org.eclipse.jdt.core/search/org/eclipse/jdt/internal/core/search/matching/PotentialMatch.java - jdt/eclipse.jdt.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.core.search.matching;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jdt.core.*;
 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.core.search.IJavaSearchResultCollector;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
 import org.eclipse.jdt.internal.compiler.env.*;
 import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
 import org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding;
 import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
 import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
 import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
 import org.eclipse.jdt.internal.core.*;

 public class PotentialMatch implements ICompilationUnit {
 	public static final String NO_SOURCE_FILE_NAME = "NO SOURCE FILE NAME"; //$NON-NLS-1$

 	private MatchLocator2 locator;
 	public IResource resource;
 	public Openable openable;
 	public char[][] compoundName;
 	MatchingNodeSet matchingNodeSet;
 	private String sourceFileName;

 	public PotentialMatch(
 			MatchLocator2 locator,
 			IResource resource,
 			Openable openable) {
 		this.locator = locator;
 		this.resource = resource;
 		this.openable = openable;
 		this.matchingNodeSet = new MatchingNodeSet(locator);
 		char[] qualifiedName = getQualifiedName();
 		if (qualifiedName != null) {
 			this.compoundName = CharOperation.splitOn('.', qualifiedName);
 		}
 	}
 	public boolean equals(Object obj) {
 		if (this.compoundName == null) return super.equals(obj);
 		if (!(obj instanceof PotentialMatch)) return false;
 		return CharOperation.equals(this.compoundName, ((PotentialMatch)obj).compoundName);
 	}

 	/*
 	 * Finds the source of this class file.
 	 * Returns null if not found.
 	 */
 	private char[] findClassFileSource() {
 		String sourceFileName = getSourceFileName();
 		if (sourceFileName == NO_SOURCE_FILE_NAME) return null;
 		char[] source = null;
 		try {
 			SourceMapper sourceMapper = this.openable.getSourceMapper();
 			if (sourceMapper != null) {
 				IType type = ((ClassFile)this.openable).getType();
 				source = sourceMapper.findSource(type, sourceFileName);
 			}
 		} catch (JavaModelException e) {
 		}
 		return source;
 	}
 	/*
 	 * Returns the source file name of the class file.
 	 * Returns NO_SOURCE_FILE_NAME if not found.
 	 */
 	private String getSourceFileName() {
 		if (this.sourceFileName != null) return this.sourceFileName;
 		this.sourceFileName = NO_SOURCE_FILE_NAME;
 		try {
 			SourceMapper sourceMapper = this.openable.getSourceMapper();
 			if (sourceMapper != null) {
 				IType type = ((ClassFile)this.openable).getType();
 				ClassFileReader reader = this.locator.classFileReader(type);
 				if (reader != null) {
 					this.sourceFileName = sourceMapper.findSourceFileName(type, reader);
 				}
 			}
 		} catch (JavaModelException e) {
 		}
 		return this.sourceFileName;
 	}
 	public char[] getContents() {
 		char[] source = null;
 		try {
 			if (this.openable instanceof WorkingCopy) {
 				IBuffer buffer = this.openable.getBuffer();
 				if (buffer == null) return null;
 				source = buffer.getCharacters();
 			} else if (this.openable instanceof CompilationUnit) {
 				source = Util.getResourceContentsAsCharArray((IFile)this.resource);
 			} else if (this.openable instanceof ClassFile) {
 				source = findClassFileSource();
 			}
 		} catch (JavaModelException e) {
 		}
 		if (source == null) return CharOperation.NO_CHAR;
 		return source;
 	}
 	/*
 	 * Returns the fully qualified name of the main type of the compilation unit
 	 * or the main type of the .java file that defined the class file.
 	 */
 	private char[] getQualifiedName() {
 		if (this.openable instanceof CompilationUnit) {
 			// get file name
 			String fileName = this.resource.getFullPath().lastSegment();
 			// get main type name
 			char[] mainTypeName = fileName.substring(0, fileName.length()-5).toCharArray();
 			CompilationUnit cu = (CompilationUnit)this.openable;
 			return cu.getType(new String(mainTypeName)).getFullyQualifiedName().toCharArray();
 		} else if (this.openable instanceof ClassFile) {
 			String sourceFileName = getSourceFileName();
 			if (sourceFileName == NO_SOURCE_FILE_NAME) {
 				try {
 					return ((ClassFile)this.openable).getType().getFullyQualifiedName('.').toCharArray();
 				} catch (JavaModelException e) {
 					return null;
 				}
 			}
 			String simpleName = sourceFileName.substring(0, sourceFileName.length()-5); // length-".java".length()
 			String pkgName = this.openable.getParent().getElementName();
 			if (pkgName.length() == 0) {
 				return simpleName.toCharArray();
 			} else {
 				return (pkgName + '.' + simpleName).toCharArray();
 			}
 		} else {
 			return null;
 		}
 	}
 	public int hashCode() {
 		if (this.compoundName == null) return super.hashCode();
 		int hashCode = 0;
 		for (int i = 0, length = this.compoundName.length; i < length; i++) {
 			hashCode += CharOperation.hashCode(this.compoundName[i]);
 		}
 		return hashCode;
 	}

