static void Ap_forEach(js_State *J)
{
int hasthis = js_gettop(J) >= 3;
int k, len;
if (!js_iscallable(J, 1))
js_typeerror(J, "callback is not a function");
len = js_getlength(J, 0);
for (k = 0; k < len; ++k) {
if (js_hasindex(J, 0, k)) {
js_copy(J, 1);
if (hasthis)
js_copy(J, 2);
else
js_pushundefined(J);
js_copy(J, -3);
js_pushnumber(J, k);
js_copy(J, 0);
js_call(J, 3);
js_pop(J, 2);
}
}
js_pushundefined(J);
}
static int compare(js_State *J, unsigned int x, unsigned int y, int *hasx, int *hasy, int hasfn)
{
const char *sx, *sy;
int c;
*hasx = js_hasindex(J, 0, x);
*hasy = js_hasindex(J, 0, y);
if (*hasx && *hasy) {
int unx = js_isundefined(J, -2);
int uny = js_isundefined(J, -1);
if (unx && uny) return 0;
if (unx) return 1;
if (uny) return -1;
if (hasfn) {
js_copy(J, 1); /* copy function */
js_pushundefinedthis(J); /* set this object */
js_copy(J, -4); /* copy x */
js_copy(J, -4); /* copy y */
js_call(J, 2);
c = js_tonumber(J, -1);
js_pop(J, 1);
return c;
}
sx = js_tostring(J, -2);
sy = js_tostring(J, -1);
return strcmp(sx, sy);
}
if (*hasx) return -1;
if (*hasy) return 1;
return 0;
}
static void Ap_filter(js_State *J)
{
int hasthis = js_gettop(J) >= 3;
int k, to, len;
if (!js_iscallable(J, 1))
js_typeerror(J, "callback is not a function");
js_newarray(J);
to = 0;
len = js_getlength(J, 0);
for (k = 0; k < len; ++k) {
if (js_hasindex(J, 0, k)) {
js_copy(J, 1);
if (hasthis)
js_copy(J, 2);
else
js_pushundefined(J);
js_copy(J, -3);
js_pushnumber(J, k);
js_copy(J, 0);
js_call(J, 3);
if (js_toboolean(J, -1)) {
js_pop(J, 1);
js_setindex(J, -2, to++);
} else {
js_pop(J, 2);
}
}
}
}
static void Sp_replace_string(js_State *J)
{
const char *source, *needle, *s, *r;
js_Buffer *sb = NULL;
int n;
source = js_tostring(J, 0);
needle = js_tostring(J, 1);
s = strstr(source, needle);
if (!s) {
js_copy(J, 0);
return;
}
n = strlen(needle);
if (js_iscallable(J, 2)) {
js_copy(J, 2);
js_pushglobal(J);
js_pushlstring(J, s, n); /* arg 1: substring that matched */
js_pushnumber(J, s - source); /* arg 2: offset within search string */
js_copy(J, 0); /* arg 3: search string */
js_call(J, 3);
r = js_tostring(J, -1);
js_putm(J, &sb, source, s);
js_puts(J, &sb, r);
js_puts(J, &sb, s + n);
js_putc(J, &sb, 0);
js_pop(J, 1);
} else {
r = js_tostring(J, 2);
js_putm(J, &sb, source, s);
while (*r) {
if (*r == '$') {
switch (*(++r)) {
case '$': js_putc(J, &sb, '$'); break;
case '&': js_putm(J, &sb, s, s + n); break;
case '`': js_putm(J, &sb, source, s); break;
case '\'': js_puts(J, &sb, s + n); break;
default: js_putc(J, &sb, '$'); js_putc(J, &sb, *r); break;
}
++r;
} else {
js_putc(J, &sb, *r++);
}
}
js_puts(J, &sb, s + n);
js_putc(J, &sb, 0);
}
if (js_try(J)) {
js_free(J, sb);
js_throw(J);
}
js_pushstring(J, sb ? sb->s : "");
js_endtry(J);
js_free(J, sb);
}
static void Ap_sort(js_State *J)
{
struct sortslot *array = NULL;
int i, n, len;
len = js_getlength(J, 0);
if (len <= 0) {
js_copy(J, 0);
return;
}
if (len >= INT_MAX / (int)sizeof(*array))
js_rangeerror(J, "array is too large to sort");
array = js_malloc(J, len * sizeof *array);
/* Holding objects where the GC cannot see them is illegal, but if we
* don't allow the GC to run we can use qsort() on a temporary array of
* js_Values for fast sorting.
