/*******************************************************************************
* Copyright (c) 2000, 2010 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.codeassist;
import java.util.Locale;
import java.util.Map;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jdt.core.WorkingCopyOwner;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.core.compiler.IProblem;
import org.eclipse.jdt.core.compiler.InvalidInputException;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.core.search.TypeNameMatch;
import org.eclipse.jdt.core.search.TypeNameMatchRequestor;
import org.eclipse.jdt.internal.codeassist.impl.AssistParser;
import org.eclipse.jdt.internal.codeassist.impl.Engine;
import org.eclipse.jdt.internal.codeassist.select.SelectionNodeFound;
import org.eclipse.jdt.internal.codeassist.select.SelectionOnImportReference;
import org.eclipse.jdt.internal.codeassist.select.SelectionOnPackageReference;
import org.eclipse.jdt.internal.codeassist.select.SelectionOnQualifiedTypeReference;
import org.eclipse.jdt.internal.codeassist.select.SelectionOnSingleTypeReference;
import org.eclipse.jdt.internal.codeassist.select.SelectionParser;
import org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.eclipse.jdt.internal.compiler.CompilationResult;
import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ImportReference;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeParameter;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.eclipse.jdt.internal.compiler.env.AccessRestriction;
import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.jdt.internal.compiler.env.ISourceType;
import org.eclipse.jdt.internal.compiler.lookup.ArrayBinding;
import org.eclipse.jdt.internal.compiler.lookup.BaseTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.Binding;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.eclipse.jdt.internal.compiler.lookup.ClassScope;
import org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope;
import org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
import org.eclipse.jdt.internal.compiler.lookup.LocalTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;
import org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment;
import org.eclipse.jdt.internal.compiler.lookup.MemberTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.MethodBinding;
import org.eclipse.jdt.internal.compiler.lookup.MethodScope;
import org.eclipse.jdt.internal.compiler.lookup.PackageBinding;
import org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemFieldBinding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemReasons;
import org.eclipse.jdt.internal.compiler.lookup.ProblemReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.SyntheticMethodBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding;
import org.eclipse.jdt.internal.compiler.parser.Scanner;
import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
import org.eclipse.jdt.internal.compiler.parser.SourceTypeConverter;
import org.eclipse.jdt.internal.compiler.parser.TerminalTokens;
import org.eclipse.jdt.internal.compiler.problem.AbortCompilation;
import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
import org.eclipse.jdt.internal.compiler.util.HashtableOfObject;
import org.eclipse.jdt.internal.compiler.util.ObjectVector;
import org.eclipse.jdt.internal.core.BinaryTypeConverter;
import org.eclipse.jdt.internal.core.ClassFile;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.internal.core.SearchableEnvironment;
import org.eclipse.jdt.internal.core.SelectionRequestor;
import org.eclipse.jdt.internal.core.SourceType;
import org.eclipse.jdt.internal.core.SourceTypeElementInfo;
import org.eclipse.jdt.internal.core.search.BasicSearchEngine;
import org.eclipse.jdt.internal.core.search.TypeNameMatchRequestorWrapper;
import org.eclipse.jdt.internal.core.util.ASTNodeFinder;
import org.eclipse.jdt.internal.core.util.HashSetOfCharArrayArray;
/**
* The selection engine is intended to infer the nature of a selected name in some source code. This
* name can be qualified.
*
* Selection is resolving context using a name environment (no need to search), assuming the source
* where selection occurred is correct and will not perform any completion attempt. If this was the
* desired behavior, a call to the CompletionEngine should be performed instead.
*/
public final class SelectionEngine extends Engine implements ISearchRequestor {
private static class SelectionTypeNameMatchRequestorWrapper extends TypeNameMatchRequestorWrapper {
class AcceptedType {
public int modifiers;
public char[] packageName;
public char[] simpleTypeName;
public String path;
public AccessRestriction access;
public AcceptedType(int modifiers, char[] packageName, char[] simpleTypeName, String path, AccessRestriction access) {
this.modifiers= modifiers;
this.packageName= packageName;
this.simpleTypeName= simpleTypeName;
this.path= path;
this.access= access;
}
}
private ImportReference[] importReferences;
private boolean importCachesNodeInitialized= false;
private ImportReference[] onDemandImportsNodeCache;
private int onDemandImportsNodeCacheCount;
private char[][][] importsNodeCache;
private int importsNodeCacheCount;
private HashtableOfObject onDemandFound= new HashtableOfObject();
private ObjectVector notImportedFound= new ObjectVector();
public SelectionTypeNameMatchRequestorWrapper(TypeNameMatchRequestor requestor, IJavaSearchScope scope, ImportReference[] importReferences) {
super(requestor, scope);
this.importReferences= importReferences;
}
public void acceptType(int modifiers, char[] packageName, char[] simpleTypeName, char[][] enclosingTypeNames, String path, AccessRestriction access) {
if (enclosingTypeNames != null && enclosingTypeNames.length > 0)
return;
if (!this.importCachesNodeInitialized)
initializeImportNodeCaches();
char[] fullyQualifiedTypeName= CharOperation.concat(packageName, simpleTypeName, '.');
for (int i= 0; i < this.importsNodeCacheCount; i++) {
char[][] importName= this.importsNodeCache[i];
if (CharOperation.equals(importName[0], simpleTypeName)) {
if (CharOperation.equals(importName[1], fullyQualifiedTypeName)) {
super.acceptType(modifiers, packageName, simpleTypeName, enclosingTypeNames, path, access);
}
return;
}
}
for (int i= 0; i < this.onDemandImportsNodeCacheCount; i++) {
char[][] importName= this.onDemandImportsNodeCache[i].tokens;
char[] importFlatName= CharOperation.concatWith(importName, '.');
if (CharOperation.equals(importFlatName, packageName)) {
this.onDemandFound.put(simpleTypeName, simpleTypeName);
super.acceptType(modifiers, packageName, simpleTypeName, enclosingTypeNames, path, access);
return;
}
}
this.notImportedFound.add(new AcceptedType(modifiers, packageName, simpleTypeName, path, access));
}
public void acceptNotImported() {
int size= this.notImportedFound.size();
for (int i= 0; i < size; i++) {
AcceptedType acceptedType= (AcceptedType)this.notImportedFound.elementAt(i);
if (this.onDemandFound.get(acceptedType.simpleTypeName) == null) {
super.acceptType(
acceptedType.modifiers,
acceptedType.packageName,
acceptedType.simpleTypeName,
null,
acceptedType.path,
acceptedType.access);
}
}
}
public void initializeImportNodeCaches() {
int length= this.importReferences == null ? 0 : this.importReferences.length;
for (int i= 0; i < length; i++) {
ImportReference importReference= this.importReferences[i];
if ((importReference.bits & ASTNode.OnDemand) != 0) {
if (this.onDemandImportsNodeCache == null) {
this.onDemandImportsNodeCache= new ImportReference[length - i];
}
this.onDemandImportsNodeCache[this.onDemandImportsNodeCacheCount++]=
importReference;
} else {
if (this.importsNodeCache == null) {
this.importsNodeCache= new char[length - i][][];
}
this.importsNodeCache[this.importsNodeCacheCount++]= new char[][] {
importReference.tokens[importReference.tokens.length - 1],
CharOperation.concatWith(importReference.tokens, '.')
