net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/codeassist/complete/CompletionOnQualifiedNameReference.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v0.5
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v05.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  ******************************************************************************/
  11 package net.sourceforge.phpdt.internal.codeassist.complete;
  12
  13 /*
  14  * Completion node build by the parser in any case it was intending to
  15  * reduce a qualified name reference containing the completion identifier.
  16  * e.g.
  17  *
  18  *      class X {
  19  *    Y y;
  20  *    void foo() {
  21  *      y.fred.ba[cursor]
  22  *    }
  23  *  }
  24  *
  25  *      ---> class X {
  26  *         Y y;
  27  *         void foo() {
  28  *           <CompleteOnName:y.fred.ba>
  29  *         }
  30  *       }
  31  *
  32  * The source range of the completion node denotes the source range
  33  * which should be replaced by the completion.
  34  */
  35
  36 import net.sourceforge.phpdt.internal.compiler.ast.QualifiedNameReference;
  37 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  38 import net.sourceforge.phpdt.internal.compiler.lookup.FieldBinding;
  39 import net.sourceforge.phpdt.internal.compiler.lookup.ProblemFieldBinding;
  40 import net.sourceforge.phpdt.internal.compiler.lookup.ProblemReferenceBinding;
  41 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  42
  43 public class CompletionOnQualifiedNameReference extends QualifiedNameReference {
  44         public char[] completionIdentifier;
  45         public long[] sourcePositions; // positions of each token, the last one being the positions of the completion identifier
  46 public CompletionOnQualifiedNameReference(char[][] previousIdentifiers, char[] completionIdentifier, long[] positions) {
  47         super(previousIdentifiers, (int) (positions[0] >>> 32), (int) positions[positions.length - 1]);
  48         this.completionIdentifier = completionIdentifier;
  49         this.sourcePositions = positions;
  50 }
  51 public CompletionOnQualifiedNameReference(char[][] previousIdentifiers, char[] completionIdentifier, int sourceStart, int sourceEnd) {
  52         super(previousIdentifiers, sourceStart, sourceEnd);
  53         this.completionIdentifier = completionIdentifier;
  54         this.sourcePositions = new long[] {((long)sourceStart << 32) + sourceEnd};
  55 }
  56 public TypeBinding resolveType(BlockScope scope) {
  57         // it can be a package, type, member type, local variable or field
  58         binding = scope.getBinding(tokens, this);
  59         if (!binding.isValidBinding()) {
  60                 if (binding instanceof ProblemFieldBinding) {
  61                         scope.problemReporter().invalidField(this, (FieldBinding) binding);
  62                 } else if (binding instanceof ProblemReferenceBinding) {
  63                         scope.problemReporter().invalidType(this, (TypeBinding) binding);
  64                 } else {
  65                         scope.problemReporter().unresolvableReference(this, binding);
  66                 }
  67                 throw new CompletionNodeFound();
  68         }
  69
  70         throw new CompletionNodeFound(this, binding, scope);
  71 }
  72 public String toStringExpression() {
  73
  74         StringBuffer buffer = new StringBuffer("<CompleteOnName:"); //$NON-NLS-1$
  75         for (int i = 0; i < tokens.length; i++) {
  76                 buffer.append(tokens[i]);
  77                 buffer.append("."); //$NON-NLS-1$
  78         }
  79         buffer.append(completionIdentifier).append(">"); //$NON-NLS-1$
  80         return buffer.toString();
  81 }
  82 }