761 lines
21 KiB
C
761 lines
21 KiB
C
/*
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* QuickJS command line compiler
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*
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* Copyright (c) 2018-2021 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include <string.h>
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#include <assert.h>
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#include <unistd.h>
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#include <errno.h>
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#if !defined(_WIN32)
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#include <sys/wait.h>
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#endif
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#include "cutils.h"
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#include "quickjs-libc.h"
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typedef struct {
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char *name;
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char *short_name;
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int flags;
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} namelist_entry_t;
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typedef struct namelist_t {
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namelist_entry_t *array;
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int count;
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int size;
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} namelist_t;
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typedef struct {
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const char *option_name;
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const char *init_name;
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} FeatureEntry;
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static namelist_t cname_list;
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static namelist_t cmodule_list;
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static namelist_t init_module_list;
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static uint64_t feature_bitmap;
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static FILE *outfile;
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static BOOL byte_swap;
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static BOOL dynamic_export;
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static const char *c_ident_prefix = "qjsc_";
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#define FE_ALL (-1)
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static const FeatureEntry feature_list[] = {
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{ "date", "Date" },
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{ "eval", "Eval" },
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{ "string-normalize", "StringNormalize" },
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{ "regexp", "RegExp" },
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{ "json", "JSON" },
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{ "proxy", "Proxy" },
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{ "map", "MapSet" },
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{ "typedarray", "TypedArrays" },
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{ "promise", "Promise" },
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#define FE_MODULE_LOADER 9
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{ "module-loader", NULL },
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{ "bigint", "BigInt" },
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};
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void namelist_add(namelist_t *lp, const char *name, const char *short_name,
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int flags)
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{
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namelist_entry_t *e;
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if (lp->count == lp->size) {
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size_t newsize = lp->size + (lp->size >> 1) + 4;
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namelist_entry_t *a =
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realloc(lp->array, sizeof(lp->array[0]) * newsize);
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/* XXX: check for realloc failure */
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lp->array = a;
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lp->size = newsize;
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}
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e = &lp->array[lp->count++];
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e->name = strdup(name);
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if (short_name)
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e->short_name = strdup(short_name);
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else
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e->short_name = NULL;
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e->flags = flags;
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}
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void namelist_free(namelist_t *lp)
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{
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while (lp->count > 0) {
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namelist_entry_t *e = &lp->array[--lp->count];
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free(e->name);
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free(e->short_name);
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}
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free(lp->array);
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lp->array = NULL;
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lp->size = 0;
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}
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namelist_entry_t *namelist_find(namelist_t *lp, const char *name)
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{
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int i;
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for(i = 0; i < lp->count; i++) {
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namelist_entry_t *e = &lp->array[i];
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if (!strcmp(e->name, name))
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return e;
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}
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return NULL;
