Add getters for column number and script id to v8::Function

src/handles.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 644 matching lines @@
   while (int half = (right - left) / 2) {
     if ((Smi::cast(line_ends_array->get(left + half)))->value() > code_pos) {
       right -= half;
     } else {
       left += half;
     }
   }
   return right + script->line_offset()->value();
 }
 
+// Convert code position into column number.
+int GetScriptColumnNumber(Handle<Script> script, int code_pos) {
+  int line_number = GetScriptLineNumber(script, code_pos);
+  if (line_number == -1) return -1;
+
+  AssertNoAllocation no_allocation;
+  FixedArray* line_ends_array = FixedArray::cast(script->line_ends());
+  line_number = line_number - script->line_offset()->value();
+  if (line_number == 0) return code_pos + script->column_offset()->value();
+  int prev_line_end_pos =
+      Smi::cast(line_ends_array->get(line_number - 1))->value();
+  return code_pos - (prev_line_end_pos + 1);
+}
 
 int GetScriptLineNumberSafe(Handle<Script> script, int code_pos) {
   AssertNoAllocation no_allocation;
   if (!script->line_ends()->IsUndefined()) {
     return GetScriptLineNumber(script, code_pos);
   }
   // Slow mode: we do not have line_ends. We have to iterate through source.
   if (!script->source()->IsString()) {
     return -1;
   }
@@ skipping 237 matching lines @@
 Handle<ObjectHashTable> PutIntoObjectHashTable(Handle<ObjectHashTable> table,
                                                Handle<Object> key,
                                                Handle<Object> value) {
   CALL_HEAP_FUNCTION(table->GetIsolate(),
                      table->Put(*key, *value),
                      ObjectHashTable);
 }
 
 
 } }  // namespace v8::internal