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1643 lines
59 KiB
1643 lines
59 KiB
// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
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// Licensed under the MIT License:
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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// This file defines classes that can be used to manipulate messages based on schemas that are not
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// known until runtime. This is also useful for writing generic code that uses schemas to handle
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// arbitrary types in a generic way.
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//
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// Each of the classes defined here has a to() template method which converts an instance back to a
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// native type. This method will throw an exception if the requested type does not match the
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// schema. To convert native types to dynamic, use DynamicFactory.
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//
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// As always, underlying data is validated lazily, so you have to actually traverse the whole
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// message if you want to validate all content.
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#ifndef CAPNP_DYNAMIC_H_
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#define CAPNP_DYNAMIC_H_
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#if defined(__GNUC__) && !defined(CAPNP_HEADER_WARNINGS)
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#pragma GCC system_header
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#endif
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#include "schema.h"
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#include "layout.h"
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#include "message.h"
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#include "any.h"
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#include "capability.h"
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namespace capnp {
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class MessageReader;
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class MessageBuilder;
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struct DynamicValue {
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DynamicValue() = delete;
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enum Type {
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UNKNOWN,
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// Means that the value has unknown type and content because it comes from a newer version of
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// the schema, or from a newer version of Cap'n Proto that has new features that this version
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// doesn't understand.
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VOID,
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BOOL,
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INT,
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UINT,
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FLOAT,
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TEXT,
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DATA,
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LIST,
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ENUM,
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STRUCT,
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CAPABILITY,
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ANY_POINTER
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};
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class Reader;
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class Builder;
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class Pipeline;
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};
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class DynamicEnum;
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struct DynamicStruct {
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DynamicStruct() = delete;
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class Reader;
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class Builder;
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class Pipeline;
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};
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struct DynamicList {
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DynamicList() = delete;
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class Reader;
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class Builder;
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};
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struct DynamicCapability {
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DynamicCapability() = delete;
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class Client;
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class Server;
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};
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template <> class Orphan<DynamicValue>;
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template <Kind k> struct DynamicTypeFor_;
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template <> struct DynamicTypeFor_<Kind::ENUM> { typedef DynamicEnum Type; };
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template <> struct DynamicTypeFor_<Kind::STRUCT> { typedef DynamicStruct Type; };
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template <> struct DynamicTypeFor_<Kind::LIST> { typedef DynamicList Type; };
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template <> struct DynamicTypeFor_<Kind::INTERFACE> { typedef DynamicCapability Type; };
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template <typename T>
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using DynamicTypeFor = typename DynamicTypeFor_<kind<T>()>::Type;
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template <typename T>
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ReaderFor<DynamicTypeFor<FromReader<T>>> toDynamic(T&& value);
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template <typename T>
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BuilderFor<DynamicTypeFor<FromBuilder<T>>> toDynamic(T&& value);
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template <typename T>
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DynamicTypeFor<TypeIfEnum<T>> toDynamic(T&& value);
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template <typename T>
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typename DynamicTypeFor<FromServer<T>>::Client toDynamic(kj::Own<T>&& value);
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namespace _ { // private
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template <> struct Kind_<DynamicValue > { static constexpr Kind kind = Kind::OTHER; };
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template <> struct Kind_<DynamicEnum > { static constexpr Kind kind = Kind::OTHER; };
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template <> struct Kind_<DynamicStruct > { static constexpr Kind kind = Kind::OTHER; };
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template <> struct Kind_<DynamicList > { static constexpr Kind kind = Kind::OTHER; };
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template <> struct Kind_<DynamicCapability> { static constexpr Kind kind = Kind::OTHER; };
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} // namespace _ (private)
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template <> inline constexpr Style style<DynamicValue >() { return Style::POINTER; }
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template <> inline constexpr Style style<DynamicEnum >() { return Style::PRIMITIVE; }
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template <> inline constexpr Style style<DynamicStruct >() { return Style::STRUCT; }
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template <> inline constexpr Style style<DynamicList >() { return Style::POINTER; }
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template <> inline constexpr Style style<DynamicCapability>() { return Style::CAPABILITY; }
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// -------------------------------------------------------------------
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class DynamicEnum {
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public:
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DynamicEnum() = default;
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inline DynamicEnum(EnumSchema::Enumerant enumerant)
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: schema(enumerant.getContainingEnum()), value(enumerant.getOrdinal()) {}
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inline DynamicEnum(EnumSchema schema, uint16_t value)
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: schema(schema), value(value) {}
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template <typename T, typename = kj::EnableIf<kind<T>() == Kind::ENUM>>
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inline DynamicEnum(T&& value): DynamicEnum(toDynamic(value)) {}
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template <typename T>
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inline T as() const { return static_cast<T>(asImpl(typeId<T>())); }
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// Cast to a native enum type.
