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