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 17using namespace clang; 18 19std::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 28raw_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::WatchOS: out << "watchos"; break; 34 case ObjCRuntime::GNUstep: out << "gnustep"; break; 35 case ObjCRuntime::GCC: out << "gcc"; break; 36 case ObjCRuntime::ObjFW: out << "objfw"; break; 37 } 38 if (value.getVersion() > VersionTuple(0)) { 39 out << '-' << value.getVersion(); 40 } 41 return out; 42} 43 44bool ObjCRuntime::tryParse(StringRef input) { 45 // Look for the last dash. 46 std::size_t dash = input.rfind('-'); 47 48 // We permit dashes in the runtime name, and we also permit the 49 // version to be omitted, so if we see a dash not followed by a 50 // digit then we need to ignore it. 51 if (dash != StringRef::npos && dash + 1 != input.size() && 52 (input[dash+1] < '0' || input[dash+1] > '9')) { 53 dash = StringRef::npos; 54 } 55 56 // Everything prior to that must be a valid string name. 57 Kind kind; 58 StringRef runtimeName = input.substr(0, dash); 59 Version = VersionTuple(0); 60 if (runtimeName == "macosx") { 61 kind = ObjCRuntime::MacOSX; 62 } else if (runtimeName == "macosx-fragile") { 63 kind = ObjCRuntime::FragileMacOSX; 64 } else if (runtimeName == "ios") { 65 kind = ObjCRuntime::iOS; 66 } else if (runtimeName == "watchos") { 67 kind = ObjCRuntime::WatchOS; 68 } else if (runtimeName == "gnustep") { 69 // If no version is specified then default to the most recent one that we 70 // know about. 71 Version = VersionTuple(1, 6); 72 kind = ObjCRuntime::GNUstep; 73 } else if (runtimeName == "gcc") { 74 kind = ObjCRuntime::GCC; 75 } else if (runtimeName == "objfw") { 76 kind = ObjCRuntime::ObjFW; 77 Version = VersionTuple(0, 8); 78 } else { 79 return true; 80 } 81 TheKind = kind; 82 83 if (dash != StringRef::npos) { 84 StringRef verString = input.substr(dash + 1); 85 if (Version.tryParse(verString)) 86 return true; 87 } 88 89 if (kind == ObjCRuntime::ObjFW && Version > VersionTuple(0, 8)) 90 Version = VersionTuple(0, 8); 91 92 return false; 93} 94