};
}
}
this.importCachesNodeInitialized= true;
}
}
public static boolean DEBUG= false;
public static boolean PERF= false;
SelectionParser parser;
ISelectionRequestor requestor;
WorkingCopyOwner owner;
boolean acceptedAnswer;
private int actualSelectionStart;
private int actualSelectionEnd;
private char[] selectedIdentifier;
private char[][][] acceptedClasses;
private int[] acceptedClassesModifiers;
private char[][][] acceptedInterfaces;
private int[] acceptedInterfacesModifiers;
private char[][][] acceptedEnums;
private int[] acceptedEnumsModifiers;
private char[][][] acceptedAnnotations;
private int[] acceptedAnnotationsModifiers;
int acceptedClassesCount;
int acceptedInterfacesCount;
int acceptedEnumsCount;
int acceptedAnnotationsCount;
boolean noProposal= true;
CategorizedProblem problem= null;
/**
* The SelectionEngine is responsible for computing the selected object.
*
* It requires a searchable name environment, which supports some specific search APIs, and a
* requestor to feed back the results to a UI.
*
* @param nameEnvironment org.eclipse.jdt.internal.core.SearchableEnvironment used to resolve
* type/package references and search for types/packages based on partial names.
*
* @param requestor org.eclipse.jdt.internal.codeassist.ISelectionRequestor since the engine
* might produce answers of various forms, the engine is associated with a requestor
* able to accept all possible completions.
*
* @param settings java.util.Map set of options used to configure the code assist engine.
*/
public SelectionEngine(
SearchableEnvironment nameEnvironment,
ISelectionRequestor requestor,
Map settings,
WorkingCopyOwner owner) {
super(settings);
this.requestor= requestor;
this.nameEnvironment= nameEnvironment;
ProblemReporter problemReporter=
new ProblemReporter(
DefaultErrorHandlingPolicies.proceedWithAllProblems(),
this.compilerOptions,
new DefaultProblemFactory(Locale.getDefault())) {
public CategorizedProblem createProblem(
char[] fileName,
int problemId,
String[] problemArguments,
String[] messageArguments,
int severity,
int problemStartPosition,
int problemEndPosition,
int lineNumber,
int columnNumber) {
CategorizedProblem pb= super.createProblem(
fileName,
problemId,
problemArguments,
messageArguments,
severity,
problemStartPosition,
problemEndPosition,
lineNumber,
columnNumber);
if (SelectionEngine.this.problem == null && pb.isError() && (pb.getID() & IProblem.Syntax) == 0) {
SelectionEngine.this.problem= pb;
}
return pb;
}
};
this.lookupEnvironment=
new LookupEnvironment(this, this.compilerOptions, problemReporter, nameEnvironment);
this.parser= new SelectionParser(problemReporter);
this.owner= owner;
}
public void acceptConstructor(
int modifiers,
char[] simpleTypeName,
int parameterCount,
char[] signature,
char[][] parameterTypes,
char[][] parameterNames,
int typeModifiers,
char[] packageName,
int extraFlags,
String path,
AccessRestriction access) {
// constructors aren't searched
}
public void acceptType(char[] packageName, char[] simpleTypeName, char[][] enclosingTypeNames, int modifiers, AccessRestriction accessRestriction) {
char[] typeName= enclosingTypeNames == null ?
simpleTypeName :
CharOperation.concat(
CharOperation.concatWith(enclosingTypeNames, '.'),
simpleTypeName,
'.');
if (CharOperation.equals(simpleTypeName, this.selectedIdentifier)) {
char[] flatEnclosingTypeNames=
enclosingTypeNames == null || enclosingTypeNames.length == 0 ?
null :
CharOperation.concatWith(enclosingTypeNames, '.');
if (mustQualifyType(packageName, simpleTypeName, flatEnclosingTypeNames, modifiers)) {
int length= 0;
int kind= modifiers & (ClassFileConstants.AccInterface | ClassFileConstants.AccEnum | ClassFileConstants.AccAnnotation);
switch (kind) {
case ClassFileConstants.AccAnnotation:
case ClassFileConstants.AccAnnotation | ClassFileConstants.AccInterface:
char[][] acceptedAnnotation= new char[2][];
acceptedAnnotation[0]= packageName;
acceptedAnnotation[1]= typeName;
if (this.acceptedAnnotations == null) {
this.acceptedAnnotations= new char[10][][];
this.acceptedAnnotationsModifiers= new int[10];
this.acceptedAnnotationsCount= 0;
}
length= this.acceptedAnnotations.length;
if (length == this.acceptedAnnotationsCount) {
int newLength= (length + 1) * 2;
System.arraycopy(this.acceptedAnnotations, 0, this.acceptedAnnotations= new char[newLength][][], 0, length);
System.arraycopy(this.acceptedAnnotationsModifiers, 0, this.acceptedAnnotationsModifiers= new int[newLength], 0, length);
}
this.acceptedAnnotationsModifiers[this.acceptedAnnotationsCount]= modifiers;
this.acceptedAnnotations[this.acceptedAnnotationsCount++]= acceptedAnnotation;
break;
case ClassFileConstants.AccEnum:
char[][] acceptedEnum= new char[2][];
acceptedEnum[0]= packageName;
acceptedEnum[1]= typeName;
if (this.acceptedEnums == null) {
this.acceptedEnums= new char[10][][];
this.acceptedEnumsModifiers= new int[10];
this.acceptedEnumsCount= 0;
}
length= this.acceptedEnums.length;
if (length == this.acceptedEnumsCount) {
int newLength= (length + 1) * 2;
System.arraycopy(this.acceptedEnums, 0, this.acceptedEnums= new char[newLength][][], 0, length);
System.arraycopy(this.acceptedEnumsModifiers, 0, this.acceptedEnumsModifiers= new int[newLength], 0, length);
}
this.acceptedEnumsModifiers[this.acceptedEnumsCount]= modifiers;
this.acceptedEnums[this.acceptedEnumsCount++]= acceptedEnum;
break;
case ClassFileConstants.AccInterface:
char[][] acceptedInterface= new char[2][];
acceptedInterface[0]= packageName;
acceptedInterface[1]= typeName;
if (this.acceptedInterfaces == null) {
this.acceptedInterfaces= new char[10][][];
this.acceptedInterfacesModifiers= new int[10];
this.acceptedInterfacesCount= 0;
}
length= this.acceptedInterfaces.length;
if (length == this.acceptedInterfacesCount) {
int newLength= (length + 1) * 2;
System.arraycopy(this.acceptedInterfaces, 0, this.acceptedInterfaces= new char[newLength][][], 0, length);
System.arraycopy(this.acceptedInterfacesModifiers, 0, this.acceptedInterfacesModifiers= new int[newLength], 0, length);
}
this.acceptedInterfacesModifiers[this.acceptedInterfacesCount]= modifiers;
this.acceptedInterfaces[this.acceptedInterfacesCount++]= acceptedInterface;
break;
default:
char[][] acceptedClass= new char[2][];
acceptedClass[0]= packageName;
acceptedClass[1]= typeName;
if (this.acceptedClasses == null) {
this.acceptedClasses= new char[10][][];
this.acceptedClassesModifiers= new int[10];
this.acceptedClassesCount= 0;
}
length= this.acceptedClasses.length;
if (length == this.acceptedClassesCount) {
int newLength= (length + 1) * 2;
System.arraycopy(this.acceptedClasses, 0, this.acceptedClasses= new char[newLength][][], 0, length);
System.arraycopy(this.acceptedClassesModifiers, 0, this.acceptedClassesModifiers= new int[newLength], 0, length);
}
this.acceptedClassesModifiers[this.acceptedClassesCount]= modifiers;
this.acceptedClasses[this.acceptedClassesCount++]= acceptedClass;
break;
}
} else {
this.noProposal= false;
this.requestor.acceptType(
packageName,
typeName,
modifiers,
false,
null,
this.actualSelectionStart,
this.actualSelectionEnd);
this.acceptedAnswer= true;
}
}
}
/**
* One result of the search consists of a new package.
