GPBUtilities.m 61.9 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"

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

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 GPBCheckRuntimeVersionInternal(int32_t version) {
  if (version != GOOGLE_PROTOBUF_OBJC_GEN_VERSION) {
    [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;
    uint32_t bitMask = (1 << (idx % 32));
    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;
    uint32_t bitMask = (1 << (idx % 32));
    if (value) {
      has_storage[byte] |= bitMask;
    } else {
      has_storage[byte] &= ~bitMask;
    }
  }
}

void GPBMaybeClearOneof(GPBMessage *self, GPBOneofDescriptor *oneof,
                        uint32_t fieldNumberNotToClear) {
  int32_t hasIndex = oneof->oneofDescription_->index;
  uint32_t fieldNumberSet = GPBGetHasOneof(self, hasIndex);
  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).
  GPBSetHasIvar(self, hasIndex, 1, NO);
}

#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 (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$S                     GPBFileSyntax syntax) {
//%  GPBOneofDescriptor *oneof = field->containingOneof_;
//%  if (oneof) {
//%    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
//%  }
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//%  NSCAssert(self->messageStorage_ != NULL,
//%            @"%@: All messages should have storage (from init)",
//%            [self class]);
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//%#if defined(__clang_analyzer__)
//%  if (self->messageStorage_ == NULL) return;
//%#endif
//%  uint8_t *storage = (uint8_t *)self->messageStorage_;
//%  TYPE *typePtr = (TYPE *)&storage[field->description_->offset];
//%  *typePtr = value;
//%  // proto2: any value counts as having been set; proto3, it
//%  // has to be a non zero value.
//%  BOOL hasValue =
//%    (syntax == GPBFileSyntaxProto2) || (value != (TYPE)0);
//%  GPBSetHasIvarField(self, field, hasValue);
//%  GPBBecomeVisibleToAutocreator(self);
//%}
//%
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//%PDDM-DEFINE IVAR_ALIAS_DEFN_OBJECT(NAME, TYPE)
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//%// Only exists for public api, no core code should use this.
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//%TYPE *GPBGetMessage##NAME##Field(GPBMessage *self,
//% TYPE$S             NAME$S       GPBFieldDescriptor *field) {
//%  return (TYPE *)GPBGetObjectIvarWithField(self, field);
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//%}
//%
//%// Only exists for public api, no core code should use this.
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//%void GPBSetMessage##NAME##Field(GPBMessage *self,
//%                   NAME$S     GPBFieldDescriptor *field,
//%                   NAME$S     TYPE *value) {
//%  GPBSetObjectIvarWithField(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);
}

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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#ifdef DEBUG
  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,
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          (fieldType == GPBDataTypeString) ? @"@\"\"" : @"GPBEmptyNSData()",
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          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) {
      GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
    }
    // Clear "has" if they are being set to nil.
    BOOL setHasValue = (value != nil);
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    // 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.
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    if ((syntax == GPBFileSyntaxProto3) && !fieldIsMessage &&
        ([value length] == 0)) {
      setHasValue = NO;
      value = nil;
    }
    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) {
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        // If the old array was autocreated by us, then clear it.
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        if (GPBDataTypeIsObject(fieldType)) {
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          GPBAutocreatedArray *autoArray = oldValue;
          if (autoArray->_autocreator == self) {
            autoArray->_autocreator = nil;
          }
        } else {
          // Type doesn't matter, it is a GPB*Array.
          GPBInt32Array *gpbArray = oldValue;
          if (gpbArray->_autocreator == self) {
            gpbArray->_autocreator = nil;
          }
        }
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      } else { // GPBFieldTypeMap
        // If the old map was autocreated by us, then clear it.
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        if ((field.mapKeyDataType == GPBDataTypeString) &&
            GPBDataTypeIsObject(fieldType)) {
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          GPBAutocreatedDictionary *autoDict = oldValue;
          if (autoDict->_autocreator == self) {
            autoDict->_autocreator = nil;
          }
        } else {
          // Type doesn't matter, it is a GPB*Dictionary.
          GPBInt32Int32Dictionary *gpbDict = oldValue;
          if (gpbDict->_autocreator == self) {
            gpbDict->_autocreator = nil;
          }
        }
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      }
    } 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;
}

id GPBGetObjectIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
  NSCAssert(!GPBFieldIsMapOrArray(field), @"Shouldn't get here");
  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    id *typePtr = (id *)&storage[field->description_->offset];
    return *typePtr;
  }
  // Not set...

