/*******************************************************************************
* Copyright (c) 2007, 2013 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.parser.scanner;
import org.eclipse.cdt.core.parser.IGCCToken;
import org.eclipse.cdt.core.parser.IToken;
import org.eclipse.cdt.core.parser.Keywords;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
public class TokenUtil {
private static final char[] SPACE = {' '};
private static final char[] IMAGE_POUND_POUND = "##".toCharArray(); //$NON-NLS-1$
private static final char[] IMAGE_POUND = "#".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_LBRACE= "<%".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_RBRACE= "%>".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_LBRACKET= "<:".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_RBRACKET= ":>".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_POUND = "%:".toCharArray(); //$NON-NLS-1$
private static final char[] DIGRAPH_POUNDPOUND = "%:%:".toCharArray(); //$NON-NLS-1$
public static boolean isOperator(int kind) {
switch (kind) {
case IToken.t_delete: case IToken.t_new:
// bit operations
case IToken.tAMPER: case IToken.tAMPERASSIGN:
case IToken.tARROW: case IToken.tARROWSTAR:
case IToken.tBITOR: case IToken.tBITORASSIGN:
case IToken.tBITCOMPLEMENT:
case IToken.tSHIFTL: case IToken.tSHIFTLASSIGN:
case IToken.tSHIFTR: case IToken.tSHIFTRASSIGN:
case IToken.tXOR: case IToken.tXORASSIGN:
// logical operations
case IToken.tNOT: case IToken.tAND: case IToken.tOR:
// arithmetic
case IToken.tDECR: case IToken.tINCR:
case IToken.tDIV: case IToken.tDIVASSIGN:
case IToken.tMINUS: case IToken.tMINUSASSIGN:
case IToken.tMOD: case IToken.tMODASSIGN:
case IToken.tPLUS: case IToken.tPLUSASSIGN:
case IToken.tSTAR: case IToken.tSTARASSIGN:
case IGCCToken.tMAX: case IGCCToken.tMIN:
// comparison
case IToken.tEQUAL: case IToken.tNOTEQUAL:
case IToken.tGT: case IToken.tGTEQUAL:
case IToken.tLT: case IToken.tLTEQUAL:
// other
case IToken.tASSIGN: case IToken.tCOMMA:
return true;
}
return false;
}
public static char[] getImage(int type) {
switch (type) {
case IToken.tPOUND: return IMAGE_POUND;
case IToken.tPOUNDPOUND: return IMAGE_POUND_POUND;
case IToken.tCOLONCOLON: return Keywords.cpCOLONCOLON;
case IToken.tCOLON: return Keywords.cpCOLON;
case IToken.tSEMI: return Keywords.cpSEMI;
case IToken.tCOMMA: return Keywords.cpCOMMA;
case IToken.tQUESTION: return Keywords.cpQUESTION;
case IToken.tLPAREN : return Keywords.cpLPAREN;
case IToken.tRPAREN : return Keywords.cpRPAREN;
case IToken.tLBRACKET: return Keywords.cpLBRACKET;
case IToken.tRBRACKET: return Keywords.cpRBRACKET;
case IToken.tLBRACE: return Keywords.cpLBRACE;
case IToken.tRBRACE: return Keywords.cpRBRACE;
case IToken.tPLUSASSIGN: return Keywords.cpPLUSASSIGN;
case IToken.tINCR: return Keywords.cpINCR;
case IToken.tPLUS: return Keywords.cpPLUS;
case IToken.tMINUSASSIGN: return Keywords.cpMINUSASSIGN;
case IToken.tDECR: return Keywords.cpDECR;
case IToken.tARROWSTAR: return Keywords.cpARROWSTAR;
case IToken.tARROW: return Keywords.cpARROW;
case IToken.tMINUS: return Keywords.cpMINUS;
case IToken.tSTARASSIGN: return Keywords.cpSTARASSIGN;
case IToken.tSTAR: return Keywords.cpSTAR;
case IToken.tMODASSIGN: return Keywords.cpMODASSIGN;
case IToken.tMOD: return Keywords.cpMOD;
case IToken.tXORASSIGN: return Keywords.cpXORASSIGN;
case IToken.tXOR: return Keywords.cpXOR;
case IToken.tAMPERASSIGN: return Keywords.cpAMPERASSIGN;
case IToken.tAND: return Keywords.cpAND;
case IToken.tAMPER: return Keywords.cpAMPER;
case IToken.tBITORASSIGN: return Keywords.cpBITORASSIGN;
case IToken.tOR: return Keywords.cpOR;
case IToken.tBITOR: return Keywords.cpBITOR;
case IToken.tBITCOMPLEMENT: return Keywords.cpCOMPL;
case IToken.tNOTEQUAL: return Keywords.cpNOTEQUAL;
case IToken.tNOT: return Keywords.cpNOT;
case IToken.tEQUAL: return Keywords.cpEQUAL;
case IToken.tASSIGN: return Keywords.cpASSIGN;
case IToken.tSHIFTL: return Keywords.cpSHIFTL;
case IToken.tLTEQUAL: return Keywords.cpLTEQUAL;
case IToken.tLT: return Keywords.cpLT;
case IToken.tSHIFTRASSIGN: return Keywords.cpSHIFTRASSIGN;
case IToken.tSHIFTR: return Keywords.cpSHIFTR;
case IToken.tGTEQUAL: return Keywords.cpGTEQUAL;
case IToken.tGT_in_SHIFTR:
case IToken.tGT: return Keywords.cpGT;
case IToken.tSHIFTLASSIGN: return Keywords.cpSHIFTLASSIGN;
case IToken.tELLIPSIS: return Keywords.cpELLIPSIS;
case IToken.tDOTSTAR: return Keywords.cpDOTSTAR;
case IToken.tDOT: return Keywords.cpDOT;
case IToken.tDIVASSIGN: return Keywords.cpDIVASSIGN;
case IToken.tDIV: return Keywords.cpDIV;
case IGCCToken.tMIN: return Keywords.cpMIN;
case IGCCToken.tMAX: return Keywords.cpMAX;
case CPreprocessor.tSPACE: return SPACE;
case CPreprocessor.tNOSPACE: return CharArrayUtils.EMPTY;
default:
return CharArrayUtils.EMPTY;
}
}
public static char[] getDigraphImage(int type) {
switch (type) {
case IToken.tPOUND: return DIGRAPH_POUND;
case IToken.tPOUNDPOUND: return DIGRAPH_POUNDPOUND;
case IToken.tLBRACKET: return DIGRAPH_LBRACKET;
case IToken.tRBRACKET: return DIGRAPH_RBRACKET;
case IToken.tLBRACE: return DIGRAPH_LBRACE;
case IToken.tRBRACE: return DIGRAPH_RBRACE;
default:
assert false: type;
return CharArrayUtils.EMPTY;
}
}
/**
* Returns the last token in the given token list.
* @throws NullPointerException if the argument is null
*/
public static IToken getLast(IToken tokenList) {
IToken last;
do {
last = tokenList;
} while ((tokenList = tokenList.getNext()) != null);
return last;
}
}