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#include "jsi.h"
static void jsB_Function(js_State *J)
{
int i, top = js_gettop(J);
js_Buffer *sb = NULL;
const char *body;
js_Ast *parse;
js_Function *fun;
if (js_try(J)) {
js_free(J, sb);
jsP_freeparse(J);
js_throw(J);
}
/* p1, p2, ..., pn */
if (top > 2) {
for (i = 1; i < top - 1; ++i) {
if (i > 1)
js_putc(J, &sb, ',');
js_puts(J, &sb, js_tostring(J, i));
}
js_putc(J, &sb, ')');
js_putc(J, &sb, 0);
}
/* body */
body = js_isdefined(J, top - 1) ? js_tostring(J, top - 1) : "";
parse = jsP_parsefunction(J, "[string]", sb ? sb->s : NULL, body);
fun = jsC_compilefunction(J, parse);
js_endtry(J);
js_free(J, sb);
jsP_freeparse(J);
js_newfunction(J, fun, J->GE);
}
static void jsB_Function_prototype(js_State *J)
{
js_pushundefined(J);
}
static void Fp_toString(js_State *J)
{
js_Object *self = js_toobject(J, 0);
js_Buffer *sb = NULL;
int i;
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;
if (js_try(J)) {
js_free(J, sb);
js_throw(J);
}
js_puts(J, &sb, "function ");
js_puts(J, &sb, F->name);
js_putc(J, &sb, '(');
for (i = 0; i < F->numparams; ++i) {
if (i > 0) js_putc(J, &sb, ',');
js_puts(J, &sb, F->vartab[i]);
}
js_puts(J, &sb, ") { [byte code] }");
js_putc(J, &sb, 0);
js_pushstring(J, sb->s);
js_endtry(J);
js_free(J, sb);
} else if (self->type == JS_CCFUNCTION) {
if (js_try(J)) {
js_free(J, sb);
js_throw(J);
}
js_puts(J, &sb, "function ");
js_puts(J, &sb, self->u.c.name);
js_puts(J, &sb, "() { [native code] }");
js_putc(J, &sb, 0);
js_pushstring(J, sb->s);
js_endtry(J);
js_free(J, sb);
} else {
js_pushliteral(J, "function () { }");
}
}
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);
if (js_isnull(J, 2) || js_isundefined(J, 2)) {
n = 0;
} else {
n = js_getlength(J, 2);
if (n < 0)
n = 0;
for (i = 0; i < n; ++i)
js_getindex(J, 2, i);
}
js_call(J, n);
}
static void Fp_call(js_State *J)
{
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 callbound(js_State *J)
{
int top = js_gettop(J);
int i, fun, args, n;
fun = js_gettop(J);
js_currentfunction(J);
js_getproperty(J, fun, "__TargetFunction__");
js_getproperty(J, fun, "__BoundThis__");
args = js_gettop(J);
js_getproperty(J, fun, "__BoundArguments__");
n = js_getlength(J, args);
if (n < 0)
n = 0;
for (i = 0; i < n; ++i)
js_getindex(J, args, i);
js_remove(J, args);
for (i = 1; i < top; ++i)
js_copy(J, i);
js_call(J, n + top - 1);
}
static void constructbound(js_State *J)
{
int top = js_gettop(J);
int i, fun, args, n;
fun = js_gettop(J);
js_currentfunction(J);
js_getproperty(J, fun, "__TargetFunction__");
args = js_gettop(J);
js_getproperty(J, fun, "__BoundArguments__");
n = js_getlength(J, args);
if (n < 0)
n = 0;
for (i = 0; i < n; ++i)
js_getindex(J, args, i);
js_remove(J, args);
for (i = 1; i < top; ++i)
js_copy(J, i);
js_construct(J, n + top - 1);
}
static void Fp_bind(js_State *J)
{
int i, top = js_gettop(J);
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;
/* Reuse target function's prototype for HasInstance check. */
js_getproperty(J, 0, "prototype");
js_newcconstructor(J, callbound, constructbound, "[bind]", n);
/* 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);
}
void jsB_initfunction(js_State *J)
{
J->Function_prototype->u.c.name = "Function.prototype";
J->Function_prototype->u.c.function = jsB_Function_prototype;
J->Function_prototype->u.c.constructor = NULL;
J->Function_prototype->u.c.length = 0;
js_pushobject(J, J->Function_prototype);
{
jsB_propf(J, "Function.prototype.toString", Fp_toString, 2);
jsB_propf(J, "Function.prototype.apply", Fp_apply, 2);
jsB_propf(J, "Function.prototype.call", Fp_call, 1);
jsB_propf(J, "Function.prototype.bind", Fp_bind, 1);
}
js_newcconstructor(J, jsB_Function, jsB_Function, "Function", 1);
js_defglobal(J, "Function", JS_DONTENUM);
}
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