*
* @param packageName char[]
*
* NOTE - All package names are presented in their readable form: Package names are
* in the form "a.b.c". The default package is represented by an empty array.
*/
public void acceptPackage(char[] packageName) {
// implementation of interface method
}
private void acceptQualifiedTypes() {
if (this.acceptedClasses != null) {
this.acceptedAnswer= true;
for (int i= 0; i < this.acceptedClassesCount; i++) {
this.noProposal= false;
this.requestor.acceptType(
this.acceptedClasses[i][0],
this.acceptedClasses[i][1],
this.acceptedClassesModifiers[i],
false,
null,
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedClasses= null;
this.acceptedClassesModifiers= null;
this.acceptedClassesCount= 0;
}
if (this.acceptedInterfaces != null) {
this.acceptedAnswer= true;
for (int i= 0; i < this.acceptedInterfacesCount; i++) {
this.noProposal= false;
this.requestor.acceptType(
this.acceptedInterfaces[i][0],
this.acceptedInterfaces[i][1],
this.acceptedInterfacesModifiers[i],
false,
null,
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedInterfaces= null;
this.acceptedInterfacesModifiers= null;
this.acceptedInterfacesCount= 0;
}
if (this.acceptedAnnotations != null) {
this.acceptedAnswer= true;
for (int i= 0; i < this.acceptedAnnotationsCount; i++) {
this.noProposal= false;
this.requestor.acceptType(
this.acceptedAnnotations[i][0],
this.acceptedAnnotations[i][1],
this.acceptedAnnotationsModifiers[i],
false,
null,
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedAnnotations= null;
this.acceptedAnnotationsModifiers= null;
this.acceptedAnnotationsCount= 0;
}
if (this.acceptedEnums != null) {
this.acceptedAnswer= true;
for (int i= 0; i < this.acceptedEnumsCount; i++) {
this.noProposal= false;
this.requestor.acceptType(
this.acceptedEnums[i][0],
this.acceptedEnums[i][1],
this.acceptedEnumsModifiers[i],
false,
null,
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedEnums= null;
this.acceptedEnumsModifiers= null;
this.acceptedEnumsCount= 0;
}
}
private boolean checkSelection(
char[] source,
int selectionStart,
int selectionEnd) {
Scanner scanner=
new Scanner(
false /*comment*/,
false /*whitespace*/,
false /*nls*/,
this.compilerOptions.sourceLevel,
this.compilerOptions.complianceLevel,
null/*taskTag*/,
null/*taskPriorities*/,
true /*taskCaseSensitive*/);
scanner.setSource(source);
int lastIdentifierStart= -1;
int lastIdentifierEnd= -1;
char[] lastIdentifier= null;
int token;
if (selectionStart > selectionEnd) {
int end= source.length - 1;
// compute start position of current line
int currentPosition= selectionStart - 1;
int nextCharacterPosition= selectionStart;
char currentCharacter= ' ';
try {
lineLoop: while (currentPosition > 0) {
if (source[currentPosition] == '\\' && source[currentPosition + 1] == 'u') {
int pos= currentPosition + 2;
int c1= 0, c2= 0, c3= 0, c4= 0;
while (source[pos] == 'u') {
pos++;
}
int endOfUnicode= pos + 3;
if (end < endOfUnicode) {
if (endOfUnicode < source.length) {
end= endOfUnicode;
} else {
return false; // not enough characters to decode an unicode
}
}
if ((c1= ScannerHelper.getNumericValue(source[pos++])) > 15
|| c1 < 0
|| (c2= ScannerHelper.getNumericValue(source[pos++])) > 15
|| c2 < 0
|| (c3= ScannerHelper.getNumericValue(source[pos++])) > 15
|| c3 < 0
|| (c4= ScannerHelper.getNumericValue(source[pos++])) > 15
|| c4 < 0) {
return false;
} else {
currentCharacter= (char)(((c1 * 16 + c2) * 16 + c3) * 16 + c4);
nextCharacterPosition= pos;
}
} else {
currentCharacter= source[currentPosition];
nextCharacterPosition= currentPosition + 1;
}
switch (currentCharacter) {
case '\r':
case '\n':
case '/':
case '"':
case '\'':
break lineLoop;
}
currentPosition--;
}
} catch (ArrayIndexOutOfBoundsException e) {
return false;
}
// compute start and end of the last token
scanner.resetTo(nextCharacterPosition, end);
isolateLastName: do {
try {
token= scanner.getNextToken();
} catch (InvalidInputException e) {
return false;
}
switch (token) {
case TerminalTokens.TokenNamethis:
case TerminalTokens.TokenNamesuper:
case TerminalTokens.TokenNameIdentifier:
if (scanner.startPosition <= selectionStart && selectionStart <= scanner.currentPosition) {
if (scanner.currentPosition == scanner.eofPosition) {
int temp= scanner.eofPosition;
scanner.eofPosition= scanner.source.length;
while (scanner.getNextCharAsJavaIdentifierPart()) {/*empty*/
}
scanner.eofPosition= temp;
}
lastIdentifierStart= scanner.startPosition;
lastIdentifierEnd= scanner.currentPosition - 1;
lastIdentifier= scanner.getCurrentTokenSource();
break isolateLastName;
}
break;
}
} while (token != TerminalTokens.TokenNameEOF);
} else {
scanner.resetTo(selectionStart, selectionEnd);
boolean expectingIdentifier= true;
do {
try {
token= scanner.getNextToken();
} catch (InvalidInputException e) {
return false;
}
switch (token) {
case TerminalTokens.TokenNamethis:
case TerminalTokens.TokenNamesuper:
case TerminalTokens.TokenNameIdentifier:
if (!expectingIdentifier)
return false;
lastIdentifier= scanner.getCurrentTokenSource();
lastIdentifierStart= scanner.startPosition;
lastIdentifierEnd= scanner.currentPosition - 1;
if (lastIdentifierEnd > selectionEnd) {
lastIdentifierEnd= selectionEnd;
