GPBUtilities.m 83.8 KB
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// 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.

#import "GPBUtilities_PackagePrivate.h"

#import <objc/runtime.h>

#import "GPBArray_PackagePrivate.h"
#import "GPBDescriptor_PackagePrivate.h"
#import "GPBDictionary_PackagePrivate.h"
#import "GPBMessage_PackagePrivate.h"
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#import "GPBUnknownField.h"
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#import "GPBUnknownFieldSet.h"

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// Direct access is use for speed, to avoid even internally declaring things
// read/write, etc. The warning is enabled in the project to ensure code calling
// protos can turn on -Wdirect-ivar-access without issues.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdirect-ivar-access"

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static void AppendTextFormatForMessage(GPBMessage *message,
                                       NSMutableString *toStr,
                                       NSString *lineIndent);

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// Are two datatypes the same basic type representation (ex Int32 and SInt32).
// Marked unused because currently only called from asserts/debug.
static BOOL DataTypesEquivalent(GPBDataType type1,
                                GPBDataType type2) __attribute__ ((unused));

// Basic type representation for a type (ex: for SInt32 it is Int32).
// Marked unused because currently only called from asserts/debug.
static GPBDataType BaseDataType(GPBDataType type) __attribute__ ((unused));

// String name for a data type.
// Marked unused because currently only called from asserts/debug.
static NSString *TypeToString(GPBDataType dataType) __attribute__ ((unused));

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NSData *GPBEmptyNSData(void) {
  static dispatch_once_t onceToken;
  static NSData *defaultNSData = nil;
  dispatch_once(&onceToken, ^{
    defaultNSData = [[NSData alloc] init];
  });
  return defaultNSData;
}

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void GPBMessageDropUnknownFieldsRecursively(GPBMessage *initialMessage) {
  if (!initialMessage) {
    return;
  }

  // Use an array as a list to process to avoid recursion.
  NSMutableArray *todo = [NSMutableArray arrayWithObject:initialMessage];

  while (todo.count) {
    GPBMessage *msg = todo.lastObject;
    [todo removeLastObject];

    // Clear unknowns.
    msg.unknownFields = nil;

    // Handle the message fields.
    GPBDescriptor *descriptor = [[msg class] descriptor];
    for (GPBFieldDescriptor *field in descriptor->fields_) {
      if (!GPBFieldDataTypeIsMessage(field)) {
        continue;
      }
      switch (field.fieldType) {
        case GPBFieldTypeSingle:
          if (GPBGetHasIvarField(msg, field)) {
            GPBMessage *fieldMessage = GPBGetObjectIvarWithFieldNoAutocreate(msg, field);
            [todo addObject:fieldMessage];
          }
          break;

        case GPBFieldTypeRepeated: {
          NSArray *fieldMessages = GPBGetObjectIvarWithFieldNoAutocreate(msg, field);
          if (fieldMessages.count) {
            [todo addObjectsFromArray:fieldMessages];
          }
          break;
        }

        case GPBFieldTypeMap: {
          id rawFieldMap = GPBGetObjectIvarWithFieldNoAutocreate(msg, field);
          switch (field.mapKeyDataType) {
            case GPBDataTypeBool:
              [(GPBBoolObjectDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  BOOL key, id _Nonnull object, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:object];
              }];
              break;
            case GPBDataTypeFixed32:
            case GPBDataTypeUInt32:
              [(GPBUInt32ObjectDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  uint32_t key, id _Nonnull object, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:object];
              }];
              break;
            case GPBDataTypeInt32:
            case GPBDataTypeSFixed32:
            case GPBDataTypeSInt32:
              [(GPBInt32ObjectDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  int32_t key, id _Nonnull object, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:object];
              }];
              break;
            case GPBDataTypeFixed64:
            case GPBDataTypeUInt64:
              [(GPBUInt64ObjectDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  uint64_t key, id _Nonnull object, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:object];
              }];
              break;
            case GPBDataTypeInt64:
            case GPBDataTypeSFixed64:
            case GPBDataTypeSInt64:
              [(GPBInt64ObjectDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  int64_t key, id _Nonnull object, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:object];
              }];
              break;
            case GPBDataTypeString:
              [(NSDictionary*)rawFieldMap enumerateKeysAndObjectsUsingBlock:^(
                  NSString * _Nonnull key, GPBMessage * _Nonnull obj, BOOL * _Nonnull stop) {
                #pragma unused(key, stop)
                [todo addObject:obj];
              }];
              break;
            case GPBDataTypeFloat:
            case GPBDataTypeDouble:
            case GPBDataTypeEnum:
            case GPBDataTypeBytes:
            case GPBDataTypeGroup:
            case GPBDataTypeMessage:
              NSCAssert(NO, @"Aren't valid key types.");
          }
          break;
        }  // switch(field.mapKeyDataType)
      }  // switch(field.fieldType)
    }  // for(fields)

    // Handle any extensions holding messages.
    for (GPBExtensionDescriptor *extension in [msg extensionsCurrentlySet]) {
      if (!GPBDataTypeIsMessage(extension.dataType)) {
        continue;
      }
      if (extension.isRepeated) {
        NSArray *extMessages = [msg getExtension:extension];
        [todo addObjectsFromArray:extMessages];
      } else {
        GPBMessage *extMessage = [msg getExtension:extension];
        [todo addObject:extMessage];
      }
    }  // for(extensionsCurrentlySet)

  }  // while(todo.count)
}


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// -- About Version Checks --
// There's actually 3 places these checks all come into play:
// 1. When the generated source is compile into .o files, the header check
//    happens. This is checking the protoc used matches the library being used
//    when making the .o.
// 2. Every place a generated proto header is included in a developer's code,
//    the header check comes into play again. But this time it is checking that
//    the current library headers being used still support/match the ones for
//    the generated code.
// 3. At runtime the final check here (GPBCheckRuntimeVersionsInternal), is
//    called from the generated code passing in values captured when the
//    generated code's .o was made. This checks that at runtime the generated
//    code and runtime library match.

void GPBCheckRuntimeVersionSupport(int32_t objcRuntimeVersion) {
  // NOTE: This is passing the value captured in the compiled code to check
  // against the values captured when the runtime support was compiled. This
  // ensures the library code isn't in a different framework/library that
  // was generated with a non matching version.
  if (GOOGLE_PROTOBUF_OBJC_VERSION < objcRuntimeVersion) {
    // Library is too old for headers.
    [NSException raise:NSInternalInconsistencyException
                format:@"Linked to ProtocolBuffer runtime version %d,"
                       @" but code compiled needing atleast %d!",
                       GOOGLE_PROTOBUF_OBJC_VERSION, objcRuntimeVersion];
  }
  if (objcRuntimeVersion < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION) {
    // Headers are too old for library.
    [NSException raise:NSInternalInconsistencyException
                format:@"Proto generation source compiled against runtime"
                       @" version %d, but this version of the runtime only"
                       @" supports back to %d!",
                       objcRuntimeVersion,
                       GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION];
  }
}

// This api is no longer used for version checks. 30001 is the last version
// using this old versioning model. When that support is removed, this function
// can be removed (along with the declaration in GPBUtilities_PackagePrivate.h).
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void GPBCheckRuntimeVersionInternal(int32_t version) {
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  GPBInternalCompileAssert(GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION == 30001,
                           time_to_remove_this_old_version_shim);
  if (version != GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION) {
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    [NSException raise:NSInternalInconsistencyException
                format:@"Linked to ProtocolBuffer runtime version %d,"
                       @" but code compiled with version %d!",
                       GOOGLE_PROTOBUF_OBJC_GEN_VERSION, version];
  }
}

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BOOL GPBMessageHasFieldNumberSet(GPBMessage *self, uint32_t fieldNumber) {
  GPBDescriptor *descriptor = [self descriptor];
  GPBFieldDescriptor *field = [descriptor fieldWithNumber:fieldNumber];
  return GPBMessageHasFieldSet(self, field);
}

BOOL GPBMessageHasFieldSet(GPBMessage *self, GPBFieldDescriptor *field) {
  if (self == nil || field == nil) return NO;

  // Repeated/Map don't use the bit, they check the count.
  if (GPBFieldIsMapOrArray(field)) {
    // Array/map type doesn't matter, since GPB*Array/NSArray and
    // GPB*Dictionary/NSDictionary all support -count;
    NSArray *arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
    return (arrayOrMap.count > 0);
  } else {
    return GPBGetHasIvarField(self, field);
  }
}

void GPBClearMessageField(GPBMessage *self, GPBFieldDescriptor *field) {
  // If not set, nothing to do.
  if (!GPBGetHasIvarField(self, field)) {
    return;
  }

  if (GPBFieldStoresObject(field)) {
    // Object types are handled slightly differently, they need to be released.
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    id *typePtr = (id *)&storage[field->description_->offset];
    [*typePtr release];
    *typePtr = nil;
  } else {
    // POD types just need to clear the has bit as the Get* method will
    // fetch the default when needed.
  }
  GPBSetHasIvarField(self, field, NO);
}

