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Bumpt flatbuffers to v24.3.25 version

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This commit is contained in:
Siarhei Fedartsou
2024-06-22 13:33:14 +02:00
parent e8da3d9231
commit b223785c4d
604 changed files with 4 additions and 126050 deletions
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third_party/flatbuffers/include/flatbuffers/base.h
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#ifndef FLATBUFFERS_BASE_H_
#define FLATBUFFERS_BASE_H_
// clang-format off
// If activate should be declared and included first.
#if defined(FLATBUFFERS_MEMORY_LEAK_TRACKING) && \
defined(_MSC_VER) && defined(_DEBUG)
// The _CRTDBG_MAP_ALLOC inside <crtdbg.h> will replace
// calloc/free (etc) to its debug version using #define directives.
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
// Replace operator new by trace-enabled version.
#define DEBUG_NEW new(_NORMAL_BLOCK, __FILE__, __LINE__)
#define new DEBUG_NEW
#endif
#if !defined(FLATBUFFERS_ASSERT)
#include <assert.h>
#define FLATBUFFERS_ASSERT assert
#elif defined(FLATBUFFERS_ASSERT_INCLUDE)
// Include file with forward declaration
#include FLATBUFFERS_ASSERT_INCLUDE
#endif
#ifndef ARDUINO
#include <cstdint>
#endif
#include <cstddef>
#include <cstdlib>
#include <cstring>
#if defined(ARDUINO) && !defined(ARDUINOSTL_M_H)
#include <utility.h>
#else
#include <utility>
#endif
#include <string>
#include <type_traits>
#include <vector>
#include <set>
#include <algorithm>
#include <iterator>
#include <memory>
#ifdef _STLPORT_VERSION
#define FLATBUFFERS_CPP98_STL
#endif
#ifndef FLATBUFFERS_CPP98_STL
#include <functional>
#endif
#include "flatbuffers/stl_emulation.h"
#if defined(__ICCARM__)
#include <intrinsics.h>
#endif
// Note the __clang__ check is needed, because clang presents itself
// as an older GNUC compiler (4.2).
// Clang 3.3 and later implement all of the ISO C++ 2011 standard.
// Clang 3.4 and later implement all of the ISO C++ 2014 standard.
// http://clang.llvm.org/cxx_status.html
// Note the MSVC value '__cplusplus' may be incorrect:
// The '__cplusplus' predefined macro in the MSVC stuck at the value 199711L,
// indicating (erroneously!) that the compiler conformed to the C++98 Standard.
// This value should be correct starting from MSVC2017-15.7-Preview-3.
// The '__cplusplus' will be valid only if MSVC2017-15.7-P3 and the `/Zc:__cplusplus` switch is set.
// Workaround (for details see MSDN):
// Use the _MSC_VER and _MSVC_LANG definition instead of the __cplusplus for compatibility.
// The _MSVC_LANG macro reports the Standard version regardless of the '/Zc:__cplusplus' switch.
#if defined(__GNUC__) && !defined(__clang__)
#define FLATBUFFERS_GCC (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#else
#define FLATBUFFERS_GCC 0
#endif
#if defined(__clang__)
#define FLATBUFFERS_CLANG (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#else
#define FLATBUFFERS_CLANG 0
#endif
/// @cond FLATBUFFERS_INTERNAL
#if __cplusplus <= 199711L && \
(!defined(_MSC_VER) || _MSC_VER < 1600) && \
(!defined(__GNUC__) || \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 40400))
#error A C++11 compatible compiler with support for the auto typing is \
required for FlatBuffers.
#error __cplusplus _MSC_VER __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
#endif
#if !defined(__clang__) && \
defined(__GNUC__) && \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 40600)
// Backwards compatability for g++ 4.4, and 4.5 which don't have the nullptr
// and constexpr keywords. Note the __clang__ check is needed, because clang
// presents itself as an older GNUC compiler.
#ifndef nullptr_t
const class nullptr_t {
public:
template<class T> inline operator T*() const { return 0; }
private:
void operator&() const;
} nullptr = {};
#endif
#ifndef constexpr
#define constexpr const
#endif
#endif
// The wire format uses a little endian encoding (since that's efficient for
// the common platforms).
#if defined(__s390x__)
#define FLATBUFFERS_LITTLEENDIAN 0
#endif // __s390x__
#if !defined(FLATBUFFERS_LITTLEENDIAN)
#if defined(__GNUC__) || defined(__clang__) || defined(__ICCARM__)
#if (defined(__BIG_ENDIAN__) || \
(defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
#define FLATBUFFERS_LITTLEENDIAN 0
#else
#define FLATBUFFERS_LITTLEENDIAN 1
#endif // __BIG_ENDIAN__
#elif defined(_MSC_VER)
#if defined(_M_PPC)
#define FLATBUFFERS_LITTLEENDIAN 0
#else
#define FLATBUFFERS_LITTLEENDIAN 1
#endif
#else
#error Unable to determine endianness, define FLATBUFFERS_LITTLEENDIAN.
#endif
#endif // !defined(FLATBUFFERS_LITTLEENDIAN)
#define FLATBUFFERS_VERSION_MAJOR 1
#define FLATBUFFERS_VERSION_MINOR 11
#define FLATBUFFERS_VERSION_REVISION 0
#define FLATBUFFERS_STRING_EXPAND(X) #X
#define FLATBUFFERS_STRING(X) FLATBUFFERS_STRING_EXPAND(X)
namespace flatbuffers {
// Returns version as string "MAJOR.MINOR.REVISION".
const char* FLATBUFFERS_VERSION();
}
#if (!defined(_MSC_VER) || _MSC_VER > 1600) && \
(!defined(__GNUC__) || (__GNUC__ * 100 + __GNUC_MINOR__ >= 407)) || \
defined(__clang__)
#define FLATBUFFERS_FINAL_CLASS final
#define FLATBUFFERS_OVERRIDE override
#define FLATBUFFERS_VTABLE_UNDERLYING_TYPE : flatbuffers::voffset_t
#else
#define FLATBUFFERS_FINAL_CLASS
#define FLATBUFFERS_OVERRIDE
#define FLATBUFFERS_VTABLE_UNDERLYING_TYPE
#endif
#if (!defined(_MSC_VER) || _MSC_VER >= 1900) && \
(!defined(__GNUC__) || (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)) || \
(defined(__cpp_constexpr) && __cpp_constexpr >= 200704)
#define FLATBUFFERS_CONSTEXPR constexpr
#else
#define FLATBUFFERS_CONSTEXPR const
#endif
#if (defined(__cplusplus) && __cplusplus >= 201402L) || \
(defined(__cpp_constexpr) && __cpp_constexpr >= 201304)
#define FLATBUFFERS_CONSTEXPR_CPP14 FLATBUFFERS_CONSTEXPR
#else
#define FLATBUFFERS_CONSTEXPR_CPP14
#endif
#if (defined(__GXX_EXPERIMENTAL_CXX0X__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)) || \
(defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 190023026)) || \
defined(__clang__)
#define FLATBUFFERS_NOEXCEPT noexcept
#else
#define FLATBUFFERS_NOEXCEPT
#endif
// NOTE: the FLATBUFFERS_DELETE_FUNC macro may change the access mode to
// private, so be sure to put it at the end or reset access mode explicitly.
#if (!defined(_MSC_VER) || _MSC_FULL_VER >= 180020827) && \
(!defined(__GNUC__) || (__GNUC__ * 100 + __GNUC_MINOR__ >= 404)) || \
defined(__clang__)
#define FLATBUFFERS_DELETE_FUNC(func) func = delete;
#else
#define FLATBUFFERS_DELETE_FUNC(func) private: func;
#endif
#ifndef FLATBUFFERS_HAS_STRING_VIEW
// Only provide flatbuffers::string_view if __has_include can be used
// to detect a header that provides an implementation
#if defined(__has_include)
// Check for std::string_view (in c++17)
#if __has_include(<string_view>) && (__cplusplus >= 201606 || _HAS_CXX17)
#include <string_view>
namespace flatbuffers {
typedef std::string_view string_view;
}
#define FLATBUFFERS_HAS_STRING_VIEW 1
// Check for std::experimental::string_view (in c++14, compiler-dependent)
#elif __has_include(<experimental/string_view>) && (__cplusplus >= 201411)
#include <experimental/string_view>
namespace flatbuffers {
typedef std::experimental::string_view string_view;
}
#define FLATBUFFERS_HAS_STRING_VIEW 1
#endif
#endif // __has_include
#endif // !FLATBUFFERS_HAS_STRING_VIEW
#ifndef FLATBUFFERS_HAS_NEW_STRTOD
// Modern (C++11) strtod and strtof functions are available for use.
// 1) nan/inf strings as argument of strtod;
// 2) hex-float as argument of strtod/strtof.
#if (defined(_MSC_VER) && _MSC_VER >= 1900) || \
(defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)) || \
(defined(__clang__))
#define FLATBUFFERS_HAS_NEW_STRTOD 1
#endif
#endif // !FLATBUFFERS_HAS_NEW_STRTOD
#ifndef FLATBUFFERS_LOCALE_INDEPENDENT
// Enable locale independent functions {strtof_l, strtod_l,strtoll_l, strtoull_l}.
// They are part of the POSIX-2008 but not part of the C/C++ standard.
// GCC/Clang have definition (_XOPEN_SOURCE>=700) if POSIX-2008.
#if ((defined(_MSC_VER) && _MSC_VER >= 1800) || \
(defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE>=700)))
#define FLATBUFFERS_LOCALE_INDEPENDENT 1
#else
#define FLATBUFFERS_LOCALE_INDEPENDENT 0
#endif
#endif // !FLATBUFFERS_LOCALE_INDEPENDENT
// Suppress Undefined Behavior Sanitizer (recoverable only). Usage:
// - __supress_ubsan__("undefined")
// - __supress_ubsan__("signed-integer-overflow")
#if defined(__clang__)
#define __supress_ubsan__(type) __attribute__((no_sanitize(type)))
#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)
#define __supress_ubsan__(type) __attribute__((no_sanitize_undefined))
#else
#define __supress_ubsan__(type)
#endif
// This is constexpr function used for checking compile-time constants.
// Avoid `#pragma warning(disable: 4127) // C4127: expression is constant`.
template<typename T> FLATBUFFERS_CONSTEXPR inline bool IsConstTrue(T t) {
return !!t;
}
// Enable C++ attribute [[]] if std:c++17 or higher.
#if ((__cplusplus >= 201703L) \
|| (defined(_MSVC_LANG) && (_MSVC_LANG >= 201703L)))
// All attributes unknown to an implementation are ignored without causing an error.
#define FLATBUFFERS_ATTRIBUTE(attr) [[attr]]
#define FLATBUFFERS_FALLTHROUGH() [[fallthrough]]
#else
#define FLATBUFFERS_ATTRIBUTE(attr)
#if FLATBUFFERS_CLANG >= 30800
#define FLATBUFFERS_FALLTHROUGH() [[clang::fallthrough]]
#elif FLATBUFFERS_GCC >= 70300
#define FLATBUFFERS_FALLTHROUGH() [[gnu::fallthrough]]
#else
#define FLATBUFFERS_FALLTHROUGH()
#endif
#endif
/// @endcond
/// @file
namespace flatbuffers {
/// @cond FLATBUFFERS_INTERNAL
// Our default offset / size type, 32bit on purpose on 64bit systems.
// Also, using a consistent offset type maintains compatibility of serialized
// offset values between 32bit and 64bit systems.
typedef uint32_t uoffset_t;
// Signed offsets for references that can go in both directions.
typedef int32_t soffset_t;
// Offset/index used in v-tables, can be changed to uint8_t in
// format forks to save a bit of space if desired.
typedef uint16_t voffset_t;
typedef uintmax_t largest_scalar_t;
// In 32bits, this evaluates to 2GB - 1
#define FLATBUFFERS_MAX_BUFFER_SIZE ((1ULL << (sizeof(soffset_t) * 8 - 1)) - 1)
// We support aligning the contents of buffers up to this size.
#define FLATBUFFERS_MAX_ALIGNMENT 16
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable: 4127) // C4127: conditional expression is constant
#endif
template<typename T> T EndianSwap(T t) {
#if defined(_MSC_VER)
#define FLATBUFFERS_BYTESWAP16 _byteswap_ushort
#define FLATBUFFERS_BYTESWAP32 _byteswap_ulong
#define FLATBUFFERS_BYTESWAP64 _byteswap_uint64
#elif defined(__ICCARM__)
#define FLATBUFFERS_BYTESWAP16 __REV16
#define FLATBUFFERS_BYTESWAP32 __REV
#define FLATBUFFERS_BYTESWAP64(x) \
((__REV(static_cast<uint32_t>(x >> 32U))) | (static_cast<uint64_t>(__REV(static_cast<uint32_t>(x)))) << 32U)
#else
#if defined(__GNUC__) && __GNUC__ * 100 + __GNUC_MINOR__ < 408 && !defined(__clang__)
// __builtin_bswap16 was missing prior to GCC 4.8.
