sadmen
/
jyoung
mirror of https://github.com/jyoung8607/openpilot.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
open source driving agent
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
198 Commits
109 Branches
34 Tags
1.6 GiB
Tag: Branch: Tree: e9ad7793f0
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'e9ad7793f0'
${ noResults }
jyoung/phonelibs/capnp-cpp/include/capnp/dynamic.h

1644 lines
59 KiB
Raw Normal View History Unescape

openpilot v0.4.6 release
8 years ago
// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
// Licensed under the MIT License:
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// This file defines classes that can be used to manipulate messages based on schemas that are not
// known until runtime. This is also useful for writing generic code that uses schemas to handle
// arbitrary types in a generic way.
//
// Each of the classes defined here has a to() template method which converts an instance back to a
// native type. This method will throw an exception if the requested type does not match the
// schema. To convert native types to dynamic, use DynamicFactory.
//
// As always, underlying data is validated lazily, so you have to actually traverse the whole
// message if you want to validate all content.
#ifndef CAPNP_DYNAMIC_H_
#define CAPNP_DYNAMIC_H_
#if defined(__GNUC__) && !defined(CAPNP_HEADER_WARNINGS)
#pragma GCC system_header
#endif
#include "schema.h"
#include "layout.h"
#include "message.h"
#include "any.h"
#include "capability.h"
namespace capnp {
class MessageReader;
class MessageBuilder;
struct DynamicValue {
DynamicValue() = delete;
enum Type {
UNKNOWN,
// Means that the value has unknown type and content because it comes from a newer version of
// the schema, or from a newer version of Cap'n Proto that has new features that this version
// doesn't understand.
VOID,
BOOL,
INT,
UINT,
FLOAT,
TEXT,
DATA,
LIST,
ENUM,
STRUCT,
CAPABILITY,
ANY_POINTER
};
class Reader;
class Builder;
class Pipeline;
};
class DynamicEnum;
struct DynamicStruct {
DynamicStruct() = delete;
class Reader;
class Builder;
class Pipeline;
};
struct DynamicList {
DynamicList() = delete;
class Reader;
class Builder;
};
struct DynamicCapability {
DynamicCapability() = delete;
class Client;
class Server;
};
template <> class Orphan<DynamicValue>;
template <Kind k> struct DynamicTypeFor_;
template <> struct DynamicTypeFor_<Kind::ENUM> { typedef DynamicEnum Type; };
template <> struct DynamicTypeFor_<Kind::STRUCT> { typedef DynamicStruct Type; };
template <> struct DynamicTypeFor_<Kind::LIST> { typedef DynamicList Type; };
template <> struct DynamicTypeFor_<Kind::INTERFACE> { typedef DynamicCapability Type; };
template <typename T>
using DynamicTypeFor = typename DynamicTypeFor_<kind<T>()>::Type;
template <typename T>
ReaderFor<DynamicTypeFor<FromReader<T>>> toDynamic(T&& value);
template <typename T>
BuilderFor<DynamicTypeFor<FromBuilder<T>>> toDynamic(T&& value);
template <typename T>
DynamicTypeFor<TypeIfEnum<T>> toDynamic(T&& value);
template <typename T>
typename DynamicTypeFor<FromServer<T>>::Client toDynamic(kj::Own<T>&& value);
namespace _ { // private
template <> struct Kind_<DynamicValue > { static constexpr Kind kind = Kind::OTHER; };
template <> struct Kind_<DynamicEnum > { static constexpr Kind kind = Kind::OTHER; };
template <> struct Kind_<DynamicStruct > { static constexpr Kind kind = Kind::OTHER; };
template <> struct Kind_<DynamicList > { static constexpr Kind kind = Kind::OTHER; };
template <> struct Kind_<DynamicCapability> { static constexpr Kind kind = Kind::OTHER; };
} // namespace _ (private)
template <> inline constexpr Style style<DynamicValue >() { return Style::POINTER; }
template <> inline constexpr Style style<DynamicEnum >() { return Style::PRIMITIVE; }
template <> inline constexpr Style style<DynamicStruct >() { return Style::STRUCT; }
template <> inline constexpr Style style<DynamicList >() { return Style::POINTER; }
template <> inline constexpr Style style<DynamicCapability>() { return Style::CAPABILITY; }
// -------------------------------------------------------------------
class DynamicEnum {
public:
DynamicEnum() = default;
inline DynamicEnum(EnumSchema::Enumerant enumerant)
: schema(enumerant.getContainingEnum()), value(enumerant.getOrdinal()) {}
inline DynamicEnum(EnumSchema schema, uint16_t value)
: schema(schema), value(value) {}
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::ENUM>>
inline DynamicEnum(T&& value): DynamicEnum(toDynamic(value)) {}
template <typename T>
inline T as() const { return static_cast<T>(asImpl(typeId<T>())); }
// Cast to a native enum type.
inline EnumSchema getSchema() const { return schema; }
kj::Maybe<EnumSchema::Enumerant> getEnumerant() const;
// Get which enumerant this enum value represents. Returns nullptr if the numeric value does not
// correspond to any enumerant in the schema -- this can happen if the data was built using a
// newer schema that has more values defined.
inline uint16_t getRaw() const { return value; }
// Returns the raw underlying enum value.
private:
EnumSchema schema;
uint16_t value;
uint16_t asImpl(uint64_t requestedTypeId) const;
friend struct DynamicStruct;
friend struct DynamicList;
friend struct DynamicValue;
template <typename T>
friend DynamicTypeFor<TypeIfEnum<T>> toDynamic(T&& value);
};
// -------------------------------------------------------------------
class DynamicStruct::Reader {
public:
typedef DynamicStruct Reads;
Reader() = default;
template <typename T, typename = kj::EnableIf<kind<FromReader<T>>() == Kind::STRUCT>>
inline Reader(T&& value): Reader(toDynamic(value)) {}
inline MessageSize totalSize() const { return reader.totalSize().asPublic(); }
template <typename T>
typename T::Reader as() const;
// Convert the dynamic struct to its compiled-in type.
inline StructSchema getSchema() const { return schema; }
DynamicValue::Reader get(StructSchema::Field field) const;
// Read the given field value.
bool has(StructSchema::Field field) const;
// Tests whether the given field is set to its default value. For pointer values, this does
// not actually traverse the value comparing it with the default, but simply returns true if the
// pointer is non-null. For members of unions, has() returns false if the union member is not
// active, but does not necessarily return true if the member is active (depends on the field's
// value).
kj::Maybe<StructSchema::Field> which() const;
// If the struct contains an (unnamed) union, and the currently-active field within that union
// is known, this returns that field. Otherwise, it returns null. In other words, this returns
// null if there is no union present _or_ if the union's discriminant is set to an unrecognized
// value. This could happen in particular when receiving a message from a sender who has a
// newer version of the protocol and is using a field of the union that you don't know about yet.
