mirror of
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cd9e92309d
Update script to generate list.rst in format that is in-sync with gen-static-analyzer-docs.py. Re-generate list.rst.
663 lines
24 KiB
Python
Executable File
663 lines
24 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# ===- add_new_check.py - clang-tidy check generator ---------*- python -*--===#
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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# ===-----------------------------------------------------------------------===#
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from __future__ import print_function
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from __future__ import unicode_literals
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import argparse
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import io
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import os
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import re
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import sys
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# Adapts the module's CMakelist file. Returns 'True' if it could add a new
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# entry and 'False' if the entry already existed.
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def adapt_cmake(module_path, check_name_camel):
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filename = os.path.join(module_path, "CMakeLists.txt")
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# The documentation files are encoded using UTF-8, however on Windows the
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# default encoding might be different (e.g. CP-1252). To make sure UTF-8 is
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# always used, use `io.open(filename, mode, encoding='utf8')` for reading and
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# writing files here and elsewhere.
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with io.open(filename, "r", encoding="utf8") as f:
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lines = f.readlines()
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cpp_file = check_name_camel + ".cpp"
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# Figure out whether this check already exists.
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for line in lines:
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if line.strip() == cpp_file:
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return False
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print("Updating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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cpp_found = False
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file_added = False
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for line in lines:
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cpp_line = line.strip().endswith(".cpp")
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if (not file_added) and (cpp_line or cpp_found):
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cpp_found = True
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if (line.strip() > cpp_file) or (not cpp_line):
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f.write(" " + cpp_file + "\n")
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file_added = True
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f.write(line)
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return True
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# Adds a header for the new check.
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def write_header(module_path, module, namespace, check_name, check_name_camel):
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filename = os.path.join(module_path, check_name_camel) + ".h"
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print("Creating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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header_guard = (
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"LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_"
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+ module.upper()
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+ "_"
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+ check_name_camel.upper()
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+ "_H"
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)
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f.write("//===--- ")
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f.write(os.path.basename(filename))
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f.write(" - clang-tidy ")
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f.write("-" * max(0, 42 - len(os.path.basename(filename))))
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f.write("*- C++ -*-===//")
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f.write(
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"""
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef %(header_guard)s
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#define %(header_guard)s
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#include "../ClangTidyCheck.h"
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namespace clang::tidy::%(namespace)s {
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/// FIXME: Write a short description.
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///
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/// For the user-facing documentation see:
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/// http://clang.llvm.org/extra/clang-tidy/checks/%(module)s/%(check_name)s.html
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class %(check_name_camel)s : public ClangTidyCheck {
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public:
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%(check_name_camel)s(StringRef Name, ClangTidyContext *Context)
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: ClangTidyCheck(Name, Context) {}
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void registerMatchers(ast_matchers::MatchFinder *Finder) override;
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void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
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};
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} // namespace clang::tidy::%(namespace)s
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#endif // %(header_guard)s
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"""
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% {
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"header_guard": header_guard,
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"check_name_camel": check_name_camel,
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"check_name": check_name,
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"module": module,
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"namespace": namespace,
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}
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)
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# Adds the implementation of the new check.
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def write_implementation(module_path, module, namespace, check_name_camel):
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filename = os.path.join(module_path, check_name_camel) + ".cpp"
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print("Creating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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f.write("//===--- ")
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f.write(os.path.basename(filename))
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f.write(" - clang-tidy ")
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f.write("-" * max(0, 51 - len(os.path.basename(filename))))
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f.write("-===//")
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f.write(
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"""
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "%(check_name)s.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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using namespace clang::ast_matchers;
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namespace clang::tidy::%(namespace)s {
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void %(check_name)s::registerMatchers(MatchFinder *Finder) {
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// FIXME: Add matchers.
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Finder->addMatcher(functionDecl().bind("x"), this);
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}
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void %(check_name)s::check(const MatchFinder::MatchResult &Result) {
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// FIXME: Add callback implementation.
