Make native syntax an early error in the preparser.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 72561e0e3e14245135e75966cc4d7e59f853caad..914d3c7fdcab798c7652b1ff19c206070d033e54 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -33,6 +33,7 @@
 #include "preparse-data-format.h"
 #include "preparse-data.h"
 #include "scopes.h"
+#include "preparser.h"
 
 namespace v8 {
 namespace internal {
@@ -157,6 +158,13 @@ class ScriptDataImpl : public ScriptData {
 
 class ParserApi {
  public:
+  enum Flags {
+    kNoFlags = v8::preparser::PreParser::kNoFlags,
+    kAllowLazy = v8::preparser::PreParser::kAllowLazy,
+    kAllowNativesSyntax = v8::preparser::PreParser::kAllowNativesSyntax,
+    kHarmonyScoping = kAllowNativesSyntax * 2

[fschneider, 2011/10/17 10:33:51]

Why is there not harmony scoping flag in the preparser?

[Lasse Reichstein, 2011/10/17 11:00:30]

Not sure there is a reason. In the preparser, the parser gets the
harmony-scoping bool from the scanner, so it doesn't need an extra flag.

+  };
+
   // Parses the source code represented by the compilation info and sets its
   // function literal.  Returns false (and deallocates any allocated AST
   // nodes) if parsing failed.
@@ -165,13 +173,13 @@ class ParserApi {
   // Generic preparser generating full preparse data.
   static ScriptDataImpl* PreParse(UC16CharacterStream* source,
                                   v8::Extension* extension,
-                                  bool harmony_scoping);
+                                  int flags);
 
   // Preparser that only does preprocessing that makes sense if only used
   // immediately after.
   static ScriptDataImpl* PartialPreParse(UC16CharacterStream* source,
                                          v8::Extension* extension,
-                                         bool harmony_scoping);
+                                         int flags);
 };
 
 // ----------------------------------------------------------------------------