Java Code Examples for org.eclipse.jdt.core.CompletionProposal#getDeclarationSignature()

private void createAnonymousTypeLabel(CompletionProposal proposal, CompletionItem item) {
	char[] declaringTypeSignature= proposal.getDeclarationSignature();
	declaringTypeSignature= Signature.getTypeErasure(declaringTypeSignature);
	String name = new String(Signature.getSignatureSimpleName(declaringTypeSignature));
	item.setInsertText(name);
	StringBuilder buf= new StringBuilder();
	buf.append(name);
	buf.append('(');
	appendUnboundedParameterList(buf, proposal);
	buf.append(')');
	buf.append("  "); //$NON-NLS-1$
	buf.append("Anonymous Inner Type"); //TODO: consider externalization
	item.setLabel(buf.toString());

	if (proposal.getRequiredProposals() != null) {
		char[] signatureQualifier= Signature.getSignatureQualifier(declaringTypeSignature);
		if (signatureQualifier.length > 0) {
			item.setDetail(String.valueOf(signatureQualifier) + "." + name);
		}
	}
	setDeclarationSignature(item, String.valueOf(declaringTypeSignature));
}
 

/**
 * Resolves the field described by the receiver and returns it if found. Returns
 * <code>null</code> if no corresponding member can be found.
 *
 * @param proposal
 *            - completion proposal
 * @param javaProject
 *            - Java project
 *
 * @return the resolved field or <code>null</code> if none is found
 * @throws JavaModelException
 *             if accessing the java model fails
 */
public static IField resolveField(CompletionProposal proposal, IJavaProject javaProject) throws JavaModelException {
	char[] declarationSignature = proposal.getDeclarationSignature();
	// for synthetic fields on arrays, declaration signatures may be null
	// TODO remove when https://bugs.eclipse.org/bugs/show_bug.cgi?id=84690 gets fixed
	if (declarationSignature == null) {
		return null;
	}
	String typeName = SignatureUtil.stripSignatureToFQN(String.valueOf(declarationSignature));
	IType type = javaProject.findType(typeName);
	if (type != null) {
		String name = String.valueOf(proposal.getName());
		IField field = type.getField(name);
		if (field.exists()) {
			return field;
		}
	}

	return null;
}
 

protected ICompletionProposal createProposal(CompletionProposal javaProposal) {
  String completion = String.valueOf(javaProposal.getCompletion());
  int kind = javaProposal.getKind();
  if (kind == CompletionProposal.TYPE_REF) {
    // Make sure it is fully qualified
    completion = JavaContentAssistUtilities.getFullyQualifiedTypeName(javaProposal);
  }

  if (forceFullyQualifiedFieldNames
      && (kind == CompletionProposal.FIELD_IMPORT || kind == CompletionProposal.FIELD_REF)) {
    char[] decSig = javaProposal.getDeclarationSignature();
    if (decSig != null && decSig.length > 2) {
      // declaration signatures for objects are like Ljava.lang.String;, so lop off first
      // and last chars
      completion = new String(decSig, 1, decSig.length - 2) + "."
          + new String(javaProposal.getCompletion());
      completion = completion.replace('$', '.');
    }
  }

  ICompletionProposal jdtCompletionProposal = JavaContentAssistUtilities.getJavaCompletionProposal(
      javaProposal, context, javaProject);
  return ReplacementCompletionProposal.fromExistingCompletionProposal(completion,
      replaceOffset, replaceLength, jdtCompletionProposal);
}
 

StyledString createAnonymousTypeLabel(CompletionProposal proposal) {
	char[] declaringTypeSignature= proposal.getDeclarationSignature();
	declaringTypeSignature= Signature.getTypeErasure(declaringTypeSignature);

	StyledString buffer= new StyledString();
	buffer.append(Signature.getSignatureSimpleName(declaringTypeSignature));
	buffer.append('(');
	appendUnboundedParameterList(buffer, proposal);
	buffer.append(')');
	buffer.append("  "); //$NON-NLS-1$
	buffer.append(JavaTextMessages.ResultCollector_anonymous_type);

	if (proposal.getRequiredProposals() != null) {
		char[] signatureQualifier= Signature.getSignatureQualifier(declaringTypeSignature);
		if (signatureQualifier.length > 0) {
			buffer.append(JavaElementLabels.CONCAT_STRING, StyledString.QUALIFIER_STYLER);
			buffer.append(signatureQualifier, StyledString.QUALIFIER_STYLER);
		}
	}