lastIdentifier= CharOperation.subarray(lastIdentifier, 0, lastIdentifierEnd - lastIdentifierStart + 1);
}
expectingIdentifier= false;
break;
case TerminalTokens.TokenNameDOT:
if (expectingIdentifier)
return false;
expectingIdentifier= true;
break;
case TerminalTokens.TokenNameEOF:
if (expectingIdentifier)
return false;
break;
case TerminalTokens.TokenNameLESS:
if (!checkTypeArgument(scanner))
return false;
break;
case TerminalTokens.TokenNameAT:
if (scanner.startPosition != scanner.initialPosition)
return false;
break;
default:
return false;
}
} while (token != TerminalTokens.TokenNameEOF);
}
if (lastIdentifierStart > 0) {
this.actualSelectionStart= lastIdentifierStart;
this.actualSelectionEnd= lastIdentifierEnd;
this.selectedIdentifier= lastIdentifier;
return true;
}
return false;
}
private boolean checkTypeArgument(Scanner scanner) {
int depth= 1;
int token;
StringBuffer buffer= new StringBuffer();
do {
try {
token= scanner.getNextToken();
} catch (InvalidInputException e) {
return false;
}
switch (token) {
case TerminalTokens.TokenNameLESS:
depth++;
buffer.append(scanner.getCurrentTokenSource());
break;
case TerminalTokens.TokenNameGREATER:
depth--;
buffer.append(scanner.getCurrentTokenSource());
break;
case TerminalTokens.TokenNameRIGHT_SHIFT:
depth-= 2;
buffer.append(scanner.getCurrentTokenSource());
break;
case TerminalTokens.TokenNameUNSIGNED_RIGHT_SHIFT:
depth-= 3;
buffer.append(scanner.getCurrentTokenSource());
break;
case TerminalTokens.TokenNameextends:
case TerminalTokens.TokenNamesuper:
buffer.append(' ');
buffer.append(scanner.getCurrentTokenSource());
buffer.append(' ');
break;
case TerminalTokens.TokenNameCOMMA:
if (depth == 1) {
int length= buffer.length();
char[] typeRef= new char[length];
buffer.getChars(0, length, typeRef, 0);
try {
Signature.createTypeSignature(typeRef, true);
buffer= new StringBuffer();
} catch (IllegalArgumentException e) {
return false;
}
}
break;
default:
buffer.append(scanner.getCurrentTokenSource());
break;
}
if (depth < 0) {
return false;
}
} while (depth != 0 && token != TerminalTokens.TokenNameEOF);
if (depth == 0) {
int length= buffer.length() - 1;
char[] typeRef= new char[length];
buffer.getChars(0, length, typeRef, 0);
try {
Signature.createTypeSignature(typeRef, true);
return true;
} catch (IllegalArgumentException e) {
return false;
}
}
return false;
}
/*
* find all types outside the project scope
*/
private void findAllTypes(char[] prefix) {
try {
IProgressMonitor progressMonitor= new IProgressMonitor() {
boolean isCanceled= false;
public void beginTask(String name, int totalWork) {
// implements interface method
}
public void done() {
// implements interface method
}
public void internalWorked(double work) {
// implements interface method
}
public boolean isCanceled() {
return this.isCanceled;
}
public void setCanceled(boolean value) {
this.isCanceled= value;
}
public void setTaskName(String name) {
// implements interface method
}
public void subTask(String name) {
// implements interface method
}
public void worked(int work) {
// implements interface method
}
};
TypeNameMatchRequestor typeNameMatchRequestor= new TypeNameMatchRequestor() {
public void acceptTypeNameMatch(TypeNameMatch match) {
if (SelectionEngine.this.requestor instanceof SelectionRequestor) {
SelectionEngine.this.noProposal= false;
((SelectionRequestor)SelectionEngine.this.requestor).acceptType(match.getType());
}
}
};
IJavaSearchScope scope= BasicSearchEngine.createWorkspaceScope();
SelectionTypeNameMatchRequestorWrapper requestorWrapper=
new SelectionTypeNameMatchRequestorWrapper(
typeNameMatchRequestor,
scope,
this.unitScope == null ? null : this.unitScope.referenceContext.imports);
org.eclipse.jdt.core.ICompilationUnit[] workingCopies= this.owner == null ? null : JavaModelManager.getJavaModelManager().getWorkingCopies(this.owner, true/*add primary WCs*/);
try {
new BasicSearchEngine(workingCopies).searchAllTypeNames(
null,
SearchPattern.R_EXACT_MATCH,
prefix,
SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE,
IJavaSearchConstants.TYPE,
scope,
requestorWrapper,
IJavaSearchConstants.CANCEL_IF_NOT_READY_TO_SEARCH,
progressMonitor);
} catch (OperationCanceledException e) {
// do nothing
}
requestorWrapper.acceptNotImported();
} catch (JavaModelException e) {
// do nothing
}
}
public AssistParser getParser() {
return this.parser;
}
/*
* Returns whether the given binding is a local/anonymous reference binding, or if its declaring class is
* local.
*/
private boolean isLocal(ReferenceBinding binding) {
if (binding instanceof ParameterizedTypeBinding) {
return isLocal(((ParameterizedTypeBinding)binding).genericType());
}
if (!(binding instanceof SourceTypeBinding))
return false;
if (binding instanceof LocalTypeBinding)
return true;
if (binding instanceof MemberTypeBinding) {
return isLocal(((MemberTypeBinding)binding).enclosingType);
}
return false;
}
/**
* Ask the engine to compute the selection at the specified position of the given compilation
* unit.
*
* @param sourceUnit org.eclipse.jdt.internal.compiler.env.ICompilationUnit the source of the
* current compilation unit.
*
* @param selectionSourceStart int
* @param selectionSourceEnd int a range in the source where the selection is.