DynamicValue::Reader get(kj::StringPtr name) const;
bool has(kj::StringPtr name) const;
// Shortcuts to access fields by name. These throw exceptions if no such field exists.
private:
StructSchema schema;
_::StructReader reader;
inline Reader(StructSchema schema, _::StructReader reader)
: schema(schema), reader(reader) {}
Reader(StructSchema schema, const _::OrphanBuilder& orphan);
bool isSetInUnion(StructSchema::Field field) const;
void verifySetInUnion(StructSchema::Field field) const;
static DynamicValue::Reader getImpl(_::StructReader reader, StructSchema::Field field);
template <typename T, Kind K>
friend struct _::PointerHelpers;
friend class DynamicStruct::Builder;
friend struct DynamicList;
friend class MessageReader;
friend class MessageBuilder;
template <typename T, ::capnp::Kind k>
friend struct ::capnp::ToDynamic_;
friend kj::StringTree _::structString(
_::StructReader reader, const _::RawBrandedSchema& schema);
friend class Orphanage;
friend class Orphan<DynamicStruct>;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
class DynamicStruct::Builder {
public:
typedef DynamicStruct Builds;
Builder() = default;
inline Builder(decltype(nullptr)) {}
template <typename T, typename = kj::EnableIf<kind<FromBuilder<T>>() == Kind::STRUCT>>
inline Builder(T&& value): Builder(toDynamic(value)) {}
inline MessageSize totalSize() const { return asReader().totalSize(); }
template <typename T>
typename T::Builder as();
// Cast to a particular struct type.
inline StructSchema getSchema() const { return schema; }
DynamicValue::Builder get(StructSchema::Field field);
// Read the given field value.
inline bool has(StructSchema::Field field) { return asReader().has(field); }
// Tests whether the given field is set to its default value. For pointer values, this does
// not actually traverse the value comparing it with the default, but simply returns true if the
// pointer is non-null. For members of unions, has() returns whether the field is currently
// active and the union as a whole is non-default -- so, the only time has() will return false
// for an active union field is if it is the default active field and it has its default value.
kj::Maybe<StructSchema::Field> which();
// If the struct contains an (unnamed) union, and the currently-active field within that union
// is known, this returns that field. Otherwise, it returns null. In other words, this returns
// null if there is no union present _or_ if the union's discriminant is set to an unrecognized
// value. This could happen in particular when receiving a message from a sender who has a
// newer version of the protocol and is using a field of the union that you don't know about yet.
void set(StructSchema::Field field, const DynamicValue::Reader& value);
// Set the given field value.
DynamicValue::Builder init(StructSchema::Field field);
DynamicValue::Builder init(StructSchema::Field field, uint size);
// Init a struct, list, or blob field.
void adopt(StructSchema::Field field, Orphan<DynamicValue>&& orphan);
Orphan<DynamicValue> disown(StructSchema::Field field);
// Adopt/disown. This works even for non-pointer fields: adopt() becomes equivalent to set()
// and disown() becomes like get() followed by clear().
void clear(StructSchema::Field field);
// Clear a field, setting it to its default value. For pointer fields, this actually makes the
// field null.
DynamicValue::Builder get(kj::StringPtr name);
bool has(kj::StringPtr name);
void set(kj::StringPtr name, const DynamicValue::Reader& value);
void set(kj::StringPtr name, std::initializer_list<DynamicValue::Reader> value);
DynamicValue::Builder init(kj::StringPtr name);
DynamicValue::Builder init(kj::StringPtr name, uint size);
void adopt(kj::StringPtr name, Orphan<DynamicValue>&& orphan);
Orphan<DynamicValue> disown(kj::StringPtr name);
void clear(kj::StringPtr name);
// Shortcuts to access fields by name. These throw exceptions if no such field exists.
Reader asReader() const;
private:
StructSchema schema;
_::StructBuilder builder;
inline Builder(StructSchema schema, _::StructBuilder builder)
: schema(schema), builder(builder) {}
Builder(StructSchema schema, _::OrphanBuilder& orphan);
bool isSetInUnion(StructSchema::Field field);
void verifySetInUnion(StructSchema::Field field);
void setInUnion(StructSchema::Field field);
template <typename T, Kind k>
friend struct _::PointerHelpers;
friend struct DynamicList;
friend class MessageReader;
friend class MessageBuilder;
template <typename T, ::capnp::Kind k>
friend struct ::capnp::ToDynamic_;
friend class Orphanage;
friend class Orphan<DynamicStruct>;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
class DynamicStruct::Pipeline {
public:
typedef DynamicStruct Pipelines;
inline Pipeline(decltype(nullptr)): typeless(nullptr) {}
template <typename T>
typename T::Pipeline releaseAs();
// Convert the dynamic pipeline to its compiled-in type.
inline StructSchema getSchema() { return schema; }
DynamicValue::Pipeline get(StructSchema::Field field);
// Read the given field value.
DynamicValue::Pipeline get(kj::StringPtr name);
// Get by string name.
private:
StructSchema schema;
AnyPointer::Pipeline typeless;
inline explicit Pipeline(StructSchema schema, AnyPointer::Pipeline&& typeless)
: schema(schema), typeless(kj::mv(typeless)) {}
friend class Request<DynamicStruct, DynamicStruct>;
};
// -------------------------------------------------------------------
class DynamicList::Reader {
public:
typedef DynamicList Reads;
inline Reader(): reader(ElementSize::VOID) {}
template <typename T, typename = kj::EnableIf<kind<FromReader<T>>() == Kind::LIST>>
inline Reader(T&& value): Reader(toDynamic(value)) {}
template <typename T>
typename T::Reader as() const;
// Try to convert to any List<T>, Data, or Text. Throws an exception if the underlying data
// can't possibly represent the requested type.
inline ListSchema getSchema() const { return schema; }
inline uint size() const { return unbound(reader.size() / ELEMENTS); }
DynamicValue::Reader operator[](uint index) const;
typedef _::IndexingIterator<const Reader, DynamicValue::Reader> Iterator;
inline Iterator begin() const { return Iterator(this, 0); }
inline Iterator end() const { return Iterator(this, size()); }
private:
ListSchema schema;
_::ListReader reader;
Reader(ListSchema schema, _::ListReader reader): schema(schema), reader(reader) {}
Reader(ListSchema schema, const _::OrphanBuilder& orphan);
template <typename T, Kind k>
friend struct _::PointerHelpers;
friend struct DynamicStruct;
friend class DynamicList::Builder;
template <typename T, ::capnp::Kind k>
friend struct ::capnp::ToDynamic_;
friend class Orphanage;
friend class Orphan<DynamicList>;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
class DynamicList::Builder {
public:
typedef DynamicList Builds;
inline Builder(): builder(ElementSize::VOID) {}
inline Builder(decltype(nullptr)): builder(ElementSize::VOID) {}
template <typename T, typename = kj::EnableIf<kind<FromBuilder<T>>() == Kind::LIST>>
inline Builder(T&& value): Builder(toDynamic(value)) {}
template <typename T>
typename T::Builder as();
// Try to convert to any List<T>, Data, or Text. Throws an exception if the underlying data
// can't possibly represent the requested type.
inline ListSchema getSchema() const { return schema; }
inline uint size() const { return unbound(builder.size() / ELEMENTS); }
DynamicValue::Builder operator[](uint index);
void set(uint index, const DynamicValue::Reader& value);
DynamicValue::Builder init(uint index, uint size);
void adopt(uint index, Orphan<DynamicValue>&& orphan);
Orphan<DynamicValue> disown(uint index);
typedef _::IndexingIterator<Builder, DynamicStruct::Builder> Iterator;
inline Iterator begin() { return Iterator(this, 0); }
inline Iterator end() { return Iterator(this, size()); }
void copyFrom(std::initializer_list<DynamicValue::Reader> value);
Reader asReader() const;
private:
ListSchema schema;
_::ListBuilder builder;
Builder(ListSchema schema, _::ListBuilder builder): schema(schema), builder(builder) {}
Builder(ListSchema schema, _::OrphanBuilder& orphan);
template <typename T, Kind k>
friend struct _::PointerHelpers;
friend struct DynamicStruct;
template <typename T, ::capnp::Kind k>
friend struct ::capnp::ToDynamic_;
friend class Orphanage;
template <typename T, Kind k>
friend struct _::OrphanGetImpl;
friend class Orphan<DynamicList>;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
// -------------------------------------------------------------------
class DynamicCapability::Client: public Capability::Client {
public:
typedef DynamicCapability Calls;
typedef DynamicCapability Reads;
Client() = default;
template <typename T, typename = kj::EnableIf<kind<FromClient<T>>() == Kind::INTERFACE>>
inline Client(T&& client);
template <typename T, typename = kj::EnableIf<kj::canConvert<T*, DynamicCapability::Server*>()>>
inline Client(kj::Own<T>&& server);
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::INTERFACE>>
typename T::Client as();
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::INTERFACE>>
typename T::Client releaseAs();
// Convert to any client type.
