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Code Issues Releases Wiki Activity

Added random number helpers

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This commit is contained in:
Bryan Roe
2019-04-15 14:11:23 -07:00
parent 094918c400
commit 70e7836db1
2 changed files with 34 additions and 27 deletions
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28
microscript/ILibDuktape_Polyfills.c
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@@ -1747,6 +1747,15 @@ duk_ret_t ILibDuktape_bignum_mod(duk_context* ctx)
ILibDuktape_bignum_addBigNumMethods(ctx, ret);
return(1);
}
duk_ret_t ILibDuktape_bignum_cmp(duk_context *ctx)
{
BIGNUM *r1, *r2;
duk_push_this(ctx);
r1 = (BIGNUM*)Duktape_GetPointerProperty(ctx, -1, "\xFF_BIGNUM");
r2 = (BIGNUM*)Duktape_GetPointerProperty(ctx, 0, "\xFF_BIGNUM");
duk_push_int(ctx, BN_cmp(r2, r1));
return(1);
}
duk_ret_t ILibDuktape_bignum_finalizer(duk_context *ctx)
{
@@ -1767,9 +1776,20 @@ void ILibDuktape_bignum_addBigNumMethods(duk_context *ctx, BIGNUM *b)
ILibDuktape_CreateInstanceMethod(ctx, "mul", ILibDuktape_bignum_mul, 1);
ILibDuktape_CreateInstanceMethod(ctx, "div", ILibDuktape_bignum_div, 1);
ILibDuktape_CreateInstanceMethod(ctx, "mod", ILibDuktape_bignum_mod, 1);
ILibDuktape_CreateInstanceMethod(ctx, "cmp", ILibDuktape_bignum_cmp, 1);
duk_push_c_function(ctx, ILibDuktape_bignum_finalizer, 1); duk_set_finalizer(ctx, -2);
duk_eval_string(ctx, "(function toNumber(){return(parseInt(this.toString()));})"); duk_put_prop_string(ctx, -2, "toNumber");
}
duk_ret_t ILibDuktape_bignum_random(duk_context *ctx)
{
BIGNUM *r = (BIGNUM*)Duktape_GetPointerProperty(ctx, 0, "\xFF_BIGNUM");
BIGNUM *rnd = BN_new();
if (BN_rand_range(rnd, r) == 0) { return(ILibDuktape_Error(ctx, "Error Generating Random Number")); }
ILibDuktape_bignum_addBigNumMethods(ctx, rnd);
return(1);
}
duk_ret_t ILibDuktape_bignum_fromBuffer(duk_context *ctx)
{
char *endian = duk_get_top(ctx) > 1 ? Duktape_GetStringPropertyValue(ctx, 1, "endian", "big") : "big";
@@ -1805,6 +1825,14 @@ void ILibDuktape_bignum_Push(duk_context *ctx, void *chain)
{
duk_push_c_function(ctx, ILibDuktape_bignum_func, DUK_VARARGS);
duk_push_c_function(ctx, ILibDuktape_bignum_fromBuffer, DUK_VARARGS); duk_put_prop_string(ctx, -2, "fromBuffer");
duk_push_c_function(ctx, ILibDuktape_bignum_random, DUK_VARARGS); duk_put_prop_string(ctx, -2, "random");
char randRange[] = "exports.randomRange = function randomRange(low, high)\
{\
var result = exports.random(high.sub(low)).add(low);\
return(result);\
};";
ILibDuktape_ModSearch_AddHandler_AlsoIncludeJS(ctx, randRange, sizeof(randRange) - 1);
}
void ILibDuktape_dataGenerator_onPause(struct ILibDuktape_readableStream *sender, void *user)
{