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Eclipse Compiler for Java(TM)
/*******************************************************************************
* Copyright (c) 2000, 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.batch;
import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.env.AccessRestriction;
import org.eclipse.jdt.internal.compiler.env.AccessRuleSet;
import org.eclipse.jdt.internal.compiler.env.IModule;
import org.eclipse.jdt.internal.compiler.env.IModule.IModuleReference;
import org.eclipse.jdt.internal.compiler.lookup.ModuleBinding;
import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
public abstract class ClasspathLocation implements FileSystem.Classpath,
SuffixConstants {
public static final int SOURCE = 1;
public static final int BINARY = 2;
String path;
char[] normalizedPath;
public AccessRuleSet accessRuleSet;
IModule module;
public String destinationPath;
// destination path for compilation units that are reached through this
// classpath location; the coding is consistent with the one of
// Main.destinationPath:
// == null: unspecified, use whatever value is set by the enclosing
// context, id est Main;
// == Main.NONE: absorbent element, do not output class files;
// else: use as the path of the directory into which class files must
// be written.
// potentially carried by any entry that contains to be compiled files
protected ClasspathLocation(AccessRuleSet accessRuleSet,
String destinationPath) {
this.accessRuleSet = accessRuleSet;
this.destinationPath = destinationPath;
}
/**
* Return the first access rule which is violated when accessing a given
* type, or null if no 'non accessible' access rule applies.
*
* @param qualifiedBinaryFileName
* tested type specification, formed as:
* "org/eclipse/jdt/core/JavaCore.class"; on systems that
* use \ as File.separator, the
* "org\eclipse\jdt\core\JavaCore.class" is accepted as well
* @return the first access rule which is violated when accessing a given
* type, or null if none applies
*/
protected AccessRestriction fetchAccessRestriction(String qualifiedBinaryFileName) {
if (this.accessRuleSet == null)
return null;
char [] qualifiedTypeName = qualifiedBinaryFileName.
substring(0, qualifiedBinaryFileName.length() - SUFFIX_CLASS.length)
.toCharArray();
if (File.separatorChar == '\\') {
CharOperation.replace(qualifiedTypeName, File.separatorChar, '/');
}
return this.accessRuleSet.getViolatedRestriction(qualifiedTypeName);
}
public int getMode() {
return SOURCE | BINARY;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + this.getMode();
result = prime * result + ((this.path == null) ? 0 : this.path.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ClasspathLocation other = (ClasspathLocation) obj;
String localPath = this.getPath();
String otherPath = other.getPath();
if (localPath == null) {
if (otherPath != null)
return false;
} else if (!localPath.equals(otherPath))
return false;
if (this.getMode() != other.getMode())
return false;
return true;
}
@Override
public String getPath() {
return this.path;
}
@Override
public String getDestinationPath() {
return this.destinationPath;
}
@Override
public void acceptModule(IModule mod) {
this.module = mod;
}
@Override
public boolean isAutomaticModule() {
return this.module == null ? false : this.module.isAutomatic();
}
@Override
public Collection getModuleNames(Collection limitModules) {
return getModuleNames(limitModules, m -> getModule(m.toCharArray()));
}
@Override
public Collection getModuleNames(Collection limitModules, Function getModule) {
if (this.module != null) {
String name = String.valueOf(this.module.name());
return selectModules(Collections.singleton(name), limitModules, getModule);
}
return Collections.emptyList();
}
protected Collection selectModules(Set modules, Collection limitModules, Function getModule) {
Collection rootModules;
if (limitModules != null) {
Set result = new HashSet<>(modules);
result.retainAll(limitModules);
rootModules = result;
} else {
rootModules = allModules(modules, s -> s, m -> getModule(m.toCharArray()));
}
Set allModules = new HashSet<>(rootModules);
for (String mod : rootModules)
addRequired(mod, allModules, getModule);
return allModules;
}
private void addRequired(String mod, Set allModules, Function getModule) {
IModule iMod = getModule(mod.toCharArray());
if (iMod != null) {
for (IModuleReference requiredRef : iMod.requires()) {
IModule reqMod = getModule.apply(new String(requiredRef.name()));
if (reqMod != null) {
String reqModName = String.valueOf(reqMod.name());
if (allModules.add(reqModName))
addRequired(reqModName, allModules, getModule);
}
}
}
}
protected List allModules(Iterable allSystemModules, Function getModuleName, Function getModule) {
List result = new ArrayList<>();
for (T mod : allSystemModules) {
String moduleName = getModuleName.apply(mod);
result.add(moduleName);
}
return result;
}
@Override
public boolean isPackage(String qualifiedPackageName, String moduleName) {
return getModulesDeclaringPackage(qualifiedPackageName, moduleName) != null;
}
protected char[][] singletonModuleNameIf(boolean condition) {
if (!condition)
return null;
if (this.module != null)
return new char[][] { this.module.name() };
return new char[][] { ModuleBinding.UNNAMED };
}
@Override
public void reset() {
this.module = null;
}
}