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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_IDL_INC_LEX_HXX
+#define INCLUDED_IDL_INC_LEX_HXX
+
+#include <sal/types.h>
+#include "hash.hxx"
+#include <tools/stream.hxx>
+#include <vector>
+#include <memory>
+
+enum class SVTOKENTYPE { Empty, Comment,
+ Integer, String,
+ Bool, Identifier,
+ Char,
+ EndOfFile, HashId };
+
+class SvToken
+{
+friend class SvTokenStream;
+ sal_uInt64 nLine, nColumn;
+ SVTOKENTYPE nType;
+ OString aString;
+ union
+ {
+ sal_uInt64 nLong;
+ bool bBool;
+ char cChar;
+ SvStringHashEntry * pHash;
+ };
+public:
+ SvToken();
+ SvToken( const SvToken & rObj ) = delete;
+
+ SvToken & operator = ( const SvToken & rObj );
+
+ OString GetTokenAsString() const;
+
+ void SetLine( sal_uInt64 nLineP ) { nLine = nLineP; }
+ sal_uInt64 GetLine() const { return nLine; }
+
+ void SetColumn( sal_uInt64 nColumnP ) { nColumn = nColumnP; }
+ sal_uInt64 GetColumn() const { return nColumn; }
+
+ bool IsComment() const { return nType == SVTOKENTYPE::Comment; }
+ bool IsInteger() const { return nType == SVTOKENTYPE::Integer; }
+ bool IsString() const { return nType == SVTOKENTYPE::String; }
+ bool IsBool() const { return nType == SVTOKENTYPE::Bool; }
+ bool IsIdentifierHash() const
+ { return nType == SVTOKENTYPE::HashId; }
+ bool IsIdentifier() const
+ {
+ return nType == SVTOKENTYPE::Identifier
+ || nType == SVTOKENTYPE::HashId;
+ }
+ bool IsChar() const { return nType == SVTOKENTYPE::Char; }
+ bool IsEof() const { return nType == SVTOKENTYPE::EndOfFile; }
+
+ const OString& GetString() const
+ {
+ return IsIdentifierHash()
+ ? pHash->GetName()
+ : aString;
+ }
+ sal_uInt64 GetNumber() const { return nLong; }
+ bool GetBool() const { return bBool; }
+ char GetChar() const { return cChar; }
+
+ void SetHash( SvStringHashEntry * pHashP )
+ { pHash = pHashP; nType = SVTOKENTYPE::HashId; }
+ bool Is( SvStringHashEntry const * pEntry ) const
+ { return IsIdentifierHash() && pHash == pEntry; }
+};
+
+inline SvToken::SvToken()
+ : nLine(0)
+ , nColumn(0)
+ , nType( SVTOKENTYPE::Empty )
+{
+}
+
+class SvTokenStream
+{
+ sal_uInt64 nLine, nColumn;
+ sal_Int32 nBufPos;
+ char c; // next character
+ static const sal_uInt16 nTabSize = 4; // length of tabulator
+ OString aStrTrue;
+ OString aStrFalse;
+ sal_uInt32 nMaxPos;
+
+ std::unique_ptr<SvFileStream> pInStream;
+ OUString aFileName;
+ std::vector<std::unique_ptr<SvToken> > aTokList;
+ std::vector<std::unique_ptr<SvToken> >::iterator pCurToken;
+
+ OString aBufStr;
+
+ void InitCtor();
+
+ char GetNextChar();
+ char GetFastNextChar()
+ {
+ return (nBufPos < aBufStr.getLength())
+ ? aBufStr[nBufPos++]
+ : '\0';
+ }
+
+ void FillTokenList();
+ sal_uInt64 GetNumber();
+ bool MakeToken( SvToken & );
+ bool IsEof() const { return pInStream->eof(); }
+ void SetMax()
+ {
+ sal_uInt32 n = Tell();
+ if( n > nMaxPos )
+ nMaxPos = n;
+ }
+ void CalcColumn()
+ {
+ // if end of line spare calculation
+ if( 0 != c )
+ {
+ sal_Int32 n = 0;
+ nColumn = 0;
+ while( n < nBufPos )
+ nColumn += aBufStr[n++] == '\t' ? nTabSize : 1;
+ }
+ }
+public:
+ SvTokenStream( const OUString & rFileName );
+ ~SvTokenStream();
+
+ const OUString & GetFileName() const { return aFileName; }
+ SvStream & GetStream() { return *pInStream; }
+
+ SvToken& GetToken_PrevAll()
+ {
+ std::vector<std::unique_ptr<SvToken> >::iterator pRetToken = pCurToken;
+
+ // current iterator always valid
+ if(pCurToken != aTokList.begin())
+ --pCurToken;
+
+ return *(*pRetToken);
+ }
+
+ SvToken& GetToken_Next()
+ {
+ std::vector<std::unique_ptr<SvToken> >::iterator pRetToken = pCurToken++;
+
+ if (pCurToken == aTokList.end())
+ pCurToken = pRetToken;
+
+ SetMax();
+
+ return *(*pRetToken);
+ }
+
+ SvToken& GetToken() const { return *(*pCurToken); }
+
+ bool ReadIf( char cChar )
+ {
+ if( GetToken().IsChar() && cChar == GetToken().GetChar() )
+ {
+ GetToken_Next();
+ return true;
+ }
+ else
+ return false;
+ }
+
+ void ReadIfDelimiter()
+ {
+ if( GetToken().IsChar()
+ && (';' == GetToken().GetChar()
+ || ',' == GetToken().GetChar()) )
+ {
+ GetToken_Next();
+ }
+ }
+
+ sal_uInt32 Tell() const { return pCurToken-aTokList.begin(); }
+
+ void Seek( sal_uInt32 nPos )
+ {
+ pCurToken = aTokList.begin() + nPos;
+ SetMax();
+ }
+
+ void SeekToMax()
+ {
+ pCurToken = aTokList.begin()+nMaxPos;
+ }
+};
+
+
+#endif // INCLUDED_IDL_INC_LEX_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */