org.eclipse.jdt.internal.codeassist.SelectionEngine Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2015 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.ArrayList;
import java.util.Iterator;
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.IBuffer;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMember;
import org.eclipse.jdt.core.IOpenable;
import org.eclipse.jdt.core.ISourceRange;
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.*;
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.*;
import org.eclipse.jdt.internal.codeassist.select.*;
import org.eclipse.jdt.internal.compiler.*;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.eclipse.jdt.internal.compiler.env.*;
import org.eclipse.jdt.internal.compiler.ast.*;
import org.eclipse.jdt.internal.compiler.lookup.*;
import org.eclipse.jdt.internal.compiler.parser.*;
import org.eclipse.jdt.internal.compiler.problem.*;
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.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
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.getHexadecimalValue(source[pos++])) > 15
|| c1 < 0
|| (c2 = ScannerHelper.getHexadecimalValue(source[pos++])) > 15
|| c2 < 0
|| (c3 = ScannerHelper.getHexadecimalValue(source[pos++])) > 15
|| c3 < 0
|| (c4 = ScannerHelper.getHexadecimalValue(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;
case '-':
if (source[nextCharacterPosition] == '>') {
nextCharacterPosition--; // nextCharacterPosition = currentPosition
break lineLoop;
}
break;
case ':':
if (source[nextCharacterPosition] == ':') {
nextCharacterPosition--; // nextCharacterPosition = currentPosition
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.TokenNamenew:
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;
case TerminalTokens.TokenNameARROW:
case TerminalTokens.TokenNameCOLON_COLON:
if (scanner.startPosition <= selectionStart && selectionStart <= scanner.currentPosition) {
lastIdentifierStart = scanner.startPosition;
lastIdentifierEnd = scanner.currentPosition - 1;
lastIdentifier = scanner.getCurrentTokenSource();
break isolateLastName;
}
break;
}
} while (token != TerminalTokens.TokenNameEOF);
} else {
if (selectionStart == selectionEnd) { // Widen the selection to scan -> || :: if needed. No unicode handling for now.
if (selectionStart > 0 && selectionEnd < source.length - 1) {
if ((source[selectionStart] == '>' && source[selectionStart - 1] == '-') ||
source[selectionStart] == ':' && source[selectionStart - 1] == ':') {
selectionStart--;
} else {
if ((source[selectionStart] == '-' && source[selectionEnd + 1] == '>') ||
source[selectionStart] == ':' && source[selectionEnd + 1] == ':') {
selectionEnd++;
}
}
}
} // there could be some innocuous widening, shouldn't matter.
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.TokenNamenew :
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.TokenNameCOLON_COLON:
if (selectionStart >= scanner.startPosition && selectionEnd < scanner.currentPosition) {
this.actualSelectionStart = selectionStart;
this.actualSelectionEnd = selectionEnd;
this.selectedIdentifier = CharOperation.NO_CHAR;
return true;
}
//$FALL-THROUGH$
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;
case TerminalTokens.TokenNameARROW:
if (selectionStart >= scanner.startPosition && selectionEnd < scanner.currentPosition) {
this.actualSelectionStart = selectionStart;
this.actualSelectionEnd = selectionEnd;
this.selectedIdentifier = CharOperation.NO_CHAR;
return true;
}
return false;
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, sourceUnit, 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) {
selectFrom(binding, parsedUnit, null, isDeclaration);
}
private void selectFrom(Binding binding, CompilationUnitDeclaration parsedUnit, ICompilationUnit unit, 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 = getCorrectMethodBinding((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 (TypeBinding.equalsEquals(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, unit);
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);
}
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();
}
CompilationResult result = new CompilationResult((org.eclipse.jdt.internal.compiler.env.ICompilationUnit) cu, 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
while (context.isLambda() && context.getParent() != null) {
// It is easier to find the first enclosing proper type than the corresponding
// lambda expression ast to add the selection node to.
context = (IType) context.getParent().getAncestor(IJavaElement.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 = "".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;
}
/*
* Returns the correct method binding according to whether the selection is on the method declaration
* or on the inheritDoc tag in its javadoc.