#define FLATBUFFERS_BYTESWAP16(x) \
static_cast<uint16_t>(__builtin_bswap32(static_cast<uint32_t>(x) << 16))
#else
#define FLATBUFFERS_BYTESWAP16 __builtin_bswap16
#endif
#define FLATBUFFERS_BYTESWAP32 __builtin_bswap32
#define FLATBUFFERS_BYTESWAP64 __builtin_bswap64
#endif
if (sizeof(T) == 1) { // Compile-time if-then's.
return t;
} else if (sizeof(T) == 2) {
union { T t; uint16_t i; } u;
u.t = t;
u.i = FLATBUFFERS_BYTESWAP16(u.i);
return u.t;
} else if (sizeof(T) == 4) {
union { T t; uint32_t i; } u;
u.t = t;
u.i = FLATBUFFERS_BYTESWAP32(u.i);
return u.t;
} else if (sizeof(T) == 8) {
union { T t; uint64_t i; } u;
u.t = t;
u.i = FLATBUFFERS_BYTESWAP64(u.i);
return u.t;
} else {
FLATBUFFERS_ASSERT(0);
}
}
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
template<typename T> T EndianScalar(T t) {
#if FLATBUFFERS_LITTLEENDIAN
return t;
#else
return EndianSwap(t);
#endif
}
template<typename T>
// UBSAN: C++ aliasing type rules, see std::bit_cast<> for details.
__supress_ubsan__("alignment")
T ReadScalar(const void *p) {
return EndianScalar(*reinterpret_cast<const T *>(p));
}
template<typename T>
// UBSAN: C++ aliasing type rules, see std::bit_cast<> for details.
__supress_ubsan__("alignment")
void WriteScalar(void *p, T t) {
*reinterpret_cast<T *>(p) = EndianScalar(t);
}
template<typename T> struct Offset;
template<typename T> __supress_ubsan__("alignment") void WriteScalar(void *p, Offset<T> t) {
*reinterpret_cast<uoffset_t *>(p) = EndianScalar(t.o);
}
// Computes how many bytes you'd have to pad to be able to write an
// "scalar_size" scalar if the buffer had grown to "buf_size" (downwards in
// memory).
inline size_t PaddingBytes(size_t buf_size, size_t scalar_size) {
return ((~buf_size) + 1) & (scalar_size - 1);
}
} // namespace flatbuffers
#endif // FLATBUFFERS_BASE_H_
third_party/flatbuffers/include/flatbuffers/code_generators.h
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/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_CODE_GENERATORS_H_
#define FLATBUFFERS_CODE_GENERATORS_H_
#include <map>
#include <sstream>
#include "flatbuffers/idl.h"
namespace flatbuffers {
// Utility class to assist in generating code through use of text templates.
//
// Example code:
// CodeWriter code("\t");
// code.SetValue("NAME", "Foo");
// code += "void {{NAME}}() { printf("%s", "{{NAME}}"); }";
// code.SetValue("NAME", "Bar");
// code += "void {{NAME}}() { printf("%s", "{{NAME}}"); }";
// std::cout << code.ToString() << std::endl;
//
// Output:
// void Foo() { printf("%s", "Foo"); }
// void Bar() { printf("%s", "Bar"); }
class CodeWriter {
public:
CodeWriter(std::string pad = std::string())
: pad_(pad), cur_ident_lvl_(0), ignore_ident_(false) {}
// Clears the current "written" code.
void Clear() {
stream_.str("");
stream_.clear();
}
// Associates a key with a value. All subsequent calls to operator+=, where
// the specified key is contained in {{ and }} delimiters will be replaced by
// the given value.
void SetValue(const std::string &key, const std::string &value) {
value_map_[key] = value;
}
std::string GetValue(const std::string &key) const {
const auto it = value_map_.find(key);
return it == value_map_.end() ? "" : it->second;
}
// Appends the given text to the generated code as well as a newline
// character. Any text within {{ and }} delimeters is replaced by values
// previously stored in the CodeWriter by calling SetValue above. The newline
// will be suppressed if the text ends with the \\ character.
void operator+=(std::string text);
// Returns the current contents of the CodeWriter as a std::string.
std::string ToString() const { return stream_.str(); }
// Increase ident level for writing code
void IncrementIdentLevel() { cur_ident_lvl_++; }
// Decrease ident level for writing code
void DecrementIdentLevel() {
if (cur_ident_lvl_) cur_ident_lvl_--;
}
private:
std::map<std::string, std::string> value_map_;
std::stringstream stream_;
std::string pad_;
int cur_ident_lvl_;
bool ignore_ident_;
// Add ident padding (tab or space) based on ident level
void AppendIdent(std::stringstream &stream);
};
class BaseGenerator {
public:
virtual bool generate() = 0;
static std::string NamespaceDir(const Parser &parser, const std::string &path,
const Namespace &ns);
protected:
BaseGenerator(const Parser &parser, const std::string &path,
const std::string &file_name,
std::string qualifying_start,
std::string qualifying_separator)
: parser_(parser),
path_(path),
file_name_(file_name),
qualifying_start_(qualifying_start),
qualifying_separator_(qualifying_separator) {}
virtual ~BaseGenerator() {}
// No copy/assign.
BaseGenerator &operator=(const BaseGenerator &);
BaseGenerator(const BaseGenerator &);
std::string NamespaceDir(const Namespace &ns) const;
static const char *FlatBuffersGeneratedWarning();
static std::string FullNamespace(const char *separator, const Namespace &ns);
static std::string LastNamespacePart(const Namespace &ns);
// tracks the current namespace for early exit in WrapInNameSpace
// c++, java and csharp returns a different namespace from
// the following default (no early exit, always fully qualify),
// which works for js and php
virtual const Namespace *CurrentNameSpace() const { return nullptr; }
// Ensure that a type is prefixed with its namespace even within
// its own namespace to avoid conflict between generated method
// names and similarly named classes or structs
std::string WrapInNameSpace(const Namespace *ns,
const std::string &name) const;
std::string WrapInNameSpace(const Definition &def) const;
std::string GetNameSpace(const Definition &def) const;
const Parser &parser_;
const std::string &path_;
const std::string &file_name_;
const std::string qualifying_start_;
const std::string qualifying_separator_;
};
struct CommentConfig {
const char *first_line;
const char *content_line_prefix;
const char *last_line;
};
extern void GenComment(const std::vector<std::string> &dc,
std::string *code_ptr, const CommentConfig *config,
const char *prefix = "");
class FloatConstantGenerator {
public:
virtual ~FloatConstantGenerator() {}
std::string GenFloatConstant(const FieldDef &field) const;
private:
virtual std::string Value(double v, const std::string &src) const = 0;
virtual std::string Inf(double v) const = 0;
virtual std::string NaN(double v) const = 0;
virtual std::string Value(float v, const std::string &src) const = 0;
virtual std::string Inf(float v) const = 0;
virtual std::string NaN(float v) const = 0;
template<typename T>
std::string GenFloatConstantImpl(const FieldDef &field) const;
};
class SimpleFloatConstantGenerator : public FloatConstantGenerator {
public:
SimpleFloatConstantGenerator(const char *nan_number,
const char *pos_inf_number,
const char *neg_inf_number);
private:
std::string Value(double v,
const std::string &src) const FLATBUFFERS_OVERRIDE;
std::string Inf(double v) const FLATBUFFERS_OVERRIDE;
std::string NaN(double v) const FLATBUFFERS_OVERRIDE;
std::string Value(float v, const std::string &src) const FLATBUFFERS_OVERRIDE;
std::string Inf(float v) const FLATBUFFERS_OVERRIDE;
std::string NaN(float v) const FLATBUFFERS_OVERRIDE;
const std::string nan_number_;
const std::string pos_inf_number_;
const std::string neg_inf_number_;
};
// C++, C#, Java like generator.
class TypedFloatConstantGenerator : public FloatConstantGenerator {
public:
TypedFloatConstantGenerator(const char *double_prefix,
const char *single_prefix, const char *nan_number,
const char *pos_inf_number,
const char *neg_inf_number = "");
private:
std::string Value(double v,
const std::string &src) const FLATBUFFERS_OVERRIDE;
std::string Inf(double v) const FLATBUFFERS_OVERRIDE;
std::string NaN(double v) const FLATBUFFERS_OVERRIDE;
std::string Value(float v, const std::string &src) const FLATBUFFERS_OVERRIDE;
std::string Inf(float v) const FLATBUFFERS_OVERRIDE;
std::string NaN(float v) const FLATBUFFERS_OVERRIDE;
std::string MakeNaN(const std::string &prefix) const;
std::string MakeInf(bool neg, const std::string &prefix) const;
const std::string double_prefix_;
const std::string single_prefix_;
const std::string nan_number_;
const std::string pos_inf_number_;
const std::string neg_inf_number_;
};
} // namespace flatbuffers
#endif // FLATBUFFERS_CODE_GENERATORS_H_
third_party/flatbuffers/include/flatbuffers/flatbuffers.h
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third_party/flatbuffers/include/flatbuffers/flatc.h
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/*
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <functional>
#include <limits>
#include <string>
#include "flatbuffers/flatbuffers.h"
#include "flatbuffers/idl.h"
#include "flatbuffers/util.h"
#ifndef FLATC_H_
# define FLATC_H_
namespace flatbuffers {
class FlatCompiler {
public:
// Output generator for the various programming languages and formats we
// support.
struct Generator {
typedef bool (*GenerateFn)(const flatbuffers::Parser &parser,
const std::string &path,
const std::string &file_name);
typedef std::string (*MakeRuleFn)(const flatbuffers::Parser &parser,
const std::string &path,
const std::string &file_name);
GenerateFn generate;
const char *generator_opt_short;
const char *generator_opt_long;
const char *lang_name;
bool schema_only;
GenerateFn generateGRPC;
flatbuffers::IDLOptions::Language lang;
const char *generator_help;
MakeRuleFn make_rule;
};
typedef void (*WarnFn)(const FlatCompiler *flatc, const std::string &warn,
bool show_exe_name);
typedef void (*ErrorFn)(const FlatCompiler *flatc, const std::string &err,
bool usage, bool show_exe_name);
// Parameters required to initialize the FlatCompiler.
struct InitParams {
InitParams()
: generators(nullptr),
num_generators(0),
warn_fn(nullptr),
error_fn(nullptr) {}
const Generator *generators;
size_t num_generators;
WarnFn warn_fn;
ErrorFn error_fn;
};
explicit FlatCompiler(const InitParams &params) : params_(params) {}
int Compile(int argc, const char **argv);
std::string GetUsageString(const char *program_name) const;
private:
void ParseFile(flatbuffers::Parser &parser, const std::string &filename,
const std::string &contents,
std::vector<const char *> &include_directories) const;
void LoadBinarySchema(Parser &parser, const std::string &filename,
const std::string &contents);
void Warn(const std::string &warn, bool show_exe_name = true) const;
void Error(const std::string &err, bool usage = true,
bool show_exe_name = true) const;
InitParams params_;
};
} // namespace flatbuffers
#endif // FLATC_H_
third_party/flatbuffers/include/flatbuffers/flexbuffers.h
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third_party/flatbuffers/include/flatbuffers/grpc.h
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/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_GRPC_H_
#define FLATBUFFERS_GRPC_H_
// Helper functionality to glue FlatBuffers and GRPC.
#include "flatbuffers/flatbuffers.h"
#include "grpc++/support/byte_buffer.h"
#include "grpc/byte_buffer_reader.h"
namespace flatbuffers {
namespace grpc {
// Message is a typed wrapper around a buffer that manages the underlying
// `grpc_slice` and also provides flatbuffers-specific helpers such as `Verify`
// and `GetRoot`. Since it is backed by a `grpc_slice`, the underlying buffer
// is refcounted and ownership is be managed automatically.
template<class T> class Message {
public:
Message() : slice_(grpc_empty_slice()) {}
Message(grpc_slice slice, bool add_ref)
: slice_(add_ref ? grpc_slice_ref(slice) : slice) {}
Message &operator=(const Message &other) = delete;
Message(Message &&other) : slice_(other.slice_) {
other.slice_ = grpc_empty_slice();
}
Message(const Message &other) = delete;
Message &operator=(Message &&other) {
grpc_slice_unref(slice_);
slice_ = other.slice_;
other.slice_ = grpc_empty_slice();
return *this;
}
~Message() { grpc_slice_unref(slice_); }
const uint8_t *mutable_data() const { return GRPC_SLICE_START_PTR(slice_); }
const uint8_t *data() const { return GRPC_SLICE_START_PTR(slice_); }
size_t size() const { return GRPC_SLICE_LENGTH(slice_); }
bool Verify() const {
Verifier verifier(data(), size());
return verifier.VerifyBuffer<T>(nullptr);
}
T *GetMutableRoot() { return flatbuffers::GetMutableRoot<T>(mutable_data()); }
const T *GetRoot() const { return flatbuffers::GetRoot<T>(data()); }
// This is only intended for serializer use, or if you know what you're doing
const grpc_slice &BorrowSlice() const { return slice_; }
private:
grpc_slice slice_;
};
class MessageBuilder;
// SliceAllocator is a gRPC-specific allocator that uses the `grpc_slice`
// refcounted slices to manage memory ownership. This makes it easy and
// efficient to transfer buffers to gRPC.
