forked from OSchip/llvm-project
1151 lines
41 KiB
C++
1151 lines
41 KiB
C++
//===- Diagnostic.cpp - C Language Family Diagnostic Handling -------------===//
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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 implements the Diagnostic-related interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/DiagnosticError.h"
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#include "clang/Basic/DiagnosticIDs.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/PartialDiagnostic.h"
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/Specifiers.h"
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#include "clang/Basic/TokenKinds.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/CrashRecoveryContext.h"
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#include "llvm/Support/Locale.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <cstring>
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#include <limits>
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#include <string>
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#include <utility>
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#include <vector>
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using namespace clang;
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const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
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DiagNullabilityKind nullability) {
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StringRef string;
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switch (nullability.first) {
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case NullabilityKind::NonNull:
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string = nullability.second ? "'nonnull'" : "'_Nonnull'";
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break;
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case NullabilityKind::Nullable:
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string = nullability.second ? "'nullable'" : "'_Nullable'";
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break;
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case NullabilityKind::Unspecified:
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string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'";
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break;
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}
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DB.AddString(string);
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return DB;
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}
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static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT,
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StringRef Modifier, StringRef Argument,
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ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs,
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SmallVectorImpl<char> &Output,
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void *Cookie,
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ArrayRef<intptr_t> QualTypeVals) {
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StringRef Str = "<can't format argument>";
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Output.append(Str.begin(), Str.end());
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}
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DiagnosticsEngine::DiagnosticsEngine(
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IntrusiveRefCntPtr<DiagnosticIDs> diags,
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IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, DiagnosticConsumer *client,
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bool ShouldOwnClient)
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: Diags(std::move(diags)), DiagOpts(std::move(DiagOpts)) {
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setClient(client, ShouldOwnClient);
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ArgToStringFn = DummyArgToStringFn;
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Reset();
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}
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DiagnosticsEngine::~DiagnosticsEngine() {
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// If we own the diagnostic client, destroy it first so that it can access the
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// engine from its destructor.
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setClient(nullptr);
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}
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void DiagnosticsEngine::dump() const {
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DiagStatesByLoc.dump(*SourceMgr);
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}
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void DiagnosticsEngine::dump(StringRef DiagName) const {
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DiagStatesByLoc.dump(*SourceMgr, DiagName);
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}
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void DiagnosticsEngine::setClient(DiagnosticConsumer *client,
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bool ShouldOwnClient) {
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Owner.reset(ShouldOwnClient ? client : nullptr);
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Client = client;
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}
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void DiagnosticsEngine::pushMappings(SourceLocation Loc) {
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DiagStateOnPushStack.push_back(GetCurDiagState());
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}
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bool DiagnosticsEngine::popMappings(SourceLocation Loc) {
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if (DiagStateOnPushStack.empty())
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return false;
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if (DiagStateOnPushStack.back() != GetCurDiagState()) {
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// State changed at some point between push/pop.
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PushDiagStatePoint(DiagStateOnPushStack.back(), Loc);
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}
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DiagStateOnPushStack.pop_back();
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return true;
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}
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void DiagnosticsEngine::Reset() {
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ErrorOccurred = false;
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UncompilableErrorOccurred = false;
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FatalErrorOccurred = false;
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UnrecoverableErrorOccurred = false;
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NumWarnings = 0;
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NumErrors = 0;
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TrapNumErrorsOccurred = 0;
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TrapNumUnrecoverableErrorsOccurred = 0;
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CurDiagID = std::numeric_limits<unsigned>::max();
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LastDiagLevel = DiagnosticIDs::Ignored;
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DelayedDiagID = 0;
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// Clear state related to #pragma diagnostic.
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DiagStates.clear();
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DiagStatesByLoc.clear();
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DiagStateOnPushStack.clear();
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// Create a DiagState and DiagStatePoint representing diagnostic changes
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// through command-line.
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DiagStates.emplace_back();
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DiagStatesByLoc.appendFirst(&DiagStates.back());
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}
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void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1,
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StringRef Arg2) {
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if (DelayedDiagID)
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return;
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DelayedDiagID = DiagID;
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DelayedDiagArg1 = Arg1.str();
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DelayedDiagArg2 = Arg2.str();
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}
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void DiagnosticsEngine::ReportDelayed() {
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unsigned ID = DelayedDiagID;
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DelayedDiagID = 0;
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Report(ID) << DelayedDiagArg1 << DelayedDiagArg2;
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}
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void DiagnosticsEngine::DiagStateMap::appendFirst(DiagState *State) {
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assert(Files.empty() && "not first");
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FirstDiagState = CurDiagState = State;
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CurDiagStateLoc = SourceLocation();
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}
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void DiagnosticsEngine::DiagStateMap::append(SourceManager &SrcMgr,
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SourceLocation Loc,
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DiagState *State) {
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CurDiagState = State;
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CurDiagStateLoc = Loc;
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std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
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unsigned Offset = Decomp.second;
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for (File *F = getFile(SrcMgr, Decomp.first); F;
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Offset = F->ParentOffset, F = F->Parent) {
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F->HasLocalTransitions = true;
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auto &Last = F->StateTransitions.back();
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assert(Last.Offset <= Offset && "state transitions added out of order");
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if (Last.Offset == Offset) {
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if (Last.State == State)
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break;
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Last.State = State;
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continue;
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}
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F->StateTransitions.push_back({State, Offset});
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}
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}
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DiagnosticsEngine::DiagState *
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DiagnosticsEngine::DiagStateMap::lookup(SourceManager &SrcMgr,
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SourceLocation Loc) const {
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// Common case: we have not seen any diagnostic pragmas.
