From b5500b9ca0102f1ccaf32f0e77e96d0739aded9b Mon Sep 17 00:00:00 2001 From: pascal Date: Sat, 3 Sep 2016 22:46:54 +0000 Subject: Use the space freed up by sparc and zaurus to import LLVM. ok hackroom@ --- .../tools/clang/unittests/Format/FormatTest.cpp | 11119 +++++++++++++++++++ 1 file changed, 11119 insertions(+) create mode 100644 gnu/llvm/tools/clang/unittests/Format/FormatTest.cpp (limited to 'gnu/llvm/tools/clang/unittests/Format/FormatTest.cpp') diff --git a/gnu/llvm/tools/clang/unittests/Format/FormatTest.cpp b/gnu/llvm/tools/clang/unittests/Format/FormatTest.cpp new file mode 100644 index 00000000000..d9a16db74c8 --- /dev/null +++ b/gnu/llvm/tools/clang/unittests/Format/FormatTest.cpp @@ -0,0 +1,11119 @@ +//===- unittest/Format/FormatTest.cpp - Formatting unit tests -------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "FormatTestUtils.h" +#include "clang/Format/Format.h" +#include "llvm/Support/Debug.h" +#include "gtest/gtest.h" + +#define DEBUG_TYPE "format-test" + +namespace clang { +namespace format { +namespace { + +FormatStyle getGoogleStyle() { return getGoogleStyle(FormatStyle::LK_Cpp); } + +class FormatTest : public ::testing::Test { +protected: + enum IncompleteCheck { + IC_ExpectComplete, + IC_ExpectIncomplete, + IC_DoNotCheck + }; + + std::string format(llvm::StringRef Code, + const FormatStyle &Style = getLLVMStyle(), + IncompleteCheck CheckIncomplete = IC_ExpectComplete) { + DEBUG(llvm::errs() << "---\n"); + DEBUG(llvm::errs() << Code << "\n\n"); + std::vector Ranges(1, tooling::Range(0, Code.size())); + bool IncompleteFormat = false; + tooling::Replacements Replaces = + reformat(Style, Code, Ranges, "", &IncompleteFormat); + if (CheckIncomplete != IC_DoNotCheck) { + bool ExpectedIncompleteFormat = CheckIncomplete == IC_ExpectIncomplete; + EXPECT_EQ(ExpectedIncompleteFormat, IncompleteFormat) << Code << "\n\n"; + } + ReplacementCount = Replaces.size(); + std::string Result = applyAllReplacements(Code, Replaces); + EXPECT_NE("", Result); + DEBUG(llvm::errs() << "\n" << Result << "\n\n"); + return Result; + } + + FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) { + FormatStyle Style = getLLVMStyle(); + Style.ColumnLimit = ColumnLimit; + return Style; + } + + FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) { + FormatStyle Style = getGoogleStyle(); + Style.ColumnLimit = ColumnLimit; + return Style; + } + + void verifyFormat(llvm::StringRef Code, + const FormatStyle &Style = getLLVMStyle()) { + EXPECT_EQ(Code.str(), format(test::messUp(Code), Style)); + } + + void verifyIncompleteFormat(llvm::StringRef Code, + const FormatStyle &Style = getLLVMStyle()) { + EXPECT_EQ(Code.str(), + format(test::messUp(Code), Style, IC_ExpectIncomplete)); + } + + void verifyGoogleFormat(llvm::StringRef Code) { + verifyFormat(Code, getGoogleStyle()); + } + + void verifyIndependentOfContext(llvm::StringRef text) { + verifyFormat(text); + verifyFormat(llvm::Twine("void f() { " + text + " }").str()); + } + + /// \brief Verify that clang-format does not crash on the given input. + void verifyNoCrash(llvm::StringRef Code, + const FormatStyle &Style = getLLVMStyle()) { + format(Code, Style, IC_DoNotCheck); + } + + int ReplacementCount; +}; + +TEST_F(FormatTest, MessUp) { + EXPECT_EQ("1 2 3", test::messUp("1 2 3")); + EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n")); + EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc")); + EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc")); + EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne")); +} + +//===----------------------------------------------------------------------===// +// Basic function tests. +//===----------------------------------------------------------------------===// + +TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) { + EXPECT_EQ(";", format(";")); +} + +TEST_F(FormatTest, FormatsGlobalStatementsAt0) { + EXPECT_EQ("int