BOOL GPBGetHasIvar(GPBMessage *self, int32_t idx, uint32_t fieldNumber) {
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  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
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  if (idx < 0) {
    NSCAssert(fieldNumber != 0, @"Invalid field number.");
    BOOL hasIvar = (self->messageStorage_->_has_storage_[-idx] == fieldNumber);
    return hasIvar;
  } else {
    NSCAssert(idx != GPBNoHasBit, @"Invalid has bit.");
    uint32_t byteIndex = idx / 32;
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    uint32_t bitMask = (1U << (idx % 32));
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    BOOL hasIvar =
        (self->messageStorage_->_has_storage_[byteIndex] & bitMask) ? YES : NO;
    return hasIvar;
  }
}

uint32_t GPBGetHasOneof(GPBMessage *self, int32_t idx) {
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  NSCAssert(idx < 0, @"%@: invalid index (%d) for oneof.",
            [self class], idx);
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  uint32_t result = self->messageStorage_->_has_storage_[-idx];
  return result;
}

void GPBSetHasIvar(GPBMessage *self, int32_t idx, uint32_t fieldNumber,
                   BOOL value) {
  if (idx < 0) {
    NSCAssert(fieldNumber != 0, @"Invalid field number.");
    uint32_t *has_storage = self->messageStorage_->_has_storage_;
    has_storage[-idx] = (value ? fieldNumber : 0);
  } else {
    NSCAssert(idx != GPBNoHasBit, @"Invalid has bit.");
    uint32_t *has_storage = self->messageStorage_->_has_storage_;
    uint32_t byte = idx / 32;
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    uint32_t bitMask = (1U << (idx % 32));
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    if (value) {
      has_storage[byte] |= bitMask;
    } else {
      has_storage[byte] &= ~bitMask;
    }
  }
}

void GPBMaybeClearOneof(GPBMessage *self, GPBOneofDescriptor *oneof,
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                        int32_t oneofHasIndex, uint32_t fieldNumberNotToClear) {
  uint32_t fieldNumberSet = GPBGetHasOneof(self, oneofHasIndex);
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  if ((fieldNumberSet == fieldNumberNotToClear) || (fieldNumberSet == 0)) {
    // Do nothing/nothing set in the oneof.
    return;
  }

  // Like GPBClearMessageField(), free the memory if an objecttype is set,
  // pod types don't need to do anything.
  GPBFieldDescriptor *fieldSet = [oneof fieldWithNumber:fieldNumberSet];
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  NSCAssert(fieldSet,
            @"%@: oneof set to something (%u) not in the oneof?",
            [self class], fieldNumberSet);
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  if (fieldSet && GPBFieldStoresObject(fieldSet)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    id *typePtr = (id *)&storage[fieldSet->description_->offset];
    [*typePtr release];
    *typePtr = nil;
  }

  // Set to nothing stored in the oneof.
  // (field number doesn't matter since setting to nothing).
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  GPBSetHasIvar(self, oneofHasIndex, 1, NO);
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}

#pragma mark - IVar accessors

//%PDDM-DEFINE IVAR_POD_ACCESSORS_DEFN(NAME, TYPE)
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//%TYPE GPBGetMessage##NAME##Field(GPBMessage *self,
//% TYPE$S            NAME$S       GPBFieldDescriptor *field) {
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//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to get value of TYPE from field %@ "
//%            @"of %@ which is of type %@.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
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//%  if (GPBGetHasIvarField(self, field)) {
//%    uint8_t *storage = (uint8_t *)self->messageStorage_;
//%    TYPE *typePtr = (TYPE *)&storage[field->description_->offset];
//%    return *typePtr;
//%  } else {
//%    return field.defaultValue.value##NAME;
//%  }
//%}
//%
//%// Only exists for public api, no core code should use this.
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//%void GPBSetMessage##NAME##Field(GPBMessage *self,
//%                   NAME$S     GPBFieldDescriptor *field,
//%                   NAME$S     TYPE value) {
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//%  if (self == nil || field == nil) return;
//%  GPBFileSyntax syntax = [self descriptor].file.syntax;
//%  GPBSet##NAME##IvarWithFieldInternal(self, field, value, syntax);
//%}
//%
//%void GPBSet##NAME##IvarWithFieldInternal(GPBMessage *self,
//%            NAME$S                     GPBFieldDescriptor *field,
//%            NAME$S                     TYPE value,
//%            NAME$S                     GPBFileSyntax syntax) {
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//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to set field %@ of %@ which is of type %@ with "
//%            @"value of type TYPE.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
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//%  GPBOneofDescriptor *oneof = field->containingOneof_;
//%  if (oneof) {
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//%    GPBMessageFieldDescription *fieldDesc = field->description_;
//%    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
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//%  }
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//%#if defined(DEBUG) && DEBUG
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//%  NSCAssert(self->messageStorage_ != NULL,
//%            @"%@: All messages should have storage (from init)",
//%            [self class]);
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//%#endif
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//%#if defined(__clang_analyzer__)
//%  if (self->messageStorage_ == NULL) return;
//%#endif
//%  uint8_t *storage = (uint8_t *)self->messageStorage_;
//%  TYPE *typePtr = (TYPE *)&storage[field->description_->offset];
//%  *typePtr = value;
//%  // proto2: any value counts as having been set; proto3, it
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//%  // has to be a non zero value or be in a oneof.
//%  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
//%                   || (value != (TYPE)0)
//%                   || (field->containingOneof_ != NULL));
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//%  GPBSetHasIvarField(self, field, hasValue);
//%  GPBBecomeVisibleToAutocreator(self);
//%}
//%
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//%PDDM-DEFINE IVAR_ALIAS_DEFN_OBJECT(NAME, TYPE)
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//%// Only exists for public api, no core code should use this.
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//%TYPE *GPBGetMessage##NAME##Field(GPBMessage *self,
//% TYPE$S             NAME$S       GPBFieldDescriptor *field) {
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//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to get value of TYPE from field %@ "
//%            @"of %@ which is of type %@.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
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//%  return (TYPE *)GPBGetObjectIvarWithField(self, field);
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//%}
//%
//%// Only exists for public api, no core code should use this.
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//%void GPBSetMessage##NAME##Field(GPBMessage *self,
//%                   NAME$S     GPBFieldDescriptor *field,
//%                   NAME$S     TYPE *value) {
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//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to set field %@ of %@ which is of type %@ with "
//%            @"value of type TYPE.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
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//%  GPBSetObjectIvarWithField(self, field, (id)value);
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//%}
//%
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//%PDDM-DEFINE IVAR_ALIAS_DEFN_COPY_OBJECT(NAME, TYPE)
//%// Only exists for public api, no core code should use this.
//%TYPE *GPBGetMessage##NAME##Field(GPBMessage *self,
//% TYPE$S             NAME$S       GPBFieldDescriptor *field) {
//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to get value of TYPE from field %@ "
//%            @"of %@ which is of type %@.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
//%  return (TYPE *)GPBGetObjectIvarWithField(self, field);
//%}
//%
//%// Only exists for public api, no core code should use this.
//%void GPBSetMessage##NAME##Field(GPBMessage *self,
//%                   NAME$S     GPBFieldDescriptor *field,
//%                   NAME$S     TYPE *value) {
//%#if defined(DEBUG) && DEBUG
//%  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
//%                                GPBDataType##NAME),
//%            @"Attempting to set field %@ of %@ which is of type %@ with "
//%            @"value of type TYPE.",
//%            [self class], field.name,
//%            TypeToString(GPBGetFieldDataType(field)));
//%#endif
//%  GPBSetCopyObjectIvarWithField(self, field, (id)value);
//%}
//%
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// Object types are handled slightly differently, they need to be released
// and retained.

void GPBSetAutocreatedRetainedObjectIvarWithField(
    GPBMessage *self, GPBFieldDescriptor *field,
    id __attribute__((ns_consumed)) value) {
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  id *typePtr = (id *)&storage[field->description_->offset];
  NSCAssert(*typePtr == NULL, @"Can't set autocreated object more than once.");
  *typePtr = value;
}

void GPBClearAutocreatedMessageIvarWithField(GPBMessage *self,
                                             GPBFieldDescriptor *field) {
  if (GPBGetHasIvarField(self, field)) {
    return;
  }
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  id *typePtr = (id *)&storage[field->description_->offset];
  GPBMessage *oldValue = *typePtr;
  *typePtr = NULL;
  GPBClearMessageAutocreator(oldValue);
  [oldValue release];
}

// This exists only for briging some aliased types, nothing else should use it.
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static void GPBSetObjectIvarWithField(GPBMessage *self,
                                      GPBFieldDescriptor *field, id value) {
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  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetRetainedObjectIvarWithFieldInternal(self, field, [value retain],
                                            syntax);
}

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static void GPBSetCopyObjectIvarWithField(GPBMessage *self,
                                          GPBFieldDescriptor *field, id value);

// GPBSetCopyObjectIvarWithField is blocked from the analyzer because it flags
// a leak for the -copy even though GPBSetRetainedObjectIvarWithFieldInternal
// is marked as consuming the value. Note: For some reason this doesn't happen
// with the -retain in GPBSetObjectIvarWithField.
#if !defined(__clang_analyzer__)
// This exists only for briging some aliased types, nothing else should use it.
static void GPBSetCopyObjectIvarWithField(GPBMessage *self,
                                          GPBFieldDescriptor *field, id value) {
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetRetainedObjectIvarWithFieldInternal(self, field, [value copy],
                                            syntax);
}
#endif  // !defined(__clang_analyzer__)