  // Non messages (string/data), get their default.
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  if (!GPBFieldDataTypeIsMessage(field)) {
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    return field.defaultValue.valueMessage;
  }

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  dispatch_semaphore_wait(self->readOnlySemaphore_, DISPATCH_TIME_FOREVER);
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  GPBMessage *result = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
  if (!result) {
    // For non repeated messages, create the object, set it and return it.
    // This object will not initially be visible via GPBGetHasIvar, so
    // we save its creator so it can become visible if it's mutated later.
    result = GPBCreateMessageWithAutocreator(field.msgClass, self, field);
    GPBSetAutocreatedRetainedObjectIvarWithField(self, field, result);
  }
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  dispatch_semaphore_signal(self->readOnlySemaphore_);
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  return result;
}

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

int32_t GPBGetEnumIvarWithFieldInternal(GPBMessage *self,
                                        GPBFieldDescriptor *field,
                                        GPBFileSyntax syntax) {
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  int32_t result = GPBGetMessageInt32Field(self, field);
  // If this is presevering unknown enums, make sure the value is valid before
  // returning it.
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  if (GPBHasPreservingUnknownEnumSemantics(syntax) &&
      ![field isValidEnumValue:result]) {
    result = kGPBUnrecognizedEnumeratorValue;
  }
  return result;
}

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

void GPBSetEnumIvarWithFieldInternal(GPBMessage *self,
                                     GPBFieldDescriptor *field, int32_t value,
                                     GPBFileSyntax syntax) {
  // 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);
}

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// 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);
}

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

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BOOL GPBGetMessageBoolField(GPBMessage *self,
                            GPBFieldDescriptor *field) {
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  if (GPBGetHasIvarField(self, field)) {
    uint8_t *storage = (uint8_t *)self->messageStorage_;
    BOOL *typePtr = (BOOL *)&storage[field->description_->offset];
    return *typePtr;
  } else {
    return field.defaultValue.valueBool;
  }
}

// Only exists for public api, no core code should use this.
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void GPBSetMessageBoolField(GPBMessage *self,
                            GPBFieldDescriptor *field,
                            BOOL value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  uint8_t *storage = (uint8_t *)self->messageStorage_;
  BOOL *typePtr = (BOOL *)&storage[field->description_->offset];
  *typePtr = value;
  // proto2: any value counts as having been set; proto3, it
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (BOOL)0);
  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.

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int32_t GPBGetMessageInt32Field(GPBMessage *self,
                                GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageInt32Field(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             int32_t value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (int32_t)0);
  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.

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uint32_t GPBGetMessageUInt32Field(GPBMessage *self,
                                  GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageUInt32Field(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              uint32_t value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (uint32_t)0);
  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.

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int64_t GPBGetMessageInt64Field(GPBMessage *self,
                                GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageInt64Field(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             int64_t value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (int64_t)0);
  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.

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uint64_t GPBGetMessageUInt64Field(GPBMessage *self,
                                  GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageUInt64Field(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              uint64_t value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (uint64_t)0);
  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.

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float GPBGetMessageFloatField(GPBMessage *self,
                              GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageFloatField(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             float value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (float)0);
  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.

