intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 261 insertions, 0 deletions

diff --git a/contrib/libs/protoc/src/google/protobuf/compiler/objectivec/objectivec_enum.cc b/contrib/libs/protoc/src/google/protobuf/compiler/objectivec/objectivec_enum.cc
new file mode 100644
index 00000000000..8149a47c836
--- /dev/null
+++ b/contrib/libs/protoc/src/google/protobuf/compiler/objectivec/objectivec_enum.cc
@@ -0,0 +1,261 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <map>
+#include <string>
+
+#include <google/protobuf/compiler/objectivec/objectivec_enum.h>
+#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/stubs/strutil.h>
+#include <algorithm> // std::find()
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace objectivec {
+
+EnumGenerator::EnumGenerator(const EnumDescriptor* descriptor)
+    : descriptor_(descriptor),
+      name_(EnumName(descriptor_)) {
+  // Track the names for the enum values, and if an alias overlaps a base
+  // value, skip making a name for it. Likewise if two alias overlap, the
+  // first one wins.
+  // The one gap in this logic is if two base values overlap, but for that
+  // to happen you have to have "Foo" and "FOO" or "FOO_BAR" and "FooBar",
+  // and if an enum has that, it is already going to be confusing and a
+  // compile error is just fine.
+  // The values are still tracked to support the reflection apis and
+  // TextFormat handing since they are different there.
+  std::set<TProtoStringType> value_names;
+
+  for (int i = 0; i < descriptor_->value_count(); i++) {
+    const EnumValueDescriptor* value = descriptor_->value(i);
+    const EnumValueDescriptor* canonical_value =
+        descriptor_->FindValueByNumber(value->number());
+
+    if (value == canonical_value) {
+      base_values_.push_back(value);
+      value_names.insert(EnumValueName(value));
+    } else {
+      TProtoStringType value_name(EnumValueName(value));
+      if (value_names.find(value_name) != value_names.end()) {
+        alias_values_to_skip_.insert(value);
+      } else {
+        value_names.insert(value_name);
+      }
+    }
+    all_values_.push_back(value);
+  }
+}
+
+EnumGenerator::~EnumGenerator() {}
+
+void EnumGenerator::GenerateHeader(io::Printer* printer) {
+  TProtoStringType enum_comments;
+  SourceLocation location;
+  if (descriptor_->GetSourceLocation(&location)) {
+    enum_comments = BuildCommentsString(location, true);
+  } else {
+    enum_comments = "";
+  }
+
+  printer->Print(
+      "#pragma mark - Enum $name$\n"
+      "\n",
+      "name", name_);
+
+  // Swift 5 included SE0192 "Handling Future Enum Cases"
+  //   https://github.com/apple/swift-evolution/blob/master/proposals/0192-non-exhaustive-enums.md
+  // Since a .proto file can get new values added to an enum at any time, they
+  // are effectively "non-frozen". Even in a proto3 syntax file where there is
+  // support for the unknown value, an edit to the file can always add a new
+  // value moving something from unknown to known. Since Swift is now ABI
+  // stable, it also means a binary could contain Swift compiled against one
+  // version of the .pbobjc.h file, but finally linked against an enum with
+  // more cases. So the Swift code will always have to treat ObjC Proto Enums
+  // as "non-frozen". The default behavior in SE0192 is for all objc enums to
+  // be "non-frozen" unless marked as otherwise, so this means this generation
+  // doesn't have to bother with the `enum_extensibility` attribute, as the
+  // default will be what is needed.
+
+  printer->Print("$comments$typedef$deprecated_attribute$ GPB_ENUM($name$) {\n",
+                 "comments", enum_comments,
+                 "deprecated_attribute", GetOptionalDeprecatedAttribute(descriptor_, descriptor_->file()),
+                 "name", name_);
+  printer->Indent();
+
+  if (HasPreservingUnknownEnumSemantics(descriptor_->file())) {
+    // Include the unknown value.