*/
public void select(
ICompilationUnit sourceUnit,
int selectionSourceStart,
int selectionSourceEnd) {
char[] source= sourceUnit.getContents();
if (DEBUG) {
System.out.print("SELECTION IN "); //$NON-NLS-1$
System.out.print(sourceUnit.getFileName());
System.out.print(" FROM "); //$NON-NLS-1$
System.out.print(selectionSourceStart);
System.out.print(" TO "); //$NON-NLS-1$
System.out.println(selectionSourceEnd);
System.out.println("SELECTION - Source :"); //$NON-NLS-1$
System.out.println(source);
}
if (!checkSelection(source, selectionSourceStart, selectionSourceEnd)) {
return;
}
if (DEBUG) {
System.out.print("SELECTION - Checked : \""); //$NON-NLS-1$
System.out.print(new String(source, this.actualSelectionStart, this.actualSelectionEnd - this.actualSelectionStart + 1));
System.out.println('"');
}
try {
this.acceptedAnswer= false;
CompilationResult result= new CompilationResult(sourceUnit, 1, 1, this.compilerOptions.maxProblemsPerUnit);
CompilationUnitDeclaration parsedUnit=
this.parser.dietParse(sourceUnit, result, this.actualSelectionStart, this.actualSelectionEnd);
if (parsedUnit != null) {
if (DEBUG) {
System.out.println("SELECTION - Diet AST :"); //$NON-NLS-1$
System.out.println(parsedUnit.toString());
}
// scan the package & import statements first
if (parsedUnit.currentPackage instanceof SelectionOnPackageReference) {
char[][] tokens=
((SelectionOnPackageReference)parsedUnit.currentPackage).tokens;
this.noProposal= false;
this.requestor.acceptPackage(CharOperation.concatWith(tokens, '.'));
return;
}
ImportReference[] imports= parsedUnit.imports;
if (imports != null) {
for (int i= 0, length= imports.length; i < length; i++) {
ImportReference importReference= imports[i];
if (importReference instanceof SelectionOnImportReference) {
char[][] tokens= ((SelectionOnImportReference)importReference).tokens;
this.noProposal= false;
this.requestor.acceptPackage(CharOperation.concatWith(tokens, '.'));
this.nameEnvironment.findTypes(CharOperation.concatWith(tokens, '.'), false, false, IJavaSearchConstants.TYPE, this);
this.lookupEnvironment.buildTypeBindings(parsedUnit, null /*no access restriction*/);
if ((this.unitScope= parsedUnit.scope) != null) {
int tokenCount= tokens.length;
char[] lastToken= tokens[tokenCount - 1];
char[][] qualifierTokens= CharOperation.subarray(tokens, 0, tokenCount - 1);
if (qualifierTokens != null && qualifierTokens.length > 0) {
Binding binding= this.unitScope.getTypeOrPackage(qualifierTokens);
if (binding != null && binding instanceof ReferenceBinding) {
ReferenceBinding ref= (ReferenceBinding)binding;
selectMemberTypeFromImport(parsedUnit, lastToken, ref, importReference.isStatic());
if (importReference.isStatic()) {
selectStaticFieldFromStaticImport(parsedUnit, lastToken, ref);
selectStaticMethodFromStaticImport(parsedUnit, lastToken, ref);
}
}
}
}
// accept qualified types only if no unqualified type was accepted
if (!this.acceptedAnswer) {
acceptQualifiedTypes();
if (!this.acceptedAnswer) {
this.nameEnvironment.findTypes(this.selectedIdentifier, false, false, IJavaSearchConstants.TYPE, this);
// try with simple type name
if (!this.acceptedAnswer) {
acceptQualifiedTypes();
}
}
}
if (this.noProposal && this.problem != null) {
this.requestor.acceptError(this.problem);
}
return;
}
}
}
if (parsedUnit.types != null || parsedUnit.isPackageInfo()) {
if (selectDeclaration(parsedUnit))
return;
this.lookupEnvironment.buildTypeBindings(parsedUnit, null /*no access restriction*/);
if ((this.unitScope= parsedUnit.scope) != null) {
try {
this.lookupEnvironment.completeTypeBindings(parsedUnit, true);
CompilationUnitDeclaration previousUnitBeingCompleted= this.lookupEnvironment.unitBeingCompleted;
this.lookupEnvironment.unitBeingCompleted= parsedUnit;
parsedUnit.scope.faultInTypes();
this.lookupEnvironment.unitBeingCompleted= previousUnitBeingCompleted;
ASTNode node= null;
if (parsedUnit.types != null)
node= parseBlockStatements(parsedUnit, selectionSourceStart);
if (DEBUG) {
System.out.println("SELECTION - AST :"); //$NON-NLS-1$
System.out.println(parsedUnit.toString());
}
parsedUnit.resolve();
if (node != null) {
selectLocalDeclaration(node);
}
} catch (SelectionNodeFound e) {
if (e.binding != null) {
if (DEBUG) {
System.out.println("SELECTION - Selection binding:"); //$NON-NLS-1$
System.out.println(e.binding.toString());
}
// if null then we found a problem in the selection node
selectFrom(e.binding, parsedUnit, e.isDeclaration);
}
}
}
}
}
// only reaches here if no selection could be derived from the parsed tree
// thus use the selected source and perform a textual type search
if (!this.acceptedAnswer) {
this.nameEnvironment.findTypes(this.selectedIdentifier, false, false, IJavaSearchConstants.TYPE, this);
// accept qualified types only if no unqualified type was accepted
if (!this.acceptedAnswer) {
acceptQualifiedTypes();
// accept types from all the workspace only if no type was found in the project scope
if (this.noProposal) {
findAllTypes(this.selectedIdentifier);
}
}
}
if (this.noProposal && this.problem != null) {
this.requestor.acceptError(this.problem);
}
} catch (IndexOutOfBoundsException e) { // work-around internal failure - 1GEMF6D
if (DEBUG) {
System.out.println("Exception caught by SelectionEngine:"); //$NON-NLS-1$
e.printStackTrace(System.out);
}
} catch (AbortCompilation e) { // ignore this exception for now since it typically means we cannot find java.lang.Object
if (DEBUG) {
System.out.println("Exception caught by SelectionEngine:"); //$NON-NLS-1$
e.printStackTrace(System.out);
}
} finally {
reset(true);
}
}
private void selectMemberTypeFromImport(CompilationUnitDeclaration parsedUnit, char[] lastToken, ReferenceBinding ref, boolean staticOnly) {
int fieldLength= lastToken.length;
ReferenceBinding[] memberTypes= ref.memberTypes();
next: for (int j= 0; j < memberTypes.length; j++) {
ReferenceBinding memberType= memberTypes[j];
if (fieldLength > memberType.sourceName.length)
continue next;
if (staticOnly && !memberType.isStatic())
continue next;
if (!CharOperation.equals(lastToken, memberType.sourceName, true))
continue next;
selectFrom(memberType, parsedUnit, false);
}
}
private void selectStaticFieldFromStaticImport(CompilationUnitDeclaration parsedUnit, char[] lastToken, ReferenceBinding ref) {
int fieldLength= lastToken.length;
FieldBinding[] fields= ref.availableFields();
next: for (int j= 0; j < fields.length; j++) {
FieldBinding field= fields[j];
if (fieldLength > field.name.length)
continue next;
if (field.isSynthetic())
continue next;
if (!field.isStatic())
continue next;
if (!CharOperation.equals(lastToken, field.name, true))
continue next;
selectFrom(field, parsedUnit, false);
}
}
private void selectStaticMethodFromStaticImport(CompilationUnitDeclaration parsedUnit, char[] lastToken, ReferenceBinding ref) {
int methodLength= lastToken.length;
MethodBinding[] methods= ref.availableMethods();
next: for (int j= 0; j < methods.length; j++) {
MethodBinding method= methods[j];
if (method.isSynthetic())
continue next;
if (method.isDefaultAbstract())
continue next;
if (method.isConstructor())
continue next;
if (!method.isStatic())
continue next;
if (methodLength > method.selector.length)
continue next;
if (!CharOperation.equals(lastToken, method.selector, true))
continue next;
selectFrom(method, parsedUnit, false);
}
}
private void selectFrom(Binding binding, CompilationUnitDeclaration parsedUnit, boolean isDeclaration) {
