DUK_INTERNAL duk_ret_t duk_bi_function_constructor(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk_hstring *h_sourcecode;
duk_idx_t nargs;
duk_idx_t i;
duk_small_uint_t comp_flags;
duk_hcompiledfunction *func;
duk_hobject *outer_lex_env;
duk_hobject *outer_var_env;
/* normal and constructor calls have identical semantics */
nargs = duk_get_top(ctx);
for (i = 0; i < nargs; i++) {
duk_to_string(ctx, i);
}
if (nargs == 0) {
duk_push_string(ctx, "");
duk_push_string(ctx, "");
} else if (nargs == 1) {
/* XXX: cover this with the generic >1 case? */
duk_push_string(ctx, "");
} else {
duk_insert(ctx, 0); /* [ arg1 ... argN-1 body] -> [body arg1 ... argN-1] */
duk_push_string(ctx, ",");
duk_insert(ctx, 1);
duk_join(ctx, nargs - 1);
}
/* [ body formals ], formals is comma separated list that needs to be parsed */
DUK_ASSERT_TOP(ctx, 2);
/* XXX: this placeholder is not always correct, but use for now.
* It will fail in corner cases; see test-dev-func-cons-args.js.
*/
duk_push_string(ctx, "function(");
duk_dup(ctx, 1);
duk_push_string(ctx, "){");
duk_dup(ctx, 0);
duk_push_string(ctx, "}");
duk_concat(ctx, 5);
/* [ body formals source ] */
DUK_ASSERT_TOP(ctx, 3);
/* strictness is not inherited, intentional */
comp_flags = DUK_JS_COMPILE_FLAG_FUNCEXPR;
duk_push_hstring_stridx(ctx, DUK_STRIDX_COMPILE); /* XXX: copy from caller? */ /* XXX: ignored now */
h_sourcecode = duk_require_hstring(ctx, -2);
duk_js_compile(thr,
(const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode),
(duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode),
comp_flags);
func = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
DUK_ASSERT(func != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) func));
/* [ body formals source template ] */
/* only outer_lex_env matters, as functions always get a new
* variable declaration environment.
*/
outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
duk_js_push_closure(thr, func, outer_var_env, outer_lex_env, 1 /*add_auto_proto*/);
/* [ body formals source template closure ] */
return 1;
}
/* Helper which can be called both directly and with duk_safe_call(). */
DUK_LOCAL duk_ret_t duk__do_compile(duk_context *ctx, void *udata) {
duk_hthread *thr = (duk_hthread *) ctx;
duk__compile_raw_args *comp_args;
duk_uint_t flags;
duk_small_uint_t comp_flags;
duk_hcompfunc *h_templ;
DUK_ASSERT_CTX_VALID(ctx);
DUK_ASSERT(udata != NULL);
/* Note: strictness is not inherited from the current Duktape/C
* context. Otherwise it would not be possible to compile
* non-strict code inside a Duktape/C activation (which is
* always strict now). See tests/api/test-eval-strictness.c
* for discussion.
*/
/* [ ... source? filename? ] (depends on flags) */
comp_args = (duk__compile_raw_args *) udata;
flags = comp_args->flags;
if (flags & DUK_COMPILE_NOFILENAME) {
/* Automatic filename: 'eval' or 'input'. */
duk_push_hstring_stridx(ctx, (flags & DUK_COMPILE_EVAL) ? DUK_STRIDX_EVAL : DUK_STRIDX_INPUT);
}
/* [ ... source? filename ] */
if (!comp_args->src_buffer) {
duk_hstring *h_sourcecode;
h_sourcecode = duk_get_hstring(ctx, -2);
if ((flags & DUK_COMPILE_NOSOURCE) || /* args incorrect */
(h_sourcecode == NULL)) { /* e.g. duk_push_string_file_raw() pushed undefined */
DUK_ERROR_TYPE(thr, DUK_STR_NO_SOURCECODE);
}
DUK_ASSERT(h_sourcecode != NULL);
comp_args->src_buffer = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode);
comp_args->src_length = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode);
}
DUK_ASSERT(comp_args->src_buffer != NULL);
/* XXX: unnecessary translation of flags */
comp_flags = 0;
if (flags & DUK_COMPILE_EVAL) {
comp_flags |= DUK_JS_COMPILE_FLAG_EVAL;
}
if (flags & DUK_COMPILE_FUNCTION) {
comp_flags |= DUK_JS_COMPILE_FLAG_EVAL |
DUK_JS_COMPILE_FLAG_FUNCEXPR;
}
if (flags & DUK_COMPILE_STRICT) {
comp_flags |= DUK_JS_COMPILE_FLAG_STRICT;
}
/* [ ... source? filename ] */
duk_js_compile(thr, comp_args->src_buffer, comp_args->src_length, comp_flags);
/* [ ... source? func_template ] */
if (flags & DUK_COMPILE_NOSOURCE) {
;
} else {
duk_remove_m2(ctx);
}
/* [ ... func_template ] */
h_templ = (duk_hcompfunc *) duk_known_hobject(ctx, -1);
duk_js_push_closure(thr,
h_templ,
thr->builtins[DUK_BIDX_GLOBAL_ENV],
thr->builtins[DUK_BIDX_GLOBAL_ENV],
1 /*add_auto_proto*/);
duk_remove_m2(ctx); /* -> [ ... closure ] */
/* [ ... closure ] */
return 1;
}
/* Helper which can be called both directly and with duk_safe_call(). */
DUK_LOCAL duk_ret_t duk__do_compile(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
duk__compile_raw_args *comp_args;
duk_uint_t flags;
duk_small_uint_t comp_flags;
duk_hcompiledfunction *h_templ;
/* Note: strictness is not inherited from the current Duktape/C
* context. Otherwise it would not be possible to compile
* non-strict code inside a Duktape/C activation (which is
* always strict now). See api-testcases/test-eval-strictness.c
* for discussion.
