Json in ActionScript

import flash.utils.ByteArray;
import com.adobe.serialization.json.JSON;

// We'll use these two classes to demonstrate encoding and
// decoding of custom types below.
class Response1 {
    public var page:int;
    public var fruits:Array;
}

// Only public properties will be encoded/decoded in JSON.
class Response2 {
    public var page:int;
    public var fruits:Array;
}

function main():void {
    // First we'll look at encoding basic data types to
    // JSON strings. Here are some examples for atomic values.
    var bolB:String = JSON.encode(true);
    trace(bolB);

    var intB:String = JSON.encode(1);
    trace(intB);

    var fltB:String = JSON.encode(2.34);
    trace(fltB);

    var strB:String = JSON.encode("gopher");
    trace(strB);

    // And here are some for arrays and objects, which encode
    // to JSON arrays and objects as you'd expect.
    var slcD:Array = ["apple", "peach", "pear"];
    var slcB:String = JSON.encode(slcD);
    trace(slcB);

    var mapD:Object = {apple: 5, lettuce: 7};
    var mapB:String = JSON.encode(mapD);
    trace(mapB);

    // The JSON package can automatically encode your
    // custom data types. It will only include public
    // properties in the encoded output.
    var res1D:Response1 = new Response1();
    res1D.page = 1;
    res1D.fruits = ["apple", "peach", "pear"];
    var res1B:String = JSON.encode(res1D);
    trace(res1B);

    // Now let's look at decoding JSON data into ActionScript
    // values. Here's an example for a generic data structure.
    var byt:String = '{"num":6.13,"strs":["a","b"]}';

    // Here's the actual decoding, and a check for associated errors.
    try {
        var dat:Object = JSON.decode(byt);
        trace(dat);
    } catch (error:Error) {
        trace("Error decoding JSON: " + error.message);
    }

    // In order to use the values in the decoded object,
    // we can access them directly.
    var num:Number = dat.num;
    trace(num);

    // Accessing nested data is straightforward.
    var str1:String = dat.strs[0];
    trace(str1);

    // We can also decode JSON into custom data types.
    var str:String = '{"page": 1, "fruits": ["apple", "peach"]}';
    var res:Response2 = JSON.decode(str, Response2) as Response2;
    trace(res.page + ", " + res.fruits);
    trace(res.fruits[0]);

    // In ActionScript, we don't have direct streaming to output,
    // but we can create a JSON string and then write it to a file
    // or send it over the network.
    var d:Object = {apple: 5, lettuce: 7};
    var jsonString:String = JSON.encode(d);
    trace(jsonString);
}

main();

This ActionScript code demonstrates JSON encoding and decoding, similar to the original Go example. Here are some key points about the translation:

ActionScript uses the com.adobe.serialization.json.JSON class for JSON operations, which needs to be imported.
Instead of structs, we use classes in ActionScript. The Response1 and Response2 classes are defined with public properties.
ActionScript doesn’t have a built-in map type, so we use Object instead.
Error handling is done with try-catch blocks in ActionScript, rather than returning error values.
Type assertions aren’t necessary in ActionScript as it uses dynamic typing.
ActionScript doesn’t have a direct equivalent to Go’s streaming to os.Stdout. Instead, we create a JSON string that could be written to a file or sent over a network.
The trace function is used for console output in ActionScript, similar to fmt.Println in Go.

Remember that this code is meant to run in an ActionScript environment, such as Adobe AIR or Flash Player. The exact setup and execution method may vary depending on your development environment.

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