Move CodeGenerator::DescriptorList into shared part.

runtime/vm/code_generator.cc

 // Copyright (c) 2011, 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/code_generator.h"
 
 #include "vm/code_index_table.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
@@ skipping 10 matching lines @@
 
 DEFINE_FLAG(bool, inline_cache, true, "enable inline caches");
 DEFINE_FLAG(bool, trace_deopt, false, "Trace deoptimization");
 DEFINE_FLAG(bool, trace_ic, false, "trace IC handling");
 DEFINE_FLAG(bool, trace_patching, false, "Trace patching of code.");
 DEFINE_FLAG(bool, trace_runtime_calls, false, "Trace runtime calls.");
 DECLARE_FLAG(int, deoptimization_counter_threshold);
 DECLARE_FLAG(bool, trace_type_checks);
 
 
+void CodeGenerator::DescriptorList::AddDescriptor(
+    PcDescriptors::Kind kind,
+    intptr_t pc_offset,
+    intptr_t node_id,
+    intptr_t token_index,
+    intptr_t try_index) {
+  struct PcDesc data;
+  data.pc_offset = pc_offset;
+  data.kind = kind;
+  data.node_id = node_id;
+  data.token_index = token_index;
+  data.try_index = try_index;
+  list_.Add(data);
+}
+
+
+RawPcDescriptors* CodeGenerator::DescriptorList::FinalizePcDescriptors(
+    uword entry_point) {
+  intptr_t num_descriptors = Length();
+  const PcDescriptors& descriptors =
+      PcDescriptors::Handle(PcDescriptors::New(num_descriptors));
+  for (intptr_t i = 0; i < num_descriptors; i++) {
+    descriptors.AddDescriptor(i,
+                              (entry_point + PcOffset(i)),
+                              Kind(i),
+                              NodeId(i),
+                              TokenIndex(i),
+                              TryIndex(i));
+  }
+  return descriptors.raw();
+}
+
+
 const Array& CodeGenerator::ArgumentsDescriptor(
     int num_arguments,
     const Array& optional_arguments_names) {
   const intptr_t num_named_args =
       optional_arguments_names.IsNull() ? 0 : optional_arguments_names.Length();
   const intptr_t num_pos_args = num_arguments - num_named_args;
 
   // Build the argument descriptor array, which consists of the total number of
   // arguments, the number of positional arguments, alphabetically sorted
   // pairs of name/position, and a terminating null.
@@ skipping 1083 matching lines @@
       }
     }
   }
   // The cache is null terminated, therefore the loop above should never
   // terminate by itself.
   UNREACHABLE();
   return Code::null();
 }
 
 }  // namespace dart