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123 lines
3.9 KiB
C++
123 lines
3.9 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Dreftool.
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*
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* The Initial Developer of the Original Code is
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* Rick Gessner <rick@gessner.com>.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Kenneth Herron <kjh-5727@comcast.net>
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* Bernd Mielke <bmlk@gmx.de>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "CCPPTokenizer.h"
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#include "CScanner.h"
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#include "CToken.h"
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#include "tokens.h"
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#include <ctype.h>
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CCPPTokenizer::CCPPTokenizer() : mTokens(0) {
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}
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/********************************************************
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* Process: Destroy the tokenizer
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* Usage:
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* Calls:
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* Notes:
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*********************************************************/
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CCPPTokenizer::~CCPPTokenizer() {
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CToken* theToken=0;
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while((theToken=(CToken*)mTokens.Pop())){
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delete theToken;
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}
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}
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int consumeToken(CScanner& aScanner,CToken** aToken){
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static nsCAutoString gOperatorChars("/?.<>[]{}~^+=-!%&*(),|:");
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char theChar=0;
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int result=aScanner.getChar(theChar);
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if(kNoError==result){
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if((isspace(theChar)) || (theChar>=kSpace)) {
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if('#'==theChar)
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*aToken=(CToken*)new CCompilerDirectiveToken();
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else if((theChar=='_') || (isalpha(theChar)))
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*aToken=(CToken*)new CIdentifierToken();
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else if(isdigit(theChar))
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*aToken=(CToken*)new CNumberToken();
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else if((kLF==theChar) || (kCR==theChar))
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*aToken=(CToken*)new CNewlineToken();
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else if(isspace(theChar))
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*aToken=(CToken*)new CWhitespaceToken();
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else if(-1<gOperatorChars.FindChar(theChar)) {
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PRUnichar nextChar;
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aScanner.peek(nextChar);
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if((kForwardSlash==theChar) && ((kForwardSlash==nextChar) || (kAsterisk==nextChar))){
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*aToken=(CToken*)new CCommentToken(nextChar);
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}
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else *aToken=(CToken*)new COperatorToken();
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}
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else if((kQuote==theChar) || (kApostrophe==theChar))
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*aToken=(CToken*)new CQuotedStringToken();
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else if(kSemicolon==theChar) {
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*aToken=(CToken*)new CSemicolonToken();
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}
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if(*aToken){
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result=(*aToken)->consume(theChar,aScanner);
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}
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}
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}
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return result;
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}
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int32 CCPPTokenizer::tokenize(CScanner& aScanner){
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int result=0;
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while(kNoError==result){
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CToken* theToken=0;
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result=consumeToken(aScanner,&theToken);
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if(theToken) {
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mTokens.Push(theToken);
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}
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}
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return result;
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}
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CToken* CCPPTokenizer::getTokenAt(int anIndex){
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if((anIndex>=0) && (anIndex<mTokens.GetSize())){
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return (CToken*)mTokens.ObjectAt(anIndex);
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}
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return 0;
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}
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