compiler/org/eclipse/jdt/internal/compiler/lookup/PackageBinding.java - gerrit/e4/org.eclipse.jdt.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2009 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.compiler.lookup;

 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.internal.compiler.util.HashtableOfPackage;
 import org.eclipse.jdt.internal.compiler.util.HashtableOfType;

 public class PackageBinding extends Binding implements TypeConstants {
 	public long tagBits = 0; // See values in the interface TagBits below

 	public char[][] compoundName;
 	PackageBinding parent;
 	public LookupEnvironment environment;
 	HashtableOfType knownTypes;
 	HashtableOfPackage knownPackages;
 protected PackageBinding() {
 	// for creating problem package
 }
 public PackageBinding(char[] topLevelPackageName, LookupEnvironment environment) {
 	this(new char[][] {topLevelPackageName}, null, environment);
 }
 /* Create the default package.
 */
 public PackageBinding(char[][] compoundName, PackageBinding parent, LookupEnvironment environment) {
 	this.compoundName = compoundName;
 	this.parent = parent;
 	this.environment = environment;
 	this.knownTypes = null; // initialized if used... class counts can be very large 300-600
 	this.knownPackages = new HashtableOfPackage(3); // sub-package counts are typically 0-3
 }

 public PackageBinding(LookupEnvironment environment) {
 	this(CharOperation.NO_CHAR_CHAR, null, environment);
 }
 private void addNotFoundPackage(char[] simpleName) {
 	this.knownPackages.put(simpleName, LookupEnvironment.TheNotFoundPackage);
 }
 private void addNotFoundType(char[] simpleName) {
 	if (this.knownTypes == null)
 		this.knownTypes = new HashtableOfType(25);
 	this.knownTypes.put(simpleName, LookupEnvironment.TheNotFoundType);
 }
 void addPackage(PackageBinding element) {
 	if ((element.tagBits & TagBits.HasMissingType) == 0) clearMissingTagBit();
 	this.knownPackages.put(element.compoundName[element.compoundName.length - 1], element);
 }
 void addType(ReferenceBinding element) {
 	if ((element.tagBits & TagBits.HasMissingType) == 0) clearMissingTagBit();
 	if (this.knownTypes == null)
 		this.knownTypes = new HashtableOfType(25);
 	this.knownTypes.put(element.compoundName[element.compoundName.length - 1], element);
 }

 void clearMissingTagBit() {
 	PackageBinding current = this;
 	do {
 		current.tagBits &= ~TagBits.HasMissingType;
 	} while ((current = current.parent) != null);
 }
 /*
  * slash separated name
  * org.eclipse.jdt.core --> org/eclipse/jdt/core
  */
 public char[] computeUniqueKey(boolean isLeaf) {
 	return CharOperation.concatWith(this.compoundName, '/');
 }
 private PackageBinding findPackage(char[] name) {
 	if (!this.environment.isPackage(this.compoundName, name))
 		return null;

 	char[][] subPkgCompoundName = CharOperation.arrayConcat(this.compoundName, name);
 	PackageBinding subPackageBinding = new PackageBinding(subPkgCompoundName, this, this.environment);
 	addPackage(subPackageBinding);
 	return subPackageBinding;
 }
 /* Answer the subpackage named name; ask the oracle for the package if its not in the cache.
 * Answer null if it could not be resolved.
 *
 * NOTE: This should only be used when we know there is NOT a type with the same name.
 */
 PackageBinding getPackage(char[] name) {
 	PackageBinding binding = getPackage0(name);
 	if (binding != null) {
 		if (binding == LookupEnvironment.TheNotFoundPackage)
 			return null;
 		else
 			return binding;
 	}
 	if ((binding = findPackage(name)) != null)
 		return binding;

 	// not found so remember a problem package binding in the cache for future lookups
 	addNotFoundPackage(name);
 	return null;
 }
 /* Answer the subpackage named name if it exists in the cache.
 * Answer theNotFoundPackage if it could not be resolved the first time
 * it was looked up, otherwise answer null.
 *
 * NOTE: Senders must convert theNotFoundPackage into a real problem
 * package if its to returned.
 */

 PackageBinding getPackage0(char[] name) {
 	return this.knownPackages.get(name);
 }
 /* Answer the type named name; ask the oracle for the type if its not in the cache.
 * Answer a NotVisible problem type if the type is not visible from the invocationPackage.
 * Answer null if it could not be resolved.
 *
 * NOTE: This should only be used by source types/scopes which know there is NOT a
 * package with the same name.
 */