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if (Files.empty())
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return FirstDiagState;
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std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc);
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const File *F = getFile(SrcMgr, Decomp.first);
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return F->lookup(Decomp.second);
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}
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DiagnosticsEngine::DiagState *
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DiagnosticsEngine::DiagStateMap::File::lookup(unsigned Offset) const {
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auto OnePastIt = std::upper_bound(
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StateTransitions.begin(), StateTransitions.end(), Offset,
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[](unsigned Offset, const DiagStatePoint &P) {
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return Offset < P.Offset;
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});
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assert(OnePastIt != StateTransitions.begin() && "missing initial state");
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return OnePastIt[-1].State;
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}
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DiagnosticsEngine::DiagStateMap::File *
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DiagnosticsEngine::DiagStateMap::getFile(SourceManager &SrcMgr,
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FileID ID) const {
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// Get or insert the File for this ID.
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auto Range = Files.equal_range(ID);
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if (Range.first != Range.second)
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return &Range.first->second;
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auto &F = Files.insert(Range.first, std::make_pair(ID, File()))->second;
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// We created a new File; look up the diagnostic state at the start of it and
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// initialize it.
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if (ID.isValid()) {
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std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedIncludedLoc(ID);
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F.Parent = getFile(SrcMgr, Decomp.first);
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F.ParentOffset = Decomp.second;
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F.StateTransitions.push_back({F.Parent->lookup(Decomp.second), 0});
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} else {
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// This is the (imaginary) root file into which we pretend all top-level
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// files are included; it descends from the initial state.
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//
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// FIXME: This doesn't guarantee that we use the same ordering as
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// isBeforeInTranslationUnit in the cases where someone invented another
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// top-level file and added diagnostic pragmas to it. See the code at the
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// end of isBeforeInTranslationUnit for the quirks it deals with.
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F.StateTransitions.push_back({FirstDiagState, 0});
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}
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return &F;
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}
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void DiagnosticsEngine::DiagStateMap::dump(SourceManager &SrcMgr,
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StringRef DiagName) const {
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llvm::errs() << "diagnostic state at ";
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CurDiagStateLoc.print(llvm::errs(), SrcMgr);
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llvm::errs() << ": " << CurDiagState << "\n";
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for (auto &F : Files) {
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FileID ID = F.first;
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File &File = F.second;
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bool PrintedOuterHeading = false;
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auto PrintOuterHeading = [&] {
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if (PrintedOuterHeading) return;
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PrintedOuterHeading = true;
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llvm::errs() << "File " << &File << " <FileID " << ID.getHashValue()
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<< ">: " << SrcMgr.getBuffer(ID)->getBufferIdentifier();
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if (F.second.Parent) {
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std::pair<FileID, unsigned> Decomp =
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SrcMgr.getDecomposedIncludedLoc(ID);
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assert(File.ParentOffset == Decomp.second);
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llvm::errs() << " parent " << File.Parent << " <FileID "
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<< Decomp.first.getHashValue() << "> ";
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SrcMgr.getLocForStartOfFile(Decomp.first)
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.getLocWithOffset(Decomp.second)
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.print(llvm::errs(), SrcMgr);
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}
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if (File.HasLocalTransitions)
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llvm::errs() << " has_local_transitions";
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llvm::errs() << "\n";
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};
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if (DiagName.empty())
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PrintOuterHeading();
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for (DiagStatePoint &Transition : File.StateTransitions) {
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bool PrintedInnerHeading = false;
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auto PrintInnerHeading = [&] {
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if (PrintedInnerHeading) return;
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PrintedInnerHeading = true;
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PrintOuterHeading();
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llvm::errs() << " ";
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SrcMgr.getLocForStartOfFile(ID)
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.getLocWithOffset(Transition.Offset)
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.print(llvm::errs(), SrcMgr);
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llvm::errs() << ": state " << Transition.State << ":\n";
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};
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if (DiagName.empty())
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PrintInnerHeading();
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for (auto &Mapping : *Transition.State) {
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StringRef Option =
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DiagnosticIDs::getWarningOptionForDiag(Mapping.first);
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if (!DiagName.empty() && DiagName != Option)
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continue;
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PrintInnerHeading();
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llvm::errs() << " ";
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if (Option.empty())
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llvm::errs() << "<unknown " << Mapping.first << ">";
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else
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llvm::errs() << Option;
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llvm::errs() << ": ";
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switch (Mapping.second.getSeverity()) {
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case diag::Severity::Ignored: llvm::errs() << "ignored"; break;
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case diag::Severity::Remark: llvm::errs() << "remark"; break;
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case diag::Severity::Warning: llvm::errs() << "warning"; break;
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case diag::Severity::Error: llvm::errs() << "error"; break;
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case diag::Severity::Fatal: llvm::errs() << "fatal"; break;
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}
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if (!Mapping.second.isUser())
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llvm::errs() << " default";
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if (Mapping.second.isPragma())
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llvm::errs() << " pragma";
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if (Mapping.second.hasNoWarningAsError())
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llvm::errs() << " no-error";
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if (Mapping.second.hasNoErrorAsFatal())
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llvm::errs() << " no-fatal";
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if (Mapping.second.wasUpgradedFromWarning())
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llvm::errs() << " overruled";
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llvm::errs() << "\n";
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}
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}
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}
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}
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void DiagnosticsEngine::PushDiagStatePoint(DiagState *State,
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SourceLocation Loc) {
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assert(Loc.isValid() && "Adding invalid loc point");
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DiagStatesByLoc.append(*SourceMgr, Loc, State);
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}
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void DiagnosticsEngine::setSeverity(diag::kind Diag, diag::Severity Map,
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SourceLocation L) {
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assert(Diag < diag::DIAG_UPPER_LIMIT &&
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"Can only map builtin diagnostics");
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assert((Diags->isBuiltinWarningOrExtension(Diag) ||
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(Map == diag::Severity::Fatal || Map == diag::Severity::Error)) &&
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"Cannot map errors into warnings!");
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assert((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location");
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// Don't allow a mapping to a warning override an error/fatal mapping.
