/*****************************************************************************
-** Name: pol.h
+** Name: pol.h
** Purpose: Header file for Problem Oriented Language Class
-** Programmer: Kevin Rosenberg
-** Date Started: 1984
+** Programmer: Kevin Rosenberg
+** Date Started: 1984
**
** This is part of the CTSim program
** Copyright (c) 1983-2001 Kevin Rosenberg
#include <stack>
class POL {
-
+
public:
-
- // codes for pol_usefile
+
+ // codes for pol_usefile
enum {
- P_USE_STR = 1, // use string as input source
- P_USE_FILE, // use file as input source
+ P_USE_STR = 1, // use string as input source
+ P_USE_FILE, // use file as input source
};
-
+
POL();
~POL();
-
+
void init ();
void addSkipWord (const char* const w);
void addSkipChar (int c);
void ungetch (int c);
int get_inputline (FILE *fp);
void set_inputline (const char* const line);
-
+
enum {
- MAXTOK = 200, // maximum length of a token
+ MAXTOK = 200, // maximum length of a token
MAXLINE = 1024, // maximum line length
MAXIDENT = 20,
MAXSKIPWORD = 20,
MIN_INT = -2000000000,
MAX_INT = 2000000000,
};
-
- // token types
+
+ // 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_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
+ 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
};
-
+
private:
-
- // codes for pol_int and pol_float
- // if in reject catagory, get new number from terminal
+
+ // 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
+ 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
- // std::string tokstr; // token string
+ int ready; // TRUE if token is ready
+ // 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
+ 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 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 */
+ 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
+
+ // Internal codes for pol commands
enum {
PC_EOC = 1,
PC_STR,
PC_COM,
PC_CMD,
PC_PRG,
- PC_CON,
+ PC_CON,
PC_OUT,
PC_TER,
- PC_INB,
+ PC_INB,
PC_NL_EOC,
PC_NL_NEOC,
PC_TRON,
PC_FILE,
PC_DUMP,
};
-
+
enum {
INPUT_STREAM = 1,
INPUT_FILE,
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 */
-
+
+ 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;
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 eatline ();
int type (int c);
int getch (FILE *fp);
-
+
};
#endif
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