// SPDX-License-Identifier: Apache-2.0

// SPDX-FileCopyrightText: Copyright The WasmEdge Authors

#include "loader/loader.h"

namespace WasmEdge {

namespace Loader {

Expect<void> Loader::loadStart(AST::Component::Start &S) {

  auto ReportError = [this](auto E) {

    return logLoadError(E, FMgr.getLastOffset(), ASTNodeAttr::Comp_Start);

  };

  // start ::= f:<funcidx> arg*:vec(<valueidx>) r:<u32>

  //         => (start f (value arg)* (result (value))ʳ)

  EXPECTED_TRY(S.getFunctionIndex(), FMgr.readU32().map_error(ReportError));

  auto F = [this, ReportError](uint32_t &V) -> Expect<void> {

    EXPECTED_TRY(V, FMgr.readU32().map_error(ReportError));

    return {};

  };

  EXPECTED_TRY(loadVec<AST::Component::Start>(S.getArguments(), F));

  EXPECTED_TRY(S.getResult(), FMgr.readU32().map_error(ReportError));

  return {};

}

} // namespace Loader

} // namespace WasmEdge