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}
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static void get_c_name(char *buf, size_t buf_size, const char *file)
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{
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const char *p, *r;
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size_t len, i;
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int c;
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char *q;
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p = strrchr(file, '/');
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if (!p)
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p = file;
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else
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p++;
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r = strrchr(p, '.');
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if (!r)
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len = strlen(p);
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else
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len = r - p;
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pstrcpy(buf, buf_size, c_ident_prefix);
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q = buf + strlen(buf);
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for(i = 0; i < len; i++) {
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c = p[i];
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if (!((c >= '0' && c <= '9') ||
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(c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z'))) {
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c = '_';
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}
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if ((q - buf) < buf_size - 1)
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*q++ = c;
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}
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*q = '\0';
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}
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static void dump_hex(FILE *f, const uint8_t *buf, size_t len)
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{
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size_t i, col;
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col = 0;
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for(i = 0; i < len; i++) {
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fprintf(f, " 0x%02x,", buf[i]);
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if (++col == 8) {
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fprintf(f, "\n");
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col = 0;
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}
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}
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if (col != 0)
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fprintf(f, "\n");
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}
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static void output_object_code(JSContext *ctx,
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FILE *fo, JSValueConst obj, const char *c_name,
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BOOL load_only)
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{
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uint8_t *out_buf;
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size_t out_buf_len;
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int flags;
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flags = JS_WRITE_OBJ_BYTECODE;
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if (byte_swap)
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flags |= JS_WRITE_OBJ_BSWAP;
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out_buf = JS_WriteObject(ctx, &out_buf_len, obj, flags);
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if (!out_buf) {
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js_std_dump_error(ctx);
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exit(1);
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}
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namelist_add(&cname_list, c_name, NULL, load_only);
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fprintf(fo, "const uint32_t %s_size = %u;\n\n",
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c_name, (unsigned int)out_buf_len);
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fprintf(fo, "const uint8_t %s[%u] = {\n",
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c_name, (unsigned int)out_buf_len);
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dump_hex(fo, out_buf, out_buf_len);
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fprintf(fo, "};\n\n");
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js_free(ctx, out_buf);
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}
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static int js_module_dummy_init(JSContext *ctx, JSModuleDef *m)
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{
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/* should never be called when compiling JS code */
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abort();
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}
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static void find_unique_cname(char *cname, size_t cname_size)
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{
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char cname1[1024];
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int suffix_num;
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size_t len, max_len;
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assert(cname_size >= 32);
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/* find a C name not matching an existing module C name by
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adding a numeric suffix */
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len = strlen(cname);
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max_len = cname_size - 16;
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if (len > max_len)
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cname[max_len] = '\0';
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suffix_num = 1;
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for(;;) {
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snprintf(cname1, sizeof(cname1), "%s_%d", cname, suffix_num);
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if (!namelist_find(&cname_list, cname1))
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break;
