Java CompletionProposal.CONSTRUCTOR_INVOCATION属性代码示例

/**
 * Creates and returns a parameter list of the given method or type proposal suitable for
 * display. The list does not include parentheses. The lower bound of parameter types is
 * returned.
 * <p>
 * Examples:
 *
 * <pre>
 *   &quot;void method(int i, String s)&quot; -&gt; &quot;int i, String s&quot;
 *   &quot;? extends Number method(java.lang.String s, ? super Number n)&quot; -&gt; &quot;String s, Number n&quot;
 * </pre>
 *
 * </p>
 *
 * @param proposal the proposal to create the parameter list for
 * @return the list of comma-separated parameters suitable for display
 */
public StringBuilder createParameterList(CompletionProposal proposal) {
	int kind= proposal.getKind();
	switch (kind) {
	case CompletionProposal.METHOD_REF:
	case CompletionProposal.CONSTRUCTOR_INVOCATION:
		return appendUnboundedParameterList(new StringBuilder(), proposal);
	case CompletionProposal.TYPE_REF:
	case CompletionProposal.JAVADOC_TYPE_REF:
		return appendTypeParameterList(new StringBuilder(), proposal);
	case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
	case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
		return appendUnboundedParameterList(new StringBuilder(), proposal);
	default:
		Assert.isLegal(false);
		return null; // dummy
	}
}
 

private void appendMethodNameReplacement(StringBuilder buffer, CompletionProposal proposal) {
	if (proposal.getKind() == CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER) {
		String coreCompletion = String.valueOf(proposal.getCompletion());
		if (client.isCompletionSnippetsSupported()) {
			coreCompletion = CompletionUtils.sanitizeCompletion(coreCompletion);
		}
		//			String lineDelimiter = TextUtilities.getDefaultLineDelimiter(getTextViewer().getDocument());
		//			String replacement= CodeFormatterUtil.format(CodeFormatter.K_EXPRESSION, coreCompletion, 0, lineDelimiter, fInvocationContext.getProject());
		//			buffer.append(replacement.substring(0, replacement.lastIndexOf('.') + 1));
		buffer.append(coreCompletion);
	}

	if (proposal.getKind() != CompletionProposal.CONSTRUCTOR_INVOCATION) {
		String str = new String(proposal.getName());
		if (client.isCompletionSnippetsSupported()) {
			str = CompletionUtils.sanitizeCompletion(str);
		}
		buffer.append(str);
	}

}
 

/**
 * Creates and returns a parameter list of the given method or type proposal suitable for display.
 * The list does not include parentheses. The lower bound of parameter types is returned.
 *
 * <p>Examples:
 *
 * <pre>
 *   &quot;void method(int i, String s)&quot; -&gt; &quot;int i, String s&quot;
 *   &quot;? extends Number method(java.lang.String s, ? super Number n)&quot; -&gt; &quot;String s, Number n&quot;
 * </pre>
 *
 * @param proposal the proposal to create the parameter list for
 * @return the list of comma-separated parameters suitable for display
 */
public String createParameterList(CompletionProposal proposal) {
  String paramList;
  int kind = proposal.getKind();
  switch (kind) {
    case CompletionProposal.METHOD_REF:
    case CompletionProposal.CONSTRUCTOR_INVOCATION:
      paramList = appendUnboundedParameterList(new StyledString(), proposal).getString();
      return Strings.markJavaElementLabelLTR(paramList);
    case CompletionProposal.TYPE_REF:
    case CompletionProposal.JAVADOC_TYPE_REF:
      paramList = appendTypeParameterList(new StyledString(), proposal).getString();
      return Strings.markJavaElementLabelLTR(paramList);
    case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
    case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
      paramList = appendUnboundedParameterList(new StyledString(), proposal).getString();
      return Strings.markJavaElementLabelLTR(paramList);
    default:
      Assert.isLegal(false);
      return null; // dummy
  }
}
 

/**
 * Tells whether required proposals are supported by this proposal.
 *
 * @return <code>true</code> if required proposals are supported by this proposal
 * @see org.eclipse.jdt.core.CompletionProposal#getRequiredProposals()
 * @since 3.3
 */
protected boolean isSupportingRequiredProposals() {
  if (fInvocationContext == null) return false;

  ProposalInfo proposalInfo = getProposalInfo();
  if (!(proposalInfo instanceof MemberProposalInfo
      || proposalInfo instanceof AnonymousTypeProposalInfo)) return false;

  CompletionProposal proposal = ((MemberProposalInfo) proposalInfo).fProposal;
  return proposal != null
      && (proposal.getKind() == CompletionProposal.METHOD_REF
          || proposal.getKind() == CompletionProposal.FIELD_REF
          || proposal.getKind() == CompletionProposal.TYPE_REF
          || proposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION
          || proposal.getKind() == CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION);
}
 

