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cbcvm.c
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cbcvm.c
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#include <getopt.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "agent.h"
#include "builtin_modules.h"
#include "cbcvm.h"
#include "compiler.h"
#include "disassemble.h"
#include "eval.h"
#include "gc.h"
#include "intrinsics.h"
#include "str.h"
#include "repl.h"
#include "value.h"
struct cb_options cb_options;
#ifdef PROFILE
# include <signal.h>
void sigint_handler(int signum)
{
/* libc exit so gmon.out is saved */
exit(130);
}
#endif
int run_file(const char *filename)
{
cb_bytecode *bytecode = NULL;
int result;
result = cb_compile_file("<script>", filename, &bytecode);
if (cb_options.disasm && !result)
result = cb_disassemble(bytecode);
if (!result) {
cb_vm_init(bytecode);
cb_instantiate_builtin_modules();
result = cb_run();
cb_vm_deinit();
}
if (bytecode)
cb_bytecode_free(bytecode);
return result;
}
static const char *help = (
"Usage:\n"
"\tcbcvm [options]\n"
"\tcbcvm [options] <file> [<arg>]...\n"
"\tcbcvm -h | --help\n"
"\n"
"Options:\n"
"\t-h, --help Print this help text.\n"
"\t-D Enable all \"debug-\" features.\n"
"\t--debug-vm Print VM debug information during execution.\n"
"\t--debug-gc Print GC debug information during execution.\n"
"\t--debug-disasm Print a disassembly of the program before execution.\n"
"\t--stress-gc Collect garbage after every allocation.\n"
);
static int parse_opts(int *argc, char ***argv, char **fname_out)
{
static struct option long_opts[] = {
{"debug-vm", no_argument, &cb_options.debug_vm, 1 },
{"debug-gc", no_argument, &cb_options.debug_gc, 1 },
{"debug-disasm", no_argument, &cb_options.disasm, 1 },
{"stress-gc", no_argument, &cb_options.stress_gc, 1 },
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0 },
};
int c;
int opt_index;
for (;;) {
c = getopt_long(*argc, *argv, "hD", long_opts, &opt_index);
if (c == -1)
break;
switch (c) {
case 'D':
cb_options.debug_gc =
cb_options.debug_vm =
cb_options.disasm = 1;
break;
case 'h':
fputs(help, stdout);
exit(0);
break;
case '?':
return 1;
}
}
if (optind < *argc)
*fname_out = (*argv)[optind++];
else
*fname_out = NULL;
*argc -= optind;
*argv += optind;
return 0;
}
int main(int argc, char **argv) {
int result;
char *fname;
#ifdef PROFILE
struct sigaction sigint_action;
sigint_action.sa_handler = sigint_handler;
sigemptyset(&sigint_action.sa_mask);
sigint_action.sa_flags = 0;
sigaction(SIGINT, &sigint_action, NULL);
#endif
if (parse_opts(&argc, &argv, &fname))
return 1;
if (cb_agent_init())
return 1;
cb_intrinsics_set_argv(argc, argv);
if (!fname) {
result = cb_repl();
} else {
result = run_file(fname);
}
cb_agent_deinit();
return result;
}