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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.core.model;
import org.eclipse.cdt.internal.core.model.IConstants;
/**
* Utility class for decoding modifier flags in C elements.
*
* @noinstantiate This class is not intended to be instantiated by clients.
*/
public final class Flags {
/**
* Not instantiable.
*/
private Flags() {}
/**
* Returns whether the given integer includes the <code>abstract</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>abstract</code> modifier is included
*/
public static boolean isAbstract(int flags) {
return (flags & IConstants.AccAbstract) != 0;
}
/**
*
* Return whether the give integer include the keyword <code>export</code> modifier.
* @param flags the flags
* @return <code>true</code> if the element is <code>export</code>
*/
public static boolean isExport(int flags) {
return (flags & IConstants.AccExport) != 0;
}
/**
* Returns whether the given integer includes the <code>inline</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>inline</code> modifier is included
*/
public static boolean isInline(int flags) {
return (flags & IConstants.AccInline) != 0;
}
/**
* Returns whether the given integer includes the <code>explicit</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if <code>explicit</code> modifier is included
*/
public static boolean isExplicit(int flags) {
return (flags & IConstants.AccExplicit) != 0;
}
/**
* Returns whether the given integer includes the <code>private</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>private</code> modifier is included
*/
public static boolean isPrivate(int flags) {
return (flags & IConstants.AccPrivate) != 0;
}
/**
* Returns whether the given integer includes the <code>protected</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>protected</code> modifier is included
*/
public static boolean isProtected(int flags) {
return (flags & IConstants.AccProtected) != 0;
}
/**
* Returns whether the given integer includes the <code>public</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>public</code> modifier is included
*/
public static boolean isPublic(int flags) {
return (flags & IConstants.AccPublic) != 0;
}
/**
* Returns whether the given integer includes the <code>static</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>static</code> modifier is included
*/
public static boolean isStatic(int flags) {
return (flags & IConstants.AccStatic) != 0;
}
/**
* Returns whether the given integer includes the <code>extern</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>extern</code> modifier is included
*/
public static boolean isExtern(int flags) {
return (flags & IConstants.AccExtern) != 0;
}
/**
* Returns whether the given integer includes the <code>mutable</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>mutable</code> modifier is included
*/
public static boolean isMutable(int flags) {
return (flags & IConstants.AccMutable) != 0;
}
/**
* Returns whether the given integer includes the indication that the
* element is a register storage specifier.
*
* @param flags the flags
* @return <code>true</code> if the element is marked register storage specifier
*/
public static boolean isRegister(int flags) {
return (flags & IConstants.AccRegister) != 0;
}
/**
* Returns whether the given integer includes the <code>virtual</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>virtual</code> modifier is included
*/
public static boolean isVirtual(int flags) {
return (flags & IConstants.AccVirtual) != 0;
}
/**
* Returns whether the given integer includes the <code>volatile</code> modifier.
*
* @param flags the flags
* @return <code>true</code> if the <code>volatile</code> modifier is included
*/
public static boolean isVolatile(int flags) {
return (flags & IConstants.AccVolatile) != 0;
}
/**
* Returns a standard string describing the given modifier flags.
* Only modifier flags are included in the output; the deprecated and
* synthetic flags are ignored if set.
* <p>
* Examples results:
* <pre>
* <code>"public static"</code>
* <code>"private"</code>
* </pre>
* </p>
*
* @param flags the flags
* @return the standard string representation of the given flags
*/
public static String toString(int flags) {
StringBuilder sb = new StringBuilder();
if (isPublic(flags)) sb.append("public "); //$NON-NLS-1$
if (isProtected(flags)) sb.append("protected "); //$NON-NLS-1$
if (isPrivate(flags)) sb.append("private "); //$NON-NLS-1$
if (isStatic(flags)) sb.append("static "); //$NON-NLS-1$
if (isAbstract(flags)) sb.append("abstract "); //$NON-NLS-1$
if (isVirtual(flags)) sb.append("virtual "); //$NON-NLS-1$
if (isInline(flags)) sb.append("inline "); //$NON-NLS-1$
if (isExtern(flags)) sb.append("extern "); //$NON-NLS-1$
if (isExport(flags)) sb.append("export "); //$NON-NLS-1$
if (isVolatile(flags)) sb.append("volatile "); //$NON-NLS-1$
if (isExplicit(flags)) sb.append("explicit "); //$NON-NLS-1$
int len = sb.length();
if (len == 0) return ""; //$NON-NLS-1$
sb.setLength(len-1);
return sb.toString();
}
}
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