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const auto *MatchedDecl = Result.Nodes.getNodeAs<FunctionDecl>("x");
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if (!MatchedDecl->getIdentifier() || MatchedDecl->getName().startswith("awesome_"))
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return;
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diag(MatchedDecl->getLocation(), "function %%0 is insufficiently awesome")
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<< MatchedDecl
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<< FixItHint::CreateInsertion(MatchedDecl->getLocation(), "awesome_");
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diag(MatchedDecl->getLocation(), "insert 'awesome'", DiagnosticIDs::Note);
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}
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} // namespace clang::tidy::%(namespace)s
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"""
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% {"check_name": check_name_camel, "module": module, "namespace": namespace}
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)
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# Returns the source filename that implements the module.
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def get_module_filename(module_path, module):
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modulecpp = list(
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filter(
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lambda p: p.lower() == module.lower() + "tidymodule.cpp",
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os.listdir(module_path),
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)
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)[0]
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return os.path.join(module_path, modulecpp)
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# Modifies the module to include the new check.
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def adapt_module(module_path, module, check_name, check_name_camel):
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filename = get_module_filename(module_path, module)
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with io.open(filename, "r", encoding="utf8") as f:
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lines = f.readlines()
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print("Updating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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header_added = False
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header_found = False
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check_added = False
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check_fq_name = module + "-" + check_name
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check_decl = (
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" CheckFactories.registerCheck<"
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+ check_name_camel
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+ '>(\n "'
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+ check_fq_name
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+ '");\n'
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)
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lines = iter(lines)
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try:
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while True:
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line = next(lines)
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if not header_added:
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match = re.search('#include "(.*)"', line)
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if match:
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header_found = True
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if match.group(1) > check_name_camel:
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header_added = True
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f.write('#include "' + check_name_camel + '.h"\n')
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elif header_found:
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header_added = True
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f.write('#include "' + check_name_camel + '.h"\n')
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if not check_added:
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if line.strip() == "}":
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check_added = True
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f.write(check_decl)
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else:
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match = re.search(
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'registerCheck<(.*)> *\( *(?:"([^"]*)")?', line
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)
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prev_line = None
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if match:
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current_check_name = match.group(2)
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if current_check_name is None:
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# If we didn't find the check name on this line, look on the
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# next one.
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prev_line = line
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line = next(lines)
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match = re.search(' *"([^"]*)"', line)
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if match:
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current_check_name = match.group(1)
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if current_check_name > check_fq_name:
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check_added = True
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f.write(check_decl)
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if prev_line:
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f.write(prev_line)
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f.write(line)
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except StopIteration:
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pass
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# Adds a release notes entry.
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def add_release_notes(module_path, module, check_name):
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check_name_dashes = module + "-" + check_name
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filename = os.path.normpath(
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os.path.join(module_path, "../../docs/ReleaseNotes.rst")
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)
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with io.open(filename, "r", encoding="utf8") as f:
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lines = f.readlines()
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lineMatcher = re.compile("New checks")
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nextSectionMatcher = re.compile("New check aliases")
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checkMatcher = re.compile("- New :doc:`(.*)")
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print("Updating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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note_added = False
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header_found = False
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add_note_here = False
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for line in lines:
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if not note_added:
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match = lineMatcher.match(line)
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match_next = nextSectionMatcher.match(line)
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match_check = checkMatcher.match(line)
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if match_check:
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last_check = match_check.group(1)
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if last_check > check_name_dashes:
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add_note_here = True
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if match_next:
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add_note_here = True
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if match:
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header_found = True
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f.write(line)
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continue
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if line.startswith("^^^^"):
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f.write(line)
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continue
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if header_found and add_note_here:
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if not line.startswith("^^^^"):
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f.write(
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"""- New :doc:`%s
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<clang-tidy/checks/%s/%s>` check.
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FIXME: add release notes.
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"""
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% (check_name_dashes, module, check_name)
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)
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note_added = True
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f.write(line)
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# Adds a test for the check.
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def write_test(module_path, module, check_name, test_extension):
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check_name_dashes = module + "-" + check_name
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filename = os.path.normpath(
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os.path.join(
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module_path,
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"..",
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"..",
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"test",
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"clang-tidy",
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"checkers",
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module,
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check_name + "." + test_extension,
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)
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)
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print("Creating %s..." % filename)
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with io.open(filename, "w", encoding="utf8", newline="\n") as f:
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f.write(
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"""// RUN: %%check_clang_tidy %%s %(check_name_dashes)s %%t
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// FIXME: Add something that triggers the check here.
