Eliminate dependencies on assemblers and code stubs in precompiled runtime.

runtime/lib/errors.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/bootstrap_natives.h"
 #include "vm/exceptions.h"
 #include "vm/object_store.h"
 #include "vm/runtime_entry.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
 // Scan the stack until we hit the first function in the _AssertionError
 // class. We then return the next frame's script taking inlining into account.
 static RawScript* FindScript(DartFrameIterator* iterator) {
-  if (FLAG_precompiled_runtime) {
-    // The precompiled runtime faces two issues in recovering the correct
-    // assertion text. First, the precompiled runtime does not include
-    // the inlining meta-data so we cannot walk the inline-aware stack trace.
-    // Second, the script text itself is missing so whatever script is returned
-    // from here will be missing the assertion expression text.
-    iterator->NextFrame();  // Skip _AssertionError._evaluateAssertion frame
-    return Exceptions::GetCallerScript(iterator);
-  }
+#if defined(DART_PRECOMPILED_RUNTIME)
+  // The precompiled runtime faces two issues in recovering the correct
+  // assertion text. First, the precompiled runtime does not include
+  // the inlining meta-data so we cannot walk the inline-aware stack trace.
+  // Second, the script text itself is missing so whatever script is returned
+  // from here will be missing the assertion expression text.
+  iterator->NextFrame();  // Skip _AssertionError._evaluateAssertion frame
+  return Exceptions::GetCallerScript(iterator);
+#else
   StackFrame* stack_frame = iterator->NextFrame();
   Code& code = Code::Handle();
   Function& func = Function::Handle();
   const Class& assert_error_class =
       Class::Handle(Library::LookupCoreClass(Symbols::AssertionError()));
   ASSERT(!assert_error_class.IsNull());
   bool hit_assertion_error = false;
   while (stack_frame != NULL) {
     code ^= stack_frame->LookupDartCode();
     if (code.is_optimized()) {
@@ skipping 13 matching lines @@
       if (hit_assertion_error) {
         return func.script();
       }
       ASSERT(!hit_assertion_error);
       hit_assertion_error = (func.Owner() == assert_error_class.raw());
     }
     stack_frame = iterator->NextFrame();
   }
   UNREACHABLE();
   return Script::null();
+#endif  // defined(DART_PRECOMPILED_RUNTIME)
 }
 
 
 // Allocate and throw a new AssertionError.
 // Arg0: index of the first token of the failed assertion.
 // Arg1: index of the first token after the failed assertion.
 // Arg2: Message object or null.
 // Return value: none, throws an exception.
 DEFINE_NATIVE_ENTRY(AssertionError_throwNew, 3) {
   // No need to type check the arguments. This function can only be called
@@ skipping 115 matching lines @@
 
 // Rethrow an error with a stacktrace.
 DEFINE_NATIVE_ENTRY(Async_rethrow, 2) {
   GET_NON_NULL_NATIVE_ARGUMENT(Instance, error, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(Instance, stacktrace, arguments->NativeArgAt(1));
   Exceptions::ReThrow(thread, error, stacktrace);
   return Object::null();
 }
 
 }  // namespace dart