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bool WasUpgradedFromWarning = false;
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if (Map == diag::Severity::Warning) {
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DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
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if (Info.getSeverity() == diag::Severity::Error ||
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Info.getSeverity() == diag::Severity::Fatal) {
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Map = Info.getSeverity();
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WasUpgradedFromWarning = true;
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}
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}
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DiagnosticMapping Mapping = makeUserMapping(Map, L);
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Mapping.setUpgradedFromWarning(WasUpgradedFromWarning);
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// Common case; setting all the diagnostics of a group in one place.
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if ((L.isInvalid() || L == DiagStatesByLoc.getCurDiagStateLoc()) &&
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DiagStatesByLoc.getCurDiagState()) {
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// FIXME: This is theoretically wrong: if the current state is shared with
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// some other location (via push/pop) we will change the state for that
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// other location as well. This cannot currently happen, as we can't update
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// the diagnostic state at the same location at which we pop.
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DiagStatesByLoc.getCurDiagState()->setMapping(Diag, Mapping);
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return;
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}
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// A diagnostic pragma occurred, create a new DiagState initialized with
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// the current one and a new DiagStatePoint to record at which location
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// the new state became active.
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DiagStates.push_back(*GetCurDiagState());
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DiagStates.back().setMapping(Diag, Mapping);
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PushDiagStatePoint(&DiagStates.back(), L);
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}
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bool DiagnosticsEngine::setSeverityForGroup(diag::Flavor Flavor,
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StringRef Group, diag::Severity Map,
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SourceLocation Loc) {
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// Get the diagnostics in this group.
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SmallVector<diag::kind, 256> GroupDiags;
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if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags))
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return true;
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// Set the mapping.
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for (diag::kind Diag : GroupDiags)
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setSeverity(Diag, Map, Loc);
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return false;
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}
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bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group,
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bool Enabled) {
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// If we are enabling this feature, just set the diagnostic mappings to map to
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// errors.
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if (Enabled)
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return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
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diag::Severity::Error);
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// Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and
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// potentially downgrade anything already mapped to be a warning.
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// Get the diagnostics in this group.
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SmallVector<diag::kind, 8> GroupDiags;
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if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
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GroupDiags))
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return true;
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// Perform the mapping change.
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for (diag::kind Diag : GroupDiags) {
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DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
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if (Info.getSeverity() == diag::Severity::Error ||
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Info.getSeverity() == diag::Severity::Fatal)
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Info.setSeverity(diag::Severity::Warning);
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Info.setNoWarningAsError(true);
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}
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return false;
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}
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bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group,
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bool Enabled) {
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// If we are enabling this feature, just set the diagnostic mappings to map to
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// fatal errors.
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if (Enabled)
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return setSeverityForGroup(diag::Flavor::WarningOrError, Group,
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diag::Severity::Fatal);
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// Otherwise, we want to set the diagnostic mapping's "no Wfatal-errors" bit,
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// and potentially downgrade anything already mapped to be a fatal error.
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// Get the diagnostics in this group.
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SmallVector<diag::kind, 8> GroupDiags;
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if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group,
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GroupDiags))
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return true;
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// Perform the mapping change.
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for (diag::kind Diag : GroupDiags) {
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DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag);
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if (Info.getSeverity() == diag::Severity::Fatal)
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Info.setSeverity(diag::Severity::Error);
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Info.setNoErrorAsFatal(true);
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}
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return false;
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}
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void DiagnosticsEngine::setSeverityForAll(diag::Flavor Flavor,
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diag::Severity Map,
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SourceLocation Loc) {
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// Get all the diagnostics.
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std::vector<diag::kind> AllDiags;
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DiagnosticIDs::getAllDiagnostics(Flavor, AllDiags);
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// Set the mapping.