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double GPBGetMessageDoubleField(GPBMessage *self,
                                GPBFieldDescriptor *field) {
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  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.
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void GPBSetMessageDoubleField(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              double value) {
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  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) {
  GPBOneofDescriptor *oneof = field->containingOneof_;
  if (oneof) {
    GPBMaybeClearOneof(self, oneof, GPBFieldNumber(field));
  }
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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
  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
  // has to be a non zero value.
  BOOL hasValue =
    (syntax == GPBFileSyntaxProto2) || (value != (double)0);
  GPBSetHasIvarField(self, field, hasValue);
  GPBBecomeVisibleToAutocreator(self);
}

//%PDDM-EXPAND-END (7 expansions)

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

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//%PDDM-EXPAND IVAR_ALIAS_DEFN_OBJECT(String, NSString)
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// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
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NSString *GPBGetMessageStringField(GPBMessage *self,
                                   GPBFieldDescriptor *field) {
  return (NSString *)GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageStringField(GPBMessage *self,
                              GPBFieldDescriptor *field,
                              NSString *value) {
  GPBSetObjectIvarWithField(self, field, (id)value);
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}

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//%PDDM-EXPAND IVAR_ALIAS_DEFN_OBJECT(Bytes, NSData)
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// This block of code is generated, do not edit it directly.

// Only exists for public api, no core code should use this.
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NSData *GPBGetMessageBytesField(GPBMessage *self,
                                GPBFieldDescriptor *field) {
  return (NSData *)GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageBytesField(GPBMessage *self,
                             GPBFieldDescriptor *field,
                             NSData *value) {
  GPBSetObjectIvarWithField(self, field, (id)value);
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}

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

// Only exists for public api, no core code should use this.
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GPBMessage *GPBGetMessageMessageField(GPBMessage *self,
                                      GPBFieldDescriptor *field) {
  return (GPBMessage *)GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageMessageField(GPBMessage *self,
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                               GPBFieldDescriptor *field,
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                               GPBMessage *value) {
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  GPBSetObjectIvarWithField(self, field, (id)value);
}

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

// Only exists for public api, no core code should use this.
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GPBMessage *GPBGetMessageGroupField(GPBMessage *self,
                                    GPBFieldDescriptor *field) {
  return (GPBMessage *)GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageGroupField(GPBMessage *self,
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                             GPBFieldDescriptor *field,
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                             GPBMessage *value) {
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  GPBSetObjectIvarWithField(self, field, (id)value);
}

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//%PDDM-EXPAND-END (4 expansions)
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// Only exists for public api, no core code should use this.
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id GPBGetMessageRepeatedField(GPBMessage *self, GPBFieldDescriptor *field) {
#if DEBUG
  if (field.fieldType != GPBFieldTypeRepeated) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@ is not a repeated field.",
                       [self class], field.name];
  }
#endif
  return GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageRepeatedField(GPBMessage *self, GPBFieldDescriptor *field, id array) {
#if DEBUG
  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:
      expectedClass = [NSMutableDictionary class];
      break;
    case GPBDataTypeEnum:
      expectedClass = [GPBBoolArray class];
      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);
}

#if DEBUG
static NSString *TypeToStr(GPBDataType dataType) {
  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:
      return @"Bool";
  }
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}
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#endif
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// Only exists for public api, no core code should use this.
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id GPBGetMessageMapField(GPBMessage *self, GPBFieldDescriptor *field) {
#if DEBUG
  if (field.fieldType != GPBFieldTypeMap) {
    [NSException raise:NSInvalidArgumentException
                format:@"%@.%@ is not a map<> field.",
                       [self class], field.name];
  }
#endif
  return GPBGetObjectIvarWithField(self, field);
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}