Client upcast(InterfaceSchema requestedSchema);
// Upcast to a superclass. Throws an exception if `schema` is not a superclass.
inline InterfaceSchema getSchema() { return schema; }
Request<DynamicStruct, DynamicStruct> newRequest(
InterfaceSchema::Method method, kj::Maybe<MessageSize> sizeHint = nullptr);
Request<DynamicStruct, DynamicStruct> newRequest(
kj::StringPtr methodName, kj::Maybe<MessageSize> sizeHint = nullptr);
private:
InterfaceSchema schema;
Client(InterfaceSchema schema, kj::Own<ClientHook>&& hook)
: Capability::Client(kj::mv(hook)), schema(schema) {}
template <typename T>
inline Client(InterfaceSchema schema, kj::Own<T>&& server);
friend struct Capability;
friend struct DynamicStruct;
friend struct DynamicList;
friend struct DynamicValue;
friend class Orphan<DynamicCapability>;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
template <typename T, Kind k>
friend struct _::PointerHelpers;
};
class DynamicCapability::Server: public Capability::Server {
public:
typedef DynamicCapability Serves;
Server(InterfaceSchema schema): schema(schema) {}
virtual kj::Promise<void> call(InterfaceSchema::Method method,
CallContext<DynamicStruct, DynamicStruct> context) = 0;
kj::Promise<void> dispatchCall(uint64_t interfaceId, uint16_t methodId,
CallContext<AnyPointer, AnyPointer> context) override final;
inline InterfaceSchema getSchema() const { return schema; }
private:
InterfaceSchema schema;
};
template <>
class Request<DynamicStruct, DynamicStruct>: public DynamicStruct::Builder {
// Specialization of `Request<T, U>` for DynamicStruct.
public:
inline Request(DynamicStruct::Builder builder, kj::Own<RequestHook>&& hook,
StructSchema resultSchema)
: DynamicStruct::Builder(builder), hook(kj::mv(hook)), resultSchema(resultSchema) {}
RemotePromise<DynamicStruct> send();
// Send the call and return a promise for the results.
private:
kj::Own<RequestHook> hook;
StructSchema resultSchema;
friend class Capability::Client;
friend struct DynamicCapability;
template <typename, typename>
friend class CallContext;
friend class RequestHook;
};
template <>
class CallContext<DynamicStruct, DynamicStruct>: public kj::DisallowConstCopy {
// Wrapper around CallContextHook with a specific return type.
//
// Methods of this class may only be called from within the server's event loop, not from other
// threads.
public:
explicit CallContext(CallContextHook& hook, StructSchema paramType, StructSchema resultType);
DynamicStruct::Reader getParams();
void releaseParams();
DynamicStruct::Builder getResults(kj::Maybe<MessageSize> sizeHint = nullptr);
DynamicStruct::Builder initResults(kj::Maybe<MessageSize> sizeHint = nullptr);
void setResults(DynamicStruct::Reader value);
void adoptResults(Orphan<DynamicStruct>&& value);
Orphanage getResultsOrphanage(kj::Maybe<MessageSize> sizeHint = nullptr);
template <typename SubParams>
kj::Promise<void> tailCall(Request<SubParams, DynamicStruct>&& tailRequest);
void allowCancellation();
private:
CallContextHook* hook;
StructSchema paramType;
StructSchema resultType;
friend class DynamicCapability::Server;
};
// -------------------------------------------------------------------
// Make sure ReaderFor<T> and BuilderFor<T> work for DynamicEnum, DynamicStruct, and
// DynamicList, so that we can define DynamicValue::as().
template <> struct ReaderFor_ <DynamicEnum, Kind::OTHER> { typedef DynamicEnum Type; };
template <> struct BuilderFor_<DynamicEnum, Kind::OTHER> { typedef DynamicEnum Type; };
template <> struct ReaderFor_ <DynamicStruct, Kind::OTHER> { typedef DynamicStruct::Reader Type; };
template <> struct BuilderFor_<DynamicStruct, Kind::OTHER> { typedef DynamicStruct::Builder Type; };
template <> struct ReaderFor_ <DynamicList, Kind::OTHER> { typedef DynamicList::Reader Type; };
template <> struct BuilderFor_<DynamicList, Kind::OTHER> { typedef DynamicList::Builder Type; };
template <> struct ReaderFor_ <DynamicCapability, Kind::OTHER> { typedef DynamicCapability::Client Type; };
template <> struct BuilderFor_<DynamicCapability, Kind::OTHER> { typedef DynamicCapability::Client Type; };
template <> struct PipelineFor_<DynamicCapability, Kind::OTHER> { typedef DynamicCapability::Client Type; };
class DynamicValue::Reader {
public:
typedef DynamicValue Reads;
inline Reader(decltype(nullptr) n = nullptr); // UNKNOWN
inline Reader(Void value);
inline Reader(bool value);
inline Reader(char value);
inline Reader(signed char value);
inline Reader(short value);
inline Reader(int value);
inline Reader(long value);
inline Reader(long long value);
inline Reader(unsigned char value);
inline Reader(unsigned short value);
inline Reader(unsigned int value);
inline Reader(unsigned long value);
inline Reader(unsigned long long value);
inline Reader(float value);
inline Reader(double value);
inline Reader(const char* value); // Text
inline Reader(const Text::Reader& value);
inline Reader(const Data::Reader& value);
inline Reader(const DynamicList::Reader& value);
inline Reader(DynamicEnum value);
inline Reader(const DynamicStruct::Reader& value);
inline Reader(const AnyPointer::Reader& value);
inline Reader(DynamicCapability::Client& value);
inline Reader(DynamicCapability::Client&& value);
template <typename T, typename = kj::EnableIf<kj::canConvert<T*, DynamicCapability::Server*>()>>
inline Reader(kj::Own<T>&& value);
Reader(ConstSchema constant);
template <typename T, typename = decltype(toDynamic(kj::instance<T>()))>
inline Reader(T&& value): Reader(toDynamic(kj::mv(value))) {}
Reader(const Reader& other);
Reader(Reader&& other) noexcept;
~Reader() noexcept(false);
Reader& operator=(const Reader& other);
Reader& operator=(Reader&& other);
// Unfortunately, we cannot use the implicit definitions of these since DynamicCapability is not
// trivially copyable.
template <typename T>
inline ReaderFor<T> as() const { return AsImpl<T>::apply(*this); }
// Use to interpret the value as some Cap'n Proto type. Allowed types are:
// - Void, bool, [u]int{8,16,32,64}_t, float, double, any enum: Returns the raw value.
// - Text, Data, AnyPointer, any struct type: Returns the corresponding Reader.
// - List<T> for any T listed above: Returns List<T>::Reader.
// - DynamicEnum: Returns the corresponding type.
// - DynamicStruct, DynamicList: Returns the corresponding Reader.
// - Any capability type, including DynamicCapability: Returns the corresponding Client.
// - DynamicValue: Returns an identical Reader. Useful to avoid special-casing in generic code.
// (TODO(perf): On GCC 4.8 / Clang 3.3, provide rvalue-qualified version that avoids
// refcounting.)
