ppapi/PRESUBMIT.py

   1 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 import os
   6 import re
   7 import sys
   8 import subprocess
   9
  10
  11 def RunCmdAndCheck(cmd, err_string, output_api, cwd=None):
  12   results = []
  13   p = subprocess.Popen(cmd, cwd=cwd,
  14                        stdout=subprocess.PIPE,
  15                        stderr=subprocess.PIPE)
  16   (p_stdout, p_stderr) = p.communicate()
  17   if p.returncode:
  18     results.append(
  19         output_api.PresubmitError(err_string,
  20                                   long_text=p_stderr))
  21   return results
  22
  23
  24 def RunUnittests(input_api, output_api):
  25   # Run some Generator unittests if the generator source was changed.
  26   results = []
  27   files = input_api.LocalPaths()
  28   generator_files = []
  29   for filename in files:
  30     name_parts = filename.split(os.sep)
  31     if name_parts[0:2] == ['ppapi', 'generators']:
  32       generator_files.append(filename)
  33   if generator_files != []:
  34     cmd = [ sys.executable, 'idl_tests.py']
  35     ppapi_dir = input_api.PresubmitLocalPath()
  36     results.extend(RunCmdAndCheck(cmd,
  37                                   'PPAPI IDL unittests failed.',
  38                                   output_api,
  39                                   os.path.join(ppapi_dir, 'generators')))
  40   return results
  41
  42
  43 # Verify that the files do not contain a 'TODO' in them.
  44 RE_TODO = re.compile(r'\WTODO\W', flags=re.I)
  45 def CheckTODO(input_api, output_api):
  46   live_files = input_api.AffectedFiles(include_deletes=False)
  47   files = [f.LocalPath() for f in live_files]
  48   todo = []
  49
  50   for filename in files:
  51     name, ext = os.path.splitext(filename)
  52     name_parts = name.split(os.sep)
  53
  54     # Only check normal build sources.
  55     if ext not in ['.h', '.idl']:
  56       continue
  57
  58     # Only examine the ppapi directory.
  59     if name_parts[0] != 'ppapi':
  60       continue
  61
  62     # Only examine public plugin facing directories.
  63     if name_parts[1] not in ['api', 'c', 'cpp', 'utility']:
  64       continue
  65
  66     # Only examine public stable interfaces.
  67     if name_parts[2] in ['dev', 'private', 'trusted']:
  68       continue
  69     if name_parts[2] == 'extensions' and name_parts[3] == 'dev':
  70       continue
  71
  72     filepath = os.path.join('..', filename)
  73     if RE_TODO.search(open(filepath, 'rb').read()):
  74       todo.append(filename)
  75
  76   if todo:
  77     return [output_api.PresubmitError(
  78         'TODOs found in stable public PPAPI files:',
  79         long_text='\n'.join(todo))]
  80   return []
  81
  82 # Verify that no CPP wrappers use un-versioned PPB interface name macros.
  83 RE_UNVERSIONED_PPB = re.compile(r'\bPPB_\w+_INTERFACE\b')
  84 def CheckUnversionedPPB(input_api, output_api):
  85   live_files = input_api.AffectedFiles(include_deletes=False)
  86   files = [f.LocalPath() for f in live_files]
  87   todo = []
  88
  89   for filename in files:
  90     name, ext = os.path.splitext(filename)
  91     name_parts = name.split(os.sep)
  92
  93     # Only check C++ sources.
  94     if ext not in ['.cc']:
  95       continue
  96
  97     # Only examine the public plugin facing ppapi/cpp directory.
  98     if name_parts[0:2] != ['ppapi', 'cpp']:
  99       continue
 100
 101     # Only examine public stable and trusted interfaces.
 102     if name_parts[2] in ['dev', 'private']:
 103       continue
 104
 105     filepath = os.path.join('..', filename)
 106     if RE_UNVERSIONED_PPB.search(open(filepath, 'rb').read()):
 107       todo.append(filename)
 108
 109   if todo:
 110     return [output_api.PresubmitError(
 111         'Unversioned PPB interface references found in PPAPI C++ wrappers:',
 112         long_text='\n'.join(todo))]
 113   return []
 114
 115 # Verify that changes to ppapi headers/sources are also made to NaCl SDK.
 116 def CheckUpdatedNaClSDK(input_api, output_api):
 117   files = input_api.LocalPaths()
 118
 119   # PPAPI files the Native Client SDK cares about.
 120   nacl_sdk_files = []
 121
 122   for filename in files:
 123     name, ext = os.path.splitext(filename)
 124     name_parts = name.split(os.sep)
 125
 126     if len(name_parts) <= 2:
 127       continue
 128
 129     if name_parts[0] != 'ppapi':
 130       continue
 131
 132     if ((name_parts[1] == 'c' and ext == '.h') or
 133         (name_parts[1] in ('cpp', 'utility') and ext in ('.h', '.cc'))):
 134       if name_parts[2] in ('documentation', 'trusted'):
 135         continue
 136       nacl_sdk_files.append(filename)
 137
 138   if not nacl_sdk_files:
 139     return []
 140
 141   verify_ppapi_py = os.path.join(input_api.change.RepositoryRoot(),
 142                                  'native_client_sdk', 'src', 'build_tools',
 143                                  'verify_ppapi.py')
 144   cmd = [sys.executable, verify_ppapi_py] + nacl_sdk_files
 145   return RunCmdAndCheck(cmd,
 146                         'PPAPI Interface modified without updating NaCl SDK.',
 147                         output_api)
 148
 149 def CheckChange(input_api, output_api):
 150   results = []
 151
 152   results.extend(RunUnittests(input_api, output_api))
 153
 154   results.extend(CheckTODO(input_api, output_api))
 155
 156   results.extend(CheckUnversionedPPB(input_api, output_api))
 157
 158   results.extend(CheckUpdatedNaClSDK(input_api, output_api))
 159
 160   # Verify all modified *.idl have a matching *.h
 161   files = input_api.LocalPaths()
 162   h_files = []
 163   idl_files = []
 164   generators_changed = False
 165
 166   # Find all relevant .h and .idl files.