// Only exists for public api, no core code should use this.
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void GPBSetMessageMapField(GPBMessage *self, GPBFieldDescriptor *field,
                           id dictionary) {
#if DEBUG
  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);
    NSString *keyStr = TypeToStr(keyDataType);
    NSString *valueStr = TypeToStr(valueDataType);
    if (keyDataType == GPBDataTypeString) {
      keyStr = @"String";
    }
    Class expectedClass = Nil;
    if ((keyDataType == GPBDataTypeString) &&
        GPBDataTypeIsObject(valueDataType)) {
      expectedClass = [NSMutableDictionary class];
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    } else {
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      NSString *className =
          [NSString stringWithFormat:@"GPB%@%@Dictionary", keyStr, valueStr];
      expectedClass = NSClassFromString(className);
      NSCAssert(expectedClass, @"Missing a class (%@)?", expectedClass);
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    }
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    if (![dictionary isKindOfClass:expectedClass]) {
      [NSException raise:NSInvalidArgumentException
                  format:@"%@.%@: Expected %@ object, got %@.",
                         [self class], field.name, expectedClass,
                         [dictionary class]];
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    }
  }
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#endif
  GPBSetObjectIvarWithField(self, field, dictionary);
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}

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#pragma mark - Misc Dynamic Runtime Utils
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const char *GPBMessageEncodingForSelector(SEL selector, BOOL instanceSel) {
  Protocol *protocol =
      objc_getProtocol(GPBStringifySymbol(GPBMessageSignatureProtocol));
  struct objc_method_description description =
      protocol_getMethodDescription(protocol, selector, NO, instanceSel);
  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:
        [destStr appendFormat:@"%C", aChar];
        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) {
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  GPBDataType keyDataType = field.mapKeyDataType;
  GPBDataType valueDataType = GPBGetFieldDataType(field);
  BOOL isMessageValue = GPBDataTypeIsMessage(valueDataType);
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  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;

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  if ((keyDataType == GPBDataTypeString) &&
      GPBDataTypeIsObject(valueDataType)) {
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    // 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];
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      switch (valueDataType) {
        case GPBDataTypeString:
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          AppendStringEscaped(value, toStr);
          break;

1134
        case GPBDataTypeBytes:
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          AppendBufferAsString(value, toStr);
          break;

1138
        case GPBDataTypeMessage:
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          [toStr appendString:@"{\n"];
          NSString *subIndent = [lineIndent stringByAppendingString:@"    "];
          AppendTextFormatForMessage(value, toStr, subIndent);
          [toStr appendFormat:@"%@  }", lineIndent];
          break;

        default:
          NSCAssert(NO, @"Can't happen");
          break;
      }
      [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.
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      if (keyDataType == GPBDataTypeString) {
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        [toStr appendString:keyLine];
        AppendStringEscaped(keyObj, toStr);
        [toStr appendString:@"\n"];
      } else {
        [toStr appendFormat:@"%@%@\n", keyLine, keyObj];
      }

      [toStr appendString:valueLine];
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      switch (valueDataType) {
        case GPBDataTypeString:
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          AppendStringEscaped(valueObj, toStr);
          break;

1175
        case GPBDataTypeBytes:
1176 1177 1178
          AppendBufferAsString(valueObj, toStr);
          break;

1179
        case GPBDataTypeMessage:
1180 1181 1182 1183 1184 1185
          [toStr appendString:@"{\n"];
          NSString *subIndent = [lineIndent stringByAppendingString:@"    "];
          AppendTextFormatForMessage(valueObj, toStr, subIndent);
          [toStr appendFormat:@"%@  }", lineIndent];
          break;

1186
        case GPBDataTypeEnum: {
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
          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:
1202
          NSCAssert(valueDataType != GPBDataTypeGroup, @"Can't happen");
1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217
          // Everything else is a NSString.
          [toStr appendString:valueObj];
          break;
      }
      [toStr appendString:@"\n"];

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

static void AppendTextFormatForMessageField(GPBMessage *message,
                                            GPBFieldDescriptor *field,
                                            NSMutableString *toStr,
                                            NSString *lineIndent) {
1218 1219
  id arrayOrMap;
  NSUInteger count;
1220 1221 1222
  GPBFieldType fieldType = field.fieldType;
  switch (fieldType) {
    case GPBFieldTypeSingle:
1223 1224
      arrayOrMap = nil;
      count = (GPBGetHasIvarField(message, field) ? 1 : 0);
1225 1226 1227
      break;

    case GPBFieldTypeRepeated:
1228 1229 1230 1231
      // Will be NSArray or GPB*Array, type doesn't matter, they both
      // implement count.
      arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(message, field);
      count = [(NSArray *)arrayOrMap count];
1232 1233 1234
      break;

    case GPBFieldTypeMap: {
1235 1236 1237 1238
      // Will be GPB*Dictionary or NSMutableDictionary, type doesn't matter,
      // they both implement count.
      arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(message, field);
      count = [(NSDictionary *)arrayOrMap count];
1239 1240 1241 1242
      break;
    }
  }

