From: Sam McCall Date: Mon, 16 Dec 2019 14:57:43 +0000 (+0100) Subject: Revert "[clangd] Reapply b60896fad926 Fall back to selecting token-before-cursor... X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f876d5105507f874c0fb86bc779c9853eab3fe2;p=platform%2Fupstream%2Fllvm.git Revert "[clangd] Reapply b60896fad926 Fall back to selecting token-before-cursor if token-after-cursor fails." This reverts commit 2500a8d5d8813a3e31fc9ba8dd45e211439a1e3d. --- diff --git a/clang-tools-extra/clangd/ClangdServer.cpp b/clang-tools-extra/clangd/ClangdServer.cpp index 90bdc68..40fa28a 100644 --- a/clang-tools-extra/clangd/ClangdServer.cpp +++ b/clang-tools-extra/clangd/ClangdServer.cpp @@ -374,8 +374,7 @@ void ClangdServer::rename(PathRef File, Position Pos, llvm::StringRef NewName, WorkScheduler.runWithAST("Rename", File, std::move(Action)); } -// May generate several candidate selections, due to SelectionTree ambiguity. -static llvm::Expected> +static llvm::Expected tweakSelection(const Range &Sel, const InputsAndAST &AST) { auto Begin = positionToOffset(AST.Inputs.Contents, Sel.start); if (!Begin) @@ -383,15 +382,7 @@ tweakSelection(const Range &Sel, const InputsAndAST &AST) { auto End = positionToOffset(AST.Inputs.Contents, Sel.end); if (!End) return End.takeError(); - std::vector Result; - SelectionTree::createEach(AST.AST.getASTContext(), AST.AST.getTokens(), - *Begin, *End, [&](SelectionTree T) { - Result.emplace_back(AST.Inputs.Index, AST.AST, - *Begin, *End, std::move(T)); - return false; - }); - assert(!Result.empty() && "Expected at least one SelectionTree"); - return Result; + return Tweak::Selection(AST.Inputs.Index, AST.AST, *Begin, *End); } void ClangdServer::enumerateTweaks(PathRef File, Range Sel, @@ -400,21 +391,12 @@ void ClangdServer::enumerateTweaks(PathRef File, Range Sel, this](Expected InpAST) mutable { if (!InpAST) return CB(InpAST.takeError()); - auto Selections = tweakSelection(Sel, *InpAST); - if (!Selections) - return CB(Selections.takeError()); + auto Selection = tweakSelection(Sel, *InpAST); + if (!Selection) + return CB(Selection.takeError()); std::vector Res; - // Don't allow a tweak to fire more than once across ambiguous selections. - llvm::DenseSet PreparedTweaks; - auto Filter = [&](const Tweak &T) { - return TweakFilter(T) && !PreparedTweaks.count(T.id()); - }; - for (const auto &Sel : *Selections) { - for (auto &T : prepareTweaks(Sel, Filter)) { - Res.push_back({T->id(), T->title(), T->intent()}); - PreparedTweaks.insert(T->id()); - } - } + for (auto &T : prepareTweaks(*Selection, TweakFilter)) + Res.push_back({T->id(), T->title(), T->intent()}); CB(std::move(Res)); }; @@ -429,30 +411,21 @@ void ClangdServer::applyTweak(PathRef File, Range Sel, StringRef TweakID, FS = FSProvider.getFileSystem()](Expected InpAST) mutable { if (!InpAST) return CB(InpAST.takeError()); - auto Selections = tweakSelection(Sel, *InpAST); - if (!Selections) - return CB(Selections.takeError()); - llvm::Optional> Effect; - // Try each selection, take the first one that prepare()s. - // If they all fail, Effect will hold get the last error. - for (const auto &Selection : *Selections) { - auto T = prepareTweak(TweakID, Selection); - if (T) { - Effect = (*T)->apply(Selection); - break; - } - Effect = T.takeError(); - } - assert(Effect.hasValue() && "Expected at least one selection"); - if (*Effect) { - // Tweaks don't apply clang-format, do that centrally here. - for (auto &It : (*Effect)->ApplyEdits) { - Edit &E = It.second; - format::FormatStyle Style = - getFormatStyleForFile(File, E.InitialCode, FS.get()); - if (llvm::Error Err = reformatEdit(E, Style)) - elog("Failed