More PcDescriptor cleanups.

runtime/vm/parser.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
@@ skipping 312 matching lines @@
     const GrowableObjectArray& pending_functions =
         GrowableObjectArray::Handle(I->object_store()->pending_functions());
     ASSERT(pending_functions.Length() > 0);
     ASSERT(pending_functions.At(pending_functions.Length()-1) ==
         current_function().raw());
     pending_functions.RemoveLast();
   }
 }
 
 
+// Each try in this function gets its own try index.
+// See definition of RawPcDescriptors::PcDescriptor.
+int16_t Parser::AllocateTryIndex() {
+  if (!Utils::IsInt(16, last_used_try_index_ - 1)) {
+    ReportError("too many nested try statements");
+  }
+  return last_used_try_index_++;
+}
+
+
 void Parser::SetScript(const Script& script, intptr_t token_pos) {
   script_ = script.raw();
   tokens_iterator_.SetStream(
       TokenStream::Handle(I, script.tokens()), token_pos);
   token_kind_ = Token::kILLEGAL;
 }
 
 
 bool Parser::SetAllowFunctionLiterals(bool value) {
   bool current_value = allow_function_literals_;
@@ skipping 10727 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart