forked from OSchip/llvm-project
136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
//===- TreeView.cpp - diagtool tool for printing warning flags ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This diagnostic tool
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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/Diagnostic.h"
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#include "llvm/Support/Format.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/DenseSet.h"
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#include "clang/AST/ASTDiagnostic.h"
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#include "clang/Basic/AllDiagnostics.h"
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DEF_DIAGTOOL("tree",
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"Show warning flags in a tree view",
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TreeView)
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using namespace clang;
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using namespace diagtool;
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static void printUsage() {
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llvm::errs() << "Usage: diagtool tree [--flags-only] [<diagnostic-group>]\n";
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}
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static void printGroup(llvm::raw_ostream &out, const GroupRecord &Group,
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bool FlagsOnly, unsigned Indent = 0) {
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out.indent(Indent * 2);
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out << "-W" << Group.getName() << "\n";
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++Indent;
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for (GroupRecord::subgroup_iterator I = Group.subgroup_begin(),
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E = Group.subgroup_end();
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I != E; ++I) {
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printGroup(out, *I, FlagsOnly, Indent);
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}
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if (!FlagsOnly) {
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for (GroupRecord::diagnostics_iterator I = Group.diagnostics_begin(),
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E = Group.diagnostics_end();
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I != E; ++I) {
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out.indent(Indent * 2);
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out << I->getName() << "\n";
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}
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}
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}
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static int showGroup(llvm::raw_ostream &out, StringRef RootGroup,
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bool FlagsOnly) {
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ArrayRef<GroupRecord> AllGroups = getDiagnosticGroups();
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GroupRecord Key = { RootGroup.size(), RootGroup.data(), 0, 0 };
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const GroupRecord *Found =
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std::lower_bound(AllGroups.begin(), AllGroups.end(), Key);
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if (Found == AllGroups.end() || Found->getName() != RootGroup) {
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llvm::errs() << "No such diagnostic group exists\n";
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return 1;
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}
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printGroup(out, *Found, FlagsOnly);
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return 0;
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}
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static int showAll(llvm::raw_ostream &out, bool FlagsOnly) {
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ArrayRef<GroupRecord> AllGroups = getDiagnosticGroups();
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llvm::DenseSet<unsigned> NonRootGroupIDs;
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for (ArrayRef<GroupRecord>::iterator I = AllGroups.begin(),
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E = AllGroups.end();
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I != E; ++I) {
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for (GroupRecord::subgroup_iterator SI = I->subgroup_begin(),
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SE = I->subgroup_end();
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SI != SE; ++SI) {
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NonRootGroupIDs.insert((unsigned)SI.getID());
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}
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}
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assert(NonRootGroupIDs.size() < AllGroups.size());
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for (unsigned i = 0, e = AllGroups.size(); i != e; ++i) {
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if (!NonRootGroupIDs.count(i))
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printGroup(out, AllGroups[i], FlagsOnly);
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}
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return 0;
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}
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int TreeView::run(unsigned int argc, char **argv, llvm::raw_ostream &out) {
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// First check our one flag (--flags-only).
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bool FlagsOnly = false;
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if (argc > 0) {
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StringRef FirstArg(*argv);
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if (FirstArg.equals("--flags-only")) {
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FlagsOnly = true;
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--argc;
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++argv;
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}
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}
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bool ShowAll = false;
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StringRef RootGroup;
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switch (argc) {
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case 0:
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ShowAll = true;
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break;
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case 1:
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RootGroup = argv[0];
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if (RootGroup.startswith("-W"))
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RootGroup = RootGroup.substr(2);
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if (RootGroup == "everything")
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ShowAll = true;
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// FIXME: Handle other special warning flags, like -pedantic.
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break;
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default:
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printUsage();
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return -1;
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}
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if (ShowAll)
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return showAll(out, FlagsOnly);
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return showGroup(out, RootGroup, FlagsOnly);
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}
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