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18b79ffcfd
Basic should not be allowed to link Parse, yet it was doing so to allow Version to provide a constructor that would conveniently parse a StringRef. This entrypoint also emitted diagnostics, so it pulled in libAST. Sink the version parser entrypoint down into Parse where it belongs and point all the clients to the right place.
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
//===--- ParseVersion.h - Parser Swift Version Numbers ----------*- 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 - 2017 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 https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_PARSE_PARSEVERSION_H
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#define SWIFT_PARSE_PARSEVERSION_H
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#include "swift/Basic/Version.h"
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namespace swift {
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class DiagnosticEngine;
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namespace version {
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/// Returns a version from the currently defined SWIFT_COMPILER_VERSION.
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///
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/// If SWIFT_COMPILER_VERSION is undefined, this will return the empty
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/// compiler version.
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Version getCurrentCompilerVersion();
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} // namespace version
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class VersionParser final {
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public:
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/// Parse a version in the form used by the _compiler_version(string-literal)
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/// \#if condition.
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///
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/// \note This is \em only used for the string literal version, so it includes
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/// backwards-compatibility logic to convert it to something that can be
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/// compared with a modern SWIFT_COMPILER_VERSION.
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static Optional<version::Version>
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parseCompilerVersionString(StringRef VersionString, SourceLoc Loc,
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DiagnosticEngine *Diags);
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/// Parse a generic version string of the format [0-9]+(.[0-9]+)*
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///
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/// Version components can be any unsigned 64-bit number.
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static Optional<version::Version> parseVersionString(StringRef VersionString,
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SourceLoc Loc,
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DiagnosticEngine *Diags);
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};
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} // namespace swift
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#endif // SWIFT_PARSE_PARSEVERSION_H
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