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https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
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783 lines
16 KiB
C++
783 lines
16 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef RY_PD_TOKENIZER_H
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#define RY_PD_TOKENIZER_H
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// Nel Misc
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#include "nel/misc/types_nl.h"
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#include <nel/misc/debug.h>
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#include <nel/misc/file.h>
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// STL
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#include <string>
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#include <map>
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#include <string.h>
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#include <ctype.h>
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enum TToken
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{
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TokenUnknown,
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TokenEOF,
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TokenIncludeScript,
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TokenIdentifier,
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TokenScopedIdentifier,
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TokenRefineScope,
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TokenNumber,
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TokenString,
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TokenCppCode,
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TokenSlash,
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TokenDescription,
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TokenOpenBrace,
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TokenCloseBrace,
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TokenOpenParenthesis,
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TokenCloseParenthesis,
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TokenOpenBracket,
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TokenCloseBracket,
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TokenLessThan,
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TokenGreaterThan,
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TokenEqual,
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TokenComma,
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TokenDot,
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TokenColon,
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TokenSemiColon,
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TokenMinus,
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TokenPlus,
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TokenTimes,
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TokenAntiSlash,
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TokenMod,
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TokenSharp,
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TokenAnd,
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TokenOr,
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TokenCirc,
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TokenInterrog,
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TokenExclam,
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TokenClass,
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TokenEnum,
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TokenDimension,
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TokenParent,
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TokenFlag,
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TokenFile,
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TokenDb,
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TokenType,
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TokenKey,
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TokenHidden,
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TokenExtern,
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TokenMirrored,
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TokenImplements,
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TokenMapped,
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TokenDerived,
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TokenInitFill,
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TokenReserve,
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TokenInclude,
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TokenWriteTrigger,
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TokenSeparated,
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TokenUsePch,
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TokenLogMsg,
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TokenLogContext,
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};
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class CTokenizer
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{
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public:
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class CToken
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{
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public:
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CToken(uint start = 0, uint end = 0, TToken token = TokenUnknown, CTokenizer* tokenizer = NULL) : Tokenizer(tokenizer), Start(start), End(end), Token(token) {}
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CToken(CTokenizer* tokenizer) : Tokenizer(tokenizer), Start(0), End(0), Token(TokenUnknown) {}
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CTokenizer* Tokenizer;
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uint Start;
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uint End;
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TToken Token;
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std::string get() const { return Tokenizer->get(*this); }
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};
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CTokenizer() : _Buffer(NULL), _Size(0), _CurrentToken(0) { }
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CTokenizer(const std::string &text)
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{
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init(text);
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}
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~CTokenizer()
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{
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clear();
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}
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/// Init
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void readFile(const std::string &filename)
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{
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clear();
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NLMISC::CIFile f;
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if (!f.open(filename))
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return;
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uint size = f.getFileSize();
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char *buffer = new char[size+1];
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f.serialBuffer((uint8*)buffer, size);
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buffer[size] = '\0';
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f.close();
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_File = filename;
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init(std::string(buffer));
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delete buffer;
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}
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/// Init
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void init(const std::string &text)
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{
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_Str = text;
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init(_Str.c_str());
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}
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/// Init
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void init(const char* text, uint size = 0)
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{
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_Size = (size > 0 ? size : (uint)strlen(text));
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_Buffer = text;
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nlassert(_Buffer != NULL);
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_TempToken.Start = 0;
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_TempToken.End = 0;
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_CurrentToken = 0;
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_Mark = 0;
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initOneLetterTokens();
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initKeywords();
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}
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///
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bool tokenize()
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{
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while (true)
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{
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CToken token = nextToken();
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nlassert(token.Tokenizer != NULL);
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if (token.Token == TokenUnknown)
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return false;
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if (token.Token == TokenEOF)
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break;
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if (token.Token == TokenIncludeScript)
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{
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CToken scriptFile = nextToken();
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if (scriptFile.Token != TokenString)
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error(scriptFile);
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std::string file = scriptFile.get();
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CTokenizer* sub = new CTokenizer();
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_Includes.push_back(sub);
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sub->readFile(file);
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if (!sub->tokenize())
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return false;
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_Tokens.insert(_Tokens.end(), sub->_Tokens.begin(), sub->_Tokens.end());
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}
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else
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{
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_Tokens.push_back(token);
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}
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}
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std::vector<CToken>::iterator it;
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for (it=_Tokens.begin(); it!=_Tokens.end(); ++it)
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{
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if ((*it).Token == TokenIdentifier)
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{
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std::vector<CToken>::iterator startit = it;
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std::vector<CToken>::iterator endit = it;
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while ((++it) != _Tokens.end() &&
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(*it).Token == TokenRefineScope &&
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(*it).Tokenizer == (*startit).Tokenizer &&
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(++it) != _Tokens.end() &&
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(*it).Token == TokenIdentifier &&
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(*it).Tokenizer == (*startit).Tokenizer)
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{
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endit = it;
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}
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if (endit != startit)
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{
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CToken newToken(this);
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newToken.Token = TokenScopedIdentifier;
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newToken.Start = (*startit).Start;
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newToken.End = (*endit).End;
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++endit;
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it = _Tokens.erase(startit, endit);
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it = _Tokens.insert(it, newToken);
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}
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}
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}
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return true;
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}
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///
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bool next()
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{
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++_CurrentToken;
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return (!end());
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}
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///
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const CToken ¤tToken() const
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{
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nlassert(!end());
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return _Tokens[_CurrentToken];
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}
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///
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TToken current() const
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{
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return currentToken().Token;
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}
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///
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bool end() const
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{
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return _CurrentToken >= _Tokens.size();
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}
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///
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void push()
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{
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_Stack.push_back(_CurrentToken);
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}
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///
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void pop()
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{
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nlassert(!_Stack.empty());
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_CurrentToken = _Stack.back();
