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      1 #!/usr/bin/env python
      2 # Copyright 2014 the V8 project authors. All rights reserved.
      3 # Use of this source code is governed by a BSD-style license that can be
      4 # found in the LICENSE file.
      5 
      6 import re
      7 import os
      8 import sys
      9 
     10 DECLARE_FILE = "src/assembler.h"
     11 REGISTER_FILE = "src/snapshot/serialize.cc"
     12 DECLARE_RE = re.compile("\s*static ExternalReference ([^(]+)\(")
     13 REGISTER_RE = re.compile("\s*Add\(ExternalReference::([^(]+)\(")
     14 
     15 WORKSPACE = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), ".."))
     16 
     17 # Ignore those.
     18 BLACKLISTED = [
     19   "fixed_typed_array_base_data_offset",
     20   "page_flags",
     21   "math_exp_constants",
     22   "math_exp_log_table",
     23   "ForDeoptEntry",
     24 ]
     25 
     26 def Find(filename, re):
     27   references = []
     28   with open(filename, "r") as f:
     29     for line in f:
     30       match = re.match(line)
     31       if match:
     32         references.append(match.group(1))
     33   return references
     34 
     35 def Main():
     36   declarations = Find(DECLARE_FILE, DECLARE_RE)
     37   registrations = Find(REGISTER_FILE, REGISTER_RE)
     38   difference = list(set(declarations) - set(registrations) - set(BLACKLISTED))
     39   for reference in difference:
     40     print("Declared but not registered: ExternalReference::%s" % reference)
     41   return len(difference) > 0
     42 
     43 if __name__ == "__main__":
     44   sys.exit(Main())
     45