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/*******************************************************************************
* Copyright (c) 2003, 2004 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 Corporation - initial API and implementation
*******************************************************************************/
/*
* Created on Jun 26, 2003
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package org.eclipse.cdt.internal.core.parser.ast.quick;
import org.eclipse.cdt.core.parser.ISourceElementRequestor;
import org.eclipse.cdt.core.parser.ast.ASTExpressionEvaluationException;
import org.eclipse.cdt.core.parser.ast.ASTNotImplementedException;
import org.eclipse.cdt.core.parser.ast.IASTExpression;
import org.eclipse.cdt.core.parser.ast.IASTNode;
import org.eclipse.cdt.core.parser.ast.IASTTypeId;
/**
* @author jcamelon
*/
public class ASTExpression implements IASTExpression {
private final Kind kind;
private static final String EMPTY_STRING = ""; //$NON-NLS-1$
/**
* @param kind
* @param id
*/
public ASTExpression(Kind kind ) {
this.kind = kind;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getExpressionKind()
*/
public Kind getExpressionKind() {
return kind;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getLHSExpression()
*/
public IASTExpression getLHSExpression() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getRHSExpression()
*/
public IASTExpression getRHSExpression() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getLiteralString()
*/
public String getLiteralString() {
return EMPTY_STRING;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getTypeId()
*/
public IASTTypeId getTypeId() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getNewExpressionDescriptor()
*/
public IASTNewExpressionDescriptor getNewExpressionDescriptor() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getThirdExpression()
*/
public IASTExpression getThirdExpression() {
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#evaluateExpression()
*/
public long evaluateExpression() throws ASTExpressionEvaluationException {
// primary expressions
if( getExpressionKind() == IASTExpression.Kind.PRIMARY_INTEGER_LITERAL )
{
try
{
if( getLiteralString().startsWith( "0x") || getLiteralString().startsWith( "0x") ) //$NON-NLS-1$ //$NON-NLS-2$
{
return Integer.parseInt( getLiteralString().substring(2), 16 );
}
if( getLiteralString().startsWith( "0") && getLiteralString().length() > 1 ) //$NON-NLS-1$
return Integer.parseInt( getLiteralString().substring(1), 8 );
return Integer.parseInt( getLiteralString() );
}
catch( NumberFormatException nfe )
{
throw new ASTExpressionEvaluationException();
}
}
if( getExpressionKind() == IASTExpression.Kind.PRIMARY_BRACKETED_EXPRESSION )
return getLHSExpression().evaluateExpression();
// unary not
if( getExpressionKind() == IASTExpression.Kind.UNARY_NOT_CASTEXPRESSION )
return ( ( getLHSExpression().evaluateExpression() == 0 ) ? 1 : 0 );
// multiplicative expressions
if( getExpressionKind() == IASTExpression.Kind.MULTIPLICATIVE_MULTIPLY )
return ( getLHSExpression().evaluateExpression() * getRHSExpression().evaluateExpression()) ;
if( getExpressionKind() == IASTExpression.Kind.MULTIPLICATIVE_DIVIDE )
return ( getLHSExpression().evaluateExpression() / getRHSExpression().evaluateExpression()) ;
if( getExpressionKind() == IASTExpression.Kind.MULTIPLICATIVE_MODULUS )
return ( getLHSExpression().evaluateExpression() % getRHSExpression().evaluateExpression()) ;
// additives
if( getExpressionKind() == IASTExpression.Kind.ADDITIVE_PLUS )
return ( getLHSExpression().evaluateExpression() + getRHSExpression().evaluateExpression()) ;
if( getExpressionKind() == IASTExpression.Kind.ADDITIVE_MINUS )
return ( getLHSExpression().evaluateExpression() - getRHSExpression().evaluateExpression()) ;
// shift expression
if( getExpressionKind() == IASTExpression.Kind.SHIFT_LEFT )
return ( getLHSExpression().evaluateExpression() << getRHSExpression().evaluateExpression()) ;
if( getExpressionKind() == IASTExpression.Kind.SHIFT_RIGHT )
return ( getLHSExpression().evaluateExpression() >> getRHSExpression().evaluateExpression()) ;
// relational
if( getExpressionKind() == IASTExpression.Kind.RELATIONAL_LESSTHAN )
return ( getLHSExpression().evaluateExpression() < getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
if( getExpressionKind() == IASTExpression.Kind.RELATIONAL_GREATERTHAN )
return ( getLHSExpression().evaluateExpression() > getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
if( getExpressionKind() == IASTExpression.Kind.RELATIONAL_LESSTHANEQUALTO )
return ( getLHSExpression().evaluateExpression() <= getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
