[clang-format] Wrap lines for C# property accessors
Summary: Ensure that auto-implemented properties `{ get; private set }` are wrapped on to one line for C# code. Reviewers: MyDeveloperDay, krasimir Reviewed By: MyDeveloperDay, krasimir Subscribers: cfe-commits Tags: #clang-format, #clang Differential Revision: https://reviews.llvm.org/D75006
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@ -292,6 +292,13 @@ private:
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}
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}
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// Try to merge a CSharp property declaration like `{ get; private set }`.
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if (Style.isCSharp()) {
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unsigned CSPA = tryMergeCSharpPropertyAccessor(I, E, Limit);
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if (CSPA > 0)
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return CSPA;
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}
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// Try to merge a function block with left brace unwrapped
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if (TheLine->Last->is(TT_FunctionLBrace) &&
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TheLine->First != TheLine->Last) {
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@ -421,6 +428,64 @@ private:
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return 0;
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}
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// true for lines of the form [access-modifier] {get,set} [;]
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bool isMergeablePropertyAccessor(const AnnotatedLine *Line) {
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auto *Tok = Line->First;
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if (!Tok)
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return false;
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if (Tok->isOneOf(tok::kw_public, tok::kw_protected, tok::kw_private,
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Keywords.kw_internal))
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Tok = Tok->Next;
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if (!Tok || (Tok->TokenText != "get" && Tok->TokenText != "set"))
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return false;
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if (!Tok->Next || Tok->Next->is(tok::semi))
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return true;
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return false;
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}
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unsigned tryMergeCSharpPropertyAccessor(
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SmallVectorImpl<AnnotatedLine *>::const_iterator I,
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SmallVectorImpl<AnnotatedLine *>::const_iterator E, unsigned /*Limit*/) {
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auto CurrentLine = I;
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// Does line start with `{`
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if (!(*CurrentLine)->Last || (*CurrentLine)->Last->isNot(TT_FunctionLBrace))
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return 0;
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++CurrentLine;
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unsigned MergedLines = 0;
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bool HasGetOrSet = false;
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while (CurrentLine != E) {
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bool LineIsGetOrSet = isMergeablePropertyAccessor(*CurrentLine);
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HasGetOrSet = HasGetOrSet || LineIsGetOrSet;
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if (LineIsGetOrSet) {
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++CurrentLine;
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++MergedLines;
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continue;
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}
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auto *Tok = (*CurrentLine)->First;
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if (Tok && Tok->is(tok::r_brace)) {
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++CurrentLine;
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++MergedLines;
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// See if the next line is a default value so that we can merge `{ get;
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// set } = 0`
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if (CurrentLine != E && (*CurrentLine)->First &&
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(*CurrentLine)->First->is(tok::equal)) {
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++MergedLines;
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}
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break;
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}
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// Not a '}' or a get/set line so do not merege lines.
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return 0;
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}
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return HasGetOrSet ? MergedLines : 0;
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}
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unsigned
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tryMergeSimplePPDirective(SmallVectorImpl<AnnotatedLine *>::const_iterator I,
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SmallVectorImpl<AnnotatedLine *>::const_iterator E,
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@ -240,18 +240,12 @@ TEST_F(FormatTestCSharp, Attributes) {
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verifyFormat("[TestMethod]\n"
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"public string Host\n"
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"{\n"
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" set;\n"
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" get;\n"
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"}");
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"{ set; get; }");
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verifyFormat("[TestMethod(\"start\", HelpText = \"Starts the server "
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"listening on provided host\")]\n"
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"public string Host\n"
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"{\n"
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" set;\n"
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" get;\n"
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"}");
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"{ set; get; }");
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verifyFormat(
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"[DllImport(\"Hello\", EntryPoint = \"hello_world\")]\n"
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@ -554,5 +548,32 @@ PrintOrderDetails(orderNum: 31, productName: "Red Mug", // comment
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Style);
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}
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TEST_F(FormatTestCSharp, CSharpPropertyAccessors) {
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FormatStyle Style = getGoogleStyle(FormatStyle::LK_CSharp);
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verifyFormat("int Value { get }", Style);
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verifyFormat("int Value { get; }", Style);
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verifyFormat("int Value { internal get; }", Style);
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verifyFormat("int Value { get; } = 0", Style);
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verifyFormat("int Value { set }", Style);
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verifyFormat("int Value { set; }", Style);
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verifyFormat("int Value { internal set; }", Style);
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verifyFormat("int Value { set; } = 0", Style);
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verifyFormat("int Value { get; set }", Style);
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verifyFormat("int Value { set; get }", Style);
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verifyFormat("int Value { get; private set; }", Style);
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verifyFormat("int Value { get; set; }", Style);
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verifyFormat("int Value { get; set; } = 0", Style);
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verifyFormat("int Value { internal get; internal set; }", Style);
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// Do not wrap expression body definitions.
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verifyFormat(R"(//
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public string Name {
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get => _name;
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set => _name = value;
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})",
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Style);
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}
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} // namespace format
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} // end namespace clang
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