Squashed 'libs/protobuf/' content from commit fcd3b9a85

git-subtree-dir: libs/protobuf
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php/ext/google/protobuf/def.h

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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.
+
+#ifndef PHP_PROTOBUF_DEF_H_
+#define PHP_PROTOBUF_DEF_H_
+
+#include <php.h>
+
+#include "php-upb.h"
+
+// Initializes the Def module, which defines all of the descriptor classes.
+void Def_ModuleInit();
+
+// Creates a new DescriptorPool to wrap the given symtab, which must not be
+// NULL.
+void DescriptorPool_CreateWithSymbolTable(zval *zv, upb_DefPool *symtab);
+
+upb_DefPool *DescriptorPool_GetSymbolTable();
+
+// Returns true if the global descriptor pool already has the given filename.
+bool DescriptorPool_HasFile(const char *filename);
+
+// Adds the given descriptor with the given filename to the global pool.
+void DescriptorPool_AddDescriptor(const char *filename, const char *data, int size);
+
+typedef struct Descriptor {
+  zend_object std;
+  const upb_MessageDef *msgdef;
+  zend_class_entry *class_entry;
+} Descriptor;
+
+// Gets or creates a Descriptor* for the given class entry, upb_MessageDef, or
+// upb_FieldDef. The returned Descriptor* will live for the entire request,
+// so no ref is necessary to keep it alive. The caller does *not* own a ref
+// on the returned object.
+Descriptor* Descriptor_GetFromClassEntry(zend_class_entry *ce);
+Descriptor* Descriptor_GetFromMessageDef(const upb_MessageDef *m);
+Descriptor* Descriptor_GetFromFieldDef(const upb_FieldDef *f);
+
+// Packages up a upb_CType with a Descriptor, since many functions need
+// both.
+typedef struct {
+  upb_CType type;
+  const Descriptor *desc;  // When type == kUpb_CType_Message.
+} TypeInfo;
+
+static inline TypeInfo TypeInfo_Get(const upb_FieldDef *f) {
+  TypeInfo ret = {upb_FieldDef_CType(f), Descriptor_GetFromFieldDef(f)};
+  return ret;
+}
+
+static inline TypeInfo TypeInfo_FromType(upb_CType type) {
+  TypeInfo ret = {type};
+  return ret;
+}
+
+static inline bool TypeInfo_Eq(TypeInfo a, TypeInfo b) {
+  if (a.type != b.type) return false;
+  if (a.type == kUpb_CType_Message && a.desc != b.desc) return false;
+  return true;
+}
+
+#endif  // PHP_PROTOBUF_DEF_H_