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void GPBSetObjectIvarWithFieldInternal(GPBMessage *self,
                                       GPBFieldDescriptor *field, id value,
                                       GPBFileSyntax syntax) {
  GPBSetRetainedObjectIvarWithFieldInternal(self, field, [value retain],
                                            syntax);
}

void GPBSetRetainedObjectIvarWithFieldInternal(GPBMessage *self,
                                               GPBFieldDescriptor *field,
                                               id value, GPBFileSyntax syntax) {
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  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
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#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
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  GPBDataType fieldType = GPBGetFieldDataType(field);
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  BOOL isMapOrArray = GPBFieldIsMapOrArray(field);
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  BOOL fieldIsMessage = GPBDataTypeIsMessage(fieldType);
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#if defined(DEBUG) && DEBUG
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  if (value == nil && !isMapOrArray && !fieldIsMessage &&
      field.hasDefaultValue) {
    // Setting a message to nil is an obvious way to "clear" the value
    // as there is no way to set a non-empty default value for messages.
    //
    // For Strings and Bytes that have default values set it is not clear what
    // should be done when their value is set to nil. Is the intention just to
    // clear the set value and reset to default, or is the intention to set the
    // value to the empty string/data? Arguments can be made for both cases.
    // 'nil' has been abused as a replacement for an empty string/data in ObjC.
    // We decided to be consistent with all "object" types and clear the has
    // field, and fall back on the default value. The warning below will only
    // appear in debug, but the could should be changed so the intention is
    // clear.
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    NSString *hasSel = NSStringFromSelector(field->hasOrCountSel_);
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    NSString *propName = field.name;
    NSString *className = self.descriptor.name;
    NSLog(@"warning: '%@.%@ = nil;' is not clearly defined for fields with "
          @"default values. Please use '%@.%@ = %@' if you want to set it to "
          @"empty, or call '%@.%@ = NO' to reset it to it's default value of "
          @"'%@'. Defaulting to resetting default value.",
          className, propName, className, propName,
576
          (fieldType == GPBDataTypeString) ? @"@\"\"" : @"GPBEmptyNSData()",
577 578 579 580 581 582 583 584 585 586
          className, hasSel, field.defaultValue.valueString);
    // Note: valueString, depending on the type, it could easily be
    // valueData/valueMessage.
  }
#endif  // DEBUG
  if (!isMapOrArray) {
    // Non repeated/map can be in an oneof, clear any existing value from the
    // oneof.
    GPBOneofDescriptor *oneof = field->containingOneof_;
    if (oneof) {
587 588
      GPBMessageFieldDescription *fieldDesc = field->description_;
      GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
589 590 591
    }
    // Clear "has" if they are being set to nil.
    BOOL setHasValue = (value != nil);
592 593 594
    // Under proto3, Bytes & String fields get cleared by resetting them to
    // their default (empty) values, so if they are set to something of length
    // zero, they are being cleared.
595 596
    if ((syntax == GPBFileSyntaxProto3) && !fieldIsMessage &&
        ([value length] == 0)) {
597 598 599 600 601 602 603 604 605 606 607 608 609
      // Except, if the field was in a oneof, then it still gets recorded as
      // having been set so the state of the oneof can be serialized back out.
      if (!oneof) {
        setHasValue = NO;
      }
      if (setHasValue) {
        NSCAssert(value != nil, @"Should never be setting has for nil");
      } else {
        // The value passed in was retained, it must be released since we
        // aren't saving anything in the field.
        [value release];
        value = nil;
      }
610 611 612 613 614 615 616 617 618 619 620 621 622
    }
    GPBSetHasIvarField(self, field, setHasValue);
  }
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  id *typePtr = (id *)&storage[field->description_->offset];

  id oldValue = *typePtr;

  *typePtr = value;

  if (oldValue) {
    if (isMapOrArray) {
      if (field.fieldType == GPBFieldTypeRepeated) {
623
        // If the old array was autocreated by us, then clear it.
624
        if (GPBDataTypeIsObject(fieldType)) {
625 626 627 628 629
          if ([oldValue isKindOfClass:[GPBAutocreatedArray class]]) {
            GPBAutocreatedArray *autoArray = oldValue;
            if (autoArray->_autocreator == self) {
              autoArray->_autocreator = nil;
            }
630 631 632 633 634 635 636 637
          }
        } else {
          // Type doesn't matter, it is a GPB*Array.
          GPBInt32Array *gpbArray = oldValue;
          if (gpbArray->_autocreator == self) {
            gpbArray->_autocreator = nil;
          }
        }
638 639
      } else { // GPBFieldTypeMap
        // If the old map was autocreated by us, then clear it.
640 641
        if ((field.mapKeyDataType == GPBDataTypeString) &&
            GPBDataTypeIsObject(fieldType)) {
642 643 644 645 646
          if ([oldValue isKindOfClass:[GPBAutocreatedDictionary class]]) {
            GPBAutocreatedDictionary *autoDict = oldValue;
            if (autoDict->_autocreator == self) {
              autoDict->_autocreator = nil;
            }
647 648 649 650 651 652 653 654
          }
        } else {
          // Type doesn't matter, it is a GPB*Dictionary.
          GPBInt32Int32Dictionary *gpbDict = oldValue;
          if (gpbDict->_autocreator == self) {
            gpbDict->_autocreator = nil;
          }
        }
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679
      }
    } else if (fieldIsMessage) {
      // If the old message value was autocreated by us, then clear it.
      GPBMessage *oldMessageValue = oldValue;
      if (GPBWasMessageAutocreatedBy(oldMessageValue, self)) {
        GPBClearMessageAutocreator(oldMessageValue);
      }
    }
    [oldValue release];
  }

  GPBBecomeVisibleToAutocreator(self);
}

id GPBGetObjectIvarWithFieldNoAutocreate(GPBMessage *self,
                                         GPBFieldDescriptor *field) {
  if (self->messageStorage_ == nil) {
    return nil;
  }
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  id *typePtr = (id *)&storage[field->description_->offset];
  return *typePtr;
}

// Only exists for public api, no core code should use this.
680
int32_t GPBGetMessageEnumField(GPBMessage *self, GPBFieldDescriptor *field) {
681 682 683 684 685 686 687
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  return GPBGetEnumIvarWithFieldInternal(self, field, syntax);
}

int32_t GPBGetEnumIvarWithFieldInternal(GPBMessage *self,
                                        GPBFieldDescriptor *field,
                                        GPBFileSyntax syntax) {
688 689 690 691 692 693 694
#if defined(DEBUG) && DEBUG
  NSCAssert(GPBGetFieldDataType(field) == GPBDataTypeEnum,
            @"Attempting to get value of type Enum from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
695 696 697
  int32_t result = GPBGetMessageInt32Field(self, field);
  // If this is presevering unknown enums, make sure the value is valid before
  // returning it.
698 699 700 701 702 703 704 705
  if (GPBHasPreservingUnknownEnumSemantics(syntax) &&
      ![field isValidEnumValue:result]) {
    result = kGPBUnrecognizedEnumeratorValue;
  }
  return result;
}

// Only exists for public api, no core code should use this.
706 707
void GPBSetMessageEnumField(GPBMessage *self, GPBFieldDescriptor *field,
                            int32_t value) {
708 709 710 711 712 713 714
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetInt32IvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetEnumIvarWithFieldInternal(GPBMessage *self,
                                     GPBFieldDescriptor *field, int32_t value,
                                     GPBFileSyntax syntax) {
715 716 717 718 719 720 721
#if defined(DEBUG) && DEBUG
  NSCAssert(GPBGetFieldDataType(field) == GPBDataTypeEnum,
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type Enum.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
722 723 724 725 726 727 728 729 730
  // Don't allow in unknown values.  Proto3 can use the Raw method.
  if (![field isValidEnumValue:value]) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@: Attempt to set an unknown enum value (%d)",
                       [self class], field.name, value];
  }
  GPBSetInt32IvarWithFieldInternal(self, field, value, syntax);
}

731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746
// Only exists for public api, no core code should use this.
int32_t GPBGetMessageRawEnumField(GPBMessage *self,
                                  GPBFieldDescriptor *field) {
  int32_t result = GPBGetMessageInt32Field(self, field);
  return result;
}

// Only exists for public api, no core code should use this.
void GPBSetMessageRawEnumField(GPBMessage *self, GPBFieldDescriptor *field,
                               int32_t value) {
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetInt32IvarWithFieldInternal(self, field, value, syntax);
}

BOOL GPBGetMessageBoolField(GPBMessage *self,
                            GPBFieldDescriptor *field) {
747 748 749 750 751 752 753
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field), GPBDataTypeBool),
            @"Attempting to get value of type bool from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
754
  if (GPBGetHasIvarField(self, field)) {
755 756 757 758 759 760
    // Bools are stored in the has bits to avoid needing explicit space in the
    // storage structure.
    // (the field number passed to the HasIvar helper doesn't really matter
    // since the offset is never negative)
    GPBMessageFieldDescription *fieldDesc = field->description_;
    return GPBGetHasIvar(self, (int32_t)(fieldDesc->offset), fieldDesc->number);
761 762 763 764 765 766
  } else {
    return field.defaultValue.valueBool;
  }
}

// Only exists for public api, no core code should use this.
767 768 769
void GPBSetMessageBoolField(GPBMessage *self,
                            GPBFieldDescriptor *field,
                            BOOL value) {
770 771 772 773 774 775 776 777 778
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetBoolIvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetBoolIvarWithFieldInternal(GPBMessage *self,
                                     GPBFieldDescriptor *field,
                                     BOOL value,
                                     GPBFileSyntax syntax) {
779 780 781 782 783 784 785
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field), GPBDataTypeBool),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type bool.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
786
  GPBMessageFieldDescription *fieldDesc = field->description_;
787 788
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
789
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
790
  }
791 792 793 794 795 796 797

  // Bools are stored in the has bits to avoid needing explicit space in the
  // storage structure.
  // (the field number passed to the HasIvar helper doesn't really matter since
  // the offset is never negative)
  GPBSetHasIvar(self, (int32_t)(fieldDesc->offset), fieldDesc->number, value);

798
  // proto2: any value counts as having been set; proto3, it
799 800 801 802
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (BOOL)0)
                   || (field->containingOneof_ != NULL));
803 804 805 806 807 808 809
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(Int32, int32_t)
// This block of code is generated, do not edit it directly.