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suffix_num++;
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}
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pstrcpy(cname, cname_size, cname1);
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}
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JSModuleDef *jsc_module_loader(JSContext *ctx,
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const char *module_name, void *opaque)
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{
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JSModuleDef *m;
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namelist_entry_t *e;
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/* check if it is a declared C or system module */
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e = namelist_find(&cmodule_list, module_name);
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if (e) {
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/* add in the static init module list */
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namelist_add(&init_module_list, e->name, e->short_name, 0);
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/* create a dummy module */
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m = JS_NewCModule(ctx, module_name, js_module_dummy_init);
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} else if (has_suffix(module_name, ".so")) {
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fprintf(stderr, "Warning: binary module '%s' will be dynamically loaded\n", module_name);
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/* create a dummy module */
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m = JS_NewCModule(ctx, module_name, js_module_dummy_init);
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/* the resulting executable will export its symbols for the
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dynamic library */
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dynamic_export = TRUE;
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} else {
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size_t buf_len;
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uint8_t *buf;
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JSValue func_val;
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char cname[1024];
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buf = js_load_file(ctx, &buf_len, module_name);
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if (!buf) {
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JS_ThrowReferenceError(ctx, "could not load module filename '%s'",
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module_name);
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return NULL;
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}
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/* compile the module */
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func_val = JS_Eval(ctx, (char *)buf, buf_len, module_name,
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JS_EVAL_TYPE_MODULE | JS_EVAL_FLAG_COMPILE_ONLY);
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js_free(ctx, buf);
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if (JS_IsException(func_val))
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return NULL;
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get_c_name(cname, sizeof(cname), module_name);
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if (namelist_find(&cname_list, cname)) {
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find_unique_cname(cname, sizeof(cname));
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}
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output_object_code(ctx, outfile, func_val, cname, TRUE);
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/* the module is already referenced, so we must free it */
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m = JS_VALUE_GET_PTR(func_val);
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JS_FreeValue(ctx, func_val);
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}
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return m;
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}
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static void compile_file(JSContext *ctx, FILE *fo,
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const char *filename,
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const char *c_name1,
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int module)
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{
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uint8_t *buf;
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char c_name[1024];
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int eval_flags;
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JSValue obj;
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size_t buf_len;
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buf = js_load_file(ctx, &buf_len, filename);
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if (!buf) {
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fprintf(stderr, "Could not load '%s'\n", filename);
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exit(1);
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}
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eval_flags = JS_EVAL_FLAG_COMPILE_ONLY;
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if (module < 0) {
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module = (has_suffix(filename, ".mjs") ||
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JS_DetectModule((const char *)buf, buf_len));
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}
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if (module)
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eval_flags |= JS_EVAL_TYPE_MODULE;
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else
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eval_flags |= JS_EVAL_TYPE_GLOBAL;
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obj = JS_Eval(ctx, (const char *)buf, buf_len, filename, eval_flags);
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if (JS_IsException(obj)) {
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js_std_dump_error(ctx);
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exit(1);
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}
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js_free(ctx, buf);
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if (c_name1) {
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pstrcpy(c_name, sizeof(c_name), c_name1);
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} else {