to format {0}: {1}", It.first(), std::move(Err)); - } + auto Selection = tweakSelection(Sel, *InpAST); + if (!Selection) + return CB(Selection.takeError()); + auto A = prepareTweak(TweakID, *Selection); + if (!A) + return CB(A.takeError()); + auto Effect = (*A)->apply(*Selection); + if (!Effect) + return CB(Effect.takeError()); + for (auto &It : Effect->ApplyEdits) { + Edit &E = It.second; + format::FormatStyle Style = + getFormatStyleForFile(File, E.InitialCode, FS.get()); + if (llvm::Error Err = reformatEdit(E, Style)) + elog("Failed to format {0}: {1}", It.first(), std::move(Err)); } return CB(std::move(*Effect)); }; diff --git a/clang-tools-extra/clangd/Hover.cpp b/clang-tools-extra/clangd/Hover.cpp index 904ae3e..f55a9c3 100644 --- a/clang-tools-extra/clangd/Hover.cpp +++ b/clang-tools-extra/clangd/Hover.cpp @@ -410,12 +410,9 @@ llvm::Optional getHover(ParsedAST &AST, Position Pos, llvm::consumeError(Offset.takeError()); return llvm::None; } - // Editors send the position on the left of the hovered character. - // So our selection tree should be biased right. (Tested with VSCode). - SelectionTree ST = SelectionTree::createRight( - AST.getASTContext(), AST.getTokens(), *Offset, *Offset); + SelectionTree Selection(AST.getASTContext(), AST.getTokens(), *Offset); std::vector Result; - if (const SelectionTree::Node *N = ST.commonAncestor()) { + if (const SelectionTree::Node *N = Selection.commonAncestor()) { DeclRelationSet Rel = DeclRelation::TemplatePattern | DeclRelation::Alias; auto Decls = targetDecl(N->ASTNode, Rel); if (!Decls.empty()) { diff --git a/clang-tools-extra/clangd/Selection.cpp b/clang-tools-extra/clangd/Selection.cpp index 4dae2f7..ffa48f3 100644 --- a/clang-tools-extra/clangd/Selection.cpp +++ b/clang-tools-extra/clangd/Selection.cpp @@ -142,11 +142,6 @@ void update(SelectionTree::Selection &Result, SelectionTree::Selection New) { Result = SelectionTree::Partial; } -// As well as comments, don't count semicolons as real tokens. -// They're not properly claimed as expr-statement is missing from the AST. -bool shouldIgnore(const syntax::Token &Tok) { - return Tok.kind() == tok::comment || Tok.kind() == tok::semi; -} // SelectionTester can determine whether a range of tokens from the PP-expanded // stream (corresponding to an AST node) is considered selected. @@ -177,7 +172,9 @@ public: }); // Precompute selectedness and offset for selected spelled tokens. for (const syntax::Token *T = SelFirst; T < SelLimit; ++T) { - if (shouldIgnore(*T)) + // As well as comments, don't count semicolons as real tokens. + // They're not properly claimed as expr-statement is missing from the AST. + if (T->kind() == tok::comment || T->kind() == tok::semi) continue; SpelledTokens.emplace_back(); Tok &S = SpelledTokens.back(); @@ -653,49 +650,24 @@ std::string SelectionTree::Node::kind() const { return std::move(OS.str()); } -// Decide which selections emulate a "point" query in between characters. -// If it's ambiguous (the neighboring characters are selectable tokens), returns -// both possibilities in preference order. -// Always returns at least one range - if no tokens touched, and empty range. -static llvm::SmallVector, 2> -pointBounds(unsigned Offset, const syntax::TokenBuffer &Tokens) { - const auto &SM = Tokens.sourceManager(); - SourceLocation Loc = SM.getComposedLoc(SM.getMainFileID(), Offset); - llvm::SmallVector, 2> Result; - // Prefer right token over left. - for (const syntax::Token &Tok : - llvm::reverse(spelledTokensTouching(Loc, Tokens))) { - if (shouldIgnore(Tok)) - continue; - unsigned Offset = Tokens.sourceManager().getFileOffset(Tok.location()); - Result.emplace_back(Offset, Offset + Tok.length()); - } - if (Result.empty()) - Result.emplace_back(Offset, Offset); - return Result; -} - -bool SelectionTree::createEach(ASTContext &AST, - const syntax::TokenBuffer &Tokens, - unsigned Begin, unsigned End, - llvm::function_ref Func) { - if (Begin != End) - return Func(SelectionTree(AST, Tokens, Begin, End)); - for (std::pair Bounds : pointBounds(Begin, Tokens)) - if (Func(SelectionTree(AST, Tokens, Bounds.first, Bounds.second))) - return true; - return false; -} - -SelectionTree SelectionTree::createRight(ASTContext &AST, - const syntax::TokenBuffer &Tokens, - unsigned int Begin, unsigned int End) { - llvm::Optional Result; - createEach(AST, Tokens, Begin, End, [&](SelectionTree T) { - Result = std::move(T); - return true; - }); - return std::move(*Result); +// Decide which selection emulates a "point" query in between characters. +static std::pair pointBounds(unsigned Offset, FileID FID, + ASTContext &AST) { + StringRef Buf = AST.getSourceManager().getBufferData(FID); + // Edge-cases where the choice is forced. + if (Buf.size() == 0) + return {0, 0}; + if (Offset == 0) + return {0, 1}; + if (Offset == Buf.size()) + return {Offset - 1, Offset}; + // We could choose either this byte or the previous. Usually we prefer the + // character on the right of the cursor (or under a block cursor). + // But if that's whitespace/semicolon, we likely want the token on the left. + auto IsIgnoredChar = [](char C) { return isWhitespace(C) || C == ';'; }; + if (IsIgnoredChar(Buf[Offset]) && !IsIgnoredChar(Buf[Offset - 1])) + return {Offset - 1, Offset}; + return {Offset, Offset + 1}; } SelectionTree::SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, @@ -705,6 +677,8 @@ SelectionTree::SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, // but that's all clangd has needed so far. const SourceManager &SM = AST.getSourceManager(); FileID FID = SM.getMainFileID(); + if (Begin == End) + std::tie(Begin, End) = pointBounds(Begin, FID, AST); PrintPolicy.TerseOutput = true; PrintPolicy.IncludeNewlines = false; @@ -716,6 +690,10 @@ SelectionTree::SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, dlog("Built selection tree\n{0}", *this); } +SelectionTree::SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, + unsigned Offset) + : SelectionTree(AST, Tokens, Offset, Offset) {} + const Node *SelectionTree::commonAncestor() const { const Node *Ancestor = Root; while (Ancestor->Children.size() == 1 && !Ancestor->Selected) diff --git a/clang-tools-extra/clangd/Selection.h b/clang-tools-extra/clangd/Selection.h index 36196f8..a7050c4 100644 --- a/clang-tools-extra/clangd/Selection.h +++ b/clang-tools-extra/clangd/Selection.h @@ -29,14 +29,6 @@ // - we determine which low-level nodes are partly or completely covered // by the selection. // - we expose a tree of the selected nodes and their lexical parents. -// -// Sadly LSP specifies locations as being between characters, and this causes -// some ambiguities we cannot cleanly resolve: -// lhs+rhs // targeting '+' or 'lhs'? -// ^ // in GUI editors, double-clicking 'lhs' yields this position! -// -// The best we can do in these cases is try both, which leads to the awkward -// SelectionTree::createEach() API. //===----------------------------------------------------------------------===// #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_SELECTION_H @@ -72,32 +64,16 @@ namespace clangd { // point back into the AST it was constructed with. class SelectionTree { public: - // Create selection trees for the given range, and pass them to Func. - // - // There may