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d0262c2394
Most of `MemoryBuffer` interfaces expose a `RequiresNullTerminator` parameter that's being used to: * determine how to open a file (`mmap` vs `open`), * assert newly initialized buffer indeed has an implicit null terminator. This patch adds the paramater to the `SmallVectorMemoryBuffer` constructors, meaning: * null terminator can now be added to `SmallVector`s that didn't have one before, * `SmallVectors` that had a null terminator before keep it even after the move. In line with existing code, the new parameter is defaulted to `true`. This patch makes sure all calls to the `SmallVectorMemoryBuffer` constructor set it to `false` to preserve the current semantics. Reviewed By: dexonsmith Differential Revision: https://reviews.llvm.org/D115331
101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
//===- unittests/Frontend/TextDiagnosticTest.cpp - ------------------------===//
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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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#include "clang/Frontend/TextDiagnostic.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/SourceManager.h"
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#include "llvm/Support/SmallVectorMemoryBuffer.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace clang;
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namespace {
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/// Prints a diagnostic with the given DiagnosticOptions and the given
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/// SourceLocation and returns the printed diagnostic text.
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static std::string PrintDiag(const DiagnosticOptions &Opts, FullSourceLoc Loc) {
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std::string Out;
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llvm::raw_string_ostream OS(Out);
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clang::LangOptions LangOpts;
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// Owned by TextDiagnostic.
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DiagnosticOptions *DiagOpts = new DiagnosticOptions(Opts);
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TextDiagnostic Diag(OS, LangOpts, DiagOpts);
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// Emit a dummy diagnostic that is just 'message'.
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Diag.emitDiagnostic(Loc, DiagnosticsEngine::Level::Warning, "message",
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/*Ranges=*/{}, /*FixItHints=*/{});
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OS.flush();
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return Out;
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}
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TEST(TextDiagnostic, ShowLine) {
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// Create dummy FileManager and SourceManager.
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FileSystemOptions FSOpts;
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FileManager FileMgr(FSOpts);
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IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs);
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DiagnosticsEngine DiagEngine(DiagID, new DiagnosticOptions,
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new IgnoringDiagConsumer());
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SourceManager SrcMgr(DiagEngine, FileMgr);
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// Create a dummy file with some contents to produce a test SourceLocation.
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const llvm::StringRef file_path = "main.cpp";
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const llvm::StringRef main_file_contents = "some\nsource\ncode\n";
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const clang::FileEntryRef fe = FileMgr.getVirtualFileRef(
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file_path,
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/*Size=*/static_cast<off_t>(main_file_contents.size()),
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/*ModificationTime=*/0);
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llvm::SmallVector<char, 64> buffer;
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buffer.append(main_file_contents.begin(), main_file_contents.end());
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auto file_contents = std::make_unique<llvm::SmallVectorMemoryBuffer>(
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std::move(buffer), file_path, /*RequiresNullTerminator=*/false);
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SrcMgr.overrideFileContents(fe, std::move(file_contents));
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// Create the actual file id and use it as the main file.
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clang::FileID fid =
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SrcMgr.createFileID(fe, SourceLocation(), clang::SrcMgr::C_User);
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SrcMgr.setMainFileID(fid);
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// Create the source location for the test diagnostic.
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FullSourceLoc Loc(SrcMgr.translateLineCol(fid, /*Line=*/1, /*Col=*/2),
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SrcMgr);
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DiagnosticOptions DiagOpts;
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DiagOpts.ShowLine = true;
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DiagOpts.ShowColumn = true;
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// Hide printing the source line/caret to make the diagnostic shorter and it's
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// not relevant for this test.
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DiagOpts.ShowCarets = false;
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EXPECT_EQ("main.cpp:1:2: warning: message\n", PrintDiag(DiagOpts, Loc));
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// Check that ShowLine doesn't influence the Vi/MSVC diagnostic formats as its
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// a Clang-specific diagnostic option.
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DiagOpts.setFormat(TextDiagnosticFormat::Vi);
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DiagOpts.ShowLine = false;
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EXPECT_EQ("main.cpp +1:2: warning: message\n", PrintDiag(DiagOpts, Loc));
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DiagOpts.setFormat(TextDiagnosticFormat::MSVC);
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DiagOpts.ShowLine = false;
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EXPECT_EQ("main.cpp(1,2): warning: message\n", PrintDiag(DiagOpts, Loc));
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// Reset back to the Clang format.
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DiagOpts.setFormat(TextDiagnosticFormat::Clang);
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// Hide line number but show column.
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DiagOpts.ShowLine = false;
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EXPECT_EQ("main.cpp:2: warning: message\n", PrintDiag(DiagOpts, Loc));
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// Show line number but hide column.
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DiagOpts.ShowLine = true;
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DiagOpts.ShowColumn = false;
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EXPECT_EQ("main.cpp:1: warning: message\n", PrintDiag(DiagOpts, Loc));
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}
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} // anonymous namespace
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