*/
++J->gcpause;
if (js_try(J)) {
--J->gcpause;
js_free(J, array);
js_throw(J);
}
n = 0;
for (i = 0; i < len; ++i) {
if (js_hasindex(J, 0, i)) {
array[n].v = *js_tovalue(J, -1);
array[n].J = J;
js_pop(J, 1);
++n;
}
}
qsort(array, n, sizeof *array, sortcmp);
for (i = 0; i < n; ++i) {
js_pushvalue(J, array[i].v);
js_setindex(J, 0, i);
}
for (i = n; i < len; ++i) {
js_delindex(J, 0, i);
}
--J->gcpause;
js_endtry(J);
js_free(J, array);
js_copy(J, 0);
}
static void wrapgetter(js_State *J)
{
pdf_jsimp_obj *ret;
pdf_jsimp_getter *get;
const char *type;
void *jsctx;
void *obj;
js_getregistry(J, "jsctx");
jsctx = js_touserdata(J, "jsctx", -1);
js_pop(J, 1);
js_currentfunction(J);
{
js_getproperty(J, -1, "__get");
get = js_touserdata(J, "getter", -1);
js_pop(J, 1);
js_getproperty(J, -1, "__type");
type = js_tostring(J, -1);
js_pop(J, 1);
}
js_pop(J, 1);
if (js_isuserdata(J, type, 0))
obj = js_touserdata(J, type, 0);
else
obj = NULL;
ret = get(jsctx, obj);
if (ret)
js_copy(J, IDX(ret));
else
js_pushundefined(J);
}
static int sortcmp(const void *avoid, const void *bvoid)
{
const struct sortslot *aslot = avoid, *bslot = bvoid;
const js_Value *a = &aslot->v, *b = &bslot->v;
js_State *J = aslot->J;
const char *sx, *sy;
int c;
int unx = (a->type == JS_TUNDEFINED);
int uny = (b->type == JS_TUNDEFINED);
if (unx) return !uny;
if (uny) return -1;
if (js_iscallable(J, 1)) {
js_copy(J, 1); /* copy function */
js_pushundefined(J);
js_pushvalue(J, *a);
js_pushvalue(J, *b);
js_call(J, 2);
c = js_tonumber(J, -1);
js_pop(J, 1);
} else {
js_pushvalue(J, *a);
js_pushvalue(J, *b);
sx = js_tostring(J, -2);
sy = js_tostring(J, -1);
c = strcmp(sx, sy);
js_pop(J, 2);
}
return c;
}
static void Ap_reverse(js_State *J)
{
unsigned int len, middle, lower;
len = js_getlength(J, 0);
middle = len / 2;
lower = 0;
while (lower != middle) {
unsigned int upper = len - lower - 1;
int haslower = js_hasindex(J, 0, lower);
int hasupper = js_hasindex(J, 0, upper);
if (haslower && hasupper) {
js_setindex(J, 0, lower);
js_setindex(J, 0, upper);
} else if (hasupper) {
js_setindex(J, 0, lower);
js_delindex(J, 0, upper);
} else if (haslower) {
js_setindex(J, 0, upper);
js_delindex(J, 0, lower);
}
++lower;
}
js_copy(J, 0);
}
static void js_setvar(js_State *J, const char *name)
{
js_Environment *E = J->E;
do {
js_Property *ref = jsV_getproperty(J, E->variables, name);
if (ref) {
if (ref->setter) {
js_pushobject(J, ref->setter);
js_pushobject(J, E->variables);
js_copy(J, -3);
js_call(J, 1);
js_pop(J, 1);
return;
}
if (!(ref->atts & JS_READONLY))
ref->value = *stackidx(J, -1);
else if (J->strict)
js_typeerror(J, "'%s' is read-only", name);
return;
}
E = E->outer;
} while (E);
if (J->strict)
js_referenceerror(J, "assignment to undeclared variable '%s'", name);
jsR_setproperty(J, J->G, name, stackidx(J, -1));
}
static void Fp_apply(js_State *J)
{
int i, n;
if (!js_iscallable(J, 0))
js_typeerror(J, "not a function");
js_copy(J, 0);
js_copy(J, 1);
n = js_getlength(J, 2);
for (i = 0; i < n; ++i)
js_getindex(J, 2, i);
js_call(J, n);
}
static void O_preventExtensions(js_State *J)
{
if (!js_isobject(J, 1))
