60f76155a7
compile_commands.json (a.k.a. "compdb", https://clang.llvm.org/docs/JSONCompilationDatabase.html) is intended to help stand-alone C-family LSP servers index the codebase as precisely as possible. The actively maintained LSP servers with good C++ support are: - Clangd (https://clangd.llvm.org/) - CCLS (https://github.com/MaskRay/ccls) This change causes a successful invocation of configure.py to create a unified Scylla+Seastar+Abseil compdb for every selected build mode, and to leave a valid symlink in the source root (if a valid symlink already exists, it will be left alone). Signed-off-by: Michael Livshin <michael.livshin@scylladb.com> Closes #9558
79 lines
2.4 KiB
Python
Executable File
79 lines
2.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2021 ScyllaDB
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#
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#
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# This file is part of Scylla.
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#
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# Scylla is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Scylla is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# Called by configure.py to merge several compdbs into one, so your
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# favourite compatible code indexer can present you with a relevant
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# maximally-complete unified index.
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#
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# Usage: merge-compdb.py build/{debug,release,dev,sanitize} [input...]
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#
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# Glue inputs, which must be compdb ("compile_command.json") files,
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# together, filtering out anything that is not indexable or not built
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# under the given prefix, and write the result to stdout.
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#
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# An input is either a file name or "-" for stdin.
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#
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# configure.py calls this with "-" for the ninja-generated scylla
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# compdb and mode-specific seastar & abseil compdbs.
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#
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import json
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import logging
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import re
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import sys
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prefix = sys.argv[1]
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inputs = sys.argv[2:]
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def read_input(fname):
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try:
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if fname == '-':
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f = sys.stdin
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else:
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f = open(fname)
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return json.load(f)
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except Exception as e:
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logging.error('failed to parse %s: %s', fname, e)
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return [];
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finally:
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if fname != '-':
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f.close()
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def is_indexable(e):
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return any(e['file'].endswith('.' + suffix) for suffix in ['c', 'C', 'cc', 'cxx'])
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# We can only definitely say whether an entry is built under the right
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# prefix when it has an "output" field, so those without are assumed
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# to be OK. This works for our usage, where only the "-" input (which
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# results from "ninja -t compdb") has 'output' entries _and_ needs to
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# be filtered in the first place.
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def is_relevant(e):
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return ('output' not in e) or (e['output'].startswith(prefix))
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json.dump([e for fname in inputs
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for e in read_input(fname) if is_indexable(e) and is_relevant(e)],
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sys.stdout, indent=True)
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