X-Git-Url: http://git.phpeclipse.com
diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/codeassist/SelectionEngine.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/codeassist/SelectionEngine.java
new file mode 100644
index 0000000..6f5e306
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/codeassist/SelectionEngine.java
@@ -0,0 +1,739 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v0.5
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ ******************************************************************************/
+package net.sourceforge.phpdt.internal.codeassist;
+
+import java.util.*;
+
+import net.sourceforge.phpdt.core.compiler.*;
+import net.sourceforge.phpdt.core.compiler.InvalidInputException;
+import net.sourceforge.phpdt.core.compiler.IProblem;
+import net.sourceforge.phpdt.internal.codeassist.impl.*;
+import net.sourceforge.phpdt.internal.codeassist.select.*;
+import net.sourceforge.phpdt.internal.compiler.*;
+import net.sourceforge.phpdt.internal.compiler.env.*;
+import net.sourceforge.phpdt.internal.compiler.ast.*;
+import net.sourceforge.phpdt.internal.compiler.lookup.*;
+import net.sourceforge.phpdt.internal.compiler.parser.*;
+import net.sourceforge.phpdt.internal.compiler.problem.*;
+import net.sourceforge.phpdt.internal.compiler.util.*;
+import net.sourceforge.phpdt.internal.compiler.impl.*;
+
+/**
+ * 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 {
+
+ public static boolean DEBUG = false;
+
+ SelectionParser parser;
+ ISelectionRequestor requestor;
+
+ boolean acceptedAnswer;
+
+ private int actualSelectionStart;
+ private int actualSelectionEnd;
+ private char[] qualifiedSelection;
+ private char[] selectedIdentifier;
+
+ private char[][][] acceptedClasses;
+ private char[][][] acceptedInterfaces;
+ int acceptedClassesCount;
+ int acceptedInterfacesCount;
+
+ /**
+ * 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 net.sourceforge.phpdt.internal.codeassist.ISearchableNameEnvironment
+ * used to resolve type/package references and search for types/packages
+ * based on partial names.
+ *
+ * @param requestor net.sourceforge.phpdt.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(
+ ISearchableNameEnvironment nameEnvironment,
+ ISelectionRequestor requestor,
+ Map settings) {
+
+ super(settings);
+
+ this.requestor = requestor;
+ this.nameEnvironment = nameEnvironment;
+
+ ProblemReporter problemReporter =
+ new ProblemReporter(
+ DefaultErrorHandlingPolicies.proceedWithAllProblems(),
+ this.compilerOptions,
+ new DefaultProblemFactory(Locale.getDefault())) {
+ public void record(IProblem problem, CompilationResult unitResult, ReferenceContext referenceContext) {
+ unitResult.record(problem, referenceContext);
+ SelectionEngine.this.requestor.acceptError(problem);
+ }
+ };
+ this.parser = new SelectionParser(problemReporter, this.compilerOptions.assertMode);
+ this.lookupEnvironment =
+ new LookupEnvironment(this, this.compilerOptions, problemReporter, nameEnvironment);
+ }
+
+ /**
+ * One result of the search consists of a new class.
+ * @param packageName char[]
+ * @param className char[]
+ * @param modifiers int
+ *
+ * NOTE - All package and type names are presented in their readable form:
+ * Package names are in the form "a.b.c".
+ * Nested type names are in the qualified form "A.M".
+ * The default package is represented by an empty array.
+ */
+ public void acceptClass(char[] packageName, char[] className, int modifiers) {
+ if (CharOperation.equals(className, selectedIdentifier)) {
+ if (qualifiedSelection != null
+ && !CharOperation.equals(
+ qualifiedSelection,
+ CharOperation.concat(packageName, className, '.'))) {
+ return;
+ }
+
+ if(mustQualifyType(packageName, className)) {
+ char[][] acceptedClass = new char[2][];
+ acceptedClass[0] = packageName;
+ acceptedClass[1] = className;
+
+ if(acceptedClasses == null) {
+ acceptedClasses = new char[10][][];
+ acceptedClassesCount = 0;
+ }
+ int length = acceptedClasses.length;
+ if(length == acceptedClassesCount) {
+ System.arraycopy(acceptedClasses, 0, acceptedClasses = new char[(length + 1)* 2][][], 0, length);
+ }
+ acceptedClasses[acceptedClassesCount++] = acceptedClass;
+
+ } else {
+ requestor.acceptClass(
+ packageName,
+ className,
+ false);
+ acceptedAnswer = true;
+ }
+ }
+ }
+
+ /**
+ * One result of the search consists of a new interface.