810 811
int32_t GPBGetMessageInt32Field(GPBMessage *self,
                                GPBFieldDescriptor *field) {
812 813 814 815 816 817 818 819
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeInt32),
            @"Attempting to get value of int32_t from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
820 821 822 823 824 825 826 827 828 829
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    int32_t *typePtr = (int32_t *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueInt32;
  }
}

// Only exists for public api, no core code should use this.
830 831 832
void GPBSetMessageInt32Field(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             int32_t value) {
833 834 835 836 837 838 839 840 841
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetInt32IvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetInt32IvarWithFieldInternal(GPBMessage *self,
                                      GPBFieldDescriptor *field,
                                      int32_t value,
                                      GPBFileSyntax syntax) {
842 843 844 845 846 847 848 849
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeInt32),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type int32_t.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
850 851
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
852 853
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
854
  }
855
#if defined(DEBUG) && DEBUG
856 857 858
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
859
#endif
860 861 862 863 864 865 866
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  int32_t *typePtr = (int32_t *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
867 868 869 870
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (int32_t)0)
                   || (field->containingOneof_ != NULL));
871 872 873 874 875 876 877
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(UInt32, uint32_t)
// This block of code is generated, do not edit it directly.

878 879
uint32_t GPBGetMessageUInt32Field(GPBMessage *self,
                                  GPBFieldDescriptor *field) {
880 881 882 883 884 885 886 887
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeUInt32),
            @"Attempting to get value of uint32_t from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
888 889 890 891 892 893 894 895 896 897
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    uint32_t *typePtr = (uint32_t *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueUInt32;
  }
}

// Only exists for public api, no core code should use this.
898 899 900
void GPBSetMessageUInt32Field(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              uint32_t value) {
901 902 903 904 905 906 907 908 909
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetUInt32IvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetUInt32IvarWithFieldInternal(GPBMessage *self,
                                       GPBFieldDescriptor *field,
                                       uint32_t value,
                                       GPBFileSyntax syntax) {
910 911 912 913 914 915 916 917
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeUInt32),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type uint32_t.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
918 919
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
920 921
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
922
  }
923
#if defined(DEBUG) && DEBUG
924 925 926
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
927
#endif
928 929 930 931 932 933 934
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  uint32_t *typePtr = (uint32_t *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
935 936 937 938
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (uint32_t)0)
                   || (field->containingOneof_ != NULL));
939 940 941 942 943 944 945
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(Int64, int64_t)
// This block of code is generated, do not edit it directly.

946 947
int64_t GPBGetMessageInt64Field(GPBMessage *self,
                                GPBFieldDescriptor *field) {
948 949 950 951 952 953 954 955
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeInt64),
            @"Attempting to get value of int64_t from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
956 957 958 959 960 961 962 963 964 965
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    int64_t *typePtr = (int64_t *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueInt64;
  }
}

// Only exists for public api, no core code should use this.
966 967 968
void GPBSetMessageInt64Field(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             int64_t value) {
969 970 971 972 973 974 975 976 977
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetInt64IvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetInt64IvarWithFieldInternal(GPBMessage *self,
                                      GPBFieldDescriptor *field,
                                      int64_t value,
                                      GPBFileSyntax syntax) {
978 979 980 981 982 983 984 985
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeInt64),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type int64_t.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
986 987
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
988 989
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
990
  }
991
#if defined(DEBUG) && DEBUG
992 993 994
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
995
#endif
996 997 998 999 1000 1001 1002
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  int64_t *typePtr = (int64_t *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
1003 1004 1005 1006
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (int64_t)0)
                   || (field->containingOneof_ != NULL));
1007 1008 1009 1010 1011 1012 1013
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(UInt64, uint64_t)
// This block of code is generated, do not edit it directly.

1014 1015
uint64_t GPBGetMessageUInt64Field(GPBMessage *self,
                                  GPBFieldDescriptor *field) {
1016 1017 1018 1019 1020 1021 1022 1023
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeUInt64),
            @"Attempting to get value of uint64_t from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    uint64_t *typePtr = (uint64_t *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueUInt64;
  }
}

// Only exists for public api, no core code should use this.
1034 1035 1036
void GPBSetMessageUInt64Field(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              uint64_t value) {
1037 1038 1039 1040 1041 1042 1043 1044 1045
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetUInt64IvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetUInt64IvarWithFieldInternal(GPBMessage *self,
                                       GPBFieldDescriptor *field,
                                       uint64_t value,
                                       GPBFileSyntax syntax) {
1046 1047 1048 1049 1050 1051 1052 1053
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeUInt64),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type uint64_t.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1054 1055
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
1056 1057
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
1058
  }
1059
#if defined(DEBUG) && DEBUG
1060 1061 1062
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
1063
#endif
1064 1065 1066 1067 1068 1069 1070
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  uint64_t *typePtr = (uint64_t *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
1071 1072 1073 1074
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (uint64_t)0)
                   || (field->containingOneof_ != NULL));
1075 1076 1077 1078 1079 1080 1081
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(Float, float)
// This block of code is generated, do not edit it directly.

1082 1083
float GPBGetMessageFloatField(GPBMessage *self,
                              GPBFieldDescriptor *field) {
1084 1085 1086 1087 1088 1089 1090 1091
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeFloat),
            @"Attempting to get value of float from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    float *typePtr = (float *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueFloat;
  }
}

// Only exists for public api, no core code should use this.
1102 1103 1104
void GPBSetMessageFloatField(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             float value) {
1105 1106 1107 1108 1109 1110 1111 1112 1113
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetFloatIvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetFloatIvarWithFieldInternal(GPBMessage *self,
                                      GPBFieldDescriptor *field,
                                      float value,
                                      GPBFileSyntax syntax) {
1114 1115 1116 1117 1118 1119 1120 1121
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeFloat),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type float.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1122 1123
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
1124 1125
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
1126
  }
1127
#if defined(DEBUG) && DEBUG
1128 1129 1130
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
1131
#endif
1132 1133 1134 1135 1136 1137 1138
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  float *typePtr = (float *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
1139 1140 1141 1142
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (float)0)
                   || (field->containingOneof_ != NULL));
1143 1144 1145 1146 1147 1148 1149
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND IVAR_POD_ACCESSORS_DEFN(Double, double)
// This block of code is generated, do not edit it directly.

1150 1151
double GPBGetMessageDoubleField(GPBMessage *self,
                                GPBFieldDescriptor *field) {
1152 1153 1154 1155 1156 1157 1158 1159
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeDouble),
            @"Attempting to get value of double from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    double *typePtr = (double *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueDouble;
  }
}

// Only exists for public api, no core code should use this.
1170 1171 1172
void GPBSetMessageDoubleField(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              double value) {
1173 1174 1175 1176 1177 1178 1179 1180 1181
  if (self == nil || field == nil) return;
  GPBFileSyntax syntax = [self descriptor].file.syntax;
  GPBSetDoubleIvarWithFieldInternal(self, field, value, syntax);
}

void GPBSetDoubleIvarWithFieldInternal(GPBMessage *self,
                                       GPBFieldDescriptor *field,
                                       double value,
                                       GPBFileSyntax syntax) {
1182 1183 1184 1185 1186 1187 1188 1189
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeDouble),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type double.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1190 1191
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
1192 1193
    GPBMessageFieldDescription *fieldDesc = field->description_;
    GPBMaybeClearOneof(self, oneof, fieldDesc->hasIndex, fieldDesc->number);
1194
  }
1195
#if defined(DEBUG) && DEBUG
1196 1197 1198
  NSCAssert(self->messageStorage_ != NULL,
            @"%@: All messages should have storage (from init)",
            [self class]);
1199
#endif
1200 1201 1202 1203 1204 1205 1206
#if defined(__clang_analyzer__)
  if (self->messageStorage_ == NULL) return;
#endif
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  double *typePtr = (double *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
1207 1208 1209 1210
  // has to be a non zero value or be in a oneof.
  BOOL hasValue = ((syntax == GPBFileSyntaxProto2)
                   || (value != (double)0)
                   || (field->containingOneof_ != NULL));
1211 1212 1213 1214
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

1215
//%PDDM-EXPAND-END (6 expansions)
1216 1217 1218

// Aliases are function calls that are virtually the same.

