cannam@49: // Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
cannam@49: // Licensed under the MIT License:
cannam@49: //
cannam@49: // Permission is hereby granted, free of charge, to any person obtaining a copy
cannam@49: // of this software and associated documentation files (the "Software"), to deal
cannam@49: // in the Software without restriction, including without limitation the rights
cannam@49: // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
cannam@49: // copies of the Software, and to permit persons to whom the Software is
cannam@49: // furnished to do so, subject to the following conditions:
cannam@49: //
cannam@49: // The above copyright notice and this permission notice shall be included in
cannam@49: // all copies or substantial portions of the Software.
cannam@49: //
cannam@49: // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
cannam@49: // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
cannam@49: // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
cannam@49: // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
cannam@49: // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
cannam@49: // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
cannam@49: // THE SOFTWARE.
cannam@49: 
cannam@49: #ifndef CAPNP_ANY_H_
cannam@49: #define CAPNP_ANY_H_
cannam@49: 
cannam@49: #if defined(__GNUC__) && !defined(CAPNP_HEADER_WARNINGS)
cannam@49: #pragma GCC system_header
cannam@49: #endif
cannam@49: 
cannam@49: #include "layout.h"
cannam@49: #include "pointer-helpers.h"
cannam@49: #include "orphan.h"
cannam@49: #include "list.h"
cannam@49: 
cannam@49: namespace capnp {
cannam@49: 
cannam@49: class StructSchema;
cannam@49: class ListSchema;
cannam@49: class InterfaceSchema;
cannam@49: class Orphanage;
cannam@49: class ClientHook;
cannam@49: class PipelineHook;
cannam@49: struct PipelineOp;
cannam@49: struct AnyPointer;
cannam@49: 
cannam@49: struct AnyList {
cannam@49:   AnyList() = delete;
cannam@49: 
cannam@49:   class Reader;
cannam@49:   class Builder;
cannam@49: };
cannam@49: 
cannam@49: struct AnyStruct {
cannam@49:   AnyStruct() = delete;
cannam@49: 
cannam@49:   class Reader;
cannam@49:   class Builder;
cannam@49:   class Pipeline;
cannam@49: };
cannam@49: 
cannam@49: template<>
cannam@49: struct List<AnyStruct, Kind::OTHER> {
cannam@49:   List() = delete;
cannam@49: 
cannam@49:   class Reader;
cannam@49:   class Builder;
cannam@49: };
cannam@49: 
cannam@49: namespace _ {  // private
cannam@49: template <> struct Kind_<AnyPointer> { static constexpr Kind kind = Kind::OTHER; };
cannam@49: template <> struct Kind_<AnyStruct> { static constexpr Kind kind = Kind::OTHER; };
cannam@49: template <> struct Kind_<AnyList> { static constexpr Kind kind = Kind::OTHER; };
cannam@49: }  // namespace _ (private)
cannam@49: 
cannam@49: // =======================================================================================
cannam@49: // AnyPointer!
cannam@49: 
cannam@49: enum class Equality {
cannam@49:   NOT_EQUAL,
cannam@49:   EQUAL,
cannam@49:   UNKNOWN_CONTAINS_CAPS
cannam@49: };
cannam@49: 
cannam@49: kj::StringPtr KJ_STRINGIFY(Equality res);
cannam@49: 
cannam@49: struct AnyPointer {
cannam@49:   // Reader/Builder for the `AnyPointer` field type, i.e. a pointer that can point to an arbitrary
cannam@49:   // object.
cannam@49: 
cannam@49:   AnyPointer() = delete;
cannam@49: 
cannam@49:   class Reader {
cannam@49:   public:
cannam@49:     typedef AnyPointer Reads;
cannam@49: 
cannam@49:     Reader() = default;
cannam@49:     inline Reader(_::PointerReader reader): reader(reader) {}
cannam@49: 
cannam@49:     inline MessageSize targetSize() const;
cannam@49:     // Get the total size of the target object and all its children.
cannam@49: 
cannam@49:     inline PointerType getPointerType() const;
cannam@49: 
cannam@49:     inline bool isNull() const { return getPointerType() == PointerType::NULL_; }
cannam@49:     inline bool isStruct() const { return getPointerType() == PointerType::STRUCT; }
cannam@49:     inline bool isList() const { return getPointerType() == PointerType::LIST; }
cannam@49:     inline bool isCapability() const { return getPointerType() == PointerType::CAPABILITY; }
cannam@49: 
cannam@49:     Equality equals(AnyPointer::Reader right);
cannam@49:     bool operator==(AnyPointer::Reader right);
cannam@49:     inline bool operator!=(AnyPointer::Reader right) {
cannam@49:       return !(*this == right);
cannam@49:     }
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline ReaderFor<T> getAs() const;
cannam@49:     // Valid for T = any generated struct type, interface type, List<U>, Text, or Data.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline ReaderFor<T> getAs(StructSchema schema) const;
cannam@49:     // Only valid for T = DynamicStruct.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline ReaderFor<T> getAs(ListSchema schema) const;
cannam@49:     // Only valid for T = DynamicList.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline ReaderFor<T> getAs(InterfaceSchema schema) const;
cannam@49:     // Only valid for T = DynamicCapability.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49: #if !CAPNP_LITE
cannam@49:     kj::Own<ClientHook> getPipelinedCap(kj::ArrayPtr<const PipelineOp> ops) const;
cannam@49:     // Used by RPC system to implement pipelining.  Applications generally shouldn't use this
cannam@49:     // directly.
cannam@49: #endif  // !CAPNP_LITE
cannam@49: 
cannam@49:   private:
cannam@49:     _::PointerReader reader;
cannam@49:     friend struct AnyPointer;
cannam@49:     friend class Orphanage;
cannam@49:     friend class CapReaderContext;
cannam@49:     friend struct _::PointerHelpers<AnyPointer>;
cannam@49:   };
cannam@49: 
cannam@49:   class Builder {
cannam@49:   public:
cannam@49:     typedef AnyPointer Builds;
cannam@49: 
cannam@49:     Builder() = delete;
cannam@49:     inline Builder(decltype(nullptr)) {}
cannam@49:     inline Builder(_::PointerBuilder builder): builder(builder) {}
cannam@49: 
cannam@49:     inline MessageSize targetSize() const;
cannam@49:     // Get the total size of the target object and all its children.