+ *
+ * NOTE - All package and type names are presented in their readable form:
+ * Package names are in the form "a.b.c".
+ * Nested type names are in the qualified form "A.I".
+ * The default package is represented by an empty array.
+ */
+ public void acceptInterface(
+ char[] packageName,
+ char[] interfaceName,
+ int modifiers) {
+
+ if (CharOperation.equals(interfaceName, selectedIdentifier)) {
+ if (qualifiedSelection != null
+ && !CharOperation.equals(
+ qualifiedSelection,
+ CharOperation.concat(packageName, interfaceName, '.'))) {
+ return;
+ }
+
+ if(mustQualifyType(packageName, interfaceName)) {
+ char[][] acceptedInterface= new char[2][];
+ acceptedInterface[0] = packageName;
+ acceptedInterface[1] = interfaceName;
+
+ if(acceptedInterfaces == null) {
+ acceptedInterfaces = new char[10][][];
+ acceptedInterfacesCount = 0;
+ }
+ int length = acceptedInterfaces.length;
+ if(length == acceptedInterfacesCount) {
+ System.arraycopy(acceptedInterfaces, 0, acceptedInterfaces = new char[(length + 1) * 2][][], 0, length);
+ }
+ acceptedInterfaces[acceptedInterfacesCount++] = acceptedInterface;
+
+ } else {
+ requestor.acceptInterface(
+ packageName,
+ interfaceName,
+ false);
+ 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) {
+ }
+
+ private void acceptQualifiedTypes() {
+ if(acceptedClasses != null){
+ acceptedAnswer = true;
+ for (int i = 0; i < acceptedClassesCount; i++) {
+ requestor.acceptClass(
+ acceptedClasses[i][0],
+ acceptedClasses[i][1],
+ true);
+ }
+ acceptedClasses = null;
+ acceptedClassesCount = 0;
+ }
+ if(acceptedInterfaces != null){
+ acceptedAnswer = true;
+ for (int i = 0; i < acceptedInterfacesCount; i++) {
+ requestor.acceptInterface(
+ acceptedInterfaces[i][0],
+ acceptedInterfaces[i][1],
+ true);
+ }
+ acceptedInterfaces = null;
+ acceptedInterfacesCount = 0;
+ }
+ }
+
+ /**
+ * One result of the search consists of a new type.
+ * @param packageName char[]
+ * @param typeName char[]
+ *
+ * NOTE - All package and type names are presented in their readable form:
+ * Package names are in the form "a.b.c".
+ * Nested type names are in the qualified form "A.M".
+ * The default package is represented by an empty array.
