deprived-main-website/static/OpenBirchWasm/OpenBirchWrapper.js

// This is old code but works, so i won't touch it ¯\_(ツ)_/¯

function str2C(s) {
    var size = lengthBytesUTF8(s) + 1;
    var ret = _malloc(size);
    stringToUTF8Array(s, HEAP8, ret, size);
    return ret;
}

window.runEval = function (inputText, stopAssignments = false) {
    console.log("input: " + inputText);
    var inputPtr = str2C(inputText);
    var resultPointer = Module._eval(inputPtr, stopAssignments);

    var resultString = "";

    // Convert resultPointer (char*) to JavaScript string
    // Here, we treat it as ASCII and convert byte by byte
    if (resultPointer) {
        var i = 0;
        while (true) {
            var charCode = Module.getValue(resultPointer + i, 'i8');
            if (charCode === 0) break;
            resultString += String.fromCharCode(charCode);
            i++;
        }
    }
    console.log("Result from eval:", resultString);

    // Free allocated memory
    _free(resultPointer);

    return resultString;
}