C++ UnitEmitter::newPreClassEmitter方法代码示例

void PreClassRepoProxy::GetPreClassesStmt
                      ::get(UnitEmitter& ue) {
  RepoTxn txn(m_repo);
  if (!prepared()) {
    std::stringstream ssSelect;
    ssSelect << "SELECT preClassId,name,hoistable,extraData FROM "
             << m_repo.table(m_repoId, "PreClass")
             << " WHERE unitSn == @unitSn ORDER BY preClassId ASC;";
    txn.prepare(*this, ssSelect.str());
  }
  RepoTxnQuery query(txn, *this);
  query.bindInt64("@unitSn", ue.sn());
  do {
    query.step();
    if (query.row()) {
      Id preClassId;          /**/ query.getId(0, preClassId);
      StringData* name;       /**/ query.getStaticString(1, name);
      int hoistable;          /**/ query.getInt(2, hoistable);
      BlobDecoder extraBlob = /**/ query.getBlob(3);
      PreClassEmitter* pce = ue.newPreClassEmitter(
        name, (PreClass::Hoistable)hoistable);
      pce->serdeMetaData(extraBlob);
      if (!SystemLib::s_inited) {
        assert(pce->attrs() & AttrPersistent);
        assert(pce->attrs() & AttrUnique);
      }
      assert(pce->id() == preClassId);
    }
  } while (!query.done());
  txn.commit();
}

void emit_class(EmitUnitState& state,
                UnitEmitter& ue,
                const php::Class& cls) {
  FTRACE(2, "    class: {}\n", cls.name->data());
  auto const pce = ue.newPreClassEmitter(
    cls.name,
    cls.hoistability
  );
  pce->init(
    std::get<0>(cls.srcInfo.loc),
    std::get<1>(cls.srcInfo.loc),
    ue.bcPos(),
    cls.attrs,
    cls.parentName ? cls.parentName : s_empty.get(),
    cls.srcInfo.docComment
  );
  pce->setUserAttributes(cls.userAttributes);

  for (auto& i : cls.interfaceNames)   pce->addInterface(i);
  for (auto& ut : cls.usedTraitNames)  pce->addUsedTrait(ut);
  for (auto& req : cls.traitRequirements) pce->addTraitRequirement(req);
  for (auto& tp : cls.traitPrecRules)  pce->addTraitPrecRule(tp);
  for (auto& ta : cls.traitAliasRules) pce->addTraitAliasRule(ta);

  for (auto& m : cls.methods) {
    FTRACE(2, "    method: {}\n", m->name->data());
    auto const fe = ue.newMethodEmitter(m->name, pce);
    emit_init_func(*fe, *m);
    pce->addMethod(fe);
    auto const info = emit_bytecode(state, ue, *m);
    emit_finish_func(*m, *fe, info);
  }

  for (auto& prop : cls.properties) {
    pce->addProperty(
      prop.name,
      prop.attrs,
      prop.typeConstraint,
      prop.docComment,
      &prop.val,
      KindOfInvalid // hphpcType
    );
  }

  for (auto& cconst : cls.constants) {
    pce->addConstant(
      cconst.name,
      cconst.typeConstraint,
      &cconst.val,
      cconst.phpCode
    );
  }
}

void emit_class(EmitUnitState& state,
                UnitEmitter& ue,
                const php::Class& cls) {
  FTRACE(2, "    class: {}\n", cls.name->data());
  auto const pce = ue.newPreClassEmitter(
    cls.name,
    cls.hoistability
  );
  pce->init(
    std::get<0>(cls.srcInfo.loc),
    std::get<1>(cls.srcInfo.loc),
    ue.bcPos(),
    cls.attrs,
    cls.parentName ? cls.parentName : s_empty.get(),
    cls.srcInfo.docComment
  );
  pce->setUserAttributes(cls.userAttributes);

  for (auto& x : cls.interfaceNames)     pce->addInterface(x);
  for (auto& x : cls.usedTraitNames)     pce->addUsedTrait(x);
  for (auto& x : cls.requirements)       pce->addClassRequirement(x);
  for (auto& x : cls.traitPrecRules)     pce->addTraitPrecRule(x);
  for (auto& x : cls.traitAliasRules)    pce->addTraitAliasRule(x);
  pce->setNumDeclMethods(cls.numDeclMethods);