+ */
+ public void acceptType(char[] packageName, char[] typeName) {
+ acceptClass(packageName, typeName, 0);
+ }
+
+ private boolean checkSelection(
+ char[] source,
+ int selectionStart,
+ int selectionEnd) {
+
+ Scanner scanner = new Scanner();
+ scanner.setSource(source);
+
+ int lastIdentifierStart = -1;
+ int lastIdentifierEnd = -1;
+ char[] lastIdentifier = null;
+ int token, identCount = 0;
+ StringBuffer entireSelection = new StringBuffer(selectionEnd - selectionStart + 1);
+
+ if(selectionStart > selectionEnd){
+
+ // compute start position of current line
+ int currentPosition = selectionStart - 1;
+ int nextCharacterPosition = selectionStart;
+ char currentCharacter = ' ';
+ try {
+ while(currentPosition > 0 || currentCharacter == '\r' || currentCharacter == '\n'){
+
+ 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++;
+ }
+ if ((c1 = Character.getNumericValue(source[pos++])) > 15
+ || c1 < 0
+ || (c2 = Character.getNumericValue(source[pos++])) > 15
+ || c2 < 0
+ || (c3 = Character.getNumericValue(source[pos++])) > 15
+ || c3 < 0
+ || (c4 = Character.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;
+ }
+
+ if(currentCharacter == '\r' || currentCharacter == '\n') {
+ break;
+ }
+ currentPosition--;
+ }
+ }
+ catch (ArrayIndexOutOfBoundsException e) {
+ return false;
+ }
+
+ // compute start and end of the last token
+ scanner.resetTo(nextCharacterPosition, selectionEnd);
+ do {
+ try {
+ token = scanner.getNextToken();
+ } catch (InvalidInputException e) {
+ return false;
+ }
+ if((
+ // token == ITerminalSymbols.TokenNamethis ||
+ // token == ITerminalSymbols.TokenNamesuper ||
+ token == ITerminalSymbols.TokenNameIdentifier) &&
+ scanner.startPosition <= selectionStart &&
+ selectionStart <= scanner.currentPosition) {
+ lastIdentifierStart = scanner.startPosition;
+ lastIdentifierEnd = scanner.currentPosition - 1;
+ lastIdentifier = scanner.getCurrentTokenSource();
+ }
+ } while (token != ITerminalSymbols.TokenNameEOF);
+ } else {
+ scanner.resetTo(selectionStart, selectionEnd);
+
+ boolean expectingIdentifier = true;
+
+ do {
+ try {
+ token = scanner.getNextToken();
+ } catch (InvalidInputException e) {
+ return false;
+ }
+ switch (token) {
+// case ITerminalSymbols.TokenNamethis :
+// case ITerminalSymbols.TokenNamesuper :
+ case ITerminalSymbols.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);
+ }
+ entireSelection.append(lastIdentifier);
+
+ identCount++;
+ expectingIdentifier = false;
+ break;
+ case ITerminalSymbols.TokenNameDOT :
+ if (expectingIdentifier)
+ return false;
+ entireSelection.append('.');
+ expectingIdentifier = true;
+ break;
+ case ITerminalSymbols.TokenNameEOF :
+ if (expectingIdentifier)
+ return false;
+ break;
+ default :
+ return false;
+ }
+ } while (token != ITerminalSymbols.TokenNameEOF);
+ }
+ if (lastIdentifierStart > 0) {
+ actualSelectionStart = lastIdentifierStart;
+ actualSelectionEnd = lastIdentifierEnd;
+ selectedIdentifier = lastIdentifier;
+ if (identCount > 1)
+ qualifiedSelection = entireSelection.toString().toCharArray();
+ return true;
+ }
+ return false;
+ }
+
+ public AssistParser getParser() {
+ return parser;
+ }
+
+ /**
+ * Ask the engine to compute the selection at the specified position
+ * of the given compilation unit.
+
+ * @param sourceUnit net.sourceforge.phpdt.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;
+ try {
+ acceptedAnswer = false;
+ CompilationResult result = new CompilationResult(sourceUnit, 1, 1, this.compilerOptions.maxProblemsPerUnit);
+ CompilationUnitDeclaration parsedUnit =
+ parser.dietParse(sourceUnit, result, actualSelectionStart, 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;
+ 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;
+ requestor.acceptPackage(CharOperation.concatWith(tokens, '.'));
+ nameEnvironment.findTypes(CharOperation.concatWith(tokens, '.'), this);
+ // accept qualified types only if no unqualified type was accepted
+ if(!acceptedAnswer) {
+ acceptQualifiedTypes();
+ if (!acceptedAnswer) {
