Add YCM config

Author: isaachier

.ycm_extra_conf.py

@@ -0,0 +1,92 @@
+# See LICENSE file for license
+
+import os
+import ycm_core
+
+
+def DirectoryOfThisScript():
+  return os.path.dirname( os.path.abspath( __file__ ) )
+
+
+project_dir = DirectoryOfThisScript()
+
+try:
+    with open('build/_3rdParty/Hunter/install-root-dir') as f:
+        hunter_install_dir = f.readline()
+except IOError:
+    # Ignore if file does not exist
+    hunter_install_dir = ''
+
+flags = [
+'-Wall',
+'-Werror',
+'-pedantic',
+'-std=c++11',
+'-x',
+'c++',
+'-DBOOST_COROUTINES_NO_DEPRECATION_WARNING=1',
+'-DGTEST_HAS_TR1_TUPLE=0',
+'-DGTEST_USE_OWN_TR1_TUPLE=0',
+'-isystem',
+'/usr/local/include',
+'-I',
+project_dir,
+'-I',
+os.path.join(project_dir, 'build')
+]
+
+if hunter_install_dir:
+    flags += ['-I', hunter_install_dir]
+
+compilation_database_folder = os.path.join(project_dir, 'build')
+
+if os.path.exists( compilation_database_folder ):
+  database = ycm_core.CompilationDatabase( compilation_database_folder )
+else:
+  database = None
+
+SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
+
+
+def IsHeaderFile( filename ):
+  extension = os.path.splitext( filename )[ 1 ]
+  return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
+
+
+def GetCompilationInfoForFile( filename ):
+  # The compilation_commands.json file generated by CMake does not have entries
+  # for header files. So we do our best by asking the db for flags for a
+  # corresponding source file, if any. If one exists, the flags for that file
+  # should be good enough.
+  if IsHeaderFile( filename ):
+    basename = os.path.splitext( filename )[ 0 ]
+    for extension in SOURCE_EXTENSIONS:
+      replacement_file = basename + extension
+      if os.path.exists( replacement_file ):
+        compilation_info = database.GetCompilationInfoForFile(
+          replacement_file )
+        if compilation_info.compiler_flags_:
+          return compilation_info
+    return None
+  return database.GetCompilationInfoForFile( filename )
+
+
+def FlagsForFile( filename, **kwargs ):
+  if not database:
+    return {
+      'flags': flags,
+      'include_paths_relative_to_dir': DirectoryOfThisScript()
+    }
+
+  compilation_info = GetCompilationInfoForFile( filename )
+  if not compilation_info:
+    return None
+
+  # Bear in mind that compilation_info.compiler_flags_ does NOT return a
+  # python list, but a "list-like" StringVec object.
+  final_flags = list( compilation_info.compiler_flags_ )
+
+  return {
+    'flags': final_flags,
+    'include_paths_relative_to_dir': compilation_info.compiler_working_dir_
+  }