diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 17:20:00 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 17:20:00 +0000 |
commit | 8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch) | |
tree | 4099e8021376c7d8c05bdf8503093d80e9c7bad0 /third_party/waf/waflib/extras/clang_compilation_database.py | |
parent | Initial commit. (diff) | |
download | samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip |
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/waf/waflib/extras/clang_compilation_database.py')
-rw-r--r-- | third_party/waf/waflib/extras/clang_compilation_database.py | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/third_party/waf/waflib/extras/clang_compilation_database.py b/third_party/waf/waflib/extras/clang_compilation_database.py new file mode 100644 index 0000000..bd29db9 --- /dev/null +++ b/third_party/waf/waflib/extras/clang_compilation_database.py @@ -0,0 +1,137 @@ +#!/usr/bin/env python +# encoding: utf-8 +# Christoph Koke, 2013 +# Alibek Omarov, 2019 + +""" +Writes the c and cpp compile commands into build/compile_commands.json +see http://clang.llvm.org/docs/JSONCompilationDatabase.html + +Usage: + + Load this tool in `options` to be able to generate database + by request in command-line and before build: + + $ waf clangdb + + def options(opt): + opt.load('clang_compilation_database') + + Otherwise, load only in `configure` to generate it always before build. + + def configure(conf): + conf.load('compiler_cxx') + ... + conf.load('clang_compilation_database') +""" + +from waflib import Logs, TaskGen, Task, Build, Scripting + +Task.Task.keep_last_cmd = True + +class ClangDbContext(Build.BuildContext): + '''generates compile_commands.json by request''' + cmd = 'clangdb' + + def write_compilation_database(self): + """ + Write the clang compilation database as JSON + """ + database_file = self.bldnode.make_node('compile_commands.json') + Logs.info('Build commands will be stored in %s', database_file.path_from(self.path)) + try: + root = database_file.read_json() + except IOError: + root = [] + clang_db = dict((x['file'], x) for x in root) + for task in self.clang_compilation_database_tasks: + try: + cmd = task.last_cmd + except AttributeError: + continue + f_node = task.inputs[0] + filename = f_node.path_from(task.get_cwd()) + entry = { + "directory": task.get_cwd().abspath(), + "arguments": cmd, + "file": filename, + } + clang_db[filename] = entry + root = list(clang_db.values()) + database_file.write_json(root) + + def execute(self): + """ + Build dry run + """ + self.restore() + self.cur_tasks = [] + self.clang_compilation_database_tasks = [] + + if not self.all_envs: + self.load_envs() + + self.recurse([self.run_dir]) + self.pre_build() + + # we need only to generate last_cmd, so override + # exec_command temporarily + def exec_command(self, *k, **kw): + return 0 + + for g in self.groups: + for tg in g: + try: + f = tg.post + except AttributeError: + pass + else: + f() + + if isinstance(tg, Task.Task): + lst = [tg] + else: lst = tg.tasks + for tsk in lst: + if tsk.__class__.__name__ == "swig": + tsk.runnable_status() + if hasattr(tsk, 'more_tasks'): + lst.extend(tsk.more_tasks) + # Not all dynamic tasks can be processed, in some cases + # one may have to call the method "run()" like this: + #elif tsk.__class__.__name__ == 'src2c': + # tsk.run() + # if hasattr(tsk, 'more_tasks'): + # lst.extend(tsk.more_tasks) + + tup = tuple(y for y in [Task.classes.get(x) for x in ('c', 'cxx')] if y) + if isinstance(tsk, tup): + self.clang_compilation_database_tasks.append(tsk) + tsk.nocache = True + old_exec = tsk.exec_command + tsk.exec_command = exec_command + tsk.run() + tsk.exec_command = old_exec + + self.write_compilation_database() + +EXECUTE_PATCHED = False +def patch_execute(): + global EXECUTE_PATCHED + + if EXECUTE_PATCHED: + return + + def new_execute_build(self): + """ + Invoke clangdb command before build + """ + if self.cmd.startswith('build'): + Scripting.run_command(self.cmd.replace('build','clangdb')) + + old_execute_build(self) + + old_execute_build = getattr(Build.BuildContext, 'execute_build', None) + setattr(Build.BuildContext, 'execute_build', new_execute_build) + EXECUTE_PATCHED = True + +patch_execute() |