 	public char[] getMainTypeName() {
 		return null; // cannot know the main type name without opening .java or .class file
 		                  // see http://bugs.eclipse.org/bugs/show_bug.cgi?id=32182
 	}
 	public char[][] getPackageName() {
 		int length;
 		if ((length = this.compoundName.length) > 1) {
 			return CharOperation.subarray(this.compoundName, 0, length-1);
 		} else {
 			return CharOperation.NO_CHAR_CHAR;
 		}
 	}
 	/**
 	 * Locate declaration in the current class file. This class file is always in a jar.
 	 */
 	public void locateMatchesInClassFile() throws CoreException {
 		org.eclipse.jdt.internal.core.ClassFile classFile = (org.eclipse.jdt.internal.core.ClassFile)this.openable;
 		IBinaryType info = this.locator.getBinaryInfo(classFile, this.resource);
 		if (info == null)
 			return; // unable to go further

 		// check class definition
 		BinaryType binaryType = (BinaryType)classFile.getType();
 		if (this.locator.pattern.matchesBinary(info, null)) {
 			this.locator.reportBinaryMatch(binaryType, info, IJavaSearchResultCollector.EXACT_MATCH);
 		}

 		boolean compilationAborted = false;
 		if (this.locator.pattern.needsResolve) {
 			// resolve
 			BinaryTypeBinding binding = null;
 			try {
 				binding = this.locator.cacheBinaryType(binaryType);
 				if (binding != null) {
 					// filter out element not in hierarchy scope
 					if (this.locator.hierarchyResolver != null
 							&& !this.locator.hierarchyResolver.subOrSuperOfFocus(binding)) {
 						return;
 					}

 					// check methods
 					MethodBinding[] methods = binding.methods();
 					for (int i = 0; i < methods.length; i++) {
 						MethodBinding method = methods[i];
 						int level = this.locator.pattern.matchLevel(method);
 						switch (level) {
 							case SearchPattern.IMPOSSIBLE_MATCH:
 							case SearchPattern.INACCURATE_MATCH:
 								break;
 							default:
 								IMethod methodHandle =
 									binaryType.getMethod(
 										new String(method.isConstructor() ? binding.compoundName[binding.compoundName.length-1] : method.selector),
 										Signature.getParameterTypes(new String(method.signature()).replace('/', '.'))
 									);
 								this.locator.reportBinaryMatch(
 									methodHandle,
 									info,
 									level == SearchPattern.ACCURATE_MATCH ?
 										IJavaSearchResultCollector.EXACT_MATCH :
 										IJavaSearchResultCollector.POTENTIAL_MATCH);
 						}
 					}