cannam@49: 
cannam@49:     inline PointerType getPointerType();
cannam@49: 
cannam@49:     inline bool isNull() { return getPointerType() == PointerType::NULL_; }
cannam@49:     inline bool isStruct() { return getPointerType() == PointerType::STRUCT; }
cannam@49:     inline bool isList() { return getPointerType() == PointerType::LIST; }
cannam@49:     inline bool isCapability() { return getPointerType() == PointerType::CAPABILITY; }
cannam@49: 
cannam@49:     inline Equality equals(AnyPointer::Reader right) {
cannam@49:       return asReader().equals(right);
cannam@49:     }
cannam@49:     inline bool operator==(AnyPointer::Reader right) {
cannam@49:       return asReader() == right;
cannam@49:     }
cannam@49:     inline bool operator!=(AnyPointer::Reader right) {
cannam@49:       return !(*this == right);
cannam@49:     }
cannam@49: 
cannam@49:     inline void clear();
cannam@49:     // Set to null.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> getAs();
cannam@49:     // Valid for T = any generated struct type, List<U>, Text, or Data.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> getAs(StructSchema schema);
cannam@49:     // Only valid for T = DynamicStruct.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> getAs(ListSchema schema);
cannam@49:     // Only valid for T = DynamicList.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> getAs(InterfaceSchema schema);
cannam@49:     // Only valid for T = DynamicCapability.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> initAs();
cannam@49:     // Valid for T = any generated struct type.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> initAs(uint elementCount);
cannam@49:     // Valid for T = List<U>, Text, or Data.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> initAs(StructSchema schema);
cannam@49:     // Only valid for T = DynamicStruct.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline BuilderFor<T> initAs(ListSchema schema, uint elementCount);
cannam@49:     // Only valid for T = DynamicList.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     inline AnyList::Builder initAsAnyList(ElementSize elementSize, uint elementCount);
cannam@49:     // Note: Does not accept INLINE_COMPOSITE for elementSize.
cannam@49: 
cannam@49:     inline List<AnyStruct>::Builder initAsListOfAnyStruct(
cannam@49:         uint dataWordCount, uint pointerCount, uint elementCount);
cannam@49: 
cannam@49:     inline AnyStruct::Builder initAsAnyStruct(uint dataWordCount, uint pointerCount);
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline void setAs(ReaderFor<T> value);
cannam@49:     // Valid for ReaderType = T::Reader for T = any generated struct type, List<U>, Text, Data,
cannam@49:     // DynamicStruct, or DynamicList (the dynamic types require `#include <capnp/dynamic.h>`).
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline void setAs(std::initializer_list<ReaderFor<ListElementType<T>>> list);
cannam@49:     // Valid for T = List<?>.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline void setCanonicalAs(ReaderFor<T> value);
cannam@49: 
cannam@49:     inline void set(Reader value) { builder.copyFrom(value.reader); }
cannam@49:     // Set to a copy of another AnyPointer.
cannam@49: 
cannam@49:     inline void setCanonical(Reader value) { builder.copyFrom(value.reader, true); }
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline void adopt(Orphan<T>&& orphan);
cannam@49:     // Valid for T = any generated struct type, List<U>, Text, Data, DynamicList, DynamicStruct,
cannam@49:     // or DynamicValue (the dynamic types require `#include <capnp/dynamic.h>`).
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline Orphan<T> disownAs();
cannam@49:     // Valid for T = any generated struct type, List<U>, Text, Data.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline Orphan<T> disownAs(StructSchema schema);
cannam@49:     // Only valid for T = DynamicStruct.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline Orphan<T> disownAs(ListSchema schema);
cannam@49:     // Only valid for T = DynamicList.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     template <typename T>
cannam@49:     inline Orphan<T> disownAs(InterfaceSchema schema);
cannam@49:     // Only valid for T = DynamicCapability.  Requires `#include <capnp/dynamic.h>`.
cannam@49: 
cannam@49:     inline Orphan<AnyPointer> disown();
cannam@49:     // Disown without a type.
cannam@49: 
cannam@49:     inline Reader asReader() const { return Reader(builder.asReader()); }
cannam@49:     inline operator Reader() const { return Reader(builder.asReader()); }
cannam@49: 
cannam@49:   private:
cannam@49:     _::PointerBuilder builder;
cannam@49:     friend class Orphanage;
cannam@49:     friend class CapBuilderContext;
cannam@49:     friend struct _::PointerHelpers<AnyPointer>;
cannam@49:   };
cannam@49: 
cannam@49: #if !CAPNP_LITE
cannam@49:   class Pipeline {
cannam@49:   public:
cannam@49:     typedef AnyPointer Pipelines;
cannam@49: 
cannam@49:     inline Pipeline(decltype(nullptr)) {}
cannam@49:     inline explicit Pipeline(kj::Own<PipelineHook>&& hook): hook(kj::mv(hook)) {}
cannam@49: 
cannam@49:     Pipeline noop();
cannam@49:     // Just make a copy.
cannam@49: 
cannam@49:     Pipeline getPointerField(uint16_t pointerIndex);
cannam@49:     // Deprecated. In the future, we should use .asAnyStruct.getPointerField.
cannam@49: 
cannam@49:     inline AnyStruct::Pipeline asAnyStruct();
cannam@49: 
cannam@49:     kj::Own<ClientHook> asCap();
cannam@49:     // Expect that the result is a capability and construct a pipelined version of it now.
cannam@49: 
cannam@49:     inline kj::Own<PipelineHook> releasePipelineHook() { return kj::mv(hook); }
cannam@49:     // For use by RPC implementations.
