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Implement mqjsc compiler for standalone C binaries #5

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e094e2d
Design and implement mqjsc compiler for standalone binaries
google-labs-jules[bot] Mar 27, 2026
e69d6d2
Implement mqjsc compiler using C source templates
google-labs-jules[bot] Mar 27, 2026
78d1dc7
Merge runtime into mqjs.c using macros and implement mqjsc compiler
google-labs-jules[bot] Mar 27, 2026
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27 changes: 21 additions & 6 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -75,17 +75,27 @@ ifdef CONFIG_ARM32
MQJS_BUILD_FLAGS=-m32
endif

PROGS=mqjs$(EXE) example$(EXE)
PROGS=mqjs$(EXE) mqjsc$(EXE) example$(EXE)
TEST_PROGS=dtoa_test libm_test

all: $(PROGS)

MQJS_OBJS=mqjs.o readline_tty.o readline.o mquickjs.o dtoa.o libm.o cutils.o
MQJS_OBJS=mqjs.o readline_tty.o readline.o mqjs_runtime.o mquickjs.o dtoa.o libm.o cutils.o
MQUICKJS_LIB_OBJS=mquickjs.o mqjs_runtime.o dtoa.o libm.o cutils.o
LIBS=-lm

mqjs$(EXE): $(MQJS_OBJS)
mqjs$(EXE): mqjs.o readline_tty.o readline.o libmquickjs.a
$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

mqjsc$(EXE): mqjsc.o libmquickjs.a
$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

mqjs_runtime.o: mqjs.c
$(CC) $(CFLAGS) -DMQJS_RUNTIME_ONLY -c -o $@ $<

libmquickjs.a: $(MQUICKJS_LIB_OBJS)
$(AR) rcs $@ $^

mquickjs.o: mquickjs_atom.h

mqjs_stdlib: mqjs_stdlib.host.o mquickjs_build.host.o
Expand All @@ -98,11 +108,12 @@ mqjs_stdlib.h: mqjs_stdlib
./mqjs_stdlib $(MQJS_BUILD_FLAGS) > $@

mqjs.o: mqjs_stdlib.h
mqjsc.o: mqjs_stdlib.h

# C API example
example.o: example_stdlib.h

example$(EXE): example.o mquickjs.o dtoa.o libm.o cutils.o
example$(EXE): example.o libmquickjs.a
$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

example_stdlib: example_stdlib.host.o mquickjs_build.host.o
Expand All @@ -117,7 +128,7 @@ example_stdlib.h: example_stdlib
%.host.o: %.c
$(HOST_CC) $(HOST_CFLAGS) -c -o $@ $<

test: mqjs example
test: mqjs mqjsc example
./mqjs tests/test_closure.js
./mqjs tests/test_language.js
./mqjs tests/test_loop.js
Expand All @@ -127,6 +138,10 @@ test: mqjs example
# @sha256sum -c test_builtin.sha256
./mqjs -b test_builtin.bin
./example tests/test_rect.js
# test standalone compiler
./mqjsc -o test_standalone tests/test_builtin.js
./test_standalone
rm -f test_standalone

microbench: mqjs
./mqjs tests/microbench.js
Expand All @@ -147,6 +162,6 @@ rempio2_test: tests/rempio2_test.o libm.o
$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

clean:
rm -f *.o *.d *~ tests/*.o tests/*.d tests/*~ test_builtin.bin mqjs_stdlib mqjs_stdlib.h mquickjs_build_atoms mquickjs_atom.h mqjs_example example_stdlib example_stdlib.h $(PROGS) $(TEST_PROGS)
rm -f *.o *.a *.d *~ tests/*.o tests/*.d tests/*~ test_builtin.bin mqjs_stdlib mqjs_stdlib.h mquickjs_build_atoms mquickjs_atom.h mqjs_example example_stdlib example_stdlib.h $(PROGS) $(TEST_PROGS)

-include $(wildcard *.d)
75 changes: 1 addition & 74 deletions example.c
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@