 					// check fields
 					FieldBinding[] fields = binding.fields();
 					for (int i = 0; i < fields.length; i++) {
 						FieldBinding field = fields[i];
 						int level = this.locator.pattern.matchLevel(field);
 						switch (level) {
 							case SearchPattern.IMPOSSIBLE_MATCH:
 							case SearchPattern.INACCURATE_MATCH:
 								break;
 							default:
 								IField fieldHandle = binaryType.getField(new String(field.name));
 								this.locator.reportBinaryMatch(
 									fieldHandle,
 									info,
 									level == SearchPattern.ACCURATE_MATCH ?
 										IJavaSearchResultCollector.EXACT_MATCH :
 										IJavaSearchResultCollector.POTENTIAL_MATCH);
 						}
 					}
 				}
 			} catch (AbortCompilation e) {
 				binding = null;
 			}

 			// no need to check binary info if resolve was successful
 			compilationAborted = binding == null;
 			if (!compilationAborted) return;
 		}

 		// if compilation was aborted it is a problem with the class path:
 		// report as a potential match if binary info matches the pattern
 		int accuracy = compilationAborted ? IJavaSearchResultCollector.POTENTIAL_MATCH : IJavaSearchResultCollector.EXACT_MATCH;

 		// check methods
 		IBinaryMethod[] methods = info.getMethods();
 		int length = methods == null ? 0 : methods.length;
 		for (int i = 0; i < length; i++) {
 			IBinaryMethod method = methods[i];
 			if (this.locator.pattern.matchesBinary(method, info)) {
 				IMethod methodHandle =
 					binaryType.getMethod(
 						new String(method.isConstructor() ? info.getName() : method.getSelector()),
 						Signature.getParameterTypes(new String(method.getMethodDescriptor()).replace('/', '.'))
 					);
 				this.locator.reportBinaryMatch(methodHandle, info, accuracy);
 			}
 		}

 		// check fields
 		IBinaryField[] fields = info.getFields();
 		length = fields == null ? 0 : fields.length;
 		for (int i = 0; i < length; i++) {
 			IBinaryField field = fields[i];
 			if (this.locator.pattern.matchesBinary(field, info)) {
 				IField fieldHandle = binaryType.getField(new String(field.getName()));
 				this.locator.reportBinaryMatch(fieldHandle, info, accuracy);
 			}
 		}
 	}
 	public String toString() {
 		return this.openable == null ? "Fake PotentialMatch" : this.openable.toString(); //$NON-NLS-1$
 	}

 	public char[] getFileName() {
 		return this.openable.getPath().toString().toCharArray();
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.core.search.matching;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.jdt.core.*;
	import org.eclipse.jdt.core.compiler.CharOperation;
	import org.eclipse.jdt.core.search.IJavaSearchResultCollector;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
	import org.eclipse.jdt.internal.compiler.env.*;
	import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
	import org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding;
	import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
	import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
	import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
	import org.eclipse.jdt.internal.core.*;

	public class PotentialMatch implements ICompilationUnit {
	public static final String NO_SOURCE_FILE_NAME = "NO SOURCE FILE NAME"; //$NON-NLS-1$

	private MatchLocator2 locator;
	public IResource resource;
	public Openable openable;
	public char[][] compoundName;
	MatchingNodeSet matchingNodeSet;
	private String sourceFileName;

	public PotentialMatch(
	MatchLocator2 locator,
	IResource resource,
	Openable openable) {
	this.locator = locator;
	this.resource = resource;
	this.openable = openable;
	this.matchingNodeSet = new MatchingNodeSet(locator);
	char[] qualifiedName = getQualifiedName();
	if (qualifiedName != null) {
	this.compoundName = CharOperation.splitOn('.', qualifiedName);
	}
	}
	public boolean equals(Object obj) {
	if (this.compoundName == null) return super.equals(obj);
	if (!(obj instanceof PotentialMatch)) return false;
	return CharOperation.equals(this.compoundName, ((PotentialMatch)obj).compoundName);
	}