cannam@49: 
cannam@49:     template <typename T, typename = kj::EnableIf<CAPNP_KIND(FromClient<T>) == Kind::INTERFACE>>
cannam@49:     inline operator T() { return T(asCap()); }
cannam@49: 
cannam@49:   private:
cannam@49:     kj::Own<PipelineHook> hook;
cannam@49:     kj::Array<PipelineOp> ops;
cannam@49: 
cannam@49:     inline Pipeline(kj::Own<PipelineHook>&& hook, kj::Array<PipelineOp>&& ops)
cannam@49:         : hook(kj::mv(hook)), ops(kj::mv(ops)) {}
cannam@49: 
cannam@49:     friend class LocalClient;
cannam@49:     friend class PipelineHook;
cannam@49:     friend class AnyStruct::Pipeline;
cannam@49:   };
cannam@49: #endif  // !CAPNP_LITE
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: class Orphan<AnyPointer> {
cannam@49:   // An orphaned object of unknown type.
cannam@49: 
cannam@49: public:
cannam@49:   Orphan() = default;
cannam@49:   KJ_DISALLOW_COPY(Orphan);
cannam@49:   Orphan(Orphan&&) = default;
cannam@49:   inline Orphan(_::OrphanBuilder&& builder)
cannam@49:       : builder(kj::mv(builder)) {}
cannam@49: 
cannam@49:   Orphan& operator=(Orphan&&) = default;
cannam@49: 
cannam@49:   template <typename T>
cannam@49:   inline Orphan(Orphan<T>&& other): builder(kj::mv(other.builder)) {}
cannam@49:   template <typename T>
cannam@49:   inline Orphan& operator=(Orphan<T>&& other) { builder = kj::mv(other.builder); return *this; }
cannam@49:   // Cast from typed orphan.
cannam@49: 
cannam@49:   // It's not possible to get an AnyPointer::{Reader,Builder} directly since there is no
cannam@49:   // underlying pointer (the pointer would normally live in the parent, but this object is
cannam@49:   // orphaned).  It is possible, however, to request typed readers/builders.
cannam@49: 
cannam@49:   template <typename T>
cannam@49:   inline BuilderFor<T> getAs();
cannam@49:   template <typename T>
cannam@49:   inline BuilderFor<T> getAs(StructSchema schema);
cannam@49:   template <typename T>
cannam@49:   inline BuilderFor<T> getAs(ListSchema schema);
cannam@49:   template <typename T>
cannam@49:   inline typename T::Client getAs(InterfaceSchema schema);
cannam@49:   template <typename T>
cannam@49:   inline ReaderFor<T> getAsReader() const;
cannam@49:   template <typename T>
cannam@49:   inline ReaderFor<T> getAsReader(StructSchema schema) const;
cannam@49:   template <typename T>
cannam@49:   inline ReaderFor<T> getAsReader(ListSchema schema) const;
cannam@49:   template <typename T>
cannam@49:   inline typename T::Client getAsReader(InterfaceSchema schema) const;
cannam@49: 
cannam@49:   template <typename T>
cannam@49:   inline Orphan<T> releaseAs();
cannam@49:   template <typename T>
cannam@49:   inline Orphan<T> releaseAs(StructSchema schema);
cannam@49:   template <typename T>
cannam@49:   inline Orphan<T> releaseAs(ListSchema schema);
cannam@49:   template <typename T>
cannam@49:   inline Orphan<T> releaseAs(InterfaceSchema schema);
cannam@49:   // Down-cast the orphan to a specific type.
cannam@49: 
cannam@49:   inline bool operator==(decltype(nullptr)) const { return builder == nullptr; }
cannam@49:   inline bool operator!=(decltype(nullptr)) const { return builder != nullptr; }
cannam@49: 
cannam@49: private:
cannam@49:   _::OrphanBuilder builder;
cannam@49: 
cannam@49:   template <typename, Kind>
cannam@49:   friend struct _::PointerHelpers;
cannam@49:   friend class Orphanage;
cannam@49:   template <typename U>
cannam@49:   friend class Orphan;
cannam@49:   friend class AnyPointer::Builder;
cannam@49: };
cannam@49: 
cannam@49: template <Kind k> struct AnyTypeFor_;
cannam@49: template <> struct AnyTypeFor_<Kind::STRUCT> { typedef AnyStruct Type; };
cannam@49: template <> struct AnyTypeFor_<Kind::LIST> { typedef AnyList Type; };
cannam@49: 
cannam@49: template <typename T>
cannam@49: using AnyTypeFor = typename AnyTypeFor_<CAPNP_KIND(T)>::Type;
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline ReaderFor<AnyTypeFor<FromReader<T>>> toAny(T&& value) {
cannam@49:   return ReaderFor<AnyTypeFor<FromReader<T>>>(
cannam@49:       _::PointerHelpers<FromReader<T>>::getInternalReader(value));
cannam@49: }
cannam@49: template <typename T>
cannam@49: inline BuilderFor<AnyTypeFor<FromBuilder<T>>> toAny(T&& value) {
cannam@49:   return BuilderFor<AnyTypeFor<FromBuilder<T>>>(
cannam@49:       _::PointerHelpers<FromBuilder<T>>::getInternalBuilder(kj::mv(value)));
cannam@49: }
cannam@49: 
cannam@49: template <>
cannam@49: struct List<AnyPointer, Kind::OTHER> {
cannam@49:   // Note: This cannot be used for a list of structs, since such lists are not encoded as pointer
cannam@49:   //   lists! Use List<AnyStruct>.
