From 75db97cb3772fc0693947ec17c5954a04cb234a8 Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Mon, 19 Mar 2018 14:48:24 +0100
Subject: Bug 1320388: Move JSFunction::HAS_REST to JSScript and LazyScript

Issue #78
[Depends on] Bug 883377: Implement ES6 function "name" property
semantics
---
 js/src/jsscript.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'js/src/jsscript.cpp')

diff --git a/js/src/jsscript.cpp b/js/src/jsscript.cpp
index b568b4b30..929251d8b 100644
--- a/js/src/jsscript.cpp
+++ b/js/src/jsscript.cpp
@@ -316,6 +316,7 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
         IsLegacyGenerator,
         IsStarGenerator,
         IsAsync,
+        HasRest,
         OwnSource,
         ExplicitUseStrict,
         SelfHosted,
@@ -431,6 +432,8 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
             scriptBits |= (1 << IsStarGenerator);
         if (script->asyncKind() == AsyncFunction)
             scriptBits |= (1 << IsAsync);
+        if (script->hasRest())
+            scriptBits |= (1 << HasRest);
         if (script->hasSingletons())
             scriptBits |= (1 << HasSingleton);
         if (script->treatAsRunOnce())
@@ -582,6 +585,8 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
 
         if (scriptBits & (1 << IsAsync))
             script->setAsyncKind(AsyncFunction);
+        if (scriptBits & (1 << HasRest))
+            script->setHasRest();
     }
 
     JS_STATIC_ASSERT(sizeof(jsbytecode) == 1);
@@ -2637,6 +2642,8 @@ JSScript::initFromFunctionBox(ExclusiveContext* cx, HandleScript script,
     script->isGeneratorExp_ = funbox->isGenexpLambda;
     script->setGeneratorKind(funbox->generatorKind());
     script->setAsyncKind(funbox->asyncKind());
+    if (funbox->hasRest())
+        script->setHasRest();
 
     PositionalFormalParameterIter fi(script);
     while (fi && !fi.closedOver())
@@ -3295,6 +3302,7 @@ js::detail::CopyScript(JSContext* cx, HandleScript src, HandleScript dst,
     dst->needsHomeObject_ = src->needsHomeObject();
     dst->isDefaultClassConstructor_ = src->isDefaultClassConstructor();
     dst->isAsync_ = src->asyncKind() == AsyncFunction;
+    dst->hasRest_ = src->hasRest_;
 
     if (nconsts != 0) {
         GCPtrValue* vector = Rebase<GCPtrValue>(dst, src, src->consts()->vector);
@@ -4028,6 +4036,7 @@ LazyScript::Create(ExclusiveContext* cx, HandleFunction fun,
     p.shouldDeclareArguments = false;
     p.hasThisBinding = false;
     p.isAsync = false;
+    p.hasRest = false;
     p.numClosedOverBindings = closedOverBindings.length();
     p.numInnerFunctions = innerFunctions.length();
     p.generatorKindBits = GeneratorKindAsBits(NotGenerator);
@@ -4169,7 +4178,7 @@ JSScript::hasLoops()
 bool
 JSScript::mayReadFrameArgsDirectly()
 {
-    return argumentsHasVarBinding() || (function() && function()->hasRest());
+    return argumentsHasVarBinding() || hasRest();
 }
 
 static inline void
-- 
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