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if (_CurrentToken < _Mark)
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error(_Tokens[_Mark], "parse");
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_Stack.pop_back();
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}
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///
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void leaveMark()
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{
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_Mark = _CurrentToken;
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}
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/// get token text
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std::string get(const CToken &token) const
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{
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nlassert(token.Tokenizer != NULL);
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if (token.Tokenizer != this)
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return token.Tokenizer->get(token);
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std::string str(_Buffer+token.Start, token.End-token.Start);
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if (token.Token == TokenString)
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{
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std::string::size_type pos = 0;
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while ((pos = str.find('\\', pos)) != std::string::npos)
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{
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if (pos+1 == str.size())
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break;
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switch (str[pos+1])
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{
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case 'n':
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str.erase(pos, 2);
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str.insert(pos, "\n");
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break;
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case 'r':
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str.erase(pos, 2);
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str.insert(pos, "\r");
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break;
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case 't':
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str.erase(pos, 2);
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str.insert(pos, "\t");
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break;
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default:
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str.erase(pos, 1);
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++pos;
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break;
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}
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}
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}
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return str;
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}
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/// get file, line
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void getFileLine(const CToken& token, uint &line, uint &col, std::string &file)
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{
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nlassert(token.Tokenizer != NULL);
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if (token.Tokenizer != this)
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{
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token.Tokenizer->getFileLine(token, line, col, file);
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return;
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}
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file = _File;
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uint n = 0;
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uint pos = token.Start;
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line = 1;
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col = 1;
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while (n < pos)
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{
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if (_Buffer[n] == '\0')
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break;
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if (_Buffer[n] == '\t')
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col += 4;
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else if (_Buffer[n] != '\r')
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++col;
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if (_Buffer[n] == '\n')
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++line, col = 1;
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++n;
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}
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}
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/// error at
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void error(const CToken& token, const char *errType = "syntax", const char *errMsg = NULL)
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{
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if (token.Tokenizer != this && token.Tokenizer != NULL)
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{
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token.Tokenizer->error(token, errType, errMsg);
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return;
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}
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uint pos = token.Start;
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uint n = 0;
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uint line = 1, col = 1;
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uint lineStartAt = 0, lineEndAt;
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while (n < pos)
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{
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if (_Buffer[n] == '\0')
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break;
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if (_Buffer[n] == '\t')
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col += 4;
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else if (_Buffer[n] != '\r')
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++col;
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else
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lineStartAt = n+1;
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if (_Buffer[n] == '\n')
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++line, col = 1, lineStartAt = n+1;
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++n;
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}
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lineEndAt = n;
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while (_Buffer[lineEndAt] != '\0' && _Buffer[lineEndAt] != '\n' && _Buffer[lineEndAt] != '\r')
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++lineEndAt;
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NLMISC::createDebug ();
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std::string errorMsg = NLMISC::toString("PD_PARSE: file %s, %s error at line %d, column %d%s%s", _File.c_str(), errType, line, col, (errMsg != NULL ? ": " : ""), (errMsg != NULL ? errMsg : ""));
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NLMISC::ErrorLog->displayRawNL("%s", errorMsg.c_str());
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std::string extr(_Buffer+lineStartAt, lineEndAt-lineStartAt);
