#include // IWYU pragma: keep #include #include #include #include #include "ant.h" #include "errors.h" #include "internal.h" #include "esm/loader.h" #include "esm/library.h" #include "modules/symbol.h" typedef struct { ant_t *js; ant_value_t arr; } builtin_iter_ctx_t; static void push_builtin_name(const char *name, void *ud) { builtin_iter_ctx_t *ctx = (builtin_iter_ctx_t *)ud; js_arr_push(ctx->js, ctx->arr, js_mkstr(ctx->js, name, strlen(name))); } static ant_value_t builtin_createRequire_call(ant_t *js, ant_value_t *args, int nargs) { if (nargs < 1 || vtype(args[0]) != T_STR) return js_mkerr(js, "require() expects a string specifier"); ant_value_t fn = js_getcurrentfunc(js); ant_value_t data = js_get_slot(fn, SLOT_DATA); const char *base_path = js_module_eval_active_filename(js); if (vtype(data) == T_STR) { ant_offset_t plen = 0; ant_offset_t poff = vstr(js, data, &plen); base_path = (const char *)(uintptr_t)(poff); } ant_value_t ns = js_esm_import_sync_from(js, args[0], base_path); if (is_err(ns)) return ns; if (vtype(ns) == T_OBJ) { ant_value_t default_export = js_get_slot(ns, SLOT_DEFAULT); if (vtype(default_export) != T_UNDEF) return default_export; } return ns; } static ant_value_t resolve_strip_file_url(ant_t *js, ant_value_t resolved) { if (is_err(resolved) || vtype(resolved) != T_STR) return resolved; ant_offset_t len = 0; ant_offset_t off = vstr(js, resolved, &len); const char *s = (const char *)(uintptr_t)(off); static const char *prefix = "file://"; if ((size_t)len >= strlen(prefix) && strncmp(s, prefix, strlen(prefix)) == 0) { const char *path_part = s + strlen(prefix); size_t plen = (size_t)len - strlen(prefix); return js_mkstr(js, path_part, plen); } return resolved; } // require.resolve(specifier, options?) static ant_value_t builtin_createRequire_resolve(ant_t *js, ant_value_t *args, int nargs) { if (nargs < 1 || vtype(args[0]) != T_STR) return js_mkerr(js, "require.resolve() expects a string specifier"); ant_value_t fn = js_getcurrentfunc(js); ant_value_t data = js_get_slot(fn, SLOT_DATA); const char *base_path = js_module_eval_active_filename(js); if (vtype(data) == T_STR) { ant_offset_t dlen = 0; ant_offset_t doff = vstr(js, data, &dlen); base_path = (const char *)(uintptr_t)(doff); } ant_value_t paths_val = (nargs >= 2 && is_object_type(args[1])) ? js_get(js, args[1], "paths") : js_mkundef(); if (vtype(paths_val) != T_ARR) { ant_value_t resolved = js_esm_resolve_specifier(js, args[0], base_path); return resolve_strip_file_url(js, resolved); } ant_offset_t path_count = js_arr_len(js, paths_val); for (ant_offset_t i = 0; i < path_count; i++) { ant_value_t p = js_arr_get(js, paths_val, i); if (vtype(p) != T_STR) continue; char *dir = js_getstr(js, p, NULL); if (!dir) continue; ant_value_t resolved = js_esm_resolve_specifier(js, args[0], dir); if (!is_err(resolved) && vtype(resolved) == T_STR) return resolve_strip_file_url(js, resolved); } return js_mkerr(js, "Cannot resolve module"); } // createRequire(filename) static ant_value_t builtin_createRequire(ant_t *js, ant_value_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "createRequire() requires a filename argument"); ant_value_t filename_val = args[0]; if (vtype(filename_val) != T_STR) return js_mkerr(js, "createRequire() filename must be a string"); size_t fname_len; char *fname = js_getstr(js, filename_val, &fname_len); if (!fname) return js_mkerr(js, "createRequire() invalid filename"); const char *path = fname; size_t path_len = fname_len; static const char *file_prefix = "file://"; size_t prefix_len = strlen(file_prefix); if (path_len >= prefix_len && strncmp(path, file_prefix, prefix_len) == 0) { path += prefix_len; path_len -= prefix_len; } ant_value_t path_val = js_mkstr(js, path, path_len); ant_value_t require_fn = js_heavy_mkfun(js, builtin_createRequire_call, path_val); ant_value_t resolve_fn = js_heavy_mkfun(js, builtin_createRequire_resolve, path_val); js_set(js, require_fn, "resolve", resolve_fn); return require_fn; } // Module._resolveFilename(request, parent) static ant_value_t builtin_resolveFilename(ant_t *js, ant_value_t *args, int nargs) { if (nargs < 1 || vtype(args[0]) != T_STR) return js_mkerr(js, "Module._resolveFilename() requires a string request"); const char *base_path = js_module_eval_active_filename(js); if (nargs >= 2 && vtype(args[1]) == T_OBJ) { ant_value_t parent_filename = js_get(js, args[1], "filename"); if (vtype(parent_filename) == T_STR) { ant_offset_t plen = 0; ant_offset_t poff = vstr(js, parent_filename, &plen); base_path = (const char *)(uintptr_t)(poff); } } ant_value_t resolved = js_esm_resolve_specifier(js, args[0], base_path); if (is_err(resolved)) return resolved; if (vtype(resolved) != T_STR) return resolved; ant_offset_t len = 0; ant_offset_t off = vstr(js, resolved, &len); const char *s = (const char *)(uintptr_t)(off); static const char *prefix = "file://"; if ((size_t)len >= strlen(prefix) && strncmp(s, prefix, strlen(prefix)) == 0) { const char *path_part = s + strlen(prefix); size_t plen = (size_t)len - strlen(prefix); return js_mkstr(js, path_part, plen); } return resolved; } ant_value_t module_library(ant_t *js) { ant_value_t lib = js_mkobj(js); js_set(js, lib, "createRequire", js_mkfun(builtin_createRequire)); ant_value_t modules_arr = js_mkarr(js); builtin_iter_ctx_t ctx = { js, modules_arr }; ant_library_foreach(push_builtin_name, &ctx); js_set(js, lib, "builtinModules", modules_arr); js_set(js, lib, "_resolveFilename", js_mkfun(builtin_resolveFilename)); js_set_sym(js, lib, get_toStringTag_sym(), js_mkstr(js, "Module", 6)); return lib; }