 167   for filename in files:
 168     name, ext = os.path.splitext(filename)
 169     name_parts = name.split(os.sep)
 170     if name_parts[0:2] == ['ppapi', 'c'] and ext == '.h':
 171       h_files.append('/'.join(name_parts[2:]))
 172     elif name_parts[0:2] == ['ppapi', 'api'] and ext == '.idl':
 173       idl_files.append('/'.join(name_parts[2:]))
 174     elif name_parts[0:2] == ['ppapi', 'generators']:
 175       generators_changed = True
 176
 177   # Generate a list of all appropriate *.h and *.idl changes in this CL.
 178   both = h_files + idl_files
 179
 180   # If there aren't any, we are done checking.
 181   if not both: return results
 182
 183   missing = []
 184   for filename in idl_files:
 185     if filename not in set(h_files):
 186       missing.append('ppapi/api/%s.idl' % filename)
 187
 188   # An IDL change that includes [generate_thunk] doesn't need to have
 189   # an update to the corresponding .h file.
 190   new_thunk_files = []
 191   for filename in missing:
 192     lines = input_api.RightHandSideLines(lambda f: f.LocalPath() == filename)
 193     for line in lines:
 194       if line[2].strip() == '[generate_thunk]':
 195         new_thunk_files.append(filename)
 196   for filename in new_thunk_files:
 197     missing.remove(filename)
 198
 199   if missing:
 200     results.append(
 201         output_api.PresubmitPromptWarning(
 202             'Missing PPAPI header, no change or skipped generation?',
 203             long_text='\n  '.join(missing)))
 204
 205   missing_dev = []
 206   missing_stable = []
 207   missing_priv = []
 208   for filename in h_files:
 209     if filename not in set(idl_files):
 210       name_parts = filename.split(os.sep)
 211
 212       if name_parts[-1] == 'pp_macros':
 213         # The C header generator adds a PPAPI_RELEASE macro based on all the
 214         # IDL files, so pp_macros.h may change while its IDL does not.
 215         lines = input_api.RightHandSideLines(
 216             lambda f: f.LocalPath() == 'ppapi/c/%s.h' % filename)
 217         releaseChanged = False
 218         for line in lines:
 219           if line[2].split()[:2] == ['#define', 'PPAPI_RELEASE']:
 220             results.append(
 221                 output_api.PresubmitPromptOrNotify(
 222                     'PPAPI_RELEASE has changed', long_text=line[2]))
 223             releaseChanged = True
 224             break
 225         if releaseChanged:
 226           continue
 227
 228       if 'trusted' in name_parts:
 229         missing_priv.append('  ppapi/c/%s.h' % filename)
 230         continue
 231
 232       if 'private' in name_parts:
 233         missing_priv.append('  ppapi/c/%s.h' % filename)
 234         continue
 235
 236       if 'dev' in name_parts:
 237         missing_dev.append('  ppapi/c/%s.h' % filename)
 238         continue
 239
 240       missing_stable.append('  ppapi/c/%s.h' % filename)
 241
 242   if missing_priv:
 243     results.append(
 244         output_api.PresubmitPromptWarning(
 245             'Missing PPAPI IDL for private interface, please generate IDL:',
 246             long_text='\n'.join(missing_priv)))
 247
 248   if missing_dev:
 249     results.append(
 250         output_api.PresubmitPromptWarning(
 251             'Missing PPAPI IDL for DEV, required before moving to stable:',
 252             long_text='\n'.join(missing_dev)))
 253
 254   if missing_stable:
 255     # It might be okay that the header changed without a corresponding IDL
 256     # change. E.g., comment indenting may have been changed. Treat this as a
 257     # warning.
 258     if generators_changed:
 259       results.append(
 260           output_api.PresubmitPromptWarning(
 261               'Missing PPAPI IDL for stable interface (due to change in ' +
 262               'generators?):',
 263               long_text='\n'.join(missing_stable)))
 264     else:
 265       results.append(
 266           output_api.PresubmitError(
 267               'Missing PPAPI IDL for stable interface:',
 268               long_text='\n'.join(missing_stable)))
 269
 270   # Verify all *.h files match *.idl definitions, use:
 271   #   --test to prevent output to disk
 272   #   --diff to generate a unified diff
 273   #   --out to pick which files to examine (only the ones in the CL)
 274   ppapi_dir = input_api.PresubmitLocalPath()
 275   cmd = [sys.executable, 'generator.py',
 276          '--wnone', '--diff', '--test','--cgen', '--range=start,end']
 277
 278   # Only generate output for IDL files references (as *.h or *.idl) in this CL
 279   cmd.append('--out=' + ','.join([name + '.idl' for name in both]))
 280   cmd_results = RunCmdAndCheck(cmd,
 281                                'PPAPI IDL Diff detected: Run the generator.',
 282                                output_api,
 283                                os.path.join(ppapi_dir, 'generators'))
 284   if cmd_results:
 285     results.extend(cmd_results)
 286
 287   return results
 288
 289
 290 def CheckChangeOnUpload(input_api, output_api):
 291   return CheckChange(input_api, output_api)
 292
 293
 294 def CheckChangeOnCommit(input_api, output_api):
 295   return CheckChange(input_api, output_api)