	return Strings.markJavaElementLabelLTR(buffer);
}
 

/**
 * Extracts the fully qualified name of the declaring type of a method
 * reference.
 *
 * @param methodProposal a proposed method
 * @return the qualified name of the declaring type
 */
private String extractDeclaringTypeFQN(CompletionProposal methodProposal) {
	char[] declaringTypeSignature= methodProposal.getDeclarationSignature();
	// special methods may not have a declaring type: methods defined on arrays etc.
	// TODO remove when bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=84690 gets fixed
	if (declaringTypeSignature == null)
	{
		return OBJECT;
	}
	return SignatureUtil.stripSignatureToFQN(String.valueOf(declaringTypeSignature));
}
 

private void createLabelWithTypeAndDeclaration(CompletionProposal proposal, CompletionItem item) {
	char[] name= proposal.getCompletion();
	if (!isThisPrefix(name)) {
		name= proposal.getName();
	}
	StringBuilder buf= new StringBuilder();

	buf.append(name);
	item.setInsertText(buf.toString());
	char[] typeName= Signature.getSignatureSimpleName(proposal.getSignature());
	if (typeName.length > 0) {
		buf.append(VAR_TYPE_SEPARATOR);
		buf.append(typeName);
	}
	item.setLabel(buf.toString());

	char[] declaration= proposal.getDeclarationSignature();
	StringBuilder detailBuf = new StringBuilder();
	if (declaration != null) {
		setDeclarationSignature(item, String.valueOf(declaration));
		declaration= Signature.getSignatureSimpleName(declaration);
		if (declaration.length > 0) {
			if (proposal.getRequiredProposals() != null) {
				String declaringType= extractDeclaringTypeFQN(proposal);
				String qualifier= Signature.getQualifier(declaringType);
				if (qualifier.length() > 0) {
					detailBuf.append(qualifier);
					detailBuf.append('.');
				}
			}
			detailBuf.append(declaration);
		}
	}
	if (detailBuf.length() > 0) {
		detailBuf.append('.');
	}
	detailBuf.append(buf);
	item.setDetail(detailBuf.toString());
	setName(item,String.valueOf(name));
}
 

/**
 * Resolves the method described by the receiver and returns it if found.
 * Returns <code>null</code> if no corresponding member can be found.
 *
 * @param proposal
 *            - completion proposal
 * @param javaProject
 *            - Java project
 *
 * @return the resolved method or <code>null</code> if none is found
 * @throws JavaModelException
 *             if accessing the java model fails
 */

public static IMethod resolveMethod(CompletionProposal proposal, IJavaProject javaProject) throws JavaModelException {
	char[] declarationSignature = proposal.getDeclarationSignature();
	String typeName = SignatureUtil.stripSignatureToFQN(String.valueOf(declarationSignature));
	IType type = javaProject.findType(typeName);
	if (type != null) {
		String name = String.valueOf(proposal.getName());
		if (proposal.getKind() == CompletionProposal.ANNOTATION_ATTRIBUTE_REF) {
			IMethod method = type.getMethod(name, CharOperation.NO_STRINGS);
			if (method.exists()) {
				return method;
			} else {
				return null;
			}
		}
		char[] signature = proposal.getSignature();
		if (proposal instanceof InternalCompletionProposal) {
			Binding binding = ((InternalCompletionProposal) proposal).getBinding();
			if (binding instanceof MethodBinding) {
				MethodBinding methodBinding = (MethodBinding) binding;
				MethodBinding original = methodBinding.original();
				if (original != binding) {
					signature = Engine.getSignature(original);
				}
			}
		}
		String[] parameters = Signature.getParameterTypes(String.valueOf(SignatureUtil.fix83600(signature)));
		for (int i = 0; i < parameters.length; i++) {
			parameters[i] = SignatureUtil.getLowerBound(parameters[i]);
		}
		boolean isConstructor = proposal.isConstructor();

		return JavaModelUtil.findMethod(name, parameters, isConstructor, type);
	}

	return null;
}
 

/**
 * Extracts the fully qualified name of the declaring type of a method
 * reference.
 *
 * @param methodProposal a proposed method
 * @return the qualified name of the declaring type
 */
private String extractDeclaringTypeFQN(CompletionProposal methodProposal) {
	char[] declaringTypeSignature= methodProposal.getDeclarationSignature();
	// special methods may not have a declaring type: methods defined on arrays etc.
	// TODO remove when bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=84690 gets fixed
	if (declaringTypeSignature == null)
		return "java.lang.Object"; //$NON-NLS-1$
	return SignatureUtil.stripSignatureToFQN(String.valueOf(declaringTypeSignature));
}
 