1219
//%PDDM-EXPAND IVAR_ALIAS_DEFN_COPY_OBJECT(String, NSString)
1220 1221 1222
// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
1223 1224
NSString *GPBGetMessageStringField(GPBMessage *self,
                                   GPBFieldDescriptor *field) {
1225 1226 1227 1228 1229 1230 1231 1232
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeString),
            @"Attempting to get value of NSString from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1233
  return (NSString *)GPBGetObjectIvarWithField(self, field);
1234 1235 1236
}

// Only exists for public api, no core code should use this.
1237 1238 1239
void GPBSetMessageStringField(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              NSString *value) {
1240 1241 1242 1243 1244 1245 1246 1247
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeString),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type NSString.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1248
  GPBSetCopyObjectIvarWithField(self, field, (id)value);
1249 1250
}

1251
//%PDDM-EXPAND IVAR_ALIAS_DEFN_COPY_OBJECT(Bytes, NSData)
1252 1253 1254
// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
1255 1256
NSData *GPBGetMessageBytesField(GPBMessage *self,
                                GPBFieldDescriptor *field) {
1257 1258 1259 1260 1261 1262 1263 1264
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeBytes),
            @"Attempting to get value of NSData from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1265
  return (NSData *)GPBGetObjectIvarWithField(self, field);
1266 1267 1268
}

// Only exists for public api, no core code should use this.
1269 1270 1271
void GPBSetMessageBytesField(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             NSData *value) {
1272 1273 1274 1275 1276 1277 1278 1279
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeBytes),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type NSData.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1280
  GPBSetCopyObjectIvarWithField(self, field, (id)value);
1281 1282
}

1283
//%PDDM-EXPAND IVAR_ALIAS_DEFN_OBJECT(Message, GPBMessage)
1284 1285 1286
// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
1287 1288
GPBMessage *GPBGetMessageMessageField(GPBMessage *self,
                                      GPBFieldDescriptor *field) {
1289 1290 1291 1292 1293 1294 1295 1296
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeMessage),
            @"Attempting to get value of GPBMessage from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1297
  return (GPBMessage *)GPBGetObjectIvarWithField(self, field);
1298 1299 1300
}

// Only exists for public api, no core code should use this.
1301
void GPBSetMessageMessageField(GPBMessage *self,
1302
                               GPBFieldDescriptor *field,
1303
                               GPBMessage *value) {
1304 1305 1306 1307 1308 1309 1310 1311
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeMessage),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type GPBMessage.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1312 1313 1314
  GPBSetObjectIvarWithField(self, field, (id)value);
}

1315
//%PDDM-EXPAND IVAR_ALIAS_DEFN_OBJECT(Group, GPBMessage)
1316 1317 1318
// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
1319 1320
GPBMessage *GPBGetMessageGroupField(GPBMessage *self,
                                    GPBFieldDescriptor *field) {
1321 1322 1323 1324 1325 1326 1327 1328
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeGroup),
            @"Attempting to get value of GPBMessage from field %@ "
            @"of %@ which is of type %@.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1329
  return (GPBMessage *)GPBGetObjectIvarWithField(self, field);
1330 1331 1332
}

// Only exists for public api, no core code should use this.
1333
void GPBSetMessageGroupField(GPBMessage *self,
1334
                             GPBFieldDescriptor *field,
1335
                             GPBMessage *value) {
1336 1337 1338 1339 1340 1341 1342 1343
#if defined(DEBUG) && DEBUG
  NSCAssert(DataTypesEquivalent(GPBGetFieldDataType(field),
                                GPBDataTypeGroup),
            @"Attempting to set field %@ of %@ which is of type %@ with "
            @"value of type GPBMessage.",
            [self class], field.name,
            TypeToString(GPBGetFieldDataType(field)));
#endif
1344 1345 1346
  GPBSetObjectIvarWithField(self, field, (id)value);
}

1347
//%PDDM-EXPAND-END (4 expansions)
1348

1349
// GPBGetMessageRepeatedField is defined in GPBMessage.m
1350 1351

// Only exists for public api, no core code should use this.
1352
void GPBSetMessageRepeatedField(GPBMessage *self, GPBFieldDescriptor *field, id array) {
1353
#if defined(DEBUG) && DEBUG
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391
  if (field.fieldType != GPBFieldTypeRepeated) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@ is not a repeated field.",
                       [self class], field.name];
  }
  Class expectedClass = Nil;
  switch (GPBGetFieldDataType(field)) {
    case GPBDataTypeBool:
      expectedClass = [GPBBoolArray class];
      break;
    case GPBDataTypeSFixed32:
    case GPBDataTypeInt32:
    case GPBDataTypeSInt32:
      expectedClass = [GPBInt32Array class];
      break;
    case GPBDataTypeFixed32:
    case GPBDataTypeUInt32:
      expectedClass = [GPBUInt32Array class];
      break;
    case GPBDataTypeSFixed64:
    case GPBDataTypeInt64:
    case GPBDataTypeSInt64:
      expectedClass = [GPBInt64Array class];
      break;
    case GPBDataTypeFixed64:
    case GPBDataTypeUInt64:
      expectedClass = [GPBUInt64Array class];
      break;
    case GPBDataTypeFloat:
      expectedClass = [GPBFloatArray class];
      break;
    case GPBDataTypeDouble:
      expectedClass = [GPBDoubleArray class];
      break;
    case GPBDataTypeBytes:
    case GPBDataTypeString:
    case GPBDataTypeMessage:
    case GPBDataTypeGroup:
1392
      expectedClass = [NSMutableArray class];
1393 1394
      break;
    case GPBDataTypeEnum:
1395
      expectedClass = [GPBEnumArray class];
1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406
      break;
  }
  if (array && ![array isKindOfClass:expectedClass]) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@: Expected %@ object, got %@.",
                       [self class], field.name, expectedClass, [array class]];
  }
#endif
  GPBSetObjectIvarWithField(self, field, array);
}

1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440
static GPBDataType BaseDataType(GPBDataType type) {
  switch (type) {
    case GPBDataTypeSFixed32:
    case GPBDataTypeInt32:
    case GPBDataTypeSInt32:
    case GPBDataTypeEnum:
      return GPBDataTypeInt32;
    case GPBDataTypeFixed32:
    case GPBDataTypeUInt32:
      return GPBDataTypeUInt32;
    case GPBDataTypeSFixed64:
    case GPBDataTypeInt64:
    case GPBDataTypeSInt64:
      return GPBDataTypeInt64;
    case GPBDataTypeFixed64:
    case GPBDataTypeUInt64:
      return GPBDataTypeUInt64;
    case GPBDataTypeMessage:
    case GPBDataTypeGroup:
      return GPBDataTypeMessage;
    case GPBDataTypeBool:
    case GPBDataTypeFloat:
    case GPBDataTypeDouble:
    case GPBDataTypeBytes:
    case GPBDataTypeString:
      return type;
   }
}

static BOOL DataTypesEquivalent(GPBDataType type1, GPBDataType type2) {
  return BaseDataType(type1) == BaseDataType(type2);
}

static NSString *TypeToString(GPBDataType dataType) {
1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467
  switch (dataType) {
    case GPBDataTypeBool:
      return @"Bool";
    case GPBDataTypeSFixed32:
    case GPBDataTypeInt32:
    case GPBDataTypeSInt32:
      return @"Int32";
    case GPBDataTypeFixed32:
    case GPBDataTypeUInt32:
      return @"UInt32";
    case GPBDataTypeSFixed64:
    case GPBDataTypeInt64:
    case GPBDataTypeSInt64:
      return @"Int64";
    case GPBDataTypeFixed64:
    case GPBDataTypeUInt64:
      return @"UInt64";
    case GPBDataTypeFloat:
      return @"Float";
    case GPBDataTypeDouble:
      return @"Double";
    case GPBDataTypeBytes:
    case GPBDataTypeString:
    case GPBDataTypeMessage:
    case GPBDataTypeGroup:
      return @"Object";
    case GPBDataTypeEnum:
1468
      return @"Enum";
1469
  }
1470 1471
}

1472
// GPBGetMessageMapField is defined in GPBMessage.m
1473 1474

// Only exists for public api, no core code should use this.
1475 1476
void GPBSetMessageMapField(GPBMessage *self, GPBFieldDescriptor *field,
                           id dictionary) {
1477
#if defined(DEBUG) && DEBUG
1478 1479 1480 1481 1482 1483 1484 1485
  if (field.fieldType != GPBFieldTypeMap) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@ is not a map<> field.",
                       [self class], field.name];
  }
  if (dictionary) {
    GPBDataType keyDataType = field.mapKeyDataType;
    GPBDataType valueDataType = GPBGetFieldDataType(field);
1486 1487
    NSString *keyStr = TypeToString(keyDataType);
    NSString *valueStr = TypeToString(valueDataType);
1488 1489 1490 1491 1492 1493 1494
    if (keyDataType == GPBDataTypeString) {
      keyStr = @"String";
    }
    Class expectedClass = Nil;
    if ((keyDataType == GPBDataTypeString) &&
        GPBDataTypeIsObject(valueDataType)) {
      expectedClass = [NSMutableDictionary class];
1495
    } else {
1496 1497 1498 1499
      NSString *className =
          [NSString stringWithFormat:@"GPB%@%@Dictionary", keyStr, valueStr];
      expectedClass = NSClassFromString(className);
      NSCAssert(expectedClass, @"Missing a class (%@)?", expectedClass);
1500
    }
1501 1502 1503 1504 1505
    if (![dictionary isKindOfClass:expectedClass]) {
      [NSException raise:NSInvalidArgumentException
                  format:@"%@.%@: Expected %@ object, got %@.",
                         [self class], field.name, expectedClass,
                         [dictionary class]];
1506 1507
    }
  }
1508 1509
#endif
  GPBSetObjectIvarWithField(self, field, dictionary);
1510 1511
}