class SliceAllocator : public Allocator {
public:
SliceAllocator() : slice_(grpc_empty_slice()) {}
SliceAllocator(const SliceAllocator &other) = delete;
SliceAllocator &operator=(const SliceAllocator &other) = delete;
SliceAllocator(SliceAllocator &&other)
: slice_(grpc_empty_slice()) {
// default-construct and swap idiom
swap(other);
}
SliceAllocator &operator=(SliceAllocator &&other) {
// move-construct and swap idiom
SliceAllocator temp(std::move(other));
swap(temp);
return *this;
}
void swap(SliceAllocator &other) {
using std::swap;
swap(slice_, other.slice_);
}
virtual ~SliceAllocator() { grpc_slice_unref(slice_); }
virtual uint8_t *allocate(size_t size) override {
FLATBUFFERS_ASSERT(GRPC_SLICE_IS_EMPTY(slice_));
slice_ = grpc_slice_malloc(size);
return GRPC_SLICE_START_PTR(slice_);
}
virtual void deallocate(uint8_t *p, size_t size) override {
FLATBUFFERS_ASSERT(p == GRPC_SLICE_START_PTR(slice_));
FLATBUFFERS_ASSERT(size == GRPC_SLICE_LENGTH(slice_));
grpc_slice_unref(slice_);
slice_ = grpc_empty_slice();
}
virtual uint8_t *reallocate_downward(uint8_t *old_p, size_t old_size,
size_t new_size, size_t in_use_back,
size_t in_use_front) override {
FLATBUFFERS_ASSERT(old_p == GRPC_SLICE_START_PTR(slice_));
FLATBUFFERS_ASSERT(old_size == GRPC_SLICE_LENGTH(slice_));
FLATBUFFERS_ASSERT(new_size > old_size);
grpc_slice old_slice = slice_;
grpc_slice new_slice = grpc_slice_malloc(new_size);
uint8_t *new_p = GRPC_SLICE_START_PTR(new_slice);
memcpy_downward(old_p, old_size, new_p, new_size, in_use_back,
in_use_front);
slice_ = new_slice;
grpc_slice_unref(old_slice);
return new_p;
}
private:
grpc_slice &get_slice(uint8_t *p, size_t size) {
FLATBUFFERS_ASSERT(p == GRPC_SLICE_START_PTR(slice_));
FLATBUFFERS_ASSERT(size == GRPC_SLICE_LENGTH(slice_));
return slice_;
}
grpc_slice slice_;
friend class MessageBuilder;
};
// SliceAllocatorMember is a hack to ensure that the MessageBuilder's
// slice_allocator_ member is constructed before the FlatBufferBuilder, since
// the allocator is used in the FlatBufferBuilder ctor.
namespace detail {
struct SliceAllocatorMember {
SliceAllocator slice_allocator_;
};
} // namespace detail
// MessageBuilder is a gRPC-specific FlatBufferBuilder that uses SliceAllocator
// to allocate gRPC buffers.
class MessageBuilder : private detail::SliceAllocatorMember,
public FlatBufferBuilder {
public:
explicit MessageBuilder(uoffset_t initial_size = 1024)
: FlatBufferBuilder(initial_size, &slice_allocator_, false) {}
MessageBuilder(const MessageBuilder &other) = delete;
MessageBuilder &operator=(const MessageBuilder &other) = delete;
MessageBuilder(MessageBuilder &&other)
: FlatBufferBuilder(1024, &slice_allocator_, false) {
// Default construct and swap idiom.
Swap(other);
}
/// Create a MessageBuilder from a FlatBufferBuilder.
explicit MessageBuilder(FlatBufferBuilder &&src, void (*dealloc)(void*, size_t) = &DefaultAllocator::dealloc)
: FlatBufferBuilder(1024, &slice_allocator_, false) {
src.Swap(*this);
src.SwapBufAllocator(*this);
if (buf_.capacity()) {
uint8_t *buf = buf_.scratch_data(); // pointer to memory
size_t capacity = buf_.capacity(); // size of memory
slice_allocator_.slice_ = grpc_slice_new_with_len(buf, capacity, dealloc);
}
else {
slice_allocator_.slice_ = grpc_empty_slice();
}
}
/// Move-assign a FlatBufferBuilder to a MessageBuilder.
/// Only FlatBufferBuilder with default allocator (basically, nullptr) is supported.
MessageBuilder &operator=(FlatBufferBuilder &&src) {
// Move construct a temporary and swap
MessageBuilder temp(std::move(src));
Swap(temp);
return *this;
}
MessageBuilder &operator=(MessageBuilder &&other) {
// Move construct a temporary and swap
MessageBuilder temp(std::move(other));
Swap(temp);
return *this;
}
void Swap(MessageBuilder &other) {
slice_allocator_.swap(other.slice_allocator_);
FlatBufferBuilder::Swap(other);
// After swapping the FlatBufferBuilder, we swap back the allocator, which restores
// the original allocator back in place. This is necessary because MessageBuilder's
// allocator is its own member (SliceAllocatorMember). The allocator passed to
// FlatBufferBuilder::vector_downward must point to this member.
buf_.swap_allocator(other.buf_);
}
// Releases the ownership of the buffer pointer.
// Returns the size, offset, and the original grpc_slice that
// allocated the buffer. Also see grpc_slice_unref().
uint8_t *ReleaseRaw(size_t &size, size_t &offset, grpc_slice &slice) {
uint8_t *buf = FlatBufferBuilder::ReleaseRaw(size, offset);
slice = slice_allocator_.slice_;
slice_allocator_.slice_ = grpc_empty_slice();
return buf;
}
~MessageBuilder() {}
// GetMessage extracts the subslice of the buffer corresponding to the
// flatbuffers-encoded region and wraps it in a `Message<T>` to handle buffer
// ownership.
template<class T> Message<T> GetMessage() {
auto buf_data = buf_.scratch_data(); // pointer to memory
auto buf_size = buf_.capacity(); // size of memory
auto msg_data = buf_.data(); // pointer to msg
auto msg_size = buf_.size(); // size of msg
// Do some sanity checks on data/size
FLATBUFFERS_ASSERT(msg_data);
FLATBUFFERS_ASSERT(msg_size);
FLATBUFFERS_ASSERT(msg_data >= buf_data);
FLATBUFFERS_ASSERT(msg_data + msg_size <= buf_data + buf_size);
// Calculate offsets from the buffer start
auto begin = msg_data - buf_data;
auto end = begin + msg_size;
// Get the slice we are working with (no refcount change)
grpc_slice slice = slice_allocator_.get_slice(buf_data, buf_size);
// Extract a subslice of the existing slice (increment refcount)
grpc_slice subslice = grpc_slice_sub(slice, begin, end);
// Wrap the subslice in a `Message<T>`, but don't increment refcount
Message<T> msg(subslice, false);
return msg;
}
template<class T> Message<T> ReleaseMessage() {
Message<T> msg = GetMessage<T>();
Reset();
return msg;
}
private:
// SliceAllocator slice_allocator_; // part of SliceAllocatorMember
};
} // namespace grpc
} // namespace flatbuffers
namespace grpc {
template<class T> class SerializationTraits<flatbuffers::grpc::Message<T>> {
public:
static grpc::Status Serialize(const flatbuffers::grpc::Message<T> &msg,
grpc_byte_buffer **buffer, bool *own_buffer) {
// We are passed in a `Message<T>`, which is a wrapper around a
// `grpc_slice`. We extract it here using `BorrowSlice()`. The const cast
// is necesary because the `grpc_raw_byte_buffer_create` func expects
// non-const slices in order to increment their refcounts.
grpc_slice *slice = const_cast<grpc_slice *>(&msg.BorrowSlice());
// Now use `grpc_raw_byte_buffer_create` to package the single slice into a
// `grpc_byte_buffer`, incrementing the refcount in the process.
*buffer = grpc_raw_byte_buffer_create(slice, 1);
*own_buffer = true;
return grpc::Status::OK;
}
// Deserialize by pulling the
static grpc::Status Deserialize(grpc_byte_buffer *buffer,
flatbuffers::grpc::Message<T> *msg) {
if (!buffer) {
return ::grpc::Status(::grpc::StatusCode::INTERNAL, "No payload");
}
// Check if this is a single uncompressed slice.
if ((buffer->type == GRPC_BB_RAW) &&
(buffer->data.raw.compression == GRPC_COMPRESS_NONE) &&
(buffer->data.raw.slice_buffer.count == 1)) {
// If it is, then we can reference the `grpc_slice` directly.
grpc_slice slice = buffer->data.raw.slice_buffer.slices[0];
// We wrap a `Message<T>` around the slice, incrementing the refcount.
*msg = flatbuffers::grpc::Message<T>(slice, true);
} else {
// Otherwise, we need to use `grpc_byte_buffer_reader_readall` to read
// `buffer` into a single contiguous `grpc_slice`. The gRPC reader gives
// us back a new slice with the refcount already incremented.
grpc_byte_buffer_reader reader;
grpc_byte_buffer_reader_init(&reader, buffer);
grpc_slice slice = grpc_byte_buffer_reader_readall(&reader);
grpc_byte_buffer_reader_destroy(&reader);
// We wrap a `Message<T>` around the slice, but dont increment refcount
*msg = flatbuffers::grpc::Message<T>(slice, false);
}
grpc_byte_buffer_destroy(buffer);
#if FLATBUFFERS_GRPC_DISABLE_AUTO_VERIFICATION
return ::grpc::Status::OK;
#else
if (msg->Verify()) {
return ::grpc::Status::OK;
} else {
return ::grpc::Status(::grpc::StatusCode::INTERNAL,
"Message verification failed");
}
#endif
}
};
} // namespace grpc
#endif // FLATBUFFERS_GRPC_H_
third_party/flatbuffers/include/flatbuffers/hash.h
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/*
* Copyright 2015 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_HASH_H_
#define FLATBUFFERS_HASH_H_
#include <cstdint>
#include <cstring>
#include "flatbuffers/flatbuffers.h"
namespace flatbuffers {
template<typename T> struct FnvTraits {
static const T kFnvPrime;
static const T kOffsetBasis;
};
template<> struct FnvTraits<uint32_t> {
static const uint32_t kFnvPrime = 0x01000193;
static const uint32_t kOffsetBasis = 0x811C9DC5;
};
template<> struct FnvTraits<uint64_t> {
static const uint64_t kFnvPrime = 0x00000100000001b3ULL;
static const uint64_t kOffsetBasis = 0xcbf29ce484222645ULL;
};
template<typename T> T HashFnv1(const char *input) {
T hash = FnvTraits<T>::kOffsetBasis;
for (const char *c = input; *c; ++c) {
hash *= FnvTraits<T>::kFnvPrime;
hash ^= static_cast<unsigned char>(*c);
}
return hash;
}
template<typename T> T HashFnv1a(const char *input) {
T hash = FnvTraits<T>::kOffsetBasis;
for (const char *c = input; *c; ++c) {
hash ^= static_cast<unsigned char>(*c);
hash *= FnvTraits<T>::kFnvPrime;
}
return hash;
}
template <> inline uint16_t HashFnv1<uint16_t>(const char *input) {
uint32_t hash = HashFnv1<uint32_t>(input);
return (hash >> 16) ^ (hash & 0xffff);
}
template <> inline uint16_t HashFnv1a<uint16_t>(const char *input) {
uint32_t hash = HashFnv1a<uint32_t>(input);
return (hash >> 16) ^ (hash & 0xffff);
}
template <typename T> struct NamedHashFunction {
const char *name;
typedef T (*HashFunction)(const char *);
HashFunction function;
};
const NamedHashFunction<uint16_t> kHashFunctions16[] = {
{ "fnv1_16", HashFnv1<uint16_t> },
{ "fnv1a_16", HashFnv1a<uint16_t> },
};
const NamedHashFunction<uint32_t> kHashFunctions32[] = {
{ "fnv1_32", HashFnv1<uint32_t> },
{ "fnv1a_32", HashFnv1a<uint32_t> },
};
const NamedHashFunction<uint64_t> kHashFunctions64[] = {
{ "fnv1_64", HashFnv1<uint64_t> },
{ "fnv1a_64", HashFnv1a<uint64_t> },
};
inline NamedHashFunction<uint16_t>::HashFunction FindHashFunction16(
const char *name) {
std::size_t size = sizeof(kHashFunctions16) / sizeof(kHashFunctions16[0]);
for (std::size_t i = 0; i < size; ++i) {
if (std::strcmp(name, kHashFunctions16[i].name) == 0) {
return kHashFunctions16[i].function;
}
}
return nullptr;
}
inline NamedHashFunction<uint32_t>::HashFunction FindHashFunction32(
const char *name) {
std::size_t size = sizeof(kHashFunctions32) / sizeof(kHashFunctions32[0]);
for (std::size_t i = 0; i < size; ++i) {
if (std::strcmp(name, kHashFunctions32[i].name) == 0) {
return kHashFunctions32[i].function;
}
}
return nullptr;
}
inline NamedHashFunction<uint64_t>::HashFunction FindHashFunction64(
const char *name) {
std::size_t size = sizeof(kHashFunctions64) / sizeof(kHashFunctions64[0]);
for (std::size_t i = 0; i < size; ++i) {
if (std::strcmp(name, kHashFunctions64[i].name) == 0) {
return kHashFunctions64[i].function;
}
}
return nullptr;
}
} // namespace flatbuffers
#endif // FLATBUFFERS_HASH_H_
third_party/flatbuffers/include/flatbuffers/idl.h
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third_party/flatbuffers/include/flatbuffers/minireflect.h
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/*
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_MINIREFLECT_H_
#define FLATBUFFERS_MINIREFLECT_H_
#include "flatbuffers/flatbuffers.h"
#include "flatbuffers/util.h"
namespace flatbuffers {
// Utilities that can be used with the "mini reflection" tables present
// in generated code with --reflect-types (only types) or --reflect-names
// (also names).
