diff options
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | repl.c | 73 |
3 files changed, 76 insertions, 2 deletions
@@ -1,6 +1,7 @@ # Build files /build -/ell +/interpreter +/repl # Qt Creator files /CMakeLists.txt.user* @@ -4,7 +4,7 @@ all: interpreter interpreter: interpreter.c ell.c $(CC) $(CFLAGS) $< -o $@ repl: repl.c ell.c - $(CC) $(CFLAGS) $< -o $@ + $(CC) $(CFLAGS) $< -o $@ -lreadline clean: rm -f interpreter repl .PHONY: all clean @@ -0,0 +1,73 @@ +/* + * repl.c: test REPL + * + * Copyright (c) 2017, Přemysl Janouch <p.janouch@gmail.com> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#include "ell.c" +#include <readline/readline.h> +#include <readline/history.h> + +int +main (int argc, char *argv[]) { + (void) argc; + + struct context ctx; + context_init (&ctx); + if (!init_runtime_library (&ctx)) + printf ("%s\n", "runtime library initialization failed"); + + using_history (); + const char *slash = strrchr (argv[0], '/'); + rl_readline_name = slash ? ++slash : argv[0]; + + char *line; + while ((line = readline ("> "))) { + struct parser parser; + parser_init (&parser, line, strlen (line)); + add_history (line); + + const char *e = NULL; + struct item *program = parser_run (&parser, &e); + free (line); + if (e) { + printf ("\x1b[31m%s: %s\x1b[0m\n", "parse error", e); + parser_free (&parser); + continue; + } + parser_free (&parser); + + struct item *result = NULL; + (void) execute (&ctx, program, &result); + item_free_list (program); + + const char *failure = ctx.error; + if (ctx.memory_failure) + failure = "memory allocation failure"; + if (failure) { + printf ("\x1b[31m%s: %s\x1b[0m\n", "runtime error", failure); + free (ctx.error); + ctx.error = NULL; + ctx.memory_failure = false; + } else { + print_tree (result, 0); + putchar ('\n'); + item_free_list (result); + } + } + context_free (&ctx); + return 0; +} |