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author | qrort <qrort@yandex-team.com> | 2022-11-30 23:47:12 +0300 |
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committer | qrort <qrort@yandex-team.com> | 2022-11-30 23:47:12 +0300 |
commit | 22f8ae0e3f5d68b92aecccdf96c1d841a0334311 (patch) | |
tree | bffa27765faf54126ad44bcafa89fadecb7a73d7 /contrib/libs/flatbuffers/src/code_generators.cpp | |
parent | 332b99e2173f0425444abb759eebcb2fafaa9209 (diff) | |
download | ydb-22f8ae0e3f5d68b92aecccdf96c1d841a0334311.tar.gz |
validate canons without yatest_common
Diffstat (limited to 'contrib/libs/flatbuffers/src/code_generators.cpp')
-rw-r--r-- | contrib/libs/flatbuffers/src/code_generators.cpp | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/contrib/libs/flatbuffers/src/code_generators.cpp b/contrib/libs/flatbuffers/src/code_generators.cpp new file mode 100644 index 0000000000..745406ba95 --- /dev/null +++ b/contrib/libs/flatbuffers/src/code_generators.cpp @@ -0,0 +1,395 @@ +/* + * Copyright 2016 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 "flatbuffers/code_generators.h" + +#include <assert.h> + +#include <cmath> + +#include "flatbuffers/base.h" +#include "flatbuffers/util.h" + +#if defined(_MSC_VER) +# pragma warning(push) +# pragma warning(disable : 4127) // C4127: conditional expression is constant +#endif + +namespace flatbuffers { + +void CodeWriter::operator+=(std::string text) { + if (!ignore_ident_ && !text.empty()) AppendIdent(stream_); + + while (true) { + auto begin = text.find("{{"); + if (begin == std::string::npos) { break; } + + auto end = text.find("}}"); + if (end == std::string::npos || end < begin) { break; } + + // Write all the text before the first {{ into the stream. + stream_.write(text.c_str(), begin); + + // The key is between the {{ and }}. + const std::string key = text.substr(begin + 2, end - begin - 2); + + // Find the value associated with the key. If it exists, write the + // value into the stream, otherwise write the key itself into the stream. + auto iter = value_map_.find(key); + if (iter != value_map_.end()) { + const std::string &value = iter->second; + stream_ << value; + } else { + FLATBUFFERS_ASSERT(false && "could not find key"); + stream_ << key; + } + + // Update the text to everything after the }}. + text = text.substr(end + 2); + } + if (!text.empty() && string_back(text) == '\\') { + text.pop_back(); + ignore_ident_ = true; + stream_ << text; + } else { + ignore_ident_ = false; + stream_ << text << std::endl; + } +} + +void CodeWriter::AppendIdent(std::stringstream &stream) { + int lvl = cur_ident_lvl_; + while (lvl--) { + stream.write(pad_.c_str(), static_cast<std::streamsize>(pad_.size())); + } +} + +const char *BaseGenerator::FlatBuffersGeneratedWarning() { + return "automatically generated by the FlatBuffers compiler," + " do not modify"; +} + +std::string BaseGenerator::NamespaceDir(const Parser &parser, + const std::string &path, + const Namespace &ns, + const bool dasherize) { + EnsureDirExists(path); + if (parser.opts.one_file) return path; + std::string namespace_dir = path; // Either empty or ends in separator. + auto &namespaces = ns.components; + for (auto it = namespaces.begin(); it != namespaces.end(); ++it) { + namespace_dir += !dasherize ? *it : ToDasherizedCase(*it); + namespace_dir += kPathSeparator; + EnsureDirExists(namespace_dir); + } + return namespace_dir; +} + +std::string BaseGenerator::NamespaceDir(const Namespace &ns, + const bool dasherize) const { + return BaseGenerator::NamespaceDir(parser_, path_, ns, dasherize); +} + +std::string BaseGenerator::ToDasherizedCase(const std::string pascal_case) { + std::string dasherized_case; + char p = 0; + for (size_t i = 0; i < pascal_case.length(); i++) { + char const &c = pascal_case[i]; + if (is_alpha_upper(c)) { + if (i > 0 && p != kPathSeparator) dasherized_case += "-"; + dasherized_case += CharToLower(c); + } else { + dasherized_case += c; + } + p = c; + } + return dasherized_case; +} + +std::string BaseGenerator::FullNamespace(const char *separator, + const Namespace &ns) { + std::string namespace_name; + auto &namespaces = ns.components; + for (auto it = namespaces.begin(); it != namespaces.end(); ++it) { + if (namespace_name.length()) namespace_name += separator; + namespace_name += *it; + } + return namespace_name; +} + +std::string BaseGenerator::LastNamespacePart(const Namespace &ns) { + if (!ns.components.empty()) + return ns.components.back(); + else + return std::string(""); +} + +// Ensure that a type is prefixed with its namespace. +std::string BaseGenerator::WrapInNameSpace(const Namespace *ns, + const std::string &name) const { + std::string qualified_name = qualifying_start_; + for (auto it = ns->components.begin(); it != ns->components.end(); ++it) + qualified_name += *it + qualifying_separator_; + return qualified_name + name; +} + +std::string BaseGenerator::WrapInNameSpace(const Definition &def) const { + return WrapInNameSpace(def.defined_namespace, def.name); +} + +std::string BaseGenerator::GetNameSpace(const Definition &def) const { + const Namespace *ns = def.defined_namespace; + if (CurrentNameSpace() == ns) return ""; + std::string qualified_name = qualifying_start_; + for (auto it = ns->components.begin(); it != ns->components.end(); ++it) { + qualified_name += *it; + if ((it + 1) != ns->components.end()) { + qualified_name += qualifying_separator_; + } + } + + return qualified_name; +} + +std::string BaseGenerator::GeneratedFileName(const std::string &path, + const std::string &file_name, + const IDLOptions &options) const { + return path + file_name + options.filename_suffix + "." + + (options.filename_extension.empty() ? default_extension_ + : options.filename_extension); +} + +// Generate a documentation comment, if available. +void GenComment(const std::vector<std::string> &dc, std::string *code_ptr, + const CommentConfig *config, const char *prefix) { + if (dc.begin() == dc.end()) { + // Don't output empty comment blocks with 0 lines of comment content. + return; + } + + std::string &code = *code_ptr; + if (config != nullptr && config->first_line != nullptr) { + code += std::string(prefix) + std::string(config->first_line) + "\n"; + } + std::string line_prefix = + std::string(prefix) + + ((config != nullptr && config->content_line_prefix != nullptr) + ? config->content_line_prefix + : "///"); + for (auto it = dc.begin(); it != dc.end(); ++it) { + code += line_prefix + *it + "\n"; + } + if (config != nullptr && config->last_line != nullptr) { + code += std::string(prefix) + std::string(config->last_line) + "\n"; + } +} + +template<typename T> +std::string FloatConstantGenerator::GenFloatConstantImpl( + const FieldDef &field) const { + const auto &constant = field.value.constant; + T v; + auto done = StringToNumber(constant.c_str(), &v); + FLATBUFFERS_ASSERT(done); + if (done) { +#if (!defined(_MSC_VER) || (_MSC_VER >= 1800)) + if (std::isnan(v)) return NaN(v); + if (std::isinf(v)) return Inf(v); +#endif + return Value(v, constant); + } + return "#"; // compile time error +} + +std::string FloatConstantGenerator::GenFloatConstant( + const FieldDef &field) const { + switch (field.value.type.base_type) { + case BASE_TYPE_FLOAT: return GenFloatConstantImpl<float>(field); + case BASE_TYPE_DOUBLE: return GenFloatConstantImpl<double>(field); + default: { + FLATBUFFERS_ASSERT(false); + return "INVALID_BASE_TYPE"; + } + }; +} + +TypedFloatConstantGenerator::TypedFloatConstantGenerator( + const char *double_prefix, const char *single_prefix, + const char *nan_number, const char *pos_inf_number, + const char *neg_inf_number) + : double_prefix_(double_prefix), + single_prefix_(single_prefix), + nan_number_(nan_number), + pos_inf_number_(pos_inf_number), + neg_inf_number_(neg_inf_number) {} + +std::string TypedFloatConstantGenerator::MakeNaN( + const std::string &prefix) const { + return prefix + nan_number_; +} +std::string TypedFloatConstantGenerator::MakeInf( + bool neg, const std::string &prefix) const { + if (neg) + return !neg_inf_number_.empty() ? (prefix + neg_inf_number_) + : ("-" + prefix + pos_inf_number_); + else + return prefix + pos_inf_number_; +} + +std::string TypedFloatConstantGenerator::Value(double v, + const std::string &src) const { + (void)v; + return src; +} + +std::string TypedFloatConstantGenerator::Inf(double v) const { + return MakeInf(v < 