// This allows basic reflection functionality such as pretty-printing
// that does not require the use of the schema parser or loading of binary
// schema files at runtime (reflection.h).
// For any of the functions below that take `const TypeTable *`, you pass
// `FooTypeTable()` if the type of the root is `Foo`.
// First, a generic iterator that can be used by multiple algorithms.
struct IterationVisitor {
// These mark the scope of a table or struct.
virtual void StartSequence() {}
virtual void EndSequence() {}
// Called for each field regardless of wether it is present or not.
// If not present, val == nullptr. set_idx is the index of all set fields.
virtual void Field(size_t /*field_idx*/, size_t /*set_idx*/,
ElementaryType /*type*/, bool /*is_vector*/,
const TypeTable * /*type_table*/, const char * /*name*/,
const uint8_t * /*val*/) {}
// Called for a value that is actually present, after a field, or as part
// of a vector.
virtual void UType(uint8_t, const char *) {}
virtual void Bool(bool) {}
virtual void Char(int8_t, const char *) {}
virtual void UChar(uint8_t, const char *) {}
virtual void Short(int16_t, const char *) {}
virtual void UShort(uint16_t, const char *) {}
virtual void Int(int32_t, const char *) {}
virtual void UInt(uint32_t, const char *) {}
virtual void Long(int64_t) {}
virtual void ULong(uint64_t) {}
virtual void Float(float) {}
virtual void Double(double) {}
virtual void String(const String *) {}
virtual void Unknown(const uint8_t *) {} // From a future version.
// These mark the scope of a vector.
virtual void StartVector() {}
virtual void EndVector() {}
virtual void Element(size_t /*i*/, ElementaryType /*type*/,
const TypeTable * /*type_table*/,
const uint8_t * /*val*/) {}
virtual ~IterationVisitor() {}
};
inline size_t InlineSize(ElementaryType type, const TypeTable *type_table) {
switch (type) {
case ET_UTYPE:
case ET_BOOL:
case ET_CHAR:
case ET_UCHAR: return 1;
case ET_SHORT:
case ET_USHORT: return 2;
case ET_INT:
case ET_UINT:
case ET_FLOAT:
case ET_STRING: return 4;
case ET_LONG:
case ET_ULONG:
case ET_DOUBLE: return 8;
case ET_SEQUENCE:
switch (type_table->st) {
case ST_TABLE:
case ST_UNION: return 4;
case ST_STRUCT: return static_cast<size_t>(type_table->values[type_table->num_elems]);
default: FLATBUFFERS_ASSERT(false); return 1;
}
default: FLATBUFFERS_ASSERT(false); return 1;
}
}
inline int64_t LookupEnum(int64_t enum_val, const int64_t *values,
size_t num_values) {
if (!values) return enum_val;
for (size_t i = 0; i < num_values; i++) {
if (enum_val == values[i]) return static_cast<int64_t>(i);
}
return -1; // Unknown enum value.
}
template<typename T> const char *EnumName(T tval, const TypeTable *type_table) {
if (!type_table || !type_table->names) return nullptr;
auto i = LookupEnum(static_cast<int64_t>(tval), type_table->values,
type_table->num_elems);
if (i >= 0 && i < static_cast<int64_t>(type_table->num_elems)) {
return type_table->names[i];
}
return nullptr;
}
void IterateObject(const uint8_t *obj, const TypeTable *type_table,
IterationVisitor *visitor);
inline void IterateValue(ElementaryType type, const uint8_t *val,
const TypeTable *type_table, const uint8_t *prev_val,
soffset_t vector_index, IterationVisitor *visitor) {
switch (type) {
case ET_UTYPE: {
auto tval = ReadScalar<uint8_t>(val);
visitor->UType(tval, EnumName(tval, type_table));
break;
}
case ET_BOOL: {
visitor->Bool(ReadScalar<uint8_t>(val) != 0);
break;
}
case ET_CHAR: {
auto tval = ReadScalar<int8_t>(val);
visitor->Char(tval, EnumName(tval, type_table));
break;
}
case ET_UCHAR: {
auto tval = ReadScalar<uint8_t>(val);
visitor->UChar(tval, EnumName(tval, type_table));
break;
}
case ET_SHORT: {
auto tval = ReadScalar<int16_t>(val);
visitor->Short(tval, EnumName(tval, type_table));
break;
}
case ET_USHORT: {
auto tval = ReadScalar<uint16_t>(val);
visitor->UShort(tval, EnumName(tval, type_table));
break;
}
case ET_INT: {
auto tval = ReadScalar<int32_t>(val);
visitor->Int(tval, EnumName(tval, type_table));
break;
}
case ET_UINT: {
auto tval = ReadScalar<uint32_t>(val);
visitor->UInt(tval, EnumName(tval, type_table));
break;
}
case ET_LONG: {
visitor->Long(ReadScalar<int64_t>(val));
break;
}
case ET_ULONG: {
visitor->ULong(ReadScalar<uint64_t>(val));
break;
}
case ET_FLOAT: {
visitor->Float(ReadScalar<float>(val));
break;
}
case ET_DOUBLE: {
visitor->Double(ReadScalar<double>(val));
break;
}
case ET_STRING: {
val += ReadScalar<uoffset_t>(val);
visitor->String(reinterpret_cast<const String *>(val));
break;
}
case ET_SEQUENCE: {
switch (type_table->st) {
case ST_TABLE:
val += ReadScalar<uoffset_t>(val);
IterateObject(val, type_table, visitor);
break;
case ST_STRUCT: IterateObject(val, type_table, visitor); break;
case ST_UNION: {
val += ReadScalar<uoffset_t>(val);
FLATBUFFERS_ASSERT(prev_val);
auto union_type = *prev_val; // Always a uint8_t.
if (vector_index >= 0) {
auto type_vec = reinterpret_cast<const Vector<uint8_t> *>(prev_val);
union_type = type_vec->Get(static_cast<uoffset_t>(vector_index));
}
auto type_code_idx =
LookupEnum(union_type, type_table->values, type_table->num_elems);
if (type_code_idx >= 0 &&
type_code_idx < static_cast<int32_t>(type_table->num_elems)) {
auto type_code = type_table->type_codes[type_code_idx];
switch (type_code.base_type) {
case ET_SEQUENCE: {
auto ref = type_table->type_refs[type_code.sequence_ref]();
IterateObject(val, ref, visitor);
break;
}
case ET_STRING:
visitor->String(reinterpret_cast<const String *>(val));
break;
default: visitor->Unknown(val);
}
} else {
visitor->Unknown(val);
}
break;
}
case ST_ENUM: FLATBUFFERS_ASSERT(false); break;
}
break;
}
default: {
visitor->Unknown(val);
break;
}
}
}
inline void IterateObject(const uint8_t *obj, const TypeTable *type_table,
IterationVisitor *visitor) {
visitor->StartSequence();
const uint8_t *prev_val = nullptr;
size_t set_idx = 0;
for (size_t i = 0; i < type_table->num_elems; i++) {
auto type_code = type_table->type_codes[i];
auto type = static_cast<ElementaryType>(type_code.base_type);
auto is_vector = type_code.is_vector != 0;
auto ref_idx = type_code.sequence_ref;
const TypeTable *ref = nullptr;
if (ref_idx >= 0) { ref = type_table->type_refs[ref_idx](); }
auto name = type_table->names ? type_table->names[i] : nullptr;
const uint8_t *val = nullptr;
if (type_table->st == ST_TABLE) {
val = reinterpret_cast<const Table *>(obj)->GetAddressOf(
FieldIndexToOffset(static_cast<voffset_t>(i)));
} else {
val = obj + type_table->values[i];
}
visitor->Field(i, set_idx, type, is_vector, ref, name, val);
if (val) {
set_idx++;
if (is_vector) {
val += ReadScalar<uoffset_t>(val);
auto vec = reinterpret_cast<const Vector<uint8_t> *>(val);
visitor->StartVector();
auto elem_ptr = vec->Data();
for (size_t j = 0; j < vec->size(); j++) {
visitor->Element(j, type, ref, elem_ptr);
IterateValue(type, elem_ptr, ref, prev_val, static_cast<soffset_t>(j),
visitor);
elem_ptr += InlineSize(type, ref);
}
visitor->EndVector();
} else {
IterateValue(type, val, ref, prev_val, -1, visitor);
}
}
prev_val = val;
}
visitor->EndSequence();
}
inline void IterateFlatBuffer(const uint8_t *buffer,
const TypeTable *type_table,
IterationVisitor *callback) {
IterateObject(GetRoot<uint8_t>(buffer), type_table, callback);
}
// Outputting a Flatbuffer to a string. Tries to conform as close to JSON /
// the output generated by idl_gen_text.cpp.
struct ToStringVisitor : public IterationVisitor {
std::string s;
std::string d;
bool q;
std::string in;
size_t indent_level;
bool vector_delimited;
ToStringVisitor(std::string delimiter, bool quotes, std::string indent,
bool vdelimited = true)
: d(delimiter),
q(quotes),
in(indent),
indent_level(0),
vector_delimited(vdelimited) {}
ToStringVisitor(std::string delimiter)
: d(delimiter),
q(false),
in(""),
indent_level(0),
vector_delimited(true) {}
void append_indent() {
for (size_t i = 0; i < indent_level; i++) { s += in; }
}
void StartSequence() {
s += "{";
s += d;
indent_level++;
}
void EndSequence() {
s += d;
indent_level--;
append_indent();
s += "}";
}
void Field(size_t /*field_idx*/, size_t set_idx, ElementaryType /*type*/,
bool /*is_vector*/, const TypeTable * /*type_table*/,
const char *name, const uint8_t *val) {
if (!val) return;
if (set_idx) {
s += ",";
s += d;
}
append_indent();
if (name) {
if (q) s += "\"";
s += name;
if (q) s += "\"";
s += ": ";
}
}
template<typename T> void Named(T x, const char *name) {
if (name) {
if (q) s += "\"";
s += name;
if (q) s += "\"";
} else {
s += NumToString(x);
}
}
void UType(uint8_t x, const char *name) { Named(x, name); }
void Bool(bool x) { s += x ? "true" : "false"; }
void Char(int8_t x, const char *name) { Named(x, name); }
void UChar(uint8_t x, const char *name) { Named(x, name); }
void Short(int16_t x, const char *name) { Named(x, name); }
void UShort(uint16_t x, const char *name) { Named(x, name); }
void Int(int32_t x, const char *name) { Named(x, name); }
void UInt(uint32_t x, const char *name) { Named(x, name); }
void Long(int64_t x) { s += NumToString(x); }
void ULong(uint64_t x) { s += NumToString(x); }
void Float(float x) { s += NumToString(x); }
void Double(double x) { s += NumToString(x); }
void String(const struct String *str) {
EscapeString(str->c_str(), str->size(), &s, true, false);
}
void Unknown(const uint8_t *) { s += "(?)"; }
void StartVector() {
s += "[";
if (vector_delimited) {
s += d;
indent_level++;
append_indent();
} else {
s += " ";
}
}
void EndVector() {
if (vector_delimited) {
s += d;
indent_level--;
append_indent();
} else {
s += " ";
}
s += "]";
}
void Element(size_t i, ElementaryType /*type*/,
const TypeTable * /*type_table*/, const uint8_t * /*val*/) {
if (i) {
s += ",";
if (vector_delimited) {
s += d;
append_indent();
} else {
s += " ";
}
}
}
};
inline std::string FlatBufferToString(const uint8_t *buffer,
const TypeTable *type_table,
bool multi_line = false,
bool vector_delimited = true) {
ToStringVisitor tostring_visitor(multi_line ? "\n" : " ", false, "",
vector_delimited);
IterateFlatBuffer(buffer, type_table, &tostring_visitor);
return tostring_visitor.s;
}
} // namespace flatbuffers
#endif // FLATBUFFERS_MINIREFLECT_H_
third_party/flatbuffers/include/flatbuffers/reflection.h
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/*
* Copyright 2015 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_REFLECTION_H_
#define FLATBUFFERS_REFLECTION_H_
// This is somewhat of a circular dependency because flatc (and thus this
// file) is needed to generate this header in the first place.
// Should normally not be a problem since it can be generated by the
// previous version of flatc whenever this code needs to change.
