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/*******************************************************************************
* Copyright (c) 2004, 2011 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.make.internal.core.scannerconfig.util;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.internal.core.SafeStringInterner;
/**
* Represents a symbol definition with possible multiple values
* example:
* LOG_LEVEL
* LOG_LEVEL = 2
* LOG_LEVEL = LOG_BASE + 1
* @author vhirsl
*/
public class SymbolEntry {
private static final String UNSPECIFIED_VALUE = "1"; //$NON-NLS-1$
private String name;
private Map<String, Boolean> values; // Values can be either in the active (selected) group or in the removed group
public SymbolEntry(String name, String value, boolean active) {
this.name = SafeStringInterner.safeIntern(name);
if (values == null) {
values = new LinkedHashMap<String, Boolean>(1);
}
values.put(SafeStringInterner.safeIntern(value), Boolean.valueOf(active));
}
public boolean add(String value, boolean active) {
Boolean old= values.put(SafeStringInterner.safeIntern(value), Boolean.valueOf(active));
return old == null || old.booleanValue() != active;
}
public void remove(String value) {
values.remove(value);
}
public void removeAll() {
values = null;
}
public List<String> getActive() {
return get(true, true, true);
}
public List<String> getActiveRaw() {
return get(false, true, true);
}
public List<String> getRemoved() {
return get(true, true, false);
}
public List<String> getRemovedRaw() {
return get(false, true, false);
}
public List<String> getAll() {
return get(true, false, true /*don't care*/);
}
public List<String> getAllRaw() {
return get(false, false, true /*don't care*/);
}
/**
* Utility function to retrieve values as a set.
*
* @param format - false = raw
* @param subset - false = all
* @param active - false = removed
* @return List
*/
private List<String> get(boolean format, boolean subset, boolean active) {
List<String> rv = new ArrayList<String>(values.size());
for (String val : values.keySet()) {
if (subset && (values.get(val)).booleanValue() != active)
continue;
if (format) {
rv.add(name + "=" + (val == null ? UNSPECIFIED_VALUE : val));//$NON-NLS-1$
}
else {
rv.add(name + (val == null ? "" : "=" + val));//$NON-NLS-1$ //$NON-NLS-2$
}
}
return rv;
}
/**
* Returns only value part of all active entries
* @return List
*/
public List<String> getValuesOnly(boolean active) {
List<String> rv = new ArrayList<String>(values.size());
for (Object element : values.keySet()) {
String val = (String) element;
if ((values.get(val)).booleanValue() == active) {
rv.add(val == null ? UNSPECIFIED_VALUE : val);
}
}
return rv;
}
public int numberOfValues() {
return values.size();
}
@Override
public String toString() {
StringBuilder buffer = new StringBuilder(name);
buffer.append(':');
for (String val : values.keySet()) {
buffer.append('\t');
buffer.append((val == null) ? "null" : val);//$NON-NLS-1$
if ((values.get(val)).booleanValue() == true) {
buffer.append("(active)");//$NON-NLS-1$
}
buffer.append('\n');
}
return SafeStringInterner.safeIntern(buffer.toString());
}
}
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