Can I get the source text of JavaScript functions in C++ callback function using google v8?

Question

I am embeding google v8 into my C++ program. I want to get the source code of Javascript functions passed as arguments into my C++ function. For example:

function ComputePixel(nir, red, blue) {
    return (nir-red)/(blue-red)
}
var layer = L8.function(ComputePixel, {
    ‘nir': L8.select('B5'),
    ‘red': L8.select('B4'),
    ‘blue': L8.select('B2’) })

Here "L8.function" is my C++ callback function. Is there any way I get can the complete source of ComputePixel in my C++ function?

L8.function is a callback function in C++ registered in V8. I would like to get the source of the first argument of it. So it means I have to use C++ code to do this. — kyleqian, May 12 '20 at 01:52
Then you should post what you have on the C++ side of things. `v8::String::Utf8Value str(args[0]->ToString());` doesn't work? — user120242, May 12 '20 at 02:29

score 1 · Accepted Answer · answered May 13 '20 at 03:30

1

You should be able to call ToString on it:

v8::String::Utf8Value str(args[0]->ToString());

answered May 13 '20 at 03:30

user120242

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Can I get the source text of JavaScript functions in C++ callback function using google v8?

1 Answers1