// See reflection/generate_code.sh
#include "flatbuffers/reflection_generated.h"
// Helper functionality for reflection.
namespace flatbuffers {
// ------------------------- GETTERS -------------------------
inline bool IsScalar(reflection::BaseType t) {
return t >= reflection::UType && t <= reflection::Double;
}
inline bool IsInteger(reflection::BaseType t) {
return t >= reflection::UType && t <= reflection::ULong;
}
inline bool IsFloat(reflection::BaseType t) {
return t == reflection::Float || t == reflection::Double;
}
inline bool IsLong(reflection::BaseType t) {
return t == reflection::Long || t == reflection::ULong;
}
// Size of a basic type, don't use with structs.
inline size_t GetTypeSize(reflection::BaseType base_type) {
// This needs to correspond to the BaseType enum.
static size_t sizes[] = { 0, 1, 1, 1, 1, 2, 2, 4, 4, 8, 8, 4, 8, 4, 4, 4, 4 };
return sizes[base_type];
}
// Same as above, but now correctly returns the size of a struct if
// the field (or vector element) is a struct.
inline size_t GetTypeSizeInline(reflection::BaseType base_type, int type_index,
const reflection::Schema &schema) {
if (base_type == reflection::Obj &&
schema.objects()->Get(type_index)->is_struct()) {
return schema.objects()->Get(type_index)->bytesize();
} else {
return GetTypeSize(base_type);
}
}
// Get the root, regardless of what type it is.
inline Table *GetAnyRoot(uint8_t *flatbuf) {
return GetMutableRoot<Table>(flatbuf);
}
inline const Table *GetAnyRoot(const uint8_t *flatbuf) {
return GetRoot<Table>(flatbuf);
}
// Get a field's default, if you know it's an integer, and its exact type.
template<typename T> T GetFieldDefaultI(const reflection::Field &field) {
FLATBUFFERS_ASSERT(sizeof(T) == GetTypeSize(field.type()->base_type()));
return static_cast<T>(field.default_integer());
}
// Get a field's default, if you know it's floating point and its exact type.
template<typename T> T GetFieldDefaultF(const reflection::Field &field) {
FLATBUFFERS_ASSERT(sizeof(T) == GetTypeSize(field.type()->base_type()));
return static_cast<T>(field.default_real());
}
// Get a field, if you know it's an integer, and its exact type.
template<typename T>
T GetFieldI(const Table &table, const reflection::Field &field) {
FLATBUFFERS_ASSERT(sizeof(T) == GetTypeSize(field.type()->base_type()));
return table.GetField<T>(field.offset(),
static_cast<T>(field.default_integer()));
}
// Get a field, if you know it's floating point and its exact type.
template<typename T>
T GetFieldF(const Table &table, const reflection::Field &field) {
FLATBUFFERS_ASSERT(sizeof(T) == GetTypeSize(field.type()->base_type()));
return table.GetField<T>(field.offset(),
static_cast<T>(field.default_real()));
}
// Get a field, if you know it's a string.
inline const String *GetFieldS(const Table &table,
const reflection::Field &field) {
FLATBUFFERS_ASSERT(field.type()->base_type() == reflection::String);
return table.GetPointer<const String *>(field.offset());
}
// Get a field, if you know it's a vector.
template<typename T>
Vector<T> *GetFieldV(const Table &table, const reflection::Field &field) {
FLATBUFFERS_ASSERT(field.type()->base_type() == reflection::Vector &&
sizeof(T) == GetTypeSize(field.type()->element()));
return table.GetPointer<Vector<T> *>(field.offset());
}
// Get a field, if you know it's a vector, generically.
// To actually access elements, use the return value together with
// field.type()->element() in any of GetAnyVectorElemI below etc.
inline VectorOfAny *GetFieldAnyV(const Table &table,
const reflection::Field &field) {
return table.GetPointer<VectorOfAny *>(field.offset());
}
// Get a field, if you know it's a table.
inline Table *GetFieldT(const Table &table, const reflection::Field &field) {
FLATBUFFERS_ASSERT(field.type()->base_type() == reflection::Obj ||
field.type()->base_type() == reflection::Union);
return table.GetPointer<Table *>(field.offset());
}
// Get a field, if you know it's a struct.
inline const Struct *GetFieldStruct(const Table &table,
const reflection::Field &field) {
// TODO: This does NOT check if the field is a table or struct, but we'd need
// access to the schema to check the is_struct flag.
FLATBUFFERS_ASSERT(field.type()->base_type() == reflection::Obj);
return table.GetStruct<const Struct *>(field.offset());
}
// Get a structure's field, if you know it's a struct.
inline const Struct *GetFieldStruct(const Struct &structure,
const reflection::Field &field) {
FLATBUFFERS_ASSERT(field.type()->base_type() == reflection::Obj);
return structure.GetStruct<const Struct *>(field.offset());
}
// Raw helper functions used below: get any value in memory as a 64bit int, a
// double or a string.
// All scalars get static_cast to an int64_t, strings use strtoull, every other
// data type returns 0.
int64_t GetAnyValueI(reflection::BaseType type, const uint8_t *data);
// All scalars static cast to double, strings use strtod, every other data
// type is 0.0.
double GetAnyValueF(reflection::BaseType type, const uint8_t *data);
// All scalars converted using stringstream, strings as-is, and all other
// data types provide some level of debug-pretty-printing.
std::string GetAnyValueS(reflection::BaseType type, const uint8_t *data,
const reflection::Schema *schema, int type_index);
// Get any table field as a 64bit int, regardless of what type it is.
inline int64_t GetAnyFieldI(const Table &table,
const reflection::Field &field) {
auto field_ptr = table.GetAddressOf(field.offset());
return field_ptr ? GetAnyValueI(field.type()->base_type(), field_ptr)
: field.default_integer();
}
// Get any table field as a double, regardless of what type it is.
inline double GetAnyFieldF(const Table &table, const reflection::Field &field) {
auto field_ptr = table.GetAddressOf(field.offset());
return field_ptr ? GetAnyValueF(field.type()->base_type(), field_ptr)
: field.default_real();
}
// Get any table field as a string, regardless of what type it is.
// You may pass nullptr for the schema if you don't care to have fields that
// are of table type pretty-printed.
inline std::string GetAnyFieldS(const Table &table,
const reflection::Field &field,
const reflection::Schema *schema) {
auto field_ptr = table.GetAddressOf(field.offset());
return field_ptr ? GetAnyValueS(field.type()->base_type(), field_ptr, schema,
field.type()->index())
: "";
}
// Get any struct field as a 64bit int, regardless of what type it is.
inline int64_t GetAnyFieldI(const Struct &st, const reflection::Field &field) {
return GetAnyValueI(field.type()->base_type(),
st.GetAddressOf(field.offset()));
}
// Get any struct field as a double, regardless of what type it is.
inline double GetAnyFieldF(const Struct &st, const reflection::Field &field) {
return GetAnyValueF(field.type()->base_type(),
st.GetAddressOf(field.offset()));
}
// Get any struct field as a string, regardless of what type it is.
inline std::string GetAnyFieldS(const Struct &st,
const reflection::Field &field) {
return GetAnyValueS(field.type()->base_type(),
st.GetAddressOf(field.offset()), nullptr, -1);
}
// Get any vector element as a 64bit int, regardless of what type it is.
inline int64_t GetAnyVectorElemI(const VectorOfAny *vec,
reflection::BaseType elem_type, size_t i) {
return GetAnyValueI(elem_type, vec->Data() + GetTypeSize(elem_type) * i);
}
// Get any vector element as a double, regardless of what type it is.
inline double GetAnyVectorElemF(const VectorOfAny *vec,
reflection::BaseType elem_type, size_t i) {
return GetAnyValueF(elem_type, vec->Data() + GetTypeSize(elem_type) * i);
}
// Get any vector element as a string, regardless of what type it is.
inline std::string GetAnyVectorElemS(const VectorOfAny *vec,
reflection::BaseType elem_type, size_t i) {
return GetAnyValueS(elem_type, vec->Data() + GetTypeSize(elem_type) * i,
nullptr, -1);
}
// Get a vector element that's a table/string/vector from a generic vector.
// Pass Table/String/VectorOfAny as template parameter.
// Warning: does no typechecking.
template<typename T>
T *GetAnyVectorElemPointer(const VectorOfAny *vec, size_t i) {
auto elem_ptr = vec->Data() + sizeof(uoffset_t) * i;
return reinterpret_cast<T*>(elem_ptr + ReadScalar<uoffset_t>(elem_ptr));
}
// Get the inline-address of a vector element. Useful for Structs (pass Struct
// as template arg), or being able to address a range of scalars in-line.
// Get elem_size from GetTypeSizeInline().
// Note: little-endian data on all platforms, use EndianScalar() instead of
// raw pointer access with scalars).
template<typename T>
T *GetAnyVectorElemAddressOf(const VectorOfAny *vec, size_t i,
size_t elem_size) {
return reinterpret_cast<T *>(vec->Data() + elem_size * i);
}
// Similarly, for elements of tables.
template<typename T>
T *GetAnyFieldAddressOf(const Table &table, const reflection::Field &field) {
return reinterpret_cast<T *>(table.GetAddressOf(field.offset()));
}
// Similarly, for elements of structs.
template<typename T>
T *GetAnyFieldAddressOf(const Struct &st, const reflection::Field &field) {
return reinterpret_cast<T *>(st.GetAddressOf(field.offset()));
}
// ------------------------- SETTERS -------------------------
// Set any scalar field, if you know its exact type.
template<typename T>
bool SetField(Table *table, const reflection::Field &field, T val) {
reflection::BaseType type = field.type()->base_type();
if (!IsScalar(type)) { return false; }
FLATBUFFERS_ASSERT(sizeof(T) == GetTypeSize(type));
T def;
if (IsInteger(type)) {
def = GetFieldDefaultI<T>(field);
} else {
FLATBUFFERS_ASSERT(IsFloat(type));
def = GetFieldDefaultF<T>(field);
}
return table->SetField(field.offset(), val, def);
}
// Raw helper functions used below: set any value in memory as a 64bit int, a
// double or a string.
// These work for all scalar values, but do nothing for other data types.
// To set a string, see SetString below.
void SetAnyValueI(reflection::BaseType type, uint8_t *data, int64_t val);
void SetAnyValueF(reflection::BaseType type, uint8_t *data, double val);
void SetAnyValueS(reflection::BaseType type, uint8_t *data, const char *val);
// Set any table field as a 64bit int, regardless of type what it is.
inline bool SetAnyFieldI(Table *table, const reflection::Field &field,
int64_t val) {
auto field_ptr = table->GetAddressOf(field.offset());
if (!field_ptr) return val == GetFieldDefaultI<int64_t>(field);
SetAnyValueI(field.type()->base_type(), field_ptr, val);
return true;
}
// Set any table field as a double, regardless of what type it is.
inline bool SetAnyFieldF(Table *table, const reflection::Field &field,
double val) {
auto field_ptr = table->GetAddressOf(field.offset());
if (!field_ptr) return val == GetFieldDefaultF<double>(field);
SetAnyValueF(field.type()->base_type(), field_ptr, val);
return true;
}
// Set any table field as a string, regardless of what type it is.
inline bool SetAnyFieldS(Table *table, const reflection::Field &field,
const char *val) {
auto field_ptr = table->GetAddressOf(field.offset());
if (!field_ptr) return false;
SetAnyValueS(field.type()->base_type(), field_ptr, val);
return true;
}
// Set any struct field as a 64bit int, regardless of type what it is.
inline void SetAnyFieldI(Struct *st, const reflection::Field &field,
int64_t val) {
SetAnyValueI(field.type()->base_type(), st->GetAddressOf(field.offset()),
val);
}
// Set any struct field as a double, regardless of type what it is.
inline void SetAnyFieldF(Struct *st, const reflection::Field &field,
double val) {
SetAnyValueF(field.type()->base_type(), st->GetAddressOf(field.offset()),
val);
}
// Set any struct field as a string, regardless of type what it is.
inline void SetAnyFieldS(Struct *st, const reflection::Field &field,
const char *val) {
SetAnyValueS(field.type()->base_type(), st->GetAddressOf(field.offset()),
val);
}
// Set any vector element as a 64bit int, regardless of type what it is.
inline void SetAnyVectorElemI(VectorOfAny *vec, reflection::BaseType elem_type,
size_t i, int64_t val) {
SetAnyValueI(elem_type, vec->Data() + GetTypeSize(elem_type) * i, val);
}
// Set any vector element as a double, regardless of type what it is.
inline void SetAnyVectorElemF(VectorOfAny *vec, reflection::BaseType elem_type,
size_t i, double val) {
SetAnyValueF(elem_type, vec->Data() + GetTypeSize(elem_type) * i, val);
}
// Set any vector element as a string, regardless of type what it is.
inline void SetAnyVectorElemS(VectorOfAny *vec, reflection::BaseType elem_type,
size_t i, const char *val) {
SetAnyValueS(elem_type, vec->Data() + GetTypeSize(elem_type) * i, val);
}
// ------------------------- RESIZING SETTERS -------------------------
// "smart" pointer for use with resizing vectors: turns a pointer inside
// a vector into a relative offset, such that it is not affected by resizes.
template<typename T, typename U> class pointer_inside_vector {
public:
pointer_inside_vector(T *ptr, std::vector<U> &vec)
: offset_(reinterpret_cast<uint8_t *>(ptr) -
reinterpret_cast<uint8_t *>(flatbuffers::vector_data(vec))),
vec_(vec) {}
T *operator*() const {
return reinterpret_cast<T *>(
reinterpret_cast<uint8_t *>(flatbuffers::vector_data(vec_)) + offset_);
}
T *operator->() const { return operator*(); }
void operator=(const pointer_inside_vector &piv);
private:
size_t offset_;
std::vector<U> &vec_;
};
// Helper to create the above easily without specifying template args.
template<typename T, typename U>
pointer_inside_vector<T, U> piv(T *ptr, std::vector<U> &vec) {
return pointer_inside_vector<T, U>(ptr, vec);
}
inline const char *UnionTypeFieldSuffix() { return "_type"; }
// Helper to figure out the actual table type a union refers to.
inline const reflection::Object &GetUnionType(
const reflection::Schema &schema, const reflection::Object &parent,
const reflection::Field &unionfield, const Table &table) {
auto enumdef = schema.enums()->Get(unionfield.type()->index());
// TODO: this is clumsy and slow, but no other way to find it?
auto type_field = parent.fields()->LookupByKey(
(unionfield.name()->str() + UnionTypeFieldSuffix()).c_str());
FLATBUFFERS_ASSERT(type_field);
auto union_type = GetFieldI<uint8_t>(table, *type_field);
auto enumval = enumdef->values()->LookupByKey(union_type);
return *enumval->object();
}
// Changes the contents of a string inside a FlatBuffer. FlatBuffer must
// live inside a std::vector so we can resize the buffer if needed.
