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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 <Foundation/Foundation.h>
+
+#import "GPBBootstrap.h"
+
+@class GPBEnumDescriptor;
+@class GPBMessage;
+@class GPBInt32Array;
+
+/**
+ * Verifies that a given value can be represented by an enum type.
+ * */
+typedef BOOL (*GPBEnumValidationFunc)(int32_t);
+
+/**
+ * Fetches an EnumDescriptor.
+ * */
+typedef GPBEnumDescriptor *(*GPBEnumDescriptorFunc)(void);
+
+/**
+ * Magic value used at runtime to indicate an enum value that wasn't know at
+ * compile time.
+ * */
+enum {
+ kGPBUnrecognizedEnumeratorValue = (int32_t)0xFBADBEEF,
+};
+
+/**
+ * A union for storing all possible Protobuf values. Note that owner is
+ * responsible for memory management of object types.
+ * */
+typedef union {
+ BOOL valueBool;
+ int32_t valueInt32;
+ int64_t valueInt64;
+ uint32_t valueUInt32;
+ uint64_t valueUInt64;
+ float valueFloat;
+ double valueDouble;
+ GPB_UNSAFE_UNRETAINED NSData *valueData;
+ GPB_UNSAFE_UNRETAINED NSString *valueString;
+ GPB_UNSAFE_UNRETAINED GPBMessage *valueMessage;
+ int32_t valueEnum;
+} GPBGenericValue;
+
+/**
+ * Enum listing the possible data types that a field can contain.
+ *
+ * @note Do not change the order of this enum (or add things to it) without
+ * thinking about it very carefully. There are several things that depend
+ * on the order.
+ * */
+typedef NS_ENUM(uint8_t, GPBDataType) {
+ /** Field contains boolean value(s). */
+ GPBDataTypeBool = 0,
+ /** Field contains unsigned 4 byte value(s). */
+ GPBDataTypeFixed32,
+ /** Field contains signed 4 byte value(s). */
+ GPBDataTypeSFixed32,
+ /** Field contains float value(s). */
+ GPBDataTypeFloat,
+ /** Field contains unsigned 8 byte value(s). */
+ GPBDataTypeFixed64,
+ /** Field contains signed 8 byte value(s). */
+ GPBDataTypeSFixed64,
+ /** Field contains double value(s). */
+ GPBDataTypeDouble,
+ /**
+ * Field contains variable length value(s). Inefficient for encoding negative
+ * numbers – if your field is likely to have negative values, use
+ * GPBDataTypeSInt32 instead.
+ **/
+ GPBDataTypeInt32,
+ /**
+ * Field contains variable length value(s). Inefficient for encoding negative
+ * numbers – if your field is likely to have negative values, use
+ * GPBDataTypeSInt64 instead.
+ **/
+ GPBDataTypeInt64,
+ /** Field contains signed variable length integer value(s). */
+ GPBDataTypeSInt32,
+ /** Field contains signed variable length integer value(s). */
+ GPBDataTypeSInt64,
+ /** Field contains unsigned variable length integer value(s). */
+ GPBDataTypeUInt32,
+ /** Field contains unsigned variable length integer value(s). */
+ GPBDataTypeUInt64,
+ /** Field contains an arbitrary sequence of bytes. */
+ GPBDataTypeBytes,
+ /** Field contains UTF-8 encoded or 7-bit ASCII text. */
+ GPBDataTypeString,
+ /** Field contains message type(s). */
+ GPBDataTypeMessage,
+ /** Field contains message type(s). */
+ GPBDataTypeGroup,
+ /** Field contains enum value(s). */
+ GPBDataTypeEnum,
+};
+
+enum {
+ /**
+ * A count of the number of types in GPBDataType. Separated out from the
+ * GPBDataType enum to avoid warnings regarding not handling GPBDataType_Count
+ * in switch statements.
+ **/
+ GPBDataType_Count = GPBDataTypeEnum + 1
+};
+
+/** An extension range. */
+typedef struct GPBExtensionRange {
+ /** Inclusive. */
+ uint32_t start;
+ /** Exclusive. */
+ uint32_t end;
+} GPBExtensionRange;