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void f();
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: function 'f' is insufficiently awesome [%(check_name_dashes)s]
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// FIXME: Verify the applied fix.
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// * Make the CHECK patterns specific enough and try to make verified lines
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// unique to avoid incorrect matches.
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// * Use {{}} for regular expressions.
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// CHECK-FIXES: {{^}}void awesome_f();{{$}}
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// FIXME: Add something that doesn't trigger the check here.
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void awesome_f2();
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"""
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% {"check_name_dashes": check_name_dashes}
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)
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def get_actual_filename(dirname, filename):
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if not os.path.isdir(dirname):
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return ""
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name = os.path.join(dirname, filename)
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if os.path.isfile(name):
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return name
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caselessname = filename.lower()
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for file in os.listdir(dirname):
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if file.lower() == caselessname:
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return os.path.join(dirname, file)
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return ""
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# Recreates the list of checks in the docs/clang-tidy/checks directory.
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def update_checks_list(clang_tidy_path):
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docs_dir = os.path.join(clang_tidy_path, "../docs/clang-tidy/checks")
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filename = os.path.normpath(os.path.join(docs_dir, "list.rst"))
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# Read the content of the current list.rst file
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with io.open(filename, "r", encoding="utf8") as f:
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lines = f.readlines()
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# Get all existing docs
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doc_files = []
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for subdir in filter(
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lambda s: os.path.isdir(os.path.join(docs_dir, s)), os.listdir(docs_dir)
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):
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for file in filter(
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lambda s: s.endswith(".rst"), os.listdir(os.path.join(docs_dir, subdir))
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):
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doc_files.append([subdir, file])
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doc_files.sort()
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# We couldn't find the source file from the check name, so try to find the
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# class name that corresponds to the check in the module file.
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def filename_from_module(module_name, check_name):
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module_path = os.path.join(clang_tidy_path, module_name)
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if not os.path.isdir(module_path):
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return ""
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module_file = get_module_filename(module_path, module_name)
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if not os.path.isfile(module_file):
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return ""
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with io.open(module_file, "r") as f:
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code = f.read()
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full_check_name = module_name + "-" + check_name
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name_pos = code.find('"' + full_check_name + '"')
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if name_pos == -1:
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return ""
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stmt_end_pos = code.find(";", name_pos)
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if stmt_end_pos == -1:
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return ""
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stmt_start_pos = code.rfind(";", 0, name_pos)
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if stmt_start_pos == -1:
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stmt_start_pos = code.rfind("{", 0, name_pos)
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if stmt_start_pos == -1:
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return ""
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stmt = code[stmt_start_pos + 1 : stmt_end_pos]
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matches = re.search('registerCheck<([^>:]*)>\(\s*"([^"]*)"\s*\)', stmt)
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if matches and matches[2] == full_check_name:
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class_name = matches[1]
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if "::" in class_name:
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parts = class_name.split("::")
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class_name = parts[-1]
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class_path = os.path.join(
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clang_tidy_path, module_name, "..", *parts[0:-1]
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)
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else:
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class_path = os.path.join(clang_tidy_path, module_name)
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return get_actual_filename(class_path, class_name + ".cpp")
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return ""
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# Examine code looking for a c'tor definition to get the base class name.
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def get_base_class(code, check_file):
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check_class_name = os.path.splitext(os.path.basename(check_file))[0]
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ctor_pattern = check_class_name + "\([^:]*\)\s*:\s*([A-Z][A-Za-z0-9]*Check)\("
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matches = re.search("\s+" + check_class_name + "::" + ctor_pattern, code)
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# The constructor might be inline in the header.
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if not matches:
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header_file = os.path.splitext(check_file)[0] + ".h"
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if not os.path.isfile(header_file):
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return ""
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with io.open(header_file, encoding="utf8") as f:
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code = f.read()
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matches = re.search(" " + ctor_pattern, code)
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if matches and matches[1] != "ClangTidyCheck":
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return matches[1]
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return ""
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# Some simple heuristics to figure out if a check has an autofix or not.
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def has_fixits(code):
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for needle in [
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"FixItHint",
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"ReplacementText",
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"fixit",
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"TransformerClangTidyCheck",
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]:
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if needle in code:
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return True
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return False
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# Try to figure out of the check supports fixits.
