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/*******************************************************************************
* Copyright (c) 2004, 2010 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:
* Andrew Niefer (IBM Corporation) - initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ILinkage;
import org.eclipse.cdt.core.dom.ast.ASTNodeProperty;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTElaboratedTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
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.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.core.dom.ast.IValue;
import org.eclipse.cdt.core.dom.ast.c.ICASTElaboratedTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.c.ICASTEnumerationSpecifier;
import org.eclipse.cdt.core.index.IIndexBinding;
import org.eclipse.cdt.internal.core.dom.Linkage;
import org.eclipse.core.runtime.PlatformObject;
/**
* Binding for enumerations in C.
*/
public class CEnumeration extends PlatformObject implements IEnumeration, ICInternalBinding {
private IASTName[] declarations = null;
private IASTName definition = null;
private Long fMinValue;
private Long fMaxValue;
public CEnumeration(IASTName enumeration) {
ASTNodeProperty prop = enumeration.getPropertyInParent();
if (prop == IASTElaboratedTypeSpecifier.TYPE_NAME)
declarations = new IASTName[] { enumeration };
else
definition = enumeration;
enumeration.setBinding(this);
}
public void addDeclaration(IASTName decl) {
if (!decl.isActive())
return;
if (decl.getPropertyInParent() != IASTElaboratedTypeSpecifier.TYPE_NAME)
return;
decl.setBinding(this);
if (declarations == null) {
declarations = new IASTName[] { decl };
return;
}
for (int i = 0; i < declarations.length; i++) {
if (declarations[i] == null) {
declarations[i] = decl;
return;
}
}
IASTName tmp[] = new IASTName[declarations.length * 2];
System.arraycopy(declarations, 0, tmp, 0, declarations.length);
tmp[declarations.length] = decl;
declarations = tmp;
}
public IASTNode getPhysicalNode() {
if (definition != null)
return definition;
return declarations[0];
}
private void checkForDefinition() {
IASTDeclSpecifier spec = CVisitor.findDefinition((ICASTElaboratedTypeSpecifier) declarations[0].getParent());
if (spec != null && spec instanceof ICASTEnumerationSpecifier) {
ICASTEnumerationSpecifier enumSpec = (ICASTEnumerationSpecifier) spec;
enumSpec.getName().setBinding(this);
definition = enumSpec.getName();
}
return;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IBinding#getName()
*/
public String getName() {
if (definition != null)
return definition.toString();
return declarations[0].toString();
}
public char[] getNameCharArray() {
if (definition != null)
return definition.toCharArray();
return declarations[0].toCharArray();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IBinding#getScope()
*/
public IScope getScope() {
return CVisitor.getContainingScope(definition != null ? definition : declarations[0].getParent());
}
@Override
public Object clone() {
IType t = null;
try {
t = (IType) super.clone();
} catch (CloneNotSupportedException e) {
//not going to happen
}
return t;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IEnumeration#getEnumerators()
*/
public IEnumerator[] getEnumerators() {
if (definition == null) {
checkForDefinition();
if (definition == null)
return new IEnumerator[] { new CEnumerator.CEnumeratorProblem(declarations[0], IProblemBinding.SEMANTIC_DEFINITION_NOT_FOUND, declarations[0].toCharArray()) };
}
IASTEnumerationSpecifier enumSpec = (IASTEnumerationSpecifier) definition.getParent();
IASTEnumerationSpecifier.IASTEnumerator[] enums = enumSpec.getEnumerators();
IEnumerator[] bindings = new IEnumerator[enums.length];
for (int i = 0; i < enums.length; i++) {
bindings[i] = (IEnumerator) enums[i].getName().resolveBinding();
}
return bindings;
}
public void addDefinition(IASTName name) {
if (name.isActive())
definition = name;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IType#isSameType(org.eclipse.cdt.core.dom.ast.IType)
*/
public boolean isSameType(IType type) {
if (type == this)
return true;
if (type instanceof ITypedef || type instanceof IIndexBinding)
return type.isSameType(this);
return false;
}
public ILinkage getLinkage() {
return Linkage.C_LINKAGE;
}
public IASTNode[] getDeclarations() {
return declarations;
}
public IASTNode getDefinition() {
return definition;
}
public IBinding getOwner() throws DOMException {
IASTNode node= definition;
if (node == null && declarations != null && declarations.length > 0) {
node= declarations[0];
}
// either local or global, never part of structs
return CVisitor.findEnclosingFunction(node);
}
@Override
public String toString() {
return getName();
}
public long getMinValue() {
if (fMinValue != null)
return fMinValue.longValue();
long minValue = Long.MAX_VALUE;
IEnumerator[] enumerators = getEnumerators();
for (IEnumerator enumerator : enumerators) {
IValue value = enumerator.getValue();
if (value != null) {
Long val = value.numericalValue();
if (val != null) {
long v = val.longValue();
if (v < minValue) {
minValue = v;
}
}
}
}
fMinValue= minValue;
return minValue;
}
public long getMaxValue() {
if (fMaxValue != null)
return fMaxValue.longValue();
long maxValue = Long.MIN_VALUE;
IEnumerator[] enumerators = getEnumerators();
for (IEnumerator enumerator : enumerators) {
IValue value = enumerator.getValue();
if (value != null) {
Long val = value.numericalValue();
if (val != null) {
long v = val.longValue();
if (v > maxValue) {
maxValue = v;
}
}
}
}
fMaxValue= maxValue;
return maxValue;
}
}
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