/*****************************************************************************
+** Name: pol.h
+** Purpose: Header file for Problem Oriented Language Class
+** Programmer: Kevin Rosenberg
+** Date Started: 1984
+**
** This is part of the CTSim program
-** Copyright (C) 1983-2000 Kevin Rosenberg
+** Copyright (c) 1983-2001 Kevin Rosenberg
**
-** $Id: pol.h,v 1.6 2000/12/25 21:54:26 kevin Exp $
+** $Id$
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
******************************************************************************/
#ifndef __H_POL
#define __H_POL
-\r
-
-// codes for pol_usefile
-enum {\r
- P_USE_STR = 1, // use string as input source
- P_USE_FILE, // use file as input source \r
-};
-
-// codes for pol_int and pol_float
-// if in reject catagory, get new number from terminal
-enum {
- P_FLTINT = 1, // get a real or integer number
- P_BFLTINT, // get a real or integer number, clip against bounds
- P_CBFLTINT, // get real or int, reject if outside bounds
- P_FLT, // get a real number
- P_BFLT, // get a real, clip against bounds
- P_CBFLT, // get a floating, reject if outside bounds
- P_INT, // get a integer number
- P_BINT, // get a integer, clip against bounds
- P_CBINT, // get a integer, reject if outside bounds
-};\r
-\r
-
-#define LETTER 'a'
-#define DIGIT '0'
-#define MAXTOK 200 /* maximum length of a token */
-#define MAXLINE 255
-#define MAXIDENT 20
-#define MAXSKIPWORD 20
-#define MAXSKIPCHAR 20
+#include "hashtable.h"
+#include <stack>
-#define MIN_INT -32768
-#define MAX_INT 32767
-\r
+class POL {
+
+ public:
+
+ // codes for pol_usefile
+ enum {
+ P_USE_STR = 1, // use string as input source
+ P_USE_FILE, // use file as input source
+ };
-// token types
-enum {
- TT_STRING = 1, // string token
- TT_INT, // integer token
- TT_REAL, // floating point token
- TT_ALPHA, // alphabetic token
- TT_ALPNUM, // alphanumeric token
- TT_NUMALPHA,
- TT_SPECLCHAR,
- TT_EOF, // end of file reached
- TT_ERROR, // error in token, caused by call to wrong type of token reader
- TT_BLANK, // white space token. pol_tok() skips these
- TT_USERTOK, // user defined token
-};\r
-\r
+
+ POL();
+ ~POL();
+
+ void init ();
+ void addSkipWord (const char* const w);
+ void addSkipChar (int c);
+ void addKeyword (const char* const str, int code);
+ bool readWord (char *search, int nlet);
+ bool readUserToken (char *str, int *code);
+ bool readString (char *str);
+ bool readInteger (int *n, int typecode, bool boundcode, int bb1, int bb2);
+ bool readFloat (double *n, double typecode, bool boundcode, double bb1, double bb2);
+ bool skipTokens ();
+ void reader ();
+ bool readText (char *str, int lim);
+ void usefile (int source, char *fn);
+ void closefile ();
+ int lookchar ();
+ int inchar ();
+ void ungetch (int c);
+ int get_inputline (FILE *fp);
+ void set_inputline (const char* const line);
+
-struct symlist {
- char *name;
- int code;
- struct symlist *next;
-};
-
-typedef struct symlist SYMBOL;
+ enum {
+ MAXTOK = 200, // maximum length of a token
+ MAXLINE = 1024, // maximum line length
+ MAXIDENT = 20,
+ MAXSKIPWORD = 20,
+ MAXSKIPCHAR = 20,
+ MIN_INT = -2000000000,
+ MAX_INT = 2000000000,
+ };
+
+ // token types
+ enum {
+ TT_STRING = 1, // string token
+ TT_INT, // integer token
+ TT_REAL, // floating point token
+ TT_ALPHA, // alphabetic token
+ TT_ALPNUM, // alphanumeric token
+ TT_NUMALPHA,
+ TT_SPECLCHAR,
+ TT_EOF, // end of file reached
+ TT_ERROR, // error in token, caused by call to wrong type of token reader
+ TT_BLANK, // white space token. pol_tok() skips these
+ TT_USERTOK, // user defined token
+ };
-struct token_st {
+
+private:
+
+ // codes for pol_int and pol_float
+ // if in reject catagory, get new number from terminal
+ enum {
+ P_FLTINT = 1, // get a real or integer number
+ P_BFLTINT, // get a real or integer number, clip against bounds