cannam@49: 
cannam@49:   List() = delete;
cannam@49: 
cannam@49:   class Reader {
cannam@49:   public:
cannam@49:     typedef List<AnyPointer> Reads;
cannam@49: 
cannam@49:     inline Reader(): reader(ElementSize::POINTER) {}
cannam@49:     inline explicit Reader(_::ListReader reader): reader(reader) {}
cannam@49: 
cannam@49:     inline uint size() const { return reader.size() / ELEMENTS; }
cannam@49:     inline AnyPointer::Reader operator[](uint index) const {
cannam@49:       KJ_IREQUIRE(index < size());
cannam@49:       return AnyPointer::Reader(reader.getPointerElement(index * ELEMENTS));
cannam@49:     }
cannam@49: 
cannam@49:     typedef _::IndexingIterator<const Reader, typename AnyPointer::Reader> Iterator;
cannam@49:     inline Iterator begin() const { return Iterator(this, 0); }
cannam@49:     inline Iterator end() const { return Iterator(this, size()); }
cannam@49: 
cannam@49:   private:
cannam@49:     _::ListReader reader;
cannam@49:     template <typename U, Kind K>
cannam@49:     friend struct _::PointerHelpers;
cannam@49:     template <typename U, Kind K>
cannam@49:     friend struct List;
cannam@49:     friend class Orphanage;
cannam@49:     template <typename U, Kind K>
cannam@49:     friend struct ToDynamic_;
cannam@49:   };
cannam@49: 
cannam@49:   class Builder {
cannam@49:   public:
cannam@49:     typedef List<AnyPointer> Builds;
cannam@49: 
cannam@49:     Builder() = delete;
cannam@49:     inline Builder(decltype(nullptr)): builder(ElementSize::POINTER) {}
cannam@49:     inline explicit Builder(_::ListBuilder builder): builder(builder) {}
cannam@49: 
cannam@49:     inline operator Reader() const { return Reader(builder.asReader()); }
cannam@49:     inline Reader asReader() const { return Reader(builder.asReader()); }
cannam@49: 
cannam@49:     inline uint size() const { return builder.size() / ELEMENTS; }
cannam@49:     inline AnyPointer::Builder operator[](uint index) {
cannam@49:       KJ_IREQUIRE(index < size());
cannam@49:       return AnyPointer::Builder(builder.getPointerElement(index * ELEMENTS));
cannam@49:     }
cannam@49: 
cannam@49:     typedef _::IndexingIterator<Builder, typename AnyPointer::Builder> Iterator;
cannam@49:     inline Iterator begin() { return Iterator(this, 0); }
cannam@49:     inline Iterator end() { return Iterator(this, size()); }
cannam@49: 
cannam@49:   private:
cannam@49:     _::ListBuilder builder;
cannam@49:     template <typename, Kind>
cannam@49:     friend struct _::PointerHelpers;
cannam@49:     friend class Orphanage;
cannam@49:     template <typename, Kind>
cannam@49:     friend struct ToDynamic_;
cannam@49:   };
cannam@49: };
cannam@49: 
cannam@49: class AnyStruct::Reader {
cannam@49: public:
cannam@49:   typedef AnyStruct Reads;
cannam@49: 
cannam@49:   Reader() = default;
cannam@49:   inline Reader(_::StructReader reader): _reader(reader) {}
cannam@49: 
cannam@49:   template <typename T, typename = kj::EnableIf<CAPNP_KIND(FromReader<T>) == Kind::STRUCT>>
cannam@49:   inline Reader(T&& value)
cannam@49:       : _reader(_::PointerHelpers<FromReader<T>>::getInternalReader(kj::fwd<T>(value))) {}
cannam@49: 
cannam@49:   kj::ArrayPtr<const byte> getDataSection() {
cannam@49:     return _reader.getDataSectionAsBlob();
cannam@49:   }
cannam@49:   List<AnyPointer>::Reader getPointerSection() {
cannam@49:     return List<AnyPointer>::Reader(_reader.getPointerSectionAsList());
cannam@49:   }
cannam@49: 
cannam@49:   kj::Array<word> canonicalize() {
cannam@49:     return _reader.canonicalize();
cannam@49:   }
cannam@49: 
cannam@49:   Equality equals(AnyStruct::Reader right);
cannam@49:   bool operator==(AnyStruct::Reader right);
cannam@49:   inline bool operator!=(AnyStruct::Reader right) {
cannam@49:     return !(*this == right);
cannam@49:   }
cannam@49: 
cannam@49:   template <typename T>
cannam@49:   ReaderFor<T> as() const {
cannam@49:     // T must be a struct type.
cannam@49:     return typename T::Reader(_reader);
cannam@49:   }
cannam@49: private:
cannam@49:   _::StructReader _reader;
cannam@49: 
cannam@49:   template <typename, Kind>
cannam@49:   friend struct _::PointerHelpers;
cannam@49:   friend class Orphanage;
cannam@49: };
cannam@49: 
cannam@49: class AnyStruct::Builder {
cannam@49: public:
cannam@49:   typedef AnyStruct Builds;
cannam@49: 
cannam@49:   inline Builder(decltype(nullptr)) {}
cannam@49:   inline Builder(_::StructBuilder builder): _builder(builder) {}
cannam@49: 
cannam@49: #if !_MSC_VER  // TODO(msvc): MSVC ICEs on this. Try restoring when compiler improves.
cannam@49:   template <typename T, typename = kj::EnableIf<CAPNP_KIND(FromBuilder<T>) == Kind::STRUCT>>
cannam@49:   inline Builder(T&& value)
cannam@49:       : _builder(_::PointerHelpers<FromBuilder<T>>::getInternalBuilder(kj::fwd<T>(value))) {}
cannam@49: #endif
cannam@49: 
cannam@49:   inline kj::ArrayPtr<byte> getDataSection() {
cannam@49:     return _builder.getDataSectionAsBlob();
cannam@49:   }
cannam@49:   List<AnyPointer>::Builder getPointerSection() {
cannam@49:     return List<AnyPointer>::Builder(_builder.getPointerSectionAsList());
cannam@49:   }
cannam@49: 
cannam@49:   inline Equality equals(AnyStruct::Reader right) {
cannam@49:     return asReader().equals(right);
cannam@49:   }
cannam@49:   inline bool operator==(AnyStruct::Reader right) {
cannam@49:     return asReader() == right;
cannam@49:   }
cannam@49:   inline bool operator!=(AnyStruct::Reader right) {
cannam@49:     return !(*this == right);
cannam@49:   }
cannam@49: 
cannam@49:   inline operator Reader() const { return Reader(_builder.asReader()); }
cannam@49:   inline Reader asReader() const { return Reader(_builder.asReader()); }
cannam@49: 
cannam@49:   template <typename T>
cannam@49:   BuilderFor<T> as() {
cannam@49:     // T must be a struct type.