js_typeerror(J, "not an object");
js_toobject(J, 1)->extensible = 0;
js_copy(J, 1);
}
static void O_defineProperty(js_State *J)
{
if (!js_isobject(J, 1)) js_typeerror(J, "not an object");
if (!js_isobject(J, 3)) js_typeerror(J, "not an object");
ToPropertyDescriptor(J, js_toobject(J, 1), js_tostring(J, 2), js_toobject(J, 3));
js_copy(J, 1);
}
static void Ap_unshift(js_State *J)
{
unsigned int i, top = js_gettop(J);
unsigned int k, len;
len = js_getlength(J, 0);
for (k = len; k > 0; --k) {
int from = k - 1;
int to = k + top - 2;
if (js_hasindex(J, 0, from))
js_setindex(J, 0, to);
else
js_delindex(J, 0, to);
}
for (i = 1; i < top; ++i) {
js_copy(J, i);
js_setindex(J, 0, i - 1);
}
js_setlength(J, 0, len + top - 1);
js_pushnumber(J, len + top - 1);
}
static void Ap_sort(js_State *J)
{
unsigned int len, i, k;
int hasx, hasy, hasfn;
len = js_getlength(J, 0);
hasfn = js_iscallable(J, 1);
for (i = 1; i < len; ++i) {
k = i;
while (k > 0 && compare(J, k - 1, k, &hasx, &hasy, hasfn) > 0) {
if (hasx && hasy) {
js_setindex(J, 0, k - 1);
js_setindex(J, 0, k);
} else if (hasx) {
js_delindex(J, 0, k - 1);
js_setindex(J, 0, k);
} else if (hasy) {
js_setindex(J, 0, k - 1);
js_delindex(J, 0, k);
}
--k;
}
}
js_copy(J, 0);
}
void js_eval(js_State *J)
{
if (!js_isstring(J, -1))
return;
js_loadeval(J, "(eval)", js_tostring(J, -1));
js_rot2pop1(J);
js_copy(J, 0); /* copy 'this' */
js_call(J, 0);
}
static void jsB_eval(js_State *J)
{
if (!js_isstring(J, -1)) {
js_copy(J, 1);
return;
}
js_loadstring(J, "(eval)", js_tostring(J, -1));
js_pushglobal(J);
js_call(J, 0);
}
static void Sp_split(js_State *J)
{
if (js_isundefined(J, 1)) {
js_newarray(J);
js_copy(J, 0);
js_setindex(J, -2, 0);
} else if (js_isregexp(J, 1)) {
Sp_split_regexp(J);
} else {
Sp_split_string(J);
}
}
static void Fp_call(js_State *J)
{
unsigned int i, top = js_gettop(J);
if (!js_iscallable(J, 0))
js_typeerror(J, "not a function");
for (i = 0; i < top; ++i)
js_copy(J, i);
js_call(J, top - 2);
}
static void jsB_new_Array(js_State *J)
{
unsigned int i, top = js_gettop(J);
js_newarray(J);
if (top == 2) {
if (js_isnumber(J, 1)) {
js_copy(J, 1);
js_setproperty(J, -2, "length");
} else {
js_copy(J, 1);
js_setindex(J, -2, 0);
}
} else {
for (i = 1; i < top; ++i) {
js_copy(J, i);
js_setindex(J, -2, i - 1);
}
}
}
static void Ap_reduceRight(js_State *J)
{
int hasinitial = js_gettop(J) >= 3;
int k, len;
if (!js_iscallable(J, 1))
js_typeerror(J, "callback is not a function");
len = js_getlength(J, 0);
k = len - 1;
if (len == 0 && !hasinitial)
js_typeerror(J, "no initial value");
/* initial value of accumulator */
if (hasinitial)
js_copy(J, 2);
else {
while (k >= 0)
if (js_hasindex(J, 0, k--))
break;
if (k < 0)
js_typeerror(J, "no initial value");
}
while (k >= 0) {
if (js_hasindex(J, 0, k)) {
js_copy(J, 1);
js_pushundefined(J);
js_rot(J, 4); /* accumulator on top */
js_rot(J, 4); /* property on top */
js_pushnumber(J, k);
js_copy(J, 0);
js_call(J, 4); /* calculate new accumulator */
}
--k;
}
/* return accumulator */
}
static void Ap_splice(js_State *J)
{
unsigned int top = js_gettop(J);
unsigned int len, start, del, add, k;
double f;