//
// DynamicValue allows various implicit conversions, mostly just to make the interface friendlier.
// - Any integer can be converted to any other integer type so long as the actual value is within
// the new type's range.
// - Floating-point types can be converted to integers as long as no information would be lost
// in the conversion.
// - Integers can be converted to floating points. This may lose information, but won't throw.
// - Float32/Float64 can be converted between each other. Converting Float64 -> Float32 may lose
// information, but won't throw.
// - Text can be converted to an enum, if the Text matches one of the enumerant names (but not
// vice-versa).
// - Capabilities can be upcast (cast to a supertype), but not downcast.
//
// Any other conversion attempt will throw an exception.
inline Type getType() const { return type; }
// Get the type of this value.
private:
Type type;
union {
Void voidValue;
bool boolValue;
int64_t intValue;
uint64_t uintValue;
double floatValue;
Text::Reader textValue;
Data::Reader dataValue;
DynamicList::Reader listValue;
DynamicEnum enumValue;
DynamicStruct::Reader structValue;
AnyPointer::Reader anyPointerValue;
mutable DynamicCapability::Client capabilityValue;
// Declared mutable because `Client`s normally cannot be const.
// Warning: Copy/move constructors assume all these types are trivially copyable except
// Capability.
};
template <typename T, Kind kind = kind<T>()> struct AsImpl;
// Implementation backing the as() method. Needs to be a struct to allow partial
// specialization. Has a method apply() which does the work.
friend class Orphanage; // to speed up newOrphanCopy(DynamicValue::Reader)
};
class DynamicValue::Builder {
public:
typedef DynamicValue Builds;
inline Builder(decltype(nullptr) n = nullptr); // UNKNOWN
inline Builder(Void value);
inline Builder(bool value);
inline Builder(char value);
inline Builder(signed char value);
inline Builder(short value);
inline Builder(int value);
inline Builder(long value);
inline Builder(long long value);
inline Builder(unsigned char value);
inline Builder(unsigned short value);
inline Builder(unsigned int value);
inline Builder(unsigned long value);
inline Builder(unsigned long long value);
inline Builder(float value);
inline Builder(double value);
inline Builder(Text::Builder value);
inline Builder(Data::Builder value);
inline Builder(DynamicList::Builder value);
inline Builder(DynamicEnum value);
inline Builder(DynamicStruct::Builder value);
inline Builder(AnyPointer::Builder value);
inline Builder(DynamicCapability::Client& value);
inline Builder(DynamicCapability::Client&& value);
template <typename T, typename = decltype(toDynamic(kj::instance<T>()))>
inline Builder(T value): Builder(toDynamic(value)) {}
Builder(Builder& other);
Builder(Builder&& other) noexcept;
~Builder() noexcept(false);
Builder& operator=(Builder& other);
Builder& operator=(Builder&& other);
// Unfortunately, we cannot use the implicit definitions of these since DynamicCapability is not
// trivially copyable.
template <typename T>
inline BuilderFor<T> as() { return AsImpl<T>::apply(*this); }
// See DynamicValue::Reader::as().
inline Type getType() { return type; }
// Get the type of this value.
Reader asReader() const;
private:
Type type;
union {
Void voidValue;
bool boolValue;
int64_t intValue;
uint64_t uintValue;
double floatValue;
Text::Builder textValue;
Data::Builder dataValue;
DynamicList::Builder listValue;
DynamicEnum enumValue;
DynamicStruct::Builder structValue;
AnyPointer::Builder anyPointerValue;
mutable DynamicCapability::Client capabilityValue;
// Declared mutable because `Client`s normally cannot be const.
};
template <typename T, Kind kind = kind<T>()> struct AsImpl;
// Implementation backing the as() method. Needs to be a struct to allow partial
// specialization. Has a method apply() which does the work.
friend class Orphan<DynamicValue>;
};
class DynamicValue::Pipeline {
public:
typedef DynamicValue Pipelines;
inline Pipeline(decltype(nullptr) n = nullptr);
inline Pipeline(DynamicStruct::Pipeline&& value);
inline Pipeline(DynamicCapability::Client&& value);
Pipeline(Pipeline&& other) noexcept;
Pipeline& operator=(Pipeline&& other);
~Pipeline() noexcept(false);
template <typename T>
inline PipelineFor<T> releaseAs() { return AsImpl<T>::apply(*this); }
inline Type getType() { return type; }
// Get the type of this value.
private:
Type type;
union {
DynamicStruct::Pipeline structValue;
DynamicCapability::Client capabilityValue;
};
template <typename T, Kind kind = kind<T>()> struct AsImpl;
// Implementation backing the releaseAs() method. Needs to be a struct to allow partial
// specialization. Has a method apply() which does the work.
};
kj::StringTree KJ_STRINGIFY(const DynamicValue::Reader& value);
kj::StringTree KJ_STRINGIFY(const DynamicValue::Builder& value);
kj::StringTree KJ_STRINGIFY(DynamicEnum value);
kj::StringTree KJ_STRINGIFY(const DynamicStruct::Reader& value);
kj::StringTree KJ_STRINGIFY(const DynamicStruct::Builder& value);
kj::StringTree KJ_STRINGIFY(const DynamicList::Reader& value);
kj::StringTree KJ_STRINGIFY(const DynamicList::Builder& value);
// -------------------------------------------------------------------
// Orphan <-> Dynamic glue
template <>
class Orphan<DynamicStruct> {
public:
Orphan() = default;
KJ_DISALLOW_COPY(Orphan);
Orphan(Orphan&&) = default;
Orphan& operator=(Orphan&&) = default;
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::STRUCT>>
inline Orphan(Orphan<T>&& other): schema(Schema::from<T>()), builder(kj::mv(other.builder)) {}
DynamicStruct::Builder get();
DynamicStruct::Reader getReader() const;
template <typename T>
Orphan<T> releaseAs();
// Like DynamicStruct::Builder::as(), but coerces the Orphan type. Since Orphans are move-only,
// the original Orphan<DynamicStruct> is no longer valid after this call; ownership is
// transferred to the returned Orphan<T>.
inline bool operator==(decltype(nullptr)) const { return builder == nullptr; }
inline bool operator!=(decltype(nullptr)) const { return builder != nullptr; }
private:
StructSchema schema;
_::OrphanBuilder builder;
inline Orphan(StructSchema schema, _::OrphanBuilder&& builder)
: schema(schema), builder(kj::mv(builder)) {}
template <typename, Kind>
friend struct _::PointerHelpers;
friend struct DynamicList;
friend class Orphanage;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
friend class MessageBuilder;
};
template <>
class Orphan<DynamicList> {
public:
Orphan() = default;
KJ_DISALLOW_COPY(Orphan);
Orphan(Orphan&&) = default;
Orphan& operator=(Orphan&&) = default;
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::LIST>>
inline Orphan(Orphan<T>&& other): schema(Schema::from<T>()), builder(kj::mv(other.builder)) {}
DynamicList::Builder get();
DynamicList::Reader getReader() const;
template <typename T>
Orphan<T> releaseAs();
// Like DynamicList::Builder::as(), but coerces the Orphan type. Since Orphans are move-only,
// the original Orphan<DynamicStruct> is no longer valid after this call; ownership is
// transferred to the returned Orphan<T>.