i;", format(" int i;")); + EXPECT_EQ("\nint i;", format(" \n\t \v \f int i;")); + EXPECT_EQ("int i;\nint j;", format(" int i; int j;")); + EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;")); +} + +TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) { + EXPECT_EQ("int i;", format("int\ni;")); +} + +TEST_F(FormatTest, FormatsNestedBlockStatements) { + EXPECT_EQ("{\n {\n {}\n }\n}", format("{{{}}}")); +} + +TEST_F(FormatTest, FormatsNestedCall) { + verifyFormat("Method(f1, f2(f3));"); + verifyFormat("Method(f1(f2, f3()));"); + verifyFormat("Method(f1(f2, (f3())));"); +} + +TEST_F(FormatTest, NestedNameSpecifiers) { + verifyFormat("vector<::Type> v;"); + verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())"); + verifyFormat("static constexpr bool Bar = decltype(bar())::value;"); + verifyFormat("bool a = 2 < ::SomeFunction();"); +} + +TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) { + EXPECT_EQ("if (a) {\n" + " f();\n" + "}", + format("if(a){f();}")); + EXPECT_EQ(4, ReplacementCount); + EXPECT_EQ("if (a) {\n" + " f();\n" + "}", + format("if (a) {\n" + " f();\n" + "}")); + EXPECT_EQ(0, ReplacementCount); + EXPECT_EQ("/*\r\n" + "\r\n" + "*/\r\n", + format("/*\r\n" + "\r\n" + "*/\r\n")); + EXPECT_EQ(0, ReplacementCount); +} + +TEST_F(FormatTest, RemovesEmptyLines) { + EXPECT_EQ("class C {\n" + " int i;\n" + "};", + format("class C {\n" + " int i;\n" + "\n" + "};")); + + // Don't remove empty lines at the start of namespaces or extern "C" blocks. + EXPECT_EQ("namespace N {\n" + "\n" + "int i;\n" + "}", + format("namespace N {\n" + "\n" + "int i;\n" + "}", + getGoogleStyle())); + EXPECT_EQ("extern /**/ \"C\" /**/ {\n" + "\n" + "int i;\n" + "}", + format("extern /**/ \"C\" /**/ {\n" + "\n" + "int i;\n" + "}", + getGoogleStyle())); + + // ...but do keep inlining and removing empty lines for non-block extern "C" + // functions. + verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle()); + EXPECT_EQ("extern \"C\" int f() {\n" + " int i = 42;\n" + " return i;\n" + "}", + format("extern \"C\" int f() {\n" + "\n" + " int i = 42;\n" + " return i;\n" + "}", + getGoogleStyle())); + + // Remove empty lines at the beginning and end of blocks. + EXPECT_EQ("void f() {\n" + "\n" + " if (a) {\n" + "\n" + " f();\n" + " }\n" + "}", + format("void f() {\n" + "\n" + " if (a) {\n" + "\n" + " f();\n" + "\n" + " }\n" + "\n" + "}", + getLLVMStyle())); + EXPECT_EQ("void f() {\n" + " if (a) {\n" + " f();\n" + " }\n" + "}", + format("void f() {\n" + "\n" + " if (a) {\n" + "\n" + " f();\n" + "\n" + " }\n" + "\n" + "}", + getGoogleStyle())); + + // Don't remove empty lines in more complex control statements. + EXPECT_EQ("void f() {\n" + " if (a) {\n" + " f();\n" + "\n" + " } else if (b) {\n" + " f();\n" + " }\n" + "}", + format("void f() {\n" + " if (a) {\n" + " f();\n" + "\n" + " } else if (b) {\n" + " f();\n" + "\n" + " }\n" + "\n" + "}")); + + // FIXME: This is slightly inconsistent. + EXPECT_EQ("namespace {\n" + "int i;\n" + "}", + format("namespace {\n" + "int i;\n" + "\n" + "}")); + EXPECT_EQ("namespace {\n" + "int i;\n" + "\n" + "} // namespace", + format("namespace {\n" + "int i;\n" + "\n" + "} // namespace")); +} + +TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) { + verifyFormat("x = (a) and (b);"); + verifyFormat("x = (a) or (b);"); + verifyFormat("x = (a) bitand (b);"); + verifyFormat("x = (a) bitor (b);"); + verifyFormat("x = (a) not_eq (b);"); + verifyFormat("x = (a) and_eq (b);"); + verifyFormat("x = (a) or_eq (b);"); + verifyFormat("x = (a) xor (b);"); +} + +//===----------------------------------------------------------------------===// +// Tests for control statements. +//===----------------------------------------------------------------------===// + +TEST_F(FormatTest, FormatIfWithoutCompoundStatement) { + verifyFormat("if (true)\n