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// Verify the environment chain for Debugger.Object described in
// js/src/vm/EnvironmentObject.h.
// WithEnvironmentObject shouldn't be created if all bindings are shadowed.
const g = newGlobal({newCompartment: true});
const dbg = new Debugger();
const gw = dbg.addDebuggee(g);
const bindings = {
bindings_prop_var: 61,
bindings_prop_lexical: 71,
bindings_prop_lexical2: 71,
};
const {envs, vars} = JSON.parse(gw.executeInGlobalWithBindings(`
var bindings_prop_var = 60;
let bindings_prop_lexical = 70;
let bindings_prop_lexical2;
bindings_prop_lexical2 = 70;
const vars = {
bindings_prop_var,
bindings_prop_lexical,
bindings_prop_lexical2,
};
const envs = [];
let env = getInnerMostEnvironmentObject();
while (env) {
envs.push({
type: getEnvironmentObjectType(env) || "*global*",
bindings_prop_var: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_var"),
bindings_prop_var_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_var")?.value,
bindings_prop_lexical: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical"),
bindings_prop_lexical_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical")?.value,
bindings_prop_lexical2: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical2"),
bindings_prop_lexical2_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical2")?.value,
});
env = getEnclosingEnvironmentObject(env);
}
JSON.stringify({envs, vars});
`, bindings).return);
assertEq(vars.bindings_prop_var, 60,
"qualified var should read the value set by the declaration");
assertEq(vars.bindings_prop_lexical, 70,
"lexical should read the value set by the declaration");
assertEq(vars.bindings_prop_lexical2, 70,
"lexical should read the value set by the assignment");
assertEq(bindings.bindings_prop_var, 61,
"the original bindings property must not be overwritten for var");
assertEq(bindings.bindings_prop_lexical, 71,
"the original bindings property must not be overwritten for lexical");
assertEq(bindings.bindings_prop_lexical2, 71,
"the original bindings property must not be overwritten for lexical");
assertEq(envs.length, 2,
"WithEnvironmentObject shouldn't be created if all bindings are " +
"shadowed");
let i = 0, env;
env = envs[i]; i++;
assertEq(env.type, "GlobalLexicalEnvironmentObject");
assertEq(env.bindings_prop_var, false);
assertEq(env.bindings_prop_lexical, true,
"lexical must live in the GlobalLexicalEnvironmentObject even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_lexical_value, 70);
assertEq(env.bindings_prop_lexical2, true,
"lexical must live in the GlobalLexicalEnvironmentObject even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_lexical2_value, 70,
"lexical value must be set by the assignment even if it conflicts with the bindings object property");
env = envs[i]; i++;
assertEq(env.type, "*global*");
assertEq(env.bindings_prop_var, true,
"qualified var binding must be created in the global even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_var_value, 60,
"qualified var value must be set even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_lexical, false);
assertEq(env.bindings_prop_lexical2, false);
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