Bug 1165486 - Debug function to dump static scope chain of scripts. (r=efaust)

This commit is contained in:
Shu-yu Guo 2015-06-15 21:32:30 -07:00
Родитель ea6cf2a6c7
Коммит ce36264858
3 изменённых файлов: 67 добавлений и 0 удалений

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@ -4318,6 +4318,36 @@ ReflectTrackedOptimizations(JSContext* cx, unsigned argc, Value* vp)
return true;
}
#ifdef DEBUG
static bool
DumpStaticScopeChain(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
RootedObject callee(cx, &args.callee());
if (args.length() != 1) {
ReportUsageError(cx, callee, "Wrong number of arguments");
return false;
}
if (!args[0].isObject() || !args[0].toObject().is<JSFunction>()) {
ReportUsageError(cx, callee, "Argument must be an interpreted function");
return false;
}
RootedFunction fun(cx, &args[0].toObject().as<JSFunction>());
if (!fun->isInterpreted()) {
ReportUsageError(cx, callee, "Argument must be an interpreted function");
return false;
}
js::DumpStaticScopeChain(fun->getOrCreateScript(cx));
args.rval().setUndefined();
return true;
}
#endif
namespace js {
namespace shell {
@ -4966,6 +4996,12 @@ static const JSFunctionSpecWithHelp fuzzing_unsafe_functions[] = {
" any. If |fun| is not a scripted function or has not been compiled by\n"
" Ion, null is returned."),
#ifdef DEBUG
JS_FN_HELP("dumpStaticScopeChain", DumpStaticScopeChain, 1, 0,
"dumpStaticScopeChain(fun)",
" Prints the static scope chain of an interpreted function fun."),
#endif
JS_FS_HELP_END
};

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@ -2561,6 +2561,36 @@ js::HasNonSyntacticStaticScopeChain(JSObject* staticScope)
#ifdef DEBUG
void
js::DumpStaticScopeChain(JSScript* script)
{
JSObject* enclosingScope = script->enclosingStaticScope();
for (StaticScopeIter<NoGC> ssi(enclosingScope); !ssi.done(); ssi++) {
switch (ssi.type()) {
case StaticScopeIter<NoGC>::Function:
fprintf(stdout, "function");
break;
case StaticScopeIter<NoGC>::Block:
fprintf(stdout, "block");
break;
case StaticScopeIter<NoGC>::With:
fprintf(stdout, "with");
break;
case StaticScopeIter<NoGC>::NamedLambda:
fprintf(stdout, "named lambda");
break;
case StaticScopeIter<NoGC>::Eval:
fprintf(stdout, "eval");
break;
case StaticScopeIter<NoGC>::NonSyntactic:
fprintf(stdout, "non-syntactic");
break;
}
fprintf(stdout, " -> ");
}
fprintf(stdout, "global\n");
}
typedef HashSet<PropertyName*> PropertyNameSet;
static bool

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@ -1176,6 +1176,7 @@ CreateScopeObjectsForScopeChain(JSContext* cx, AutoObjectVector& scopeChain,
bool HasNonSyntacticStaticScopeChain(JSObject* staticScope);
#ifdef DEBUG
void DumpStaticScopeChain(JSScript* script);
bool
AnalyzeEntrainedVariables(JSContext* cx, HandleScript script);
#endif