*/
private MethodBinding getCorrectMethodBinding(MethodBinding binding) {
if (this.parser.javadocParser instanceof SelectionJavadocParser) {
if (((SelectionJavadocParser)this.parser.javadocParser).inheritDocTagSelected){
try {
Object res = findMethodWithAttachedDocInHierarchy(binding);
if (res instanceof MethodBinding) {
return (MethodBinding) res;
}
} catch (JavaModelException e) {
return null;
}
}
}
return binding;
}
protected MethodBinding findOverriddenMethodInType(ReferenceBinding overriddenType, MethodBinding overriding) throws JavaModelException {
if (overriddenType == null)
return null;
MethodBinding[] overriddenMethods= overriddenType.availableMethods();
LookupEnvironment lookupEnv = this.lookupEnvironment;
if (lookupEnv != null && overriddenMethods != null) {
for (int i= 0; i < overriddenMethods.length; i++) {
if (lookupEnv.methodVerifier().isMethodSubsignature(overriding, overriddenMethods[i])) {
return overriddenMethods[i];
}
}
}
return null;
}
private Object findMethodWithAttachedDocInHierarchy(final MethodBinding method) throws JavaModelException {
ReferenceBinding type= method.declaringClass;
final SelectionRequestor requestor1 = (SelectionRequestor) this.requestor;
return new InheritDocVisitor() {
public Object visit(ReferenceBinding currType) throws JavaModelException {
MethodBinding overridden = findOverriddenMethodInType(currType, method);
if (overridden == null)
return InheritDocVisitor.CONTINUE;
TypeBinding args[] = overridden.parameters;
String names[] = new String[args.length];
for (int i = 0; i < args.length; i++) {
names[i] = Signature.createTypeSignature(args[i].sourceName(), false);
}
IMember member = (IMember) requestor1.findMethodFromBinding(overridden, names, overridden.declaringClass);
if (member == null)
return InheritDocVisitor.CONTINUE;
if (member.getAttachedJavadoc(null) != null ) {
// for binary methods with attached javadoc and no source attached
return overridden;
}
IOpenable openable = member.getOpenable();
if (openable == null)
return InheritDocVisitor.CONTINUE;
IBuffer buf= openable.getBuffer();
if (buf == null) {
// no source attachment found. This method maybe the one. Stop.
return InheritDocVisitor.STOP_BRANCH;
}
ISourceRange javadocRange= member.getJavadocRange();
if (javadocRange == null)
return InheritDocVisitor.CONTINUE; // this method doesn't have javadoc, continue to look.
String rawJavadoc= buf.getText(javadocRange.getOffset(), javadocRange.getLength());
if (rawJavadoc != null) {
return overridden;
}
return InheritDocVisitor.CONTINUE;
}
}.visitInheritDoc(type);
}
/**
* Implements the "Algorithm for Inheriting Method Comments" as specified for
* 1.6.
*
*
* Unfortunately, the implementation is broken in Javadoc implementations since 1.5, see
* Sun's bug.
*
*
*
* We adhere to the spec.
*
*/
static abstract class InheritDocVisitor {
public static final Object STOP_BRANCH= new Object() {
public String toString() { return "STOP_BRANCH"; } //$NON-NLS-1$
};
public static final Object CONTINUE= new Object() {
public String toString() { return "CONTINUE"; } //$NON-NLS-1$
};
/**
* Visits a type and decides how the visitor should proceed.
*
* @param currType the current type
* @return
* - {@link #STOP_BRANCH} to indicate that no Javadoc has been found and visiting
* super types should stop here
* - {@link #CONTINUE} to indicate that no Javadoc has been found and visiting
* super types should continue
* - an {@link Object} or
null, to indicate that visiting should be
* cancelled immediately. The returned value is the result of
* {@link #visitInheritDoc(ReferenceBinding)}
*
* @throws JavaModelException unexpected problem
* @see #visitInheritDoc(ReferenceBinding)
*/
public abstract Object visit(ReferenceBinding currType) throws JavaModelException;
/**
* Visits the super types of the given currentType.
*
* @param currentType the starting type
* @return the result from a call to {@link #visit(ReferenceBinding)}, or null if none of
* the calls returned a result
* @throws JavaModelException unexpected problem
*/
public Object visitInheritDoc(ReferenceBinding currentType) throws JavaModelException {
ArrayList visited= new ArrayList();
visited.add(currentType);
Object result= visitInheritDocInterfaces(visited, currentType);
if (result != InheritDocVisitor.CONTINUE)
return result;
ReferenceBinding superClass= currentType.superclass();
while (superClass != null && ! visited.contains(superClass)) {
result= visit(superClass);
if (result == InheritDocVisitor.STOP_BRANCH) {
return null;
} else if (result == InheritDocVisitor.CONTINUE) {
visited.add(superClass);
result= visitInheritDocInterfaces(visited, superClass);
if (result != InheritDocVisitor.CONTINUE)
return result;
else
superClass= superClass.superclass();
} else {
return result;
}
}
return null;
}
/**
* Visits the super interfaces of the given type in the given hierarchy, thereby skipping already visited types.
*
* @param visited set of visited types
* @param currentType type whose super interfaces should be visited
* @return the result, or {@link #CONTINUE} if no result has been found
* @throws JavaModelException unexpected problem
*/
private Object visitInheritDocInterfaces(ArrayList visited, ReferenceBinding currentType) throws JavaModelException {
ArrayList toVisitChildren= new ArrayList();
ReferenceBinding[] superInterfaces= currentType.superInterfaces();
for (int i= 0; i < superInterfaces.length; i++) {
ReferenceBinding superInterface= superInterfaces[i];
if (visited.contains(superInterface))
continue;
visited.add(superInterface);
Object result= visit(superInterface);
if (result == InheritDocVisitor.STOP_BRANCH) {
//skip
} else if (result == InheritDocVisitor.CONTINUE) {
toVisitChildren.add(superInterface);
} else {
return result;
}
}
for (Iterator iter= toVisitChildren.iterator(); iter.hasNext(); ) {
ReferenceBinding child= (ReferenceBinding) iter.next();
Object result= visitInheritDocInterfaces(visited, child);
if (result != InheritDocVisitor.CONTINUE)
return result;
}
return InheritDocVisitor.CONTINUE;
}
}
}