js_newarray(J);
len = js_getlength(J, 0);
f = js_tointeger(J, 1);
if (f < 0) f = f + len;
start = f < 0 ? 0 : f > len ? len : f;
f = js_tointeger(J, 2);
del = f < 0 ? 0 : f > len - start ? len - start : f;
/* copy deleted items to return array */
for (k = 0; k < del; ++k)
if (js_hasindex(J, 0, start + k))
js_setindex(J, -2, k);
js_setlength(J, -1, del);
/* shift the tail to resize the hole left by deleted items */
add = top - 3;
if (add < del) {
for (k = start; k < len - del; ++k) {
if (js_hasindex(J, 0, k + del))
js_setindex(J, 0, k + add);
else
js_delindex(J, 0, k + add);
}
for (k = len; k > len - del + add; --k)
js_delindex(J, 0, k - 1);
} else if (add > del) {
for (k = len - del; k > start; --k) {
if (js_hasindex(J, 0, k + del - 1))
js_setindex(J, 0, k + add - 1);
else
js_delindex(J, 0, k + add - 1);
}
}
/* copy new items into the hole */
for (k = 0; k < add; ++k) {
js_copy(J, 3 + k);
js_setindex(J, 0, start + k);
}
js_setlength(J, 0, len - del + add);
}
/* prototype -- constructor */
void js_newcconstructor(js_State *J, js_CFunction cfun, js_CFunction ccon, unsigned int length)
{
js_Object *obj = jsV_newobject(J, JS_CCFUNCTION, J->Function_prototype);
obj->u.c.function = cfun;
obj->u.c.constructor = ccon;
js_pushobject(J, obj); /* proto obj */
{
js_pushnumber(J, length);
js_defproperty(J, -2, "length", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
js_rot2(J); /* obj proto */
js_copy(J, -2); /* obj proto obj */
js_defproperty(J, -2, "constructor", JS_DONTENUM);
js_defproperty(J, -2, "prototype", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
}
}
static void Fp_bind(js_State *J)
{
unsigned int i, top = js_gettop(J);
unsigned int n;
if (!js_iscallable(J, 0))
js_typeerror(J, "not a function");
n = js_getlength(J, 0);
if (n > top - 2)
n -= top - 2;
else
n = 0;
js_newcconstructor(J, callbound, constructbound, "[bind]", n);
/* Reuse target function's prototype for HasInstance check. */
js_getproperty(J, 0, "prototype");
js_defproperty(J, -2, "prototype", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
/* target function */
js_copy(J, 0);
js_defproperty(J, -2, "__TargetFunction__", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
/* bound this */
js_copy(J, 1);
js_defproperty(J, -2, "__BoundThis__", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
/* bound arguments */
js_newarray(J);
for (i = 2; i < top; ++i) {
js_copy(J, i);
js_setindex(J, -2, i - 2);
}
js_defproperty(J, -2, "__BoundArguments__", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
}
static void O_freeze(js_State *J)
{
js_Object *obj;
js_Property *ref;
if (!js_isobject(J, 1))
js_typeerror(J, "not an object");
obj = js_toobject(J, 1);
obj->extensible = 0;
for (ref = obj->head; ref; ref = ref->next)
ref->atts |= JS_READONLY | JS_DONTCONF;
js_copy(J, 1);
}
static void Ap_push(js_State *J)
{
unsigned int i, top = js_gettop(J);
unsigned int n;
n = js_getlength(J, 0);
for (i = 1; i < top; ++i, ++n) {
js_copy(J, i);
js_setindex(J, 0, n);
}
js_setlength(J, 0, n);
js_pushnumber(J, n);
}
void js_newfunction(js_State *J, js_Function *fun, js_Environment *scope)
{