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def has_auto_fix(check_name):
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dirname, _, check_name = check_name.partition("-")
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check_file = get_actual_filename(
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os.path.join(clang_tidy_path, dirname),
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get_camel_check_name(check_name) + ".cpp",
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)
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if not os.path.isfile(check_file):
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# Some older checks don't end with 'Check.cpp'
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check_file = get_actual_filename(
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os.path.join(clang_tidy_path, dirname),
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get_camel_name(check_name) + ".cpp",
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)
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if not os.path.isfile(check_file):
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# Some checks aren't in a file based on the check name.
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check_file = filename_from_module(dirname, check_name)
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if not check_file or not os.path.isfile(check_file):
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return ""
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with io.open(check_file, encoding="utf8") as f:
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code = f.read()
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if has_fixits(code):
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return ' "Yes"'
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base_class = get_base_class(code, check_file)
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if base_class:
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base_file = os.path.join(clang_tidy_path, dirname, base_class + ".cpp")
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if os.path.isfile(base_file):
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with io.open(base_file, encoding="utf8") as f:
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code = f.read()
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if has_fixits(code):
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return ' "Yes"'
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return ""
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def process_doc(doc_file):
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check_name = doc_file[0] + "-" + doc_file[1].replace(".rst", "")
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with io.open(os.path.join(docs_dir, *doc_file), "r", encoding="utf8") as doc:
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content = doc.read()
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match = re.search(".*:orphan:.*", content)
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if match:
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# Orphan page, don't list it.
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return "", ""
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match = re.search(".*:http-equiv=refresh: \d+;URL=(.*).html(.*)", content)
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# Is it a redirect?
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return check_name, match
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def format_link(doc_file):
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check_name, match = process_doc(doc_file)
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if not match and check_name and not check_name.startswith("clang-analyzer-"):
|
|
return " `%(check_name)s <%(module)s/%(check)s.html>`_,%(autofix)s\n" % {
|
|
"check_name": check_name,
|
|
"module": doc_file[0],
|
|
"check": doc_file[1].replace(".rst", ""),
|
|
"autofix": has_auto_fix(check_name),
|
|
}
|
|
else:
|
|
return ""
|
|
|
|
def format_link_alias(doc_file):
|
|
check_name, match = process_doc(doc_file)
|
|
if (match or (check_name.startswith("clang-analyzer-"))) and check_name:
|
|
module = doc_file[0]
|
|
check_file = doc_file[1].replace(".rst", "")
|
|
if not match or match.group(1) == "https://clang.llvm.org/docs/analyzer/checkers":
|
|
title = "Clang Static Analyzer " + check_file
|
|
# Preserve the anchor in checkers.html from group 2.
|
|
target = "" if not match else match.group(1) + ".html" + match.group(2)
|
|
autofix = ""
|
|
else:
|
|
redirect_parts = re.search("^\.\./([^/]*)/([^/]*)$", match.group(1))
|
|
title = redirect_parts[1] + "-" + redirect_parts[2]
|
|
target = redirect_parts[1] + "/" + redirect_parts[2] + ".html"
|
|
autofix = has_auto_fix(title)
|
|
|
|
if target:
|
|
# The checker is just a redirect.
|
|
return (
|
|
" `%(check_name)s <%(module)s/%(check_file)s.html>`_, `%(title)s <%(target)s>`_,%(autofix)s\n"
|
|
% {
|
|
"check_name": check_name,
|
|
"module": module,
|
|
"check_file": check_file,
|
|
"target": target,
|
|
"title": title,
|
|
"autofix": autofix,
|
|
})
|
|
else:
|
|
# The checker is just a alias without redirect.
|
|
return (
|
|
" `%(check_name)s <%(module)s/%(check_file)s.html>`_, %(title)s,%(autofix)s\n"
|
|
% {
|
|
"check_name": check_name,
|
|
"module": module,
|
|
"check_file": check_file,
|
|
"target": target,
|
|
"title": title,
|
|
"autofix": autofix,
|
|
})
|
|
return ""
|
|
|
|
checks = map(format_link, doc_files)
|
|
checks_alias = map(format_link_alias, doc_files)
|
|
|
|
print("Updating %s..." % filename)
|
|
with io.open(filename, "w", encoding="utf8", newline="\n") as f:
|
|
for line in lines:
|
|
f.write(line)
|
|
if line.strip() == ".. csv-table::":
|
|
# We dump the checkers
|
|
f.write(' :header: "Name", "Offers fixes"\n\n')
|
|
f.writelines(checks)
|
|
# and the aliases
|
|
f.write("\n\n")
|
|
f.write(".. csv-table:: Aliases..\n")
|
|
f.write(' :header: "Name", "Redirect", "Offers fixes"\n\n')
|
|
f.writelines(checks_alias)
