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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/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   "page_flags",
     20   "math_exp_constants",
     21   "math_exp_log_table",
     22   "ForDeoptEntry",
     23 ]
     24 
     25 def Find(filename, re):
     26   references = []
     27   with open(filename, "r") as f:
     28     for line in f:
     29       match = re.match(line)
     30       if match:
     31         references.append(match.group(1))
     32   return references
     33 
     34 def Main():
     35   declarations = Find(DECLARE_FILE, DECLARE_RE)
     36   registrations = Find(REGISTER_FILE, REGISTER_RE)
     37   difference = list(set(declarations) - set(registrations) - set(BLACKLISTED))
     38   for reference in difference:
     39     print("Declared but not registered: ExternalReference::%s" % reference)
     40   return len(difference) > 0
     41 
     42 if __name__ == "__main__":
     43   sys.exit(Main())
     44