// TODO(someday): Support truncate().
inline bool operator==(decltype(nullptr)) const { return builder == nullptr; }
inline bool operator!=(decltype(nullptr)) const { return builder != nullptr; }
private:
ListSchema schema;
_::OrphanBuilder builder;
inline Orphan(ListSchema schema, _::OrphanBuilder&& builder)
: schema(schema), builder(kj::mv(builder)) {}
template <typename, Kind>
friend struct _::PointerHelpers;
friend struct DynamicList;
friend class Orphanage;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
template <>
class Orphan<DynamicCapability> {
public:
Orphan() = default;
KJ_DISALLOW_COPY(Orphan);
Orphan(Orphan&&) = default;
Orphan& operator=(Orphan&&) = default;
template <typename T, typename = kj::EnableIf<kind<T>() == Kind::INTERFACE>>
inline Orphan(Orphan<T>&& other): schema(Schema::from<T>()), builder(kj::mv(other.builder)) {}
DynamicCapability::Client get();
DynamicCapability::Client getReader() const;
template <typename T>
Orphan<T> releaseAs();
// Like DynamicCapability::Client::as(), but coerces the Orphan type. Since Orphans are move-only,
// the original Orphan<DynamicCapability> is no longer valid after this call; ownership is
// transferred to the returned Orphan<T>.
inline bool operator==(decltype(nullptr)) const { return builder == nullptr; }
inline bool operator!=(decltype(nullptr)) const { return builder != nullptr; }
private:
InterfaceSchema schema;
_::OrphanBuilder builder;
inline Orphan(InterfaceSchema schema, _::OrphanBuilder&& builder)
: schema(schema), builder(kj::mv(builder)) {}
template <typename, Kind>
friend struct _::PointerHelpers;
friend struct DynamicList;
friend class Orphanage;
friend class Orphan<DynamicValue>;
friend class Orphan<AnyPointer>;
};
template <>
class Orphan<DynamicValue> {
public:
inline Orphan(decltype(nullptr) n = nullptr): type(DynamicValue::UNKNOWN) {}
inline Orphan(Void value);
inline Orphan(bool value);
inline Orphan(char value);
inline Orphan(signed char value);
inline Orphan(short value);
inline Orphan(int value);
inline Orphan(long value);
inline Orphan(long long value);
inline Orphan(unsigned char value);
inline Orphan(unsigned short value);
inline Orphan(unsigned int value);
inline Orphan(unsigned long value);
inline Orphan(unsigned long long value);
inline Orphan(float value);
inline Orphan(double value);
inline Orphan(DynamicEnum value);
Orphan(Orphan&&) = default;
template <typename T>
Orphan(Orphan<T>&&);
Orphan(Orphan<AnyPointer>&&);
Orphan(void*) = delete; // So Orphan(bool) doesn't accept pointers.
KJ_DISALLOW_COPY(Orphan);
Orphan& operator=(Orphan&&) = default;
inline DynamicValue::Type getType() { return type; }
DynamicValue::Builder get();
DynamicValue::Reader getReader() const;
template <typename T>
Orphan<T> releaseAs();
// Like DynamicValue::Builder::as(), but coerces the Orphan type. Since Orphans are move-only,
// the original Orphan<DynamicStruct> is no longer valid after this call; ownership is
// transferred to the returned Orphan<T>.
private:
DynamicValue::Type type;
union {
Void voidValue;
bool boolValue;
int64_t intValue;
uint64_t uintValue;
double floatValue;
DynamicEnum enumValue;
StructSchema structSchema;
ListSchema listSchema;
InterfaceSchema interfaceSchema;
};
_::OrphanBuilder builder;
// Only used if `type` is a pointer type.
Orphan(DynamicValue::Builder value, _::OrphanBuilder&& builder);
Orphan(DynamicValue::Type type, _::OrphanBuilder&& builder)
: type(type), builder(kj::mv(builder)) {}
Orphan(StructSchema structSchema, _::OrphanBuilder&& builder)
: type(DynamicValue::STRUCT), structSchema(structSchema), builder(kj::mv(builder)) {}
Orphan(ListSchema listSchema, _::OrphanBuilder&& builder)
: type(DynamicValue::LIST), listSchema(listSchema), builder(kj::mv(builder)) {}
template <typename, Kind>
friend struct _::PointerHelpers;
friend struct DynamicStruct;
friend struct DynamicList;
friend struct AnyPointer;
friend class Orphanage;
};
template <typename T>
inline Orphan<DynamicValue>::Orphan(Orphan<T>&& other)
: Orphan(other.get(), kj::mv(other.builder)) {}
inline Orphan<DynamicValue>::Orphan(Orphan<AnyPointer>&& other)
: type(DynamicValue::ANY_POINTER), builder(kj::mv(other.builder)) {}
template <typename T>
Orphan<T> Orphan<DynamicStruct>::releaseAs() {
get().as<T>(); // type check
return Orphan<T>(kj::mv(builder));
}
template <typename T>
Orphan<T> Orphan<DynamicList>::releaseAs() {
get().as<T>(); // type check
return Orphan<T>(kj::mv(builder));
}
template <typename T>
Orphan<T> Orphan<DynamicCapability>::releaseAs() {
get().as<T>(); // type check
return Orphan<T>(kj::mv(builder));
}
template <typename T>
Orphan<T> Orphan<DynamicValue>::releaseAs() {
get().as<T>(); // type check
type = DynamicValue::UNKNOWN;
return Orphan<T>(kj::mv(builder));
}
template <>
Orphan<AnyPointer> Orphan<DynamicValue>::releaseAs<AnyPointer>();
template <>
Orphan<DynamicStruct> Orphan<DynamicValue>::releaseAs<DynamicStruct>();
template <>
Orphan<DynamicList> Orphan<DynamicValue>::releaseAs<DynamicList>();
template <>
Orphan<DynamicCapability> Orphan<DynamicValue>::releaseAs<DynamicCapability>();
template <>
struct Orphanage::GetInnerBuilder<DynamicStruct, Kind::OTHER> {
static inline _::StructBuilder apply(DynamicStruct::Builder& t) {
return t.builder;
}
};
template <>
struct Orphanage::GetInnerBuilder<DynamicList, Kind::OTHER> {
static inline _::ListBuilder apply(DynamicList::Builder& t) {
return t.builder;
}
};
template <>
inline Orphan<DynamicStruct> Orphanage::newOrphanCopy<DynamicStruct::Reader>(
DynamicStruct::Reader copyFrom) const {
return Orphan<DynamicStruct>(
copyFrom.getSchema(), _::OrphanBuilder::copy(arena, capTable, copyFrom.reader));
}
template <>
inline Orphan<DynamicList> Orphanage::newOrphanCopy<DynamicList::Reader>(
DynamicList::Reader copyFrom) const {
return Orphan<DynamicList>(copyFrom.getSchema(),
_::OrphanBuilder::copy(arena, capTable, copyFrom.reader));
}
template <>
inline Orphan<DynamicCapability> Orphanage::newOrphanCopy<DynamicCapability::Client>(
DynamicCapability::Client copyFrom) const {
return Orphan<DynamicCapability>(
copyFrom.getSchema(), _::OrphanBuilder::copy(arena, capTable, copyFrom.hook->addRef()));
}
template <>
Orphan<DynamicValue> Orphanage::newOrphanCopy<DynamicValue::Reader>(
DynamicValue::Reader copyFrom) const;
namespace _ { // private
template <>
struct PointerHelpers<DynamicStruct, Kind::OTHER> {
// getDynamic() is used when an AnyPointer's get() accessor is passed arguments, because for
// non-dynamic types PointerHelpers::get() takes a default value as the third argument, and we
// don't want people to accidentally be able to provide their own default value.