cannam@49:     return typename T::Builder(_builder);
cannam@49:   }
cannam@49: private:
cannam@49:   _::StructBuilder _builder;
cannam@49:   friend class Orphanage;
cannam@49:   friend class CapBuilderContext;
cannam@49: };
cannam@49: 
cannam@49: #if !CAPNP_LITE
cannam@49: class AnyStruct::Pipeline {
cannam@49: public:
cannam@49:   inline Pipeline(decltype(nullptr)): typeless(nullptr) {}
cannam@49:   inline explicit Pipeline(AnyPointer::Pipeline&& typeless)
cannam@49:       : typeless(kj::mv(typeless)) {}
cannam@49: 
cannam@49:   inline AnyPointer::Pipeline getPointerField(uint16_t pointerIndex) {
cannam@49:     // Return a new Promise representing a sub-object of the result.  `pointerIndex` is the index
cannam@49:     // of the sub-object within the pointer section of the result (the result must be a struct).
cannam@49:     //
cannam@49:     // TODO(perf):  On GCC 4.8 / Clang 3.3, use rvalue qualifiers to avoid the need for copies.
cannam@49:     //   Also make `ops` into a Vector to optimize this.
cannam@49:     return typeless.getPointerField(pointerIndex);
cannam@49:   }
cannam@49: 
cannam@49: private:
cannam@49:   AnyPointer::Pipeline typeless;
cannam@49: };
cannam@49: #endif  // !CAPNP_LITE
cannam@49: 
cannam@49: class List<AnyStruct, Kind::OTHER>::Reader {
cannam@49: public:
cannam@49:   typedef List<AnyStruct> Reads;
cannam@49: 
cannam@49:   inline Reader(): reader(ElementSize::INLINE_COMPOSITE) {}
cannam@49:   inline explicit Reader(_::ListReader reader): reader(reader) {}
cannam@49: 
cannam@49:   inline uint size() const { return reader.size() / ELEMENTS; }
cannam@49:   inline AnyStruct::Reader operator[](uint index) const {
cannam@49:     KJ_IREQUIRE(index < size());
cannam@49:     return AnyStruct::Reader(reader.getStructElement(index * ELEMENTS));
cannam@49:   }
cannam@49: 
cannam@49:   typedef _::IndexingIterator<const Reader, typename AnyStruct::Reader> Iterator;
cannam@49:   inline Iterator begin() const { return Iterator(this, 0); }
cannam@49:   inline Iterator end() const { return Iterator(this, size()); }
cannam@49: 
cannam@49: private:
cannam@49:   _::ListReader reader;
cannam@49:   template <typename U, Kind K>
cannam@49:   friend struct _::PointerHelpers;
cannam@49:   template <typename U, Kind K>
cannam@49:   friend struct List;
cannam@49:   friend class Orphanage;
cannam@49:   template <typename U, Kind K>
cannam@49:   friend struct ToDynamic_;
cannam@49: };
cannam@49: 
cannam@49: class List<AnyStruct, Kind::OTHER>::Builder {
cannam@49: public:
cannam@49:   typedef List<AnyStruct> Builds;
cannam@49: 
cannam@49:   Builder() = delete;
cannam@49:   inline Builder(decltype(nullptr)): builder(ElementSize::INLINE_COMPOSITE) {}
cannam@49:   inline explicit Builder(_::ListBuilder builder): builder(builder) {}
cannam@49: 
cannam@49:   inline operator Reader() const { return Reader(builder.asReader()); }
cannam@49:   inline Reader asReader() const { return Reader(builder.asReader()); }
cannam@49: 
cannam@49:   inline uint size() const { return builder.size() / ELEMENTS; }
cannam@49:   inline AnyStruct::Builder operator[](uint index) {
cannam@49:     KJ_IREQUIRE(index < size());
cannam@49:     return AnyStruct::Builder(builder.getStructElement(index * ELEMENTS));
cannam@49:   }
cannam@49: 
cannam@49:   typedef _::IndexingIterator<Builder, typename AnyStruct::Builder> Iterator;
cannam@49:   inline Iterator begin() { return Iterator(this, 0); }
cannam@49:   inline Iterator end() { return Iterator(this, size()); }
cannam@49: 
cannam@49: private:
cannam@49:   _::ListBuilder builder;
cannam@49:   template <typename U, Kind K>
cannam@49:   friend struct _::PointerHelpers;
cannam@49:   friend class Orphanage;
cannam@49:   template <typename U, Kind K>
cannam@49:   friend struct ToDynamic_;
cannam@49: };
cannam@49: 
cannam@49: class AnyList::Reader {
cannam@49: public:
cannam@49:   typedef AnyList Reads;
cannam@49: 
cannam@49:   inline Reader(): _reader(ElementSize::VOID) {}
cannam@49:   inline Reader(_::ListReader reader): _reader(reader) {}
cannam@49: 
cannam@49: #if !_MSC_VER  // TODO(msvc): MSVC ICEs on this. Try restoring when compiler improves.
cannam@49:   template <typename T, typename = kj::EnableIf<CAPNP_KIND(FromReader<T>) == Kind::LIST>>
cannam@49:   inline Reader(T&& value)
cannam@49:       : _reader(_::PointerHelpers<FromReader<T>>::getInternalReader(kj::fwd<T>(value))) {}
cannam@49: #endif
cannam@49: 
cannam@49:   inline ElementSize getElementSize() { return _reader.getElementSize(); }
cannam@49:   inline uint size() { return _reader.size() / ELEMENTS; }
cannam@49: 
cannam@49:   inline kj::ArrayPtr<const byte> getRawBytes() { return _reader.asRawBytes(); }
cannam@49: 
cannam@49:   Equality equals(AnyList::Reader right);
cannam@49:   bool operator==(AnyList::Reader right);
cannam@49:   inline bool operator!=(AnyList::Reader right) {
cannam@49:     return !(*this == right);
cannam@49:   }
cannam@49: 
cannam@49:   template <typename T> ReaderFor<T> as() {
cannam@49:     // T must be List<U>.
