ObjCRuntime.cpp revision 239313
1239313Sdim//===- ObjCRuntime.cpp - Objective-C Runtime Handling -----------*- C++ -*-===// 2239313Sdim// 3239313Sdim// The LLVM Compiler Infrastructure 4239313Sdim// 5239313Sdim// This file is distributed under the University of Illinois Open Source 6239313Sdim// License. See LICENSE.TXT for details. 7239313Sdim// 8239313Sdim//===----------------------------------------------------------------------===// 9239313Sdim// 10239313Sdim// This file implements the ObjCRuntime class, which represents the 11239313Sdim// target Objective-C runtime. 12239313Sdim// 13239313Sdim//===----------------------------------------------------------------------===// 14239313Sdim#include "clang/Basic/ObjCRuntime.h" 15239313Sdim#include "llvm/Support/raw_ostream.h" 16239313Sdim 17239313Sdimusing namespace clang; 18239313Sdim 19239313Sdimstd::string ObjCRuntime::getAsString() const { 20239313Sdim std::string Result; 21239313Sdim { 22239313Sdim llvm::raw_string_ostream Out(Result); 23239313Sdim Out << *this; 24239313Sdim } 25239313Sdim return Result; 26239313Sdim} 27239313Sdim 28239313Sdimraw_ostream &clang::operator<<(raw_ostream &out, const ObjCRuntime &value) { 29239313Sdim switch (value.getKind()) { 30239313Sdim case ObjCRuntime::MacOSX: out << "macosx"; break; 31239313Sdim case ObjCRuntime::FragileMacOSX: out << "macosx-fragile"; break; 32239313Sdim case ObjCRuntime::iOS: out << "ios"; break; 33239313Sdim case ObjCRuntime::GNUstep: out << "gnustep"; break; 34239313Sdim case ObjCRuntime::GCC: out << "gcc"; break; 35239313Sdim case ObjCRuntime::ObjFW: out << "objfw"; break; 36239313Sdim } 37239313Sdim if (value.getVersion() > VersionTuple(0)) { 38239313Sdim out << '-' << value.getVersion(); 39239313Sdim } 40239313Sdim return out; 41239313Sdim} 42239313Sdim 43239313Sdimbool ObjCRuntime::tryParse(StringRef input) { 44239313Sdim // Look for the last dash. 45239313Sdim std::size_t dash = input.rfind('-'); 46239313Sdim 47239313Sdim // We permit dashes in the runtime name, and we also permit the 48239313Sdim // version to be omitted, so if we see a dash not followed by a 49239313Sdim // digit then we need to ignore it. 50239313Sdim if (dash != StringRef::npos && dash + 1 != input.size() && 51239313Sdim (input[dash+1] < '0' || input[dash+1] > '9')) { 52239313Sdim dash = StringRef::npos; 53239313Sdim } 54239313Sdim 55239313Sdim // Everything prior to that must be a valid string name. 56239313Sdim Kind kind; 57239313Sdim StringRef runtimeName = input.substr(0, dash); 58239313Sdim Version = VersionTuple(0); 59239313Sdim if (runtimeName == "macosx") { 60239313Sdim kind = ObjCRuntime::MacOSX; 61239313Sdim } else if (runtimeName == "macosx-fragile") { 62239313Sdim kind = ObjCRuntime::FragileMacOSX; 63239313Sdim } else if (runtimeName == "ios") { 64239313Sdim kind = ObjCRuntime::iOS; 65239313Sdim } else if (runtimeName == "gnustep") { 66239313Sdim // If no version is specified then default to the most recent one that we 67239313Sdim // know about. 68239313Sdim Version = VersionTuple(1, 6); 69239313Sdim kind = ObjCRuntime::GNUstep; 70239313Sdim } else if (runtimeName == "gcc") { 71239313Sdim kind = ObjCRuntime::GCC; 72239313Sdim } else if (runtimeName == "objfw") { 73239313Sdim kind = ObjCRuntime::ObjFW; 74239313Sdim } else { 75239313Sdim return true; 76239313Sdim } 77239313Sdim TheKind = kind; 78239313Sdim 79239313Sdim if (dash != StringRef::npos) { 80239313Sdim StringRef verString = input.substr(dash + 1); 81239313Sdim if (Version.tryParse(verString)) 82239313Sdim return true; 83239313Sdim } 84239313Sdim 85239313Sdim return false; 86239313Sdim} 87