	/*
	* Finds the source of this class file.
	* Returns null if not found.
	*/
	private char[] findClassFileSource() {
	String sourceFileName = getSourceFileName();
	if (sourceFileName == NO_SOURCE_FILE_NAME) return null;
	char[] source = null;
	try {
	SourceMapper sourceMapper = this.openable.getSourceMapper();
	if (sourceMapper != null) {
	IType type = ((ClassFile)this.openable).getType();
	source = sourceMapper.findSource(type, sourceFileName);
	}
	} catch (JavaModelException e) {
	}
	return source;
	}
	/*
	* Returns the source file name of the class file.
	* Returns NO_SOURCE_FILE_NAME if not found.
	*/
	private String getSourceFileName() {
	if (this.sourceFileName != null) return this.sourceFileName;
	this.sourceFileName = NO_SOURCE_FILE_NAME;
	try {
	SourceMapper sourceMapper = this.openable.getSourceMapper();
	if (sourceMapper != null) {
	IType type = ((ClassFile)this.openable).getType();
	ClassFileReader reader = this.locator.classFileReader(type);
	if (reader != null) {
	this.sourceFileName = sourceMapper.findSourceFileName(type, reader);
	}
	}
	} catch (JavaModelException e) {
	}
	return this.sourceFileName;
	}
	public char[] getContents() {
	char[] source = null;
	try {
	if (this.openable instanceof WorkingCopy) {
	IBuffer buffer = this.openable.getBuffer();
	if (buffer == null) return null;
	source = buffer.getCharacters();
	} else if (this.openable instanceof CompilationUnit) {
	source = Util.getResourceContentsAsCharArray((IFile)this.resource);
	} else if (this.openable instanceof ClassFile) {
	source = findClassFileSource();
	}
	} catch (JavaModelException e) {
	}
	if (source == null) return CharOperation.NO_CHAR;
	return source;
	}
	/*
	* Returns the fully qualified name of the main type of the compilation unit
	* or the main type of the .java file that defined the class file.
	*/
	private char[] getQualifiedName() {
	if (this.openable instanceof CompilationUnit) {
	// get file name
	String fileName = this.resource.getFullPath().lastSegment();
	// get main type name
	char[] mainTypeName = fileName.substring(0, fileName.length()-5).toCharArray();
	CompilationUnit cu = (CompilationUnit)this.openable;
	return cu.getType(new String(mainTypeName)).getFullyQualifiedName().toCharArray();
	} else if (this.openable instanceof ClassFile) {
	String sourceFileName = getSourceFileName();
	if (sourceFileName == NO_SOURCE_FILE_NAME) {
	try {
	return ((ClassFile)this.openable).getType().getFullyQualifiedName('.').toCharArray();
	} catch (JavaModelException e) {
	return null;
	}
	}
	String simpleName = sourceFileName.substring(0, sourceFileName.length()-5); // length-".java".length()
	String pkgName = this.openable.getParent().getElementName();
	if (pkgName.length() == 0) {
	return simpleName.toCharArray();
	} else {
	return (pkgName + '.' + simpleName).toCharArray();
	}
	} else {
	return null;
	}
	}
	public int hashCode() {
	if (this.compoundName == null) return super.hashCode();
	int hashCode = 0;
	for (int i = 0, length = this.compoundName.length; i < length; i++) {
	hashCode += CharOperation.hashCode(this.compoundName[i]);
	}
	return hashCode;
	}

	public char[] getMainTypeName() {
	return null; // cannot know the main type name without opening .java or .class file
	// see http://bugs.eclipse.org/bugs/show_bug.cgi?id=32182
	}
	public char[][] getPackageName() {
	int length;
	if ((length = this.compoundName.length) > 1) {
	return CharOperation.subarray(this.compoundName, 0, length-1);
	} else {
	return CharOperation.NO_CHAR_CHAR;
	}
	}
	/**
	* Locate declaration in the current class file. This class file is always in a jar.
	*/
	public void locateMatchesInClassFile() throws CoreException {
	org.eclipse.jdt.internal.core.ClassFile classFile = (org.eclipse.jdt.internal.core.ClassFile)this.openable;
	IBinaryType info = this.locator.getBinaryInfo(classFile, this.resource);
	if (info == null)
	return; // unable to go further