+ nameEnvironment.findTypes(selectedIdentifier, this);
+ // try with simple type name
+ if(!acceptedAnswer) {
+ acceptQualifiedTypes();
+ }
+ }
+ }
+ return;
+ }
+ }
+ }
+ if (parsedUnit.types != null) {
+ lookupEnvironment.buildTypeBindings(parsedUnit);
+ if ((this.unitScope = parsedUnit.scope) != null) {
+ try {
+ lookupEnvironment.completeTypeBindings(parsedUnit, true);
+ parsedUnit.scope.faultInTypes();
+ selectDeclaration(parsedUnit);
+ parseMethod(parsedUnit, selectionSourceStart);
+ if(DEBUG) {
+ System.out.println("SELECTION - AST :"); //$NON-NLS-1$
+ System.out.println(parsedUnit.toString());
+ }
+ 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);
+ }
+ }
+ }
+ }
+ }
+ // 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 (!acceptedAnswer) {
+ nameEnvironment.findTypes(selectedIdentifier, this);
+
+ // accept qualified types only if no unqualified type was accepted
+ if(!acceptedAnswer) {
+ acceptQualifiedTypes();
+ }
+ }
+ } catch (IndexOutOfBoundsException e) { // work-around internal failure - 1GEMF6D
+ } catch (AbortCompilation e) { // ignore this exception for now since it typically means we cannot find java.lang.Object
+ } finally {
+ reset();
+ }
+ }
+
+ private void selectFrom(Binding binding) {
+ if (binding instanceof ReferenceBinding) {
+ ReferenceBinding typeBinding = (ReferenceBinding) binding;
+ if (qualifiedSelection != null
+ && !CharOperation.equals(qualifiedSelection, typeBinding.readableName())) {
+ return;
+ }
+ if (typeBinding.isInterface()) {
+ requestor.acceptInterface(
+ typeBinding.qualifiedPackageName(),
+ typeBinding.qualifiedSourceName(),
+ false);
+ } else if(typeBinding instanceof ProblemReferenceBinding){
+ ProblemReferenceBinding problemBinding = (ProblemReferenceBinding)typeBinding;
+ if(problemBinding.original == null
+ || !(problemBinding.original instanceof ReferenceBinding)) {
+ return;
+ }
+ ReferenceBinding original = (ReferenceBinding) problemBinding.original;
+
+ requestor.acceptClass(
+ original.qualifiedPackageName(),
+ original.qualifiedSourceName(),
+ false);
+ } else {
+ requestor.acceptClass(
+ typeBinding.qualifiedPackageName(),
+ typeBinding.qualifiedSourceName(),
+ false);
+ }
+ acceptedAnswer = true;
+ } else
+ if (binding instanceof MethodBinding) {
+ MethodBinding methodBinding = (MethodBinding) binding;
+ TypeBinding[] parameterTypes = methodBinding.parameters;
+ int length = parameterTypes.length;
+ char[][] parameterPackageNames = new char[length][];
+ char[][] parameterTypeNames = new char[length][];
+ for (int i = 0; i < length; i++) {
+ parameterPackageNames[i] = parameterTypes[i].qualifiedPackageName();
+ parameterTypeNames[i] = parameterTypes[i].qualifiedSourceName();
+ }
+ requestor.acceptMethod(
+ methodBinding.declaringClass.qualifiedPackageName(),
+ methodBinding.declaringClass.qualifiedSourceName(),
+ methodBinding.isConstructor()
+ ? methodBinding.declaringClass.sourceName()
+ : methodBinding.selector,
+ parameterPackageNames,
+ parameterTypeNames,
+ methodBinding.isConstructor());
+ acceptedAnswer = true;
+ } else
+ if (binding instanceof FieldBinding) {
+ FieldBinding fieldBinding = (FieldBinding) binding;
+ if (fieldBinding.declaringClass != null) { // arraylength
+ requestor.acceptField(
+ fieldBinding.declaringClass.qualifiedPackageName(),
+ fieldBinding.declaringClass.qualifiedSourceName(),
+ fieldBinding.name);
+ acceptedAnswer = true;
+ }
+ } else
+ if (binding instanceof LocalVariableBinding) {
+ selectFrom(((LocalVariableBinding) binding).type);
+ // open on the type of the variable
+ } else
+ if (binding instanceof ArrayBinding) {
+ selectFrom(((ArrayBinding) binding).leafComponentType);
+ // open on the type of the array
+ } else
+ if (binding instanceof PackageBinding) {
+ PackageBinding packageBinding = (PackageBinding) binding;
+ requestor.acceptPackage(packageBinding.readableName());
+ acceptedAnswer = true;
+ } else
+ if(binding instanceof BaseTypeBinding) {
+ acceptedAnswer = true;
+ }
+ }
+
+ /**
+ * Asks the engine to compute the selection of the given type
+ * from the source type.