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for (diag::kind Diag : AllDiags)
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if (Diags->isBuiltinWarningOrExtension(Diag))
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setSeverity(Diag, Map, Loc);
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}
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void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) {
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assert(CurDiagID == std::numeric_limits<unsigned>::max() &&
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"Multiple diagnostics in flight at once!");
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CurDiagLoc = storedDiag.getLocation();
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CurDiagID = storedDiag.getID();
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NumDiagArgs = 0;
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DiagRanges.clear();
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DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end());
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DiagFixItHints.clear();
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DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end());
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assert(Client && "DiagnosticConsumer not set!");
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Level DiagLevel = storedDiag.getLevel();
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Diagnostic Info(this, storedDiag.getMessage());
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Client->HandleDiagnostic(DiagLevel, Info);
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if (Client->IncludeInDiagnosticCounts()) {
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if (DiagLevel == DiagnosticsEngine::Warning)
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++NumWarnings;
|
|
}
|
|
|
|
CurDiagID = std::numeric_limits<unsigned>::max();
|
|
}
|
|
|
|
bool DiagnosticsEngine::EmitCurrentDiagnostic(bool Force) {
|
|
assert(getClient() && "DiagnosticClient not set!");
|
|
|
|
bool Emitted;
|
|
if (Force) {
|
|
Diagnostic Info(this);
|
|
|
|
// Figure out the diagnostic level of this message.
|
|
DiagnosticIDs::Level DiagLevel
|
|
= Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this);
|
|
|
|
Emitted = (DiagLevel != DiagnosticIDs::Ignored);
|
|
if (Emitted) {
|
|
// Emit the diagnostic regardless of suppression level.
|
|
Diags->EmitDiag(*this, DiagLevel);
|
|
}
|
|
} else {
|
|
// Process the diagnostic, sending the accumulated information to the
|
|
// DiagnosticConsumer.
|
|
Emitted = ProcessDiag();
|
|
}
|
|
|
|
// Clear out the current diagnostic object.
|
|
Clear();
|
|
|
|
// If there was a delayed diagnostic, emit it now.
|
|
if (!Force && DelayedDiagID)
|
|
ReportDelayed();
|
|
|
|
return Emitted;
|
|
}
|
|
|
|
DiagnosticConsumer::~DiagnosticConsumer() = default;
|
|
|
|
void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
|
|
const Diagnostic &Info) {
|
|
if (!IncludeInDiagnosticCounts())
|
|
return;
|
|
|
|
if (DiagLevel == DiagnosticsEngine::Warning)
|
|
++NumWarnings;
|
|
else if (DiagLevel >= DiagnosticsEngine::Error)
|
|
++NumErrors;
|
|
}
|
|
|
|
/// ModifierIs - Return true if the specified modifier matches specified string.
|
|
template <std::size_t StrLen>
|
|
static bool ModifierIs(const char *Modifier, unsigned ModifierLen,
|
|
const char (&Str)[StrLen]) {
|
|
return StrLen-1 == ModifierLen && memcmp(Modifier, Str, StrLen-1) == 0;
|
|
}
|
|
|
|
/// ScanForward - Scans forward, looking for the given character, skipping
|
|
/// nested clauses and escaped characters.
|
|
static const char *ScanFormat(const char *I, const char *E, char Target) {
|
|
unsigned Depth = 0;
|
|
|
|
for ( ; I != E; ++I) {
|
|
if (Depth == 0 && *I == Target) return I;
|
|
if (Depth != 0 && *I == '}') Depth--;
|
|
|
|
if (*I == '%') {
|
|
I++;
|
|
if (I == E) break;
|
|
|
|
// Escaped characters get implicitly skipped here.
|
|
|
|
// Format specifier.
|
|
if (!isDigit(*I) && !isPunctuation(*I)) {
|
|
for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ;
|
|
if (I == E) break;
|
|
if (*I == '{')
|
|
Depth++;
|
|
}
|
|
}
|
|
}
|
|
return E;
|
|
}
|
|
|
|
/// HandleSelectModifier - Handle the integer 'select' modifier. This is used
|
|
/// like this: %select{foo|bar|baz}2. This means that the integer argument
|
|
/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
|
|
/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
|
|
/// This is very useful for certain classes of variant diagnostics.
|
|
static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo,
|
|
const char *Argument, unsigned ArgumentLen,
|
|
SmallVectorImpl<char> &OutStr) {
|
|
const char *ArgumentEnd = Argument+ArgumentLen;
|
|
|
|
// Skip over 'ValNo' |'s.
|
|
while (ValNo) {
|
|
const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|');
|
|
assert(NextVal != ArgumentEnd && "Value for integer select modifier was"
|
|
" larger than the number of options in the diagnostic string!");
|
|
Argument = NextVal+1; // Skip this string.
|
|
--ValNo;
|
|
}
|
|
|
|
// Get the end of the value. This is either the } or the |.
|
|
const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|');
|
|
|
|
// Recursively format the result of the select clause into the output string.
|
|
DInfo.FormatDiagnostic(Argument, EndPtr, OutStr);
|
|
}
|
|
|
|
/// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the
|
|
/// letter 's' to the string if the value is not 1. This is used in cases like
|
|
/// this: "you idiot, you have %4 parameter%s4!".
|
|
static void HandleIntegerSModifier(unsigned ValNo,
|
|
SmallVectorImpl<char> &OutStr) {
|
|
if (ValNo != 1)
|
|
OutStr.push_back('s');
|
|
}
|
|
|
|
/// HandleOrdinalModifier - Handle the integer 'ord' modifier. This
|
|
/// prints the ordinal form of the given integer, with 1 corresponding
|
|
/// to the first ordinal. Currently this is hard-coded to use the
|
|
/// English form.
