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
/*******************************************************************************
 * 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.
/** 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;
}
}