	// check class definition
	BinaryType binaryType = (BinaryType)classFile.getType();
	if (this.locator.pattern.matchesBinary(info, null)) {
	this.locator.reportBinaryMatch(binaryType, info, IJavaSearchResultCollector.EXACT_MATCH);
	}

	boolean compilationAborted = false;
	if (this.locator.pattern.needsResolve) {
	// resolve
	BinaryTypeBinding binding = null;
	try {
	binding = this.locator.cacheBinaryType(binaryType);
	if (binding != null) {
	// filter out element not in hierarchy scope
	if (this.locator.hierarchyResolver != null
	&& !this.locator.hierarchyResolver.subOrSuperOfFocus(binding)) {
	return;
	}

	// check methods
	MethodBinding[] methods = binding.methods();
	for (int i = 0; i < methods.length; i++) {
	MethodBinding method = methods[i];
	int level = this.locator.pattern.matchLevel(method);
	switch (level) {
	case SearchPattern.IMPOSSIBLE_MATCH:
	case SearchPattern.INACCURATE_MATCH:
	break;
	default:
	IMethod methodHandle =
	binaryType.getMethod(
	new String(method.isConstructor() ? binding.compoundName[binding.compoundName.length-1] : method.selector),
	Signature.getParameterTypes(new String(method.signature()).replace('/', '.'))
	);
	this.locator.reportBinaryMatch(
	methodHandle,
	info,
	level == SearchPattern.ACCURATE_MATCH ?
	IJavaSearchResultCollector.EXACT_MATCH :
	IJavaSearchResultCollector.POTENTIAL_MATCH);
	}
	}

	// check fields
	FieldBinding[] fields = binding.fields();
	for (int i = 0; i < fields.length; i++) {
	FieldBinding field = fields[i];
	int level = this.locator.pattern.matchLevel(field);
	switch (level) {
	case SearchPattern.IMPOSSIBLE_MATCH:
	case SearchPattern.INACCURATE_MATCH:
	break;
	default:
	IField fieldHandle = binaryType.getField(new String(field.name));
	this.locator.reportBinaryMatch(
	fieldHandle,
	info,
	level == SearchPattern.ACCURATE_MATCH ?
	IJavaSearchResultCollector.EXACT_MATCH :
	IJavaSearchResultCollector.POTENTIAL_MATCH);
	}
	}
	}
	} catch (AbortCompilation e) {
	binding = null;
	}

	// no need to check binary info if resolve was successful
	compilationAborted = binding == null;
	if (!compilationAborted) return;
	}

	// if compilation was aborted it is a problem with the class path:
	// report as a potential match if binary info matches the pattern
	int accuracy = compilationAborted ? IJavaSearchResultCollector.POTENTIAL_MATCH : IJavaSearchResultCollector.EXACT_MATCH;

	// check methods
	IBinaryMethod[] methods = info.getMethods();
	int length = methods == null ? 0 : methods.length;
	for (int i = 0; i < length; i++) {
	IBinaryMethod method = methods[i];
	if (this.locator.pattern.matchesBinary(method, info)) {
	IMethod methodHandle =
	binaryType.getMethod(
	new String(method.isConstructor() ? info.getName() : method.getSelector()),
	Signature.getParameterTypes(new String(method.getMethodDescriptor()).replace('/', '.'))
	);
	this.locator.reportBinaryMatch(methodHandle, info, accuracy);
	}
	}

	// check fields
	IBinaryField[] fields = info.getFields();
	length = fields == null ? 0 : fields.length;
	for (int i = 0; i < length; i++) {
	IBinaryField field = fields[i];
	if (this.locator.pattern.matchesBinary(field, info)) {
	IField fieldHandle = binaryType.getField(new String(field.getName()));
	this.locator.reportBinaryMatch(fieldHandle, info, accuracy);
	}
	}
	}
	public String toString() {
	return this.openable == null ? "Fake PotentialMatch" : this.openable.toString(); //$NON-NLS-1$
	}

	public char[] getFileName() {
	return this.openable.getPath().toString().toCharArray();
	}

	}