1512
#pragma mark - Misc Dynamic Runtime Utils
1513 1514 1515 1516

const char *GPBMessageEncodingForSelector(SEL selector, BOOL instanceSel) {
  Protocol *protocol =
      objc_getProtocol(GPBStringifySymbol(GPBMessageSignatureProtocol));
1517
  NSCAssert(protocol, @"Missing GPBMessageSignatureProtocol");
1518 1519
  struct objc_method_description description =
      protocol_getMethodDescription(protocol, selector, NO, instanceSel);
1520 1521
  NSCAssert(description.name != Nil && description.types != nil,
            @"Missing method for selector %@", NSStringFromSelector(selector));
1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
  return description.types;
}

#pragma mark - Text Format Support

static void AppendStringEscaped(NSString *toPrint, NSMutableString *destStr) {
  [destStr appendString:@"\""];
  NSUInteger len = [toPrint length];
  for (NSUInteger i = 0; i < len; ++i) {
    unichar aChar = [toPrint characterAtIndex:i];
    switch (aChar) {
      case '\n': [destStr appendString:@"\\n"];  break;
      case '\r': [destStr appendString:@"\\r"];  break;
      case '\t': [destStr appendString:@"\\t"];  break;
      case '\"': [destStr appendString:@"\\\""]; break;
      case '\'': [destStr appendString:@"\\\'"]; break;
      case '\\': [destStr appendString:@"\\\\"]; break;
      default:
1540 1541 1542 1543 1544 1545 1546 1547 1548
        // This differs slightly from the C++ code in that the C++ doesn't
        // generate UTF8; it looks at the string in UTF8, but escapes every
        // byte > 0x7E.
        if (aChar < 0x20) {
          [destStr appendFormat:@"\\%d%d%d",
                                (aChar / 64), ((aChar % 64) / 8), (aChar % 8)];
        } else {
          [destStr appendFormat:@"%C", aChar];
        }
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584
        break;
    }
  }
  [destStr appendString:@"\""];
}

static void AppendBufferAsString(NSData *buffer, NSMutableString *destStr) {
  const char *src = (const char *)[buffer bytes];
  size_t srcLen = [buffer length];
  [destStr appendString:@"\""];
  for (const char *srcEnd = src + srcLen; src < srcEnd; src++) {
    switch (*src) {
      case '\n': [destStr appendString:@"\\n"];  break;
      case '\r': [destStr appendString:@"\\r"];  break;
      case '\t': [destStr appendString:@"\\t"];  break;
      case '\"': [destStr appendString:@"\\\""]; break;
      case '\'': [destStr appendString:@"\\\'"]; break;
      case '\\': [destStr appendString:@"\\\\"]; break;
      default:
        if (isprint(*src)) {
          [destStr appendFormat:@"%c", *src];
        } else {
          // NOTE: doing hex means you have to worry about the letter after
          // the hex being another hex char and forcing that to be escaped, so
          // use octal to keep it simple.
          [destStr appendFormat:@"\\%03o", (uint8_t)(*src)];
        }
        break;
    }
  }
  [destStr appendString:@"\""];
}

static void AppendTextFormatForMapMessageField(
    id map, GPBFieldDescriptor *field, NSMutableString *toStr,
    NSString *lineIndent, NSString *fieldName, NSString *lineEnding) {
1585 1586 1587
  GPBDataType keyDataType = field.mapKeyDataType;
  GPBDataType valueDataType = GPBGetFieldDataType(field);
  BOOL isMessageValue = GPBDataTypeIsMessage(valueDataType);
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600

  NSString *msgStartFirst =
      [NSString stringWithFormat:@"%@%@ {%@\n", lineIndent, fieldName, lineEnding];
  NSString *msgStart =
      [NSString stringWithFormat:@"%@%@ {\n", lineIndent, fieldName];
  NSString *msgEnd = [NSString stringWithFormat:@"%@}\n", lineIndent];

  NSString *keyLine = [NSString stringWithFormat:@"%@  key: ", lineIndent];
  NSString *valueLine = [NSString stringWithFormat:@"%@  value%s ", lineIndent,
                                                   (isMessageValue ? "" : ":")];

  __block BOOL isFirst = YES;

1601 1602
  if ((keyDataType == GPBDataTypeString) &&
      GPBDataTypeIsObject(valueDataType)) {
1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
    // map is an NSDictionary.
    NSDictionary *dict = map;
    [dict enumerateKeysAndObjectsUsingBlock:^(NSString *key, id value, BOOL *stop) {
      #pragma unused(stop)
      [toStr appendString:(isFirst ? msgStartFirst : msgStart)];
      isFirst = NO;

      [toStr appendString:keyLine];
      AppendStringEscaped(key, toStr);
      [toStr appendString:@"\n"];

      [toStr appendString:valueLine];
1615 1616
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wswitch-enum"
1617 1618
      switch (valueDataType) {
        case GPBDataTypeString:
1619 1620 1621
          AppendStringEscaped(value, toStr);
          break;

1622
        case GPBDataTypeBytes:
1623 1624 1625
          AppendBufferAsString(value, toStr);
          break;

1626
        case GPBDataTypeMessage:
1627 1628 1629 1630 1631 1632 1633 1634 1635 1636
          [toStr appendString:@"{\n"];
          NSString *subIndent = [lineIndent stringByAppendingString:@"    "];
          AppendTextFormatForMessage(value, toStr, subIndent);
          [toStr appendFormat:@"%@  }", lineIndent];
          break;

        default:
          NSCAssert(NO, @"Can't happen");
          break;
      }
1637
#pragma clang diagnostic pop
1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649
      [toStr appendString:@"\n"];

      [toStr appendString:msgEnd];
    }];
  } else {
    // map is one of the GPB*Dictionary classes, type doesn't matter.
    GPBInt32Int32Dictionary *dict = map;
    [dict enumerateForTextFormat:^(id keyObj, id valueObj) {
      [toStr appendString:(isFirst ? msgStartFirst : msgStart)];
      isFirst = NO;

      // Key always is a NSString.
1650
      if (keyDataType == GPBDataTypeString) {
1651 1652 1653 1654 1655 1656 1657 1658
        [toStr appendString:keyLine];
        AppendStringEscaped(keyObj, toStr);
        [toStr appendString:@"\n"];
      } else {
        [toStr appendFormat:@"%@%@\n", keyLine, keyObj];
      }

      [toStr appendString:valueLine];
1659 1660
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wswitch-enum"
1661 1662
      switch (valueDataType) {
        case GPBDataTypeString:
1663 1664 1665
          AppendStringEscaped(valueObj, toStr);
          break;

1666
        case GPBDataTypeBytes:
1667 1668 1669
          AppendBufferAsString(valueObj, toStr);
          break;

1670
        case GPBDataTypeMessage:
1671 1672 1673 1674 1675 1676
          [toStr appendString:@"{\n"];
          NSString *subIndent = [lineIndent stringByAppendingString:@"    "];
          AppendTextFormatForMessage(valueObj, toStr, subIndent);
          [toStr appendFormat:@"%@  }", lineIndent];
          break;

1677
        case GPBDataTypeEnum: {
1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
          int32_t enumValue = [valueObj intValue];
          NSString *valueStr = nil;
          GPBEnumDescriptor *descriptor = field.enumDescriptor;
          if (descriptor) {
            valueStr = [descriptor textFormatNameForValue:enumValue];
          }
          if (valueStr) {
            [toStr appendString:valueStr];
          } else {
            [toStr appendFormat:@"%d", enumValue];
          }
          break;
        }

        default:
1693
          NSCAssert(valueDataType != GPBDataTypeGroup, @"Can't happen");
1694 1695 1696 1697
          // Everything else is a NSString.
          [toStr appendString:valueObj];
          break;
      }
1698
#pragma clang diagnostic pop
1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709
      [toStr appendString:@"\n"];

      [toStr appendString:msgEnd];
    }];
  }
}

static void AppendTextFormatForMessageField(GPBMessage *message,
                                            GPBFieldDescriptor *field,
                                            NSMutableString *toStr,
                                            NSString *lineIndent) {
1710 1711
  id arrayOrMap;
  NSUInteger count;
1712 1713 1714
  GPBFieldType fieldType = field.fieldType;
  switch (fieldType) {
    case GPBFieldTypeSingle:
1715 1716
      arrayOrMap = nil;
      count = (GPBGetHasIvarField(message, field) ? 1 : 0);
1717 1718 1719
      break;

    case GPBFieldTypeRepeated:
1720 1721 1722 1723
      // Will be NSArray or GPB*Array, type doesn't matter, they both
      // implement count.
      arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(message, field);
      count = [(NSArray *)arrayOrMap count];
1724 1725 1726
      break;

    case GPBFieldTypeMap: {
1727 1728 1729 1730
      // Will be GPB*Dictionary or NSMutableDictionary, type doesn't matter,
      // they both implement count.
      arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(message, field);
      count = [(NSDictionary *)arrayOrMap count];
1731 1732 1733 1734
      break;
    }
  }

1735
  if (count == 0) {
1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747
    // Nothing to print, out of here.
    return;
  }

  NSString *lineEnding = @"";

  // If the name can't be reversed or support for extra info was turned off,
  // this can return nil.
  NSString *fieldName = [field textFormatName];
  if ([fieldName length] == 0) {
    fieldName = [NSString stringWithFormat:@"%u", GPBFieldNumber(field)];
    // If there is only one entry, put the objc name as a comment, other wise
1748
    // add it before the repeated values.
1749
    if (count > 1) {
1750 1751 1752 1753 1754 1755 1756
      [toStr appendFormat:@"%@# %@\n", lineIndent, field.name];
    } else {
      lineEnding = [NSString stringWithFormat:@"  # %@", field.name];
    }
  }

  if (fieldType == GPBFieldTypeMap) {
1757
    AppendTextFormatForMapMessageField(arrayOrMap, field, toStr, lineIndent,
1758 1759 1760 1761
                                       fieldName, lineEnding);
    return;
  }