@Override
protected IContextInformation computeContextInformation() {
  // no context information for METHOD_NAME_REF proposals (e.g. for static imports)
  // https://bugs.eclipse.org/bugs/show_bug.cgi?id=94654
  if ((fProposal.getKind() == CompletionProposal.METHOD_REF
          || fProposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION)
      && hasParameters()
      && (getReplacementString().endsWith(RPAREN)
          || getReplacementString().endsWith(SEMICOLON)
          || getReplacementString().length() == 0)) {
    ProposalContextInformation contextInformation = new ProposalContextInformation(fProposal);
    if (fContextInformationPosition != 0 && fProposal.getCompletion().length == 0)
      contextInformation.setContextInformationPosition(fContextInformationPosition);
    return contextInformation;
  }
  return super.computeContextInformation();
}
 

/**
 * Appends everything up to the method name including the opening parenthesis.
 *
 * <p>In case of {@link org.eclipse.jdt.core.CompletionProposal#METHOD_REF_WITH_CASTED_RECEIVER}
 * it add cast.
 *
 * @param buffer the string buffer
 * @since 3.4
 */
protected void appendMethodNameReplacement(StringBuffer buffer) {
  if (fProposal.getKind() == CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER) {
    String coreCompletion = String.valueOf(fProposal.getCompletion());
    String lineDelimiter = TextUtilities.getDefaultLineDelimiter(getTextViewer().getDocument());
    String replacement =
        CodeFormatterUtil.format(
            CodeFormatter.K_EXPRESSION,
            coreCompletion,
            0,
            lineDelimiter,
            fInvocationContext.getProject());
    buffer.append(replacement.substring(0, replacement.lastIndexOf('.') + 1));
  }

  if (fProposal.getKind() != CompletionProposal.CONSTRUCTOR_INVOCATION)
    buffer.append(fProposal.getName());

  FormatterPrefs prefs = getFormatterPrefs();
  if (prefs.beforeOpeningParen) buffer.append(SPACE);
  buffer.append(LPAREN);
}
 

@Override
protected boolean isValidPrefix(String prefix) {
  if (super.isValidPrefix(prefix)) return true;

  String word = TextProcessor.deprocess(getDisplayString());
  if (fProposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION) {
    int start =
        word.indexOf(JavaElementLabels.CONCAT_STRING) + JavaElementLabels.CONCAT_STRING.length();
    word = word.substring(start);
    return isPrefix(prefix, word) || isPrefix(prefix, new String(fProposal.getName()));
  }

  if (isInJavadoc()) {
    int idx = word.indexOf("{@link "); // $NON-NLS-1$
    if (idx == 0) {
      word = word.substring(7);
    } else {
      idx = word.indexOf("{@value "); // $NON-NLS-1$
      if (idx == 0) {
        word = word.substring(8);
      }
    }
  }
  return isPrefix(prefix, word);
}
 

/**
 * Creates and returns the method signature suitable for display.
 *
 * @param proposal
 *            the proposal to create the description for
 * @return the string of method signature suitable for display
 */
public StringBuilder createMethodProposalDescription(CompletionProposal proposal) {
	int kind = proposal.getKind();
	StringBuilder description = new StringBuilder();
	switch (kind) {
		case CompletionProposal.METHOD_REF:
		case CompletionProposal.METHOD_NAME_REFERENCE:
		case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
		case CompletionProposal.CONSTRUCTOR_INVOCATION:

			// method name
			description.append(proposal.getName());

			// parameters
			description.append('(');
			appendUnboundedParameterList(description, proposal);
			description.append(')');

			// return type
			if (!proposal.isConstructor()) {
				// TODO remove SignatureUtil.fix83600 call when bugs are fixed
				char[] returnType = createTypeDisplayName(SignatureUtil.getUpperBound(Signature.getReturnType(SignatureUtil.fix83600(proposal.getSignature()))));
				description.append(RETURN_TYPE_SEPARATOR);
				description.append(returnType);
			}
	}
	return description; // dummy
}
 

/**
 * Computes the relevance for a given <code>CompletionProposal</code>.
 *
 * @param proposal the proposal to compute the relevance for
 * @return the relevance for <code>proposal</code>
 */
public static String computeSortText(CompletionProposal proposal) {
	final int baseRelevance= proposal.getRelevance() * 16;
	switch (proposal.getKind()) {
	case CompletionProposal.LABEL_REF:
		return convertRelevance( baseRelevance + 1);
	case CompletionProposal.KEYWORD:
		return convertRelevance(baseRelevance + 2);
	case CompletionProposal.TYPE_REF:
	case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
	case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
		return convertRelevance(baseRelevance + 3);
	case CompletionProposal.METHOD_REF:
	case CompletionProposal.CONSTRUCTOR_INVOCATION:
	case CompletionProposal.METHOD_NAME_REFERENCE:
	case CompletionProposal.METHOD_DECLARATION:
	case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
	case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
		return convertRelevance(baseRelevance + 4);
	case CompletionProposal.FIELD_REF:
		return convertRelevance(baseRelevance + 5);
	case CompletionProposal.LOCAL_VARIABLE_REF:
	case CompletionProposal.VARIABLE_DECLARATION:
		return convertRelevance(baseRelevance + 6);
	case CompletionProposal.PACKAGE_REF://intentional fall-through
	default:
		return convertRelevance(baseRelevance);
	}
}
 