  pce->setIfaceVtableSlot(state.index.lookup_iface_vtable_slot(&cls));

  for (auto& m : cls.methods) {
    FTRACE(2, "    method: {}\n", m->name->data());
    auto const fe = ue.newMethodEmitter(m->name, pce);
    emit_init_func(*fe, *m);
    pce->addMethod(fe);
    auto const info = emit_bytecode(state, ue, *m);
    emit_finish_func(*m, *fe, info);
  }

  auto const privateProps   = state.index.lookup_private_props(&cls);
  auto const privateStatics = state.index.lookup_private_statics(&cls);
  for (auto& prop : cls.properties) {
    auto const makeRat = [&] (const Type& ty) -> RepoAuthType {
      if (ty.couldBe(TCls)) {
        return RepoAuthType{};
      }
      auto const rat = make_repo_type(*state.index.array_table_builder(), ty);
      merge_repo_auth_type(ue, rat);
      return rat;
    };

    auto const privPropTy = [&] (const PropState& ps) -> Type {
      /*
       * Skip closures, because the types of their used vars can be
       * communicated via assert opcodes right now.  At the time of this
       * writing there was nothing to gain by including RAT's for the
       * properties, since closure properties are only used internally by the
       * runtime, not directly via opcodes like CGetM.
       */
      if (is_closure(cls)) return Type{};

      auto it = ps.find(prop.name);
      if (it == end(ps)) return Type{};
      return it->second;
    };

    Type propTy;
    auto const attrs = prop.attrs;
    if (attrs & AttrPrivate) {
      propTy = privPropTy((attrs & AttrStatic) ? privateStatics : privateProps);
    } else if ((attrs & AttrPublic) && (attrs & AttrStatic)) {
      propTy = state.index.lookup_public_static(&cls, prop.name);
    }

    pce->addProperty(
      prop.name,
      prop.attrs,
      prop.typeConstraint,
      prop.docComment,
      &prop.val,
      makeRat(propTy)
    );
  }

  for (auto& cconst : cls.constants) {
    if (!cconst.val.hasValue()) {
      pce->addAbstractConstant(
        cconst.name,
        cconst.typeConstraint,
        cconst.isTypeconst
      );
    } else {
      pce->addConstant(
        cconst.name,
        cconst.typeConstraint,
        &cconst.val.value(),
        cconst.phpCode,
        cconst.isTypeconst
      );
    }
  }

  pce->setEnumBaseTy(cls.enumBaseTy);
//.........这里部分代码省略.........

void emit_class(EmitUnitState& state,
                UnitEmitter& ue,
                const php::Class& cls) {
  FTRACE(2, "    class: {}\n", cls.name->data());
  auto const pce = ue.newPreClassEmitter(
    cls.name,
    cls.hoistability
  );
  pce->init(
    std::get<0>(cls.srcInfo.loc),
    std::get<1>(cls.srcInfo.loc),
    ue.bcPos(),
    cls.attrs,
    cls.parentName ? cls.parentName : s_empty.get(),
    cls.srcInfo.docComment
  );
  pce->setUserAttributes(cls.userAttributes);

  for (auto& x : cls.interfaceNames)     pce->addInterface(x);
  for (auto& x : cls.usedTraitNames)     pce->addUsedTrait(x);
  for (auto& x : cls.requirements)       pce->addClassRequirement(x);
  for (auto& x : cls.traitPrecRules)     pce->addTraitPrecRule(x);
  for (auto& x : cls.traitAliasRules)    pce->addTraitAliasRule(x);
  pce->setNumDeclMethods(cls.numDeclMethods);

  pce->setIfaceVtableSlot(state.index.lookup_iface_vtable_slot(&cls));

  for (auto& m : cls.methods) {
    FTRACE(2, "    method: {}\n", m->name->data());
    auto const fe = ue.newMethodEmitter(m->name, pce);
    emit_init_func(*fe, *m);
    pce->addMethod(fe);
    auto const info = emit_bytecode(state, ue, *m);
    emit_finish_func(*m, *fe, info);
  }

  std::vector<Type> useVars;
  if (is_closure(cls)) {
    auto f = find_method(&cls, s_invoke.get());
    useVars = state.index.lookup_closure_use_vars(f);
  }
  auto uvIt = useVars.begin();