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inline EnumSchema getSchema() const { return schema; }
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kj::Maybe<EnumSchema::Enumerant> getEnumerant() const;
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// Get which enumerant this enum value represents. Returns nullptr if the numeric value does not
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// correspond to any enumerant in the schema -- this can happen if the data was built using a
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// newer schema that has more values defined.
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inline uint16_t getRaw() const { return value; }
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// Returns the raw underlying enum value.
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private:
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EnumSchema schema;
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uint16_t value;
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uint16_t asImpl(uint64_t requestedTypeId) const;
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friend struct DynamicStruct;
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friend struct DynamicList;
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friend struct DynamicValue;
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template <typename T>
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friend DynamicTypeFor<TypeIfEnum<T>> toDynamic(T&& value);
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};
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// -------------------------------------------------------------------
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class DynamicStruct::Reader {
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public:
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typedef DynamicStruct Reads;
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Reader() = default;
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template <typename T, typename = kj::EnableIf<kind<FromReader<T>>() == Kind::STRUCT>>
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inline Reader(T&& value): Reader(toDynamic(value)) {}
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inline MessageSize totalSize() const { return reader.totalSize().asPublic(); }
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template <typename T>
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typename T::Reader as() const;
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// Convert the dynamic struct to its compiled-in type.
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inline StructSchema getSchema() const { return schema; }
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DynamicValue::Reader get(StructSchema::Field field) const;
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// Read the given field value.
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bool has(StructSchema::Field field) const;
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// Tests whether the given field is set to its default value. For pointer values, this does
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// not actually traverse the value comparing it with the default, but simply returns true if the
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// pointer is non-null. For members of unions, has() returns false if the union member is not
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// active, but does not necessarily return true if the member is active (depends on the field's
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// value).
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kj::Maybe<StructSchema::Field> which() const;
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// If the struct contains an (unnamed) union, and the currently-active field within that union
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// is known, this returns that field. Otherwise, it returns null. In other words, this returns
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// null if there is no union present _or_ if the union's discriminant is set to an unrecognized
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// value. This could happen in particular when receiving a message from a sender who has a
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// newer version of the protocol and is using a field of the union that you don't know about yet.
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DynamicValue::Reader get(kj::StringPtr name) const;
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bool has(kj::StringPtr name) const;
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// Shortcuts to access fields by name. These throw exceptions if no such field exists.
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private:
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StructSchema schema;
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_::StructReader reader;
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inline Reader(StructSchema schema, _::StructReader reader)
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: schema(schema), reader(reader) {}
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Reader(StructSchema schema, const _::OrphanBuilder& orphan);
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bool isSetInUnion(StructSchema::Field field) const;
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void verifySetInUnion(StructSchema::Field field) const;
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static DynamicValue::Reader getImpl(_::StructReader reader, StructSchema::Field field);
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template <typename T, Kind K>
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friend struct _::PointerHelpers;
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friend class DynamicStruct::Builder;
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friend struct DynamicList;
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friend class MessageReader;
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friend class MessageBuilder;
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template <typename T, ::capnp::Kind k>
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friend struct ::capnp::ToDynamic_;
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friend kj::StringTree _::structString(
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_::StructReader reader, const _::RawBrandedSchema& schema);
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friend class Orphanage;
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friend class Orphan<DynamicStruct>;
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friend class Orphan<DynamicValue>;
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friend class Orphan<AnyPointer>;
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};
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class DynamicStruct::Builder {
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public:
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typedef DynamicStruct Builds;
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Builder() = default;
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inline Builder(decltype(nullptr)) {}
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template <typename T, typename = kj::EnableIf<kind<FromBuilder<T>>() == Kind::STRUCT>>
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inline Builder(T&& value): Builder(toDynamic(value)) {}
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inline MessageSize totalSize() const { return asReader().totalSize(); }
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template <typename T>
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typename T::Builder as();
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// Cast to a particular struct type.
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inline StructSchema getSchema() const { return schema; }
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DynamicValue::Builder get(StructSchema::Field field);
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// Read the given field value.
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inline bool has(StructSchema::Field field) { return asReader().has(field); }
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// Tests whether the given field is set to its default value. For pointer values, this does
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// not actually traverse the value comparing it with the default, but simply returns true if the
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// pointer is non-null. For members of unions, has() returns whether the field is currently
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// active and the union as a whole is non-default -- so, the only time has() will return false
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// for an active union field is if it is the default active field and it has its default value.
