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tomo/stdlib/stdlib.c

275 lines
8.3 KiB
C
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// Built-in functions
#include <errno.h>
#include <execinfo.h>
#include <gc.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/random.h>
#include <time.h>
#include "files.h"
#include "integers.h"
#include "metamethods.h"
#include "patterns.h"
#include "siphash.h"
#include "tables.h"
#include "text.h"
#include "util.h"
public void tomo_init(void)
{
GC_INIT();
USE_COLOR = getenv("COLOR") ? strcmp(getenv("COLOR"), "1") == 0 : isatty(STDOUT_FILENO);
getrandom(TOMO_HASH_KEY, sizeof(TOMO_HASH_KEY), 0);
unsigned int seed;
getrandom(&seed, sizeof(seed), 0);
srand(seed);
srand48(seed);
Int$init_random(seed);
if (register_printf_specifier('k', printf_text, printf_text_size))
errx(1, "Couldn't set printf specifier");
}
void print_stack_trace(FILE *out, int start, int stop)
{
// Print stack trace:
fprintf(out, "\x1b[34m");
fflush(out);
void *array[1024];
int64_t size = (int64_t)backtrace(array, sizeof(array)/sizeof(array[0]));
char **strings = strings = backtrace_symbols(array, size);
for (int64_t i = start; i < size - stop; i++) {
char *filename = strings[i];
const char *cmd = heap_strf("addr2line -e %.*s -fisp | sed 's/\\$/./g;s/ at /() at /' >&2", strcspn(filename, "("), filename);
FILE *fp = popen(cmd, "w");
if (fp) {
char *paren = strchrnul(strings[i], '(');
fprintf(fp, "%.*s\n", strcspn(paren + 1, ")"), paren + 1);
}
pclose(fp);
}
fprintf(out, "\x1b[m");
fflush(out);
}
__attribute__((format(printf, 1, 2)))
public _Noreturn void fail(const char *fmt, ...)
{
fflush(stdout);
if (USE_COLOR) fputs("\x1b[31;7m ==================== ERROR ==================== \n\n\x1b[0;1m", stderr);
else fputs("==================== ERROR ====================\n\n", stderr);
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
if (USE_COLOR) fputs("\x1b[m", stderr);
fputs("\n\n", stderr);
va_end(args);
print_stack_trace(stderr, 2, 4);
fflush(stderr);
raise(SIGABRT);
_exit(1);
}
__attribute__((format(printf, 4, 5)))
public _Noreturn void fail_source(const char *filename, int64_t start, int64_t end, const char *fmt, ...)
{
if (USE_COLOR) fputs("\n\x1b[31;7m ==================== ERROR ==================== \n\n\x1b[0;1m", stderr);
else fputs("\n==================== ERROR ====================\n\n", stderr);
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
file_t *file = filename ? load_file(filename) : NULL;
if (filename && file) {
fputs("\n", stderr);
highlight_error(file, file->text+start, file->text+end, "\x1b[31;1m", 2, USE_COLOR);
fputs("\n", stderr);
}
if (USE_COLOR) fputs("\x1b[m", stderr);
print_stack_trace(stderr, 2, 4);
fflush(stderr);
raise(SIGABRT);
_exit(1);
}
public Text_t builtin_last_err()
{
return Text$from_str(strerror(errno));
}
static int TEST_DEPTH = 0;
static file_t *file = NULL;
public void start_test(const char *filename, int64_t start, int64_t end)
{
if (filename && (file == NULL || strcmp(file->filename, filename) != 0))
file = load_file(filename);
if (filename && file) {
for (int i = 0; i < 3*TEST_DEPTH; i++) fputc(' ', stderr);
int64_t first_line_len = (int64_t)strcspn(file->text + start, "\r\n");
fprintf(stderr, USE_COLOR ? "\x1b[33;1m>> \x1b[m%.*s\n" : ">> %.*s\n", first_line_len, file->text + start);
// For multi-line expressions, dedent each and print it on a new line with ".. " in front:
if (end > start + first_line_len) {
int64_t line_num = get_line_number(file, file->text + start);
const char *line_start = get_line(file, line_num);
int64_t indent_len = (int64_t)strspn(line_start, " \t");
for (const char *line = file->text + start + first_line_len; line < file->text + end; line += strcspn(line, "\r\n")) {
