hokein updated this revision to Diff 52798.
hokein added a comment.
More comments.
http://reviews.llvm.org/D18694
Files:
clang-tidy/ClangTidyOptions.cpp
clang-tidy/ClangTidyOptions.h
clang-tidy/tool/ClangTidyMain.cpp
test/clang-tidy/Inputs/explain-config/.clang-tidy
test/clang-tidy/explain-checks.cpp
Index: test/clang-tidy/explain-checks.cpp
===================================================================
--- /dev/null
+++ test/clang-tidy/explain-checks.cpp
@@ -0,0 +1,12 @@
+// RUN: clang-tidy -checks=-*,modernize-use-nullptr -explain-config | FileCheck --check-prefix=CHECK-MESSAGE1 %s
+// RUN: clang-tidy -config="{Checks: '-*,modernize-use-nullptr'}" -explain-config | FileCheck --check-prefix=CHECK-MESSAGE2 %s
+// RUN: clang-tidy -checks=modernize-use-nullptr -config="{Checks: '-*,modernize-use-nullptr'}" -explain-config | FileCheck --check-prefix=CHECK-MESSAGE3 %s
+// RUN: clang-tidy -checks=modernize-use-nullptr -config="{Checks: '-*,-modernize-use-nullptr'}" %S/Inputs/explain-config/a.cc -explain-config | FileCheck --check-prefix=CHECK-MESSAGE4 %s
+// RUN: clang-tidy -checks=modernize-use-nullptr -config="{Checks: '-*,modernize-*'}" -explain-config | FileCheck --check-prefix=CHECK-MESSAGE5 %s
+// RUN: clang-tidy -explain-config %S/Inputs/explain-config/a.cc | grep "'modernize-use-nullptr' is enabled in the %S/Inputs/explain-config/.clang-tidy."
+
+// CHECK-MESSAGE1: 'modernize-use-nullptr' is enabled in the command-line option '-checks'.
+// CHECK-MESSAGE2: 'modernize-use-nullptr' is enabled in the command-line option '-config'.
+// CHECK-MESSAGE3: 'modernize-use-nullptr' is enabled in the command-line option '-checks'.
+// CHECK-MESSAGE4: 'modernize-use-nullptr' is enabled in the command-line option '-checks'.
+// CHECK-MESSAGE5: 'modernize-use-nullptr' is enabled in the command-line option '-checks'.
Index: test/clang-tidy/Inputs/explain-config/.clang-tidy
===================================================================
--- /dev/null
+++ test/clang-tidy/Inputs/explain-config/.clang-tidy
@@ -0,0 +1 @@
+Checks: '-*,modernize-use-nullptr'
Index: clang-tidy/tool/ClangTidyMain.cpp
===================================================================
--- clang-tidy/tool/ClangTidyMain.cpp
+++ clang-tidy/tool/ClangTidyMain.cpp
@@ -128,6 +128,12 @@
)"),
cl::init(false), cl::cat(ClangTidyCategory));
+static cl::opt<bool> ExplainConfig("explain-config", cl::desc(R"(
+for each enabled check explains, where it is enabled, i.e. in clang-tidy binary,
+command line or a specific configuration file.
+)"),
+ cl::init(false), cl::cat(ClangTidyCategory));
+
static cl::opt<std::string> Config("config", cl::desc(R"(
Specifies a configuration in YAML/JSON format:
-config="{Checks: '*',
@@ -256,6 +262,8 @@
ClangTidyOptions DefaultOptions;
DefaultOptions.Checks = DefaultChecks;
+ DefaultOptions.CheckSources[ClangTidyOptions::DefaultBinary].push_back(
+ ClangTidyOptions::StringPair(DefaultChecks, "clang-tidy binary"));
DefaultOptions.WarningsAsErrors = "";
DefaultOptions.HeaderFilterRegex = HeaderFilter;
DefaultOptions.SystemHeaders = SystemHeaders;
@@ -266,8 +274,12 @@
DefaultOptions.User = llvm::sys::Process::GetEnv("USERNAME");
ClangTidyOptions OverrideOptions;
- if (Checks.getNumOccurrences() > 0)
+ if (Checks.getNumOccurrences() > 0) {
OverrideOptions.Checks = Checks;
+ OverrideOptions.CheckSources[ClangTidyOptions::ChecksCommandlineOption]
+ .push_back(ClangTidyOptions::StringPair(
+ Checks, "command-line option '-checks'"));
+ }
if (WarningsAsErrors.getNumOccurrences() > 0)
OverrideOptions.WarningsAsErrors = WarningsAsErrors;
if (HeaderFilter.getNumOccurrences() > 0)
@@ -280,6 +292,12 @@
if (!Config.empty()) {
if (llvm::ErrorOr<ClangTidyOptions> ParsedConfig =
parseConfiguration(Config)) {
+ if (ParsedConfig->Checks) {
+ ParsedConfig
+ ->CheckSources[ClangTidyOptions::ConfigCommandlineOptionOrFile]
+ .push_back(ClangTidyOptions::StringPair(
+ *ParsedConfig->Checks, "command-line option '-config'"));
+ }
return llvm::make_unique<DefaultOptionsProvider>(
GlobalOptions, ClangTidyOptions::getDefaults()
.mergeWith(DefaultOptions)
@@ -311,6 +329,29 @@
ClangTidyOptions EffectiveOptions = OptionsProvider->getOptions(FileName);
std::vector<std::string> EnabledChecks = getCheckNames(EffectiveOptions);
+ if (ExplainConfig) {
+ for (const std::string& Check : EnabledChecks) {
+ // Keeps the processing order of different check sources.