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NLMISC::ErrorLog->displayRawNL("%s", extr.c_str());
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uint i;
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for (i=0; i<extr.size() && i<n-lineStartAt; ++i)
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if (extr[i] != '\t')
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extr[i] = ' ';
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extr.erase(n-lineStartAt);
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extr += '^';
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NLMISC::ErrorLog->displayRawNL("%s", extr.c_str());
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nlerror("%s", errorMsg.c_str());
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}
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private:
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/// Original text
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std::string _Str;
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/// Parsed buffer
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const char *_Buffer;
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/// Buffer size
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uint _Size;
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/// Keywords
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std::map<std::string, TToken> _Keywords;
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/// One letter tokens
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TToken _OneLetterTokens[256];
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/// List of tokens
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std::vector<CToken> _Tokens;
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/// Current token
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uint _CurrentToken;
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/// State stack
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std::vector<uint> _Stack;
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/// Currently used token
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CToken _TempToken;
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/// Mark
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uint _Mark;
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/// Loaded file
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std::string _File;
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/// Subtokenizers
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std::vector<CTokenizer*> _Includes;
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void clear()
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{
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_Str.clear();
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_Size = 0;
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_TempToken.Start = 0;
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_TempToken.End = 0;
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_Buffer = NULL;
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_Mark = 0;
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_File.clear();
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}
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CToken nextToken()
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{
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skipSpaces();
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if (posAtEnd())
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return CToken(0, 0, TokenEOF, this);
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_TempToken.Start = _TempToken.End;
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_TempToken.Token = TokenUnknown;
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_TempToken.Tokenizer = this;
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char parse = popChar();
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if (isalpha(parse) || parse == '_')
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{
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// identifier
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while (!posAtEnd() && (isalnum(parse = getChar()) || parse == '_'))
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popChar();
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std::map<std::string, TToken>::iterator it;
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_TempToken.Token = ((it = _Keywords.find(get(_TempToken))) != _Keywords.end() ? (*it).second : TokenIdentifier);
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}
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else if (isdigit(parse))
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{
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// number
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while (!posAtEnd() && isdigit(getChar()))
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popChar();
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_TempToken.Token = TokenNumber;
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}
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else if (parse == '"')
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{
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// string
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do
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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if (parse == '"')
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break;
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if (parse == '\\')
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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}
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}
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while (true);
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_TempToken.Token = TokenString;
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return CToken(_TempToken.Start+1, _TempToken.End-1, _TempToken.Token, this);
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}
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else if (parse == '@')
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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if (parse == '[')
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{
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// user code
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do
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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if (parse == ']')
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{
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if (posAtEnd())
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error(_TempToken);
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if (popChar() == '@')
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break;
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else
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pushChar();
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}
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}
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while (true);
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uint startTrim = _TempToken.Start+2;
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uint endTrim = _TempToken.End-2;
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while (startTrim < endTrim && (isspace(_Buffer[startTrim]) || _Buffer[startTrim] == '\r'))
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++startTrim;
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while (startTrim < endTrim && (isspace(_Buffer[endTrim-1]) || _Buffer[endTrim-1] == '\r'))
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--endTrim;
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_TempToken.Token = TokenCppCode;
