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::CIR:
25 return "ClangIR";
26 case Language::C:
27 return "C";
28 case Language::CXX:
29 return "C++";
30 case Language::ObjC:
31 return "Objective-C";
32 case Language::ObjCXX:
33 return "Objective-C++";
34 case Language::OpenCL:
35 return "OpenCL";
36 case Language::OpenCLCXX:
37 return "OpenCLC++";
38 case Language::CUDA:
39 return "CUDA";
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
72LangStandard::Kind LangStandard::getHLSLLangKind(StringRef Name) {
73 return llvm::StringSwitch<LangStandard::Kind>(Name)
74 .Case(S: "2016", Value: LangStandard::lang_hlsl2016)
75 .Case(S: "2017", Value: LangStandard::lang_hlsl2017)
76 .Case(S: "2018", Value: LangStandard::lang_hlsl2018)
77 .Case(S: "2021", Value: LangStandard::lang_hlsl2021)
78 .Case(S: "202x", Value: LangStandard::lang_hlsl202x)
79 .Case(S: "202y", Value: LangStandard::lang_hlsl202y)
80 .Default(Value: LangStandard::lang_unspecified);
81}
82
83const LangStandard *LangStandard::getLangStandardForName(StringRef Name) {
84 Kind K = getLangKind(Name);
85 if (K == lang_unspecified)
86 return nullptr;
87
88 return &getLangStandardForKind(K);
89}
90
91LangStandard::Kind clang::getDefaultLanguageStandard(clang::Language Lang,
92 const llvm::Triple &T) {
93 switch (Lang) {
94 case Language::Unknown:
95 case Language::LLVM_IR:
96 case Language::CIR:
97 llvm_unreachable("Invalid input kind!");
98 case Language::OpenCL:
99 return LangStandard::lang_opencl12;
100 case Language::OpenCLCXX:
101 return LangStandard::lang_openclcpp10;
102 case Language::Asm:
103 case Language::C:
104 // The PS4 uses C99 as the default C standard.
105 if (T.isPS4())
106 return LangStandard::lang_gnu99;
107 return LangStandard::lang_gnu17;
108 case Language::ObjC:
109 return LangStandard::lang_gnu11;
110 case Language::CXX:
111 case Language::ObjCXX:
112 case Language::CUDA:
113 case Language::HIP:
114 return LangStandard::lang_gnucxx17;
115 case Language::HLSL:
116 return LangStandard::lang_hlsl202x;
117 }
118 llvm_unreachable("unhandled Language kind!");
119}
120