FindDiagnosticID.cpp source code [clang_source_code/tools/diagtool/FindDiagnosticID.cpp]

1	//===- FindDiagnosticID.cpp - diagtool tool for finding diagnostic id -----===//
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 "DiagTool.h"
10	#include "DiagnosticNames.h"
11	#include "clang/Basic/AllDiagnostics.h"
12	#include "llvm/Support/CommandLine.h"
13
14	RegisterFindDiagnosticID;}" file_link="DiagTool.h.html#58" macro="true">DEF_DIAGTOOL("find-diagnostic-id", "Print the id of the given diagnostic",
15	RegisterFindDiagnosticID;}" file_link="DiagTool.h.html#58" macro="true"> FindDiagnosticID)
16
17	using namespace clang;
18	using namespace diagtool;
19
20	static StringRef getNameFromID(StringRef Name) {
21	int DiagID;
22	if(!Name.getAsInteger(0, DiagID)) {
23	const DiagnosticRecord &Diag = getDiagnosticForID(DiagID);
24	return Diag.getName();
25	}
26	return StringRef();
27	}
28
29	static Optional<DiagnosticRecord>
30	findDiagnostic(ArrayRef<DiagnosticRecord> Diagnostics, StringRef Name) {
31	for (const auto &Diag : Diagnostics) {
32	StringRef DiagName = Diag.getName();
33	if (DiagName == Name)
34	return Diag;
35	}
36	return None;
37	}
38
39	int FindDiagnosticID::run(unsigned int argc, char **argv,
40	llvm::raw_ostream &OS) {
41	static llvm::cl::OptionCategory FindDiagnosticIDOptions(
42	"diagtool find-diagnostic-id options");
43
44	static llvm::cl::opt<std::string> DiagnosticName(
45	llvm::cl::Positional, llvm::cl::desc("<diagnostic-name>"),
46	llvm::cl::Required, llvm::cl::cat(FindDiagnosticIDOptions));
47
48	std::vector<const char *> Args;
49	Args.push_back("diagtool find-diagnostic-id");
50	for (const char *A : llvm::makeArrayRef(argv, argc))
51	Args.push_back(A);
52
53	llvm::cl::HideUnrelatedOptions(FindDiagnosticIDOptions);
54	llvm::cl::ParseCommandLineOptions((int)Args.size(), Args.data(),
55	"Diagnostic ID mapping utility");
56
57	ArrayRef<DiagnosticRecord> AllDiagnostics = getBuiltinDiagnosticsByName();
58	Optional<DiagnosticRecord> Diag =
59	findDiagnostic(AllDiagnostics, DiagnosticName);
60	if (!Diag) {
61	// Name to id failed, so try id to name.
62	auto Name = getNameFromID(DiagnosticName);
63	if (!Name.empty()) {
64	OS << Name << '\n';
65	return 0;
66	}
67
68	llvm::errs() << "error: invalid diagnostic '" << DiagnosticName << "'\n";
69	return 1;
70	}
71	OS << Diag->DiagID << "\n";
72	return 0;
73	}
74

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