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return CToken(startTrim, endTrim, _TempToken.Token, this);
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}
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else if (parse == '/')
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{
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// description
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do
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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if (parse == '/')
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{
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if (posAtEnd())
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error(_TempToken);
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if (popChar() == '@')
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break;
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else
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pushChar();
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}
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}
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while (true);
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uint startTrim = _TempToken.Start+2;
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uint endTrim = _TempToken.End-2;
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while (startTrim < endTrim && (isspace(_Buffer[startTrim]) || _Buffer[startTrim] == '\r'))
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++startTrim;
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while (startTrim < endTrim && (isspace(_Buffer[endTrim-1]) || _Buffer[endTrim-1] == '\r'))
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--endTrim;
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_TempToken.Token = TokenDescription;
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return CToken(startTrim, endTrim, _TempToken.Token, this);
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}
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else
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{
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error(_TempToken);
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}
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}
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else if (parse == '/')
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{
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_TempToken.Token = TokenSlash;
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if (!posAtEnd())
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{
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parse = popChar();
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if (parse == '/')
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{
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// skip to end of line
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while (!posAtEnd() && (parse = popChar()) != '\n' && parse != '\r')
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;
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return nextToken();
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}
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else if (parse == '*')
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{
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// skip to comment close
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while (true)
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{
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if (posAtEnd())
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error(_TempToken);
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parse = popChar();
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if (parse == '*')
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{
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if (posAtEnd())
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error(_TempToken);
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if (popChar() == '/')
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break;
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else
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|
pushChar();
|
|
}
|
|
}
|
|
return nextToken();
|
|
}
|
|
else
|
|
{
|
|
pushChar();
|
|
}
|
|
}
|
|
}
|
|
else if (parse == ':')
|
|
{
|
|
if (posAtEnd())
|
|
_TempToken.Token = TokenColon;
|
|
else
|
|
{
|
|
parse = popChar();
|
|
if (parse == ':')
|
|
{
|
|
_TempToken.Token = TokenRefineScope;
|
|
}
|
|
else
|
|
{
|
|
pushChar();
|
|
_TempToken.Token = TokenColon;
|
|
}
|
|
}
|
|
}
|
|
else if (getOLToken(parse) != TokenUnknown)
|
|
_TempToken.Token = getOLToken(parse);
|
|
|
|
if (_TempToken.Token == TokenUnknown)
|
|
error(_TempToken);
|
|
|
|
return _TempToken;
|
|
}
|
|
|
|
|
|
bool posAtEnd() const
|
|
{
|
|
return _TempToken.End >= _Size;
|
|
}
|
|
|
|
/// reset the buffer
|
|
void reset()
|
|
{
|
|
_TempToken.End = 0;
|
|
}
|
|
|
|
/// skip spaces
|
|
void skipSpaces()
|
|
{
|
|
while (!posAtEnd() && isspace(_Buffer[_TempToken.End]))
|
|
++(_TempToken.End);
|
|
}
|
|
|
|
/// pop char
|
|
char popChar()
|
|
{
|
|
nlassert(!posAtEnd());
|
|
return _Buffer[(_TempToken.End)++];
|
|
}
|
|
|
|
/// get char
|
|
char getChar()
|
|
{
|
|
nlassert(!posAtEnd());
|
|
return _Buffer[_TempToken.End];
|
|
}
|
|
|
|
/// push char
|
|
void pushChar()
|
|
{
|
|
nlassert(_TempToken.End > 0);
|
|
--(_TempToken.End);
|
|
}
|
|
|
|
/// init one letter tokens
|
|
void initOneLetterTokens()
|
|
{
|
|
uint i;
|
|
for (i=0; i<256; ++i)
|
|
_OneLetterTokens[i] = TokenUnknown;
|
|
|
|
setOLToken('{', TokenOpenBrace);
|
|
setOLToken('}', TokenCloseBrace);
|
|
setOLToken('(', TokenOpenParenthesis);
|
|
setOLToken(')', TokenCloseParenthesis);
|
|
setOLToken('[', TokenOpenBracket);
|
|
setOLToken(']', TokenCloseBracket);
|
|
setOLToken('<', TokenLessThan);
|
|
setOLToken('>', TokenGreaterThan);
|
|
setOLToken('=', TokenEqual);
|
|
setOLToken(',', TokenComma);
|
|
setOLToken('.', TokenDot);
|
|
setOLToken(':', TokenColon);
|
|
setOLToken(';', TokenSemiColon);
|
|
setOLToken('-', TokenMinus);
|
|
setOLToken('+', TokenPlus);
|
|
setOLToken('*', TokenTimes);
|
|
setOLToken('\\', TokenAntiSlash);
|
|
setOLToken('%', TokenMod);
|
|
setOLToken('#', TokenSharp);
|
|
setOLToken('&', TokenAnd);
|
|
setOLToken('|', TokenOr);
|
|
setOLToken('^', TokenCirc);
|
|
setOLToken('?', TokenInterrog);
|
|
setOLToken('!', TokenExclam);
|
|
}
|
|
|
|
/// set one letter token
|
|
void setOLToken(char c, TToken token)
|
|
{
|
|
_OneLetterTokens[(uint)c] = token;
|
|
}
|
|
|
|
/// set one letter token
|
|
TToken getOLToken(char c) const
|
|
{
|
|
return _OneLetterTokens[(uint)c];
|
|
}
|
|
|
|
/// init keywords
|
|
void initKeywords()
|
|
{
|
|
_Keywords.clear();
|
|
|
|
_Keywords["verbatim"] = TokenIncludeScript;
|
|
|
|
_Keywords["class"] = TokenClass;
|
|
_Keywords["enum"] = TokenEnum;
|
|
_Keywords["dimension"] = TokenDimension;
|
|
_Keywords["parent"] = TokenParent;
|
|
_Keywords["flag"] = TokenFlag;
|
|
_Keywords["file"] = TokenFile;
|
|
_Keywords["db"] = TokenDb;
|
|
_Keywords["type"] = TokenType;
|
|
_Keywords["key"] = TokenKey;
|
|
_Keywords["hidden"] = TokenHidden;
|
|
_Keywords["extern"] = TokenExtern;
|
|
_Keywords["mirrored"] = TokenMirrored;
|
|
_Keywords["implements"] = TokenImplements;
|
|
_Keywords["mapped"] = TokenMapped;
|
|
_Keywords["derived"] = TokenDerived;
|
|
_Keywords["initfill"] = TokenInitFill;
|
|
_Keywords["logmsg"] = TokenLogMsg;
|
|
_Keywords["logcontext"] = TokenLogContext;
|
|
_Keywords["reserve"] = TokenReserve;
|
|
_Keywords["include"] = TokenInclude;
|
|
_Keywords["usepch"] = TokenUsePch;
|
|
_Keywords["writetriggered"] = TokenWriteTrigger;
|
|
_Keywords["separated"] = TokenSeparated;
|
|
}
|
|
};
|
|
|
|
|
|
#endif
|