 ReferenceBinding getType(char[] name) {
 	ReferenceBinding referenceBinding = getType0(name);
 	if (referenceBinding == null) {
 		if ((referenceBinding = this.environment.askForType(this, name)) == null) {
 			// not found so remember a problem type binding in the cache for future lookups
 			addNotFoundType(name);
 			return null;
 		}
 	}

 	if (referenceBinding == LookupEnvironment.TheNotFoundType)
 		return null;

 	referenceBinding = (ReferenceBinding) BinaryTypeBinding.resolveType(referenceBinding, this.environment, false /* no raw conversion for now */);
 	if (referenceBinding.isNestedType())
 		return new ProblemReferenceBinding(new char[][]{ name }, referenceBinding, ProblemReasons.InternalNameProvided);
 	return referenceBinding;
 }
 /* Answer the type named name if it exists in the cache.
 * Answer theNotFoundType if it could not be resolved the first time
 * it was looked up, otherwise answer null.
 *
 * NOTE: Senders must convert theNotFoundType into a real problem
 * reference type if its to returned.
 */

 ReferenceBinding getType0(char[] name) {
 	if (this.knownTypes == null)
 		return null;
 	return this.knownTypes.get(name);
 }
 /* Answer the package or type named name; ask the oracle if it is not in the cache.
 * Answer null if it could not be resolved.
 *
 * When collisions exist between a type name & a package name, answer the type.
 * Treat the package as if it does not exist... a problem was already reported when the type was defined.
 *
 * NOTE: no visibility checks are performed.
 * THIS SHOULD ONLY BE USED BY SOURCE TYPES/SCOPES.
 */

 public Binding getTypeOrPackage(char[] name) {
 	ReferenceBinding referenceBinding = getType0(name);
 	if (referenceBinding != null && referenceBinding != LookupEnvironment.TheNotFoundType) {
 		referenceBinding = (ReferenceBinding) BinaryTypeBinding.resolveType(referenceBinding, this.environment, false /* no raw conversion for now */);
 		if (referenceBinding.isNestedType()) {
 			return new ProblemReferenceBinding(new char[][]{name}, referenceBinding, ProblemReasons.InternalNameProvided);
 		}
 		if ((referenceBinding.tagBits & TagBits.HasMissingType) == 0) {
 			return referenceBinding;
 		}
 		// referenceBinding is a MissingType, will return it if no package is found
 	}

 	PackageBinding packageBinding = getPackage0(name);
 	if (packageBinding != null && packageBinding != LookupEnvironment.TheNotFoundPackage) {
 		return packageBinding;
 	}
 	if (referenceBinding == null) { // have not looked for it before
 		if ((referenceBinding = this.environment.askForType(this, name)) != null) {
 			if (referenceBinding.isNestedType()) {
 				return new ProblemReferenceBinding(new char[][]{name}, referenceBinding, ProblemReasons.InternalNameProvided);
 			}
 			return referenceBinding;
 		}

 		// Since name could not be found, add a problem binding
 		// to the collections so it will be reported as an error next time.
 		addNotFoundType(name);
 	}

 	if (packageBinding == null) { // have not looked for it before
 		if ((packageBinding = findPackage(name)) != null) {
 			return packageBinding;
 		}
 		if (referenceBinding != null && referenceBinding != LookupEnvironment.TheNotFoundType) {
 			return referenceBinding; // found cached missing type - check if package conflict
 		}
 		addNotFoundPackage(name);
 	}

 	return null;
 }
 public final boolean isViewedAsDeprecated() {
 	if ((this.tagBits & TagBits.DeprecatedAnnotationResolved) == 0) {
 		this.tagBits |= TagBits.DeprecatedAnnotationResolved;
 		if (this.compoundName != CharOperation.NO_CHAR_CHAR) {
 			ReferenceBinding packageInfo = this.getType(TypeConstants.PACKAGE_INFO_NAME);
 			if (packageInfo != null) {
 				packageInfo.initializeDeprecatedAnnotationTagBits();
 				this.tagBits |= packageInfo.tagBits & TagBits.AllStandardAnnotationsMask;
 			}
 		}
 	}
 	return (this.tagBits & TagBits.AnnotationDeprecated) != 0;
 }
 /* API
 * Answer the receiver's binding type from Binding.BindingID.
 */
 public final int kind() {
 	return Binding.PACKAGE;
 }

 public int problemId() {
 	if ((this.tagBits & TagBits.HasMissingType) != 0)
 		return ProblemReasons.NotFound;
 	return ProblemReasons.NoError;
 }

 public char[] readableName() /*java.lang*/ {
 	return CharOperation.concatWith(this.compoundName, '.');
 }
 public String toString() {
 	String str;
 	if (this.compoundName == CharOperation.NO_CHAR_CHAR) {
 		str = "The Default Package"; //$NON-NLS-1$
 	} else {
 		str = "package " + ((this.compoundName != null) ? CharOperation.toString(this.compoundName) : "UNNAMED"); //$NON-NLS-1$ //$NON-NLS-2$
 	}
 	if ((this.tagBits & TagBits.HasMissingType) != 0) {
 		str += "[MISSING]"; //$NON-NLS-1$
 	}
 	return str;
 }
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2009 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.compiler.lookup;

