/trunk/Lib/guile/interpreter.i
Swig | 59 lines | 37 code | 11 blank | 11 comment | 0 complexity | 2843bf3e1c009827e7f0e003b1dfad28 MD5 | raw file
Possible License(s): LGPL-2.1, Cube, GPL-3.0, 0BSD, GPL-2.0
- /* -----------------------------------------------------------------------------
- * interpreter.i
- *
- * SWIG file for a simple Guile interpreter
- * ----------------------------------------------------------------------------- */
- %{
- #include <stdio.h>
- GSCM_status guile_init();
- int main(int argc, char **argv) {
- GSCM_status status;
- GSCM_top_level toplev;
- char *eval_answer;
- char input_str[16384];
- int done;
- /* start a scheme interpreter */
- status = gscm_run_scm(argc, argv, 0, stdout, stderr, guile_init, 0, "#t");
- if (status != GSCM_OK) {
- fputs(gscm_error_msg(status), stderr);
- fputc('\n', stderr);
- printf("Error in startup.\n");
- exit(1);
- }
- /* create the top level environment */
- status = gscm_create_top_level(&toplev);
- if (status != GSCM_OK) {
- fputs(gscm_error_msg(status), stderr);
- fputc('\n', stderr);
- exit(1);
- }
- /* now sit in a scheme eval loop: I input the expressions, have guile
- * evaluate them, and then get another expression.
- */
- done = 0;
- fprintf(stdout,"Guile > ");
- while (!done) {
- if (fgets(input_str,16384,stdin) == NULL) {
- exit(1);
- } else {
- if (strncmp(input_str,"quit",4) == 0) exit(1);
- status = gscm_eval_str(&eval_answer, toplev, input_str);
- fprintf(stdout,"%s\n", eval_answer);
- fprintf(stdout,"Guile > ");
- }
- }
- /* now clean up and quit */
- gscm_destroy_top_level(toplev);
- }
- %}