  auto const privateProps   = state.index.lookup_private_props(&cls);
  auto const privateStatics = state.index.lookup_private_statics(&cls);
  for (auto& prop : cls.properties) {
    auto const makeRat = [&] (const Type& ty) -> RepoAuthType {
      if (ty.couldBe(TCls)) {
        return RepoAuthType{};
      }
      auto const rat = make_repo_type(*state.index.array_table_builder(), ty);
      merge_repo_auth_type(ue, rat);
      return rat;
    };

    auto const privPropTy = [&] (const PropState& ps) -> Type {
      if (is_closure(cls)) {
        // For closures use variables will be the first properties of the
        // closure object, in declaration order
        if (uvIt != useVars.end()) return *uvIt++;
        return Type{};
      }

      auto it = ps.find(prop.name);
      if (it == end(ps)) return Type{};
      return it->second;
    };

    Type propTy;
    auto const attrs = prop.attrs;
    if (attrs & AttrPrivate) {
      propTy = privPropTy((attrs & AttrStatic) ? privateStatics : privateProps);
    } else if ((attrs & AttrPublic) && (attrs & AttrStatic)) {
      propTy = state.index.lookup_public_static(&cls, prop.name);
    }

    pce->addProperty(
      prop.name,
      prop.attrs,
      prop.typeConstraint,
      prop.docComment,
      &prop.val,
      makeRat(propTy)
    );
  }
  assert(uvIt == useVars.end());

  for (auto& cconst : cls.constants) {
    if (!cconst.val.hasValue()) {
      pce->addAbstractConstant(
        cconst.name,
        cconst.typeConstraint,
        cconst.isTypeconst
      );
    } else {
      pce->addConstant(
        cconst.name,
        cconst.typeConstraint,
        &cconst.val.value(),
        cconst.phpCode,
//.........这里部分代码省略.........

void emit_class(EmitUnitState& state,
                UnitEmitter& ue,
                const php::Class& cls) {
  FTRACE(2, "    class: {}\n", cls.name->data());
  auto const pce = ue.newPreClassEmitter(
    cls.name,
    cls.hoistability
  );
  pce->init(
    std::get<0>(cls.srcInfo.loc),
    std::get<1>(cls.srcInfo.loc),
    ue.bcPos(),
    cls.attrs,
    cls.parentName ? cls.parentName : s_empty.get(),
    cls.srcInfo.docComment
  );
  pce->setUserAttributes(cls.userAttributes);

  for (auto& x : cls.interfaceNames)     pce->addInterface(x);
  for (auto& x : cls.usedTraitNames)     pce->addUsedTrait(x);
  for (auto& x : cls.requirements)       pce->addClassRequirement(x);
  for (auto& x : cls.traitPrecRules)     pce->addTraitPrecRule(x);
  for (auto& x : cls.traitAliasRules)    pce->addTraitAliasRule(x);

  for (auto& m : cls.methods) {
    FTRACE(2, "    method: {}\n", m->name->data());
    auto const fe = ue.newMethodEmitter(m->name, pce);
    emit_init_func(*fe, *m);
    pce->addMethod(fe);
    auto const info = emit_bytecode(state, ue, *m);
    emit_finish_func(*m, *fe, info);
  }

  auto const privateProps   = state.index.lookup_private_props(&cls);
  auto const privateStatics = state.index.lookup_private_statics(&cls);
  for (auto& prop : cls.properties) {
    auto const repoTy = [&] (const PropState& ps) -> RepoAuthType {
      // TODO(#3599292): we don't currently infer closure use var types.
      if (is_closure(cls)) return RepoAuthType{};
      auto it = ps.find(prop.name);
      if (it == end(ps)) return RepoAuthType{};
      auto const rat = make_repo_type(*state.index.array_table_builder(),
                                      it->second);
      merge_repo_auth_type(ue, rat);
      return rat;
    };

    pce->addProperty(
      prop.name,
      prop.attrs,
      prop.typeConstraint,
      prop.docComment,
      &prop.val,
      (prop.attrs & AttrStatic) ? repoTy(privateStatics) : repoTy(privateProps)
    );
  }

  for (auto& cconst : cls.constants) {
    pce->addConstant(
      cconst.name,
      cconst.typeConstraint,
      &cconst.val,
      cconst.phpCode
    );
  }
}