|
|
static void HandleOrdinalModifier(unsigned ValNo,
|
|
SmallVectorImpl<char> &OutStr) {
|
|
assert(ValNo != 0 && "ValNo must be strictly positive!");
|
|
|
|
llvm::raw_svector_ostream Out(OutStr);
|
|
|
|
// We could use text forms for the first N ordinals, but the numeric
|
|
// forms are actually nicer in diagnostics because they stand out.
|
|
Out << ValNo << llvm::getOrdinalSuffix(ValNo);
|
|
}
|
|
|
|
/// PluralNumber - Parse an unsigned integer and advance Start.
|
|
static unsigned PluralNumber(const char *&Start, const char *End) {
|
|
// Programming 101: Parse a decimal number :-)
|
|
unsigned Val = 0;
|
|
while (Start != End && *Start >= '0' && *Start <= '9') {
|
|
Val *= 10;
|
|
Val += *Start - '0';
|
|
++Start;
|
|
}
|
|
return Val;
|
|
}
|
|
|
|
/// TestPluralRange - Test if Val is in the parsed range. Modifies Start.
|
|
static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) {
|
|
if (*Start != '[') {
|
|
unsigned Ref = PluralNumber(Start, End);
|
|
return Ref == Val;
|
|
}
|
|
|
|
++Start;
|
|
unsigned Low = PluralNumber(Start, End);
|
|
assert(*Start == ',' && "Bad plural expression syntax: expected ,");
|
|
++Start;
|
|
unsigned High = PluralNumber(Start, End);
|
|
assert(*Start == ']' && "Bad plural expression syntax: expected )");
|
|
++Start;
|
|
return Low <= Val && Val <= High;
|
|
}
|
|
|
|
/// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier.
|
|
static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) {
|
|
// Empty condition?
|
|
if (*Start == ':')
|
|
return true;
|
|
|
|
while (true) {
|
|
char C = *Start;
|
|
if (C == '%') {
|
|
// Modulo expression
|
|
++Start;
|
|
unsigned Arg = PluralNumber(Start, End);
|
|
assert(*Start == '=' && "Bad plural expression syntax: expected =");
|
|
++Start;
|
|
unsigned ValMod = ValNo % Arg;
|
|
if (TestPluralRange(ValMod, Start, End))
|
|
return true;
|
|
} else {
|
|
assert((C == '[' || (C >= '0' && C <= '9')) &&
|
|
"Bad plural expression syntax: unexpected character");
|
|
// Range expression
|
|
if (TestPluralRange(ValNo, Start, End))
|
|
return true;
|
|
}
|
|
|
|
// Scan for next or-expr part.
|
|
Start = std::find(Start, End, ',');
|
|
if (Start == End)
|
|
break;
|
|
++Start;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
|
|
/// for complex plural forms, or in languages where all plurals are complex.
|
|
/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
|
|
/// conditions that are tested in order, the form corresponding to the first
|
|
/// that applies being emitted. The empty condition is always true, making the
|
|
/// last form a default case.
|
|
/// Conditions are simple boolean expressions, where n is the number argument.
|
|
/// Here are the rules.
|
|
/// condition := expression | empty
|
|
/// empty := -> always true
|
|
/// expression := numeric [',' expression] -> logical or
|
|
/// numeric := range -> true if n in range
|
|
/// | '%' number '=' range -> true if n % number in range
|
|
/// range := number
|
|
/// | '[' number ',' number ']' -> ranges are inclusive both ends
|
|
///
|
|
/// Here are some examples from the GNU gettext manual written in this form:
|
|
/// English:
|
|
/// {1:form0|:form1}
|
|
/// Latvian:
|
|
/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
|
|
/// Gaeilge:
|
|
/// {1:form0|2:form1|:form2}
|
|
/// Romanian:
|
|
/// {1:form0|0,%100=[1,19]:form1|:form2}
|
|
/// Lithuanian:
|
|
/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
|
|
/// Russian (requires repeated form):
|
|
/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
|
|
/// Slovak
|
|
/// {1:form0|[2,4]:form1|:form2}
|
|
/// Polish (requires repeated form):
|
|
/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
|
|
static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo,
|
|
const char *Argument, unsigned ArgumentLen,
|
|
SmallVectorImpl<char> &OutStr) {
|
|
const char *ArgumentEnd = Argument + ArgumentLen;
|
|
while (true) {
|
|
assert(Argument < ArgumentEnd && "Plural expression didn't match.");
|
|
const char *ExprEnd = Argument;
|
|
while (*ExprEnd != ':') {
|
|
assert(ExprEnd != ArgumentEnd && "Plural missing expression end");
|
|
++ExprEnd;
|
|
}
|
|
if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
|
|
Argument = ExprEnd + 1;
|
|
ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
|
|
|
|
// Recursively format the result of the plural clause into the
|
|
// output string.
|
|
DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr);
|
|
return;
|
|
}
|
|
Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
|
|
}
|
|
}
|
|
|
|
/// Returns the friendly description for a token kind that will appear
|
|
/// without quotes in diagnostic messages. These strings may be translatable in
|
|
/// future.
|
|
static const char *getTokenDescForDiagnostic(tok::TokenKind Kind) {
|
|
switch (Kind) {
|
|
case tok::identifier:
|
|
return "identifier";
|
|
default:
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
/// FormatDiagnostic - Format this diagnostic into a string, substituting the
|
|
/// formal arguments into the %0 slots. The result is appended onto the Str
|
|
/// array.