static DynamicStruct::Reader getDynamic(PointerReader reader, StructSchema schema);
static DynamicStruct::Builder getDynamic(PointerBuilder builder, StructSchema schema);
static void set(PointerBuilder builder, const DynamicStruct::Reader& value);
static DynamicStruct::Builder init(PointerBuilder builder, StructSchema schema);
static inline void adopt(PointerBuilder builder, Orphan<DynamicStruct>&& value) {
builder.adopt(kj::mv(value.builder));
}
static inline Orphan<DynamicStruct> disown(PointerBuilder builder, StructSchema schema) {
return Orphan<DynamicStruct>(schema, builder.disown());
}
};
template <>
struct PointerHelpers<DynamicList, Kind::OTHER> {
// getDynamic() is used when an AnyPointer's get() accessor is passed arguments, because for
// non-dynamic types PointerHelpers::get() takes a default value as the third argument, and we
// don't want people to accidentally be able to provide their own default value.
static DynamicList::Reader getDynamic(PointerReader reader, ListSchema schema);
static DynamicList::Builder getDynamic(PointerBuilder builder, ListSchema schema);
static void set(PointerBuilder builder, const DynamicList::Reader& value);
static DynamicList::Builder init(PointerBuilder builder, ListSchema schema, uint size);
static inline void adopt(PointerBuilder builder, Orphan<DynamicList>&& value) {
builder.adopt(kj::mv(value.builder));
}
static inline Orphan<DynamicList> disown(PointerBuilder builder, ListSchema schema) {
return Orphan<DynamicList>(schema, builder.disown());
}
};
template <>
struct PointerHelpers<DynamicCapability, Kind::OTHER> {
// getDynamic() is used when an AnyPointer's get() accessor is passed arguments, because for
// non-dynamic types PointerHelpers::get() takes a default value as the third argument, and we
// don't want people to accidentally be able to provide their own default value.
static DynamicCapability::Client getDynamic(PointerReader reader, InterfaceSchema schema);
static DynamicCapability::Client getDynamic(PointerBuilder builder, InterfaceSchema schema);
static void set(PointerBuilder builder, DynamicCapability::Client& value);
static void set(PointerBuilder builder, DynamicCapability::Client&& value);
static inline void adopt(PointerBuilder builder, Orphan<DynamicCapability>&& value) {
builder.adopt(kj::mv(value.builder));
}
static inline Orphan<DynamicCapability> disown(PointerBuilder builder, InterfaceSchema schema) {
return Orphan<DynamicCapability>(schema, builder.disown());
}
};
} // namespace _ (private)
template <typename T>
inline ReaderFor<T> AnyPointer::Reader::getAs(StructSchema schema) const {
return _::PointerHelpers<T>::getDynamic(reader, schema);
}
template <typename T>
inline ReaderFor<T> AnyPointer::Reader::getAs(ListSchema schema) const {
return _::PointerHelpers<T>::getDynamic(reader, schema);
}
template <typename T>
inline ReaderFor<T> AnyPointer::Reader::getAs(InterfaceSchema schema) const {
return _::PointerHelpers<T>::getDynamic(reader, schema);
}
template <typename T>
inline BuilderFor<T> AnyPointer::Builder::getAs(StructSchema schema) {
return _::PointerHelpers<T>::getDynamic(builder, schema);
}
template <typename T>
inline BuilderFor<T> AnyPointer::Builder::getAs(ListSchema schema) {
return _::PointerHelpers<T>::getDynamic(builder, schema);
}
template <typename T>
inline BuilderFor<T> AnyPointer::Builder::getAs(InterfaceSchema schema) {
return _::PointerHelpers<T>::getDynamic(builder, schema);
}
template <typename T>
inline BuilderFor<T> AnyPointer::Builder::initAs(StructSchema schema) {
return _::PointerHelpers<T>::init(builder, schema);
}
template <typename T>
inline BuilderFor<T> AnyPointer::Builder::initAs(ListSchema schema, uint elementCount) {
return _::PointerHelpers<T>::init(builder, schema, elementCount);
}
template <>
inline void AnyPointer::Builder::setAs<DynamicStruct>(DynamicStruct::Reader value) {
return _::PointerHelpers<DynamicStruct>::set(builder, value);
}
template <>
inline void AnyPointer::Builder::setAs<DynamicList>(DynamicList::Reader value) {
return _::PointerHelpers<DynamicList>::set(builder, value);
}
template <>
inline void AnyPointer::Builder::setAs<DynamicCapability>(DynamicCapability::Client value) {
return _::PointerHelpers<DynamicCapability>::set(builder, kj::mv(value));
}
template <>
void AnyPointer::Builder::adopt<DynamicValue>(Orphan<DynamicValue>&& orphan);
template <typename T>
inline Orphan<T> AnyPointer::Builder::disownAs(StructSchema schema) {
return _::PointerHelpers<T>::disown(builder, schema);
}
template <typename T>
inline Orphan<T> AnyPointer::Builder::disownAs(ListSchema schema) {
return _::PointerHelpers<T>::disown(builder, schema);
}
template <typename T>
inline Orphan<T> AnyPointer::Builder::disownAs(InterfaceSchema schema) {
return _::PointerHelpers<T>::disown(builder, schema);
}
// We have to declare the methods below inline because Clang and GCC disagree about how to mangle
// their symbol names.
template <>
inline DynamicStruct::Builder Orphan<AnyPointer>::getAs<DynamicStruct>(StructSchema schema) {
return DynamicStruct::Builder(schema, builder);
}
template <>
inline DynamicStruct::Reader Orphan<AnyPointer>::getAsReader<DynamicStruct>(
StructSchema schema) const {
return DynamicStruct::Reader(schema, builder);
}
template <>
inline Orphan<DynamicStruct> Orphan<AnyPointer>::releaseAs<DynamicStruct>(StructSchema schema) {
return Orphan<DynamicStruct>(schema, kj::mv(builder));
}
template <>
inline DynamicList::Builder Orphan<AnyPointer>::getAs<DynamicList>(ListSchema schema) {
return DynamicList::Builder(schema, builder);
}
template <>
inline DynamicList::Reader Orphan<AnyPointer>::getAsReader<DynamicList>(ListSchema schema) const {
return DynamicList::Reader(schema, builder);
}
template <>
inline Orphan<DynamicList> Orphan<AnyPointer>::releaseAs<DynamicList>(ListSchema schema) {
return Orphan<DynamicList>(schema, kj::mv(builder));
}
template <>
inline DynamicCapability::Client Orphan<AnyPointer>::getAs<DynamicCapability>(
InterfaceSchema schema) {
return DynamicCapability::Client(schema, builder.asCapability());
}
template <>
inline DynamicCapability::Client Orphan<AnyPointer>::getAsReader<DynamicCapability>(
InterfaceSchema schema) const {
return DynamicCapability::Client(schema, builder.asCapability());
}
template <>
inline Orphan<DynamicCapability> Orphan<AnyPointer>::releaseAs<DynamicCapability>(
InterfaceSchema schema) {
return Orphan<DynamicCapability>(schema, kj::mv(builder));
}
// =======================================================================================
// Inline implementation details.
