+++ /dev/null
-/* DLGLexerBase.h\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
- * 1989-1998\r
- */\r
-\r
-#ifndef DLGX_H\r
-#define DLGX_H\r
-\r
-#include "pcctscfg.h"\r
-#include "pccts_stdio.h"\r
-\r
-PCCTS_NAMESPACE_STD\r
-\r
-#include ATOKEN_H\r
-#include ATOKENSTREAM_H\r
-\r
-class ANTLRParser; // MR1\r
-\r
-/* must define what a char looks like; can make this a class too */\r
-typedef char DLGChar;\r
-\r
-/* Can have it as a class too: (ack this looks weird; is it right?)\r
-class DllExportPCCTS DLGChar {\r
-private:\r
- int c;\r
-public:\r
- DLGChar(int ch) { c = ch; }\r
- int atom() { return c; }\r
-};\r
-*/\r
-\r
-/* user must subclass this */\r
-class DllExportPCCTS DLGInputStream {\r
-public:\r
- virtual int nextChar() = 0;\r
-};\r
-\r
-/* Predefined char stream: Input from FILE */\r
-class DllExportPCCTS DLGFileInput : public DLGInputStream {\r
-private:\r
- int found_eof;\r
- FILE *input;\r
-public:\r
- DLGFileInput(FILE *f) { input = f; found_eof = 0; }\r
- int nextChar() {\r
- int c;\r
- if ( found_eof ) return EOF;\r
- else {\r
- c=getc(input);\r
- if ( c==EOF ) found_eof = 1;\r
- return c;\r
- }\r
- }\r
- void DLGFileReset(FILE *f) {input=f; found_eof = 0; }; // MR11\r
-};\r
-\r
-// MR9 Suggested by Bruce Guenter (bruceg@qcc.sk.ca)\r
-// MR9 Make DLGStringInput const correct\r
-\r
-/* Predefined char stream: Input from string */\r
-class DllExportPCCTS DLGStringInput : public DLGInputStream {\r
-private:\r
- const DLGChar *input; // MR9\r
- const DLGChar *p; // MR9\r
-public:\r
- DLGStringInput(const DLGChar *s) { input = s; p = &input[0];} // MR9\r
- int nextChar()\r
- {\r
- if (*p) return (int) (unsigned char) *p++; // MR14\r
- else return EOF;\r
- }\r
-\r
- void DLGStringReset(const DLGChar *s) {input=s; p= &input[0]; }; // MR11 // MR16\r
-};\r
-\r
-class DllExportPCCTS DLGState {\r
-public:\r
- DLGInputStream *input;\r
- int interactive;\r
- int track_columns;\r
- int auto_num;\r
- int add_erase;\r
- int lookc;\r
- int char_full;\r
- int begcol, endcol;\r
- int line;\r
- DLGChar *lextext, *begexpr, *endexpr;\r
- int bufsize;\r
- int bufovf;\r
- DLGChar *nextpos;\r
- int class_num;\r
- int debugLexerFlag; // MR1\r
- ANTLRParser *parser; // MR1\r
-};\r
-\r
-/* user must subclass this */\r
-class DllExportPCCTS DLGLexerBase : public ANTLRTokenStream {\r
-public:\r
- virtual ANTLRTokenType erraction();\r
-\r
-protected:\r
- DLGInputStream *input;\r
- int interactive;\r
- int track_columns;\r
- DLGChar *_lextext; /* text of most recently matched token */\r
- DLGChar *_begexpr; /* beginning of last reg expr recogn. */\r
- DLGChar *_endexpr; /* beginning of last reg expr recogn. */\r
- int _bufsize; /* number of characters in lextext */\r
- int _begcol; /* column that first character of token is in*/\r
- int _endcol; /* column that last character of token is in */\r
- int _line; /* line current token is on */\r
- int ch; /* character to determine next state */\r
- int bufovf; /* indicates that buffer too small for text */\r
- int charfull;\r
- DLGChar *nextpos; /* points to next available position in lextext*/\r
- int cl;\r
- int automaton;\r
- int add_erase;\r
- DLGChar ebuf[70];\r
- _ANTLRTokenPtr token_to_fill;\r
-\r
- int debugLexerFlag; // MR1\r
- ANTLRParser *parser; // MR1\r
-public:\r
- virtual _ANTLRTokenPtr getToken(); // MR12 public\r
- virtual void advance(void) = 0;\r
- void skip(void); /* erase lextext, look for antoher token */\r
- void more(void); /* keep lextext, look for another token */\r
- void mode(int k); /* switch to automaton 'k' */\r
- void saveState(DLGState *);\r
- void restoreState(DLGState *);\r
- virtual ANTLRTokenType nextTokenType(void)=0;/* get next token */\r
- void replchar(DLGChar c); /* replace last recognized reg. expr. with\r
- a character */\r
- void replstr(const DLGChar *s); /* replace last recognized reg. expr. with\r
- a string */ /* MR20 const */\r
- virtual int err_in(); // MR1\r
- virtual void errstd(const char *); // MR1 MR20 const\r
- int line() { return _line; }\r
- void set_line(int newValue) { _line=newValue; }; // MR1\r
- virtual void newline() { _line++; }\r
- DLGChar *lextext() { return _lextext; }\r
-\r
- int begcol() { return _begcol; }\r
- int endcol() { return _endcol; }\r
- void set_begcol(int a) { _begcol=a; }\r
- void set_endcol(int a) { _endcol=a; }\r
- DLGChar *begexpr() { return _begexpr; }\r
- DLGChar *endexpr() { return _endexpr; }\r
- int bufsize() { return _bufsize; }\r
-\r
- void setToken(ANTLRAbstractToken *t) { token_to_fill = t; }\r
-\r
- void setInputStream(DLGInputStream *);\r
- DLGLexerBase(DLGInputStream *in,\r
- unsigned bufsize=2000,\r
- int interactive=0,\r
- int track_columns=0);\r
- void reset(); // MR19\r
- virtual ~DLGLexerBase() { delete [] _lextext; }\r
- virtual void panic(const char *msg); // MR1 MR20 const\r
- void trackColumns() {\r
- track_columns = 1;\r
- this->_begcol = 0;\r
- this->_endcol = 0;\r
- };\r
- virtual ANTLRParser *setParser(ANTLRParser *p); // MR1\r
- virtual ANTLRParser *getParser(); // MR1\r
- virtual int debugLexer(int value); // MR1\r
- int lexErrCount; // MR12\r
-};\r
-\r
-#endif\r
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