+++ /dev/null
-/* DLGLexerBase.c\r
- *\r
- * SOFTWARE RIGHTS\r
- *\r
- * We reserve no LEGAL rights to the Purdue Compiler Construction Tool\r
- * Set (PCCTS) -- PCCTS is in the public domain. An individual or\r
- * company may do whatever they wish with source code distributed with\r
- * PCCTS or the code generated by PCCTS, including the incorporation of\r
- * PCCTS, or its output, into commerical software.\r
- *\r
- * We encourage users to develop software with PCCTS. However, we do ask\r
- * that credit is given to us for developing PCCTS. By "credit",\r
- * we mean that if you incorporate our source code into one of your\r
- * programs (commercial product, research project, or otherwise) that you\r
- * acknowledge this fact somewhere in the documentation, research report,\r
- * etc... If you like PCCTS and have developed a nice tool with the\r
- * output, please mention that you developed it using PCCTS. In\r
- * addition, we ask that this header remain intact in our source code.\r
- * As long as these guidelines are kept, we expect to continue enhancing\r
- * this system and expect to make other tools available as they are\r
- * completed.\r
- *\r
- * ANTLR 1.33\r
- * Terence Parr\r
- * Parr Research Corporation\r
- * with Purdue University and AHPCRC, University of Minnesota\r
- * 1989-2000\r
- */\r
-\r
-#include "pcctscfg.h"\r
-\r
-#include "pccts_stdio.h"\r
-#include "pccts_stdlib.h"\r
-\r
-PCCTS_NAMESPACE_STD\r
-\r
-/* I have to put this here due to C++ limitation\r
- * that you can't have a 'forward' decl for enums.\r
- * I hate C++!!!!!!!!!!!!!!!\r
- */\r
-\r
-// MR1\r
-// MR1 10-Apr-97 133MR1 Prevent use of varying sizes for the\r
-// MR1 ANTLRTokenType enum\r
-// MR1\r
-\r
-enum ANTLRTokenType { TER_HATES_CPP=0, ITS_UTTER_GARBAGE, // MR1\r
- WITH_SOME_GOOD_IDEAS=9999}; // MR1\r
-\r
-#define ANTLR_SUPPORT_CODE\r
-\r
-#include "pcctscfg.h"\r
-#include DLEXERBASE_H\r
-#include APARSER_H // MR23\r
-\r
-DLGLexerBase::\r
-DLGLexerBase(DLGInputStream *in,\r
- unsigned bufsize,\r
- int _interactive,\r
- int _track_columns)\r
-{\r
- this->_bufsize = bufsize;\r
- this->_lextext = new DLGChar[_bufsize];\r
- if ( this->_lextext==NULL ) {\r
- panic("text buffer is NULL");\r
- }\r
- this->_begexpr = this->_endexpr = NULL;\r
- this->ch = this->bufovf = 0;\r
- this->nextpos = NULL;\r
- this->cl = 0;\r
- this->add_erase = 0;\r
- this->input = in;\r
- this->_begcol = 0;\r
- this->_endcol = 0;\r
- this->_line = 1;\r
- this->charfull = 0;\r
- this->automaton = 0;\r
- this->token_to_fill = NULL;\r
- this->interactive = _interactive;\r
- this->track_columns = _track_columns;\r
- this->debugLexerFlag = 0; // MR1\r
- this->parser = NULL; // MR1\r
- this->lexErrCount=0; // MR11\r
-}\r
-\r
-// MR19 THM \r
-\r
-void DLGLexerBase::reset()\r
-{\r
- this->charfull = 0;\r
- this->_begcol = 0;\r
- this->_endcol = 0;\r
- this->automaton = 0;\r
- this->_line=1;\r
- this->lexErrCount=0;\r
-}\r
-\r
-void DLGLexerBase::\r
-setInputStream( DLGInputStream *in )\r
-{\r
- this->input = in;\r
- _line = 1;\r
- charfull = 0;\r
-}\r
-\r
-/* saves dlg state, but not what feeds dlg (such as file position) */\r
-void DLGLexerBase::\r
-saveState(DLGState *state)\r
-{\r
- state->input = input;\r
- state->interactive = interactive;\r
- state->track_columns = track_columns;\r
- state->auto_num = automaton;\r
- state->add_erase = add_erase;\r
- state->lookc = ch;\r
- state->char_full = charfull;\r
- state->begcol = _begcol;\r
- state->endcol = _endcol;\r
- state->line = _line;\r
- state->lextext = _lextext;\r
- state->begexpr = _begexpr;\r
- state->endexpr = _endexpr;\r
- state->bufsize = _bufsize;\r
- state->bufovf = bufovf;\r
- state->nextpos = nextpos;\r
- state->class_num = cl;\r
- state->debugLexerFlag = debugLexerFlag; // MR1\r
- state->parser = parser; // MR1\r
-}\r
-\r
-void DLGLexerBase::\r
-restoreState(DLGState *state)\r
-{\r
- input = state->input;\r
- interactive = state->interactive;\r
- track_columns = state->track_columns;\r