// "str" must live inside "flatbuf" and may be invalidated after this call.
// If your FlatBuffer's root table is not the schema's root table, you should
// pass in your root_table type as well.
void SetString(const reflection::Schema &schema, const std::string &val,
const String *str, std::vector<uint8_t> *flatbuf,
const reflection::Object *root_table = nullptr);
// Resizes a flatbuffers::Vector inside a FlatBuffer. FlatBuffer must
// live inside a std::vector so we can resize the buffer if needed.
// "vec" must live inside "flatbuf" and may be invalidated after this call.
// If your FlatBuffer's root table is not the schema's root table, you should
// pass in your root_table type as well.
uint8_t *ResizeAnyVector(const reflection::Schema &schema, uoffset_t newsize,
const VectorOfAny *vec, uoffset_t num_elems,
uoffset_t elem_size, std::vector<uint8_t> *flatbuf,
const reflection::Object *root_table = nullptr);
template<typename T>
void ResizeVector(const reflection::Schema &schema, uoffset_t newsize, T val,
const Vector<T> *vec, std::vector<uint8_t> *flatbuf,
const reflection::Object *root_table = nullptr) {
auto delta_elem = static_cast<int>(newsize) - static_cast<int>(vec->size());
auto newelems = ResizeAnyVector(
schema, newsize, reinterpret_cast<const VectorOfAny *>(vec), vec->size(),
static_cast<uoffset_t>(sizeof(T)), flatbuf, root_table);
// Set new elements to "val".
for (int i = 0; i < delta_elem; i++) {
auto loc = newelems + i * sizeof(T);
auto is_scalar = flatbuffers::is_scalar<T>::value;
if (is_scalar) {
WriteScalar(loc, val);
} else { // struct
*reinterpret_cast<T *>(loc) = val;
}
}
}
// Adds any new data (in the form of a new FlatBuffer) to an existing
// FlatBuffer. This can be used when any of the above methods are not
// sufficient, in particular for adding new tables and new fields.
// This is potentially slightly less efficient than a FlatBuffer constructed
// in one piece, since the new FlatBuffer doesn't share any vtables with the
// existing one.
// The return value can now be set using Vector::MutateOffset or SetFieldT
// below.
const uint8_t *AddFlatBuffer(std::vector<uint8_t> &flatbuf,
const uint8_t *newbuf, size_t newlen);
inline bool SetFieldT(Table *table, const reflection::Field &field,
const uint8_t *val) {
FLATBUFFERS_ASSERT(sizeof(uoffset_t) ==
GetTypeSize(field.type()->base_type()));
return table->SetPointer(field.offset(), val);
}
// ------------------------- COPYING -------------------------
// Generic copying of tables from a FlatBuffer into a FlatBuffer builder.
// Can be used to do any kind of merging/selecting you may want to do out
// of existing buffers. Also useful to reconstruct a whole buffer if the
// above resizing functionality has introduced garbage in a buffer you want
// to remove.
// Note: this does not deal with DAGs correctly. If the table passed forms a
// DAG, the copy will be a tree instead (with duplicates). Strings can be
// shared however, by passing true for use_string_pooling.
Offset<const Table *> CopyTable(FlatBufferBuilder &fbb,
const reflection::Schema &schema,
const reflection::Object &objectdef,
const Table &table,
bool use_string_pooling = false);
// Verifies the provided flatbuffer using reflection.
// root should point to the root type for this flatbuffer.
// buf should point to the start of flatbuffer data.
// length specifies the size of the flatbuffer data.
bool Verify(const reflection::Schema &schema, const reflection::Object &root,
const uint8_t *buf, size_t length);
} // namespace flatbuffers
#endif // FLATBUFFERS_REFLECTION_H_
third_party/flatbuffers/include/flatbuffers/reflection_generated.h
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third_party/flatbuffers/include/flatbuffers/registry.h
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/*
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_REGISTRY_H_
#define FLATBUFFERS_REGISTRY_H_
#include "flatbuffers/idl.h"
namespace flatbuffers {
// Convenience class to easily parse or generate text for arbitrary FlatBuffers.
// Simply pre-populate it with all schema filenames that may be in use, and
// This class will look them up using the file_identifier declared in the
// schema.
class Registry {
public:
// Call this for all schemas that may be in use. The identifier has
// a function in the generated code, e.g. MonsterIdentifier().
void Register(const char *file_identifier, const char *schema_path) {
Schema schema;
schema.path_ = schema_path;
schemas_[file_identifier] = schema;
}
// Generate text from an arbitrary FlatBuffer by looking up its
// file_identifier in the registry.
bool FlatBufferToText(const uint8_t *flatbuf, size_t len, std::string *dest) {
// Get the identifier out of the buffer.
// If the buffer is truncated, exit.
if (len < sizeof(uoffset_t) + FlatBufferBuilder::kFileIdentifierLength) {
lasterror_ = "buffer truncated";
return false;
}
std::string ident(
reinterpret_cast<const char *>(flatbuf) + sizeof(uoffset_t),
FlatBufferBuilder::kFileIdentifierLength);
// Load and parse the schema.
Parser parser;
if (!LoadSchema(ident, &parser)) return false;
// Now we're ready to generate text.
if (!GenerateText(parser, flatbuf, dest)) {
lasterror_ = "unable to generate text for FlatBuffer binary";
return false;
}
return true;
}
// Converts a binary buffer to text using one of the schemas in the registry,
// use the file_identifier to indicate which.
// If DetachedBuffer::data() is null then parsing failed.
DetachedBuffer TextToFlatBuffer(const char *text,
const char *file_identifier) {
// Load and parse the schema.
Parser parser;
if (!LoadSchema(file_identifier, &parser)) return DetachedBuffer();
// Parse the text.
if (!parser.Parse(text)) {
lasterror_ = parser.error_;
return DetachedBuffer();
}
// We have a valid FlatBuffer. Detach it from the builder and return.
return parser.builder_.Release();
}
// Modify any parsing / output options used by the other functions.
void SetOptions(const IDLOptions &opts) { opts_ = opts; }
// If schemas used contain include statements, call this function for every
// directory the parser should search them for.
void AddIncludeDirectory(const char *path) { include_paths_.push_back(path); }
// Returns a human readable error if any of the above functions fail.
const std::string &GetLastError() { return lasterror_; }
private:
bool LoadSchema(const std::string &ident, Parser *parser) {
// Find the schema, if not, exit.
auto it = schemas_.find(ident);
if (it == schemas_.end()) {
// Don't attach the identifier, since it may not be human readable.
lasterror_ = "identifier for this buffer not in the registry";
return false;
}
auto &schema = it->second;
// Load the schema from disk. If not, exit.
std::string schematext;
if (!LoadFile(schema.path_.c_str(), false, &schematext)) {
lasterror_ = "could not load schema: " + schema.path_;
return false;
}
// Parse schema.
parser->opts = opts_;
if (!parser->Parse(schematext.c_str(), vector_data(include_paths_),
schema.path_.c_str())) {
lasterror_ = parser->error_;
return false;
}
return true;
}
struct Schema {
std::string path_;
// TODO(wvo) optionally cache schema file or parsed schema here.
};
std::string lasterror_;
IDLOptions opts_;
std::vector<const char *> include_paths_;
std::map<std::string, Schema> schemas_;
};
} // namespace flatbuffers
#endif // FLATBUFFERS_REGISTRY_H_
third_party/flatbuffers/include/flatbuffers/stl_emulation.h
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/*
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_STL_EMULATION_H_
#define FLATBUFFERS_STL_EMULATION_H_
// clang-format off
#include <string>
#include <type_traits>
#include <vector>
#include <memory>
#include <limits>
#if defined(_STLPORT_VERSION) && !defined(FLATBUFFERS_CPP98_STL)
#define FLATBUFFERS_CPP98_STL
#endif // defined(_STLPORT_VERSION) && !defined(FLATBUFFERS_CPP98_STL)
#if defined(FLATBUFFERS_CPP98_STL)
#include <cctype>
#endif // defined(FLATBUFFERS_CPP98_STL)
// Check if we can use template aliases
// Not possible if Microsoft Compiler before 2012
// Possible is the language feature __cpp_alias_templates is defined well
// Or possible if the C++ std is C+11 or newer
#if (defined(_MSC_VER) && _MSC_VER > 1700 /* MSVC2012 */) \
|| (defined(__cpp_alias_templates) && __cpp_alias_templates >= 200704) \
|| (defined(__cplusplus) && __cplusplus >= 201103L)
#define FLATBUFFERS_TEMPLATES_ALIASES
#endif
// This header provides backwards compatibility for C++98 STLs like stlport.
namespace flatbuffers {
// Retrieve ::back() from a string in a way that is compatible with pre C++11
// STLs (e.g stlport).
inline char& string_back(std::string &value) {
return value[value.length() - 1];
}
inline char string_back(const std::string &value) {
return value[value.length() - 1];
}
// Helper method that retrieves ::data() from a vector in a way that is
// compatible with pre C++11 STLs (e.g stlport).
template <typename T> inline T *vector_data(std::vector<T> &vector) {
// In some debug environments, operator[] does bounds checking, so &vector[0]
// can't be used.
return vector.empty() ? nullptr : &vector[0];
}
template <typename T> inline const T *vector_data(
const std::vector<T> &vector) {
return vector.empty() ? nullptr : &vector[0];
}
template <typename T, typename V>
inline void vector_emplace_back(std::vector<T> *vector, V &&data) {
#if defined(FLATBUFFERS_CPP98_STL)
vector->push_back(data);
#else
vector->emplace_back(std::forward<V>(data));
#endif // defined(FLATBUFFERS_CPP98_STL)
}
#ifndef FLATBUFFERS_CPP98_STL
#if defined(FLATBUFFERS_TEMPLATES_ALIASES)
template <typename T>
using numeric_limits = std::numeric_limits<T>;
#else
template <typename T> class numeric_limits :
public std::numeric_limits<T> {};
#endif // defined(FLATBUFFERS_TEMPLATES_ALIASES)
#else
template <typename T> class numeric_limits :
public std::numeric_limits<T> {
public:
// Android NDK fix.
static T lowest() {
return std::numeric_limits<T>::min();
}
};
template <> class numeric_limits<float> :
public std::numeric_limits<float> {
public:
static float lowest() { return -FLT_MAX; }
};
template <> class numeric_limits<double> :
public std::numeric_limits<double> {
public:
static double lowest() { return -DBL_MAX; }
};
template <> class numeric_limits<unsigned long long> {
public:
static unsigned long long min() { return 0ULL; }
static unsigned long long max() { return ~0ULL; }
static unsigned long long lowest() {
return numeric_limits<unsigned long long>::min();
}
};
template <> class numeric_limits<long long> {
public:
static long long min() {
return static_cast<long long>(1ULL << ((sizeof(long long) << 3) - 1));
}
static long long max() {
return static_cast<long long>(
(1ULL << ((sizeof(long long) << 3) - 1)) - 1);
}
static long long lowest() {
return numeric_limits<long long>::min();
}
};
#endif // FLATBUFFERS_CPP98_STL
#if defined(FLATBUFFERS_TEMPLATES_ALIASES)
#ifndef FLATBUFFERS_CPP98_STL
template <typename T> using is_scalar = std::is_scalar<T>;
template <typename T, typename U> using is_same = std::is_same<T,U>;
template <typename T> using is_floating_point = std::is_floating_point<T>;
template <typename T> using is_unsigned = std::is_unsigned<T>;
template <typename T> using make_unsigned = std::make_unsigned<T>;
#else
// Map C++ TR1 templates defined by stlport.
template <typename T> using is_scalar = std::tr1::is_scalar<T>;
template <typename T, typename U> using is_same = std::tr1::is_same<T,U>;
template <typename T> using is_floating_point =
std::tr1::is_floating_point<T>;
template <typename T> using is_unsigned = std::tr1::is_unsigned<T>;
// Android NDK doesn't have std::make_unsigned or std::tr1::make_unsigned.
template<typename T> struct make_unsigned {
static_assert(is_unsigned<T>::value, "Specialization not implemented!");
using type = T;
};
template<> struct make_unsigned<char> { using type = unsigned char; };
template<> struct make_unsigned<short> { using type = unsigned short; };
template<> struct make_unsigned<int> { using type = unsigned int; };
template<> struct make_unsigned<long> { using type = unsigned long; };
template<>
struct make_unsigned<long long> { using type = unsigned long long; };
#endif // !FLATBUFFERS_CPP98_STL
#else
// MSVC 2010 doesn't support C++11 aliases.
template <typename T> struct is_scalar : public std::is_scalar<T> {};
template <typename T, typename U> struct is_same : public std::is_same<T,U> {};
template <typename T> struct is_floating_point :
public std::is_floating_point<T> {};
template <typename T> struct is_unsigned : public std::is_unsigned<T> {};
template <typename T> struct make_unsigned : public std::make_unsigned<T> {};
#endif // defined(FLATBUFFERS_TEMPLATES_ALIASES)
#ifndef FLATBUFFERS_CPP98_STL
#if defined(FLATBUFFERS_TEMPLATES_ALIASES)
template <class T> using unique_ptr = std::unique_ptr<T>;
#else
// MSVC 2010 doesn't support C++11 aliases.