template <typename T>
struct ToDynamic_<T, Kind::STRUCT> {
static inline DynamicStruct::Reader apply(const typename T::Reader& value) {
return DynamicStruct::Reader(Schema::from<T>(), value._reader);
}
static inline DynamicStruct::Builder apply(typename T::Builder& value) {
return DynamicStruct::Builder(Schema::from<T>(), value._builder);
}
};
template <typename T>
struct ToDynamic_<T, Kind::LIST> {
static inline DynamicList::Reader apply(const typename T::Reader& value) {
return DynamicList::Reader(Schema::from<T>(), value.reader);
}
static inline DynamicList::Builder apply(typename T::Builder& value) {
return DynamicList::Builder(Schema::from<T>(), value.builder);
}
};
template <typename T>
struct ToDynamic_<T, Kind::INTERFACE> {
static inline DynamicCapability::Client apply(typename T::Client value) {
return DynamicCapability::Client(kj::mv(value));
}
static inline DynamicCapability::Client apply(typename T::Client&& value) {
return DynamicCapability::Client(kj::mv(value));
}
};
template <typename T>
ReaderFor<DynamicTypeFor<FromReader<T>>> toDynamic(T&& value) {
return ToDynamic_<FromReader<T>>::apply(value);
}
template <typename T>
BuilderFor<DynamicTypeFor<FromBuilder<T>>> toDynamic(T&& value) {
return ToDynamic_<FromBuilder<T>>::apply(value);
}
template <typename T>
DynamicTypeFor<TypeIfEnum<T>> toDynamic(T&& value) {
return DynamicEnum(Schema::from<kj::Decay<T>>(), static_cast<uint16_t>(value));
}
template <typename T>
typename DynamicTypeFor<FromServer<T>>::Client toDynamic(kj::Own<T>&& value) {
return typename FromServer<T>::Client(kj::mv(value));
}
inline DynamicValue::Reader::Reader(std::nullptr_t n): type(UNKNOWN) {}
inline DynamicValue::Builder::Builder(std::nullptr_t n): type(UNKNOWN) {}
#define CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(cppType, typeTag, fieldName) \
inline DynamicValue::Reader::Reader(cppType value) \
: type(typeTag), fieldName##Value(value) {} \
inline DynamicValue::Builder::Builder(cppType value) \
: type(typeTag), fieldName##Value(value) {} \
inline Orphan<DynamicValue>::Orphan(cppType value) \
: type(DynamicValue::typeTag), fieldName##Value(value) {}
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(Void, VOID, void);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(bool, BOOL, bool);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(char, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(signed char, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(short, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(int, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(long, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(long long, INT, int);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(unsigned char, UINT, uint);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(unsigned short, UINT, uint);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(unsigned int, UINT, uint);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(unsigned long, UINT, uint);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(unsigned long long, UINT, uint);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(float, FLOAT, float);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(double, FLOAT, float);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(DynamicEnum, ENUM, enum);
#undef CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR
#define CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(cppType, typeTag, fieldName) \
inline DynamicValue::Reader::Reader(const cppType::Reader& value) \
: type(typeTag), fieldName##Value(value) {} \
inline DynamicValue::Builder::Builder(cppType::Builder value) \
: type(typeTag), fieldName##Value(value) {}
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(Text, TEXT, text);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(Data, DATA, data);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(DynamicList, LIST, list);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(DynamicStruct, STRUCT, struct);
CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR(AnyPointer, ANY_POINTER, anyPointer);
#undef CAPNP_DECLARE_DYNAMIC_VALUE_CONSTRUCTOR
inline DynamicValue::Reader::Reader(DynamicCapability::Client& value)
: type(CAPABILITY), capabilityValue(value) {}
inline DynamicValue::Reader::Reader(DynamicCapability::Client&& value)
: type(CAPABILITY), capabilityValue(kj::mv(value)) {}
template <typename T, typename>
inline DynamicValue::Reader::Reader(kj::Own<T>&& value)
: type(CAPABILITY), capabilityValue(kj::mv(value)) {}
inline DynamicValue::Builder::Builder(DynamicCapability::Client& value)
: type(CAPABILITY), capabilityValue(value) {}
inline DynamicValue::Builder::Builder(DynamicCapability::Client&& value)
: type(CAPABILITY), capabilityValue(kj::mv(value)) {}
inline DynamicValue::Reader::Reader(const char* value): Reader(Text::Reader(value)) {}
#define CAPNP_DECLARE_TYPE(discrim, typeName) \
template <> \
struct DynamicValue::Reader::AsImpl<typeName> { \
static ReaderFor<typeName> apply(const Reader& reader); \
}; \
template <> \
struct DynamicValue::Builder::AsImpl<typeName> { \
static BuilderFor<typeName> apply(Builder& builder); \
};
//CAPNP_DECLARE_TYPE(VOID, Void)
CAPNP_DECLARE_TYPE(BOOL, bool)
CAPNP_DECLARE_TYPE(INT8, int8_t)
CAPNP_DECLARE_TYPE(INT16, int16_t)
CAPNP_DECLARE_TYPE(INT32, int32_t)
CAPNP_DECLARE_TYPE(INT64, int64_t)
CAPNP_DECLARE_TYPE(UINT8, uint8_t)
CAPNP_DECLARE_TYPE(UINT16, uint16_t)
CAPNP_DECLARE_TYPE(UINT32, uint32_t)
CAPNP_DECLARE_TYPE(UINT64, uint64_t)
CAPNP_DECLARE_TYPE(FLOAT32, float)
CAPNP_DECLARE_TYPE(FLOAT64, double)
CAPNP_DECLARE_TYPE(TEXT, Text)
CAPNP_DECLARE_TYPE(DATA, Data)
CAPNP_DECLARE_TYPE(LIST, DynamicList)
CAPNP_DECLARE_TYPE(STRUCT, DynamicStruct)
CAPNP_DECLARE_TYPE(INTERFACE, DynamicCapability)
CAPNP_DECLARE_TYPE(ENUM, DynamicEnum)
CAPNP_DECLARE_TYPE(ANY_POINTER, AnyPointer)
#undef CAPNP_DECLARE_TYPE
// CAPNP_DECLARE_TYPE(Void) causes gcc 4.7 to segfault. If I do it manually and remove the
// ReaderFor<> and BuilderFor<> wrappers, it works.