0, double_prefix_); +} + +std::string TypedFloatConstantGenerator::NaN(double v) const { + (void)v; + return MakeNaN(double_prefix_); +} + +std::string TypedFloatConstantGenerator::Value(float v, + const std::string &src) const { + (void)v; + return src + "f"; +} + +std::string TypedFloatConstantGenerator::Inf(float v) const { + return MakeInf(v < 0, single_prefix_); +} + +std::string TypedFloatConstantGenerator::NaN(float v) const { + (void)v; + return MakeNaN(single_prefix_); +} + +SimpleFloatConstantGenerator::SimpleFloatConstantGenerator( + const char *nan_number, const char *pos_inf_number, + const char *neg_inf_number) + : nan_number_(nan_number), + pos_inf_number_(pos_inf_number), + neg_inf_number_(neg_inf_number) {} + +std::string SimpleFloatConstantGenerator::Value(double v, + const std::string &src) const { + (void)v; + return src; +} + +std::string SimpleFloatConstantGenerator::Inf(double v) const { + return (v < 0) ? neg_inf_number_ : pos_inf_number_; +} + +std::string SimpleFloatConstantGenerator::NaN(double v) const { + (void)v; + return nan_number_; +} + +std::string SimpleFloatConstantGenerator::Value(float v, + const std::string &src) const { + return this->Value(static_cast<double>(v), src); +} + +std::string SimpleFloatConstantGenerator::Inf(float v) const { + return this->Inf(static_cast<double>(v)); +} + +std::string SimpleFloatConstantGenerator::NaN(float v) const { + return this->NaN(static_cast<double>(v)); +} + +std::string JavaCSharpMakeRule(const Parser &parser, const std::string &path, + const std::string &file_name) { + FLATBUFFERS_ASSERT(parser.opts.lang == IDLOptions::kJava || + parser.opts.lang == IDLOptions::kCSharp); + + std::string file_extension = + (parser.opts.lang == IDLOptions::kJava) ? ".java" : ".cs"; + + std::string make_rule; + + for (auto it = parser.enums_.vec.begin(); it != parser.enums_.vec.end(); + ++it) { + auto &enum_def = **it; + if (!make_rule.empty()) make_rule += " "; + std::string directory = + BaseGenerator::NamespaceDir(parser, path, *enum_def.defined_namespace); + make_rule += directory + enum_def.name + file_extension; + } + + for (auto it = parser.structs_.vec.begin(); it != parser.structs_.vec.end(); + ++it) { + auto &struct_def = **it; + if (!make_rule.empty()) make_rule += " "; + std::string directory = BaseGenerator::NamespaceDir( + parser, path, *struct_def.defined_namespace); + make_rule += directory + struct_def.name + file_extension; + } + + make_rule += ": "; + auto included_files = parser.GetIncludedFilesRecursive(file_name); + for (auto it = included_files.begin(); it != included_files.end(); ++it) { + make_rule += " " + *it; + } + return make_rule; +} + +std::string BinaryFileName(const Parser &parser, const std::string &path, + const std::string &file_name) { + auto ext = parser.file_extension_.length() ? parser.file_extension_ : "bin"; + return path + file_name + "." + ext; +} + +bool GenerateBinary(const Parser &parser, const std::string &path, + const std::string &file_name) { + if (parser.opts.use_flexbuffers) { + auto data_vec = parser.flex_builder_.GetBuffer(); + auto data_ptr = reinterpret_cast<char *>(data(data_vec)); + return !parser.flex_builder_.GetSize() || + flatbuffers::SaveFile( + BinaryFileName(parser, path, file_name).c_str(), data_ptr, + parser.flex_builder_.GetSize(), true); + } + return !parser.builder_.GetSize() || + flatbuffers::SaveFile( + BinaryFileName(parser, path, file_name).c_str(), + reinterpret_cast<char *>(parser.builder_.GetBufferPointer()), + parser.builder_.GetSize(), true); +} + +std::string BinaryMakeRule(const Parser &parser, const std::string &path, + const std::string &file_name) { + if (!parser.builder_.GetSize()) return ""; + std::string filebase = + flatbuffers::StripPath(flatbuffers::StripExtension(file_name)); + std::string make_rule = + BinaryFileName(parser, path, filebase) + ": " + file_name; + auto included_files = + parser.GetIncludedFilesRecursive(parser.root_struct_def_->file); + for (auto it = included_files.begin(); it != included_files.end(); ++it) { + make_rule += " " + *it; + } + return make_rule; +} + +} // namespace flatbuffers + +#if defined(_MSC_VER) +# pragma warning(pop) +#endif |