envChain_function-calls.js

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var g = newGlobal({ newCompartment: true });

g.eval(`

let counter = 10;

function func1() {

  var local1 = counter;

  var func2 = function f2() {

    var local2 = counter;

    var func3 = function f3() {

      var local3 = counter;

      var func4 = function f4() {

        var local4 = counter;

        // Close these local variables over to make them available in

        // the environment objects.

        var x = [local1, local2, local3];

        counter++;

        debugger;

};

      func4();

};

    func3();

};

  func2();

};

`);

var dbg = new Debugger(g);

var result = null;

dbg.onDebuggerStatement = function handleDebuggerStatement(f) {

  result = {

    local1: f.eval("local1").return,

    local2: f.eval("local2").return,

    local3: f.eval("local3").return,

    local4: f.eval("local4").return,

};

};

g.eval('func1()');

// All references, with/without the function call bounrary, should see

// the same value.

assertEq(result.local1, 10);

assertEq(result.local2, 10);

assertEq(result.local3, 10);

assertEq(result.local4, 10);

g.eval('func1()');

// All references, with/without the function call bounrary, should see

// the same updated value in the 2nd call's environment chain.

assertEq(result.local1, 11);

assertEq(result.local2, 11);

assertEq(result.local3, 11);

assertEq(result.local4, 11);