if (binding instanceof TypeVariableBinding) {
TypeVariableBinding typeVariableBinding= (TypeVariableBinding)binding;
Binding enclosingElement= typeVariableBinding.declaringElement;
this.noProposal= false;
if (enclosingElement instanceof SourceTypeBinding) {
SourceTypeBinding enclosingType= (SourceTypeBinding)enclosingElement;
if (isLocal(enclosingType) && this.requestor instanceof SelectionRequestor) {
((SelectionRequestor)this.requestor).acceptLocalTypeParameter(typeVariableBinding);
} else {
this.requestor.acceptTypeParameter(
enclosingType.qualifiedPackageName(),
enclosingType.qualifiedSourceName(),
typeVariableBinding.sourceName(),
false,
this.actualSelectionStart,
this.actualSelectionEnd);
}
} else if (enclosingElement instanceof MethodBinding) {
MethodBinding enclosingMethod= (MethodBinding)enclosingElement;
if (isLocal(enclosingMethod.declaringClass) && this.requestor instanceof SelectionRequestor) {
((SelectionRequestor)this.requestor).acceptLocalMethodTypeParameter(typeVariableBinding);
} else {
this.requestor.acceptMethodTypeParameter(
enclosingMethod.declaringClass.qualifiedPackageName(),
enclosingMethod.declaringClass.qualifiedSourceName(),
enclosingMethod.isConstructor()
? enclosingMethod.declaringClass.sourceName()
: enclosingMethod.selector,
enclosingMethod.sourceStart(),
enclosingMethod.sourceEnd(),
typeVariableBinding.sourceName(),
false,
this.actualSelectionStart,
this.actualSelectionEnd);
}
}
this.acceptedAnswer= true;
} else if (binding instanceof ReferenceBinding) {
ReferenceBinding typeBinding= (ReferenceBinding)binding;
if (typeBinding instanceof ProblemReferenceBinding) {
TypeBinding closestMatch= typeBinding.closestMatch();
if (closestMatch instanceof ReferenceBinding) {
typeBinding= (ReferenceBinding)closestMatch;
} else {
typeBinding= null;
}
}
if (typeBinding == null)
return;
if (isLocal(typeBinding) && this.requestor instanceof SelectionRequestor) {
this.noProposal= false;
((SelectionRequestor)this.requestor).acceptLocalType(typeBinding);
} else {
this.noProposal= false;
this.requestor.acceptType(
typeBinding.qualifiedPackageName(),
typeBinding.qualifiedSourceName(),
typeBinding.modifiers,
false,
typeBinding.computeUniqueKey(),
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedAnswer= true;
} else if (binding instanceof MethodBinding) {
MethodBinding methodBinding= (MethodBinding)binding;
this.noProposal= false;
boolean isValuesOrValueOf= false;
if (binding instanceof SyntheticMethodBinding) {
SyntheticMethodBinding syntheticMethodBinding= (SyntheticMethodBinding)binding;
if (syntheticMethodBinding.purpose == SyntheticMethodBinding.EnumValues
|| syntheticMethodBinding.purpose == SyntheticMethodBinding.EnumValueOf) {
isValuesOrValueOf= true;
}
}
if (!isValuesOrValueOf && !methodBinding.isSynthetic()) {
TypeBinding[] parameterTypes= methodBinding.original().parameters;
int length= parameterTypes.length;
char[][] parameterPackageNames= new char[length][];
char[][] parameterTypeNames= new char[length][];
String[] parameterSignatures= new String[length];
for (int i= 0; i < length; i++) {
parameterPackageNames[i]= parameterTypes[i].qualifiedPackageName();
parameterTypeNames[i]= parameterTypes[i].qualifiedSourceName();
parameterSignatures[i]= new String(getSignature(parameterTypes[i])).replace('/', '.');
}
TypeVariableBinding[] typeVariables= methodBinding.original().typeVariables;
length= typeVariables == null ? 0 : typeVariables.length;
char[][] typeParameterNames= new char[length][];
char[][][] typeParameterBoundNames= new char[length][][];
for (int i= 0; i < length; i++) {
TypeVariableBinding typeVariable= typeVariables[i];
typeParameterNames[i]= typeVariable.sourceName;
if (typeVariable.firstBound == null) {
typeParameterBoundNames[i]= new char[0][];
} else if (typeVariable.firstBound == typeVariable.superclass) {
int boundCount= 1 + (typeVariable.superInterfaces == null ? 0 : typeVariable.superInterfaces.length);
typeParameterBoundNames[i]= new char[boundCount][];
typeParameterBoundNames[i][0]= typeVariable.superclass.sourceName;
for (int j= 1; j < boundCount; j++) {
typeParameterBoundNames[i][j]= typeVariables[i].superInterfaces[j - 1].sourceName;
}
} else {
int boundCount= typeVariable.superInterfaces == null ? 0 : typeVariable.superInterfaces.length;
typeParameterBoundNames[i]= new char[boundCount][];
for (int j= 0; j < boundCount; j++) {
typeParameterBoundNames[i][j]= typeVariables[i].superInterfaces[j].sourceName;
}
}
}
ReferenceBinding declaringClass= methodBinding.declaringClass;
if (isLocal(declaringClass) && this.requestor instanceof SelectionRequestor) {
((SelectionRequestor)this.requestor).acceptLocalMethod(methodBinding);
} else {
this.requestor.acceptMethod(
declaringClass.qualifiedPackageName(),
declaringClass.qualifiedSourceName(),
declaringClass.enclosingType() == null ? null : new String(getSignature(declaringClass.enclosingType())),
methodBinding.isConstructor()
? declaringClass.sourceName()
: methodBinding.selector,
parameterPackageNames,
parameterTypeNames,
parameterSignatures,
typeParameterNames,
typeParameterBoundNames,
methodBinding.isConstructor(),
isDeclaration,
methodBinding.computeUniqueKey(),
this.actualSelectionStart,
this.actualSelectionEnd);
}
}
this.acceptedAnswer= true;
} else if (binding instanceof FieldBinding) {
FieldBinding fieldBinding= (FieldBinding)binding;
ReferenceBinding declaringClass= fieldBinding.declaringClass;
if (declaringClass != null) { // arraylength
this.noProposal= false;
if (isLocal(declaringClass) && this.requestor instanceof SelectionRequestor) {
((SelectionRequestor)this.requestor).acceptLocalField(fieldBinding);
} else {
// if the binding is a problem field binding, we want to make sure
// we can retrieve the closestMatch if the problem reason is NotVisible
FieldBinding currentFieldBinding= fieldBinding;
while (currentFieldBinding instanceof ProblemFieldBinding) {
ProblemFieldBinding problemFieldBinding= (ProblemFieldBinding)currentFieldBinding;
if (problemFieldBinding.problemId() == ProblemReasons.NotVisible) {
currentFieldBinding= problemFieldBinding.closestMatch;
} else {
currentFieldBinding= null;
}
}
char[] fieldName= null;
char[] key= null;
if (currentFieldBinding != null) {
fieldName= currentFieldBinding.name;
key= currentFieldBinding.computeUniqueKey();
} else {
fieldName= fieldBinding.name;
key= fieldBinding.computeUniqueKey();
}
this.requestor.acceptField(
declaringClass.qualifiedPackageName(),
declaringClass.qualifiedSourceName(),
fieldName,
false,
key,
this.actualSelectionStart,
this.actualSelectionEnd);
}
this.acceptedAnswer= true;
}
} else if (binding instanceof LocalVariableBinding) {
if (this.requestor instanceof SelectionRequestor) {
((SelectionRequestor)this.requestor).acceptLocalVariable((LocalVariableBinding)binding);
this.acceptedAnswer= true;
} else {
// open on the type of the variable
selectFrom(((LocalVariableBinding)binding).type, parsedUnit, false);
}
} else if (binding instanceof ArrayBinding) {
selectFrom(((ArrayBinding)binding).leafComponentType, parsedUnit, false);
// open on the type of the array
} else if (binding instanceof PackageBinding) {
PackageBinding packageBinding= (PackageBinding)binding;
this.noProposal= false;
this.requestor.acceptPackage(packageBinding.readableName());
this.acceptedAnswer= true;
} else if (binding instanceof BaseTypeBinding) {
this.acceptedAnswer= true;
}
}
/*
* Checks if a local declaration got selected in this method/initializer/field.