#include "cutils.h"
#include "mquickjs.h"
#include "mqjs_runtime.h"

#define JS_CLASS_RECTANGLE (JS_CLASS_USER + 0)
#define JS_CLASS_FILLED_RECTANGLE (JS_CLASS_USER + 1)
Expand Down Expand Up @@ -168,87 +169,13 @@ static JSValue js_filled_rectangle_get_color(JSContext *ctx, JSValue *this_val,
return JS_NewInt32(ctx, d->color);
}

static JSValue js_print(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
int i;
JSValue v;

for(i = 0; i < argc; i++) {
if (i != 0)
putchar(' ');
v = argv[i];
if (JS_IsString(ctx, v)) {
JSCStringBuf buf;
const char *str;
size_t len;
str = JS_ToCStringLen(ctx, &len, v, &buf);
fwrite(str, 1, len, stdout);
} else {
JS_PrintValueF(ctx, argv[i], JS_DUMP_LONG);
}
}
putchar('\n');
return JS_UNDEFINED;
}

#if defined(__linux__) || defined(__APPLE__)
static int64_t get_time_ms(void)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (uint64_t)ts.tv_sec * 1000 + (ts.tv_nsec / 1000000);
}
#else
static int64_t get_time_ms(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return (int64_t)tv.tv_sec * 1000 + (tv.tv_usec / 1000);
}
#endif

static JSValue js_date_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return JS_NewInt64(ctx, (int64_t)tv.tv_sec * 1000 + (tv.tv_usec / 1000));
}

static JSValue js_performance_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
return JS_NewInt64(ctx, get_time_ms());
}

#include "example_stdlib.h"

static void js_log_func(void *opaque, const void *buf, size_t buf_len)
{
fwrite(buf, 1, buf_len, stdout);
}

static uint8_t *load_file(const char *filename, int *plen)
{
FILE *f;
uint8_t *buf;
int buf_len;

f = fopen(filename, "rb");
if (!f) {
perror(filename);
exit(1);
}
fseek(f, 0, SEEK_END);
buf_len = ftell(f);
fseek(f, 0, SEEK_SET);
buf = malloc(buf_len + 1);
fread(buf, 1, buf_len, f);
buf[buf_len] = '\0';
fclose(f);
if (plen)
*plen = buf_len;
return buf;
}

int main(int argc, const char **argv)
{
size_t mem_size;
Expand Down
99 changes: 53 additions & 46 deletions mqjs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,19 +34,51 @@
#include <sys/time.h>
#include <math.h>
#include <fcntl.h>
#include <unistd.h>

#include "cutils.h"
#ifndef MQJS_RUNTIME_ONLY
#include "readline_tty.h"
#endif
#include "mquickjs.h"
#include "mqjs_runtime.h"

static uint8_t *load_file(const char *filename, int *plen);
static void dump_error(JSContext *ctx);
uint8_t *load_file(const char *filename, int *plen)
{
FILE *f;
uint8_t *buf;
int buf_len;

static JSValue js_print(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
f = fopen(filename, "rb");
if (!f) {
perror(filename);
exit(1);
}
fseek(f, 0, SEEK_END);
buf_len = ftell(f);
fseek(f, 0, SEEK_SET);
buf = malloc(buf_len + 1);
if (!buf) {
fclose(f);
return NULL;
}
if (fread(buf, 1, buf_len, f) != (size_t)buf_len) {
free(buf);
fclose(f);
return NULL;
}
buf[buf_len] = '\0';
fclose(f);
if (plen)
*plen = buf_len;
return buf;
}

JSValue js_print(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
int i;
JSValue v;

for(i = 0; i < argc; i++) {
if (i != 0)
putchar(' ');
Expand All @@ -65,7 +97,7 @@ static JSValue js_print(JSContext *ctx, JSValue *this_val, int argc, JSValue *ar
return JS_UNDEFINED;
}

static JSValue js_gc(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_gc(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
JS_GC(ctx);
return JS_UNDEFINED;
Expand All @@ -87,54 +119,48 @@ static int64_t get_time_ms(void)
}
#endif

static JSValue js_date_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_date_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return JS_NewInt64(ctx, (int64_t)tv.tv_sec * 1000 + (tv.tv_usec / 1000));
}

static JSValue js_performance_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_performance_now(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
return JS_NewInt64(ctx, get_time_ms());
}

