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// Clang plugin implementation
// Copyright (C) 2024 Nguyễn Gia Phong
//
// This file is part of GoatC.
//
// GoatC is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GoatC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GoatC. If not, see <https://www.gnu.org/licenses/>.
#include "goatc.hh"
#include <clang/AST/AST.h>
#include <clang/AST/RecursiveASTVisitor.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Sema/Sema.h>
#include <llvm/Support/raw_ostream.h>
bool
GoatCConsumer::HandleTopLevelDecl (clang::DeclGroupRef dg)
{
if (this->noop)
return true;
for (auto const& d : dg)
if (auto const& nd = llvm::dyn_cast <clang::NamedDecl> (d))
llvm::errs() << "top-level-decl: \"" << nd->getNameAsString() << "\"\n";
return true;
}
clang::PluginASTAction::ActionType
GoatCAction::getActionType ()
{
return AddBeforeMainAction;
}
std::unique_ptr <clang::ASTConsumer>
GoatCAction::CreateASTConsumer (clang::CompilerInstance& ci,
llvm::StringRef in_file)
{
llvm::errs () << in_file << '\n';
return std::make_unique <GoatCConsumer> (ci, in_file != this->source_file);
}
void
printHelp (llvm::raw_ostream& ros)
{
ros << "Usage: goatcflags [OPTION]...\n\nOptions:\n";
ros << " -h, --help show this help message and exit\n";
ros << " -s, --source-file PATH path to the file to be chimera'd\n";
}
bool
GoatCAction::ParseArgs (const clang::CompilerInstance& ci,
const std::vector <std::string> &args)
{
auto& d = ci.getDiagnostics ();
for (unsigned i = 0, e = args.size(); i < e; ++i)
if (args[i] == "-h" || args[i] == "--help")
{
printHelp (llvm::errs ());
// FIXME: exit with status 0
return false;
}
else if (args[i] == "-s" || args[i] == "--source-file")
{
if (++i == e)
{
d.Report (d.getCustomDiagID (clang::DiagnosticsEngine::Error,
"missing --source-file argument"));
return false;
}
// TODO: check if file exists
this->source_file = args[i];
}
if (this->source_file.empty ())
{
d.Report (d.getCustomDiagID (clang::DiagnosticsEngine::Error,
"unspecified --source-file"));
return false;
}
return true;
}
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