	import org.eclipse.jdt.core.compiler.CharOperation;
	import org.eclipse.jdt.internal.compiler.util.HashtableOfPackage;
	import org.eclipse.jdt.internal.compiler.util.HashtableOfType;

	public class PackageBinding extends Binding implements TypeConstants {
	public long tagBits = 0; // See values in the interface TagBits below

	public char[][] compoundName;
	PackageBinding parent;
	public LookupEnvironment environment;
	HashtableOfType knownTypes;
	HashtableOfPackage knownPackages;
	protected PackageBinding() {
	// for creating problem package
	}
	public PackageBinding(char[] topLevelPackageName, LookupEnvironment environment) {
	this(new char[][] {topLevelPackageName}, null, environment);
	}
	/* Create the default package.
	*/
	public PackageBinding(char[][] compoundName, PackageBinding parent, LookupEnvironment environment) {
	this.compoundName = compoundName;
	this.parent = parent;
	this.environment = environment;
	this.knownTypes = null; // initialized if used... class counts can be very large 300-600
	this.knownPackages = new HashtableOfPackage(3); // sub-package counts are typically 0-3
	}

	public PackageBinding(LookupEnvironment environment) {
	this(CharOperation.NO_CHAR_CHAR, null, environment);
	}
	private void addNotFoundPackage(char[] simpleName) {
	this.knownPackages.put(simpleName, LookupEnvironment.TheNotFoundPackage);
	}
	private void addNotFoundType(char[] simpleName) {
	if (this.knownTypes == null)
	this.knownTypes = new HashtableOfType(25);
	this.knownTypes.put(simpleName, LookupEnvironment.TheNotFoundType);
	}
	void addPackage(PackageBinding element) {
	if ((element.tagBits & TagBits.HasMissingType) == 0) clearMissingTagBit();
	this.knownPackages.put(element.compoundName[element.compoundName.length - 1], element);
	}
	void addType(ReferenceBinding element) {
	if ((element.tagBits & TagBits.HasMissingType) == 0) clearMissingTagBit();
	if (this.knownTypes == null)
	this.knownTypes = new HashtableOfType(25);
	this.knownTypes.put(element.compoundName[element.compoundName.length - 1], element);
	}

	void clearMissingTagBit() {
	PackageBinding current = this;
	do {
	current.tagBits &= ~TagBits.HasMissingType;
	} while ((current = current.parent) != null);
	}
	/*
	* slash separated name
	* org.eclipse.jdt.core --> org/eclipse/jdt/core
	*/
	public char[] computeUniqueKey(boolean isLeaf) {
	return CharOperation.concatWith(this.compoundName, '/');
	}
	private PackageBinding findPackage(char[] name) {
	if (!this.environment.isPackage(this.compoundName, name))
	return null;

	char[][] subPkgCompoundName = CharOperation.arrayConcat(this.compoundName, name);
	PackageBinding subPackageBinding = new PackageBinding(subPkgCompoundName, this, this.environment);
	addPackage(subPackageBinding);
	return subPackageBinding;
	}
	/* Answer the subpackage named name; ask the oracle for the package if its not in the cache.
	* Answer null if it could not be resolved.
	*
	* NOTE: This should only be used when we know there is NOT a type with the same name.
	*/
	PackageBinding getPackage(char[] name) {
	PackageBinding binding = getPackage0(name);
	if (binding != null) {
	if (binding == LookupEnvironment.TheNotFoundPackage)
	return null;
	else
	return binding;
	}
	if ((binding = findPackage(name)) != null)
	return binding;

	// not found so remember a problem package binding in the cache for future lookups
	addNotFoundPackage(name);
	return null;
	}
	/* Answer the subpackage named name if it exists in the cache.
	* Answer theNotFoundPackage if it could not be resolved the first time
	* it was looked up, otherwise answer null.
	*
	* NOTE: Senders must convert theNotFoundPackage into a real problem
	* package if its to returned.
	*/

	PackageBinding getPackage0(char[] name) {
	return this.knownPackages.get(name);
	}
	/* Answer the type named name; ask the oracle for the type if its not in the cache.
	* Answer a NotVisible problem type if the type is not visible from the invocationPackage.
	* Answer null if it could not be resolved.
	*
	* NOTE: This should only be used by source types/scopes which know there is NOT a
	* package with the same name.
	*/

