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// Protocol Buffers - Google's data interchange format
// Copyright 2014 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#ifndef __GOOGLE_PROTOBUF_RUBY_PROTOBUF_H__
#define __GOOGLE_PROTOBUF_RUBY_PROTOBUF_H__
// Ruby 3+ defines NDEBUG itself, see: https://bugs.ruby-lang.org/issues/18777
#ifdef NDEBUG
#include <ruby.h>
#else
#include <ruby.h>
#undef NDEBUG
#endif
#include <assert.h> // Must be included after the NDEBUG logic above.
#include <ruby/encoding.h>
#include <ruby/vm.h>
#include "defs.h"
#include "ruby-upb.h"
// These operate on a map field (i.e., a repeated field of submessages whose
// submessage type is a map-entry msgdef).
const upb_FieldDef* map_field_key(const upb_FieldDef* field);
const upb_FieldDef* map_field_value(const upb_FieldDef* field);
// -----------------------------------------------------------------------------
// Arena
// -----------------------------------------------------------------------------
// A Ruby object that wraps an underlying upb_Arena. Any objects that are
// allocated from this arena should reference the Arena in rb_gc_mark(), to
// ensure that the object's underlying memory outlives any Ruby object that can
// reach it.
VALUE Arena_new();
upb_Arena* Arena_get(VALUE arena);
// Fuses this arena to another, throwing a Ruby exception if this is not
// possible.
void Arena_fuse(VALUE arena, upb_Arena* other);
// -----------------------------------------------------------------------------
// ObjectCache
// -----------------------------------------------------------------------------
// Global object cache from upb array/map/message/symtab to wrapper object.
//
// This is a conceptually "weak" cache, in that it does not prevent "val" from
// being collected (though in Ruby <2.7 is it effectively strong, due to
// implementation limitations).
// Tries to add a new entry to the cache, returning the newly installed value or
// the pre-existing entry.
VALUE ObjectCache_TryAdd(const void* key, VALUE val);
// Returns the cached object for this key, if any. Otherwise returns Qnil.
VALUE ObjectCache_Get(const void* key);
// -----------------------------------------------------------------------------
// StringBuilder, for inspect
// -----------------------------------------------------------------------------
struct StringBuilder;
typedef struct StringBuilder StringBuilder;
StringBuilder* StringBuilder_New();
void StringBuilder_Free(StringBuilder* b);
void StringBuilder_Printf(StringBuilder* b, const char* fmt, ...);
VALUE StringBuilder_ToRubyString(StringBuilder* b);
void StringBuilder_PrintMsgval(StringBuilder* b, upb_MessageValue val,
TypeInfo info);
// -----------------------------------------------------------------------------
// Utilities.
// -----------------------------------------------------------------------------
extern VALUE cTypeError;
#ifdef NDEBUG
#define PBRUBY_ASSERT(expr) \
do { \
} while (false && (expr))
#else
#define PBRUBY_ASSERT(expr) \
if (!(expr)) \
rb_bug("Assertion failed at %s:%d, expr: %s", __FILE__, __LINE__, #expr)
#endif
// Raises a Ruby error if val is frozen in Ruby or upb_frozen is true.
void Protobuf_CheckNotFrozen(VALUE val, bool upb_frozen);
#define PBRUBY_MAX(x, y) (((x) > (y)) ? (x) : (y))
#define UPB_UNUSED(var) (void)var
#endif // __GOOGLE_PROTOBUF_RUBY_PROTOBUF_H__
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