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get_c_name(c_name, sizeof(c_name), filename);
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}
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output_object_code(ctx, fo, obj, c_name, FALSE);
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JS_FreeValue(ctx, obj);
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}
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static const char main_c_template1[] =
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"int main(int argc, char **argv)\n"
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"{\n"
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" JSRuntime *rt;\n"
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" JSContext *ctx;\n"
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" rt = JS_NewRuntime();\n"
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" js_std_set_worker_new_context_func(JS_NewCustomContext);\n"
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" js_std_init_handlers(rt);\n"
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;
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static const char main_c_template2[] =
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" js_std_loop(ctx);\n"
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" js_std_free_handlers(rt);\n"
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" JS_FreeContext(ctx);\n"
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" JS_FreeRuntime(rt);\n"
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" return 0;\n"
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"}\n";
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#define PROG_NAME "qjsc"
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void help(void)
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{
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printf("QuickJS Compiler version " CONFIG_VERSION "\n"
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"usage: " PROG_NAME " [options] [files]\n"
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"\n"
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"options are:\n"
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"-c only output bytecode to a C file\n"
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"-e output main() and bytecode to a C file (default = executable output)\n"
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"-o output set the output filename\n"
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"-N cname set the C name of the generated data\n"
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"-m compile as Javascript module (default=autodetect)\n"
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"-D module_name compile a dynamically loaded module or worker\n"
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"-M module_name[,cname] add initialization code for an external C module\n"
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"-x byte swapped output\n"
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"-p prefix set the prefix of the generated C names\n"
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"-S n set the maximum stack size to 'n' bytes (default=%d)\n",
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JS_DEFAULT_STACK_SIZE);
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#ifdef CONFIG_LTO
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{
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int i;
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printf("-flto use link time optimization\n");
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printf("-fbignum enable bignum extensions\n");
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printf("-fno-[");
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for(i = 0; i < countof(feature_list); i++) {
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if (i != 0)
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printf("|");
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printf("%s", feature_list[i].option_name);
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}
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printf("]\n"
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" disable selected language features (smaller code size)\n");
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}
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#endif
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exit(1);
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}
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#if defined(CONFIG_CC) && !defined(_WIN32)
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int exec_cmd(char **argv)
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{
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int pid, status, ret;
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pid = fork();
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if (pid == 0) {
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execvp(argv[0], argv);
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exit(1);
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}
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for(;;) {
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ret = waitpid(pid, &status, 0);
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if (ret == pid && WIFEXITED(status))
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break;
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}
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return WEXITSTATUS(status);
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}
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static int output_executable(const char *out_filename, const char *cfilename,
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BOOL use_lto, BOOL verbose, const char *exename)
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{
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const char *argv[64];
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const char **arg, *bn_suffix, *lto_suffix;
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char libjsname[1024];
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char exe_dir[1024], inc_dir[1024], lib_dir[1024], buf[1024], *p;
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int ret;
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/* get the directory of the executable */
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pstrcpy(exe_dir, sizeof(exe_dir), exename);
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p = strrchr(exe_dir, '/');
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if (p) {