if( getExpressionKind() == IASTExpression.Kind.RELATIONAL_GREATERTHANEQUALTO )
return ( getLHSExpression().evaluateExpression() >= getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
// equality
if( getExpressionKind() == IASTExpression.Kind.EQUALITY_EQUALS )
return ( getLHSExpression().evaluateExpression() == getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
if( getExpressionKind() == IASTExpression.Kind.EQUALITY_NOTEQUALS )
return ( getLHSExpression().evaluateExpression() != getRHSExpression().evaluateExpression() ? 1 : 0 ) ;
// and
if( getExpressionKind() == IASTExpression.Kind.ANDEXPRESSION )
return ( getLHSExpression().evaluateExpression() & getRHSExpression().evaluateExpression() ) ;
// xor
if( getExpressionKind() == IASTExpression.Kind.EXCLUSIVEOREXPRESSION )
return ( getLHSExpression().evaluateExpression() ^ getRHSExpression().evaluateExpression() ) ;
// or
if( getExpressionKind() == IASTExpression.Kind.INCLUSIVEOREXPRESSION )
return ( getLHSExpression().evaluateExpression() | getRHSExpression().evaluateExpression() ) ;
// logical and
if( getExpressionKind() == IASTExpression.Kind.LOGICALANDEXPRESSION )
return( ( getLHSExpression().evaluateExpression() != 0 ) && ( getRHSExpression().evaluateExpression() != 0 ) ) ? 1 : 0 ;
// logical or
if( getExpressionKind() == IASTExpression.Kind.LOGICALOREXPRESSION )
return( ( getLHSExpression().evaluateExpression() != 0 ) || ( getRHSExpression().evaluateExpression() != 0 ) ) ? 1 : 0 ;
if( getExpressionKind() == IASTExpression.Kind.CONDITIONALEXPRESSION )
{
return ( getLHSExpression().evaluateExpression() != 0 ) ? getRHSExpression().evaluateExpression() : getThirdExpression().evaluateExpression();
}
throw new ASTExpressionEvaluationException();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ISourceElementCallbackDelegate#acceptElement(org.eclipse.cdt.core.parser.ISourceElementRequestor)
*/
public void acceptElement(ISourceElementRequestor requestor)
{
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ISourceElementCallbackDelegate#enterScope(org.eclipse.cdt.core.parser.ISourceElementRequestor)
*/
public void enterScope(ISourceElementRequestor requestor)
{
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ISourceElementCallbackDelegate#exitScope(org.eclipse.cdt.core.parser.ISourceElementRequestor)
*/
public void exitScope(ISourceElementRequestor requestor)
{
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#getIdExpression()
*/
public String getIdExpression()
{
return null;
}
public char[] getIdExpressionCharArray(){
return null;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#reconcileReferences()
*/
public void reconcileReferences() throws ASTNotImplementedException
{
throw new ASTNotImplementedException();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#purgeReferences()
*/
public void purgeReferences() throws ASTNotImplementedException
{
throw new ASTNotImplementedException();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTNode#lookup(java.lang.String, org.eclipse.cdt.core.parser.ast.IASTNode.LookupKind[], org.eclipse.cdt.core.parser.ast.IASTNode)
*/
public ILookupResult lookup(String prefix, LookupKind[] k, IASTNode context, IASTExpression functionParameters) throws LookupError, ASTNotImplementedException {
// Not provided in this mode
throw new ASTNotImplementedException();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTExpression#freeReferences()
*/
public void freeReferences() {
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#setStartingOffsetAndLineNumber(int, int)
*/
public void setStartingOffsetAndLineNumber(int offset, int lineNumber) {
// TODO Auto-generated method stub
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#setEndingOffsetAndLineNumber(int, int)
*/
public void setEndingOffsetAndLineNumber(int offset, int lineNumber) {
// TODO Auto-generated method stub
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#getStartingOffset()
*/
public int getStartingOffset() {
// TODO Auto-generated method stub
return 0;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#getEndingOffset()
*/
public int getEndingOffset() {
// TODO Auto-generated method stub
return 0;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#getStartingLine()
*/
public int getStartingLine() {
// TODO Auto-generated method stub
return 0;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#getEndingLine()
*/
public int getEndingLine() {
// TODO Auto-generated method stub
return 0;
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.parser.ast.IASTOffsetableElement#getFilename()
*/
public char[] getFilename() {
// TODO Auto-generated method stub
return null;
}
}
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