line += strspn(line, "\r\n");
if ((int64_t)strspn(line, " \t") >= indent_len)
line += indent_len;
fprintf(stderr, USE_COLOR ? "\x1b[33m.. \x1b[m%.*s\n" : ".. %.*s\n", strcspn(line, "\r\n"), line);
}
}
}
++TEST_DEPTH;
}
public void end_test(const void *expr, const TypeInfo *type, const char *expected, const char *filename, int64_t start, int64_t end)
{
(void)filename;
(void)start;
(void)end;
--TEST_DEPTH;
if (!expr || !type) return;
Text_t expr_text = generic_as_text(expr, USE_COLOR, type);
Text_t type_name = generic_as_text(NULL, false, type);
for (int i = 0; i < 3*TEST_DEPTH; i++) fputc(' ', stderr);
fprintf(stderr, USE_COLOR ? "\x1b[2m=\x1b[0m %k \x1b[2m: %k\x1b[m\n" : "= %k : %k\n", &expr_text, &type_name);
if (expected && expected[0]) {
Text_t expected_text = Text$from_str(expected);
Text_t expr_plain = USE_COLOR ? generic_as_text(expr, false, type) : expr_text;
bool success = Text$equal(&expr_plain, &expected_text);
if (!success) {
Int_t colon = Text$find(expected_text, Text(":"), I_small(1), NULL);
if (colon.small != I_small(0).small) {
Text_t with_type = Text$concat(expr_plain, Text(" : "), type_name);
success = Text$equal(&with_type, &expected_text);
}
}
if (!success) {
fprintf(stderr,
USE_COLOR
? "\n\x1b[31;7m ==================== TEST FAILED ==================== \x1b[0;1m\n\nExpected: \x1b[1;32m%s\x1b[0m\n\x1b[1m But got:\x1b[m %k\n\n"
: "\n==================== TEST FAILED ====================\nExpected: %s\n\n But got: %k\n\n",
expected, &expr_text);
print_stack_trace(stderr, 2, 4);
fflush(stderr);
raise(SIGABRT);
}
}
}
public void say(Text_t text, bool newline)
{
Text$print(stdout, text);
if (newline)
fputc('\n', stdout);
fflush(stdout);
}
public _Noreturn void tomo_exit(Text_t text, int32_t status)
{
if (text.length > 0)
say(text, true);
_exit(status);
}
public Text_t ask(Text_t prompt, bool bold, bool force_tty)
{
Text_t ret = Text("");
FILE *out = stdout;
FILE *in = stdin;
char *line = NULL;
size_t bufsize = 0;
ssize_t length = 0;
char *gc_input = NULL;
if (force_tty && !isatty(STDOUT_FILENO)) {
out = fopen("/dev/tty", "w");
if (!out) goto cleanup;
}
if (bold) fputs("\x1b[1m", out);
Text$print(out, prompt);
if (bold) fputs("\x1b[m", out);
fflush(out);
if (force_tty && !isatty(STDIN_FILENO)) {
in = fopen("/dev/tty", "r");
if (!in) {
fputs("\n", out); // finish the line, since the user can't
goto cleanup;
}
}
length = getline(&line, &bufsize, in);
if (length == -1) {
fputs("\n", out); // finish the line, since we didn't get any input
goto cleanup;
}
if (length > 0 && line[length-1] == '\n') {
line[length-1] = '\0';
--length;
}
gc_input = GC_MALLOC_ATOMIC((size_t)(length + 1));
memcpy(gc_input, line, (size_t)(length + 1));
ret = Text$from_strn(gc_input, (size_t)(length));
cleanup:
if (out && out != stdout) fclose(out);
if (in && in != stdin) fclose(in);
return ret;
}
public bool pop_flag(char **argv, int *i, const char *flag, Text_t *result)
{
if (argv[*i][0] != '-' || argv[*i][1] != '-') {
return false;
} else if (streq(argv[*i] + 2, flag)) {
*result = (Text_t){.length=0};
argv[*i] = NULL;
*i += 1;
return true;
} else if (strncmp(argv[*i] + 2, "no-", 3) == 0 && streq(argv[*i] + 5, flag)) {
*result = Text("no");
argv[*i] = NULL;
*i += 1;
return true;
} else if (strncmp(argv[*i] + 2, flag, strlen(flag)) == 0 && argv[*i][2 + strlen(flag)] == '=') {
*result = Text$from_str(argv[*i] + 2 + strlen(flag) + 1);
argv[*i] = NULL;
*i += 1;
return true;
} else {
return false;
}
}
public void sleep_num(double seconds)
{
struct timespec ts;
ts.tv_sec = (time_t)seconds;
ts.tv_nsec = (long)((seconds - (double)ts.tv_sec) * 1e9);
nanosleep(&ts, NULL);
}
// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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