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*p = '\0';
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} else {
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pstrcpy(exe_dir, sizeof(exe_dir), ".");
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}
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/* if 'quickjs.h' is present at the same path as the executable, we
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use it as include and lib directory */
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snprintf(buf, sizeof(buf), "%s/quickjs.h", exe_dir);
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if (access(buf, R_OK) == 0) {
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pstrcpy(inc_dir, sizeof(inc_dir), exe_dir);
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pstrcpy(lib_dir, sizeof(lib_dir), exe_dir);
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} else {
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snprintf(inc_dir, sizeof(inc_dir), "%s/include/quickjs", CONFIG_PREFIX);
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snprintf(lib_dir, sizeof(lib_dir), "%s/lib/quickjs", CONFIG_PREFIX);
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}
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lto_suffix = "";
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bn_suffix = "";
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arg = argv;
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*arg++ = CONFIG_CC;
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*arg++ = "-O2";
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#ifdef CONFIG_LTO
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if (use_lto) {
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*arg++ = "-flto";
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lto_suffix = ".lto";
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}
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#endif
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/* XXX: use the executable path to find the includes files and
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libraries */
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*arg++ = "-D";
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*arg++ = "_GNU_SOURCE";
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*arg++ = "-I";
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*arg++ = inc_dir;
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*arg++ = "-o";
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*arg++ = out_filename;
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if (dynamic_export)
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*arg++ = "-rdynamic";
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*arg++ = cfilename;
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snprintf(libjsname, sizeof(libjsname), "%s/libquickjs%s%s.a",
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lib_dir, bn_suffix, lto_suffix);
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*arg++ = libjsname;
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*arg++ = "-lm";
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*arg++ = "-ldl";
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*arg++ = "-lpthread";
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*arg = NULL;
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if (verbose) {
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for(arg = argv; *arg != NULL; arg++)
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printf("%s ", *arg);
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printf("\n");
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}
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ret = exec_cmd((char **)argv);
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unlink(cfilename);
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return ret;
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}
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#else
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static int output_executable(const char *out_filename, const char *cfilename,
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BOOL use_lto, BOOL verbose, const char *exename)
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{
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fprintf(stderr, "Executable output is not supported for this target\n");
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exit(1);
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return 0;
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}
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#endif
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typedef enum {
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OUTPUT_C,
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OUTPUT_C_MAIN,
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OUTPUT_EXECUTABLE,
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} OutputTypeEnum;
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int main(int argc, char **argv)
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{
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int c, i, verbose;
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const char *out_filename, *cname;
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char cfilename[1024];
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FILE *fo;
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JSRuntime *rt;
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JSContext *ctx;
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BOOL use_lto;
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int module;
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OutputTypeEnum output_type;
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size_t stack_size;
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#ifdef CONFIG_BIGNUM
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BOOL bignum_ext = FALSE;
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#endif
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namelist_t dynamic_module_list;
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out_filename = NULL;
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output_type = OUTPUT_EXECUTABLE;
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cname = NULL;
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feature_bitmap = FE_ALL;
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module = -1;
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byte_swap = FALSE;
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verbose = 0;