be multiple possible selection trees: - // - if the range is empty and borders two tokens, a tree for the right token - // and a tree for the left token will be yielded. - // - Func should return true on success (stop) and false on failure (continue) - // - // Always yields at least one tree. If no tokens are touched, it is empty. - static bool createEach(ASTContext &AST, const syntax::TokenBuffer &Tokens, - unsigned Begin, unsigned End, - llvm::function_ref Func); - - // Create a selection tree for the given range. - // - // Where ambiguous (range is empty and borders two tokens), prefer the token - // on the right. - static SelectionTree createRight(ASTContext &AST, - const syntax::TokenBuffer &Tokens, - unsigned Begin, unsigned End); - - // Copies are no good - contain pointers to other nodes. - SelectionTree(const SelectionTree &) = delete; - SelectionTree &operator=(const SelectionTree &) = delete; - // Moves are OK though - internal storage is pointer-stable when moved. - SelectionTree(SelectionTree &&) = default; - SelectionTree &operator=(SelectionTree &&) = default; + // Creates a selection tree at the given byte offset in the main file. + // This is approximately equivalent to a range of one character. + // (Usually, the character to the right of Offset, sometimes to the left). + SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, + unsigned Offset); + // Creates a selection tree for the given range in the main file. + // The range includes bytes [Start, End). + // If Start == End, uses the same heuristics as SelectionTree(AST, Start). + SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, + unsigned Start, unsigned End); // Describes to what extent an AST node is covered by the selection. enum Selection : unsigned char { @@ -145,11 +121,6 @@ public: const Node &root() const { return *Root; } private: - // Creates a selection tree for the given range in the main file. - // The range includes bytes [Start, End). - SelectionTree(ASTContext &AST, const syntax::TokenBuffer &Tokens, - unsigned Start, unsigned End); - std::deque Nodes; // Stable-pointer storage. const Node *Root; clang::PrintingPolicy PrintPolicy; diff --git a/clang-tools-extra/clangd/SemanticSelection.cpp b/clang-tools-extra/clangd/SemanticSelection.cpp index 49fc770..cbbf31f1 100644 --- a/clang-tools-extra/clangd/SemanticSelection.cpp +++ b/clang-tools-extra/clangd/SemanticSelection.cpp @@ -39,8 +39,7 @@ llvm::Expected> getSemanticRanges(ParsedAST &AST, } // Get node under the cursor. - SelectionTree ST = SelectionTree::createRight( - AST.getASTContext(), AST.getTokens(), *Offset, *Offset); + SelectionTree ST(AST.getASTContext(), AST.getTokens(), *Offset); for (const auto *Node = ST.commonAncestor(); Node != nullptr; Node = Node->Parent) { if (const Decl *D = Node->ASTNode.get()) { diff --git a/clang-tools-extra/clangd/XRefs.cpp b/clang-tools-extra/clangd/XRefs.cpp index 170637b..b16e708 100644 --- a/clang-tools-extra/clangd/XRefs.cpp +++ b/clang-tools-extra/clangd/XRefs.cpp @@ -131,16 +131,15 @@ SymbolLocation getPreferredLocation(const Location &ASTLoc, std::vector getDeclAtPosition(ParsedAST &AST, SourceLocation Pos, DeclRelationSet Relations) { - unsigned Offset = AST.getSourceManager().getDecomposedSpellingLoc(Pos).second; + FileID FID; + unsigned Offset; + std::tie(FID, Offset) = AST.getSourceManager().getDecomposedSpellingLoc(Pos); + SelectionTree Selection(AST.getASTContext(), AST.getTokens(), Offset); std::vector Result; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), Offset, - Offset, [&](SelectionTree ST) { - if (const SelectionTree::Node *N = - ST.commonAncestor()) - llvm::copy(targetDecl(N->ASTNode, Relations), - std::back_inserter(Result)); - return !Result.empty(); - }); + if (const SelectionTree::Node *N = Selection.commonAncestor()) { + auto Decls = targetDecl(N->ASTNode, Relations); + Result.assign(Decls.begin(), Decls.end()); + } return Result; } diff --git a/clang-tools-extra/clangd/refactor/Rename.cpp b/clang-tools-extra/clangd/refactor/Rename.cpp index 8653238..7d97ac8 100644 --- a/clang-tools-extra/clangd/refactor/Rename.cpp +++ b/clang-tools-extra/clangd/refactor/Rename.cpp @@ -80,8 +80,7 @@ llvm::DenseSet locateDeclAt(ParsedAST &AST, unsigned Offset = AST.getSourceManager().getDecomposedSpellingLoc(TokenStartLoc).second; - SelectionTree Selection = SelectionTree::createRight( - AST.getASTContext(), AST.getTokens(), Offset, Offset); + SelectionTree Selection(AST.getASTContext(), AST.getTokens(), Offset); const SelectionTree::Node *SelectedNode = Selection.commonAncestor(); if (!SelectedNode) return {}; diff --git a/clang-tools-extra/clangd/refactor/Tweak.cpp b/clang-tools-extra/clangd/refactor/Tweak.cpp index d62f20d..435c36e 100644 --- a/clang-tools-extra/clangd/refactor/Tweak.cpp +++ b/clang-tools-extra/clangd/refactor/Tweak.cpp @@ -46,17 +46,10 @@ void validateRegistry() { } // namespace Tweak::Selection::Selection(const SymbolIndex *Index, ParsedAST &AST, -<<<<<<< HEAD unsigned RangeBegin, unsigned RangeEnd) : Index(Index), AST(&AST), SelectionBegin(RangeBegin), SelectionEnd(RangeEnd), ASTSelection(AST.getASTContext(), AST.getTokens(), RangeBegin, RangeEnd) { -======= - unsigned RangeBegin, unsigned RangeEnd, - SelectionTree ASTSelection) - : Index(Index), AST(&AST), SelectionBegin(RangeBegin), - SelectionEnd(RangeEnd), ASTSelection(std::move(ASTSelection)) { ->>>>>>> [clangd] Make Tweak::Selection movable. NFC auto &SM = AST.getSourceManager(); Code = SM.getBufferData(SM.getMainFileID()); Cursor = SM.getComposedLoc(SM.getMainFileID(), RangeBegin); diff --git a/clang-tools-extra/clangd/refactor/Tweak.h b/clang-tools-extra/clangd/refactor/Tweak.h index e00a660..14f9ffc 100644 --- a/clang-tools-extra/clangd/refactor/Tweak.h +++ b/clang-tools-extra/clangd/refactor/Tweak.h @@ -48,7 +48,7 @@ public: /// Input to prepare and apply tweaks. struct Selection { Selection(const SymbolIndex *Index, ParsedAST &AST, unsigned RangeBegin, - unsigned RangeEnd, SelectionTree ASTSelection); + unsigned RangeEnd); /// The text of the active document. llvm::StringRef Code; /// The Index for handling codebase related queries. diff --git a/clang-tools-extra/clangd/unittests/FindTargetTests.cpp b/clang-tools-extra/clangd/unittests/FindTargetTests.cpp index 02dbd36..a815694 100644 --- a/clang-tools-extra/clangd/unittests/FindTargetTests.cpp +++ b/clang-tools-extra/clangd/unittests/FindTargetTests.cpp @@ -77,8 +77,8 @@ protected: auto AST = TU.build(); EXPECT_THAT(AST.getDiagnostics(), ::testing::IsEmpty()) << Code; llvm::Annotations::Range R = A.range(); - auto Selection = SelectionTree::createRight( - AST.getASTContext(), AST.getTokens(), R.Begin, R.End); + SelectionTree Selection(AST.getASTContext(), AST.getTokens(), R.Begin, + R.End); const SelectionTree::Node *N = Selection.commonAncestor(); if (!N) { ADD_FAILURE() << "No node selected!