// SPDX-License-Identifier: Apache-2.0

// SPDX-FileCopyrightText: 2019-2024 Second State INC

#include "executor/executor.h"

#include <cstdint>

namespace WasmEdge {

namespace Executor {

Expect<void> Executor::runLocalGetOp(Runtime::StackManager &StackMgr,

                                     uint32_t StackOffset) const noexcept {

  StackMgr.push(StackMgr.getTopN(StackOffset));

  return {};

}

Expect<void> Executor::runLocalSetOp(Runtime::StackManager &StackMgr,

                                     uint32_t StackOffset) const noexcept {

  StackMgr.getTopN(StackOffset - 1) = StackMgr.pop();

  return {};

}

Expect<void> Executor::runLocalTeeOp(Runtime::StackManager &StackMgr,

                                     uint32_t StackOffset) const noexcept {

  const ValVariant &Val = StackMgr.getTop();

  StackMgr.getTopN(StackOffset) = Val;

  return {};

}

Expect<void> Executor::runGlobalGetOp(Runtime::StackManager &StackMgr,

                                      uint32_t Idx) const noexcept {

  auto *GlobInst = getGlobInstByIdx(StackMgr, Idx);

  assuming(GlobInst);

  StackMgr.push(GlobInst->getValue());

  return {};

}

Expect<void> Executor::runGlobalSetOp(Runtime::StackManager &StackMgr,

                                      uint32_t Idx) const noexcept {

  auto *GlobInst = getGlobInstByIdx(StackMgr, Idx);

  assuming(GlobInst);

  GlobInst->setValue(StackMgr.pop());

  return {};

}

} // namespace Executor

} // namespace WasmEdge