| /******************************************************************************* |
| * Copyright (c) 2016, 2017 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 |
| * |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.core.compiler.IProblem; |
| import org.eclipse.jdt.internal.compiler.lookup.ModuleBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.PackageBinding; |
| import org.eclipse.jdt.internal.compiler.lookup.Scope; |
| import org.eclipse.jdt.internal.compiler.problem.ProblemSeverities; |
| import org.eclipse.jdt.internal.compiler.util.HashtableOfObject; |
| |
| public abstract class PackageVisibilityStatement extends ModuleStatement { |
| public ImportReference pkgRef; |
| public ModuleReference[] targets; |
| public char[] pkgName; |
| public PackageBinding resolvedPackage; |
| |
| public PackageVisibilityStatement(ImportReference pkgRef, ModuleReference[] targets) { |
| this.pkgRef = pkgRef; |
| this.pkgName = CharOperation.concatWith(this.pkgRef.tokens, '.'); |
| this.targets = targets; |
| } |
| public boolean isQualified() { |
| return this.targets != null && this.targets.length > 0; |
| } |
| |
| public ModuleReference[] getTargetedModules() { |
| return this.targets; |
| } |
| |
| public boolean resolve(Scope scope) { |
| boolean errorsExist = resolvePackageReference(scope) == null; |
| if (this.isQualified()) { |
| HashtableOfObject modules = new HashtableOfObject(this.targets.length); |
| for (int i = 0; i < this.targets.length; i++) { |
| ModuleReference ref = this.targets[i]; |
| if (modules.containsKey(ref.moduleName)) { |
| scope.problemReporter().duplicateModuleReference(IProblem.DuplicateModuleRef, ref); |
| errorsExist = true; |
| } else { |
| ref.resolve(scope.compilationUnitScope()); |
| modules.put(ref.moduleName, ref); |
| } |
| } |
| } |
| return !errorsExist; |
| } |
| protected int computeSeverity(int problemId) { |
| return ProblemSeverities.Error; |
| } |
| protected PackageBinding resolvePackageReference(Scope scope) { |
| if (this.resolvedPackage != null) |
| return this.resolvedPackage; |
| ModuleDeclaration exportingModule = scope.compilationUnitScope().referenceContext.moduleDeclaration; |
| ModuleBinding src = exportingModule.binding; |
| this.resolvedPackage = src != null ? src.getVisiblePackage(this.pkgRef.tokens) : null; |
| int problemId = IProblem.PackageDoesNotExistOrIsEmpty; |
| if (this.resolvedPackage == null) { |
| // TODO: need a check for empty package as well |
| scope.problemReporter().invalidPackageReference(problemId, this, computeSeverity(problemId)); |
| } else { |
| if (!this.resolvedPackage.isDeclaredIn(src)) { |
| this.resolvedPackage = null; |
| // TODO(SHMOD): specific error? |
| scope.problemReporter().invalidPackageReference(problemId, this, computeSeverity(problemId)); |
| } |
| } |
| |
| return this.resolvedPackage; |
| } |
| |
| @Override |
| public StringBuffer print(int indent, StringBuffer output) { |
| this.pkgRef.print(indent, output); |
| if (this.isQualified()) { |
| output.append(" to "); //$NON-NLS-1$ |
| for (int i = 0; i < this.targets.length; i++) { |
| if (i > 0) output.append(", "); //$NON-NLS-1$ |
| this.targets[i].print(0, output); |
| } |
| } |
| return output; |
| } |
| } |