1243
  if (count == 0) {
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255
    // 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
1256
    // add it before the repeated values.
1257
    if (count > 1) {
1258 1259 1260 1261 1262 1263 1264
      [toStr appendFormat:@"%@# %@\n", lineIndent, field.name];
    } else {
      lineEnding = [NSString stringWithFormat:@"  # %@", field.name];
    }
  }

  if (fieldType == GPBFieldTypeMap) {
1265
    AppendTextFormatForMapMessageField(arrayOrMap, field, toStr, lineIndent,
1266 1267 1268 1269
                                       fieldName, lineEnding);
    return;
  }

1270
  id array = arrayOrMap;
1271 1272
  const BOOL isRepeated = (array != nil);

1273 1274
  GPBDataType fieldDataType = GPBGetFieldDataType(field);
  BOOL isMessageField = GPBDataTypeIsMessage(fieldDataType);
1275
  for (NSUInteger j = 0; j < count; ++j) {
1276 1277 1278 1279 1280 1281
    // Start the line.
    [toStr appendFormat:@"%@%@%s ", lineIndent, fieldName,
                        (isMessageField ? "" : ":")];

    // The value.
    switch (fieldDataType) {
1282 1283 1284 1285 1286 1287
#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;                                                                    \
1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
  }

      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

1305
      case GPBDataTypeEnum: {
1306
        int32_t v = (isRepeated ? [(GPBEnumArray *)array rawValueAtIndex:j]
1307
                                : GPBGetMessageInt32Field(message, field));
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
        NSString *valueStr = nil;
        GPBEnumDescriptor *descriptor = field.enumDescriptor;
        if (descriptor) {
          valueStr = [descriptor textFormatNameForValue:v];
        }
        if (valueStr) {
          [toStr appendString:valueStr];
        } else {
          [toStr appendFormat:@"%d", v];
        }
        break;
      }

1321
      case GPBDataTypeBool: {
1322
        BOOL v = (isRepeated ? [(GPBBoolArray *)array valueAtIndex:j]
1323
                             : GPBGetMessageBoolField(message, field));
1324 1325 1326 1327
        [toStr appendString:(v ? @"true" : @"false")];
        break;
      }

1328
      case GPBDataTypeString: {
1329
        NSString *v = (isRepeated ? [(NSArray *)array objectAtIndex:j]
1330
                                  : GPBGetMessageStringField(message, field));
1331 1332 1333 1334
        AppendStringEscaped(v, toStr);
        break;
      }

1335
      case GPBDataTypeBytes: {
1336
        NSData *v = (isRepeated ? [(NSArray *)array objectAtIndex:j]
1337
                                : GPBGetMessageBytesField(message, field));
1338 1339 1340 1341
        AppendBufferAsString(v, toStr);
        break;
      }

1342 1343
      case GPBDataTypeGroup:
      case GPBDataTypeMessage: {
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
        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];

1360
  }  // for(count)
1361 1362 1363 1364 1365 1366 1367 1368 1369
}

static void AppendTextFormatForMessageExtensionRange(GPBMessage *message,
                                                     NSArray *activeExtensions,
                                                     GPBExtensionRange range,
                                                     NSMutableString *toStr,
                                                     NSString *lineIndent) {
  uint32_t start = range.start;
  uint32_t end = range.end;
1370
  for (GPBExtensionDescriptor *extension in activeExtensions) {
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
    uint32_t fieldNumber = extension.fieldNumber;
    if (fieldNumber < start) {
      // Not there yet.
      continue;
    }
    if (fieldNumber > end) {
      // Done.
      break;
    }

    id rawExtValue = [message getExtension:extension];
1382
    BOOL isRepeated = extension.isRepeated;
1383 1384 1385 1386 1387 1388 1389