+ for (auto SourceType : {ClangTidyOptions::ChecksCommandlineOption,
+ ClangTidyOptions::ConfigCommandlineOptionOrFile,
+ ClangTidyOptions::DefaultBinary}) {
+ bool FindMatch = false;
+ for (auto It = EffectiveOptions.CheckSources[SourceType].rbegin();
+ It != EffectiveOptions.CheckSources[SourceType].rend(); ++It) {
+ if (GlobList(It->first).contains(Check)) {
+ llvm::outs() << "'" << Check << "' is enabled in the "
+ << It->second << ".\n";
+ FindMatch = true;
+ break;
+ }
+ if (FindMatch)
+ break;
+ }
+ }
+ }
+ return 0;
+ }
+
if (ListChecks) {
llvm::outs() << "Enabled checks:";
for (auto CheckName : EnabledChecks)
Index: clang-tidy/ClangTidyOptions.h
===================================================================
--- clang-tidy/ClangTidyOptions.h
+++ clang-tidy/ClangTidyOptions.h
@@ -87,6 +87,22 @@
/// \brief Key-value mapping used to store check-specific options.
OptionMap CheckOptions;
+ // The priority from low to high:
+ // DefaultBinary > ConfigCommandlineOptionOrFile > ChecksCommandlineOption
+ enum CheckSourceType {
+ DefaultBinary,
+ ConfigCommandlineOptionOrFile,
+ ChecksCommandlineOption,
+ CheckSourceTypeEnd
+ };
+
+ // \brief Stores each check filter and its source for every check source type.
+ // clang-tidy has 3 types of check sources:
+ // clang-tidy binary
+ // '-config' commandline option or a specific configuration file
+ // '-checks' commandline option
+ std::vector<StringPair> CheckSources[CheckSourceTypeEnd];
+
typedef std::vector<std::string> ArgList;
/// \brief Add extra compilation arguments to the end of the list.
Index: clang-tidy/ClangTidyOptions.cpp
===================================================================
--- clang-tidy/ClangTidyOptions.cpp
+++ clang-tidy/ClangTidyOptions.cpp
@@ -121,10 +121,18 @@
ClangTidyOptions Result = *this;
// Merge comma-separated glob lists by appending the new value after a comma.
- if (Other.Checks)
+ if (Other.Checks) {
Result.Checks =
(Result.Checks && !Result.Checks->empty() ? *Result.Checks + "," : "") +
*Other.Checks;
+
+ for (auto SourceType : {ClangTidyOptions::ChecksCommandlineOption,
+ ClangTidyOptions::ConfigCommandlineOptionOrFile,
+ ClangTidyOptions::DefaultBinary}) {
+ for (const auto &CheckSource : Other.CheckSources[SourceType])
+ Result.CheckSources[SourceType].push_back(CheckSource);
+ }
+ }
if (Other.WarningsAsErrors)
Result.WarningsAsErrors =
(Result.WarningsAsErrors && !Result.WarningsAsErrors->empty()
@@ -255,7 +263,12 @@
<< ParsedOptions.getError().message() << "\n";
continue;
}
-
+ if (ParsedOptions->Checks) {
+ ParsedOptions
+ ->CheckSources[ClangTidyOptions::ConfigCommandlineOptionOrFile]
+ .push_back(ClangTidyOptions::StringPair(*ParsedOptions->Checks,
+ ConfigFile.c_str()));
+ }
return DefaultOptionsProvider::getOptions(Directory)
.mergeWith(*ParsedOptions)
.mergeWith(OverrideOptions);
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