How to use the NativeParser function from bindings

Find comprehensive JavaScript bindings.NativeParser code examples handpicked from public code repositorys.

In the context of the V8 JavaScript engine, bindings.NativeParser is a method that allows Node.js to parse the debug information of a C++ addon module loaded with bindings.native.

TSVParser.js

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}
if (!possibleValues.includes(type)) {
    throw new Error(`Not a valid type: '${type}'`);
}
this.state = IteratorState.WORKING;
this.nativeParser = new NativeParser();
this.nativeParser.on("parsedLine", this.parsedLine);
this.nativeParser.on("error", (err) => {
    if (err instanceof Error) {
        throw err;

+ 4 other calls in file

raw.test.js

GitHub: Totto16/imdb-dataset-parser

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describe("Verify memory allocated in the class NativeParser is reclaimed", function () {
    it("Should not increase memory usage over time", function (done) {
        return iterate.async(
            () => {
                return new Promise((resolve) => {
                    const parser = new imdbDatasetParser.NativeParser()

                    let v = Buffer.alloc(1000)

                    parser.on("parsedLine", function () {

+ 7 other calls in file

How does bindings.NativeParser work?

In the context of the V8 JavaScript engine, bindings.NativeParser is a method that allows Node.js to parse the debug information of a C++ addon module loaded with bindings.native. When a Node.js application loads a native addon module written in C++ with bindings.native, the module is compiled as a shared library that can be dynamically linked to the Node.js runtime. The bindings.NativeParser method provides a way to parse the debug information of the shared library at runtime, which can be useful for advanced use cases such as debugging and profiling. The bindings.NativeParser method takes the name of the shared library as its argument, and returns a parser object that can be used to access the debug information of the shared library. The parser object provides several methods for accessing the debug information, such as getFunctions(), which returns an array of function objects representing the functions in the shared library, and getSourceLocations(), which returns an array of source location objects representing the source locations of the functions in the shared library. For example, the following code parses the debug information of a native addon module called myaddon: javascript Copy code {{{{{{{ const bindings = require('bindings'); const parser = new bindings.NativeParser('myaddon'); const functions = parser.getFunctions(); const sourceLocations = parser.getSourceLocations(); console.log(functions); console.log(sourceLocations); In this example, we use the bindings method to load the myaddon shared library, and then create a new parser object using the NativeParser method. We then use the getFunctions() and getSourceLocations() methods of the parser object to get the function and source location information of the shared library. This information is stored in the functions and sourceLocations variables, and is then logged to the console using console.log(). Overall, bindings.NativeParser provides a way to parse the debug information of a C++ addon module loaded with bindings.native in Node.js, making it easier to perform advanced tasks such as debugging and profiling.

debug.js

GitHub: Totto16/imdb-dataset-parser

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    return path.join(__dirname, "..", `tests/files/${name}`)
}


class TSVParser {
    constructor({ filePath, type }) {
        this.nativeParser = new imdbDatasetParser.NativeParser()


        this.nativeParser.on("parsedLine", (line) => {
            console.log(line)
        })

+ 3 other calls in file

Ai Example

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const bindings = require("bindings");
const parser = new bindings.NativeParser("myaddon");

const functions = parser.getFunctions();
const sourceLocations = parser.getSourceLocations();

console.log(functions);
console.log(sourceLocations);

In this code, we use the bindings method to load the myaddon shared library and expose its functions and objects as a JavaScript object. We then create a new parser object using the NativeParser method, passing the name of the shared library as an argument. We then use the getFunctions() and getSourceLocations() methods of the parser object to get the function and source location information of the shared library. This information is stored in the functions and sourceLocations variables, and is then logged to the console using console.log(). Note that the exact format of the function and source location objects returned by the parser will depend on the platform and architecture of the system running the Node.js application. Overall, bindings.NativeParser provides a way to parse the debug information of a C++ addon module loaded with bindings.native in Node.js, making it easier to perform advanced tasks such as debugging and profiling.

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