StyledString createLabelWithTypeAndDeclaration(CompletionProposal proposal) {
	char[] name= proposal.getCompletion();
	if (!isThisPrefix(name))
		name= proposal.getName();

	StyledString buf= new StyledString();
	buf.append(name);
	char[] typeName= Signature.getSignatureSimpleName(proposal.getSignature());
	if (typeName.length > 0) {
		buf.append(VAR_TYPE_SEPARATOR);
		buf.append(typeName);
	}
	char[] declaration= proposal.getDeclarationSignature();
	if (declaration != null) {
		declaration= Signature.getSignatureSimpleName(declaration);
		if (declaration.length > 0) {
			buf.append(QUALIFIER_SEPARATOR, StyledString.QUALIFIER_STYLER);
			if (proposal.getRequiredProposals() != null) {
				String declaringType= extractDeclaringTypeFQN(proposal);
				String qualifier= Signature.getQualifier(declaringType);
				if (qualifier.length() > 0) {
					buf.append(qualifier, StyledString.QUALIFIER_STYLER);
					buf.append('.', StyledString.QUALIFIER_STYLER);
				}
			}
			buf.append(declaration, StyledString.QUALIFIER_STYLER);
		}
	}

	return Strings.markJavaElementLabelLTR(buf);
}
 

/**
 * copied from
 * org.eclipse.jdt.ui.text.java.CompletionProposalCollector.getDeclaringType(CompletionProposal)
 */
protected final char[] getDeclaringType(CompletionProposal proposal) {
	switch (proposal.getKind()) {
		case CompletionProposal.METHOD_DECLARATION:
		case CompletionProposal.METHOD_NAME_REFERENCE:
		case CompletionProposal.JAVADOC_METHOD_REF:
		case CompletionProposal.METHOD_REF:
		case CompletionProposal.CONSTRUCTOR_INVOCATION:
		case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
		case CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER:
		case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
		case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
		case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
		case CompletionProposal.FIELD_REF:
		case CompletionProposal.FIELD_REF_WITH_CASTED_RECEIVER:
		case CompletionProposal.JAVADOC_FIELD_REF:
		case CompletionProposal.JAVADOC_VALUE_REF:
			char[] declaration = proposal.getDeclarationSignature();
			// special methods may not have a declaring type: methods defined on arrays etc.
			// Currently known: class literals don't have a declaring type - use Object
			if (declaration == null) {
				return "java.lang.Object".toCharArray(); //$NON-NLS-1$
			}
			return Signature.toCharArray(declaration);
		case CompletionProposal.PACKAGE_REF:
		case CompletionProposal.MODULE_REF:
		case CompletionProposal.MODULE_DECLARATION:
			return proposal.getDeclarationSignature();
		case CompletionProposal.JAVADOC_TYPE_REF:
		case CompletionProposal.TYPE_REF:
			return Signature.toCharArray(proposal.getSignature());
		case CompletionProposal.LOCAL_VARIABLE_REF:
		case CompletionProposal.VARIABLE_DECLARATION:
		case CompletionProposal.KEYWORD:
		case CompletionProposal.LABEL_REF:
		case CompletionProposal.JAVADOC_BLOCK_TAG:
		case CompletionProposal.JAVADOC_INLINE_TAG:
		case CompletionProposal.JAVADOC_PARAM_REF:
			return null;
		default:
			Assert.isTrue(false);
			return null;
	}
}
 

@Override
public void accept(CompletionProposal proposal) {
	switch (proposal.getKind()) {
		case CompletionProposal.PACKAGE_REF :
			char[] packageName= proposal.getDeclarationSignature();
			if (TypeFilter.isFiltered(packageName))
				return;
			addAdjustedCompletion(
					new String(packageName),
					new String(proposal.getCompletion()),
					proposal.getReplaceStart(),
					proposal.getReplaceEnd(),
					proposal.getRelevance(),
					JavaPluginImages.DESC_OBJS_PACKAGE);
			return;

		case CompletionProposal.TYPE_REF :
			char[] signature= proposal.getSignature();
			char[] fullName= Signature.toCharArray(signature);
			if (TypeFilter.isFiltered(fullName))
				return;
			StringBuffer buf= new StringBuffer();
			buf.append(Signature.getSimpleName(fullName));
			if (buf.length() == 0)
				return; // this is the dummy class, whose $ have been converted to dots
			char[] typeQualifier= Signature.getQualifier(fullName);
			if (typeQualifier.length > 0) {
				buf.append(JavaElementLabels.CONCAT_STRING);
				buf.append(typeQualifier);
			}
			String name= buf.toString();