\n" << Code; diff --git a/clang-tools-extra/clangd/unittests/HoverTests.cpp b/clang-tools-extra/clangd/unittests/HoverTests.cpp index 52abc3e..783599a 100644 --- a/clang-tools-extra/clangd/unittests/HoverTests.cpp +++ b/clang-tools-extra/clangd/unittests/HoverTests.cpp @@ -568,7 +568,7 @@ TEST(Hover, NoHover) { } )cpp", R"cpp(// Template auto parameter. Nothing (Not useful). - template + template<^auto T> void func() { } void foo() { diff --git a/clang-tools-extra/clangd/unittests/SelectionTests.cpp b/clang-tools-extra/clangd/unittests/SelectionTests.cpp index 4af267b..9e1a90b 100644 --- a/clang-tools-extra/clangd/unittests/SelectionTests.cpp +++ b/clang-tools-extra/clangd/unittests/SelectionTests.cpp @@ -19,26 +19,20 @@ namespace clangd { namespace { using ::testing::UnorderedElementsAreArray; -// Create a selection tree corresponding to a point or pair of points. -// This uses the precisely-defined createRight semantics. The fuzzier -// createEach is tested separately. SelectionTree makeSelectionTree(const StringRef MarkedCode, ParsedAST &AST) { Annotations Test(MarkedCode); switch (Test.points().size()) { - case 1: { // Point selection. - unsigned Offset = cantFail(positionToOffset(Test.code(), Test.point())); - return SelectionTree::createRight(AST.getASTContext(), AST.getTokens(), - Offset, Offset); - } + case 1: // Point selection. + return SelectionTree(AST.getASTContext(), AST.getTokens(), + cantFail(positionToOffset(Test.code(), Test.point()))); case 2: // Range selection. - return SelectionTree::createRight( + return SelectionTree( AST.getASTContext(), AST.getTokens(), cantFail(positionToOffset(Test.code(), Test.points()[0])), cantFail(positionToOffset(Test.code(), Test.points()[1]))); default: ADD_FAILURE() << "Expected 1-2 points for selection.\n" << MarkedCode; - return SelectionTree::createRight(AST.getASTContext(), AST.getTokens(), 0u, - 0u); + return SelectionTree(AST.getASTContext(), AST.getTokens(), 0u, 0u); } } @@ -513,61 +507,6 @@ TEST(SelectionTest, Implicit) { EXPECT_EQ("CXXConstructExpr", nodeKind(&Str->outerImplicit())); } -TEST(SelectionTest, CreateAll) { - llvm::Annotations Test("int$unique^ a=1$ambiguous^+1; $empty^"); - auto AST = TestTU::withCode(Test.code()).build(); - unsigned Seen = 0; - SelectionTree::createEach( - AST.getASTContext(), AST.getTokens(), Test.point("ambiguous"), - Test.point("ambiguous"), [&](SelectionTree T) { - // Expect to see the right-biased tree first. - if (Seen == 0) - EXPECT_EQ("BinaryOperator", nodeKind(T.commonAncestor())); - else if (Seen == 1) - EXPECT_EQ("IntegerLiteral", nodeKind(T.commonAncestor())); - ++Seen; - return false; - }); - EXPECT_EQ(2u, Seen); - - Seen = 0; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), - Test.point("ambiguous"), Test.point("ambiguous"), - [&](SelectionTree T) { - ++Seen; - return true; - }); - EXPECT_EQ(1u, Seen) << "Return true --> stop iterating"; - - Seen = 0; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), - Test.point("unique"), Test.point("unique"), - [&](SelectionTree T) { - ++Seen; - return false; - }); - EXPECT_EQ(1u, Seen) << "no ambiguity --> only one tree"; - - Seen = 0; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), - Test.point("empty"), Test.point("empty"), - [&](SelectionTree T) { - EXPECT_FALSE(T.commonAncestor()); - ++Seen; - return false; - }); - EXPECT_EQ(1u, Seen) << "empty tree still created"; - - Seen = 0; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), - Test.point("unique"), Test.point("ambiguous"), - [&](SelectionTree T) { - ++Seen; - return false; - }); - EXPECT_EQ(1u, Seen) << "one tree for nontrivial selection"; -} - } // namespace } // namespace clangd } // namespace clang diff --git a/clang-tools-extra/clangd/unittests/TweakTesting.cpp b/clang-tools-extra/clangd/unittests/TweakTesting.cpp index 587c07d..7f9f75c 100644 --- a/clang-tools-extra/clangd/unittests/TweakTesting.cpp +++ b/clang-tools-extra/clangd/unittests/TweakTesting.cpp @@ -63,33 +63,12 @@ std::pair rangeOrPoint(const Annotations &A) { cantFail(positionToOffset(A.code(), SelectionRng.end))}; } -// Prepare and apply the specified tweak based on the selection in Input. -// Returns None if and only if prepare() failed. -llvm::Optional> -applyTweak(ParsedAST &AST, const Annotations &Input, StringRef TweakID, - const SymbolIndex *Index) { - auto Range = rangeOrPoint(Input); - llvm::Optional> Result; - SelectionTree::createEach(AST.getASTContext(), AST.getTokens(), Range.first, - Range.second, [&](SelectionTree ST) { - Tweak::Selection S(Index, AST, Range.first, - Range.second, std::move(ST)); - if (auto T = prepareTweak(TweakID, S)) { - Result = (*T)->apply(S); - return true; - } else { - llvm::consumeError(T.takeError()); - return false; - } - }); - return Result; -} - MATCHER_P7(TweakIsAvailable, TweakID, Ctx, Header, ExtraArgs, ExtraFiles, Index, FileName, (TweakID + (negation ? " is unavailable" : " is available")).str()) { std::string WrappedCode = wrap(Ctx, arg); Annotations Input(WrappedCode); + auto Selection = rangeOrPoint(Input); TestTU TU; TU.Filename = FileName; TU.HeaderCode = Header; @@ -97,11 +76,12 @@ MATCHER_P7(TweakIsAvailable, TweakID, Ctx, Header, ExtraArgs, ExtraFiles, Index, TU.ExtraArgs = ExtraArgs; TU.AdditionalFiles = std::move(ExtraFiles); ParsedAST AST = TU.build(); - auto Result = applyTweak(AST, Input, TweakID, Index); - // We only care if prepare() succeeded, but must handle Errors. - if (Result && !*Result) - consumeError(Result->takeError()); - return Result.hasValue(); + Tweak::Selection S(Index, AST, Selection.first, Selection.second); + auto PrepareResult = prepareTweak(TweakID, S); + if (PrepareResult) + return true; + llvm::consumeError(PrepareResult.takeError()); + return false; } } // namespace @@ -110,6 +90,8 @@ std::string TweakTest::apply(llvm::StringRef MarkedCode, llvm::StringMap *EditedFiles) const { std::string WrappedCode = wrap(Context, MarkedCode); Annotations Input(WrappedCode); + auto Selection = rangeOrPoint(Input); + TestTU TU; TU.Filename = FileName; TU.HeaderCode = Header; @@ -117,20 +99,23 @@ std::string TweakTest::apply(llvm::StringRef MarkedCode, TU.Code = Input.code(); TU.ExtraArgs = ExtraArgs; ParsedAST AST = TU.build(); + Tweak::Selection S(Index.get(), AST, Selection.first, Selection.second); - auto Result = applyTweak(AST, Input, TweakID, Index.get()); - if (!Result) + auto T = prepareTweak(TweakID, S); + if (!T) { + llvm::consumeError(T.takeError()); return "unavailable"; - if (!*Result) - return "fail: " + llvm::toString(Result->takeError()); - const auto &Effect = **Result; - if ((*Result)->ShowMessage) - return "message:\n" + *Effect.ShowMessage; - if (Effect.ApplyEdits.empty()) + } + llvm::Expected Result = (*T)->apply(S); + if (!Result) + return "fail: " + llvm::toString(Result.takeError()); + if (Result->ShowMessage) + return "message:\n" + *Result->ShowMessage; + if (Result->ApplyEdits.empty()) return "no effect"; std::string EditedMainFile; - for (auto &It : Effect.ApplyEdits) { + for (auto &It : Result->ApplyEdits) { auto NewText = It.second.apply(); if (!NewText) return "bad edits: " + llvm::toString(NewText.takeError()); diff --git a/clang-tools-extra/clangd/unittests/TweakTests.cpp b/clang-tools-extra/clangd/unittests/TweakTests.cpp index b6734b7..8627439 100644 --- a/clang-tools-extra/clangd/unittests/TweakTests.cpp +++ b/clang-tools-extra/clangd/unittests/TweakTests.cpp @@ -1971,7 +1971,7 @@ TEST_F(DefineOutlineTest, TriggersOnFunctionDecl) { // Basic check for function body and signature. EXPECT_AVAILABLE(R"cpp( class Bar { - [[void [[f^o^o^]]() [[{ return; }]]]] + [[void [[f^o^o]]() [[{ return; }]]]] }; void foo();