// We're manually "aliasing" the class here as we want to bring unique_ptr
// into the flatbuffers namespace. We have unique_ptr in the flatbuffers
// namespace we have a completely independent implemenation (see below)
// for C++98 STL implementations.
template <class T> class unique_ptr : public std::unique_ptr<T> {
public:
unique_ptr() {}
explicit unique_ptr(T* p) : std::unique_ptr<T>(p) {}
unique_ptr(std::unique_ptr<T>&& u) { *this = std::move(u); }
unique_ptr(unique_ptr&& u) { *this = std::move(u); }
unique_ptr& operator=(std::unique_ptr<T>&& u) {
std::unique_ptr<T>::reset(u.release());
return *this;
}
unique_ptr& operator=(unique_ptr&& u) {
std::unique_ptr<T>::reset(u.release());
return *this;
}
unique_ptr& operator=(T* p) {
return std::unique_ptr<T>::operator=(p);
}
};
#endif // defined(FLATBUFFERS_TEMPLATES_ALIASES)
#else
// Very limited implementation of unique_ptr.
// This is provided simply to allow the C++ code generated from the default
// settings to function in C++98 environments with no modifications.
template <class T> class unique_ptr {
public:
typedef T element_type;
unique_ptr() : ptr_(nullptr) {}
explicit unique_ptr(T* p) : ptr_(p) {}
unique_ptr(unique_ptr&& u) : ptr_(nullptr) { reset(u.release()); }
unique_ptr(const unique_ptr& u) : ptr_(nullptr) {
reset(const_cast<unique_ptr*>(&u)->release());
}
~unique_ptr() { reset(); }
unique_ptr& operator=(const unique_ptr& u) {
reset(const_cast<unique_ptr*>(&u)->release());
return *this;
}
unique_ptr& operator=(unique_ptr&& u) {
reset(u.release());
return *this;
}
unique_ptr& operator=(T* p) {
reset(p);
return *this;
}
const T& operator*() const { return *ptr_; }
T* operator->() const { return ptr_; }
T* get() const noexcept { return ptr_; }
explicit operator bool() const { return ptr_ != nullptr; }
// modifiers
T* release() {
T* value = ptr_;
ptr_ = nullptr;
return value;
}
void reset(T* p = nullptr) {
T* value = ptr_;
ptr_ = p;
if (value) delete value;
}
void swap(unique_ptr& u) {
T* temp_ptr = ptr_;
ptr_ = u.ptr_;
u.ptr_ = temp_ptr;
}
private:
T* ptr_;
};
template <class T> bool operator==(const unique_ptr<T>& x,
const unique_ptr<T>& y) {
return x.get() == y.get();
}
template <class T, class D> bool operator==(const unique_ptr<T>& x,
const D* y) {
return static_cast<D*>(x.get()) == y;
}
template <class T> bool operator==(const unique_ptr<T>& x, intptr_t y) {
return reinterpret_cast<intptr_t>(x.get()) == y;
}
#endif // !FLATBUFFERS_CPP98_STL
} // namespace flatbuffers
#endif // FLATBUFFERS_STL_EMULATION_H_
third_party/flatbuffers/include/flatbuffers/util.h
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/*
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_UTIL_H_
#define FLATBUFFERS_UTIL_H_
#include "flatbuffers/base.h"
#include <errno.h>
#ifndef FLATBUFFERS_PREFER_PRINTF
# include <sstream>
#else // FLATBUFFERS_PREFER_PRINTF
# include <float.h>
# include <stdio.h>
#endif // FLATBUFFERS_PREFER_PRINTF
#include <iomanip>
#include <string>
namespace flatbuffers {
// @locale-independent functions for ASCII characters set.
// Fast checking that character lies in closed range: [a <= x <= b]
// using one compare (conditional branch) operator.
inline bool check_ascii_range(char x, char a, char b) {
FLATBUFFERS_ASSERT(a <= b);
// (Hacker's Delight): `a <= x <= b` <=> `(x-a) <={u} (b-a)`.
// The x, a, b will be promoted to int and subtracted without overflow.
return static_cast<unsigned int>(x - a) <= static_cast<unsigned int>(b - a);
}
// Case-insensitive isalpha
inline bool is_alpha(char c) {
// ASCII only: alpha to upper case => reset bit 0x20 (~0x20 = 0xDF).
return check_ascii_range(c & 0xDF, 'a' & 0xDF, 'z' & 0xDF);
}
// Check (case-insensitive) that `c` is equal to alpha.
inline bool is_alpha_char(char c, char alpha) {
FLATBUFFERS_ASSERT(is_alpha(alpha));
// ASCII only: alpha to upper case => reset bit 0x20 (~0x20 = 0xDF).
return ((c & 0xDF) == (alpha & 0xDF));
}
// https://en.cppreference.com/w/cpp/string/byte/isxdigit
// isdigit and isxdigit are the only standard narrow character classification
// functions that are not affected by the currently installed C locale. although
// some implementations (e.g. Microsoft in 1252 codepage) may classify
// additional single-byte characters as digits.
inline bool is_digit(char c) { return check_ascii_range(c, '0', '9'); }
inline bool is_xdigit(char c) {
// Replace by look-up table.
return is_digit(c) || check_ascii_range(c & 0xDF, 'a' & 0xDF, 'f' & 0xDF);
}
// Case-insensitive isalnum
inline bool is_alnum(char c) { return is_alpha(c) || is_digit(c); }
// @end-locale-independent functions for ASCII character set
#ifdef FLATBUFFERS_PREFER_PRINTF
template<typename T> size_t IntToDigitCount(T t) {
size_t digit_count = 0;
// Count the sign for negative numbers
if (t < 0) digit_count++;
// Count a single 0 left of the dot for fractional numbers
if (-1 < t && t < 1) digit_count++;
// Count digits until fractional part
T eps = std::numeric_limits<float>::epsilon();
while (t <= (-1 + eps) || (1 - eps) <= t) {
t /= 10;
digit_count++;
}
return digit_count;
}
template<typename T> size_t NumToStringWidth(T t, int precision = 0) {
size_t string_width = IntToDigitCount(t);
// Count the dot for floating point numbers
if (precision) string_width += (precision + 1);
return string_width;
}
template<typename T>
std::string NumToStringImplWrapper(T t, const char *fmt, int precision = 0) {
size_t string_width = NumToStringWidth(t, precision);
std::string s(string_width, 0x00);
// Allow snprintf to use std::string trailing null to detect buffer overflow
snprintf(const_cast<char *>(s.data()), (s.size() + 1), fmt, string_width, t);
return s;
}
#endif // FLATBUFFERS_PREFER_PRINTF
// Convert an integer or floating point value to a string.
// In contrast to std::stringstream, "char" values are
// converted to a string of digits, and we don't use scientific notation.
template<typename T> std::string NumToString(T t) {
// clang-format off
#ifndef FLATBUFFERS_PREFER_PRINTF
std::stringstream ss;
ss << t;
return ss.str();
#else // FLATBUFFERS_PREFER_PRINTF
auto v = static_cast<long long>(t);
return NumToStringImplWrapper(v, "%.*lld");
#endif // FLATBUFFERS_PREFER_PRINTF
// clang-format on
}
// Avoid char types used as character data.
template<> inline std::string NumToString<signed char>(signed char t) {
return NumToString(static_cast<int>(t));
}
template<> inline std::string NumToString<unsigned char>(unsigned char t) {
return NumToString(static_cast<int>(t));
}
template<> inline std::string NumToString<char>(char t) {
return NumToString(static_cast<int>(t));
}
#if defined(FLATBUFFERS_CPP98_STL)
template<> inline std::string NumToString<long long>(long long t) {
char buf[21]; // (log((1 << 63) - 1) / log(10)) + 2
snprintf(buf, sizeof(buf), "%lld", t);
return std::string(buf);
}
template<>
inline std::string NumToString<unsigned long long>(unsigned long long t) {
char buf[22]; // (log((1 << 63) - 1) / log(10)) + 1
snprintf(buf, sizeof(buf), "%llu", t);
return std::string(buf);
}
#endif // defined(FLATBUFFERS_CPP98_STL)
// Special versions for floats/doubles.
template<typename T> std::string FloatToString(T t, int precision) {
// clang-format off
#ifndef FLATBUFFERS_PREFER_PRINTF
// to_string() prints different numbers of digits for floats depending on
// platform and isn't available on Android, so we use stringstream
std::stringstream ss;
// Use std::fixed to suppress scientific notation.
ss << std::fixed;
// Default precision is 6, we want that to be higher for doubles.
ss << std::setprecision(precision);
ss << t;
auto s = ss.str();
#else // FLATBUFFERS_PREFER_PRINTF
auto v = static_cast<double>(t);
auto s = NumToStringImplWrapper(v, "%0.*f", precision);
#endif // FLATBUFFERS_PREFER_PRINTF
// clang-format on
// Sadly, std::fixed turns "1" into "1.00000", so here we undo that.
auto p = s.find_last_not_of('0');
if (p != std::string::npos) {
// Strip trailing zeroes. If it is a whole number, keep one zero.
s.resize(p + (s[p] == '.' ? 2 : 1));
}
return s;
}
template<> inline std::string NumToString<double>(double t) {
return FloatToString(t, 12);
}
template<> inline std::string NumToString<float>(float t) {
return FloatToString(t, 6);
}
// Convert an integer value to a hexadecimal string.
// The returned string length is always xdigits long, prefixed by 0 digits.
// For example, IntToStringHex(0x23, 8) returns the string "00000023".
inline std::string IntToStringHex(int i, int xdigits) {
FLATBUFFERS_ASSERT(i >= 0);
// clang-format off
#ifndef FLATBUFFERS_PREFER_PRINTF
std::stringstream ss;
ss << std::setw(xdigits) << std::setfill('0') << std::hex << std::uppercase
<< i;
return ss.str();
#else // FLATBUFFERS_PREFER_PRINTF
return NumToStringImplWrapper(i, "%.*X", xdigits);
#endif // FLATBUFFERS_PREFER_PRINTF
// clang-format on
}
// clang-format off
// Use locale independent functions {strtod_l, strtof_l, strtoll_l, strtoull_l}.
#if defined(FLATBUFFERS_LOCALE_INDEPENDENT) && (FLATBUFFERS_LOCALE_INDEPENDENT > 0)
class ClassicLocale {
#ifdef _MSC_VER
typedef _locale_t locale_type;
#else
typedef locale_t locale_type; // POSIX.1-2008 locale_t type
#endif
ClassicLocale();
~ClassicLocale();
locale_type locale_;
static ClassicLocale instance_;
public:
static locale_type Get() { return instance_.locale_; }
};
#ifdef _MSC_VER
#define __strtoull_impl(s, pe, b) _strtoui64_l(s, pe, b, ClassicLocale::Get())
#define __strtoll_impl(s, pe, b) _strtoi64_l(s, pe, b, ClassicLocale::Get())
#define __strtod_impl(s, pe) _strtod_l(s, pe, ClassicLocale::Get())
#define __strtof_impl(s, pe) _strtof_l(s, pe, ClassicLocale::Get())
#else
#define __strtoull_impl(s, pe, b) strtoull_l(s, pe, b, ClassicLocale::Get())
#define __strtoll_impl(s, pe, b) strtoll_l(s, pe, b, ClassicLocale::Get())
#define __strtod_impl(s, pe) strtod_l(s, pe, ClassicLocale::Get())
#define __strtof_impl(s, pe) strtof_l(s, pe, ClassicLocale::Get())
#endif
#else
#define __strtod_impl(s, pe) strtod(s, pe)
#define __strtof_impl(s, pe) static_cast<float>(strtod(s, pe))
#ifdef _MSC_VER
#define __strtoull_impl(s, pe, b) _strtoui64(s, pe, b)
#define __strtoll_impl(s, pe, b) _strtoi64(s, pe, b)
#else
#define __strtoull_impl(s, pe, b) strtoull(s, pe, b)
#define __strtoll_impl(s, pe, b) strtoll(s, pe, b)
#endif
#endif
inline void strtoval_impl(int64_t *val, const char *str, char **endptr,
int base) {
*val = __strtoll_impl(str, endptr, base);
}
inline void strtoval_impl(uint64_t *val, const char *str, char **endptr,
int base) {
*val = __strtoull_impl(str, endptr, base);
}
inline void strtoval_impl(double *val, const char *str, char **endptr) {
*val = __strtod_impl(str, endptr);
}
// UBSAN: double to float is safe if numeric_limits<float>::is_iec559 is true.
__supress_ubsan__("float-cast-overflow")
inline void strtoval_impl(float *val, const char *str, char **endptr) {
*val = __strtof_impl(str, endptr);
}
#undef __strtoull_impl
#undef __strtoll_impl
#undef __strtod_impl
#undef __strtof_impl
// clang-format on
// Adaptor for strtoull()/strtoll().
// Flatbuffers accepts numbers with any count of leading zeros (-009 is -9),
// while strtoll with base=0 interprets first leading zero as octal prefix.
// In future, it is possible to add prefixed 0b0101.
// 1) Checks errno code for overflow condition (out of range).
// 2) If base <= 0, function try to detect base of number by prefix.