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

1390
    NSString *singletonName = extension.singletonName;
1391 1392 1393 1394 1395 1396
    if (numValues == 1) {
      lineEnding = [NSString stringWithFormat:@"  # [%@]", singletonName];
    } else {
      [toStr appendFormat:@"%@# [%@]\n", lineIndent, singletonName];
    }

1397
    GPBDataType extDataType = extension.dataType;
1398 1399 1400 1401 1402
    for (NSUInteger j = 0; j < numValues; ++j) {
      id curValue = (isRepeated ? [rawExtValue objectAtIndex:j] : rawExtValue);

      // Start the line.
      [toStr appendFormat:@"%@%u%s ", lineIndent, fieldNumber,
1403
                          (GPBDataTypeIsMessage(extDataType) ? "" : ":")];
1404 1405

      // The value.
1406 1407 1408 1409 1410 1411
      switch (extDataType) {
#define FIELD_CASE(GPBDATATYPE, CTYPE, NUMSELECTOR, ...) \
  case GPBDataType##GPBDATATYPE: {                       \
    CTYPE v = [(NSNumber *)curValue NUMSELECTOR];        \
    [toStr appendFormat:__VA_ARGS__, v];                 \
    break;                                               \
1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434
  }

        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

1435
        case GPBDataTypeBool:
1436 1437 1438 1439
          [toStr appendString:([(NSNumber *)curValue boolValue] ? @"true"
                                                                : @"false")];
          break;

1440
        case GPBDataTypeString:
1441 1442 1443
          AppendStringEscaped(curValue, toStr);
          break;

1444
        case GPBDataTypeBytes:
1445 1446 1447
          AppendBufferAsString((NSData *)curValue, toStr);
          break;

1448 1449
        case GPBDataTypeGroup:
        case GPBDataTypeMessage: {
1450 1451 1452 1453 1454 1455 1456 1457
          [toStr appendFormat:@"{%@\n", lineEnding];
          NSString *subIndent = [lineIndent stringByAppendingString:@"  "];
          AppendTextFormatForMessage(curValue, toStr, subIndent);
          [toStr appendFormat:@"%@}", lineIndent];
          lineEnding = @"";
          break;
        }

1458
      }  // switch(extDataType)
1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499

    }  //  for(numValues)

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

  }  // 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;
  NSArray *activeExtensions = [message sortedExtensionsInUse];
  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) {
1500
  if (message == nil) return @"";
1501 1502 1503 1504 1505 1506 1507 1508 1509
  if (lineIndent == nil) lineIndent = @"";

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

NSString *GPBTextFormatForUnknownFieldSet(GPBUnknownFieldSet *unknownSet,
                                          NSString *lineIndent) {
1510
  if (unknownSet == nil) return @"";
1511 1512 1513
  if (lineIndent == nil) lineIndent = @"";

  NSMutableString *result = [NSMutableString string];
1514
  for (GPBUnknownField *field in [unknownSet sortedFields]) {
1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553
    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.
1554
GPB_INLINE int8_t ReadRawByteFromData(const uint8_t **data) {
1555 1556 1557 1558 1559
  int8_t result = *((int8_t *)(*data));
  ++(*data);
  return result;
}

1560
static int32_t ReadRawVarint32FromData(const uint8_t **data) {
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
  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;
}

#pragma mark - GPBMessageSignatureProtocol

// A series of selectors that are used solely to get @encoding values
// for them by the dynamic protobuf runtime code. An object using the protocol
// needs to be declared for the protocol to be valid at runtime.
@interface GPBMessageSignatureProtocol : NSObject<GPBMessageSignatureProtocol>
@end
@implementation GPBMessageSignatureProtocol
@end