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use_lto = FALSE;
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stack_size = 0;
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memset(&dynamic_module_list, 0, sizeof(dynamic_module_list));
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/* add system modules */
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namelist_add(&cmodule_list, "std", "std", 0);
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namelist_add(&cmodule_list, "os", "os", 0);
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for(;;) {
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c = getopt(argc, argv, "ho:cN:f:mxevM:p:S:D:");
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if (c == -1)
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break;
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switch(c) {
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case 'h':
|
|
help();
|
|
case 'o':
|
|
out_filename = optarg;
|
|
break;
|
|
case 'c':
|
|
output_type = OUTPUT_C;
|
|
break;
|
|
case 'e':
|
|
output_type = OUTPUT_C_MAIN;
|
|
break;
|
|
case 'N':
|
|
cname = optarg;
|
|
break;
|
|
case 'f':
|
|
{
|
|
const char *p;
|
|
p = optarg;
|
|
if (!strcmp(optarg, "lto")) {
|
|
use_lto = TRUE;
|
|
} else if (strstart(p, "no-", &p)) {
|
|
use_lto = TRUE;
|
|
for(i = 0; i < countof(feature_list); i++) {
|
|
if (!strcmp(p, feature_list[i].option_name)) {
|
|
feature_bitmap &= ~((uint64_t)1 << i);
|
|
break;
|
|
}
|
|
}
|
|
if (i == countof(feature_list))
|
|
goto bad_feature;
|
|
} else
|
|
#ifdef CONFIG_BIGNUM
|
|
if (!strcmp(optarg, "bignum")) {
|
|
bignum_ext = TRUE;
|
|
} else
|
|
#endif
|
|
{
|
|
bad_feature:
|
|
fprintf(stderr, "unsupported feature: %s\n", optarg);
|
|
exit(1);
|
|
}
|
|
}
|
|
break;
|
|
case 'm':
|
|
module = 1;
|
|
break;
|
|
case 'M':
|
|
{
|
|
char *p;
|
|
char path[1024];
|
|
char cname[1024];
|
|
pstrcpy(path, sizeof(path), optarg);
|
|
p = strchr(path, ',');
|
|
if (p) {
|
|
*p = '\0';
|
|
pstrcpy(cname, sizeof(cname), p + 1);
|
|
} else {
|
|
get_c_name(cname, sizeof(cname), path);
|
|
}
|
|
namelist_add(&cmodule_list, path, cname, 0);
|
|
}
|
|
break;
|
|
case 'D':
|
|
namelist_add(&dynamic_module_list, optarg, NULL, 0);
|
|
break;
|
|
case 'x':
|
|
byte_swap = TRUE;
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'p':
|
|
c_ident_prefix = optarg;
|
|
break;
|
|
case 'S':
|
|
stack_size = (size_t)strtod(optarg, NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (optind >= argc)
|
|
help();
|
|
|
|
if (!out_filename) {
|
|
if (output_type == OUTPUT_EXECUTABLE) {
|
|
out_filename = "a.out";
|
|
} else {
|
|
out_filename = "out.c";
|
|
}
|
|
}
|
|
|
|
if (output_type == OUTPUT_EXECUTABLE) {
|
|
#if defined(_WIN32) || defined(__ANDROID__)
|
|
/* XXX: find a /tmp directory ? */
|
|
snprintf(cfilename, sizeof(cfilename), "out%d.c", getpid());
|
|
#else
|
|
snprintf(cfilename, sizeof(cfilename), "/tmp/out%d.c", getpid());
|
|
#endif
|
|
} else {
|
|
pstrcpy(cfilename, sizeof(cfilename), out_filename);
|
|
}
|
|
|
|
fo = fopen(cfilename, "w");
|
|
if (!fo) {
|
|
perror(cfilename);
|
|
exit(1);
|
|
}
|
|
outfile = fo;
|
|
|
|
rt = JS_NewRuntime();
|
|
ctx = JS_NewContext(rt);
|
|
#ifdef CONFIG_BIGNUM
|
|
if (bignum_ext) {
|
|
JS_AddIntrinsicBigFloat(ctx);
|
|
JS_AddIntrinsicBigDecimal(ctx);
|
|
JS_AddIntrinsicOperators(ctx);
|
|
JS_EnableBignumExt(ctx, TRUE);
|
|
}
|
|
#endif
|
|
|
|
/* loader for ES6 modules */
|
|
JS_SetModuleLoaderFunc(rt, NULL, jsc_module_loader, NULL);
|
|
|
|
fprintf(fo, "/* File generated automatically by the QuickJS compiler. */\n"
|
|
"\n"
|
|
);
|
|
|
|
if (output_type != OUTPUT_C) {
|
|
fprintf(fo, "#include \"quickjs-libc.h\"\n"
|
|
"\n"
|
|
);
|
|
} else {
|
|
fprintf(fo, "#include <inttypes.h>\n"
|
|
"\n"
|
|
);
|
|
}
|
|
|
|
for(i = optind; i < argc; i++) {
|
|
const char *filename = argv[i];
|
|
compile_file(ctx, fo, filename, cname, module);
|
|
cname = NULL;
|
|
}
|
|
|
|
for(i = 0; i < dynamic_module_list.count; i++) {
|
|
if (!jsc_module_loader(ctx, dynamic_module_list.array[i].name, NULL)) {
|
|
fprintf(stderr, "Could not load dynamic module '%s'\n",
|
|
dynamic_module_list.array[i].name);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (output_type != OUTPUT_C) {
|
|
fprintf(fo,
|
|
"static JSContext *JS_NewCustomContext(JSRuntime *rt)\n"
|
|
"{\n"
|
|
" JSContext *ctx = JS_NewContextRaw(rt);\n"
|
|
" if (!ctx)\n"
|
|
" return NULL;\n");
|
|
/* add the basic objects */
|
|
fprintf(fo, " JS_AddIntrinsicBaseObjects(ctx);\n");
|
|
for(i = 0; i < countof(feature_list); i++) {
|
|
if ((feature_bitmap & ((uint64_t)1 << i)) &&
|
|
feature_list[i].init_name) {
|
|
fprintf(fo, " JS_AddIntrinsic%s(ctx);\n",
|
|
feature_list[i].init_name);
|
|
}
|
|
}
|
|
#ifdef CONFIG_BIGNUM
|
|
if (bignum_ext) {
|
|
fprintf(fo,
|
|
" JS_AddIntrinsicBigFloat(ctx);\n"
|
|
" JS_AddIntrinsicBigDecimal(ctx);\n"
|
|
" JS_AddIntrinsicOperators(ctx);\n"
|
|
" JS_EnableBignumExt(ctx, 1);\n");
|
|
}
|
|
#endif
|
|
/* add the precompiled modules (XXX: could modify the module
|
|
loader instead) */
|
|
for(i = 0; i < init_module_list.count; i++) {
|
|
namelist_entry_t *e = &init_module_list.array[i];
|
|
/* initialize the static C modules */
|
|
|
|
fprintf(fo,
|
|
" {\n"
|
|
" extern JSModuleDef *js_init_module_%s(JSContext *ctx, const char *name);\n"
|
|
" js_init_module_%s(ctx, \"%s\");\n"
|
|
" }\n",
|
|
e->short_name, e->short_name, e->name);
|
|
}
|
|
for(i = 0; i < cname_list.count; i++) {
|
|
namelist_entry_t *e = &cname_list.array[i];
|
|
if (e->flags) {
|
|
fprintf(fo, " js_std_eval_binary(ctx, %s, %s_size, 1);\n",
|
|
e->name, e->name);
|
|
}
|
|
}
|
|
fprintf(fo,
|
|
" return ctx;\n"
|
|
"}\n\n");
|
|
|
|
fputs(main_c_template1, fo);
|
|
|
|
if (stack_size != 0) {
|
|
fprintf(fo, " JS_SetMaxStackSize(rt, %u);\n",
|
|
(unsigned int)stack_size);
|
|
}
|
|
|
|
/* add the module loader if necessary */
|
|
if (feature_bitmap & (1 << FE_MODULE_LOADER)) {
|
|
fprintf(fo, " JS_SetModuleLoaderFunc(rt, NULL, js_module_loader, NULL);\n");
|
|
}
|
|
|
|
fprintf(fo,
|
|
" ctx = JS_NewCustomContext(rt);\n"
|
|
" js_std_add_helpers(ctx, argc, argv);\n");
|
|
|
|
for(i = 0; i < cname_list.count; i++) {
|
|
namelist_entry_t *e = &cname_list.array[i];
|
|
if (!e->flags) {
|
|
fprintf(fo, " js_std_eval_binary(ctx, %s, %s_size, 0);\n",
|
|
e->name, e->name);
|
|
}
|
|
}
|
|
fputs(main_c_template2, fo);
|
|
}
|
|
|
|
JS_FreeContext(ctx);
|
|
JS_FreeRuntime(rt);
|
|
|
|
fclose(fo);
|
|
|
|
if (output_type == OUTPUT_EXECUTABLE) {
|
|
return output_executable(out_filename, cfilename, use_lto, verbose,
|
|
argv[0]);
|
|
}
|
|
namelist_free(&cname_list);
|
|
namelist_free(&cmodule_list);
|
|
namelist_free(&init_module_list);
|
|
return 0;
|
|
}
|