.closestMatch == null ? this : this.closestMatch.genericMethod();
    }

    @Override
    public MethodBinding original() {
        return this.closestMatch == null ? this : this.closestMatch.original();
    }

    @Override
    public MethodBinding shallowOriginal() {
        return this.closestMatch == null ? this : this.closestMatch.shallowOriginal();
    }

    @Override
    public MethodBinding tiebreakMethod() {
        return this.closestMatch == null ? this : this.closestMatch.tiebreakMethod();
    }

    @Override
    public boolean hasSubstitutedParameters() {
        if (this.closestMatch != null)
            return this.closestMatch.hasSubstitutedParameters();
        return false;
    }

    @Override
    public boolean isParameterizedGeneric() {
        return this.closestMatch instanceof ParameterizedGenericMethodBinding;
    }

    /** API
     * Answer the problem id associated with the receiver.
     * NoError if the receiver is a valid binding.
     */
    @Override
    public final int problemId() {
        return this.problemReason;
    }
}