1 //===- ObjCRuntime.cpp - Objective-C Runtime Handling -----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the ObjCRuntime class, which represents the 11 // target Objective-C runtime. 12 // 13 //===----------------------------------------------------------------------===// 14 #include "clang/Basic/ObjCRuntime.h" 15 #include "llvm/Support/raw_ostream.h" 16 17 using namespace clang; 18 19 std::string ObjCRuntime::getAsString() const { 20 std::string Result; 21 { 22 llvm::raw_string_ostream Out(Result); 23 Out << *this; 24 } 25 return Result; 26 } 27 28 raw_ostream &clang::operator<<(raw_ostream &out, const ObjCRuntime &value) { 29 switch (value.getKind()) { 30 case ObjCRuntime::MacOSX: out << "macosx"; break; 31 case ObjCRuntime::FragileMacOSX: out << "macosx-fragile"; break; 32 case ObjCRuntime::iOS: out << "ios"; break; 33 case ObjCRuntime::GNUstep: out << "gnustep"; break; 34 case ObjCRuntime::GCC: out << "gcc"; break; 35 case ObjCRuntime::ObjFW: out << "objfw"; break; 36 } 37 if (value.getVersion() > VersionTuple(0)) { 38 out << '-' << value.getVersion(); 39 } 40 return out; 41 } 42 43 bool ObjCRuntime::tryParse(StringRef input) { 44 // Look for the last dash. 45 std::size_t dash = input.rfind('-'); 46 47 // We permit dashes in the runtime name, and we also permit the 48 // version to be omitted, so if we see a dash not followed by a 49 // digit then we need to ignore it. 50 if (dash != StringRef::npos && dash + 1 != input.size() && 51 (input[dash+1] < '0' || input[dash+1] > '9')) { 52 dash = StringRef::npos; 53 } 54 55 // Everything prior to that must be a valid string name. 56 Kind kind; 57 StringRef runtimeName = input.substr(0, dash); 58 Version = VersionTuple(0); 59 if (runtimeName == "macosx") { 60 kind = ObjCRuntime::MacOSX; 61 } else if (runtimeName == "macosx-fragile") { 62 kind = ObjCRuntime::FragileMacOSX; 63 } else if (runtimeName == "ios") { 64 kind = ObjCRuntime::iOS; 65 } else if (runtimeName == "gnustep") { 66 // If no version is specified then default to the most recent one that we 67 // know about. 68 Version = VersionTuple(1, 6); 69 kind = ObjCRuntime::GNUstep; 70 } else if (runtimeName == "gcc") { 71 kind = ObjCRuntime::GCC; 72 } else if (runtimeName == "objfw") { 73 kind = ObjCRuntime::ObjFW; 74 } else { 75 return true; 76 } 77 TheKind = kind; 78 79 if (dash != StringRef::npos) { 80 StringRef verString = input.substr(dash + 1); 81 if (Version.tryParse(verString)) 82 return true; 83 } 84 85 return false; 86 } 87