*/
/* [ ... source? filename &comp_args ] (depends on flags) */
comp_args = (duk__compile_raw_args *) duk_require_pointer(ctx, -1);
flags = comp_args->flags;
duk_pop(ctx);
/* [ ... source? filename ] */
if (!comp_args->src_buffer) {
duk_hstring *h_sourcecode;
h_sourcecode = duk_get_hstring(ctx, -2);
if ((flags & DUK_COMPILE_NOSOURCE) || /* args incorrect */
(h_sourcecode == NULL)) { /* e.g. duk_push_file_string_raw() pushed undefined */
/* XXX: when this error is caused by a nonexistent
* file given to duk_peval_file() or similar, the
* error message is not the best possible.
*/
DUK_ERROR(thr, DUK_ERR_API_ERROR, DUK_STR_NO_SOURCECODE);
}
DUK_ASSERT(h_sourcecode != NULL);
comp_args->src_buffer = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode);
comp_args->src_length = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode);
}
DUK_ASSERT(comp_args->src_buffer != NULL);
/* XXX: unnecessary translation of flags */
comp_flags = 0;
if (flags & DUK_COMPILE_EVAL) {
comp_flags |= DUK_JS_COMPILE_FLAG_EVAL;
}
if (flags & DUK_COMPILE_FUNCTION) {
comp_flags |= DUK_JS_COMPILE_FLAG_EVAL |
DUK_JS_COMPILE_FLAG_FUNCEXPR;
}
if (flags & DUK_COMPILE_STRICT) {
comp_flags |= DUK_JS_COMPILE_FLAG_STRICT;
}
/* [ ... source? filename ] */
duk_js_compile(thr, comp_args->src_buffer, comp_args->src_length, comp_flags);
/* [ ... source? func_template ] */
if (flags & DUK_COMPILE_NOSOURCE) {
;
} else {
duk_remove(ctx, -2);
}
/* [ ... func_template ] */
h_templ = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
DUK_ASSERT(h_templ != NULL);
duk_js_push_closure(thr,
h_templ,
thr->builtins[DUK_BIDX_GLOBAL_ENV],
thr->builtins[DUK_BIDX_GLOBAL_ENV]);
duk_remove(ctx, -2); /* -> [ ... closure ] */
/* [ ... closure ] */
return 1;
}
int duk_bi_function_constructor(duk_context *ctx) {
duk_hthread *thr = (duk_hthread *) ctx;
int num_args;
int i;
int comp_flags;
duk_hcompiledfunction *func;
duk_hobject *outer_lex_env;
duk_hobject *outer_var_env;
/* normal and constructor calls have identical semantics */
num_args = duk_get_top(ctx);
for (i = 0; i < num_args; i++) {
duk_to_string(ctx, i);
}
if (num_args == 0) {
duk_push_string(ctx, "");
duk_push_string(ctx, "");
} else if (num_args == 1) {
duk_push_string(ctx, "");
} else {
duk_insert(ctx, 0); /* [ arg1 ... argN-1 body] -> [body arg1 ... argN-1] */
duk_push_string(ctx, ",");
duk_insert(ctx, 1);
duk_join(ctx, num_args - 1);
}
/* [ body formals ], formals is comma separated list that needs to be parsed */
DUK_ASSERT_TOP(ctx, 2);
/* FIXME: this placeholder is not always correct, but use for now.
* It will fail in corner cases; see test-dev-func-cons-args.js.
*/
duk_push_string(ctx, "function(");
duk_dup(ctx, 1);
duk_push_string(ctx, "){");
duk_dup(ctx, 0);
duk_push_string(ctx, "}");
duk_concat(ctx, 5);
DUK_ASSERT_TOP(ctx, 3);
/* FIXME: uses internal API */
/* strictness is not inherited, intentional */
comp_flags = DUK_JS_COMPILE_FLAG_FUNCEXPR;
duk_push_hstring_stridx(ctx, DUK_STRIDX_COMPILE); /* XXX: copy from caller? */
duk_js_compile(thr, comp_flags);
func = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
DUK_ASSERT(func != NULL);
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) func));
/* only outer_lex_env matters, as functions always get a new
* variable declaration environment.
*/
outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
duk_js_push_closure(thr, func, outer_var_env, outer_lex_env);
return 1;
}