1//===--- LangStandards.cpp - Language Standard Definitions ----------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "clang/Basic/LangStandard.h"
10#include "clang/Config/config.h"
11#include "llvm/ADT/StringSwitch.h"
12#include "llvm/Support/ErrorHandling.h"
13#include "llvm/TargetParser/Triple.h"
14using namespace clang;
15
16StringRef clang::languageToString(Language L) {
17 switch (L) {
18 case Language::Unknown:
19 return "Unknown";
20 case Language::Asm:
21 return "Asm";
22 case Language::LLVM_IR:
23 return "LLVM IR";
24 case Language::C:
25 return "C";
26 case Language::CXX:
27 return "C++";
28 case Language::ObjC:
29 return "Objective-C";
30 case Language::ObjCXX:
31 return "Objective-C++";
32 case Language::OpenCL:
33 return "OpenCL";
34 case Language::OpenCLCXX:
35 return "OpenCLC++";
36 case Language::CUDA:
37 return "CUDA";
38 case Language::RenderScript:
39 return "RenderScript";
40 case Language::HIP:
41 return "HIP";
42 case Language::HLSL:
43 return "HLSL";
44 }
45
46 llvm_unreachable("unhandled language kind");
47}
48
49#define LANGSTANDARD(id, name, lang, desc, features) \
50 static const LangStandard Lang_##id = {name, desc, features, Language::lang};
51#include "clang/Basic/LangStandards.def"
52
53const LangStandard &LangStandard::getLangStandardForKind(Kind K) {
54 switch (K) {
55 case lang_unspecified:
56 llvm::report_fatal_error(reason: "getLangStandardForKind() on unspecified kind");
57#define LANGSTANDARD(id, name, lang, desc, features) \
58 case lang_##id: return Lang_##id;
59#include "clang/Basic/LangStandards.def"
60 }
61 llvm_unreachable("Invalid language kind!");
62}
63
64LangStandard::Kind LangStandard::getLangKind(StringRef Name) {
65 return llvm::StringSwitch<Kind>(Name)
66#define LANGSTANDARD(id, name, lang, desc, features) .Case(name, lang_##id)
67#define LANGSTANDARD_ALIAS(id, alias) .Case(alias, lang_##id)
68#include "clang/Basic/LangStandards.def"
69 .Default(Value: lang_unspecified);
70}
71
72const LangStandard *LangStandard::getLangStandardForName(StringRef Name) {
73 Kind K = getLangKind(Name);
74 if (K == lang_unspecified)
75 return nullptr;
76
77 return &getLangStandardForKind(K);
78}
79
80LangStandard::Kind clang::getDefaultLanguageStandard(clang::Language Lang,
81 const llvm::Triple &T) {
82 switch (Lang) {
83 case Language::Unknown:
84 case Language::LLVM_IR:
85 llvm_unreachable("Invalid input kind!");
86 case Language::OpenCL:
87 return LangStandard::lang_opencl12;
88 case Language::OpenCLCXX:
89 return LangStandard::lang_openclcpp10;
90 case Language::Asm:
91 case Language::C:
92 // The PS4 uses C99 as the default C standard.
93 if (T.isPS4())
94 return LangStandard::lang_gnu99;
95 return LangStandard::lang_gnu17;
96 case Language::ObjC:
97 return LangStandard::lang_gnu11;
98 case Language::CXX:
99 case Language::ObjCXX:
100 case Language::CUDA:
101 case Language::HIP:
102 return LangStandard::lang_gnucxx17;
103 case Language::RenderScript:
104 return LangStandard::lang_c99;
105 case Language::HLSL:
106 return LangStandard::lang_hlsl2021;
107 }
108 llvm_unreachable("unhandled Language kind!");
109}
110

source code of clang/lib/Basic/LangStandards.cpp