template <>
struct DynamicValue::Reader::AsImpl<Void> {
static Void apply(const Reader& reader);
};
template <>
struct DynamicValue::Builder::AsImpl<Void> {
static Void apply(Builder& builder);
};
template <typename T>
struct DynamicValue::Reader::AsImpl<T, Kind::ENUM> {
static T apply(const Reader& reader) {
return reader.as<DynamicEnum>().as<T>();
}
};
template <typename T>
struct DynamicValue::Builder::AsImpl<T, Kind::ENUM> {
static T apply(Builder& builder) {
return builder.as<DynamicEnum>().as<T>();
}
};
template <typename T>
struct DynamicValue::Reader::AsImpl<T, Kind::STRUCT> {
static typename T::Reader apply(const Reader& reader) {
return reader.as<DynamicStruct>().as<T>();
}
};
template <typename T>
struct DynamicValue::Builder::AsImpl<T, Kind::STRUCT> {
static typename T::Builder apply(Builder& builder) {
return builder.as<DynamicStruct>().as<T>();
}
};
template <typename T>
struct DynamicValue::Reader::AsImpl<T, Kind::LIST> {
static typename T::Reader apply(const Reader& reader) {
return reader.as<DynamicList>().as<T>();
}
};
template <typename T>
struct DynamicValue::Builder::AsImpl<T, Kind::LIST> {
static typename T::Builder apply(Builder& builder) {
return builder.as<DynamicList>().as<T>();
}
};
template <typename T>
struct DynamicValue::Reader::AsImpl<T, Kind::INTERFACE> {
static typename T::Client apply(const Reader& reader) {
return reader.as<DynamicCapability>().as<T>();
}
};
template <typename T>
struct DynamicValue::Builder::AsImpl<T, Kind::INTERFACE> {
static typename T::Client apply(Builder& builder) {
return builder.as<DynamicCapability>().as<T>();
}
};
template <>
struct DynamicValue::Reader::AsImpl<DynamicValue> {
static DynamicValue::Reader apply(const Reader& reader) {
return reader;
}
};
template <>
struct DynamicValue::Builder::AsImpl<DynamicValue> {
static DynamicValue::Builder apply(Builder& builder) {
return builder;
}
};
inline DynamicValue::Pipeline::Pipeline(std::nullptr_t n): type(UNKNOWN) {}
inline DynamicValue::Pipeline::Pipeline(DynamicStruct::Pipeline&& value)
: type(STRUCT), structValue(kj::mv(value)) {}
inline DynamicValue::Pipeline::Pipeline(DynamicCapability::Client&& value)
: type(CAPABILITY), capabilityValue(kj::mv(value)) {}
template <typename T>
struct DynamicValue::Pipeline::AsImpl<T, Kind::STRUCT> {
static typename T::Pipeline apply(Pipeline& pipeline) {
return pipeline.releaseAs<DynamicStruct>().releaseAs<T>();
}
};
template <typename T>
struct DynamicValue::Pipeline::AsImpl<T, Kind::INTERFACE> {
static typename T::Client apply(Pipeline& pipeline) {
return pipeline.releaseAs<DynamicCapability>().releaseAs<T>();
}
};
template <>
struct DynamicValue::Pipeline::AsImpl<DynamicStruct, Kind::OTHER> {
static PipelineFor<DynamicStruct> apply(Pipeline& pipeline);
};
template <>
struct DynamicValue::Pipeline::AsImpl<DynamicCapability, Kind::OTHER> {
static PipelineFor<DynamicCapability> apply(Pipeline& pipeline);
};
// -------------------------------------------------------------------
template <typename T>
typename T::Reader DynamicStruct::Reader::as() const {
static_assert(kind<T>() == Kind::STRUCT,
"DynamicStruct::Reader::as<T>() can only convert to struct types.");
schema.requireUsableAs<T>();
return typename T::Reader(reader);
}
template <typename T>
typename T::Builder DynamicStruct::Builder::as() {
static_assert(kind<T>() == Kind::STRUCT,
"DynamicStruct::Builder::as<T>() can only convert to struct types.");
schema.requireUsableAs<T>();
return typename T::Builder(builder);
}
template <>
inline DynamicStruct::Reader DynamicStruct::Reader::as<DynamicStruct>() const {
return *this;
}
template <>
inline DynamicStruct::Builder DynamicStruct::Builder::as<DynamicStruct>() {
return *this;
}
inline DynamicStruct::Reader DynamicStruct::Builder::asReader() const {
return DynamicStruct::Reader(schema, builder.asReader());
}
template <>
inline AnyStruct::Reader DynamicStruct::Reader::as<AnyStruct>() const {
return AnyStruct::Reader(reader);
}
template <>
inline AnyStruct::Builder DynamicStruct::Builder::as<AnyStruct>() {
return AnyStruct::Builder(builder);
}
template <typename T>
typename T::Pipeline DynamicStruct::Pipeline::releaseAs() {
static_assert(kind<T>() == Kind::STRUCT,
"DynamicStruct::Pipeline::releaseAs<T>() can only convert to struct types.");
schema.requireUsableAs<T>();
return typename T::Pipeline(kj::mv(typeless));
}
// -------------------------------------------------------------------
template <typename T>
typename T::Reader DynamicList::Reader::as() const {
static_assert(kind<T>() == Kind::LIST,
"DynamicStruct::Reader::as<T>() can only convert to list types.");
schema.requireUsableAs<T>();
return typename T::Reader(reader);
}
template <typename T>
typename T::Builder DynamicList::Builder::as() {
static_assert(kind<T>() == Kind::LIST,
"DynamicStruct::Builder::as<T>() can only convert to list types.");
schema.requireUsableAs<T>();
return typename T::Builder(builder);
}
template <>
inline DynamicList::Reader DynamicList::Reader::as<DynamicList>() const {
return *this;
}
template <>
inline DynamicList::Builder DynamicList::Builder::as<DynamicList>() {
return *this;
}
template <>
inline AnyList::Reader DynamicList::Reader::as<AnyList>() const {
return AnyList::Reader(reader);
}
template <>
inline AnyList::Builder DynamicList::Builder::as<AnyList>() {
return AnyList::Builder(builder);
}
// -------------------------------------------------------------------
template <typename T, typename>
inline DynamicCapability::Client::Client(T&& client)
: Capability::Client(kj::mv(client)), schema(Schema::from<FromClient<T>>()) {}
template <typename T, typename>
inline DynamicCapability::Client::Client(kj::Own<T>&& server)
: Client(server->getSchema(), kj::mv(server)) {}
template <typename T>
inline DynamicCapability::Client::Client(InterfaceSchema schema, kj::Own<T>&& server)
: Capability::Client(kj::mv(server)), schema(schema) {}
template <typename T, typename>
typename T::Client DynamicCapability::Client::as() {
static_assert(kind<T>() == Kind::INTERFACE,
"DynamicCapability::Client::as<T>() can only convert to interface types.");
schema.requireUsableAs<T>();
return typename T::Client(hook->addRef());
}
template <typename T, typename>
typename T::Client DynamicCapability::Client::releaseAs() {
static_assert(kind<T>() == Kind::INTERFACE,
"DynamicCapability::Client::as<T>() can only convert to interface types.");
schema.requireUsableAs<T>();
return typename T::Client(kj::mv(hook));
}
inline CallContext<DynamicStruct, DynamicStruct>::CallContext(
CallContextHook& hook, StructSchema paramType, StructSchema resultType)
: hook(&hook), paramType(paramType), resultType(resultType) {}
inline DynamicStruct::Reader CallContext<DynamicStruct, DynamicStruct>::getParams() {
return hook->getParams().getAs<DynamicStruct>(paramType);
}
inline void CallContext<DynamicStruct, DynamicStruct>::releaseParams() {
hook->releaseParams();
}
inline DynamicStruct::Builder CallContext<DynamicStruct, DynamicStruct>::getResults(
kj::Maybe<MessageSize> sizeHint) {
return hook->getResults(sizeHint).getAs<DynamicStruct>(resultType);
}
inline DynamicStruct::Builder CallContext<DynamicStruct, DynamicStruct>::initResults(
kj::Maybe<MessageSize> sizeHint) {
return hook->getResults(sizeHint).initAs<DynamicStruct>(resultType);
}
inline void CallContext<DynamicStruct, DynamicStruct>::setResults(DynamicStruct::Reader value) {
hook->getResults(value.totalSize()).setAs<DynamicStruct>(value);
}
inline void CallContext<DynamicStruct, DynamicStruct>::adoptResults(Orphan<DynamicStruct>&& value) {
hook->getResults(MessageSize { 0, 0 }).adopt(kj::mv(value));
}
inline Orphanage CallContext<DynamicStruct, DynamicStruct>::getResultsOrphanage(
kj::Maybe<MessageSize> sizeHint) {
return Orphanage::getForMessageContaining(hook->getResults(sizeHint));
}
template <typename SubParams>
inline kj::Promise<void> CallContext<DynamicStruct, DynamicStruct>::tailCall(
Request<SubParams, DynamicStruct>&& tailRequest) {
return hook->tailCall(kj::mv(tailRequest.hook));
}
inline void CallContext<DynamicStruct, DynamicStruct>::allowCancellation() {
hook->allowCancellation();
}
template <>
inline DynamicCapability::Client Capability::Client::castAs<DynamicCapability>(
InterfaceSchema schema) {
return DynamicCapability::Client(schema, hook->addRef());
}
// -------------------------------------------------------------------
template <typename T>
ReaderFor<T> ConstSchema::as() const {
return DynamicValue::Reader(*this).as<T>();
}
} // namespace capnp
#endif // CAPNP_DYNAMIC_H_