cannam@49:     return ReaderFor<T>(_reader);
cannam@49:   }
cannam@49: private:
cannam@49:   _::ListReader _reader;
cannam@49: 
cannam@49:   template <typename, Kind>
cannam@49:   friend struct _::PointerHelpers;
cannam@49:   friend class Orphanage;
cannam@49: };
cannam@49: 
cannam@49: class AnyList::Builder {
cannam@49: public:
cannam@49:   typedef AnyList Builds;
cannam@49: 
cannam@49:   inline Builder(decltype(nullptr)): _builder(ElementSize::VOID) {}
cannam@49:   inline Builder(_::ListBuilder builder): _builder(builder) {}
cannam@49: 
cannam@49: #if !_MSC_VER  // TODO(msvc): MSVC ICEs on this. Try restoring when compiler improves.
cannam@49:   template <typename T, typename = kj::EnableIf<CAPNP_KIND(FromBuilder<T>) == Kind::LIST>>
cannam@49:   inline Builder(T&& value)
cannam@49:       : _builder(_::PointerHelpers<FromBuilder<T>>::getInternalBuilder(kj::fwd<T>(value))) {}
cannam@49: #endif
cannam@49: 
cannam@49:   inline ElementSize getElementSize() { return _builder.getElementSize(); }
cannam@49:   inline uint size() { return _builder.size() / ELEMENTS; }
cannam@49: 
cannam@49:   Equality equals(AnyList::Reader right);
cannam@49:   inline bool operator==(AnyList::Reader right) {
cannam@49:     return asReader() == right;
cannam@49:   }
cannam@49:   inline bool operator!=(AnyList::Reader right) {
cannam@49:     return !(*this == right);
cannam@49:   }
cannam@49: 
cannam@49:   template <typename T> BuilderFor<T> as() {
cannam@49:     // T must be List<U>.
cannam@49:     return BuilderFor<T>(_builder);
cannam@49:   }
cannam@49: 
cannam@49:   inline operator Reader() const { return Reader(_builder.asReader()); }
cannam@49:   inline Reader asReader() const { return Reader(_builder.asReader()); }
cannam@49: 
cannam@49: private:
cannam@49:   _::ListBuilder _builder;
cannam@49: 
cannam@49:   friend class Orphanage;
cannam@49: };
cannam@49: 
cannam@49: // =======================================================================================
cannam@49: // Pipeline helpers
cannam@49: //
cannam@49: // These relate to capabilities, but we don't declare them in capability.h because generated code
cannam@49: // for structs needs to know about these, even in files that contain no interfaces.
cannam@49: 
cannam@49: #if !CAPNP_LITE
cannam@49: 
cannam@49: struct PipelineOp {
cannam@49:   // Corresponds to rpc.capnp's PromisedAnswer.Op.
cannam@49: 
cannam@49:   enum Type {
cannam@49:     NOOP,  // for convenience
cannam@49: 
cannam@49:     GET_POINTER_FIELD
cannam@49: 
cannam@49:     // There may be other types in the future...
cannam@49:   };
cannam@49: 
cannam@49:   Type type;
cannam@49:   union {
cannam@49:     uint16_t pointerIndex;  // for GET_POINTER_FIELD
cannam@49:   };
cannam@49: };
cannam@49: 
cannam@49: class PipelineHook {
cannam@49:   // Represents a currently-running call, and implements pipelined requests on its result.
cannam@49: 
cannam@49: public:
cannam@49:   virtual kj::Own<PipelineHook> addRef() = 0;
cannam@49:   // Increment this object's reference count.
cannam@49: 
cannam@49:   virtual kj::Own<ClientHook> getPipelinedCap(kj::ArrayPtr<const PipelineOp> ops) = 0;
cannam@49:   // Extract a promised Capability from the results.
cannam@49: 
cannam@49:   virtual kj::Own<ClientHook> getPipelinedCap(kj::Array<PipelineOp>&& ops);
cannam@49:   // Version of getPipelinedCap() passing the array by move.  May avoid a copy in some cases.
cannam@49:   // Default implementation just calls the other version.
cannam@49: 
cannam@49:   template <typename Pipeline, typename = FromPipeline<Pipeline>>
cannam@49:   static inline kj::Own<PipelineHook> from(Pipeline&& pipeline);
cannam@49: 
cannam@49: private:
cannam@49:   template <typename T> struct FromImpl;
cannam@49: };
cannam@49: 
cannam@49: #endif  // !CAPNP_LITE
cannam@49: 
cannam@49: // =======================================================================================
cannam@49: // Inline implementation details
cannam@49: 
cannam@49: inline MessageSize AnyPointer::Reader::targetSize() const {
cannam@49:   return reader.targetSize().asPublic();
cannam@49: }
cannam@49: 
cannam@49: inline PointerType AnyPointer::Reader::getPointerType() const {
cannam@49:   return reader.getPointerType();
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline ReaderFor<T> AnyPointer::Reader::getAs() const {
cannam@49:   return _::PointerHelpers<T>::get(reader);
cannam@49: }
cannam@49: 
cannam@49: inline MessageSize AnyPointer::Builder::targetSize() const {
cannam@49:   return asReader().targetSize();
cannam@49: }
cannam@49: 
cannam@49: inline PointerType AnyPointer::Builder::getPointerType() {
cannam@49:   return builder.getPointerType();
cannam@49: }
cannam@49: 
cannam@49: inline void AnyPointer::Builder::clear() {
cannam@49:   return builder.clear();
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline BuilderFor<T> AnyPointer::Builder::getAs() {
cannam@49:   return _::PointerHelpers<T>::get(builder);
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline BuilderFor<T> AnyPointer::Builder::initAs() {
cannam@49:   return _::PointerHelpers<T>::init(builder);
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline BuilderFor<T> AnyPointer::Builder::initAs(uint elementCount) {
cannam@49:   return _::PointerHelpers<T>::init(builder, elementCount);
cannam@49: }
cannam@49: 
cannam@49: inline AnyList::Builder AnyPointer::Builder::initAsAnyList(
cannam@49:     ElementSize elementSize, uint elementCount) {