js_Object *obj = jsV_newobject(J, JS_CFUNCTION, J->Function_prototype);
obj->u.f.function = fun;
obj->u.f.scope = scope;
js_pushobject(J, obj);
{
js_pushnumber(J, fun->numparams);
js_defproperty(J, -2, "length", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
js_newobject(J);
{
js_copy(J, -2);
js_defproperty(J, -2, "constructor", JS_DONTENUM);
}
js_defproperty(J, -2, "prototype", JS_DONTCONF);
}
}
static void Sp_match(js_State *J)
{
js_Regexp *re;
const char *text;
unsigned int len;
const char *a, *b, *c, *e;
Resub m;
text = js_tostring(J, 0);
if (js_isregexp(J, 1))
js_copy(J, 1);
else if (js_isundefined(J, 1))
js_newregexp(J, "", 0);
else
js_newregexp(J, js_tostring(J, 1), 0);
re = js_toregexp(J, -1);
if (!(re->flags & JS_REGEXP_G)) {
js_RegExp_prototype_exec(J, re, text);
return;
}
re->last = 0;
js_newarray(J);
len = 0;
a = text;
e = text + strlen(text);
while (a <= e) {
if (js_regexec(re->prog, a, &m, a > text ? REG_NOTBOL : 0))
break;
b = m.sub[0].sp;
c = m.sub[0].ep;
js_pushlstring(J, b, c - b);
js_setindex(J, -2, len++);
a = c;
if (c - b == 0)
++a;
}
}
static void wrapmethod(js_State *J)
{
pdf_jsimp_obj *args[MAXARGS];
pdf_jsimp_obj *ret;
pdf_jsimp_method *meth;
const char *type;
void *jsctx;
void *obj;
int i;
int argc = js_gettop(J) - 1;
js_getregistry(J, "jsctx");
jsctx = js_touserdata(J, "jsctx", -1);
js_pop(J, 1);
js_currentfunction(J);
{
js_getproperty(J, -1, "__call");
meth = js_touserdata(J, "method", -1);
js_pop(J, 1);
js_getproperty(J, -1, "__type");
type = js_tostring(J, -1);
js_pop(J, 1);
}
js_pop(J, 1);
if (js_isuserdata(J, type, 0))
obj = js_touserdata(J, type, 0);
else
obj = NULL;
if (argc > MAXARGS)
js_rangeerror(J, "too many arguments");
for (i = 0; i < argc; ++i)
args[i] = OBJ(i+1);
ret = meth(jsctx, obj, argc, args);
if (ret)
js_copy(J, IDX(ret));
else
js_pushundefined(J);
}
static void O_defineProperties(js_State *J)
{
js_Object *props;
js_Property *ref;
if (!js_isobject(J, 1)) js_typeerror(J, "not an object");
if (!js_isobject(J, 2)) js_typeerror(J, "not an object");
props = js_toobject(J, 2);
for (ref = props->head; ref; ref = ref->next) {
if (!(ref->atts & JS_DONTENUM)) {
js_pushvalue(J, ref->value);
ToPropertyDescriptor(J, js_toobject(J, 1), ref->name, js_toobject(J, -1));
js_pop(J, 1);
}
}
js_copy(J, 1);
}
static void jsR_callfunction(js_State *J, unsigned int n, js_Function *F, js_Environment *scope)
{
js_Value v;
unsigned int i;
scope = jsR_newenvironment(J, jsV_newobject(J, JS_COBJECT, NULL), scope);
jsR_savescope(J, scope);
if (F->arguments) {
js_newobject(J);
if (!J->strict) {
js_currentfunction(J);
js_defproperty(J, -2, "callee", JS_DONTENUM);
}
js_pushnumber(J, n);
js_defproperty(J, -2, "length", JS_DONTENUM);
for (i = 0; i < n; ++i) {
js_copy(J, i + 1);
js_setindex(J, -2, i);
}
js_initvar(J, "arguments", -1);
js_pop(J, 1);
}
for (i = 0; i < F->numparams; ++i) {
if (i < n)
js_initvar(J, F->vartab[i], i + 1);
else {
js_pushundefined(J);
js_initvar(J, F->vartab[i], -1);
js_pop(J, 1);
}
}
js_pop(J, n);
jsR_run(J, F);
v = *stackidx(J, -1);
TOP = --BOT; /* clear stack */
js_pushvalue(J, v);
jsR_restorescope(J);
}