+ *
+ * @param sourceType net.sourceforge.phpdt.internal.compiler.env.ISourceType
+ * a source form of the current type in which code assist is invoked.
+ *
+ * @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 searchInEnvironment
+ * if true and no selection could be found in context then search type in environment.
+ */
+ public void selectType(ISourceType sourceType, char[] typeName, boolean searchInEnvironment) {
+ try {
+ acceptedAnswer = false;
+
+ // find the outer most type
+ ISourceType outerType = sourceType;
+ ISourceType parent = sourceType.getEnclosingType();
+ while (parent != null) {
+ outerType = parent;
+ parent = parent.getEnclosingType();
+ }
+ // compute parse tree for this most outer type
+ CompilationResult result = new CompilationResult(outerType.getFileName(), 1, 1, this.compilerOptions.maxProblemsPerUnit);
+ CompilationUnitDeclaration parsedUnit =
+ SourceTypeConverter
+ .buildCompilationUnit(
+ new ISourceType[] { outerType },
+ false,
+ // don't need field and methods
+ true, // by default get member types
+ 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
+ char[] packageName = sourceType.getPackageName();
+ char[] sourceTypeName = sourceType.getQualifiedName();
+ // the fully qualified name without the package name
+ if (packageName != null) {
+ // remove the package name if necessary
+ sourceTypeName =
+ CharOperation.subarray(
+ sourceType.getQualifiedName(),
+ packageName.length + 1,
+ sourceTypeName.length);
+ };
+ TypeDeclaration typeDecl =
+ parsedUnit.declarationOfType(CharOperation.splitOn('.', sourceTypeName));
+ if (typeDecl != 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 {
+ qualifiedSelection = typeName;
+ char[][] previousIdentifiers = CharOperation.splitOn('.', typeName, 0, dot - 1);
+ 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(); //$NON-NLS-1$
+ typeDecl.fields = new FieldDeclaration[] { field };
+
+ // build bindings
+ lookupEnvironment.buildTypeBindings(parsedUnit);
+ 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);
+ }
+ }
+ }
+ }
+ }
+ // 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 (!acceptedAnswer && searchInEnvironment) {
+ if (this.selectedIdentifier != null) {
+ nameEnvironment.findTypes(typeName, this);
+
+ // accept qualified types only if no unqualified type was accepted
+ if(!acceptedAnswer) {
+ acceptQualifiedTypes();
+ }
+ }
+ }
+ } catch (AbortCompilation e) { // ignore this exception for now since it typically means we cannot find java.lang.Object
+ } finally {
+ qualifiedSelection = null;
+ reset();
+ }
+ }
+
+ // Check if a declaration got selected in this unit
+ private void 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 = this.getParser().assistIdentifier();
+ if (assistIdentifier == null) return;
+
+ // iterate over the types
+ TypeDeclaration[] types = compilationUnit.types;
+ for (int i = 0, length = types == null ? 0 : types.length; i < length; i++){
+ selectDeclaration(types[i], assistIdentifier);
+ }
+ }
+
+ // Check if a declaration got selected in this type
+ private void selectDeclaration(TypeDeclaration typeDeclaration, char[] assistIdentifier){
+
+ if (typeDeclaration.name == assistIdentifier){
+ throw new SelectionNodeFound(typeDeclaration.binding);
+ }
+ TypeDeclaration[] memberTypes = typeDeclaration.memberTypes;
+ for (int i = 0, length = memberTypes == null ? 0 : memberTypes.length; i < length; i++){
+ selectDeclaration(memberTypes[i], assistIdentifier);
+ }
+ FieldDeclaration[] fields = typeDeclaration.fields;
+ for (int i = 0, length = fields == null ? 0 : fields.length; i < length; i++){
+ if (fields[i].name == assistIdentifier){
+ throw new SelectionNodeFound(fields[i].binding);
+ }
+ }
+ 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){
+ if(method.binding != null) {
+ throw new SelectionNodeFound(method.binding);
+ } else {
+ if(method.scope != null) {
+ throw new SelectionNodeFound(new MethodBinding(method.modifiers, method.selector, null, null, null, method.scope.referenceType().binding));
+ }
+ }
+ }
+ }
+ }
+}
\ No newline at end of file