10b57cec5SDimitry Andric //===- ObjCRuntime.cpp - Objective-C Runtime Handling ---------------------===//
20b57cec5SDimitry Andric //
30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
60b57cec5SDimitry Andric //
70b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
80b57cec5SDimitry Andric //
90b57cec5SDimitry Andric // This file implements the ObjCRuntime class, which represents the
100b57cec5SDimitry Andric // target Objective-C runtime.
110b57cec5SDimitry Andric //
120b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
130b57cec5SDimitry Andric
140b57cec5SDimitry Andric #include "clang/Basic/ObjCRuntime.h"
150b57cec5SDimitry Andric #include "llvm/ADT/StringRef.h"
160b57cec5SDimitry Andric #include "llvm/Support/VersionTuple.h"
170b57cec5SDimitry Andric #include "llvm/Support/raw_ostream.h"
180b57cec5SDimitry Andric #include <cstddef>
190b57cec5SDimitry Andric #include <string>
200b57cec5SDimitry Andric
210b57cec5SDimitry Andric using namespace clang;
220b57cec5SDimitry Andric
getAsString() const230b57cec5SDimitry Andric std::string ObjCRuntime::getAsString() const {
240b57cec5SDimitry Andric std::string Result;
250b57cec5SDimitry Andric {
260b57cec5SDimitry Andric llvm::raw_string_ostream Out(Result);
270b57cec5SDimitry Andric Out << *this;
280b57cec5SDimitry Andric }
290b57cec5SDimitry Andric return Result;
300b57cec5SDimitry Andric }
310b57cec5SDimitry Andric
operator <<(raw_ostream & out,const ObjCRuntime & value)320b57cec5SDimitry Andric raw_ostream &clang::operator<<(raw_ostream &out, const ObjCRuntime &value) {
330b57cec5SDimitry Andric switch (value.getKind()) {
340b57cec5SDimitry Andric case ObjCRuntime::MacOSX: out << "macosx"; break;
350b57cec5SDimitry Andric case ObjCRuntime::FragileMacOSX: out << "macosx-fragile"; break;
360b57cec5SDimitry Andric case ObjCRuntime::iOS: out << "ios"; break;
370b57cec5SDimitry Andric case ObjCRuntime::WatchOS: out << "watchos"; break;
380b57cec5SDimitry Andric case ObjCRuntime::GNUstep: out << "gnustep"; break;
390b57cec5SDimitry Andric case ObjCRuntime::GCC: out << "gcc"; break;
400b57cec5SDimitry Andric case ObjCRuntime::ObjFW: out << "objfw"; break;
410b57cec5SDimitry Andric }
420b57cec5SDimitry Andric if (value.getVersion() > VersionTuple(0)) {
430b57cec5SDimitry Andric out << '-' << value.getVersion();
440b57cec5SDimitry Andric }
450b57cec5SDimitry Andric return out;
460b57cec5SDimitry Andric }
470b57cec5SDimitry Andric
tryParse(StringRef input)480b57cec5SDimitry Andric bool ObjCRuntime::tryParse(StringRef input) {
490b57cec5SDimitry Andric // Look for the last dash.
500b57cec5SDimitry Andric std::size_t dash = input.rfind('-');
510b57cec5SDimitry Andric
520b57cec5SDimitry Andric // We permit dashes in the runtime name, and we also permit the
530b57cec5SDimitry Andric // version to be omitted, so if we see a dash not followed by a
540b57cec5SDimitry Andric // digit then we need to ignore it.
550b57cec5SDimitry Andric if (dash != StringRef::npos && dash + 1 != input.size() &&
560b57cec5SDimitry Andric (input[dash+1] < '0' || input[dash+1] > '9')) {
570b57cec5SDimitry Andric dash = StringRef::npos;
580b57cec5SDimitry Andric }
590b57cec5SDimitry Andric
600b57cec5SDimitry Andric // Everything prior to that must be a valid string name.
610b57cec5SDimitry Andric Kind kind;
620b57cec5SDimitry Andric StringRef runtimeName = input.substr(0, dash);
630b57cec5SDimitry Andric Version = VersionTuple(0);
640b57cec5SDimitry Andric if (runtimeName == "macosx") {
650b57cec5SDimitry Andric kind = ObjCRuntime::MacOSX;
660b57cec5SDimitry Andric } else if (runtimeName == "macosx-fragile") {
670b57cec5SDimitry Andric kind = ObjCRuntime::FragileMacOSX;
680b57cec5SDimitry Andric } else if (runtimeName == "ios") {
690b57cec5SDimitry Andric kind = ObjCRuntime::iOS;
700b57cec5SDimitry Andric } else if (runtimeName == "watchos") {
710b57cec5SDimitry Andric kind = ObjCRuntime::WatchOS;
720b57cec5SDimitry Andric } else if (runtimeName == "gnustep") {
730b57cec5SDimitry Andric // If no version is specified then default to the most recent one that we
740b57cec5SDimitry Andric // know about.
750b57cec5SDimitry Andric Version = VersionTuple(1, 6);
760b57cec5SDimitry Andric kind = ObjCRuntime::GNUstep;
770b57cec5SDimitry Andric } else if (runtimeName == "gcc") {
780b57cec5SDimitry Andric kind = ObjCRuntime::GCC;
790b57cec5SDimitry Andric } else if (runtimeName == "objfw") {
800b57cec5SDimitry Andric kind = ObjCRuntime::ObjFW;
810b57cec5SDimitry Andric Version = VersionTuple(0, 8);
820b57cec5SDimitry Andric } else {
830b57cec5SDimitry Andric return true;
840b57cec5SDimitry Andric }
850b57cec5SDimitry Andric TheKind = kind;
860b57cec5SDimitry Andric
870b57cec5SDimitry Andric if (dash != StringRef::npos) {
880b57cec5SDimitry Andric StringRef verString = input.substr(dash + 1);
890b57cec5SDimitry Andric if (Version.tryParse(verString))
900b57cec5SDimitry Andric return true;
910b57cec5SDimitry Andric }
920b57cec5SDimitry Andric
930b57cec5SDimitry Andric if (kind == ObjCRuntime::ObjFW && Version > VersionTuple(0, 8))
940b57cec5SDimitry Andric Version = VersionTuple(0, 8);
950b57cec5SDimitry Andric
960b57cec5SDimitry Andric return false;
970b57cec5SDimitry Andric }
98