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b73ca15aea
Don't ask the output string for its size since the stream may not have flushed. Swift SVN r32554
147 lines
4.3 KiB
C++
147 lines
4.3 KiB
C++
//===--- Version.cpp - Swift Version Number -------------------------------===//
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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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// This file defines several version-related utility functions for Swift.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/CharInfo.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/ADT/SmallString.h"
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#include "swift/AST/DiagnosticsParse.h"
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#include "swift/Basic/LLVM.h"
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#include "swift/Basic/Version.h"
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#include <vector>
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#define TOSTR2(X) #X
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#define TOSTR(X) TOSTR2(X)
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#ifdef SWIFT_VERSION_PATCHLEVEL
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/// Helper macro for SWIFT_VERSION_STRING.
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#define SWIFT_MAKE_VERSION_STRING(X, Y, Z) TOSTR(X) "." TOSTR(Y) "." TOSTR(Z)
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/// A string that describes the Swift version number, e.g., "1.0".
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#define SWIFT_VERSION_STRING \
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SWIFT_MAKE_VERSION_STRING(SWIFT_VERSION_MAJOR, SWIFT_VERSION_MINOR, \
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SWIFT_VERSION_PATCHLEVEL)
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#else
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/// Helper macro for SWIFT_VERSION_STRING.
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#define SWIFT_MAKE_VERSION_STRING(X, Y) TOSTR(X) "." TOSTR(Y)
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/// A string that describes the Swift version number, e.g., "1.0".
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#define SWIFT_VERSION_STRING \
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SWIFT_MAKE_VERSION_STRING(SWIFT_VERSION_MAJOR, SWIFT_VERSION_MINOR)
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#endif
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namespace swift {
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namespace version {
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void parseVersionString(StringRef VersionString,
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SmallVectorImpl<unsigned> &Components,
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SourceLoc Loc,
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DiagnosticEngine *Diags) {
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SmallString<16> digits;
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llvm::raw_svector_ostream OS(digits);
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unsigned Component;
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for (auto c : VersionString) {
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if (Loc.isValid())
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Loc = Loc.getAdvancedLoc(1);
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if (clang::isDigit(c)) {
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OS << c;
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} else if (c == '.' && OS.str().size()) {
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OS.str().getAsInteger(10, Component);
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Components.push_back(Component);
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digits.clear();
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} else {
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Components.clear();
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if (Diags)
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Diags->diagnose(Loc, diag::invalid_character_in_compiler_version);
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else
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llvm_unreachable("Invalid character in _compiler_version build configuration");
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}
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}
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if (OS.str().size()) {
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OS.str().getAsInteger(10, Component);
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Components.push_back(Component);
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}
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}
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CompilerVersion::CompilerVersion(const StringRef VersionString,
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SourceLoc Loc, DiagnosticEngine *Diags) {
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parseVersionString(VersionString, Components, Loc, Diags);
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}
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#ifdef SWIFT_COMPILER_VERSION
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CompilerVersion::CompilerVersion() {
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parseVersionString(TOSTR(SWIFT_COMPILER_VERSION), Components, SourceLoc(),
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nullptr);
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}
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#endif
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std::string CompilerVersion::str() const {
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std::string VersionString;
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llvm::raw_string_ostream OS(VersionString);
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for (auto i = Components.begin(); i != Components.end(); i++) {
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OS << *i;
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if (i != Components.end() - 1)
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OS << '.';
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}
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return OS.str();
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}
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bool operator>=(const class CompilerVersion &lhs,
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const class CompilerVersion &rhs) {
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// The empty compiler version represents the latest possible version,
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// usually built from the source repository.
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if (lhs.empty())
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return true;
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auto n = std::min(lhs.size(), rhs.size());
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for (size_t i = 0; i < n; ++i) {
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// Skip the second component for comparison - this is just an internal
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// compiler variant.
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if (i == 1)
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continue;
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if (lhs[i] < rhs[i])
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return false;
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else if (lhs[i] > rhs[i])
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return true;
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}
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return lhs.size() >= rhs.size();
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}
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std::pair<unsigned, unsigned> getSwiftNumericVersion() {
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return { SWIFT_VERSION_MAJOR, SWIFT_VERSION_MINOR };
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}
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std::string getSwiftFullVersion() {
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std::string buf;
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llvm::raw_string_ostream OS(buf);
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#ifdef SWIFT_VENDOR
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OS << SWIFT_VENDOR " ";
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#endif
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OS << "Swift version " SWIFT_VERSION_STRING;
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#ifdef SWIFT_COMPILER_VERSION
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OS << " (" TOSTR(SWIFT_COMPILER_VERSION) ")";
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#endif
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return OS.str();
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}
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} // end namespace version
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} // end namespace swift
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