*/
private void selectLocalDeclaration(ASTNode node) {
// the selected identifier is not identical to the parser one (equals but not identical),
// for traversing the parse tree, the parser assist identifier is necessary for identitiy checks
final char[] assistIdentifier= getParser().assistIdentifier();
if (assistIdentifier == null)
return;
class Visitor extends ASTVisitor {
public boolean visit(ConstructorDeclaration constructorDeclaration, ClassScope scope) {
if (constructorDeclaration.selector == assistIdentifier) {
if (constructorDeclaration.binding != null) {
throw new SelectionNodeFound(constructorDeclaration.binding);
} else {
if (constructorDeclaration.scope != null) {
throw new SelectionNodeFound(new MethodBinding(constructorDeclaration.modifiers, constructorDeclaration.selector, null, null, null,
constructorDeclaration.scope.referenceType().binding));
}
}
}
return true;
}
public boolean visit(FieldDeclaration fieldDeclaration, MethodScope scope) {
if (fieldDeclaration.name == assistIdentifier) {
throw new SelectionNodeFound(fieldDeclaration.binding);
}
return true;
}
public boolean visit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
if (localTypeDeclaration.name == assistIdentifier) {
throw new SelectionNodeFound(localTypeDeclaration.binding);
}
return true;
}
public boolean visit(TypeDeclaration memberTypeDeclaration, ClassScope scope) {
if (memberTypeDeclaration.name == assistIdentifier) {
throw new SelectionNodeFound(memberTypeDeclaration.binding);
}
return true;
}
public boolean visit(MethodDeclaration methodDeclaration, ClassScope scope) {
if (methodDeclaration.selector == assistIdentifier) {
if (methodDeclaration.binding != null) {
throw new SelectionNodeFound(methodDeclaration.binding);
} else {
if (methodDeclaration.scope != null) {
throw new SelectionNodeFound(new MethodBinding(methodDeclaration.modifiers, methodDeclaration.selector, null, null, null, methodDeclaration.scope.referenceType().binding));
}
}
}
return true;
}
public boolean visit(TypeDeclaration typeDeclaration, CompilationUnitScope scope) {
if (typeDeclaration.name == assistIdentifier) {
throw new SelectionNodeFound(typeDeclaration.binding);
}
return true;
}
public boolean visit(TypeParameter typeParameter, BlockScope scope) {
if (typeParameter.name == assistIdentifier) {
throw new SelectionNodeFound(typeParameter.binding);
}
return true;
}
public boolean visit(TypeParameter typeParameter, ClassScope scope) {
if (typeParameter.name == assistIdentifier) {
throw new SelectionNodeFound(typeParameter.binding);
}
return true;
}
}
if (node instanceof AbstractMethodDeclaration) {
((AbstractMethodDeclaration)node).traverse(new Visitor(), (ClassScope)null);
} else {
((FieldDeclaration)node).traverse(new Visitor(), (MethodScope)null);
}
}
/**
* Asks the engine to compute the selection of the given type from the given context
*
* @param typeName char[] a type name which is to be resolved in the context of a compilation
* unit. NOTE: the type name is supposed to be correctly reduced (no whitespaces, no
* unicodes left)
*
* @param context org.eclipse.jdt.core.IType the context in which code assist is invoked.
*/
public void selectType(char[] typeName, IType context) throws JavaModelException {
try {
this.acceptedAnswer= false;
// only the type erasure are returned by IType.resolvedType(...)
if (CharOperation.indexOf('<', typeName) != -1) {
char[] typeSig= Signature.createCharArrayTypeSignature(typeName, false/*not resolved*/);
typeSig= Signature.getTypeErasure(typeSig);
typeName= Signature.toCharArray(typeSig);
}
// find the outer most type
IType outerType= context;
IType parent= context.getDeclaringType();
while (parent != null) {
outerType= parent;
parent= parent.getDeclaringType();
}
// compute parse tree for this most outer type
CompilationUnitDeclaration parsedUnit= null;
TypeDeclaration typeDeclaration= null;
org.eclipse.jdt.core.ICompilationUnit cu= context.getCompilationUnit();
if (cu != null) {
IType[] topLevelTypes= cu.getTypes();
int length= topLevelTypes.length;
SourceTypeElementInfo[] topLevelInfos= new SourceTypeElementInfo[length];
for (int i= 0; i < length; i++) {
topLevelInfos[i]= (SourceTypeElementInfo)((SourceType)topLevelTypes[i]).getElementInfo();
}
ISourceType outerTypeInfo= (ISourceType)((SourceType)outerType).getElementInfo();
CompilationResult result= new CompilationResult(outerTypeInfo.getFileName(), 1, 1, this.compilerOptions.maxProblemsPerUnit);
int flags= SourceTypeConverter.FIELD_AND_METHOD | SourceTypeConverter.MEMBER_TYPE;
if (context.isAnonymous() || context.isLocal())
flags|= SourceTypeConverter.LOCAL_TYPE;
parsedUnit=
SourceTypeConverter.buildCompilationUnit(
topLevelInfos,
flags,
this.parser.problemReporter(),
result);
if (parsedUnit != null && parsedUnit.types != null) {
if (DEBUG) {
System.out.println("SELECTION - Diet AST :"); //$NON-NLS-1$
System.out.println(parsedUnit.toString());
}
// find the type declaration that corresponds to the original source type
typeDeclaration= new ASTNodeFinder(parsedUnit).findType(context);
}
} else { // binary type
ClassFile classFile= (ClassFile)context.getClassFile();
ClassFileReader reader= (ClassFileReader)classFile.getBinaryTypeInfo((IFile)classFile.resource(), false/*don't fully initialize so as to keep constant pool (used below)*/);
CompilationResult result= new CompilationResult(reader.getFileName(), 1, 1, this.compilerOptions.maxProblemsPerUnit);
parsedUnit= new CompilationUnitDeclaration(this.parser.problemReporter(), result, 0);
HashSetOfCharArrayArray typeNames= new HashSetOfCharArrayArray();
BinaryTypeConverter converter= new BinaryTypeConverter(this.parser.problemReporter(), result, typeNames);
typeDeclaration= converter.buildTypeDeclaration(context, parsedUnit);
parsedUnit.imports= converter.buildImports(reader);
}
if (typeDeclaration != null) {
// add fake field with the type we're looking for
// note: since we didn't ask for fields above, there is no field defined yet
FieldDeclaration field= new FieldDeclaration();
int dot;
if ((dot= CharOperation.lastIndexOf('.', typeName)) == -1) {
this.selectedIdentifier= typeName;
field.type= new SelectionOnSingleTypeReference(typeName, -1);
// position not used
} else {
char[][] previousIdentifiers= CharOperation.splitOn('.', typeName, 0, dot);
char[] selectionIdentifier=
CharOperation.subarray(typeName, dot + 1, typeName.length);
this.selectedIdentifier= selectionIdentifier;
field.type=
new SelectionOnQualifiedTypeReference(
