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//===--- CompilationDatabase.cpp - ----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains implementations of the CompilationDatabase base class
// and the FixedCompilationDatabase.
//
//===----------------------------------------------------------------------===//
#include <sstream>
#include "clang/Tooling/CompilationDatabase.h"
#include "clang/Tooling/CompilationDatabasePluginRegistry.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/system_error.h"
namespace clang {
namespace tooling {
CompilationDatabase::~CompilationDatabase() {}
CompilationDatabase *
CompilationDatabase::loadFromDirectory(StringRef BuildDirectory,
std::string &ErrorMessage) {
std::stringstream ErrorStream;
for (CompilationDatabasePluginRegistry::iterator
It = CompilationDatabasePluginRegistry::begin(),
Ie = CompilationDatabasePluginRegistry::end();
It != Ie; ++It) {
std::string DatabaseErrorMessage;
OwningPtr<CompilationDatabasePlugin> Plugin(It->instantiate());
if (CompilationDatabase *DB =
Plugin->loadFromDirectory(BuildDirectory, DatabaseErrorMessage))
return DB;
else
ErrorStream << It->getName() << ": " << DatabaseErrorMessage << "\n";
}
ErrorMessage = ErrorStream.str();
return NULL;
}
static CompilationDatabase *
findCompilationDatabaseFromDirectory(StringRef Directory,
std::string &ErrorMessage) {
std::stringstream ErrorStream;
bool HasErrorMessage = false;
while (!Directory.empty()) {
std::string LoadErrorMessage;
if (CompilationDatabase *DB =
CompilationDatabase::loadFromDirectory(Directory, LoadErrorMessage))
return DB;
if (!HasErrorMessage) {
ErrorStream << "No compilation database found in " << Directory.str()
<< " or any parent directory\n" << LoadErrorMessage;
HasErrorMessage = true;
}
Directory = llvm::sys::path::parent_path(Directory);
}
ErrorMessage = ErrorStream.str();
return NULL;
}
CompilationDatabase *
CompilationDatabase::autoDetectFromSource(StringRef SourceFile,
std::string &ErrorMessage) {
llvm::SmallString<1024> AbsolutePath(getAbsolutePath(SourceFile));
StringRef Directory = llvm::sys::path::parent_path(AbsolutePath);
CompilationDatabase *DB = findCompilationDatabaseFromDirectory(Directory,
ErrorMessage);
if (!DB)
ErrorMessage = ("Could not auto-detect compilation database for file \"" +
SourceFile + "\"\n" + ErrorMessage).str();
return DB;
}
CompilationDatabase *
CompilationDatabase::autoDetectFromDirectory(StringRef SourceDir,
std::string &ErrorMessage) {
llvm::SmallString<1024> AbsolutePath(getAbsolutePath(SourceDir));
CompilationDatabase *DB = findCompilationDatabaseFromDirectory(AbsolutePath,
ErrorMessage);
if (!DB)
ErrorMessage = ("Could not auto-detect compilation database from directory \"" +
SourceDir + "\"\n" + ErrorMessage).str();
return DB;
}
CompilationDatabasePlugin::~CompilationDatabasePlugin() {}
FixedCompilationDatabase *
FixedCompilationDatabase::loadFromCommandLine(int &Argc,
const char **Argv,
Twine Directory) {
const char **DoubleDash = std::find(Argv, Argv + Argc, StringRef("--"));
if (DoubleDash == Argv + Argc)
return NULL;
std::vector<std::string> CommandLine(DoubleDash + 1, Argv + Argc);
Argc = DoubleDash - Argv;
return new FixedCompilationDatabase(Directory, CommandLine);
}
FixedCompilationDatabase::
FixedCompilationDatabase(Twine Directory, ArrayRef<std::string> CommandLine) {
std::vector<std::string> ToolCommandLine(1, "clang-tool");
ToolCommandLine.insert(ToolCommandLine.end(),
CommandLine.begin(), CommandLine.end());
CompileCommands.push_back(CompileCommand(Directory, ToolCommandLine));
}
std::vector<CompileCommand>
FixedCompilationDatabase::getCompileCommands(StringRef FilePath) const {
std::vector<CompileCommand> Result(CompileCommands);
Result[0].CommandLine.push_back(FilePath);
return Result;
}
std::vector<std::string>
FixedCompilationDatabase::getAllFiles() const {
return std::vector<std::string>();
}
// This anchor is used to force the linker to link in the generated object file
// and thus register the JSONCompilationDatabasePlugin.
extern volatile int JSONAnchorSource;
static int JSONAnchorDest = JSONAnchorSource;
} // end namespace tooling
} // end namespace clang
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