To create arbitrary BigInts via the C++ API, use BigInt::NewFromWords.
An alternative, as you suggest, is to parse the string as source, because
"BigInt strings with 'n' suffixes" are BigInt literals. Instead of "eval",
the API functions to do that are Script::Compile and Script::Run. Look at
samples/shell.cc or test/cctest/* for examples.
Another alternative, depending on your requirements, might be to create
this custom "parser" (more of a wrapper, really) in JavaScript:
function MyBigInt(str) {
console.assert(str.endsWith("n"));
return BigInt(str.substring(0, str.length - 1));
}
On Sat, Sep 15, 2018 at 8:44 PM J Decker <[email protected]> wrote:
>
>
> On Sat, Sep 15, 2018 at 8:41 PM J Decker <[email protected]> wrote:
>
>> I was implementing a parser that includes BigInt strings with 'n'
>> suffixes...
>> I tried to create a BigInt::New( isolate, ... and then found the only
>> constructor takes an int64; which isn't a very big int.
>>
>> howto bigint from string?
>>
>
> maybe someone could share a snippet to call eval()? Also Date::New()
> doesn't take a string :(
>
>
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