/*******************************************************************************
* 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:
* Devin Steffler (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.ast.IFunctionType;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.internal.core.dom.parser.ISerializableType;
import org.eclipse.cdt.internal.core.dom.parser.ITypeMarshalBuffer;
import org.eclipse.core.runtime.CoreException;
public class CFunctionType implements IFunctionType, ISerializableType {
private final IType[] parameters;
private final IType returnType;
public CFunctionType( IType returnType, IType [] types ) {
this.returnType = returnType;
this.parameters = types;
}
public boolean isSameType( IType o ){
if( o == this )
return true;
if( o instanceof ITypedef )
return o.isSameType( this );
if( o instanceof IFunctionType ){
IFunctionType ft = (IFunctionType) o;
IType [] fps;
fps = ft.getParameterTypes();
if( fps.length != parameters.length )
return false;
if( ! returnType.isSameType( ft.getReturnType() ) )
return false;
for( int i = 0; i < parameters.length; i++ )
if( ! parameters[i].isSameType( fps[i] ) )
return false;
return true;
}
return false;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IFunctionType#getReturnType()
*/
public IType getReturnType() {
return returnType;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.dom.ast.IFunctionType#getParameterTypes()
*/
public IType[] getParameterTypes() {
return parameters;
}
@Override
public Object clone(){
IType t = null;
try {
t = (IType) super.clone();
} catch ( CloneNotSupportedException e ) {
//not going to happen
}
return t;
}
public void marshal(ITypeMarshalBuffer buffer) throws CoreException {
int firstByte= ITypeMarshalBuffer.FUNCTION_TYPE;
int len= parameters.length & 0xffff;
int codedLen= len * ITypeMarshalBuffer.FLAG1;
if (codedLen < ITypeMarshalBuffer.FLAG4) {
firstByte |= codedLen;
buffer.putByte((byte) firstByte);
} else {
firstByte |= ITypeMarshalBuffer.FLAG4;
buffer.putByte((byte) firstByte);
buffer.putShort((short) len);
}
buffer.marshalType(returnType);
for (int i = 0; i < len; i++) {
buffer.marshalType(parameters[i]);
}
}
public static IType unmarshal(int firstByte, ITypeMarshalBuffer buffer) throws CoreException {
int len;
if (((firstByte & ITypeMarshalBuffer.FLAG4) != 0)) {
len= buffer.getShort();
} else {
len= (firstByte & (ITypeMarshalBuffer.FLAG4-1))/ITypeMarshalBuffer.FLAG1;
}
IType rt= buffer.unmarshalType();
IType[] pars= new IType[len];
for (int i = 0; i < pars.length; i++) {
pars[i]= buffer.unmarshalType();
}
return new CFunctionType(rt, pars);
}
}