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
getAsString() const19 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
operator <<(raw_ostream & out,const ObjCRuntime & value)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
tryParse(StringRef input)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 Version = VersionTuple(0, 8);
75 } else {
76 return true;
77 }
78 TheKind = kind;
79
80 if (dash != StringRef::npos) {
81 StringRef verString = input.substr(dash + 1);
82 if (Version.tryParse(verString))
83 return true;
84 }
85
86 if (kind == ObjCRuntime::ObjFW && Version > VersionTuple(0, 8))
87 Version = VersionTuple(0, 8);
88
89 return false;
90 }
91