1762
  id array = arrayOrMap;
1763 1764
  const BOOL isRepeated = (array != nil);

1765 1766
  GPBDataType fieldDataType = GPBGetFieldDataType(field);
  BOOL isMessageField = GPBDataTypeIsMessage(fieldDataType);
1767
  for (NSUInteger j = 0; j < count; ++j) {
1768 1769 1770 1771 1772 1773
    // Start the line.
    [toStr appendFormat:@"%@%@%s ", lineIndent, fieldName,
                        (isMessageField ? "" : ":")];

    // The value.
    switch (fieldDataType) {
1774 1775 1776 1777 1778 1779
#define FIELD_CASE(GPBDATATYPE, CTYPE, REAL_TYPE, ...)                        \
  case GPBDataType##GPBDATATYPE: {                                            \
    CTYPE v = (isRepeated ? [(GPB##REAL_TYPE##Array *)array valueAtIndex:j]   \
                          : GPBGetMessage##REAL_TYPE##Field(message, field)); \
    [toStr appendFormat:__VA_ARGS__, v];                                      \
    break;                                                                    \
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796
  }

      FIELD_CASE(Int32, int32_t, Int32, @"%d")
      FIELD_CASE(SInt32, int32_t, Int32, @"%d")
      FIELD_CASE(SFixed32, int32_t, Int32, @"%d")
      FIELD_CASE(UInt32, uint32_t, UInt32, @"%u")
      FIELD_CASE(Fixed32, uint32_t, UInt32, @"%u")
      FIELD_CASE(Int64, int64_t, Int64, @"%lld")
      FIELD_CASE(SInt64, int64_t, Int64, @"%lld")
      FIELD_CASE(SFixed64, int64_t, Int64, @"%lld")
      FIELD_CASE(UInt64, uint64_t, UInt64, @"%llu")
      FIELD_CASE(Fixed64, uint64_t, UInt64, @"%llu")
      FIELD_CASE(Float, float, Float, @"%.*g", FLT_DIG)
      FIELD_CASE(Double, double, Double, @"%.*lg", DBL_DIG)

#undef FIELD_CASE

1797
      case GPBDataTypeEnum: {
1798
        int32_t v = (isRepeated ? [(GPBEnumArray *)array rawValueAtIndex:j]
1799
                                : GPBGetMessageInt32Field(message, field));
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812
        NSString *valueStr = nil;
        GPBEnumDescriptor *descriptor = field.enumDescriptor;
        if (descriptor) {
          valueStr = [descriptor textFormatNameForValue:v];
        }
        if (valueStr) {
          [toStr appendString:valueStr];
        } else {
          [toStr appendFormat:@"%d", v];
        }
        break;
      }

1813
      case GPBDataTypeBool: {
1814
        BOOL v = (isRepeated ? [(GPBBoolArray *)array valueAtIndex:j]
1815
                             : GPBGetMessageBoolField(message, field));
1816 1817 1818 1819
        [toStr appendString:(v ? @"true" : @"false")];
        break;
      }

1820
      case GPBDataTypeString: {
1821
        NSString *v = (isRepeated ? [(NSArray *)array objectAtIndex:j]
1822
                                  : GPBGetMessageStringField(message, field));
1823 1824 1825 1826
        AppendStringEscaped(v, toStr);
        break;
      }

1827
      case GPBDataTypeBytes: {
1828
        NSData *v = (isRepeated ? [(NSArray *)array objectAtIndex:j]
1829
                                : GPBGetMessageBytesField(message, field));
1830 1831 1832 1833
        AppendBufferAsString(v, toStr);
        break;
      }

1834 1835
      case GPBDataTypeGroup:
      case GPBDataTypeMessage: {
1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851
        GPBMessage *v =
            (isRepeated ? [(NSArray *)array objectAtIndex:j]
                        : GPBGetObjectIvarWithField(message, field));
        [toStr appendFormat:@"{%@\n", lineEnding];
        NSString *subIndent = [lineIndent stringByAppendingString:@"  "];
        AppendTextFormatForMessage(v, toStr, subIndent);
        [toStr appendFormat:@"%@}", lineIndent];
        lineEnding = @"";
        break;
      }

    }  // switch(fieldDataType)

    // End the line.
    [toStr appendFormat:@"%@\n", lineEnding];

1852
  }  // for(count)
1853 1854 1855 1856 1857 1858 1859 1860 1861
}

static void AppendTextFormatForMessageExtensionRange(GPBMessage *message,
                                                     NSArray *activeExtensions,
                                                     GPBExtensionRange range,
                                                     NSMutableString *toStr,
                                                     NSString *lineIndent) {
  uint32_t start = range.start;
  uint32_t end = range.end;
1862
  for (GPBExtensionDescriptor *extension in activeExtensions) {
1863 1864 1865 1866 1867
    uint32_t fieldNumber = extension.fieldNumber;
    if (fieldNumber < start) {
      // Not there yet.
      continue;
    }
1868
    if (fieldNumber >= end) {
1869 1870 1871 1872 1873
      // Done.
      break;
    }

    id rawExtValue = [message getExtension:extension];
1874
    BOOL isRepeated = extension.isRepeated;
1875 1876 1877 1878 1879 1880 1881

    NSUInteger numValues = 1;
    NSString *lineEnding = @"";
    if (isRepeated) {
      numValues = [(NSArray *)rawExtValue count];
    }

1882
    NSString *singletonName = extension.singletonName;
1883 1884 1885 1886 1887 1888
    if (numValues == 1) {
      lineEnding = [NSString stringWithFormat:@"  # [%@]", singletonName];
    } else {
      [toStr appendFormat:@"%@# [%@]\n", lineIndent, singletonName];
    }

1889
    GPBDataType extDataType = extension.dataType;
1890 1891 1892 1893 1894
    for (NSUInteger j = 0; j < numValues; ++j) {
      id curValue = (isRepeated ? [rawExtValue objectAtIndex:j] : rawExtValue);

      // Start the line.
      [toStr appendFormat:@"%@%u%s ", lineIndent, fieldNumber,
1895
                          (GPBDataTypeIsMessage(extDataType) ? "" : ":")];
1896 1897

      // The value.
1898 1899 1900 1901 1902 1903
      switch (extDataType) {
#define FIELD_CASE(GPBDATATYPE, CTYPE, NUMSELECTOR, ...) \
  case GPBDataType##GPBDATATYPE: {                       \
    CTYPE v = [(NSNumber *)curValue NUMSELECTOR];        \
    [toStr appendFormat:__VA_ARGS__, v];                 \
    break;                                               \
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926
  }

        FIELD_CASE(Int32, int32_t, intValue, @"%d")
        FIELD_CASE(SInt32, int32_t, intValue, @"%d")
        FIELD_CASE(SFixed32, int32_t, unsignedIntValue, @"%d")
        FIELD_CASE(UInt32, uint32_t, unsignedIntValue, @"%u")
        FIELD_CASE(Fixed32, uint32_t, unsignedIntValue, @"%u")
        FIELD_CASE(Int64, int64_t, longLongValue, @"%lld")
        FIELD_CASE(SInt64, int64_t, longLongValue, @"%lld")
        FIELD_CASE(SFixed64, int64_t, longLongValue, @"%lld")
        FIELD_CASE(UInt64, uint64_t, unsignedLongLongValue, @"%llu")
        FIELD_CASE(Fixed64, uint64_t, unsignedLongLongValue, @"%llu")
        FIELD_CASE(Float, float, floatValue, @"%.*g", FLT_DIG)
        FIELD_CASE(Double, double, doubleValue, @"%.*lg", DBL_DIG)
        // TODO: Add a comment with the enum name from enum descriptors
        // (might not be real value, so leave it as a comment, ObjC compiler
        // name mangles differently).  Doesn't look like we actually generate
        // an enum descriptor reference like we do for normal fields, so this
        // will take a compiler change.
        FIELD_CASE(Enum, int32_t, intValue, @"%d")

#undef FIELD_CASE

1927
        case GPBDataTypeBool:
1928 1929 1930 1931
          [toStr appendString:([(NSNumber *)curValue boolValue] ? @"true"
                                                                : @"false")];
          break;

1932
        case GPBDataTypeString:
1933 1934 1935
          AppendStringEscaped(curValue, toStr);
          break;

1936
        case GPBDataTypeBytes:
1937 1938 1939
          AppendBufferAsString((NSData *)curValue, toStr);
          break;

1940 1941
        case GPBDataTypeGroup:
        case GPBDataTypeMessage: {
1942 1943 1944 1945 1946 1947 1948 1949
          [toStr appendFormat:@"{%@\n", lineEnding];
          NSString *subIndent = [lineIndent stringByAppendingString:@"  "];
          AppendTextFormatForMessage(curValue, toStr, subIndent);
          [toStr appendFormat:@"%@}", lineIndent];
          lineEnding = @"";
          break;
        }

1950
      }  // switch(extDataType)
1951

1952 1953
      // End the line.
      [toStr appendFormat:@"%@\n", lineEnding];
1954

1955
    }  //  for(numValues)
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967

