main.cpp File Reference

#include "parse.hpp"
#include "eval.hpp"
#include <sstream>

Functions
void	parse_eval_print (string sexpr)
	Parse and evaluate the s-expression, and print the result.
void	readsinglesymbol (ifstream &fin, string &str)
	Read single single symbol into the end of a string buffer.
void	readfile (ifstream &fin)
	Read, parse, evaluate, and print the expression one by one from the input stream.
void	readfile (char *fn)
	Read the expressions from the file.
void	readconsole ()
	Read, parse, evaluate, and print the expression one by one from the standard input, interactively.
int	main (int argc, char *argv[])
	Call either the batch or interactive main drivers.

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Detailed Description

Driver code implementing the main read-parse-eval-print loop. Supports both (1) an interactive mode, and (2) a batch mode where input expressions are read from the file specified by the first command-line argument.

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Function Documentation

int main (  int  argc, char *  argv[] )

Call either the batch or interactive main drivers.

void parse_eval_print (  string  sexpr  )

Parse and evaluate the s-expression, and print the result. Parameters: sexpr  The string vaule holding the s-expression.

void readconsole (   )

Read, parse, evaluate, and print the expression one by one from the standard input, interactively.

void readfile (  char *  fn  )

Read the expressions from the file. Parameters: fn  The file name.

void readfile (  ifstream &  fin  )

Read, parse, evaluate, and print the expression one by one from the input stream. Parameters: fin  The input file stream.

void readsinglesymbol (  ifstream &  fin, string &  str )

Read single single symbol into the end of a string buffer. Parameters: fin  The input file stream. str  The string buffer.

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