Add script streaming API

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index c975471eccf8ef67bb5d835860336e3bdd53b8cb..6d10ca2cf0eba41065d8a16dcea3607546113d6f 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -627,6 +627,11 @@ class Parser : public ParserBase<ParserTraits> {
     return parser.Parse();
   }
   bool Parse();
+  void ParseOnBackground();
+
+  // Handle errors detected during parsing, move statistics to Isolate,
+  // internalize strings (move them to the heap).
+  void Internalize();
 
  private:
   friend class ParserTraits;
@@ -663,8 +668,8 @@ class Parser : public ParserBase<ParserTraits> {
   CompilationInfo* info() const { return info_; }
 
   // Called by ParseProgram after setting up the scanner.
-  FunctionLiteral* DoParseProgram(CompilationInfo* info,
-                                  Handle<String> source);
+  FunctionLiteral* DoParseProgram(CompilationInfo* info, Scope** scope,
+                                  Scope** ad_hoc_eval_scope);

[rossberg, 2014/09/10 13:39:28]

Why is this called ad_hoc_eval_scope everywhere, and not just eval_scope?

[marja, 2014/09/10 14:22:12]

Renamed to eval_scope.

It was called ad hoc because of this comment:

          // TODO(mstarzinger): Global strict eval calls, need their own scope
          // as specified in ES5 10.4.2(3). The correct fix would be to always
          // add this scope in DoParseProgram(), but that requires adaptations
          // all over the code base, so we go with a quick-fix for now.
          // In the same manner, we have to patch the parsing mode.

 
   void SetCachedData();
 
@@ -682,7 +687,8 @@ class Parser : public ParserBase<ParserTraits> {
   // By making the 'exception handling' explicit, we are forced to check
   // for failure at the call sites.
   void* ParseSourceElements(ZoneList<Statement*>* processor, int end_token,
-                            bool is_eval, bool is_global, bool* ok);
+                            bool is_eval, bool is_global,
+                            Scope** ad_hoc_eval_scope, bool* ok);
   Statement* ParseModuleElement(ZoneList<const AstRawString*>* labels,
                                 bool* ok);
   Statement* ParseModuleDeclaration(ZoneList<const AstRawString*>* names,
@@ -809,10 +815,6 @@ class Parser : public ParserBase<ParserTraits> {
 
   void ThrowPendingError();
 
-  // Handle errors detected during parsing, move statistics to Isolate,
-  // internalize strings (move them to the heap).
-  void Internalize();
-
   Isolate* isolate_;
 
   Handle<Script> script_;