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Added backtrace via --trace option and a lot more helpful information for debugging. (0.22.0)

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This commit is contained in:
Johannes Findeisen 2025-10-04 17:03:41 +02:00
commit bd51aea318
8 changed files with 129 additions and 11 deletions
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23
src/fun.c
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@ -24,16 +24,18 @@ static void print_usage(const char *prog) {
printf("Fun %s\n", FUN_VERSION);
printf("Usage:\n");
#ifdef FUN_WITH_REPL
printf(" %s [script.fun]\n", prog ? prog : "fun");
printf(" %s [--trace|-t] [script.fun]\n", prog ? prog : "fun");
printf(" %s --help | -h\n", prog ? prog : "fun");
printf(" %s --version | -V\n", prog ? prog : "fun");
printf("\n");
printf("Options:\n --trace, -t Print executed ops and stack tops during run\n\n");
printf("When no script is provided, a REPL starts. Submit an empty line to execute the buffer.\n");
#else
printf(" %s <script.fun>\n", prog ? prog : "fun");
printf(" %s [--trace|-t] <script.fun>\n", prog ? prog : "fun");
printf(" %s --help | -h\n", prog ? prog : "fun");
printf(" %s --version | -V\n", prog ? prog : "fun");
printf("\n");
printf("Options:\n --trace, -t Print executed ops and stack tops during run\n\n");
printf("REPL is disabled in this build. Please provide a script file to run.\n");
#endif
}
@ -42,8 +44,9 @@ int main(int argc, char **argv) {
VM vm;
vm_init(&vm);
if (argc > 1) {
const char *arg = argv[1];
int argi = 1;
for (; argi < argc; ++argi) {
const char *arg = argv[argi];
if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
print_usage(argv[0]);
return 0;
@ -52,18 +55,24 @@ int main(int argc, char **argv) {
printf("Fun %s\n", FUN_VERSION);
return 0;
}
if (strcmp(arg, "--trace") == 0 || strcmp(arg, "-t") == 0) {
vm.trace_enabled = 1;
continue;
}
/* first non-option assumed to be script path */
break;
}
#ifndef FUN_WITH_REPL
if (argc <= 1) {
if (argi >= argc) {
fprintf(stderr, "Error: REPL is disabled. Please provide a script to run.\n");
print_usage(argv[0]);
return 2;
}
#endif
if (argc > 1) {
const char *path = argv[1];
if (argi < argc) {
const char *path = argv[argi];
Bytecode *bc = parse_file_to_bytecode(path);
if (!bc) {
fprintf(stderr, "Failed to compile script: %s\n", path);