File: stubify_ll.py

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# Copyright 2017 The Emscripten Authors.  All rights reserved.
# Emscripten is available under two separate licenses, the MIT license and the
# University of Illinois/NCSA Open Source License.  Both these licenses can be
# found in the LICENSE file.

# given a file of ll and a list of names to retain, makes all other functions into stubs.
# you can then build with -s LINKABLE=1 and see any compilation errors on the specific functions

from __future__ import print_function
import os, sys

kill = False

valids = sys.argv[2].split(',')

for line in open(sys.argv[1]).readlines():
  line = line.replace('\n', '')
  if line.startswith('define ') and line.endswith('{'):
    ok = False
    for valid in valids:
      if valid in line: ok = True
    if not ok:
      line = line.replace('define ', 'declare ').replace(' internal ', ' ').replace(' weak ', ' ')[:-1]
      kill = True
    else:
      line = line.replace(' internal ', ' ')
    print(line)
  else:
    if not kill:
      print(line)
    else:
      if line == '}': kill = False