Method loadType

lib/loader/ast/type.cpp:305–339

Load binary to construct SubType node. See "include/loader/loader.h".

// Load binary to construct SubType node. See "include/loader/loader.h".
Expect<void> Loader::loadType(AST::SubType &SType) {
  // Pick the first byte for sub type.
  EXPECTED_TRY(uint8_t B, FMgr.peekByte().map_error([this](auto E) {
    return logLoadError(E, FMgr.getLastOffset(), ASTNodeAttr::Type_Rec);
  }));

  switch (static_cast<TypeCode>(B)) {
  default:
    // Case: comptype.
    SType.setFinal(true);
    return loadCompositeType(SType.getCompositeType());
  case TypeCode::Sub:
    // Case: 0x50 vec(typeidx) comptype.
    SType.setFinal(false);
    break;
  case TypeCode::SubFinal:
    // Case: 0x4F vec(typeidx) comptype.
    SType.setFinal(true);
    break;
  }
  FMgr.readByte();

  // Read the super type indices.
  auto LoadNum = [this](uint32_t &Idx) -> Expect<void> {
    EXPECTED_TRY(uint32_t Num, FMgr.readU32().map_error([this](auto E) {
      return logLoadError(E, FMgr.getLastOffset(), ASTNodeAttr::Type_Rec);
    }));
    Idx = Num;
    return {};
  };
  EXPECTED_TRY(loadVec<AST::SubType>(SType.getSuperTypeIndices(), LoadNum));

  // Read the composite type.
  return loadCompositeType(SType.getCompositeType());
}

// Load binary to construct FunctionType node. See "include/loader/loader.h".
Expect<void> Loader::loadType(AST::FunctionType &FuncType) {