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The reader and writer will need to share this information, but there's no reason anyone else will need it. Swift SVN r5133
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
//===--- ModuleFormat.h - The internals of serialized modules ---*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file Contains various constants and helper types to deal with serialized
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/// modules.
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///
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_SERIALIZATION_MODULEFORMAT_H
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#define SWIFT_SERIALIZATION_MODULEFORMAT_H
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#include "swift/Serialization/BCRecordLayout.h"
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#include "llvm/Bitcode/BitCodes.h"
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namespace swift {
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namespace serialization {
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/// Magic number for serialized module files.
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const char Signature[] = "SMod";
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/// Serialized module format major version number.
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///
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/// When the format changes in such a way that older compilers will not be
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/// able to read the file at all, this number should be incremented.
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const unsigned VERSION_MAJOR = 1;
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/// Serialized module format minor version number.
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///
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/// When the format changes in a backwards-compatible way, this number should
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/// be incremented.
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const unsigned VERSION_MINOR = 0;
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/// The various types of blocks that can occur within a serialized Swift
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/// module.
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enum BlockID {
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/// The control block, which contains all of the information that needs to
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/// be validated prior to committing to loading the serialized module.
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///
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/// \sa control_block
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CONTROL_BLOCK_ID = llvm::bitc::FIRST_APPLICATION_BLOCKID,
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/// The input block, which contains all the files this module depends on.
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///
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/// \sa input_block
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INPUT_BLOCK_ID
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};
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/// The record types within the control block.
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///
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/// \sa CONTROL_BLOCK_ID
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namespace control_block {
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enum {
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METADATA = 1
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};
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using MetadataLayout = BCRecordLayout<
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METADATA, // ID
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BCFixed<16>, // Module format major version
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BCFixed<16>, // Module format minor version
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BCBlob // misc. version information
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>;
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}
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/// The record types within the input block.
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///
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/// \sa INPUT_BLOCK_ID
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namespace input_block {
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enum {
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SOURCE_FILE = 1
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};
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using SourceFileLayout = BCRecordLayout<
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SOURCE_FILE, // ID
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BCBlob // path
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>;
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}
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} // end namespace serialization
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} // end namespace swift
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#endif
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