Make Scanner::kNoSourcePos be a true sentinel value

runtime/vm/unit_test.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/unit_test.h"
 
 #include <stdio.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 182 matching lines @@
 
 
 char* TestCase::BigintToHexValue(Dart_CObject* bigint) {
   return bin::CObject::BigintToHexValue(bigint);
 }
 
 
 void AssemblerTest::Assemble() {
   const String& function_name = String::ZoneHandle(Symbols::New(name_));
   const Class& cls = Class::ZoneHandle(
-      Class::New(function_name, Script::Handle(), Scanner::kNoSourcePos));
+      Class::New(function_name, Script::Handle(), 0));
   const Library& lib = Library::ZoneHandle(Library::New(function_name));
   cls.set_library(lib);
   Function& function = Function::ZoneHandle(
       Function::New(function_name, RawFunction::kRegularFunction,
                     true, false, false, false, false, cls, 0));
   code_ = Code::FinalizeCode(function, assembler_);
   if (FLAG_disassemble) {
     OS::Print("Code for test '%s' {\n", name_);
     const Instructions& instructions =
         Instructions::Handle(code_.instructions());
     uword start = instructions.EntryPoint();
     Disassembler::Disassemble(start, start + assembler_->CodeSize());
     OS::Print("}\n");
   }
 }
 
 
 CodeGenTest::CodeGenTest(const char* name)
   : function_(Function::ZoneHandle()),
-    node_sequence_(new SequenceNode(Scanner::kNoSourcePos,
+    node_sequence_(new SequenceNode(0,
                                     new LocalScope(NULL, 0, 0))),
     default_parameter_values_(new ZoneGrowableArray<const Instance*> ()) {
   ASSERT(name != NULL);
   const String& function_name = String::ZoneHandle(Symbols::New(name));
   // Add function to a class and that class to the class dictionary so that
   // frame walking can be used.
   const Class& cls = Class::ZoneHandle(
-       Class::New(function_name, Script::Handle(), Scanner::kNoSourcePos));
+       Class::New(function_name, Script::Handle(), 0));
   function_ = Function::New(
       function_name, RawFunction::kRegularFunction,
       true, false, false, false, false, cls, 0);
   function_.set_result_type(Type::Handle(Type::DynamicType()));
   const Array& functions = Array::Handle(Array::New(1));
   functions.SetAt(0, function_);
   cls.SetFunctions(functions);
   Library& lib = Library::Handle(Library::CoreLibrary());
   lib.AddClass(cls);
 }
@@ skipping 54 matching lines @@
   }
   // Copy the remainder of in to out.
   while (*in != '\0') {
     *out++ = *in++;
   }
   *out = '\0';
 }
 
 
 }  // namespace dart