Java Code Examples for org.eclipse.jdt.core.Signature#C_EXTENDS

The following examples show how to use org.eclipse.jdt.core.Signature#C_EXTENDS . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SignatureUtil.java    From Eclipse-Postfix-Code-Completion with Eclipse Public License 1.0 5 votes vote down vote up 
/**
 * Returns the lower bound of a type signature. Returns the null type
 * signature if <code>signature</code> is a wildcard or upper bound (<code>? extends T</code>);
 * returns the signature of the type <code>T</code> of a lower bound (<code>? super T</code>)
 * or <code>signature</code> itself if it is not a bound signature.
 *
 * @param signature the signature
 * @return the lower bound signature of <code>signature</code>
 */
public static char[] getLowerBound(char[] signature) {
	if (signature.length < 1)
		return signature;

	if (signature.length == 1 && signature[0] == Signature.C_STAR)
		return signature;

	int superIndex= indexOf(signature, Signature.C_EXTENDS);
	if (superIndex == 0)
		return NULL_TYPE_SIGNATURE_ARRAY;

	if (superIndex != -1) {
		char afterSuper= signature[superIndex + 1];
		if (afterSuper == Signature.C_STAR || afterSuper == Signature.C_EXTENDS)
			// impossible captured type
			return NULL_TYPE_SIGNATURE_ARRAY;
	}

	char[][] typeArguments= Signature.getTypeArguments(signature);
	for (int i= 0; i < typeArguments.length; i++)
		if (Arrays.equals(typeArguments[i], NULL_TYPE_SIGNATURE_ARRAY))
			return NULL_TYPE_SIGNATURE_ARRAY;

	if (signature[0] == Signature.C_SUPER) {
		char[] type= new char[signature.length - 1];
		System.arraycopy(signature, 1, type, 0, signature.length - 1);
		return type;
	}

	return signature;
}
Example 2
Source File: JavaElementLabelComposer.java    From eclipse.jdt.ls with Eclipse Public License 2.0 4 votes vote down vote up 
protected void appendTypeSignatureLabel(IJavaElement enclosingElement, String typeSig, long flags) {
	int sigKind= Signature.getTypeSignatureKind(typeSig);
	switch (sigKind) {
	case Signature.BASE_TYPE_SIGNATURE:
		fBuilder.append(Signature.toString(typeSig));
		break;
	case Signature.ARRAY_TYPE_SIGNATURE:
		appendTypeSignatureLabel(enclosingElement, Signature.getElementType(typeSig), flags);
		for (int dim= Signature.getArrayCount(typeSig); dim > 0; dim--) {
			fBuilder.append('[').append(']');
		}
		break;
	case Signature.CLASS_TYPE_SIGNATURE:
		String baseType= getSimpleTypeName(enclosingElement, typeSig);
		fBuilder.append(baseType);

		String[] typeArguments= Signature.getTypeArguments(typeSig);
		appendTypeArgumentSignaturesLabel(enclosingElement, typeArguments, flags);
		break;
	case Signature.TYPE_VARIABLE_SIGNATURE:
		fBuilder.append(getSimpleTypeName(enclosingElement, typeSig));
		break;
	case Signature.WILDCARD_TYPE_SIGNATURE:
		char ch= typeSig.charAt(0);
		if (ch == Signature.C_STAR) { //workaround for bug 85713
			fBuilder.append('?');
		} else {
			if (ch == Signature.C_EXTENDS) {
				fBuilder.append("? extends "); //$NON-NLS-1$
				appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
			} else if (ch == Signature.C_SUPER) {
				fBuilder.append("? super "); //$NON-NLS-1$
				appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
			}
		}
		break;
	case Signature.CAPTURE_TYPE_SIGNATURE:
		appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
		break;
	case Signature.INTERSECTION_TYPE_SIGNATURE:
		String[] typeBounds= Signature.getIntersectionTypeBounds(typeSig);
		appendTypeBoundsSignaturesLabel(enclosingElement, typeBounds, flags);
		break;
	default:
		// unknown
	}
}
Example 3
Source File: JavaElementLabelComposer.java    From Eclipse-Postfix-Code-Completion with Eclipse Public License 1.0 4 votes vote down vote up 
protected void appendTypeSignatureLabel(IJavaElement enclosingElement, String typeSig, long flags) {
	int sigKind= Signature.getTypeSignatureKind(typeSig);
	switch (sigKind) {
		case Signature.BASE_TYPE_SIGNATURE:
			fBuffer.append(Signature.toString(typeSig));
			break;
		case Signature.ARRAY_TYPE_SIGNATURE:
			appendTypeSignatureLabel(enclosingElement, Signature.getElementType(typeSig), flags);
			for (int dim= Signature.getArrayCount(typeSig); dim > 0; dim--) {
				fBuffer.append('[').append(']');
			}
			break;
		case Signature.CLASS_TYPE_SIGNATURE:
			String baseType= getSimpleTypeName(enclosingElement, typeSig);
			fBuffer.append(baseType);

			String[] typeArguments= Signature.getTypeArguments(typeSig);
			appendTypeArgumentSignaturesLabel(enclosingElement, typeArguments, flags);
			break;
		case Signature.TYPE_VARIABLE_SIGNATURE:
			fBuffer.append(getSimpleTypeName(enclosingElement, typeSig));
			break;
		case Signature.WILDCARD_TYPE_SIGNATURE:
			char ch= typeSig.charAt(0);
			if (ch == Signature.C_STAR) { //workaround for bug 85713
				fBuffer.append('?');
			} else {
				if (ch == Signature.C_EXTENDS) {
					fBuffer.append("? extends "); //$NON-NLS-1$
					appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
				} else if (ch == Signature.C_SUPER) {
					fBuffer.append("? super "); //$NON-NLS-1$
					appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
				}
			}
			break;
		case Signature.CAPTURE_TYPE_SIGNATURE:
			appendTypeSignatureLabel(enclosingElement, typeSig.substring(1), flags);
			break;
		case Signature.INTERSECTION_TYPE_SIGNATURE:
			String[] typeBounds= Signature.getIntersectionTypeBounds(typeSig);
			appendTypeBoundsSignaturesLabel(enclosingElement, typeBounds, flags);
			break;
		default:
			// unknown
	}
}