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function bytecode(f) {
if (typeof disassemble !== "function")
return "unavailable";
var d = disassemble(f);
return d.slice(d.indexOf("main:"), d.indexOf("\n\n"));
}
function hasGname(f, v, hasIt = true) {
// Do a try-catch that prints the full stack, so we can tell
// _which_ part of this test failed.
try {
var b = bytecode(f);
if (b != "unavailable") {
assertEq(b.includes(`GetGName "${v}"`), hasIt);
assertEq(b.includes(`GetName "${v}"`), !hasIt);
}
} catch (e) {
print(e.stack);
throw e;
}
}
var x = "outer";
{
let x = "inner";
eval("function h() { assertEq(x, 'inner');} h()");
eval("function h2() { (function nest() { assertEq(x, 'inner'); })(); } h2()");
}
// GNAME optimizations should work through lazy parsing.
eval(`
function h3() {
assertEq(x, 'outer');
}
h3();
hasGname(h3, 'x', true);
`);
eval(`
function h4() {
function nest() { assertEq(x, 'outer'); }
nest();
return nest;
}
hasGname(h4(), 'x', true);
`);
with ({}) {
let x = "inner";
eval("function j() { assertEq(x, 'inner');} j()");
eval("function j2() { (function nest() { assertEq(x, 'inner'); })(); } j2()");
}
(function () {
let x = "inner";
eval("function l() { assertEq(x, 'inner');} l()");
eval("function l2() { (function nest() { assertEq(x, 'inner'); })(); } l2()");
})();
var y1 = 5;
eval(`
'use strict';
var y1 = 6;
assertEq(y1, 6);
(function() { assertEq(y1, 6); })()
`);
assertEq(y1, 5);
eval(`
'use strict';
var y2 = 6;
assertEq(y2, 6);
(function() { assertEq(y2, 6); })()
`);
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