diff options
Diffstat (limited to '3rdparty/clucene/src/CLucene/queryParser/TokenList.cpp')
-rw-r--r-- | 3rdparty/clucene/src/CLucene/queryParser/TokenList.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/3rdparty/clucene/src/CLucene/queryParser/TokenList.cpp b/3rdparty/clucene/src/CLucene/queryParser/TokenList.cpp new file mode 100644 index 000000000..7d30b931f --- /dev/null +++ b/3rdparty/clucene/src/CLucene/queryParser/TokenList.cpp @@ -0,0 +1,79 @@ +/*------------------------------------------------------------------------------ +* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team +* +* Distributable under the terms of either the Apache License (Version 2.0) or +* the GNU Lesser General Public License, as specified in the COPYING file. +------------------------------------------------------------------------------*/ +#include "CLucene/StdHeader.h" +#include "TokenList.h" + +#include "CLucene/util/VoidMap.h" +#include "CLucene/util/VoidList.h" +#include "QueryToken.h" + +CL_NS_DEF(queryParser) + + TokenList::TokenList(){ + //Func - Constructor + //Pre - true + //Post - Instance has been created + } + + TokenList::~TokenList(){ + //Func - Destructor + //Pre - true + //Post - The tokenlist has been destroyed + + tokens.clear(); + } + + void TokenList::add(QueryToken* token){ + //Func - Adds a QueryToken token to the TokenList + //Pre - token != NULL + //Post - token has been added to the token list + + CND_PRECONDITION(token != NULL, "token != NULL"); + + tokens.insert(tokens.begin(),token); + } + + void TokenList::push(QueryToken* token){ + //Func - + //Pre - token != NULL + //Post - + + CND_PRECONDITION(token != NULL, "token is NULL"); + + tokens.push_back(token); + } + + QueryToken* TokenList::peek() { + /* DSR:2004.11.01: Reverted my previous (circa April 2004) fix (which + ** raised an exception if Peek was called when there were no tokens) in + ** favor of returning the EOF token. This solution is much better + ** integrated with the rest of the code in the queryParser subsystem. */ + size_t nTokens = tokens.size(); + if (nTokens == 0) { + push(_CLNEW QueryToken(QueryToken::EOF_)); + nTokens++; + } + return tokens[nTokens-1]; + } + + QueryToken* TokenList::extract(){ + //Func - Extract token from the TokenList + //Pre - true + //Post - Retracted token has been returned + + QueryToken* token = peek(); + //Retract the current peeked token + tokens.delete_back(); + + return token; + } + + int32_t TokenList::count() const + { + return tokens.size(); + } +CL_NS_END |