|
|
void Diagnostic::
|
|
FormatDiagnostic(SmallVectorImpl<char> &OutStr) const {
|
|
if (!StoredDiagMessage.empty()) {
|
|
OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
|
|
return;
|
|
}
|
|
|
|
StringRef Diag =
|
|
getDiags()->getDiagnosticIDs()->getDescription(getID());
|
|
|
|
FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
|
|
}
|
|
|
|
void Diagnostic::
|
|
FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
|
|
SmallVectorImpl<char> &OutStr) const {
|
|
// When the diagnostic string is only "%0", the entire string is being given
|
|
// by an outside source. Remove unprintable characters from this string
|
|
// and skip all the other string processing.
|
|
if (DiagEnd - DiagStr == 2 &&
|
|
StringRef(DiagStr, DiagEnd - DiagStr).equals("%0") &&
|
|
getArgKind(0) == DiagnosticsEngine::ak_std_string) {
|
|
const std::string &S = getArgStdStr(0);
|
|
for (char c : S) {
|
|
if (llvm::sys::locale::isPrint(c) || c == '\t') {
|
|
OutStr.push_back(c);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
/// FormattedArgs - Keep track of all of the arguments formatted by
|
|
/// ConvertArgToString and pass them into subsequent calls to
|
|
/// ConvertArgToString, allowing the implementation to avoid redundancies in
|
|
/// obvious cases.
|
|
SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs;
|
|
|
|
/// QualTypeVals - Pass a vector of arrays so that QualType names can be
|
|
/// compared to see if more information is needed to be printed.
|
|
SmallVector<intptr_t, 2> QualTypeVals;
|
|
SmallVector<char, 64> Tree;
|
|
|
|
for (unsigned i = 0, e = getNumArgs(); i < e; ++i)
|
|
if (getArgKind(i) == DiagnosticsEngine::ak_qualtype)
|
|
QualTypeVals.push_back(getRawArg(i));
|
|
|
|
while (DiagStr != DiagEnd) {
|
|
if (DiagStr[0] != '%') {
|
|
// Append non-%0 substrings to Str if we have one.
|
|
const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
|
|
OutStr.append(DiagStr, StrEnd);
|
|
DiagStr = StrEnd;
|
|
continue;
|
|
} else if (isPunctuation(DiagStr[1])) {
|
|
OutStr.push_back(DiagStr[1]); // %% -> %.
|
|
DiagStr += 2;
|
|
continue;
|
|
}
|
|
|
|
// Skip the %.
|
|
++DiagStr;
|
|
|
|
// This must be a placeholder for a diagnostic argument. The format for a
|
|
// placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
|
|
// The digit is a number from 0-9 indicating which argument this comes from.
|
|
// The modifier is a string of digits from the set [-a-z]+, arguments is a
|
|
// brace enclosed string.
|
|
const char *Modifier = nullptr, *Argument = nullptr;
|
|
unsigned ModifierLen = 0, ArgumentLen = 0;
|
|
|
|
// Check to see if we have a modifier. If so eat it.
|
|
if (!isDigit(DiagStr[0])) {
|
|
Modifier = DiagStr;
|
|
while (DiagStr[0] == '-' ||
|
|
(DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
|
|
++DiagStr;
|
|
ModifierLen = DiagStr-Modifier;
|
|
|
|
// If we have an argument, get it next.
|
|
if (DiagStr[0] == '{') {
|
|
++DiagStr; // Skip {.
|
|
Argument = DiagStr;
|
|
|
|
DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
|
|
assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!");
|
|
ArgumentLen = DiagStr-Argument;
|
|
++DiagStr; // Skip }.
|
|
}
|
|
}
|
|
|
|
assert(isDigit(*DiagStr) && "Invalid format for argument in diagnostic");
|
|
unsigned ArgNo = *DiagStr++ - '0';
|
|
|
|
// Only used for type diffing.
|
|
unsigned ArgNo2 = ArgNo;
|
|
|
|
DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo);
|
|
if (ModifierIs(Modifier, ModifierLen, "diff")) {
|
|
assert(*DiagStr == ',' && isDigit(*(DiagStr + 1)) &&
|
|
"Invalid format for diff modifier");
|
|
++DiagStr; // Comma.
|
|
ArgNo2 = *DiagStr++ - '0';
|
|
DiagnosticsEngine::ArgumentKind Kind2 = getArgKind(ArgNo2);
|
|
if (Kind == DiagnosticsEngine::ak_qualtype &&
|
|
Kind2 == DiagnosticsEngine::ak_qualtype)
|
|
Kind = DiagnosticsEngine::ak_qualtype_pair;
|
|
else {
|
|
// %diff only supports QualTypes. For other kinds of arguments,
|
|
// use the default printing. For example, if the modifier is:
|
|
// "%diff{compare $ to $|other text}1,2"
|
|
// treat it as:
|
|
// "compare %1 to %2"
|
|
const char *ArgumentEnd = Argument + ArgumentLen;
|
|
const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
|
|
assert(ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd &&
|
|
"Found too many '|'s in a %diff modifier!");
|
|
const char *FirstDollar = ScanFormat(Argument, Pipe, '$');
|
|
const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$');
|
|
const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) };
|
|
const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) };
|
|
FormatDiagnostic(Argument, FirstDollar, OutStr);
|
|
FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr);
|
|
FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
|
|
FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr);
|
|
FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
switch (Kind) {
|
|
// ---- STRINGS ----
|
|
case DiagnosticsEngine::ak_std_string: {
|
|
const std::string &S = getArgStdStr(ArgNo);
|
|
assert(ModifierLen == 0 && "No modifiers for strings yet");
|
|
OutStr.append(S.begin(), S.end());
|
|
break;
|
|
}
|
|
case DiagnosticsEngine::ak_c_string: {
|
|
const char *S = getArgCStr(ArgNo);
|
|
assert(ModifierLen == 0 && "No modifiers for strings yet");
|
|
|
|
// Don't crash if get passed a null pointer by accident.