cannam@49:   return AnyList::Builder(builder.initList(elementSize, elementCount * ELEMENTS));
cannam@49: }
cannam@49: 
cannam@49: inline List<AnyStruct>::Builder AnyPointer::Builder::initAsListOfAnyStruct(
cannam@49:     uint dataWordCount, uint pointerCount, uint elementCount) {
cannam@49:   return List<AnyStruct>::Builder(builder.initStructList(elementCount * ELEMENTS,
cannam@49:       _::StructSize(dataWordCount * WORDS, pointerCount * POINTERS)));
cannam@49: }
cannam@49: 
cannam@49: inline AnyStruct::Builder AnyPointer::Builder::initAsAnyStruct(uint dataWordCount, uint pointerCount) {
cannam@49:   return AnyStruct::Builder(builder.initStruct(
cannam@49:       _::StructSize(dataWordCount * WORDS, pointerCount * POINTERS)));
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline void AnyPointer::Builder::setAs(ReaderFor<T> value) {
cannam@49:   return _::PointerHelpers<T>::set(builder, value);
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline void AnyPointer::Builder::setCanonicalAs(ReaderFor<T> value) {
cannam@49:   return _::PointerHelpers<T>::setCanonical(builder, value);
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline void AnyPointer::Builder::setAs(
cannam@49:     std::initializer_list<ReaderFor<ListElementType<T>>> list) {
cannam@49:   return _::PointerHelpers<T>::set(builder, list);
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline void AnyPointer::Builder::adopt(Orphan<T>&& orphan) {
cannam@49:   _::PointerHelpers<T>::adopt(builder, kj::mv(orphan));
cannam@49: }
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline Orphan<T> AnyPointer::Builder::disownAs() {
cannam@49:   return _::PointerHelpers<T>::disown(builder);
cannam@49: }
cannam@49: 
cannam@49: inline Orphan<AnyPointer> AnyPointer::Builder::disown() {
cannam@49:   return Orphan<AnyPointer>(builder.disown());
cannam@49: }
cannam@49: 
cannam@49: template <> struct ReaderFor_ <AnyPointer, Kind::OTHER> { typedef AnyPointer::Reader Type; };
cannam@49: template <> struct BuilderFor_<AnyPointer, Kind::OTHER> { typedef AnyPointer::Builder Type; };
cannam@49: template <> struct ReaderFor_ <AnyStruct, Kind::OTHER> { typedef AnyStruct::Reader Type; };
cannam@49: template <> struct BuilderFor_<AnyStruct, Kind::OTHER> { typedef AnyStruct::Builder Type; };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerReader<AnyPointer, Kind::OTHER> {
cannam@49:   static inline _::PointerReader apply(const AnyPointer::Reader& t) {
cannam@49:     return t.reader;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerBuilder<AnyPointer, Kind::OTHER> {
cannam@49:   static inline _::PointerBuilder apply(AnyPointer::Builder& t) {
cannam@49:     return t.builder;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerReader<AnyStruct, Kind::OTHER> {
cannam@49:   static inline _::StructReader apply(const AnyStruct::Reader& t) {
cannam@49:     return t._reader;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerBuilder<AnyStruct, Kind::OTHER> {
cannam@49:   static inline _::StructBuilder apply(AnyStruct::Builder& t) {
cannam@49:     return t._builder;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerReader<AnyList, Kind::OTHER> {
cannam@49:   static inline _::ListReader apply(const AnyList::Reader& t) {
cannam@49:     return t._reader;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct Orphanage::GetInnerBuilder<AnyList, Kind::OTHER> {
cannam@49:   static inline _::ListBuilder apply(AnyList::Builder& t) {
cannam@49:     return t._builder;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <typename T>
cannam@49: inline BuilderFor<T> Orphan<AnyPointer>::getAs() {
cannam@49:   return _::OrphanGetImpl<T>::apply(builder);
cannam@49: }
cannam@49: template <typename T>
cannam@49: inline ReaderFor<T> Orphan<AnyPointer>::getAsReader() const {
cannam@49:   return _::OrphanGetImpl<T>::applyReader(builder);
cannam@49: }
cannam@49: template <typename T>
cannam@49: inline Orphan<T> Orphan<AnyPointer>::releaseAs() {
cannam@49:   return Orphan<T>(kj::mv(builder));
cannam@49: }
cannam@49: 
cannam@49: // Using AnyPointer as the template type should work...
cannam@49: 
cannam@49: template <>
cannam@49: inline typename AnyPointer::Reader AnyPointer::Reader::getAs<AnyPointer>() const {
cannam@49:   return *this;
cannam@49: }
cannam@49: template <>
cannam@49: inline typename AnyPointer::Builder AnyPointer::Builder::getAs<AnyPointer>() {
cannam@49:   return *this;
cannam@49: }
cannam@49: template <>
cannam@49: inline typename AnyPointer::Builder AnyPointer::Builder::initAs<AnyPointer>() {
cannam@49:   clear();
cannam@49:   return *this;
cannam@49: }
cannam@49: template <>
cannam@49: inline void AnyPointer::Builder::setAs<AnyPointer>(AnyPointer::Reader value) {
cannam@49:   return builder.copyFrom(value.reader);
cannam@49: }
cannam@49: template <>
cannam@49: inline void AnyPointer::Builder::adopt<AnyPointer>(Orphan<AnyPointer>&& orphan) {
cannam@49:   builder.adopt(kj::mv(orphan.builder));
cannam@49: }
cannam@49: template <>
cannam@49: inline Orphan<AnyPointer> AnyPointer::Builder::disownAs<AnyPointer>() {
cannam@49:   return Orphan<AnyPointer>(builder.disown());
cannam@49: }
cannam@49: template <>
cannam@49: inline Orphan<AnyPointer> Orphan<AnyPointer>::releaseAs() {
cannam@49:   return kj::mv(*this);
cannam@49: }
cannam@49: 
cannam@49: namespace _ {  // private
cannam@49: 
cannam@49: // Specialize PointerHelpers for AnyPointer.