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kj::Maybe<StructSchema::Field> which();
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// If the struct contains an (unnamed) union, and the currently-active field within that union
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// is known, this returns that field. Otherwise, it returns null. In other words, this returns
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// null if there is no union present _or_ if the union's discriminant is set to an unrecognized
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// value. This could happen in particular when receiving a message from a sender who has a
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// newer version of the protocol and is using a field of the union that you don't know about yet.
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void set(StructSchema::Field field, const DynamicValue::Reader& value);
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// Set the given field value.
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DynamicValue::Builder init(StructSchema::Field field);
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DynamicValue::Builder init(StructSchema::Field field, uint size);
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// Init a struct, list, or blob field.
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void adopt(StructSchema::Field field, Orphan<DynamicValue>&& orphan);
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Orphan<DynamicValue> disown(StructSchema::Field field);
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// Adopt/disown. This works even for non-pointer fields: adopt() becomes equivalent to set()
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// and disown() becomes like get() followed by clear().
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void clear(StructSchema::Field field);
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// Clear a field, setting it to its default value. For pointer fields, this actually makes the
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// field null.
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DynamicValue::Builder get(kj::StringPtr name);
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bool has(kj::StringPtr name);
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void set(kj::StringPtr name, const DynamicValue::Reader& value);
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void set(kj::StringPtr name, std::initializer_list<DynamicValue::Reader> value);
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DynamicValue::Builder init(kj::StringPtr name);
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DynamicValue::Builder init(kj::StringPtr name, uint size);
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void adopt(kj::StringPtr name, Orphan<DynamicValue>&& orphan);
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Orphan<DynamicValue> disown(kj::StringPtr name);
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void clear(kj::StringPtr name);
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// Shortcuts to access fields by name. These throw exceptions if no such field exists.
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Reader asReader() const;
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private:
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StructSchema schema;
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_::StructBuilder builder;
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inline Builder(StructSchema schema, _::StructBuilder builder)
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: schema(schema), builder(builder) {}
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Builder(StructSchema schema, _::OrphanBuilder& orphan);
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bool isSetInUnion(StructSchema::Field field);
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void verifySetInUnion(StructSchema::Field field);
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void setInUnion(StructSchema::Field field);
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template <typename T, Kind k>
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friend struct _::PointerHelpers;
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friend struct DynamicList;
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friend class MessageReader;
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friend class MessageBuilder;
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template <typename T, ::capnp::Kind k>
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friend struct ::capnp::ToDynamic_;
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friend class Orphanage;
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friend class Orphan<DynamicStruct>;
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friend class Orphan<DynamicValue>;
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friend class Orphan<AnyPointer>;
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};
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class DynamicStruct::Pipeline {
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public:
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typedef DynamicStruct Pipelines;
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inline Pipeline(decltype(nullptr)): typeless(nullptr) {}
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template <typename T>
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typename T::Pipeline releaseAs();
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// Convert the dynamic pipeline to its compiled-in type.
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inline StructSchema getSchema() { return schema; }
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DynamicValue::Pipeline get(StructSchema::Field field);
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// Read the given field value.
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DynamicValue::Pipeline get(kj::StringPtr name);
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// Get by string name.
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private:
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StructSchema schema;
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AnyPointer::Pipeline typeless;
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inline explicit Pipeline(StructSchema schema, AnyPointer::Pipeline&& typeless)
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: schema(schema), typeless(kj::mv(typeless)) {}
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friend class Request<DynamicStruct, DynamicStruct>;
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};
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// -------------------------------------------------------------------
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class DynamicList::Reader {
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public:
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typedef DynamicList Reads;
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inline Reader(): reader(ElementSize::VOID) {}
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template <typename T, typename = kj::EnableIf<kind<FromReader<T>>() == Kind::LIST>>
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inline Reader(T&& value): Reader(toDynamic(value)) {}
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template <typename T>
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typename T::Reader as() const;
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// Try to convert to any List<T>, Data, or Text. Throws an exception if the underlying data
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// can't possibly represent the requested type.