|
|
if (!S)
|
|
S = "(null)";
|
|
|
|
OutStr.append(S, S + strlen(S));
|
|
break;
|
|
}
|
|
// ---- INTEGERS ----
|
|
case DiagnosticsEngine::ak_sint: {
|
|
int Val = getArgSInt(ArgNo);
|
|
|
|
if (ModifierIs(Modifier, ModifierLen, "select")) {
|
|
HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen,
|
|
OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "s")) {
|
|
HandleIntegerSModifier(Val, OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "plural")) {
|
|
HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
|
|
OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
|
|
HandleOrdinalModifier((unsigned)Val, OutStr);
|
|
} else {
|
|
assert(ModifierLen == 0 && "Unknown integer modifier");
|
|
llvm::raw_svector_ostream(OutStr) << Val;
|
|
}
|
|
break;
|
|
}
|
|
case DiagnosticsEngine::ak_uint: {
|
|
unsigned Val = getArgUInt(ArgNo);
|
|
|
|
if (ModifierIs(Modifier, ModifierLen, "select")) {
|
|
HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "s")) {
|
|
HandleIntegerSModifier(Val, OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "plural")) {
|
|
HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen,
|
|
OutStr);
|
|
} else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
|
|
HandleOrdinalModifier(Val, OutStr);
|
|
} else {
|
|
assert(ModifierLen == 0 && "Unknown integer modifier");
|
|
llvm::raw_svector_ostream(OutStr) << Val;
|
|
}
|
|
break;
|
|
}
|
|
// ---- TOKEN SPELLINGS ----
|
|
case DiagnosticsEngine::ak_tokenkind: {
|
|
tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo));
|
|
assert(ModifierLen == 0 && "No modifiers for token kinds yet");
|
|
|
|
llvm::raw_svector_ostream Out(OutStr);
|
|
if (const char *S = tok::getPunctuatorSpelling(Kind))
|
|
// Quoted token spelling for punctuators.
|
|
Out << '\'' << S << '\'';
|
|
else if (const char *S = tok::getKeywordSpelling(Kind))
|
|
// Unquoted token spelling for keywords.
|
|
Out << S;
|
|
else if (const char *S = getTokenDescForDiagnostic(Kind))
|
|
// Unquoted translatable token name.
|
|
Out << S;
|
|
else if (const char *S = tok::getTokenName(Kind))
|
|
// Debug name, shouldn't appear in user-facing diagnostics.
|
|
Out << '<' << S << '>';
|
|
else
|
|
Out << "(null)";
|
|
break;
|
|
}
|
|
// ---- NAMES and TYPES ----
|
|
case DiagnosticsEngine::ak_identifierinfo: {
|
|
const IdentifierInfo *II = getArgIdentifier(ArgNo);
|
|
assert(ModifierLen == 0 && "No modifiers for strings yet");
|
|
|
|
// Don't crash if get passed a null pointer by accident.
|
|
if (!II) {
|
|
const char *S = "(null)";
|
|
OutStr.append(S, S + strlen(S));
|
|
continue;
|
|
}
|
|
|
|
llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
|
|
break;
|
|
}
|
|
case DiagnosticsEngine::ak_qual:
|
|
case DiagnosticsEngine::ak_qualtype:
|
|
case DiagnosticsEngine::ak_declarationname:
|
|
case DiagnosticsEngine::ak_nameddecl:
|
|
case DiagnosticsEngine::ak_nestednamespec:
|
|
case DiagnosticsEngine::ak_declcontext:
|
|
case DiagnosticsEngine::ak_attr:
|
|
getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
|
|
StringRef(Modifier, ModifierLen),
|
|
StringRef(Argument, ArgumentLen),
|
|
FormattedArgs,
|
|
OutStr, QualTypeVals);
|
|
break;
|
|
case DiagnosticsEngine::ak_qualtype_pair: {
|
|
// Create a struct with all the info needed for printing.
|
|
TemplateDiffTypes TDT;
|
|
TDT.FromType = getRawArg(ArgNo);
|
|
TDT.ToType = getRawArg(ArgNo2);
|
|
TDT.ElideType = getDiags()->ElideType;
|
|
TDT.ShowColors = getDiags()->ShowColors;
|
|
TDT.TemplateDiffUsed = false;
|
|
intptr_t val = reinterpret_cast<intptr_t>(&TDT);
|
|
|
|
const char *ArgumentEnd = Argument + ArgumentLen;
|
|
const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|');
|
|
|
|
// Print the tree. If this diagnostic already has a tree, skip the
|
|
// second tree.