|
|
break
|
|
|
|
|
|
# Adds a documentation for the check.
|
|
def write_docs(module_path, module, check_name):
|
|
check_name_dashes = module + "-" + check_name
|
|
filename = os.path.normpath(
|
|
os.path.join(
|
|
module_path, "../../docs/clang-tidy/checks/", module, check_name + ".rst"
|
|
)
|
|
)
|
|
print("Creating %s..." % filename)
|
|
with io.open(filename, "w", encoding="utf8", newline="\n") as f:
|
|
f.write(
|
|
""".. title:: clang-tidy - %(check_name_dashes)s
|
|
|
|
%(check_name_dashes)s
|
|
%(underline)s
|
|
|
|
FIXME: Describe what patterns does the check detect and why. Give examples.
|
|
"""
|
|
% {
|
|
"check_name_dashes": check_name_dashes,
|
|
"underline": "=" * len(check_name_dashes),
|
|
}
|
|
)
|
|
|
|
|
|
def get_camel_name(check_name):
|
|
return "".join(map(lambda elem: elem.capitalize(), check_name.split("-")))
|
|
|
|
|
|
def get_camel_check_name(check_name):
|
|
return get_camel_name(check_name) + "Check"
|
|
|
|
|
|
def main():
|
|
language_to_extension = {
|
|
"c": "c",
|
|
"c++": "cpp",
|
|
"objc": "m",
|
|
"objc++": "mm",
|
|
}
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument(
|
|
"--update-docs",
|
|
action="store_true",
|
|
help="just update the list of documentation files, then exit",
|
|
)
|
|
parser.add_argument(
|
|
"--language",
|
|
help="language to use for new check (defaults to c++)",
|
|
choices=language_to_extension.keys(),
|
|
default="c++",
|
|
metavar="LANG",
|
|
)
|
|
parser.add_argument(
|
|
"module",
|
|
nargs="?",
|
|
help="module directory under which to place the new tidy check (e.g., misc)",
|
|
)
|
|
parser.add_argument(
|
|
"check", nargs="?", help="name of new tidy check to add (e.g. foo-do-the-stuff)"
|
|
)
|
|
args = parser.parse_args()
|
|
|
|
if args.update_docs:
|
|
update_checks_list(os.path.dirname(sys.argv[0]))
|
|
return
|
|
|
|
if not args.module or not args.check:
|
|
print("Module and check must be specified.")
|
|
parser.print_usage()
|
|
return
|
|
|
|
module = args.module
|
|
check_name = args.check
|
|
check_name_camel = get_camel_check_name(check_name)
|
|
if check_name.startswith(module):
|
|
print(
|
|
'Check name "%s" must not start with the module "%s". Exiting.'
|
|
% (check_name, module)
|
|
)
|
|
return
|
|
clang_tidy_path = os.path.dirname(sys.argv[0])
|
|
module_path = os.path.join(clang_tidy_path, module)
|
|
|
|
if not adapt_cmake(module_path, check_name_camel):
|
|
return
|
|
|
|
# Map module names to namespace names that don't conflict with widely used top-level namespaces.
|
|
if module == "llvm":
|
|
namespace = module + "_check"
|
|
else:
|
|
namespace = module
|
|
|
|
write_header(module_path, module, namespace, check_name, check_name_camel)
|
|
write_implementation(module_path, module, namespace, check_name_camel)
|
|
adapt_module(module_path, module, check_name, check_name_camel)
|
|
add_release_notes(module_path, module, check_name)
|
|
test_extension = language_to_extension.get(args.language)
|
|
write_test(module_path, module, check_name, test_extension)
|
|
write_docs(module_path, module, check_name)
|
|
update_checks_list(clang_tidy_path)
|
|
print("Done. Now it's your turn!")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|