  }  // for..in(activeExtensions)
}

static void AppendTextFormatForMessage(GPBMessage *message,
                                       NSMutableString *toStr,
                                       NSString *lineIndent) {
  GPBDescriptor *descriptor = [message descriptor];
  NSArray *fieldsArray = descriptor->fields_;
  NSUInteger fieldCount = fieldsArray.count;
  const GPBExtensionRange *extensionRanges = descriptor.extensionRanges;
  NSUInteger extensionRangesCount = descriptor.extensionRangesCount;
1968 1969
  NSArray *activeExtensions = [[message extensionsCurrentlySet]
      sortedArrayUsingSelector:@selector(compareByFieldNumber:)];
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
  for (NSUInteger i = 0, j = 0; i < fieldCount || j < extensionRangesCount;) {
    if (i == fieldCount) {
      AppendTextFormatForMessageExtensionRange(
          message, activeExtensions, extensionRanges[j++], toStr, lineIndent);
    } else if (j == extensionRangesCount ||
               GPBFieldNumber(fieldsArray[i]) < extensionRanges[j].start) {
      AppendTextFormatForMessageField(message, fieldsArray[i++], toStr,
                                      lineIndent);
    } else {
      AppendTextFormatForMessageExtensionRange(
          message, activeExtensions, extensionRanges[j++], toStr, lineIndent);
    }
  }

  NSString *unknownFieldsStr =
      GPBTextFormatForUnknownFieldSet(message.unknownFields, lineIndent);
  if ([unknownFieldsStr length] > 0) {
    [toStr appendFormat:@"%@# --- Unknown fields ---\n", lineIndent];
    [toStr appendString:unknownFieldsStr];
  }
}

NSString *GPBTextFormatForMessage(GPBMessage *message, NSString *lineIndent) {
1993
  if (message == nil) return @"";
1994 1995 1996 1997 1998 1999 2000 2001 2002
  if (lineIndent == nil) lineIndent = @"";

  NSMutableString *buildString = [NSMutableString string];
  AppendTextFormatForMessage(message, buildString, lineIndent);
  return buildString;
}

NSString *GPBTextFormatForUnknownFieldSet(GPBUnknownFieldSet *unknownSet,
                                          NSString *lineIndent) {
2003
  if (unknownSet == nil) return @"";
2004 2005 2006
  if (lineIndent == nil) lineIndent = @"";

  NSMutableString *result = [NSMutableString string];
2007
  for (GPBUnknownField *field in [unknownSet sortedFields]) {
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046
    int32_t fieldNumber = [field number];

#define PRINT_LOOP(PROPNAME, CTYPE, FORMAT)                                   \
  [field.PROPNAME                                                             \
      enumerateValuesWithBlock:^(CTYPE value, NSUInteger idx, BOOL * stop) {  \
    _Pragma("unused(idx, stop)");                                             \
    [result                                                                   \
        appendFormat:@"%@%d: " #FORMAT "\n", lineIndent, fieldNumber, value]; \
      }];

    PRINT_LOOP(varintList, uint64_t, %llu);
    PRINT_LOOP(fixed32List, uint32_t, 0x%X);
    PRINT_LOOP(fixed64List, uint64_t, 0x%llX);

#undef PRINT_LOOP

    // NOTE: C++ version of TextFormat tries to parse this as a message
    // and print that if it succeeds.
    for (NSData *data in field.lengthDelimitedList) {
      [result appendFormat:@"%@%d: ", lineIndent, fieldNumber];
      AppendBufferAsString(data, result);
      [result appendString:@"\n"];
    }

    for (GPBUnknownFieldSet *subUnknownSet in field.groupList) {
      [result appendFormat:@"%@%d: {\n", lineIndent, fieldNumber];
      NSString *subIndent = [lineIndent stringByAppendingString:@"  "];
      NSString *subUnknwonSetStr =
          GPBTextFormatForUnknownFieldSet(subUnknownSet, subIndent);
      [result appendString:subUnknwonSetStr];
      [result appendFormat:@"%@}\n", lineIndent];
    }
  }
  return result;
}

// Helpers to decode a varint. Not using GPBCodedInputStream version because
// that needs a state object, and we don't want to create an input stream out
// of the data.
2047
GPB_INLINE int8_t ReadRawByteFromData(const uint8_t **data) {
2048 2049 2050 2051 2052
  int8_t result = *((int8_t *)(*data));
  ++(*data);
  return result;
}

2053
static int32_t ReadRawVarint32FromData(const uint8_t **data) {
2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194
  int8_t tmp = ReadRawByteFromData(data);
  if (tmp >= 0) {
    return tmp;
  }
  int32_t result = tmp & 0x7f;
  if ((tmp = ReadRawByteFromData(data)) >= 0) {
    result |= tmp << 7;
  } else {
    result |= (tmp & 0x7f) << 7;
    if ((tmp = ReadRawByteFromData(data)) >= 0) {
      result |= tmp << 14;
    } else {
      result |= (tmp & 0x7f) << 14;
      if ((tmp = ReadRawByteFromData(data)) >= 0) {
        result |= tmp << 21;
      } else {
        result |= (tmp & 0x7f) << 21;
        result |= (tmp = ReadRawByteFromData(data)) << 28;
        if (tmp < 0) {
          // Discard upper 32 bits.
          for (int i = 0; i < 5; i++) {
            if (ReadRawByteFromData(data) >= 0) {
              return result;
            }
          }
          [NSException raise:NSParseErrorException
                      format:@"Unable to read varint32"];
        }
      }
    }
  }
  return result;
}

NSString *GPBDecodeTextFormatName(const uint8_t *decodeData, int32_t key,
                                  NSString *inputStr) {
  // decodData form:
  //  varint32: num entries
  //  for each entry:
  //    varint32: key
  //    bytes*: decode data
  //
  // decode data one of two forms:
  //  1: a \0 followed by the string followed by an \0
  //  2: bytecodes to transform an input into the right thing, ending with \0
  //
  // the bytes codes are of the form:
  //  0xabbccccc
  //  0x0 (all zeros), end.
  //  a - if set, add an underscore
  //  bb - 00 ccccc bytes as is
  //  bb - 10 ccccc upper first, as is on rest, ccccc byte total
  //  bb - 01 ccccc lower first, as is on rest, ccccc byte total
  //  bb - 11 ccccc all upper, ccccc byte total

  if (!decodeData || !inputStr) {
    return nil;
  }

  // Find key
  const uint8_t *scan = decodeData;
  int32_t numEntries = ReadRawVarint32FromData(&scan);
  BOOL foundKey = NO;
  while (!foundKey && (numEntries > 0)) {
    --numEntries;
    int32_t dataKey = ReadRawVarint32FromData(&scan);
    if (dataKey == key) {
      foundKey = YES;
    } else {
      // If it is a inlined string, it will start with \0; if it is bytecode it
      // will start with a code. So advance one (skipping the inline string
      // marker), and then loop until reaching the end marker (\0).
      ++scan;
      while (*scan != 0) ++scan;
      // Now move past the end marker.
      ++scan;
    }
  }

  if (!foundKey) {
    return nil;
  }

  // Decode

  if (*scan == 0) {
    // Inline string. Move over the marker, and NSString can take it as
    // UTF8.
    ++scan;
    NSString *result = [NSString stringWithUTF8String:(const char *)scan];
    return result;
  }

  NSMutableString *result =
      [NSMutableString stringWithCapacity:[inputStr length]];

  const uint8_t kAddUnderscore  = 0b10000000;
  const uint8_t kOpMask         = 0b01100000;
  // const uint8_t kOpAsIs        = 0b00000000;
  const uint8_t kOpFirstUpper     = 0b01000000;
  const uint8_t kOpFirstLower     = 0b00100000;
  const uint8_t kOpAllUpper       = 0b01100000;
  const uint8_t kSegmentLenMask = 0b00011111;

  NSInteger i = 0;
  for (; *scan != 0; ++scan) {
    if (*scan & kAddUnderscore) {
      [result appendString:@"_"];
    }
    int segmentLen = *scan & kSegmentLenMask;
    uint8_t decodeOp = *scan & kOpMask;

    // Do op specific handling of the first character.
    if (decodeOp == kOpFirstUpper) {
      unichar c = [inputStr characterAtIndex:i];
      [result appendFormat:@"%c", toupper((char)c)];
      ++i;
      --segmentLen;
    } else if (decodeOp == kOpFirstLower) {
      unichar c = [inputStr characterAtIndex:i];
      [result appendFormat:@"%c", tolower((char)c)];
      ++i;
      --segmentLen;
    }
    // else op == kOpAsIs || op == kOpAllUpper

    // Now pull over the rest of the length for this segment.
    for (int x = 0; x < segmentLen; ++x) {
      unichar c = [inputStr characterAtIndex:(i + x)];
      if (decodeOp == kOpAllUpper) {
        [result appendFormat:@"%c", toupper((char)c)];
      } else {
        [result appendFormat:@"%C", c];
      }
    }
    i += segmentLen;
  }

  return result;
}

2195 2196
#pragma clang diagnostic pop

2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214
BOOL GPBClassHasSel(Class aClass, SEL sel) {
  // NOTE: We have to use class_copyMethodList, all other runtime method
  // lookups actually also resolve the method implementation and this
  // is called from within those methods.

  BOOL result = NO;
  unsigned int methodCount = 0;
  Method *methodList = class_copyMethodList(aClass, &methodCount);
  for (unsigned int i = 0; i < methodCount; ++i) {
    SEL methodSelector = method_getName(methodList[i]);
    if (methodSelector == sel) {
      result = YES;
      break;
    }
  }
  free(methodList);
  return result;
}