|
|
if (getDiags()->PrintTemplateTree && Tree.empty()) {
|
|
TDT.PrintFromType = true;
|
|
TDT.PrintTree = true;
|
|
getDiags()->ConvertArgToString(Kind, val,
|
|
StringRef(Modifier, ModifierLen),
|
|
StringRef(Argument, ArgumentLen),
|
|
FormattedArgs,
|
|
Tree, QualTypeVals);
|
|
// If there is no tree information, fall back to regular printing.
|
|
if (!Tree.empty()) {
|
|
FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Non-tree printing, also the fall-back when tree printing fails.
|
|
// The fall-back is triggered when the types compared are not templates.
|
|
const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$');
|
|
const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$');
|
|
|
|
// Append before text
|
|
FormatDiagnostic(Argument, FirstDollar, OutStr);
|
|
|
|
// Append first type
|
|
TDT.PrintTree = false;
|
|
TDT.PrintFromType = true;
|
|
getDiags()->ConvertArgToString(Kind, val,
|
|
StringRef(Modifier, ModifierLen),
|
|
StringRef(Argument, ArgumentLen),
|
|
FormattedArgs,
|
|
OutStr, QualTypeVals);
|
|
if (!TDT.TemplateDiffUsed)
|
|
FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
|
|
TDT.FromType));
|
|
|
|
// Append middle text
|
|
FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr);
|
|
|
|
// Append second type
|
|
TDT.PrintFromType = false;
|
|
getDiags()->ConvertArgToString(Kind, val,
|
|
StringRef(Modifier, ModifierLen),
|
|
StringRef(Argument, ArgumentLen),
|
|
FormattedArgs,
|
|
OutStr, QualTypeVals);
|
|
if (!TDT.TemplateDiffUsed)
|
|
FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype,
|
|
TDT.ToType));
|
|
|
|
// Append end text
|
|
FormatDiagnostic(SecondDollar + 1, Pipe, OutStr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Remember this argument info for subsequent formatting operations. Turn
|
|
// std::strings into a null terminated string to make it be the same case as
|
|
// all the other ones.
|
|
if (Kind == DiagnosticsEngine::ak_qualtype_pair)
|
|
continue;
|
|
else if (Kind != DiagnosticsEngine::ak_std_string)
|
|
FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
|
|
else
|
|
FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string,
|
|
(intptr_t)getArgStdStr(ArgNo).c_str()));
|
|
}
|
|
|
|
// Append the type tree to the end of the diagnostics.
|
|
OutStr.append(Tree.begin(), Tree.end());
|
|
}
|
|
|
|
StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
|
|
StringRef Message)
|
|
: ID(ID), Level(Level), Message(Message) {}
|
|
|
|
StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level,
|
|
const Diagnostic &Info)
|
|
: ID(Info.getID()), Level(Level) {
|
|
assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) &&
|
|
"Valid source location without setting a source manager for diagnostic");
|
|
if (Info.getLocation().isValid())
|
|
Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager());
|
|
SmallString<64> Message;
|
|
Info.FormatDiagnostic(Message);
|
|
this->Message.assign(Message.begin(), Message.end());
|
|
this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end());
|
|
this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end());
|
|
}
|
|
|
|
StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID,
|
|
StringRef Message, FullSourceLoc Loc,
|
|
ArrayRef<CharSourceRange> Ranges,
|
|
ArrayRef<FixItHint> FixIts)
|
|
: ID(ID), Level(Level), Loc(Loc), Message(Message),
|
|
Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end())
|
|
{
|
|
}
|
|
|
|
/// IncludeInDiagnosticCounts - This method (whose default implementation
|
|
/// returns true) indicates whether the diagnostics handled by this
|
|
/// DiagnosticConsumer should be included in the number of diagnostics
|
|
/// reported by DiagnosticsEngine.
|
|
bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; }
|
|
|
|
void IgnoringDiagConsumer::anchor() {}
|
|
|
|
ForwardingDiagnosticConsumer::~ForwardingDiagnosticConsumer() = default;
|
|
|
|
void ForwardingDiagnosticConsumer::HandleDiagnostic(
|
|
DiagnosticsEngine::Level DiagLevel,
|
|
const Diagnostic &Info) {
|
|
Target.HandleDiagnostic(DiagLevel, Info);
|
|
}
|
|
|
|
void ForwardingDiagnosticConsumer::clear() {
|
|
DiagnosticConsumer::clear();
|
|
Target.clear();
|
|
}
|
|
|
|
bool ForwardingDiagnosticConsumer::IncludeInDiagnosticCounts() const {
|
|
return Target.IncludeInDiagnosticCounts();
|
|
}
|
|
|
|
PartialDiagnostic::StorageAllocator::StorageAllocator() {
|
|
for (unsigned I = 0; I != NumCached; ++I)
|
|
FreeList[I] = Cached + I;
|
|
NumFreeListEntries = NumCached;
|
|
}
|
|
|
|
PartialDiagnostic::StorageAllocator::~StorageAllocator() {
|
|
// Don't assert if we are in a CrashRecovery context, as this invariant may
|
|
// be invalidated during a crash.
|
|
assert((NumFreeListEntries == NumCached ||
|
|
llvm::CrashRecoveryContext::isRecoveringFromCrash()) &&
|
|
"A partial is on the lam");
|
|
}
|
|
|
|
char DiagnosticError::ID;
|