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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
//===- ListWarnings.h - diagtool tool for printing warning flags ----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides a diagtool tool that displays warning flags for
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// diagnostics.
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//
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//===----------------------------------------------------------------------===//
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#include "DiagTool.h"
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#include "DiagnosticNames.h"
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#include "clang/Basic/AllDiagnostics.h"
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#include "clang/Basic/Diagnostic.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/Support/Format.h"
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DEF_DIAGTOOL("list-warnings",
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"List warnings and their corresponding flags",
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ListWarnings)
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using namespace clang;
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using namespace diagtool;
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namespace {
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struct Entry {
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llvm::StringRef DiagName;
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llvm::StringRef Flag;
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Entry(llvm::StringRef diagN, llvm::StringRef flag)
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: DiagName(diagN), Flag(flag) {}
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bool operator<(const Entry &x) const { return DiagName < x.DiagName; }
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};
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}
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static void printEntries(std::vector<Entry> &entries, llvm::raw_ostream &out) {
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for (const Entry &E : entries) {
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out << " " << E.DiagName;
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if (!E.Flag.empty())
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out << " [-W" << E.Flag << "]";
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out << '\n';
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}
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}
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int ListWarnings::run(unsigned int argc, char **argv, llvm::raw_ostream &out) {
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std::vector<Entry> Flagged, Unflagged;
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llvm::StringMap<std::vector<unsigned> > flagHistogram;
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for (const DiagnosticRecord &DR : getBuiltinDiagnosticsByName()) {
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const unsigned diagID = DR.DiagID;
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if (DiagnosticIDs::isBuiltinNote(diagID))
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continue;
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if (!DiagnosticIDs::isBuiltinWarningOrExtension(diagID))
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continue;
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Entry entry(DR.getName(), DiagnosticIDs::getWarningOptionForDiag(diagID));
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if (entry.Flag.empty())
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Unflagged.push_back(entry);
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else {
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Flagged.push_back(entry);
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flagHistogram[entry.Flag].push_back(diagID);
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}
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}
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out << "Warnings with flags (" << Flagged.size() << "):\n";
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printEntries(Flagged, out);
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out << "Warnings without flags (" << Unflagged.size() << "):\n";
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printEntries(Unflagged, out);
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out << "\nSTATISTICS:\n\n";
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double percentFlagged =
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((double)Flagged.size()) / (Flagged.size() + Unflagged.size()) * 100.0;
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out << " Percentage of warnings with flags: "
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<< llvm::format("%.4g", percentFlagged) << "%\n";
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out << " Number of unique flags: "
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<< flagHistogram.size() << '\n';
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double avgDiagsPerFlag = (double) Flagged.size() / flagHistogram.size();
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out << " Average number of diagnostics per flag: "
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<< llvm::format("%.4g", avgDiagsPerFlag) << '\n';
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out << " Number in -Wpedantic (not covered by other -W flags): "
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<< flagHistogram["pedantic"].size() << '\n';
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out << '\n';
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return 0;
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}
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