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inline ListSchema getSchema() const { return schema; }
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inline uint size() const { return unbound(reader.size() / ELEMENTS); }
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DynamicValue::Reader operator[](uint index) const;
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typedef _::IndexingIterator<const Reader, DynamicValue::Reader> Iterator;
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inline Iterator begin() const { return Iterator(this, 0); }
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inline Iterator end() const { return Iterator(this, size()); }
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private:
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ListSchema schema;
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_::ListReader reader;
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Reader(ListSchema schema, _::ListReader reader): schema(schema), reader(reader) {}
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Reader(ListSchema schema, const _::OrphanBuilder& orphan);
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template <typename T, Kind k>
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friend struct _::PointerHelpers;
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friend struct DynamicStruct;
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friend class DynamicList::Builder;
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template <typename T, ::capnp::Kind k>
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friend struct ::capnp::ToDynamic_;
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friend class Orphanage;
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friend class Orphan<DynamicList>;
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friend class Orphan<DynamicValue>;
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friend class Orphan<AnyPointer>;
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};
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class DynamicList::Builder {
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public:
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typedef DynamicList Builds;
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inline Builder(): builder(ElementSize::VOID) {}
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inline Builder(decltype(nullptr)): builder(ElementSize::VOID) {}
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template <typename T, typename = kj::EnableIf<kind<FromBuilder<T>>() == Kind::LIST>>
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inline Builder(T&& value): Builder(toDynamic(value)) {}
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template <typename T>
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typename T::Builder as();
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// Try to convert to any List<T>, Data, or Text. Throws an exception if the underlying data
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// can't possibly represent the requested type.
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inline ListSchema getSchema() const { return schema; }
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inline uint size() const { return unbound(builder.size() / ELEMENTS); }
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DynamicValue::Builder operator[](uint index);
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void set(uint index, const DynamicValue::Reader& value);
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DynamicValue::Builder init(uint index, uint size);
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void adopt(uint index, Orphan<DynamicValue>&& orphan);
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Orphan<DynamicValue> disown(uint index);
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typedef _::IndexingIterator<Builder, DynamicStruct::Builder> Iterator;
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inline Iterator begin() { return Iterator(this, 0); }
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inline Iterator end() { return Iterator(this, size()); }
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void copyFrom(std::initializer_list<DynamicValue::Reader> value);
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Reader asReader() const;
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private:
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ListSchema schema;
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_::ListBuilder builder;
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Builder(ListSchema schema, _::ListBuilder builder): schema(schema), builder(builder) {}
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Builder(ListSchema schema, _::OrphanBuilder& orphan);
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template <typename T, Kind k>
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friend struct _::PointerHelpers;
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friend struct DynamicStruct;
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template <typename T, ::capnp::Kind k>
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friend struct ::capnp::ToDynamic_;
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friend class Orphanage;
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template <typename T, Kind k>
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friend struct _::OrphanGetImpl;
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friend class Orphan<DynamicList>;
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friend class Orphan<DynamicValue>;
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friend class Orphan<AnyPointer>;
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};
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// -------------------------------------------------------------------
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class DynamicCapability::Client: public Capability::Client {
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public:
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typedef DynamicCapability Calls;
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typedef DynamicCapability Reads;
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Client() = default;
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template <typename T, typename = kj::EnableIf<kind<FromClient<T>>() == Kind::INTERFACE>>
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inline Client(T&& client);
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template <typename T, typename = kj::EnableIf<kj::canConvert<T*, DynamicCapability::Server*>()>>
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inline Client(kj::Own<T>&& server);
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template <typename T, typename = kj::EnableIf<kind<T>() == Kind::INTERFACE>>
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typename T::Client as();
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template <typename T, typename = kj::EnableIf<kind<T>() == Kind::INTERFACE>>
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typename T::Client releaseAs();
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// Convert to any client type.
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Client upcast(InterfaceSchema requestedSchema);
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// Upcast to a superclass. Throws an exception if `schema` is not a superclass.
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inline InterfaceSchema getSchema() { return schema; }
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Request<DynamicStruct, DynamicStruct> newRequest(
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InterfaceSchema::Method method, kj::Maybe<MessageSize> sizeHint = nullptr);
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Request<DynamicStruct, DynamicStruct> newRequest(
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kj::StringPtr methodName, kj::Maybe<MessageSize> sizeHint = nullptr);
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private:
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InterfaceSchema schema;
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Client(InterfaceSchema schema, kj::Own<ClientHook>&& hook)
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: Capability::Client(kj::mv(hook)), schema(schema) {}
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template <typename T>
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inline Client(InterfaceSchema schema, kj::Own<T>&& server);
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friend struct Capability;
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friend struct DynamicStruct;
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friend struct DynamicList;
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friend struct DynamicValue;
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friend class Orphan<DynamicCapability>;
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friend class Orphan<DynamicValue>;
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friend class Orphan<AnyPointer>;
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template <typename T, Kind k>
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friend struct _::PointerHelpers;
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};
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class DynamicCapability::Server: public Capability::Server {
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public:
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typedef DynamicCapability Serves;
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Server(InterfaceSchema schema): schema(schema) {}
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virtual kj::Promise<void> call(InterfaceSchema::Method method,
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CallContext<DynamicStruct, DynamicStruct> context) = 0;
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|
|
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_
|
|
|