mirror of
https://github.com/ccxvii/mujs.git
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95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
#include "jsi.h"
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#include "jsobject.h"
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#include "jsbuiltin.h"
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static int jsB_new_Number(js_State *J, int n)
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{
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js_pushobject(J, jsR_newnumber(J, n > 0 ? js_tonumber(J, 0) : 0));
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return 1;
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}
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static int jsB_Number(js_State *J, int n)
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{
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js_pushnumber(J, n > 0 ? js_tonumber(J, 1) : 0);
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return 1;
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}
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static int Np_valueOf(js_State *J, int n)
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{
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js_Object *self = js_toobject(J, 0);
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if (self->type != JS_CNUMBER) jsR_throwTypeError(J, "not a number");
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js_pushnumber(J, self->u.number);
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return 1;
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}
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static int Np_toString(js_State *J, int n)
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{
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js_Object *self = js_toobject(J, 0);
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if (self->type != JS_CNUMBER) jsR_throwTypeError(J, "not a number");
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js_pushliteral(J, jsR_stringfromnumber(J, self->u.number));
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return 1;
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}
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static int Np_toFixed(js_State *J, int n)
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{
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char buf[40];
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js_Object *self = js_toobject(J, 0);
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int width = js_tonumber(J, 1);
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if (self->type != JS_CNUMBER) jsR_throwTypeError(J, "not a number");
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sprintf(buf, "%.*f", width, self->u.number);
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js_pushstring(J, buf);
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return 1;
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}
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static int Np_toExponential(js_State *J, int n)
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{
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char buf[40];
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js_Object *self = js_toobject(J, 0);
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int width = js_tonumber(J, 1);
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if (self->type != JS_CNUMBER) jsR_throwTypeError(J, "not a number");
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sprintf(buf, "%.*e", width, self->u.number);
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js_pushstring(J, buf);
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return 1;
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}
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static int Np_toPrecision(js_State *J, int n)
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{
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char buf[40];
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js_Object *self = js_toobject(J, 0);
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int width = js_tonumber(J, 1);
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if (self->type != JS_CNUMBER) jsR_throwTypeError(J, "not a number");
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sprintf(buf, "%.*g", width, self->u.number);
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js_pushstring(J, buf);
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return 1;
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}
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void jsB_initnumber(js_State *J)
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{
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J->Number_prototype->u.number = 0;
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js_pushobject(J, jsR_newcconstructor(J, jsB_Number, jsB_new_Number));
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{
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jsB_propn(J, "length", 1);
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js_pushobject(J, J->Number_prototype);
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{
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js_copy(J, -2);
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js_setproperty(J, -2, "constructor");
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jsB_propf(J, "valueOf", Np_valueOf, 0);
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jsB_propf(J, "toString", Np_toString, 0);
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jsB_propf(J, "toLocaleString", Np_toString, 0);
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jsB_propf(J, "toFixed", Np_toFixed, 1);
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jsB_propf(J, "toExponential", Np_toExponential, 1);
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jsB_propf(J, "toPrecision", Np_toPrecision, 1);
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}
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js_setproperty(J, -2, "prototype");
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jsB_propn(J, "MAX_VALUE", DBL_MAX);
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jsB_propn(J, "MIN_VALUE", DBL_MIN);
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jsB_propn(J, "NaN", NAN);
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jsB_propn(J, "NEGATIVE_INFINITY", -INFINITY);
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jsB_propn(J, "POSITIVE_INFINITY", INFINITY);
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}
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js_setglobal(J, "Number");
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}
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