+ P_CBFLTINT, // get real or int, reject if outside bounds
+ P_FLT, // get a real number
+ P_BFLT, // get a real, clip against bounds
+ P_CBFLT, // get a floating, reject if outside bounds
+ P_INT, // get a integer number
+ P_BINT, // get a integer, clip against bounds
+ P_CBINT, // get a integer, reject if outside bounds
+ };
+
+#define LETTER 'a'
+#define DIGIT '0'
+
+
+// typedef std::map<std::string,int> KeywordCodeList;
+
+ struct token_st {
int ready; // TRUE if token is ready
- char tokstr[MAXTOK+1]; // token string
+ // std::string tokstr; // token string
+ char tokstr[MAXTOK+1];
int type; // type of token 'TT_'
int code; // holds code for user defined tokens
double fnum; // real value of token
int inum; // integer value of token
-};
+ };
+ typedef struct token_st TOKEN;
+ struct token_st token; // current token
+
+ // Tables words stored with install() & found with lookup()
+ KeywordCodeHashTable skiptable; // words to ignore and skip
+ KeywordCodeHashTable cmdtable; // pol parameter commands
+ KeywordCodeHashTable usertable; // user defined symbols
+
+ struct metachar {
+ char eoc; /* end of command character */
+ char str; /* string delimiter */
+ char com; /* comment character */
+ char cmd; /* pol parameter command character */
+ char prg; /* program load character */
+ char con; /* continuation across newline character */
+ char out; /* character that delimits output to terminal */
+ char ter; /* character indicates insertion of input from terminal */
+ char inb; /* input from graphics device */
+ } meta;
+
+
+ char m_szSkipChars [MAXSKIPCHAR]; // characters to skip
+ bool m_bTrace;
+ bool m_bNewlineIsEOC;
+
+ struct KeywordCodeList {
+ char *keyword;
+ int code;
+ };
+
+ static const struct KeywordCodeList cmdlist[];
+ static const unsigned int NUMCMD;
+
+ // Internal codes for pol commands
+ enum {
+ PC_EOC = 1,
+ PC_STR,
+ PC_COM,
+ PC_CMD,
+ PC_PRG,
+ PC_CON,
+ PC_OUT,
+ PC_TER,
+ PC_INB,
+ PC_NL_EOC,
+ PC_NL_NEOC,
+ PC_TRON,
+ PC_TROFF,
+ PC_FILE,
+ PC_DUMP,
+ };
+
+ enum {
+ INPUT_STREAM = 1,
+ INPUT_FILE,
+ INPUT_STRING,
+ };
+
+ int m_iInputType;
+ std::istream* m_pInputStream;
+ FILE* m_pInputFile;
+ char* m_pszInputString;
-typedef struct token_st TOKEN;
+ enum {
+ MAXFILE = 8,
+ };
+
+ int currentf; /* pointer to current fp */
+ FILE *filep[MAXFILE]; /* == NULL for string input */
+ char *fname[MAXFILE]; /* pointer to filename */
+
+ char inputline[MAXLINE]; /* current input line */
+ int lineptr; /* current position in inputline */
+
+ std::stack<int> m_stackPushBackInput;
-\r
-/* pol.c */
-void pol_init (void);
-void pol_skpword (char *w);
-void pol_skpchar (char *s);
-int pol_install (char *str, int code);
-int pol_word (char *search, int nlet);
-int pol_usertok (char *str, int *code);
-int pol_string (char *str);
-int pol_integer (int *n, int typecode, int boundcode, int bb1, int bb2);
-int pol_float (double *n, double typecode, double boundcode, double bb1, double bb2);
-int pol_skip (void);
-void pol_reader (void);
-void gettext (char *str, int lim);
-void pol_usefile (int source, char *fn);
-void pol_closefile (void);
-int pol_lookchar (void);
-int pol_inchar (void);
-void pol_ungetch (int c);
-int get_inputline (FILE *fp);
-void set_inputline (const char* const line);
+ bool skipSingleToken (char term[]);
+ int tok (struct token_st *token);
+ void dumptok (struct token_st *token);
+
+
+ int getpol_tok (struct token_st *token);
+ int getcmd ();
+ int gettok (TOKEN *tok);
+ void getblank (char *s, int toksiz);
+ int getalpha (char *s, int toksiz);
+ void getquote (char *qs, int toksiz);
+ void getescape (char *s, int delim, int toksiz);
+ int getnumber (char str[], int strsize, double *fnum, int *inum);
+ void eatline ();
+ int type (int c);
+ int getch (FILE *fp);
+
+};
-#endif\r
+#endif
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