Environment-find-06.js

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// Environment.prototype.find finds bindings that are function arguments, 'let'

// bindings, or FunctionExpression names.

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

g.eval("function h() { debugger; }");

var dbg = new Debugger(g);

function test1(code) {

    var hits = 0;

    dbg.onDebuggerStatement = function (frame) {

        var env = frame.older.environment.find('X');

        assertEq(env.names().indexOf('X') !== -1, true);

        assertEq(env.type, 'declarative');

        assertEq(env.parent !== null, true);

        hits++;

};

    g.eval(code);

    assertEq(hits, 1);

var manyNames = '';

for (var i = 0; i < 2048; i++)

    manyNames += 'x' + i + ', ';

manyNames += 'X';

function test2(code) {

    print(code + " : one");

    test1(code.replace('@@', 'X'));

    print(code + " : many");

    test1(code.replace('@@', manyNames));

test2('function f(@@) { h(); }  f(1);');

test2('function f(@@) { h(); }  f();');

test2('function f(@@) { return function g() { h(X); }; }  f(1)();');

test2('function f(@@) { return function g() { h(X); }; }  f()();');

test2('                    { let @@ = 0; h(); }');

test2('function f(a, b, c) { let @@ = 0; h(); }  f(1, 2, 3);');

test2('             { let @@ = 0; { let y = 0; h(); } }');

test2('function f() { let @@ = 0; { let y = 0; h(); } }  f();');

test2('             { for (let @@ = 0; X < 1; X++) h(); }');

test2('function f() { for (let @@ = 0; X < 1; X++) h(); }  f();');

test1('(function X() { h(); })();');

test1('(function X(a, b, c) { h(); })(1, 2, 3);');