+    printer->Print(
+      "/**\n"
+      " * Value used if any message's field encounters a value that is not defined\n"
+      " * by this enum. The message will also have C functions to get/set the rawValue\n"
+      " * of the field.\n"
+      " **/\n"
+      "$name$_GPBUnrecognizedEnumeratorValue = kGPBUnrecognizedEnumeratorValue,\n",
+      "name", name_);
+  }
+  for (int i = 0; i < all_values_.size(); i++) {
+    if (alias_values_to_skip_.find(all_values_[i]) != alias_values_to_skip_.end()) {
+      continue;
+    }
+    SourceLocation location;
+    if (all_values_[i]->GetSourceLocation(&location)) {
+      TProtoStringType comments = BuildCommentsString(location, true).c_str();
+      if (comments.length() > 0) {
+        if (i > 0) {
+          printer->Print("\n");
+        }
+        printer->Print(comments.c_str());
+      }
+    }
+
+    printer->Print(
+        "$name$$deprecated_attribute$ = $value$,\n",
+        "name", EnumValueName(all_values_[i]),
+        "deprecated_attribute", GetOptionalDeprecatedAttribute(all_values_[i]),
+        "value", StrCat(all_values_[i]->number()));
+  }
+  printer->Outdent();
+  printer->Print(
+      "};\n"
+      "\n"
+      "GPBEnumDescriptor *$name$_EnumDescriptor(void);\n"
+      "\n"
+      "/**\n"
+      " * Checks to see if the given value is defined by the enum or was not known at\n"
+      " * the time this source was generated.\n"
+      " **/\n"
+      "BOOL $name$_IsValidValue(int32_t value);\n"
+      "\n",
+      "name", name_);
+}
+
+void EnumGenerator::GenerateSource(io::Printer* printer) {
+  printer->Print(
+      "#pragma mark - Enum $name$\n"
+      "\n",
+      "name", name_);
+
+  // Note: For the TextFormat decode info, we can't use the enum value as
+  // the key because protocol buffer enums have 'allow_alias', which lets
+  // a value be used more than once. Instead, the index into the list of
+  // enum value descriptions is used. Note: start with -1 so the first one
+  // will be zero.
+  TextFormatDecodeData text_format_decode_data;
+  int enum_value_description_key = -1;
+  TProtoStringType text_blob;
+
+  for (int i = 0; i < all_values_.size(); i++) {
+    ++enum_value_description_key;
+    TProtoStringType short_name(EnumValueShortName(all_values_[i]));
+    text_blob += short_name + '\0';
+    if (UnCamelCaseEnumShortName(short_name) != all_values_[i]->name()) {
+      text_format_decode_data.AddString(enum_value_description_key, short_name,
+                                        all_values_[i]->name());
+    }
+  }
+
+  printer->Print(
+      "GPBEnumDescriptor *$name$_EnumDescriptor(void) {\n"
+      "  static _Atomic(GPBEnumDescriptor*) descriptor = nil;\n"
+      "  if (!descriptor) {\n",
+      "name", name_);
+
+  static const int kBytesPerLine = 40;  // allow for escaping
+  printer->Print(
+      "    static const char *valueNames =");
+  for (int i = 0; i < text_blob.size(); i += kBytesPerLine) {
+    printer->Print(
+        "\n        \"$data$\"",
+        "data", EscapeTrigraphs(CEscape(text_blob.substr(i, kBytesPerLine))));
+  }
+  printer->Print(
+      ";\n"
+      "    static const int32_t values[] = {\n");
+  for (int i = 0; i < all_values_.size(); i++) {
+    printer->Print("        $name$,\n",  "name", EnumValueName(all_values_[i]));
+  }
+  printer->Print("    };\n");
+
+  if (text_format_decode_data.num_entries() == 0) {
+    printer->Print(
+        "    GPBEnumDescriptor *worker =\n"
+        "        [GPBEnumDescriptor allocDescriptorForName:GPBNSStringifySymbol($name$)\n"
+        "                                       valueNames:valueNames\n"
+        "                                           values:values\n"
+        "                                            count:(uint32_t)(sizeof(values) / sizeof(int32_t))\n"
+        "                                     enumVerifier:$name$_IsValidValue];\n",
+        "name", name_);
+    } else {
+      printer->Print(
+        "    static const char *extraTextFormatInfo = \"$extraTextFormatInfo$\";\n"
+        "    GPBEnumDescriptor *worker =\n"
+        "        [GPBEnumDescriptor allocDescriptorForName:GPBNSStringifySymbol($name$)\n"
+        "                                       valueNames:valueNames\n"
+        "                                           values:values\n"
+        "                                            count:(uint32_t)(sizeof(values) / sizeof(int32_t))\n"
+        "                                     enumVerifier:$name$_IsValidValue\n"
+        "                              extraTextFormatInfo:extraTextFormatInfo];\n",
+        "name", name_,
+        "extraTextFormatInfo", CEscape(text_format_decode_data.Data()));
+    }
+    printer->Print(
+      "    GPBEnumDescriptor *expected = nil;\n"
+      "    if (!atomic_compare_exchange_strong(&descriptor, &expected, worker)) {\n"
+      "      [worker release];\n"
+      "    }\n"
+      "  }\n"
+      "  return descriptor;\n"
+      "}\n\n");
+
+  printer->Print(
+      "BOOL $name$_IsValidValue(int32_t value__) {\n"
+      "  switch (value__) {\n",
+      "name", name_);
+
+  for (int i = 0; i < base_values_.size(); i++) {
+    printer->Print(
+        "    case $name$:\n",
+        "name", EnumValueName(base_values_[i]));
+  }
+
+  printer->Print(
+      "      return YES;\n"
+      "    default:\n"
+      "      return NO;\n"
+      "  }\n"
+      "}\n\n");
+}
+}  // namespace objectivec
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google