Mercurial > hg > sv-dependency-builds
diff win64-msvc/include/capnp/serialize-text.h @ 47:d93140aac40b
Current Capnp libs and headers from git
author | Chris Cannam |
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date | Thu, 20 Oct 2016 18:15:38 +0100 |
parents | |
children | 0f2d93caa50c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/win64-msvc/include/capnp/serialize-text.h Thu Oct 20 18:15:38 2016 +0100 @@ -0,0 +1,96 @@ +// Copyright (c) 2015 Philip Quinn. +// 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. + +#ifndef CAPNP_SERIALIZE_TEXT_H_ +#define CAPNP_SERIALIZE_TEXT_H_ + +#if defined(__GNUC__) && !defined(CAPNP_HEADER_WARNINGS) +#pragma GCC system_header +#endif + +#include <kj/string.h> +#include "dynamic.h" +#include "orphan.h" +#include "schema.h" + +namespace capnp { + +class TextCodec { + // Reads and writes Cap'n Proto objects in a plain text format (as used in the schema + // language for constants, and read/written by the 'decode' and 'encode' commands of + // the capnp tool). + // + // This format is useful for debugging or human input, but it is not a robust alternative + // to the binary format. Changes to a schema's types or names that are permitted in a + // schema's binary evolution will likely break messages stored in this format. + // + // Note that definitions or references (to constants, other fields, or files) are not + // permitted in this format. To evaluate declarations with the full expressiveness of the + // schema language, see `capnp::SchemaParser`. + // + // Requires linking with the capnpc library. + +public: + TextCodec(); + ~TextCodec() noexcept(true); + + void setPrettyPrint(bool enabled); + // If enabled, pads the output of `encode()` with spaces and newlines to make it more + // human-readable. + + template <typename T> + kj::String encode(T&& value) const; + kj::String encode(DynamicValue::Reader value) const; + // Encode any Cap'n Proto value. + + template <typename T> + Orphan<T> decode(kj::StringPtr input, Orphanage orphanage) const; + // Decode a text message into a Cap'n Proto object of type T, allocated in the given + // orphanage. Any errors parsing the input or assigning the fields of T are thrown as + // exceptions. + + void decode(kj::StringPtr input, DynamicStruct::Builder output) const; + // Decode a text message for a struct into the given builder. Any errors parsing the + // input or assigning the fields of the output are thrown as exceptions. + + // TODO(someday): expose some control over the error handling? +private: + Orphan<DynamicValue> decode(kj::StringPtr input, Type type, Orphanage orphanage) const; + + bool prettyPrint; +}; + +// ======================================================================================= +// inline stuff + +template <typename T> +inline kj::String TextCodec::encode(T&& value) const { + return encode(DynamicValue::Reader(ReaderFor<FromAny<T>>(kj::fwd<T>(value)))); +} + +template <typename T> +inline Orphan<T> TextCodec::decode(kj::StringPtr input, Orphanage orphanage) const { + return decode(input, Type::from<T>(), orphanage).template releaseAs<T>(); +} + +} // namespace capnp + +#endif // CAPNP_SERIALIZE_TEXT_H_