	ReferenceBinding getType(char[] name) {
	ReferenceBinding referenceBinding = getType0(name);
	if (referenceBinding == null) {
	if ((referenceBinding = this.environment.askForType(this, name)) == null) {
	// not found so remember a problem type binding in the cache for future lookups
	addNotFoundType(name);
	return null;
	}
	}

	if (referenceBinding == LookupEnvironment.TheNotFoundType)
	return null;

	referenceBinding = (ReferenceBinding) BinaryTypeBinding.resolveType(referenceBinding, this.environment, false /* no raw conversion for now */);
	if (referenceBinding.isNestedType())
	return new ProblemReferenceBinding(new char[][]{ name }, referenceBinding, ProblemReasons.InternalNameProvided);
	return referenceBinding;
	}
	/* Answer the type named name if it exists in the cache.
	* Answer theNotFoundType if it could not be resolved the first time
	* it was looked up, otherwise answer null.
	*
	* NOTE: Senders must convert theNotFoundType into a real problem
	* reference type if its to returned.
	*/

	ReferenceBinding getType0(char[] name) {
	if (this.knownTypes == null)
	return null;
	return this.knownTypes.get(name);
	}
	/* Answer the package or type named name; ask the oracle if it is not in the cache.
	* Answer null if it could not be resolved.
	*
	* When collisions exist between a type name & a package name, answer the type.
	* Treat the package as if it does not exist... a problem was already reported when the type was defined.
	*
	* NOTE: no visibility checks are performed.
	* THIS SHOULD ONLY BE USED BY SOURCE TYPES/SCOPES.
	*/

	public Binding getTypeOrPackage(char[] name) {
	ReferenceBinding referenceBinding = getType0(name);
	if (referenceBinding != null && referenceBinding != LookupEnvironment.TheNotFoundType) {
	referenceBinding = (ReferenceBinding) BinaryTypeBinding.resolveType(referenceBinding, this.environment, false /* no raw conversion for now */);
	if (referenceBinding.isNestedType()) {
	return new ProblemReferenceBinding(new char[][]{name}, referenceBinding, ProblemReasons.InternalNameProvided);
	}
	if ((referenceBinding.tagBits & TagBits.HasMissingType) == 0) {
	return referenceBinding;
	}
	// referenceBinding is a MissingType, will return it if no package is found
	}

	PackageBinding packageBinding = getPackage0(name);
	if (packageBinding != null && packageBinding != LookupEnvironment.TheNotFoundPackage) {
	return packageBinding;
	}
	if (referenceBinding == null) { // have not looked for it before
	if ((referenceBinding = this.environment.askForType(this, name)) != null) {
	if (referenceBinding.isNestedType()) {
	return new ProblemReferenceBinding(new char[][]{name}, referenceBinding, ProblemReasons.InternalNameProvided);
	}
	return referenceBinding;
	}

	// Since name could not be found, add a problem binding
	// to the collections so it will be reported as an error next time.
	addNotFoundType(name);
	}

	if (packageBinding == null) { // have not looked for it before
	if ((packageBinding = findPackage(name)) != null) {
	return packageBinding;
	}
	if (referenceBinding != null && referenceBinding != LookupEnvironment.TheNotFoundType) {
	return referenceBinding; // found cached missing type - check if package conflict
	}
	addNotFoundPackage(name);
	}

	return null;
	}
	public final boolean isViewedAsDeprecated() {
	if ((this.tagBits & TagBits.DeprecatedAnnotationResolved) == 0) {
	this.tagBits \|= TagBits.DeprecatedAnnotationResolved;
	if (this.compoundName != CharOperation.NO_CHAR_CHAR) {
	ReferenceBinding packageInfo = this.getType(TypeConstants.PACKAGE_INFO_NAME);
	if (packageInfo != null) {
	packageInfo.initializeDeprecatedAnnotationTagBits();
	this.tagBits \|= packageInfo.tagBits & TagBits.AllStandardAnnotationsMask;
	}
	}
	}
	return (this.tagBits & TagBits.AnnotationDeprecated) != 0;
	}
	/* API
	* Answer the receiver's binding type from Binding.BindingID.
	*/
	public final int kind() {
	return Binding.PACKAGE;
	}

	public int problemId() {
	if ((this.tagBits & TagBits.HasMissingType) != 0)
	return ProblemReasons.NotFound;
	return ProblemReasons.NoError;
	}

	public char[] readableName() /java.lang/ {
	return CharOperation.concatWith(this.compoundName, '.');
	}
	public String toString() {
	String str;
	if (this.compoundName == CharOperation.NO_CHAR_CHAR) {
	str = "The Default Package"; //$NON-NLS-1$
	} else {
	str = "package " + ((this.compoundName != null) ? CharOperation.toString(this.compoundName) : "UNNAMED"); //$NON-NLS-1$ //$NON-NLS-2$
	}
	if ((this.tagBits & TagBits.HasMissingType) != 0) {
	str += "[MISSING]"; //$NON-NLS-1$
	}
	return str;
	}
	}