|
| 1 | +import os |
| 2 | + |
| 3 | +import ycm_core |
| 4 | + |
| 5 | +# These are the compilation flags that will be used in case there's no |
| 6 | +# compilation database set (by default, one is not set). |
| 7 | +# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR. |
| 8 | +flags = [ |
| 9 | + "-Wall", |
| 10 | + "-Werror", |
| 11 | + "-pedantic-errors", |
| 12 | + "-std=c++0x", |
| 13 | + "-fno-strict-aliasing", |
| 14 | + "-O3", |
| 15 | + "-DNDEBUG", |
| 16 | + # ...and the same thing goes for the magic -x option which specifies the |
| 17 | + # language that the files to be compiled are written in. This is mostly |
| 18 | + # relevant for c++ headers. |
| 19 | + # For a C project, you would set this to 'c' instead of 'c++'. |
| 20 | + "-x", |
| 21 | + "c++", |
| 22 | + "-I", |
| 23 | + "include", |
| 24 | + "-isystem", |
| 25 | + "/usr/include", |
| 26 | + "-isystem", |
| 27 | + "/usr/local/include", |
| 28 | +] |
| 29 | + |
| 30 | + |
| 31 | +# Set this to the absolute path to the folder (NOT the file!) containing the |
| 32 | +# compile_commands.json file to use that instead of 'flags'. See here for |
| 33 | +# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html |
| 34 | +# |
| 35 | +# Most projects will NOT need to set this to anything; you can just change the |
| 36 | +# 'flags' list of compilation flags. Notice that YCM itself uses that approach. |
| 37 | +compilation_database_folder = "" |
| 38 | + |
| 39 | +if os.path.exists(compilation_database_folder): |
| 40 | + database = ycm_core.CompilationDatabase(compilation_database_folder) |
| 41 | +else: |
| 42 | + database = None |
| 43 | + |
| 44 | +SOURCE_EXTENSIONS = [".cc"] |
| 45 | + |
| 46 | + |
| 47 | +def DirectoryOfThisScript(): |
| 48 | + return os.path.dirname(os.path.abspath(__file__)) |
| 49 | + |
| 50 | + |
| 51 | +def MakeRelativePathsInFlagsAbsolute(flags, working_directory): |
| 52 | + if not working_directory: |
| 53 | + return list(flags) |
| 54 | + new_flags = [] |
| 55 | + make_next_absolute = False |
| 56 | + path_flags = ["-isystem", "-I", "-iquote", "--sysroot="] |
| 57 | + for flag in flags: |
| 58 | + new_flag = flag |
| 59 | + |
| 60 | + if make_next_absolute: |
| 61 | + make_next_absolute = False |
| 62 | + if not flag.startswith("/"): |
| 63 | + new_flag = os.path.join(working_directory, flag) |
| 64 | + |
| 65 | + for path_flag in path_flags: |
| 66 | + if flag == path_flag: |
| 67 | + make_next_absolute = True |
| 68 | + break |
| 69 | + |
| 70 | + if flag.startswith(path_flag): |
| 71 | + path = flag[len(path_flag) :] |
| 72 | + new_flag = path_flag + os.path.join(working_directory, path) |
| 73 | + break |
| 74 | + |
| 75 | + if new_flag: |
| 76 | + new_flags.append(new_flag) |
| 77 | + return new_flags |
| 78 | + |
| 79 | + |
| 80 | +def IsHeaderFile(filename): |
| 81 | + extension = os.path.splitext(filename)[1] |
| 82 | + return extension in [".h", ".hxx", ".hpp", ".hh"] |
| 83 | + |
| 84 | + |
| 85 | +def GetCompilationInfoForFile(filename): |
| 86 | + # The compilation_commands.json file generated by CMake does not have |
| 87 | + # entries for header files. So we do our best by asking the db for flags for |
| 88 | + # a corresponding source file, if any. If one exists, the flags for that |
| 89 | + # file should be good enough. |
| 90 | + if IsHeaderFile(filename): |
| 91 | + basename = os.path.splitext(filename)[0] |
| 92 | + for extension in SOURCE_EXTENSIONS: |
| 93 | + replacement_file = basename + extension |
| 94 | + if os.path.exists(replacement_file): |
| 95 | + compilation_info = database.GetCompilationInfoForFile( |
| 96 | + replacement_file |
| 97 | + ) |
| 98 | + if compilation_info.compiler_flags_: |
| 99 | + return compilation_info |
| 100 | + return None |
| 101 | + return database.GetCompilationInfoForFile(filename) |
| 102 | + |
| 103 | + |
| 104 | +def FlagsForFile(filename, **kwargs): |
| 105 | + if database: |
| 106 | + # Bear in mind that compilation_info.compiler_flags_ does NOT return a |
| 107 | + # python list, but a "list-like" StringVec object |
| 108 | + compilation_info = GetCompilationInfoForFile(filename) |
| 109 | + if not compilation_info: |
| 110 | + return None |
| 111 | + |
| 112 | + final_flags = MakeRelativePathsInFlagsAbsolute( |
| 113 | + compilation_info.compiler_flags_, |
| 114 | + compilation_info.compiler_working_dir_, |
| 115 | + ) |
| 116 | + else: |
| 117 | + relative_to = DirectoryOfThisScript() |
| 118 | + final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to) |
| 119 | + |
| 120 | + return {"flags": final_flags, "do_cache": True} |
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