previousIdentifiers,
selectionIdentifier,
new long[previousIdentifiers.length + 1]);
}
field.name= "<fakeField>".toCharArray(); //$NON-NLS-1$
typeDeclaration.fields= new FieldDeclaration[] { field };
// build bindings
this.lookupEnvironment.buildTypeBindings(parsedUnit, null /*no access restriction*/);
if ((this.unitScope= parsedUnit.scope) != null) {
try {
// build fields
// note: this builds fields only in the parsed unit (the buildFieldsAndMethods flag is not passed along)
this.lookupEnvironment.completeTypeBindings(parsedUnit, true);
// resolve
parsedUnit.scope.faultInTypes();
parsedUnit.resolve();
} catch (SelectionNodeFound e) {
if (e.binding != null) {
if (DEBUG) {
System.out.println("SELECTION - Selection binding :"); //$NON-NLS-1$
System.out.println(e.binding.toString());
}
// if null then we found a problem in the selection node
selectFrom(e.binding, parsedUnit, e.isDeclaration);
}
}
}
}
if (this.noProposal && this.problem != null) {
this.requestor.acceptError(this.problem);
}
} catch (AbortCompilation e) { // ignore this exception for now since it typically means we cannot find java.lang.Object
} finally {
reset(true);
}
}
// Check if a declaration got selected in this unit
private boolean selectDeclaration(CompilationUnitDeclaration compilationUnit) {
// the selected identifier is not identical to the parser one (equals but not identical),
// for traversing the parse tree, the parser assist identifier is necessary for identitiy checks
char[] assistIdentifier= getParser().assistIdentifier();
if (assistIdentifier == null)
return false;
ImportReference currentPackage= compilationUnit.currentPackage;
char[] packageName= currentPackage == null ? CharOperation.NO_CHAR : CharOperation.concatWith(currentPackage.tokens, '.');
// iterate over the types
TypeDeclaration[] types= compilationUnit.types;
for (int i= 0, length= types == null ? 0 : types.length; i < length; i++) {
if (selectDeclaration(types[i], assistIdentifier, packageName))
return true;
}
return false;
}
// Check if a declaration got selected in this type
private boolean selectDeclaration(TypeDeclaration typeDeclaration, char[] assistIdentifier, char[] packageName) {
if (typeDeclaration.name == assistIdentifier) {
char[] qualifiedSourceName= null;
TypeDeclaration enclosingType= typeDeclaration;
while (enclosingType != null) {
qualifiedSourceName= CharOperation.concat(enclosingType.name, qualifiedSourceName, '.');
enclosingType= enclosingType.enclosingType;
}
char[] uniqueKey= typeDeclaration.binding != null ? typeDeclaration.binding.computeUniqueKey() : null;
this.requestor.acceptType(
packageName,
qualifiedSourceName,
typeDeclaration.modifiers,
true,
uniqueKey,
this.actualSelectionStart,
this.actualSelectionEnd);
this.noProposal= false;
return true;
}
TypeDeclaration[] memberTypes= typeDeclaration.memberTypes;
for (int i= 0, length= memberTypes == null ? 0 : memberTypes.length; i < length; i++) {
if (selectDeclaration(memberTypes[i], assistIdentifier, packageName))
return true;
}
FieldDeclaration[] fields= typeDeclaration.fields;
for (int i= 0, length= fields == null ? 0 : fields.length; i < length; i++) {
if (fields[i].name == assistIdentifier) {
char[] qualifiedSourceName= null;
TypeDeclaration enclosingType= typeDeclaration;
while (enclosingType != null) {
qualifiedSourceName= CharOperation.concat(enclosingType.name, qualifiedSourceName, '.');
enclosingType= enclosingType.enclosingType;
}
FieldDeclaration field= fields[i];
this.requestor.acceptField(
packageName,
qualifiedSourceName,
field.name,
true,
field.binding != null ? field.binding.computeUniqueKey() : null,
this.actualSelectionStart,
this.actualSelectionEnd);
this.noProposal= false;
return true;
}
}
AbstractMethodDeclaration[] methods= typeDeclaration.methods;
for (int i= 0, length= methods == null ? 0 : methods.length; i < length; i++) {
AbstractMethodDeclaration method= methods[i];
if (method.selector == assistIdentifier) {
char[] qualifiedSourceName= null;
TypeDeclaration enclosingType= typeDeclaration;
while (enclosingType != null) {
qualifiedSourceName= CharOperation.concat(enclosingType.name, qualifiedSourceName, '.');
enclosingType= enclosingType.enclosingType;
}
this.requestor.acceptMethod(
packageName,
qualifiedSourceName,
null, // SelectionRequestor does not need of declaring type signature for method declaration
method.selector,
null, // SelectionRequestor does not need of parameters type for method declaration
null, // SelectionRequestor does not need of parameters type for method declaration
null, // SelectionRequestor does not need of parameters type for method declaration
null, // SelectionRequestor does not need of type parameters name for method declaration
null, // SelectionRequestor does not need of type parameters bounds for method declaration
method.isConstructor(),
true,
method.binding != null ? method.binding.computeUniqueKey() : null,
this.actualSelectionStart,
this.actualSelectionEnd);
this.noProposal= false;
return true;
}
TypeParameter[] methodTypeParameters= method.typeParameters();
for (int j= 0, length2= methodTypeParameters == null ? 0 : methodTypeParameters.length; j < length2; j++) {
TypeParameter methodTypeParameter= methodTypeParameters[j];
if (methodTypeParameter.name == assistIdentifier) {
char[] qualifiedSourceName= null;
TypeDeclaration enclosingType= typeDeclaration;
while (enclosingType != null) {
qualifiedSourceName= CharOperation.concat(enclosingType.name, qualifiedSourceName, '.');
enclosingType= enclosingType.enclosingType;
}
this.requestor.acceptMethodTypeParameter(
packageName,
qualifiedSourceName,
method.selector,
method.sourceStart,
method.sourceEnd,
methodTypeParameter.name,
true,
this.actualSelectionStart,
this.actualSelectionEnd);
this.noProposal= false;
return true;
}
}
}
TypeParameter[] typeParameters= typeDeclaration.typeParameters;
for (int i= 0, length= typeParameters == null ? 0 : typeParameters.length; i < length; i++) {
TypeParameter typeParameter= typeParameters[i];
if (typeParameter.name == assistIdentifier) {
char[] qualifiedSourceName= null;
TypeDeclaration enclosingType= typeDeclaration;
while (enclosingType != null) {
qualifiedSourceName= CharOperation.concat(enclosingType.name, qualifiedSourceName, '.');
enclosingType= enclosingType.enclosingType;
}
this.requestor.acceptTypeParameter(
packageName,
qualifiedSourceName,
typeParameter.name,
true,
this.actualSelectionStart,
this.actualSelectionEnd);
this.noProposal= false;
return true;
}
}
return false;
}
}