//
// Return value (like strtoull and strtoll, but reject partial result):
// - If successful, an integer value corresponding to the str is returned.
// - If full string conversion can't be performed, 0 is returned.
// - If the converted value falls out of range of corresponding return type, a
// range error occurs. In this case value MAX(T)/MIN(T) is returned.
template<typename T>
inline bool StringToIntegerImpl(T *val, const char *const str,
const int base = 0,
const bool check_errno = true) {
// T is int64_t or uint64_T
FLATBUFFERS_ASSERT(str);
if (base <= 0) {
auto s = str;
while (*s && !is_digit(*s)) s++;
if (s[0] == '0' && is_alpha_char(s[1], 'X'))
return StringToIntegerImpl(val, str, 16, check_errno);
// if a prefix not match, try base=10
return StringToIntegerImpl(val, str, 10, check_errno);
} else {
if (check_errno) errno = 0; // clear thread-local errno
auto endptr = str;
strtoval_impl(val, str, const_cast<char **>(&endptr), base);
if ((*endptr != '\0') || (endptr == str)) {
*val = 0; // erase partial result
return false; // invalid string
}
// errno is out-of-range, return MAX/MIN
if (check_errno && errno) return false;
return true;
}
}
template<typename T>
inline bool StringToFloatImpl(T *val, const char *const str) {
// Type T must be either float or double.
FLATBUFFERS_ASSERT(str && val);
auto end = str;
strtoval_impl(val, str, const_cast<char **>(&end));
auto done = (end != str) && (*end == '\0');
if (!done) *val = 0; // erase partial result
return done;
}
// Convert a string to an instance of T.
// Return value (matched with StringToInteger64Impl and strtod):
// - If successful, a numeric value corresponding to the str is returned.
// - If full string conversion can't be performed, 0 is returned.
// - If the converted value falls out of range of corresponding return type, a
// range error occurs. In this case value MAX(T)/MIN(T) is returned.
template<typename T> inline bool StringToNumber(const char *s, T *val) {
FLATBUFFERS_ASSERT(s && val);
int64_t i64;
// The errno check isn't needed, will return MAX/MIN on overflow.
if (StringToIntegerImpl(&i64, s, 0, false)) {
const int64_t max = (flatbuffers::numeric_limits<T>::max)();
const int64_t min = flatbuffers::numeric_limits<T>::lowest();
if (i64 > max) {
*val = static_cast<T>(max);
return false;
}
if (i64 < min) {
// For unsigned types return max to distinguish from
// "no conversion can be performed" when 0 is returned.
*val = static_cast<T>(flatbuffers::is_unsigned<T>::value ? max : min);
return false;
}
*val = static_cast<T>(i64);
return true;
}
*val = 0;
return false;
}
template<> inline bool StringToNumber<int64_t>(const char *str, int64_t *val) {
return StringToIntegerImpl(val, str);
}
template<>
inline bool StringToNumber<uint64_t>(const char *str, uint64_t *val) {
if (!StringToIntegerImpl(val, str)) return false;
// The strtoull accepts negative numbers:
// If the minus sign was part of the input sequence, the numeric value
// calculated from the sequence of digits is negated as if by unary minus
// in the result type, which applies unsigned integer wraparound rules.
// Fix this behaviour (except -0).
if (*val) {
auto s = str;
while (*s && !is_digit(*s)) s++;
s = (s > str) ? (s - 1) : s; // step back to one symbol
if (*s == '-') {
// For unsigned types return the max to distinguish from
// "no conversion can be performed".
*val = (flatbuffers::numeric_limits<uint64_t>::max)();
return false;
}
}
return true;
}
template<> inline bool StringToNumber(const char *s, float *val) {
return StringToFloatImpl(val, s);
}
template<> inline bool StringToNumber(const char *s, double *val) {
return StringToFloatImpl(val, s);
}
inline int64_t StringToInt(const char *s, int base = 10) {
int64_t val;
return StringToIntegerImpl(&val, s, base) ? val : 0;
}
inline uint64_t StringToUInt(const char *s, int base = 10) {
uint64_t val;
return StringToIntegerImpl(&val, s, base) ? val : 0;
}
typedef bool (*LoadFileFunction)(const char *filename, bool binary,
std::string *dest);
typedef bool (*FileExistsFunction)(const char *filename);
LoadFileFunction SetLoadFileFunction(LoadFileFunction load_file_function);
FileExistsFunction SetFileExistsFunction(
FileExistsFunction file_exists_function);
// Check if file "name" exists.
bool FileExists(const char *name);
// Check if "name" exists and it is also a directory.
bool DirExists(const char *name);
// Load file "name" into "buf" returning true if successful
// false otherwise. If "binary" is false data is read
// using ifstream's text mode, otherwise data is read with
// no transcoding.
bool LoadFile(const char *name, bool binary, std::string *buf);
// Save data "buf" of length "len" bytes into a file
// "name" returning true if successful, false otherwise.
// If "binary" is false data is written using ifstream's
// text mode, otherwise data is written with no
// transcoding.
bool SaveFile(const char *name, const char *buf, size_t len, bool binary);
// Save data "buf" into file "name" returning true if
// successful, false otherwise. If "binary" is false
// data is written using ifstream's text mode, otherwise
// data is written with no transcoding.
inline bool SaveFile(const char *name, const std::string &buf, bool binary) {
return SaveFile(name, buf.c_str(), buf.size(), binary);
}
// Functionality for minimalistic portable path handling.
// The functions below behave correctly regardless of whether posix ('/') or
// Windows ('/' or '\\') separators are used.
// Any new separators inserted are always posix.
FLATBUFFERS_CONSTEXPR char kPathSeparator = '/';
// Returns the path with the extension, if any, removed.
std::string StripExtension(const std::string &filepath);
// Returns the extension, if any.
std::string GetExtension(const std::string &filepath);
// Return the last component of the path, after the last separator.
std::string StripPath(const std::string &filepath);
// Strip the last component of the path + separator.
std::string StripFileName(const std::string &filepath);
// Concatenates a path with a filename, regardless of wether the path
// ends in a separator or not.
std::string ConCatPathFileName(const std::string &path,
const std::string &filename);
// Replaces any '\\' separators with '/'
std::string PosixPath(const char *path);
// This function ensure a directory exists, by recursively
// creating dirs for any parts of the path that don't exist yet.
void EnsureDirExists(const std::string &filepath);
// Obtains the absolute path from any other path.
// Returns the input path if the absolute path couldn't be resolved.
std::string AbsolutePath(const std::string &filepath);
// To and from UTF-8 unicode conversion functions
// Convert a unicode code point into a UTF-8 representation by appending it
// to a string. Returns the number of bytes generated.
inline int ToUTF8(uint32_t ucc, std::string *out) {
FLATBUFFERS_ASSERT(!(ucc & 0x80000000)); // Top bit can't be set.
// 6 possible encodings: http://en.wikipedia.org/wiki/UTF-8
for (int i = 0; i < 6; i++) {
// Max bits this encoding can represent.
uint32_t max_bits = 6 + i * 5 + static_cast<int>(!i);
if (ucc < (1u << max_bits)) { // does it fit?
// Remaining bits not encoded in the first byte, store 6 bits each
uint32_t remain_bits = i * 6;
// Store first byte:
(*out) += static_cast<char>((0xFE << (max_bits - remain_bits)) |
(ucc >> remain_bits));
// Store remaining bytes:
for (int j = i - 1; j >= 0; j--) {
(*out) += static_cast<char>(((ucc >> (j * 6)) & 0x3F) | 0x80);
}
return i + 1; // Return the number of bytes added.
}
}
FLATBUFFERS_ASSERT(0); // Impossible to arrive here.
return -1;
}
// Converts whatever prefix of the incoming string corresponds to a valid
// UTF-8 sequence into a unicode code. The incoming pointer will have been
// advanced past all bytes parsed.
// returns -1 upon corrupt UTF-8 encoding (ignore the incoming pointer in
// this case).
inline int FromUTF8(const char **in) {
int len = 0;
// Count leading 1 bits.
for (int mask = 0x80; mask >= 0x04; mask >>= 1) {
if (**in & mask) {
len++;
} else {
break;
}
}
if ((static_cast<unsigned char>(**in) << len) & 0x80)
return -1; // Bit after leading 1's must be 0.
if (!len) return *(*in)++;
// UTF-8 encoded values with a length are between 2 and 4 bytes.
if (len < 2 || len > 4) { return -1; }
// Grab initial bits of the code.
int ucc = *(*in)++ & ((1 << (7 - len)) - 1);
for (int i = 0; i < len - 1; i++) {
if ((**in & 0xC0) != 0x80) return -1; // Upper bits must 1 0.
ucc <<= 6;
ucc |= *(*in)++ & 0x3F; // Grab 6 more bits of the code.
}
// UTF-8 cannot encode values between 0xD800 and 0xDFFF (reserved for
// UTF-16 surrogate pairs).
if (ucc >= 0xD800 && ucc <= 0xDFFF) { return -1; }
// UTF-8 must represent code points in their shortest possible encoding.
switch (len) {
case 2:
// Two bytes of UTF-8 can represent code points from U+0080 to U+07FF.
if (ucc < 0x0080 || ucc > 0x07FF) { return -1; }
break;
case 3:
// Three bytes of UTF-8 can represent code points from U+0800 to U+FFFF.
if (ucc < 0x0800 || ucc > 0xFFFF) { return -1; }
break;
case 4:
// Four bytes of UTF-8 can represent code points from U+10000 to U+10FFFF.
if (ucc < 0x10000 || ucc > 0x10FFFF) { return -1; }
break;
}
return ucc;
}
#ifndef FLATBUFFERS_PREFER_PRINTF
// Wraps a string to a maximum length, inserting new lines where necessary. Any
// existing whitespace will be collapsed down to a single space. A prefix or
// suffix can be provided, which will be inserted before or after a wrapped
// line, respectively.
inline std::string WordWrap(const std::string in, size_t max_length,
const std::string wrapped_line_prefix,
const std::string wrapped_line_suffix) {
std::istringstream in_stream(in);
std::string wrapped, line, word;
in_stream >> word;
line = word;
while (in_stream >> word) {
if ((line.length() + 1 + word.length() + wrapped_line_suffix.length()) <
max_length) {
line += " " + word;
} else {
wrapped += line + wrapped_line_suffix + "\n";
line = wrapped_line_prefix + word;
}
}
wrapped += line;
return wrapped;
}
#endif // !FLATBUFFERS_PREFER_PRINTF
inline bool EscapeString(const char *s, size_t length, std::string *_text,
bool allow_non_utf8, bool natural_utf8) {
std::string &text = *_text;
text += "\"";
for (uoffset_t i = 0; i < length; i++) {
char c = s[i];
switch (c) {
case '\n': text += "\\n"; break;
case '\t': text += "\\t"; break;
case '\r': text += "\\r"; break;
case '\b': text += "\\b"; break;
case '\f': text += "\\f"; break;
case '\"': text += "\\\""; break;
case '\\': text += "\\\\"; break;
default:
if (c >= ' ' && c <= '~') {
text += c;
} else {
// Not printable ASCII data. Let's see if it's valid UTF-8 first:
const char *utf8 = s + i;
int ucc = FromUTF8(&utf8);
if (ucc < 0) {
if (allow_non_utf8) {
text += "\\x";
text += IntToStringHex(static_cast<uint8_t>(c), 2);
} else {
// There are two cases here:
//
// 1) We reached here by parsing an IDL file. In that case,
// we previously checked for non-UTF-8, so we shouldn't reach
// here.
//
// 2) We reached here by someone calling GenerateText()
// on a previously-serialized flatbuffer. The data might have
// non-UTF-8 Strings, or might be corrupt.
//
// In both cases, we have to give up and inform the caller
// they have no JSON.
return false;
}
} else {
if (natural_utf8) {
// utf8 points to past all utf-8 bytes parsed
text.append(s + i, static_cast<size_t>(utf8 - s - i));
} else if (ucc <= 0xFFFF) {
// Parses as Unicode within JSON's \uXXXX range, so use that.
text += "\\u";
text += IntToStringHex(ucc, 4);
} else if (ucc <= 0x10FFFF) {
// Encode Unicode SMP values to a surrogate pair using two \u
// escapes.
uint32_t base = ucc - 0x10000;
auto high_surrogate = (base >> 10) + 0xD800;
auto low_surrogate = (base & 0x03FF) + 0xDC00;
text += "\\u";
text += IntToStringHex(high_surrogate, 4);
text += "\\u";
text += IntToStringHex(low_surrogate, 4);
}
// Skip past characters recognized.
i = static_cast<uoffset_t>(utf8 - s - 1);
}
}
break;
}
}
text += "\"";
return true;
}
// Remove paired quotes in a string: "text"|'text' -> text.
std::string RemoveStringQuotes(const std::string &s);
// Change th global C-locale to locale with name <locale_name>.
// Returns an actual locale name in <_value>, useful if locale_name is "" or
// null.
bool SetGlobalTestLocale(const char *locale_name,
std::string *_value = nullptr);
// Read (or test) a value of environment variable.
bool ReadEnvironmentVariable(const char *var_name,
std::string *_value = nullptr);
// MSVC specific: Send all assert reports to STDOUT to prevent CI hangs.
void SetupDefaultCRTReportMode();
} // namespace flatbuffers
#endif // FLATBUFFERS_UTIL_H_