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//===-- Lua.cpp -----------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Lua.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Utility/FileSpec.h"
#include "llvm/Support/FormatVariadic.h"
using namespace lldb_private;
using namespace lldb;
llvm::Error Lua::Run(llvm::StringRef buffer) {
int error =
luaL_loadbuffer(m_lua_state, buffer.data(), buffer.size(), "buffer") ||
lua_pcall(m_lua_state, 0, 0, 0);
if (!error)
return llvm::Error::success();
llvm::Error e = llvm::make_error<llvm::StringError>(
llvm::formatv("{0}\n", lua_tostring(m_lua_state, -1)),
llvm::inconvertibleErrorCode());
// Pop error message from the stack.
lua_pop(m_lua_state, 1);
return e;
}
llvm::Error Lua::LoadModule(llvm::StringRef filename) {
FileSpec file(filename);
if (!FileSystem::Instance().Exists(file)) {
return llvm::make_error<llvm::StringError>("invalid path",
llvm::inconvertibleErrorCode());
}
ConstString module_extension = file.GetFileNameExtension();
if (module_extension != ".lua") {
return llvm::make_error<llvm::StringError>("invalid extension",
llvm::inconvertibleErrorCode());
}
int error = luaL_loadfile(m_lua_state, filename.data()) ||
lua_pcall(m_lua_state, 0, 1, 0);
if (error) {
llvm::Error e = llvm::make_error<llvm::StringError>(
llvm::formatv("{0}\n", lua_tostring(m_lua_state, -1)),
llvm::inconvertibleErrorCode());
// Pop error message from the stack.
lua_pop(m_lua_state, 1);
return e;
}
ConstString module_name = file.GetFileNameStrippingExtension();
lua_setglobal(m_lua_state, module_name.GetCString());
return llvm::Error::success();
}
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