- automaton = state->auto_num;\r
- add_erase = state->add_erase;\r
- ch = state->lookc;\r
- charfull = state->char_full;\r
- _begcol = state->begcol;\r
- _endcol = state->endcol;\r
- _line = state->line;\r
- _lextext = state->lextext;\r
- _begexpr = state->begexpr;\r
- _endexpr = state->endexpr;\r
- _bufsize = state->bufsize;\r
- bufovf = state->bufovf;\r
- nextpos = state->nextpos;\r
- cl = state->class_num;\r
- debugLexerFlag = state->debugLexerFlag; // MR1\r
- parser = state->parser; // MR1\r
-}\r
-\r
-/* erase what is currently in the buffer, and get a new reg. expr */\r
-void DLGLexerBase::\r
-skip()\r
-{\r
- add_erase = 1;\r
-}\r
-\r
-/* don't erase what is in the lextext buffer, add on to it */\r
-void DLGLexerBase::\r
-more()\r
-{\r
- add_erase = 2;\r
-}\r
-\r
-/* substitute c for the reg. expr last matched and is in the buffer */\r
-void DLGLexerBase::\r
-replchar(DLGChar c)\r
-{\r
- /* can't allow overwriting null at end of string */\r
- if (_begexpr < &_lextext[_bufsize-1]){\r
- *_begexpr = c;\r
- *(_begexpr+1) = '\0';\r
- }\r
- _endexpr = _begexpr;\r
- if (c != '\0') {\r
- nextpos = _begexpr + 1;\r
- }\r
- else {\r
- nextpos = _begexpr; /* MR30 Zero terminates string. */\r
- }\r
-}\r
-\r
-/* replace the string s for the reg. expr last matched and in the buffer */\r
-\r
-#ifdef _MSC_VER // MR23\r
-//Turn off "assignment within conditional expression" warning\r
-#pragma warning(disable : 4706)\r
-#endif\r
-void DLGLexerBase::\r
-replstr(const DLGChar *s) /* MR20 const */\r
-{\r
- register DLGChar *l= &_lextext[_bufsize -1];\r
-\r
- nextpos = _begexpr;\r
- if (s){\r
- while ((nextpos <= l) && (*(nextpos++) = *(s++))){\r
- /* empty */\r
- }\r
- /* correct for NULL at end of string */\r
- nextpos--;\r
- }\r
- if ((nextpos <= l) && (*(--s) == 0)){\r
- bufovf = 0;\r
- }else{\r
- bufovf = 1;\r
- }\r
- *(nextpos) = '\0';\r
- _endexpr = nextpos - 1;\r
-}\r
-#ifdef _MSC_VER // MR23\r
-#pragma warning(default: 4706)\r
-#endif\r
-\r
-void DLGLexerBase::\r
-errstd(const char *s) /* MR20 const */\r
-{\r
- lexErrCount++; /* MR11 */\r
- /* MR23 */ printMessage(stderr,\r
- "%s near line %d (text was '%s')\n",\r
- ((s == NULL) ? "Lexical error" : s),\r
- _line,_lextext);\r
-}\r
-\r
-int DLGLexerBase::\r
-err_in()\r
-{\r
- /* MR23 */ printMessage(stderr,"No input stream, function, or string\n");\r
- /* return eof to get out gracefully */\r
- return EOF;\r
-}\r
-\r
-ANTLRTokenType DLGLexerBase::\r
-erraction()\r
-{\r
- errstd("invalid token");\r
- advance();\r
- skip();\r
- return (ANTLRTokenType) 0; // bogus, but satisfies compiler\r
-}\r
-\r
-_ANTLRTokenPtr DLGLexerBase::\r
-getToken()\r
-{\r
- if ( token_to_fill==NULL ) panic("NULL token_to_fill");\r
- ANTLRTokenType tt = nextTokenType();\r
- _ANTLRTokenPtr tk = token_to_fill->makeToken(tt, _lextext,_line);\r
- return tk;\r
-}\r
-\r
-void DLGLexerBase::\r
-panic(const char *msg) /* MR20 const */\r
-{\r
- if (parser) //MR23\r
- parser->panic(msg); //MR23\r
- else //MR23\r
- {\r
- /* MR23 */ printMessage(stderr, "DLG panic: %s\n", msg);\r
- //\r
- // 7-Apr-97 133MR1\r
- //\r
- exit(PCCTS_EXIT_FAILURE); // MR1\r
- }\r
-}\r
-\r
-ANTLRParser * DLGLexerBase:: // MR1\r
-setParser(ANTLRParser *p) { // MR1\r
- ANTLRParser *oldValue=parser; // MR1\r
- parser=p; // MR1\r
- return oldValue; // MR1\r
-} // MR1\r
- // MR1\r
-ANTLRParser * DLGLexerBase:: // MR1\r
-getParser() { // MR1\r
- return parser; // MR1\r
-} // MR1\r
- // MR1\r
-int DLGLexerBase:: // MR1\r
-debugLexer(int newValue) { // MR1\r
- int oldValue=debugLexerFlag; // MR1\r
- debugLexerFlag=newValue; // MR1\r
- return oldValue; // MR1\r
-} // MR1\r
-\r
-//MR23\r
-int DLGLexerBase::printMessage(FILE* pFile, const char* pFormat, ...)\r
-{\r
- va_list marker;\r
- va_start( marker, pFormat );\r
-\r
- int iRet = 0;\r
- if (parser)\r
- parser->printMessageV(pFile, pFormat, marker);\r
- else\r
- iRet = vfprintf(pFile, pFormat, marker);\r
-\r
- va_end( marker );\r
- return iRet;\r
-}\r
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