conans/client/generators/ycm.py
import json
from conans.model import Generator
class YouCompleteMeGenerator(Generator):
template = '''
# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
# Here's the license text for this file:
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org/>
import os
import json
import ycm_core
import logging
_logger = logging.getLogger(__name__)
def DirectoryOfThisScript():
return os.path.dirname( os.path.abspath( __file__ ) )
# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
'-x', 'c++'
]
conan_flags = json.loads(open("conan_ycm_flags.json", "r").read())
flags.extend(conan_flags["flags"])
flags.extend(conan_flags["defines"])
flags.extend(conan_flags["includes"])
# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# You can get CMake to generate this file for you by adding:
# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = os.path.join(DirectoryOfThisScript(), 'Debug')
if os.path.exists( compilation_database_folder ):
database = ycm_core.CompilationDatabase( compilation_database_folder )
if not database.DatabaseSuccessfullyLoaded():
_logger.warn("Failed to load database")
database = None
else:
database = None
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
def GetAbsolutePath(include_path, working_directory):
if os.path.isabs(include_path):
return include_path
return os.path.join(working_directory, include_path)
def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
if not working_directory:
return list( flags )
new_flags = []
make_next_absolute = False
path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
for flag in flags:
new_flag = flag
if make_next_absolute:
make_next_absolute = False
new_flag = GetAbsolutePath(flag, working_directory)
for path_flag in path_flags:
if flag == path_flag:
make_next_absolute = True
break
if flag.startswith( path_flag ):
path = flag[ len( path_flag ): ]
new_flag = flag[:len(path_flag)] + GetAbsolutePath(path, working_directory)
break
if new_flag:
new_flags.append( new_flag )
return new_flags
def IsHeaderFile( filename ):
extension = os.path.splitext( filename )[ 1 ]
return extension.lower() 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 Settings( filename, **kwargs ):
relative_to = None
compiler_flags = None
if database:
# Bear in mind that compilation_info.compiler_flags_ does NOT return a
# python list, but a "list-like" StringVec object
compilation_info = GetCompilationInfoForFile( filename )
if compilation_info is None:
relative_to = DirectoryOfThisScript()
compiler_flags = flags
else:
relative_to = compilation_info.compiler_working_dir_
compiler_flags = compilation_info.compiler_flags_
else:
relative_to = DirectoryOfThisScript()
compiler_flags = flags
final_flags = MakeRelativePathsInFlagsAbsolute( compiler_flags, relative_to )
for flag in final_flags:
if flag.startswith("-W"):
final_flags.remove(flag)
_logger.info("Final flags for %s are %s" % (filename, ' '.join(final_flags)))
return {{
'flags': final_flags + ["-I/usr/include", "-I/usr/include/c++/{cxx_version}"],
'do_cache': True
}}
'''
@property
def filename(self):
pass
@property
def content(self):
def prefixed(prefix, values):
return [prefix + x for x in values]
conan_flags = {
"includes": prefixed("-isystem", self.deps_build_info.include_paths),
"defines": prefixed("-D", self.deps_build_info.defines),
"flags": self.deps_build_info.cxxflags
}
cxx_version = ''
try:
cxx_version = str(self.settings.compiler.version).split('.')[0]
except Exception:
pass
ycm_data = self.template.format(cxx_version=cxx_version)
return {"conan_ycm_extra_conf.py": ycm_data,
"conan_ycm_flags.json": json.dumps(conan_flags, indent=2)}