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#include "refactoringcompilationdatabase.h"

#include "clangrefactoringbackend_global.h"

namespace ClangBackEnd {

RefactoringCompilationDatabase::RefactoringCompilationDatabase()
{
}

namespace {

std::string concatFilePath(const clang::tooling::CompileCommand &compileCommand)
{
    return compileCommand.Directory + nativeSeperator + compileCommand.Filename;
}
}

std::vector<clang::tooling::CompileCommand>
RefactoringCompilationDatabase::getCompileCommands(llvm::StringRef filePath) const
{
    std::vector<clang::tooling::CompileCommand> foundCommands;

    std::copy_if(compileCommands.begin(),
                 compileCommands.end(),
                 std::back_inserter(foundCommands),
                 [&] (const clang::tooling::CompileCommand &compileCommand) {
        return filePath == concatFilePath(compileCommand);
    });

    return foundCommands;
}

std::vector<std::string>
RefactoringCompilationDatabase::getAllFiles() const
{
    std::vector<std::string> filePaths;
    filePaths.reserve(compileCommands.size());

    std::transform(compileCommands.begin(),
                   compileCommands.end(),
                   std::back_inserter(filePaths),
                   [&] (const clang::tooling::CompileCommand &compileCommand) {
          return concatFilePath(compileCommand);
      });

    return filePaths;
}

std::vector<clang::tooling::CompileCommand>
RefactoringCompilationDatabase::getAllCompileCommands() const
{
    return compileCommands;
}

void RefactoringCompilationDatabase::addFile(const std::string &directory,
                                             const std::string &fileName,
                                             const std::vector<std::string> &commandLine)
{
#if LLVM_VERSION_MAJOR >= 4
    compileCommands.emplace_back(directory, fileName, commandLine, std::string());
#else
    compileCommands.emplace_back(directory, fileName, commandLine);
#endif
}

} // namespace ClangBackEnd