/* load a script */
static JSValue js_load(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_load(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
const char *filename;
JSCStringBuf buf_str;
uint8_t *buf;
int buf_len;
JSValue ret;

filename = JS_ToCString(ctx, argv[0], &buf_str);
if (!filename)
return JS_EXCEPTION;
buf = load_file(filename, &buf_len);
if (!buf)
return JS_ThrowInternalError(ctx, "could not load file");

ret = JS_Eval(ctx, (const char *)buf, buf_len, filename, 0);
free(buf);
return ret;
}

/* timers */
typedef struct {
BOOL allocated;
JSGCRef func;
int64_t timeout; /* in ms */
} JSTimer;

#define MAX_TIMERS 16

static JSTimer js_timer_list[MAX_TIMERS];

static JSValue js_setTimeout(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_setTimeout(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
JSTimer *th;
int delay, i;
JSValue *pfunc;

if (!JS_IsFunction(ctx, argv[0]))
return JS_ThrowTypeError(ctx, "not a function");
if (JS_ToInt32(ctx, &delay, argv[1]))
Expand All @@ -152,7 +178,7 @@ static JSValue js_setTimeout(JSContext *ctx, JSValue *this_val, int argc, JSValu
return JS_ThrowInternalError(ctx, "too many timers");
}

static JSValue js_clearTimeout(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
JSValue js_clearTimeout(JSContext *ctx, JSValue *this_val, int argc, JSValue *argv)
{
int timer_id;
JSTimer *th;
Expand All @@ -169,7 +195,7 @@ static JSValue js_clearTimeout(JSContext *ctx, JSValue *this_val, int argc, JSVa
return JS_UNDEFINED;
}

static void run_timers(JSContext *ctx)
void run_timers(JSContext *ctx)
{
int64_t min_delay, delay, cur_time;
BOOL has_timer;
Expand All @@ -193,14 +219,14 @@ static void run_timers(JSContext *ctx)
goto fail;
JS_PushArg(ctx, th->func.val); /* func name */
JS_PushArg(ctx, JS_NULL); /* this */

JS_DeleteGCRef(ctx, &th->func);
th->allocated = FALSE;

ret = JS_Call(ctx, 0);
if (JS_IsException(ret)) {
fail:
dump_error(ctx);
/* Error message should be dumped by the caller if needed */
exit(1);
}
min_delay = 0;
Expand All @@ -220,6 +246,8 @@ static void run_timers(JSContext *ctx)
}
}

#ifndef MQJS_RUNTIME_ONLY

#include "mqjs_stdlib.h"

#define STYLE_DEFAULT COLOR_BRIGHT_GREEN
Expand All @@ -235,28 +263,6 @@ static void run_timers(JSContext *ctx)
#define STYLE_RESULT COLOR_BRIGHT_WHITE
#define STYLE_ERROR_MSG COLOR_BRIGHT_RED

static uint8_t *load_file(const char *filename, int *plen)
{
FILE *f;
uint8_t *buf;
int buf_len;

f = fopen(filename, "rb");
if (!f) {
perror(filename);
exit(1);
}
fseek(f, 0, SEEK_END);
buf_len = ftell(f);
fseek(f, 0, SEEK_SET);
buf = malloc(buf_len + 1);
fread(buf, 1, buf_len, f);
buf[buf_len] = '\0';
fclose(f);
if (plen)
*plen = buf_len;
return buf;
}

static int js_log_err_flag;

Expand Down Expand Up @@ -772,3 +778,4 @@ int main(int argc, const char **argv)
free(mem_buf);
return 1;
}
#endif /* !MQJS_RUNTIME_ONLY */
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