private boolean isSupportingRequiredProposals(CompletionProposal proposal) {
	return proposal != null
			&& (proposal.getKind() == CompletionProposal.METHOD_REF
			|| proposal.getKind() == CompletionProposal.FIELD_REF
			|| proposal.getKind() == CompletionProposal.TYPE_REF
					|| proposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION || proposal.getKind() == CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION
					|| proposal.getKind() == CompletionProposal.ANONYMOUS_CLASS_DECLARATION);
}
 

/**
 * Computes the relevance for a given <code>CompletionProposal</code>.
 *
 * <p>Subclasses may replace, but usually should not need to.
 *
 * @param proposal the proposal to compute the relevance for
 * @return the relevance for <code>proposal</code>
 */
protected int computeRelevance(CompletionProposal proposal) {
  final int baseRelevance = proposal.getRelevance() * 16;
  switch (proposal.getKind()) {
    case CompletionProposal.PACKAGE_REF:
      return baseRelevance + 0;
    case CompletionProposal.LABEL_REF:
      return baseRelevance + 1;
    case CompletionProposal.KEYWORD:
      return baseRelevance + 2;
    case CompletionProposal.TYPE_REF:
    case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
    case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
      return baseRelevance + 3;
    case CompletionProposal.METHOD_REF:
    case CompletionProposal.CONSTRUCTOR_INVOCATION:
    case CompletionProposal.METHOD_NAME_REFERENCE:
    case CompletionProposal.METHOD_DECLARATION:
    case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
      return baseRelevance + 4;
    case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
      return baseRelevance + 4 /* + 99 */;
    case CompletionProposal.FIELD_REF:
      return baseRelevance + 5;
    case CompletionProposal.LOCAL_VARIABLE_REF:
    case CompletionProposal.VARIABLE_DECLARATION:
      return baseRelevance + 6;
    default:
      return baseRelevance;
  }
}
 

/**
 * 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>METHOD_NAME_REFERENCE
 *   <li>METHOD_REF
 *   <li>ANNOTATION_ATTRIBUTE_REF
 *   <li>POTENTIAL_METHOD_DECLARATION
 *   <li>ANONYMOUS_CLASS_DECLARATION
 *   <li>FIELD_REF
 *   <li>PACKAGE_REF (returns the package, but no type)
 *   <li>TYPE_REF
 * </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 org.eclipse.jdt.core.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;
  }
}
 

protected int computeRelevance() {
  final int baseRelevance = fProposal.getRelevance() * 16;
  switch (fProposal.getKind()) {
    case CompletionProposal.PACKAGE_REF:
      return baseRelevance + 0;
    case CompletionProposal.LABEL_REF:
      return baseRelevance + 1;
    case CompletionProposal.KEYWORD:
      return baseRelevance + 2;
    case CompletionProposal.TYPE_REF:
    case CompletionProposal.ANONYMOUS_CLASS_DECLARATION:
    case CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION:
      return baseRelevance + 3;
    case CompletionProposal.METHOD_REF:
    case CompletionProposal.CONSTRUCTOR_INVOCATION:
    case CompletionProposal.METHOD_NAME_REFERENCE:
    case CompletionProposal.METHOD_DECLARATION:
    case CompletionProposal.ANNOTATION_ATTRIBUTE_REF:
      return baseRelevance + 4;
    case CompletionProposal.POTENTIAL_METHOD_DECLARATION:
      return baseRelevance + 4 /* + 99 */;
    case CompletionProposal.FIELD_REF:
      return baseRelevance + 5;
    case CompletionProposal.LOCAL_VARIABLE_REF:
    case CompletionProposal.VARIABLE_DECLARATION:
      return baseRelevance + 6;
    default:
      return baseRelevance;
  }
}
 

@Override
public int getPrefixCompletionStart(IDocument document, int completionOffset) {
  if (fProposal.getKind() == CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER) {
    return fProposal.getTokenStart();
  } else if (fProposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION)
    return fProposal.getRequiredProposals()[0].getReplaceStart();
  return super.getPrefixCompletionStart(document, completionOffset);
}
 

@Override
public CharSequence getPrefixCompletionText(IDocument document, int completionOffset) {
  if (hasArgumentList() || fProposal.getKind() == CompletionProposal.CONSTRUCTOR_INVOCATION) {
    String completion = String.valueOf(fProposal.getName());
    if (isCamelCaseMatching()) {
      String prefix = getPrefix(document, completionOffset);
      return getCamelCaseCompound(prefix, completion);
    }
    return completion;
  }
  return super.getPrefixCompletionText(document, completionOffset);
}