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/*******************************************************************************
* Copyright (c) 2006, 2015 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Doug Schaefer (QNX) - Initial API and implementation
* Markus Schorn (Wind River Systems)
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom.cpp;
import java.util.List;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.IPDOMNode;
import org.eclipse.cdt.core.dom.IPDOMVisitor;
import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IEnumeration;
import org.eclipse.cdt.core.dom.ast.IEnumerator;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPEnumeration;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPScope;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.dom.parser.ProblemBinding;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPInternalBinding;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil;
import org.eclipse.cdt.internal.core.index.IIndexCPPBindingConstants;
import org.eclipse.cdt.internal.core.pdom.db.Database;
import org.eclipse.cdt.internal.core.pdom.db.PDOMNodeLinkedList;
import org.eclipse.cdt.internal.core.pdom.dom.IPDOMMemberOwner;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNode;
import org.eclipse.core.runtime.CoreException;
/**
* Enumerations in the index.
*/
class PDOMCPPEnumeration extends PDOMCPPBinding implements IPDOMCPPEnumType, IPDOMMemberOwner {
private static final int OFFSET_ENUMERATOR_LIST = PDOMBinding.RECORD_SIZE;
private static final int OFFSET_MIN_VALUE = OFFSET_ENUMERATOR_LIST + Database.PTR_SIZE;
private static final int OFFSET_MAX_VALUE = OFFSET_MIN_VALUE + 8;
private static final int OFFSET_FIXED_TYPE = OFFSET_MAX_VALUE + 8;
private static final int OFFSET_FLAGS = OFFSET_FIXED_TYPE + Database.TYPE_SIZE;
@SuppressWarnings("hiding")
protected static final int RECORD_SIZE = OFFSET_FLAGS + 1;
private Long fMinValue; // No need for volatile, all fields of Long are final.
private Long fMaxValue; // No need for volatile, all fields of Long are final.
private volatile IType fFixedType = ProblemBinding.NOT_INITIALIZED;
private PDOMCPPEnumScope fScope; // No need for volatile, all fields of PDOMCPPEnumScope are final.
public PDOMCPPEnumeration(PDOMLinkage linkage, PDOMNode parent, ICPPEnumeration enumeration) throws CoreException {
super(linkage, parent, enumeration.getNameCharArray());
storeProperties(enumeration);
}
public PDOMCPPEnumeration(PDOMLinkage linkage, long record) {
super(linkage, record);
}
@Override
public void update(PDOMLinkage linkage, IBinding newBinding) throws CoreException {
storeProperties((ICPPEnumeration) newBinding);
}
private void storeProperties(ICPPEnumeration enumeration) throws CoreException {
final Database db = getDB();
db.putByte(record + OFFSET_FLAGS, enumeration.isScoped() ? (byte) 1 : (byte) 0);
getLinkage().storeType(record + OFFSET_FIXED_TYPE, enumeration.getFixedType());
if (enumeration instanceof ICPPInternalBinding) {
if (((ICPPInternalBinding) enumeration).getDefinition() != null) {
final long minValue = enumeration.getMinValue();
final long maxValue = enumeration.getMaxValue();
db.putLong(record + OFFSET_MIN_VALUE, minValue);
db.putLong(record + OFFSET_MAX_VALUE, maxValue);
fMinValue = minValue;
fMaxValue = maxValue;
}
}
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexCPPBindingConstants.CPPENUMERATION;
}
@Override
public IEnumerator[] getEnumerators() {
return PDOMCPPEnumScope.getEnumerators(this);
}
@Override
public void accept(IPDOMVisitor visitor) throws CoreException {
PDOMCPPEnumScope.acceptViaCache(this, visitor);
}
@Override
public void addChild(PDOMNode node) throws CoreException {
if (node instanceof PDOMCPPEnumerator) {
PDOMNodeLinkedList list = new PDOMNodeLinkedList(getLinkage(), record + OFFSET_ENUMERATOR_LIST);
list.addMember(node);
PDOMCPPEnumScope.updateCache(this, (IPDOMCPPEnumerator) node);
}
}
@Override
public boolean mayHaveChildren() {
return true;
}
@Override
public boolean isSameType(IType type) {
if (type instanceof ITypedef) {
return type.isSameType(this);
}
if (type instanceof PDOMNode) {
PDOMNode node = (PDOMNode) type;
if (node.getPDOM() == getPDOM()) {
return node.getRecord() == getRecord();
}
}
if (type instanceof IEnumeration) {
IEnumeration etype = (IEnumeration) type;
char[] nchars = etype.getNameCharArray();
if (nchars.length == 0) {
nchars = ASTTypeUtil.createNameForAnonymous(etype);
}
if (nchars == null || !CharArrayUtils.equals(nchars, getNameCharArray()))
return false;
return SemanticUtil.haveSameOwner(this, etype);
}
return false;
}
@Override
public long getMinValue() {
if (fMinValue != null) {
return fMinValue.longValue();
}
long minValue = 0;
try {
minValue = getDB().getLong(record + OFFSET_MIN_VALUE);
} catch (CoreException e) {
}
fMinValue = minValue;
return minValue;
}
@Override
public long getMaxValue() {
if (fMaxValue != null) {
return fMaxValue.longValue();
}
long maxValue = 0;
try {
maxValue = getDB().getLong(record + OFFSET_MAX_VALUE);
} catch (CoreException e) {
}
fMaxValue = maxValue;
return maxValue;
}
@Override
public Object clone() {
throw new IllegalArgumentException("Enums must not be cloned"); //$NON-NLS-1$
}
@Override
public boolean isScoped() {
try {
return getDB().getByte(record + OFFSET_FLAGS) != 0;
} catch (CoreException e) {
return false;
}
}
@Override
public IType getFixedType() {
if (fFixedType == ProblemBinding.NOT_INITIALIZED) {
fFixedType = loadFixedType();
}
return fFixedType;
}
private IType loadFixedType() {
try {
return getLinkage().loadType(record + OFFSET_FIXED_TYPE);
} catch (CoreException e) {
CCorePlugin.log(e);
return null;
}
}
@Override
public ICPPScope asScope() {
if (fScope == null) {
fScope = new PDOMCPPEnumScope(this);
}
return fScope;
}
@Override
public void loadEnumerators(final List<IPDOMCPPEnumerator> enumerators) {
try {
PDOMNodeLinkedList list = new PDOMNodeLinkedList(getLinkage(), record + OFFSET_ENUMERATOR_LIST);
list.accept(new IPDOMVisitor() {
@Override
public boolean visit(IPDOMNode node) throws CoreException {
if (node instanceof IPDOMCPPEnumerator) {
enumerators.add((IPDOMCPPEnumerator) node);
}
return true;
}
@Override
public void leave(IPDOMNode node) {
}
});
} catch (CoreException e) {
CCorePlugin.log(e);
}
}
}
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