			// Only fully qualify if it's a top level type:
			boolean fullyQualify= fFullyQualify && CharOperation.equals(proposal.getDeclarationSignature(), typeQualifier);

			ImageDescriptor typeImageDescriptor;
			switch (Signature.getTypeSignatureKind(signature)) {
				case Signature.TYPE_VARIABLE_SIGNATURE :
					typeImageDescriptor= JavaPluginImages.DESC_OBJS_TYPEVARIABLE;
					break;
				case Signature.CLASS_TYPE_SIGNATURE :
					typeImageDescriptor= JavaElementImageProvider.getTypeImageDescriptor(false, false, proposal.getFlags(), false);
					break;
				default :
					typeImageDescriptor= null;
			}

			addAdjustedTypeCompletion(
					name,
					new String(proposal.getCompletion()),
					proposal.getReplaceStart(),
					proposal.getReplaceEnd(),
					proposal.getRelevance(),
					typeImageDescriptor,
					fullyQualify ? new String(fullName) : null);
			return;

		case CompletionProposal.KEYWORD:
			if (! fEnableBaseTypes)
				return;
			String keyword= new String(proposal.getName());
			if ( (fEnableVoid && VOID.equals(keyword)) || (fEnableBaseTypes && BASE_TYPES.contains(keyword)) )
				addAdjustedCompletion(
						keyword,
						new String(proposal.getCompletion()),
						proposal.getReplaceStart(),
						proposal.getReplaceEnd(),
						proposal.getRelevance(),
						null);
			return;

		default :
			return;
	}

}
 

/**
 * Returns the type signature of the declaring type of a
 * <code>CompletionProposal</code>, or <code>null</code> for proposals
 * that do not have a declaring type. The return value is <em>not</em>
 * <code>null</code> for proposals of the following kinds:
 * <ul>
 * <li>METHOD_DECLARATION</li>
 * <li>METHOD_NAME_REFERENCE</li>
 * <li>METHOD_REF</li>
 * <li>ANNOTATION_ATTRIBUTE_REF</li>
 * <li>POTENTIAL_METHOD_DECLARATION</li>
 * <li>ANONYMOUS_CLASS_DECLARATION</li>
 * <li>FIELD_REF</li>
 * <li>PACKAGE_REF (returns the package, but no type)</li>
 * <li>TYPE_REF</li>
 * </ul>
 *
 * @param proposal the completion proposal to get the declaring type for
 * @return the type signature of the declaring type, or <code>null</code> if there is none
 * @see Signature#toCharArray(char[])
 */
protected final char[] getDeclaringType(CompletionProposal proposal) {
	switch (proposal.getKind()) {
		case CompletionProposal.METHOD_DECLARATION:
		case CompletionProposal.METHOD_NAME_REFERENCE:
		case CompletionProposal.JAVADOC_METHOD_REF:
		case CompletionProposal.METHOD_REF:
		case CompletionProposal.CONSTRUCTOR_INVOCATION:
		case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
		case CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER:
		case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
		case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
		case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
		case CompletionProposal.FIELD_REF:
		case CompletionProposal.FIELD_REF_WITH_CASTED_RECEIVER:
		case CompletionProposal.JAVADOC_FIELD_REF:
		case CompletionProposal.JAVADOC_VALUE_REF:
			char[] declaration= proposal.getDeclarationSignature();
			// special methods may not have a declaring type: methods defined on arrays etc.
			// Currently known: class literals don't have a declaring type - use Object
			if (declaration == null)
				return "java.lang.Object".toCharArray(); //$NON-NLS-1$
			return Signature.toCharArray(declaration);
		case CompletionProposal.PACKAGE_REF:
			return proposal.getDeclarationSignature();
		case CompletionProposal.JAVADOC_TYPE_REF:
		case CompletionProposal.TYPE_REF:
			return Signature.toCharArray(proposal.getSignature());
		case CompletionProposal.LOCAL_VARIABLE_REF:
		case CompletionProposal.VARIABLE_DECLARATION:
		case CompletionProposal.KEYWORD:
		case CompletionProposal.LABEL_REF:
		case CompletionProposal.JAVADOC_BLOCK_TAG:
		case CompletionProposal.JAVADOC_INLINE_TAG:
		case CompletionProposal.JAVADOC_PARAM_REF:
			return null;
		default:
			Assert.isTrue(false);
			return null;
	}
}