Initial import.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
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bbahnsen
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Tools/Source/TianoTools/Pccts/h/DLexerBase.h
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Tools/Source/TianoTools/Pccts/h/DLexerBase.h
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/* DLGLexerBase.h
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*
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* SOFTWARE RIGHTS
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*
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* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
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* Set (PCCTS) -- PCCTS is in the public domain. An individual or
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* company may do whatever they wish with source code distributed with
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* PCCTS or the code generated by PCCTS, including the incorporation of
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* PCCTS, or its output, into commerical software.
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*
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* We encourage users to develop software with PCCTS. However, we do ask
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* that credit is given to us for developing PCCTS. By "credit",
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* we mean that if you incorporate our source code into one of your
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* programs (commercial product, research project, or otherwise) that you
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* acknowledge this fact somewhere in the documentation, research report,
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* etc... If you like PCCTS and have developed a nice tool with the
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* output, please mention that you developed it using PCCTS. In
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* addition, we ask that this header remain intact in our source code.
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* As long as these guidelines are kept, we expect to continue enhancing
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* this system and expect to make other tools available as they are
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* completed.
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*
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* ANTLR 1.33
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* Terence Parr
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* Parr Research Corporation
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* with Purdue University and AHPCRC, University of Minnesota
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* 1989-2000
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*/
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#ifndef DLGX_H
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#define DLGX_H
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#include "pcctscfg.h"
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#include "pccts_stdio.h"
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PCCTS_NAMESPACE_STD
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#include ATOKEN_H
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#include ATOKENSTREAM_H
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class ANTLRParser; // MR1
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/* must define what a char looks like; can make this a class too */
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typedef char DLGChar;
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/* Can have it as a class too: (ack this looks weird; is it right?)
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class DllExportPCCTS DLGChar {
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private:
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int c;
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public:
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DLGChar(int ch) { c = ch; }
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int atom() { return c; }
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};
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*/
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/* user must subclass this */
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class DllExportPCCTS DLGInputStream {
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public:
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virtual int nextChar() = 0;
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};
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/* Predefined char stream: Input from FILE */
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class DllExportPCCTS DLGFileInput : public DLGInputStream {
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private:
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int found_eof;
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FILE *input;
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public:
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DLGFileInput(FILE *f) { input = f; found_eof = 0; }
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int nextChar() {
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int c;
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if ( found_eof ) return EOF;
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else {
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c=getc(input);
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if ( c==EOF ) found_eof = 1;
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return c;
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}
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}
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void DLGFileReset(FILE *f) {input=f; found_eof = 0; }; // MR11
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};
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// MR9 Suggested by Bruce Guenter (bruceg@qcc.sk.ca)
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// MR9 Make DLGStringInput const correct
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/* Predefined char stream: Input from string */
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class DllExportPCCTS DLGStringInput : public DLGInputStream {
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private:
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const DLGChar *input; // MR9
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const DLGChar *p; // MR9
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public:
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DLGStringInput(const DLGChar *s) { input = s; p = &input[0];} // MR9
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int nextChar()
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{
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if (*p) return (int) (unsigned char) *p++; // MR14
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else return EOF;
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}
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void DLGStringReset(const DLGChar *s) {input=s; p= &input[0]; }; // MR11 // MR16
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};
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class DllExportPCCTS DLGState {
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public:
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DLGInputStream *input;
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int interactive;
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int track_columns;
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int auto_num;
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int add_erase;
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int lookc;
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int char_full;
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int begcol, endcol;
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int line;
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DLGChar *lextext, *begexpr, *endexpr;
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int bufsize;
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int bufovf;
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DLGChar *nextpos;
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int class_num;
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int debugLexerFlag; // MR1
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ANTLRParser *parser; // MR1
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};
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/* user must subclass this */
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class DllExportPCCTS DLGLexerBase : public ANTLRTokenStream {
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public:
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virtual ANTLRTokenType erraction();
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protected:
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DLGInputStream *input;
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int interactive;
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int track_columns;
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DLGChar *_lextext; /* text of most recently matched token */
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DLGChar *_begexpr; /* beginning of last reg expr recogn. */
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DLGChar *_endexpr; /* beginning of last reg expr recogn. */
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int _bufsize; /* number of characters in lextext */
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int _begcol; /* column that first character of token is in*/
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int _endcol; /* column that last character of token is in */
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int _line; /* line current token is on */
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int ch; /* character to determine next state */
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int bufovf; /* indicates that buffer too small for text */
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int charfull;
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DLGChar *nextpos; /* points to next available position in lextext*/
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int cl;
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int automaton;
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int add_erase;
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DLGChar ebuf[70];
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_ANTLRTokenPtr token_to_fill;
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int debugLexerFlag; // MR1
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ANTLRParser *parser; // MR1
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public:
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virtual _ANTLRTokenPtr getToken(); // MR12 public
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virtual void advance(void) = 0;
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void skip(void); /* erase lextext, look for antoher token */
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void more(void); /* keep lextext, look for another token */
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void mode(int k); /* switch to automaton 'k' */
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void saveState(DLGState *);
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void restoreState(DLGState *);
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virtual ANTLRTokenType nextTokenType(void)=0;/* get next token */
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void replchar(DLGChar c); /* replace last recognized reg. expr. with
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a character */
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void replstr(const DLGChar *s); /* replace last recognized reg. expr. with
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a string */ /* MR20 const */
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virtual int err_in(); // MR1
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virtual void errstd(const char *); // MR1 MR20 const
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int line() { return _line; }
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void set_line(int newValue) { _line=newValue; }; // MR1
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virtual void newline() { _line++; }
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DLGChar *lextext() { return _lextext; }
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int begcol() { return _begcol; }
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int endcol() { return _endcol; }
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void set_begcol(int a) { _begcol=a; }
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void set_endcol(int a) { _endcol=a; }
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DLGChar *begexpr() { return _begexpr; }
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DLGChar *endexpr() { return _endexpr; }
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int bufsize() { return _bufsize; }
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void setToken(ANTLRAbstractToken *t) { token_to_fill = t; }
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void setInputStream(DLGInputStream *);
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DLGLexerBase(DLGInputStream *in,
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unsigned bufsize=2000,
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int interactive=0,
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int track_columns=0);
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void reset(); // MR19
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virtual ~DLGLexerBase() { delete [] _lextext; }
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virtual void panic(const char *msg); // MR1 MR20 const
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void trackColumns() {
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track_columns = 1;
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this->_begcol = 0;
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this->_endcol = 0;
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};
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virtual ANTLRParser *setParser(ANTLRParser *p); // MR1
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virtual ANTLRParser *getParser(); // MR1
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virtual int debugLexer(int value); // MR1
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int lexErrCount; // MR12
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virtual int printMessage(FILE* pFile, const char* pFormat, ...); // MR23
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};
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#endif
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