void js_call(js_State *J, int n)
{
js_Object *obj;
int savebot;
if (!js_iscallable(J, -n-2))
js_typeerror(J, "called object is not a function");
obj = js_toobject(J, -n-2);
savebot = BOT;
BOT = TOP - n - 1;
if (obj->type == JS_CFUNCTION) {
jsR_pushtrace(J, obj->u.f.function->name, obj->u.f.function->filename, obj->u.f.function->line);
if (obj->u.f.function->lightweight)
jsR_calllwfunction(J, n, obj->u.f.function, obj->u.f.scope);
else
jsR_callfunction(J, n, obj->u.f.function, obj->u.f.scope);
--J->tracetop;
} else if (obj->type == JS_CSCRIPT) {
jsR_pushtrace(J, obj->u.f.function->name, obj->u.f.function->filename, obj->u.f.function->line);
jsR_callscript(J, n, obj->u.f.function, obj->u.f.scope);
--J->tracetop;
} else if (obj->type == JS_CCFUNCTION) {
jsR_pushtrace(J, obj->u.c.name, "[C]", 0);
jsR_callcfunction(J, n, obj->u.c.length, obj->u.c.function);
--J->tracetop;
}
BOT = savebot;
}
static void Fp_toString(js_State *J)
{
js_Object *self = js_toobject(J, 0);
char *s;
unsigned int i, n;
if (!js_iscallable(J, 0))
js_typeerror(J, "not a function");
if (self->type == JS_CFUNCTION || self->type == JS_CSCRIPT) {
js_Function *F = self->u.f.function;
n = strlen("function () { ... }");
n += strlen(F->name);
for (i = 0; i < F->numparams; ++i)
n += strlen(F->vartab[i]) + 1;
s = js_malloc(J, n);
strcpy(s, "function ");
strcat(s, F->name);
strcat(s, "(");
for (i = 0; i < F->numparams; ++i) {
if (i > 0) strcat(s, ",");
strcat(s, F->vartab[i]);
}
strcat(s, ") { ... }");
if (js_try(J)) {
js_free(J, s);
js_throw(J);
}
js_pushstring(J, s);
js_free(J, s);
js_endtry(J);
} else {
js_pushliteral(J, "function () { ... }");
}
}
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 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 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);
}
int js_instanceof(js_State *J)
{
js_Object *O, *V;
if (!js_iscallable(J, -1))
js_typeerror(J, "instanceof: invalid operand");
if (!js_isobject(J, -2))
return 0;
js_getproperty(J, -1, "prototype");
if (!js_isobject(J, -1))
js_typeerror(J, "instanceof: 'prototype' property is not an object");
O = js_toobject(J, -1);
js_pop(J, 1);
V = js_toobject(J, -2);
while (V) {
V = V->prototype;
if (O == V)
return 1;
}
return 0;
}
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 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 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);
}
void js_construct(js_State *J, int n)
{
js_Object *obj;
js_Object *prototype;
js_Object *newobj;
if (!js_iscallable(J, -n-1))
js_typeerror(J, "called object is not a function");
obj = js_toobject(J, -n-1);
/* built-in constructors create their own objects, give them a 'null' this */
if (obj->type == JS_CCFUNCTION && obj->u.c.constructor) {
int savebot = BOT;
js_pushnull(J);
if (n > 0)
js_rot(J, n + 1);
BOT = TOP - n - 1;
jsR_pushtrace(J, obj->u.c.name, "[C]", 0);
jsR_callcfunction(J, n, obj->u.c.length, obj->u.c.constructor);
--J->tracetop;
BOT = savebot;
return;
}
/* extract the function object's prototype property */
js_getproperty(J, -n - 1, "prototype");
if (js_isobject(J, -1))
prototype = js_toobject(J, -1);
else
prototype = J->Object_prototype;
js_pop(J, 1);
/* create a new object with above prototype, and shift it into the 'this' slot */
newobj = jsV_newobject(J, JS_COBJECT, prototype);
js_pushobject(J, newobj);
if (n > 0)
js_rot(J, n + 1);
/* call the function */
js_call(J, n);
/* if result is not an object, return the original object we created */
if (!js_isobject(J, -1)) {
js_pop(J, 1);
js_pushobject(J, newobj);
}
}
/* obj.valueOf() */
static int jsV_valueOf(js_State *J, js_Object *obj)
{
js_pushobject(J, obj);
js_getproperty(J, -1, "valueOf");
if (js_iscallable(J, -1)) {
js_rot2(J);
js_call(J, 0);
if (js_isprimitive(J, -1))
return 1;
js_pop(J, 1);
return 0;
}
js_pop(J, 2);
return 0;
}
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 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 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 Sp_replace_regexp(js_State *J)
{
js_Regexp *re;
const char *source, *s, *r;
js_Buffer *sb = NULL;
unsigned int n, x;
Resub m;
source = js_tostring(J, 0);
re = js_toregexp(J, 1);
if (js_regexec(re->prog, source, &m, 0)) {
js_copy(J, 0);
return;
}
re->last = 0;
loop:
s = m.sub[0].sp;
n = m.sub[0].ep - m.sub[0].sp;
if (js_iscallable(J, 2)) {
js_copy(J, 2);
js_pushglobal(J);
for (x = 0; m.sub[x].sp; ++x) /* arg 0..x: substring and subexps that matched */
js_pushlstring(J, m.sub[x].sp, m.sub[x].ep - m.sub[x].sp);
js_pushnumber(J, s - source); /* arg x+2: offset within search string */
js_copy(J, 0); /* arg x+3: search string */
js_call(J, 2 + x);
r = js_tostring(J, -1);
js_putm(J, &sb, source, s);
js_puts(J, &sb, r);
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, '$'); break;
case '`': js_putm(J, &sb, source, s); break;
case '\'': js_puts(J, &sb, s + n); break;
case '&':
js_putm(J, &sb, s, s + n);
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
x = *r - '0';
if (r[1] >= '0' && r[1] <= '9')
x = x * 10 + *(++r) - '0';
if (x > 0 && x < m.nsub) {
js_putm(J, &sb, m.sub[x].sp, m.sub[x].ep);
} else {
js_putc(J, &sb, '$');
if (x > 10) {
js_putc(J, &sb, '0' + x / 10);
js_putc(J, &sb, '0' + x % 10);
} else {
js_putc(J, &sb, '0' + x);
}
}
break;
default:
js_putc(J, &sb, '$');
js_putc(J, &sb, *r);
break;
}
++r;
} else {
js_putc(J, &sb, *r++);
}
}
}
if (re->flags & JS_REGEXP_G) {
source = m.sub[0].ep;
if (n == 0) {
if (*source)
js_putc(J, &sb, *source++);
else
goto end;
}
if (!js_regexec(re->prog, source, &m, REG_NOTBOL))
goto loop;
}
end:
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);
}
