| 1 | //===- FindDiagnosticID.cpp - diagtool tool for finding diagnostic id -----===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "DiagTool.h" |
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| 10 | #include "DiagnosticNames.h" |
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| 11 | #include "clang/Basic/AllDiagnostics.h" |
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| 12 | #include "llvm/Support/CommandLine.h" |
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| 13 | #include <optional> |
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| 14 | |
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| 15 | DEF_DIAGTOOL("find-diagnostic-id" , "Print the id of the given diagnostic" , |
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| 16 | FindDiagnosticID) |
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| 17 | |
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| 18 | using namespace clang; |
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| 19 | using namespace diagtool; |
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| 20 | |
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| 21 | static StringRef getNameFromID(StringRef Name) { |
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| 22 | int DiagID; |
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| 23 | if(!Name.getAsInteger(Radix: 0, Result&: DiagID)) { |
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| 24 | const DiagnosticRecord &Diag = getDiagnosticForID(DiagID); |
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| 25 | return Diag.getName(); |
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| 26 | } |
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| 27 | return StringRef(); |
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| 28 | } |
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| 29 | |
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| 30 | static std::optional<DiagnosticRecord> |
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| 31 | findDiagnostic(ArrayRef<DiagnosticRecord> Diagnostics, StringRef Name) { |
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| 32 | for (const auto &Diag : Diagnostics) { |
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| 33 | StringRef DiagName = Diag.getName(); |
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| 34 | if (DiagName == Name) |
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| 35 | return Diag; |
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| 36 | } |
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| 37 | return std::nullopt; |
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| 38 | } |
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| 39 | |
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| 40 | int FindDiagnosticID::run(unsigned int argc, char **argv, |
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| 41 | llvm::raw_ostream &OS) { |
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| 42 | static llvm::cl::OptionCategory FindDiagnosticIDOptions( |
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| 43 | "diagtool find-diagnostic-id options" ); |
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| 44 | |
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| 45 | static llvm::cl::opt<std::string> DiagnosticName( |
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| 46 | llvm::cl::Positional, llvm::cl::desc("<diagnostic-name>" ), |
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| 47 | llvm::cl::Required, llvm::cl::cat(FindDiagnosticIDOptions)); |
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| 48 | |
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| 49 | std::vector<const char *> Args; |
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| 50 | Args.push_back(x: "diagtool find-diagnostic-id" ); |
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| 51 | for (const char *A : llvm::ArrayRef(argv, argc)) |
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| 52 | Args.push_back(x: A); |
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| 53 | |
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| 54 | llvm::cl::HideUnrelatedOptions(Category&: FindDiagnosticIDOptions); |
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| 55 | llvm::cl::ParseCommandLineOptions(argc: (int)Args.size(), argv: Args.data(), |
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| 56 | Overview: "Diagnostic ID mapping utility" ); |
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| 57 | |
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| 58 | ArrayRef<DiagnosticRecord> AllDiagnostics = getBuiltinDiagnosticsByName(); |
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| 59 | std::optional<DiagnosticRecord> Diag = |
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| 60 | findDiagnostic(Diagnostics: AllDiagnostics, Name: DiagnosticName); |
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| 61 | if (!Diag) { |
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| 62 | // Name to id failed, so try id to name. |
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| 63 | auto Name = getNameFromID(Name: DiagnosticName); |
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| 64 | if (!Name.empty()) { |
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| 65 | OS << Name << '\n'; |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |
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| 69 | llvm::errs() << "error: invalid diagnostic '" << DiagnosticName << "'\n" ; |
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| 70 | return 1; |
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| 71 | } |
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| 72 | OS << Diag->DiagID << "\n" ; |
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| 73 | return 0; |
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| 74 | } |
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| 75 | |
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