cannam@49: 
cannam@49: template <>
cannam@49: struct PointerHelpers<AnyPointer, Kind::OTHER> {
cannam@49:   static inline AnyPointer::Reader get(PointerReader reader,
cannam@49:                                        const void* defaultValue = nullptr,
cannam@49:                                        uint defaultBytes = 0) {
cannam@49:     return AnyPointer::Reader(reader);
cannam@49:   }
cannam@49:   static inline AnyPointer::Builder get(PointerBuilder builder,
cannam@49:                                         const void* defaultValue = nullptr,
cannam@49:                                         uint defaultBytes = 0) {
cannam@49:     return AnyPointer::Builder(builder);
cannam@49:   }
cannam@49:   static inline void set(PointerBuilder builder, AnyPointer::Reader value) {
cannam@49:     AnyPointer::Builder(builder).set(value);
cannam@49:   }
cannam@49:   static inline void adopt(PointerBuilder builder, Orphan<AnyPointer>&& value) {
cannam@49:     builder.adopt(kj::mv(value.builder));
cannam@49:   }
cannam@49:   static inline Orphan<AnyPointer> disown(PointerBuilder builder) {
cannam@49:     return Orphan<AnyPointer>(builder.disown());
cannam@49:   }
cannam@49:   static inline _::PointerReader getInternalReader(const AnyPointer::Reader& reader) {
cannam@49:     return reader.reader;
cannam@49:   }
cannam@49:   static inline _::PointerBuilder getInternalBuilder(AnyPointer::Builder&& builder) {
cannam@49:     return builder.builder;
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct PointerHelpers<AnyStruct, Kind::OTHER> {
cannam@49:   static inline AnyStruct::Reader get(
cannam@49:       PointerReader reader, const word* defaultValue = nullptr) {
cannam@49:     return AnyStruct::Reader(reader.getStruct(defaultValue));
cannam@49:   }
cannam@49:   static inline AnyStruct::Builder get(
cannam@49:       PointerBuilder builder, const word* defaultValue = nullptr) {
cannam@49:     // TODO(someday): Allow specifying the size somehow?
cannam@49:     return AnyStruct::Builder(builder.getStruct(
cannam@49:         _::StructSize(0 * WORDS, 0 * POINTERS), defaultValue));
cannam@49:   }
cannam@49:   static inline void set(PointerBuilder builder, AnyStruct::Reader value) {
cannam@49:     builder.setStruct(value._reader);
cannam@49:   }
cannam@49:   static inline AnyStruct::Builder init(
cannam@49:       PointerBuilder builder, uint dataWordCount, uint pointerCount) {
cannam@49:     return AnyStruct::Builder(builder.initStruct(
cannam@49:         StructSize(dataWordCount * WORDS, pointerCount * POINTERS)));
cannam@49:   }
cannam@49: 
cannam@49:   // TODO(soon): implement these
cannam@49:   static void adopt(PointerBuilder builder, Orphan<AnyStruct>&& value);
cannam@49:   static Orphan<AnyStruct> disown(PointerBuilder builder);
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct PointerHelpers<AnyList, Kind::OTHER> {
cannam@49:   static inline AnyList::Reader get(
cannam@49:       PointerReader reader, const word* defaultValue = nullptr) {
cannam@49:     return AnyList::Reader(reader.getListAnySize(defaultValue));
cannam@49:   }
cannam@49:   static inline AnyList::Builder get(
cannam@49:       PointerBuilder builder, const word* defaultValue = nullptr) {
cannam@49:     return AnyList::Builder(builder.getListAnySize(defaultValue));
cannam@49:   }
cannam@49:   static inline void set(PointerBuilder builder, AnyList::Reader value) {
cannam@49:     builder.setList(value._reader);
cannam@49:   }
cannam@49:   static inline AnyList::Builder init(
cannam@49:       PointerBuilder builder, ElementSize elementSize, uint elementCount) {
cannam@49:     return AnyList::Builder(builder.initList(elementSize, elementCount * ELEMENTS));
cannam@49:   }
cannam@49:   static inline AnyList::Builder init(
cannam@49:       PointerBuilder builder, uint dataWordCount, uint pointerCount, uint elementCount) {
cannam@49:     return AnyList::Builder(builder.initStructList(
cannam@49:         elementCount * ELEMENTS, StructSize(dataWordCount * WORDS, pointerCount * POINTERS)));
cannam@49:   }
cannam@49: 
cannam@49:   // TODO(soon): implement these
cannam@49:   static void adopt(PointerBuilder builder, Orphan<AnyList>&& value);
cannam@49:   static Orphan<AnyList> disown(PointerBuilder builder);
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct OrphanGetImpl<AnyStruct, Kind::OTHER> {
cannam@49:   static inline AnyStruct::Builder apply(_::OrphanBuilder& builder) {
cannam@49:     return AnyStruct::Builder(builder.asStruct(_::StructSize(0 * WORDS, 0 * POINTERS)));
cannam@49:   }
cannam@49:   static inline AnyStruct::Reader applyReader(const _::OrphanBuilder& builder) {
cannam@49:     return AnyStruct::Reader(builder.asStructReader(_::StructSize(0 * WORDS, 0 * POINTERS)));
cannam@49:   }
cannam@49:   static inline void truncateListOf(_::OrphanBuilder& builder, ElementCount size) {
cannam@49:     builder.truncate(size, _::StructSize(0 * WORDS, 0 * POINTERS));
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: }  // namespace _ (private)
cannam@49: 
cannam@49: #if !CAPNP_LITE
cannam@49: 
cannam@49: template <typename T>
cannam@49: struct PipelineHook::FromImpl {
cannam@49:   static inline kj::Own<PipelineHook> apply(typename T::Pipeline&& pipeline) {
cannam@49:     return from(kj::mv(pipeline._typeless));
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <>
cannam@49: struct PipelineHook::FromImpl<AnyPointer> {
cannam@49:   static inline kj::Own<PipelineHook> apply(AnyPointer::Pipeline&& pipeline) {
cannam@49:     return kj::mv(pipeline.hook);
cannam@49:   }
cannam@49: };
cannam@49: 
cannam@49: template <typename Pipeline, typename T>
cannam@49: inline kj::Own<PipelineHook> PipelineHook::from(Pipeline&& pipeline) {
cannam@49:   return FromImpl<T>::apply(kj::fwd<Pipeline>(pipeline));
cannam@49: }
cannam@49: 
cannam@49: #endif  // !CAPNP_LITE
cannam@49: 
cannam@49: }  // namespace capnp
cannam@49: 
cannam@49: #endif  // CAPNP_ANY_H_