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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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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 General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (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 General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __LSCPPARSER_H__ |
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#define __LSCPPARSER_H__ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <stdlib.h> |
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#include <iostream> |
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#include <sstream> |
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#include <string> |
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#include "../common/global.h" |
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#include "../Sampler.h" |
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/// Will be returned by the parser in case of syntax errors. |
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#define LSCP_SYNTAX_ERROR -69 |
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using namespace LinuxSampler; |
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/** |
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* How the fill states of disk stream buffers should be reflected. |
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*/ |
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enum fill_response_t { |
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fill_response_bytes, ///< The returned values are meant in bytes. |
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fill_response_percentage ///< The returned values are meant in percentage. |
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}; |
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/** |
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* Event types |
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*/ |
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enum event_t { |
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event_channels, |
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event_voice_count, |
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event_stream_count, |
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event_channel_buffer_fill, |
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event_channel_info, |
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event_misc |
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}; |
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/** |
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* Semantic value of the lookahead symbol. |
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* |
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* Structure that is used by the parser to process and return values from the |
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* input text. The lexical analyzer for example returns a number for |
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* recognized number strings in the input text and the parser might return a |
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* value for each of it's rules. |
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*/ |
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struct YYSTYPE { |
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union { |
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char Char; |
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unsigned int Number; |
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double Dotnum; |
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fill_response_t FillResponse; |
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event_t Event; |
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}; |
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std::string String; |
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std::map<std::string,std::string> KeyValList; |
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}; |
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#define yystype YYSTYPE ///< For backward compatibility. |
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#define YYSTYPE_IS_DECLARED ///< We tell the lexer / parser that we use our own data structure as defined above. |
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// just symbol prototyping |
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class LSCPServer; |
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// pointer to an (reentrant) scanner / lexical analyzer |
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typedef void* yyscan_t; |
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/** |
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* Parameters given to the parser on every yyparse() call. |
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*/ |
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struct yyparse_param_t { |
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LSCPServer* pServer; |
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yyscan_t pScanner; |
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}; |
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#define YYPARSE_PARAM yyparse_param |
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/** |
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* Prototype of the main scanner function (lexical analyzer). |
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*/ |
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#define YY_DECL int yylex(YYSTYPE* yylval, yyscan_t yyscanner) |
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/** |
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* Override lex's input function which just reads from stdin by default. |
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* We read from a socket instead. |
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*/ |
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#define YY_INPUT(buf,result,max_size) \ |
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errno=0; \ |
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while ( (result = recv(hSession, buf, max_size, 0)) < 0 ) \ |
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{ \ |
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if(errno != EINTR) \ |
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{ \ |
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switch(errno) { \ |
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case EBADF: \ |
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dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n")); \ |
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break; \ |
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case ECONNREFUSED: \ |
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dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n")); \ |
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break; \ |
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case ENOTCONN: \ |
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dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n")); \ |
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break; \ |
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case ENOTSOCK: \ |
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dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n")); \ |
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break; \ |
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case EAGAIN: \ |
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dmsg(2,("LSCPScanner: The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.\n")); \ |
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break; \ |
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case EINTR: \ |
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dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n")); \ |
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break; \ |
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case EFAULT: \ |
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dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n")); \ |
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break; \ |
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case EINVAL: \ |
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dmsg(2,("LSCPScanner: Invalid argument passed.\n")); \ |
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break; \ |
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case ENOMEM: \ |
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dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n")); \ |
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break; \ |
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default: \ |
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dmsg(2,("LSCPScanner: Unknown recv() error.\n")); \ |
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break; \ |
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} \ |
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YY_FATAL_ERROR( "input in flex scanner failed" ); \ |
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break; \ |
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} \ |
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errno=0; \ |
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clearerr(yyin); \ |
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}\ |
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#endif // __LSCPPARSER_H__ |