f();\ng();"); + verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();"); + verifyFormat("if (a)\n if (b) {\n f();\n }\ng();"); + + FormatStyle AllowsMergedIf = getLLVMStyle(); + AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; + verifyFormat("if (a)\n" + " // comment\n" + " f();", + AllowsMergedIf); + verifyFormat("if (a)\n" + " ;", + AllowsMergedIf); + verifyFormat("if (a)\n" + " if (b) return;", + AllowsMergedIf); + + verifyFormat("if (a) // Can't merge this\n" + " f();\n", + AllowsMergedIf); + verifyFormat("if (a) /* still don't merge */\n" + " f();", + AllowsMergedIf); + verifyFormat("if (a) { // Never merge this\n" + " f();\n" + "}", + AllowsMergedIf); + verifyFormat("if (a) { /* Never merge this */\n" + " f();\n" + "}", + AllowsMergedIf); + + AllowsMergedIf.ColumnLimit = 14; + verifyFormat("if (a) return;", AllowsMergedIf); + verifyFormat("if (aaaaaaaaa)\n" + " return;", + AllowsMergedIf); + + AllowsMergedIf.ColumnLimit = 13; + verifyFormat("if (a)\n return;", AllowsMergedIf); +} + +TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) { + FormatStyle AllowsMergedLoops = getLLVMStyle(); + AllowsMergedLoops.AllowShortLoopsOnASingleLine = true; + verifyFormat("while (true) continue;", AllowsMergedLoops); + verifyFormat("for (;;) continue;", AllowsMergedLoops); + verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops); + verifyFormat("while (true)\n" + " ;", + AllowsMergedLoops); + verifyFormat("for (;;)\n" + " ;", + AllowsMergedLoops); + verifyFormat("for (;;)\n" + " for (;;) continue;", + AllowsMergedLoops); + verifyFormat("for (;;) // Can't merge this\n" + " continue;", + AllowsMergedLoops); + verifyFormat("for (;;) /* still don't merge */\n" + " continue;", + AllowsMergedLoops); +} + +TEST_F(FormatTest, FormatShortBracedStatements) { + FormatStyle AllowSimpleBracedStatements = getLLVMStyle(); + AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true; + + AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true; + AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true; + + verifyFormat("if (true) {}", AllowSimpleBracedStatements); + verifyFormat("while (true) {}", AllowSimpleBracedStatements); + verifyFormat("for (;;) {}", AllowSimpleBracedStatements); + verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements); + verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements); + verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements); + verifyFormat("if (true) { //\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + verifyFormat("if (true) {\n" + " f();\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + verifyFormat("if (true) {\n" + " f();\n" + "} else {\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + + verifyFormat("template struct A2 {\n" + " struct B {};\n" + "};", + AllowSimpleBracedStatements); + + AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false; + verifyFormat("if (true) {\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + verifyFormat("if (true) {\n" + " f();\n" + "} else {\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + + AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false; + verifyFormat("while (true) {\n" + " f();\n" + "}", + AllowSimpleBracedStatements); + verifyFormat("for (;;) {\n" + " f();\n" + "}", + AllowSimpleBracedStatements); +} + +TEST_F(FormatTest, ParseIfElse) { + verifyFormat("if (true)\n" + " if (true)\n" + " if (true)\n" + " f();\n" + " else\n" + " g();\n" + " else\n" + " h();\n" + "else\n" + " i();"); + verifyFormat("if (true)\n" + " if (true)\n" + " if (true) {\n" + " if (true)\n" + " f();\n" + " } else {\n" + " g();\n" + " }\n" + " else\n" + " h();\n" + "else {\n" + " i();\n" + "}"); + verifyFormat("void f() {\n" + " if (a) {\n" + " } else {\n" + " }\n" + "}"); +} + +TEST_F(FormatTest, ElseIf) { + verifyFormat("if (a) {\n} else if (b) {\n}"); + verifyFormat("if (a)\n" + " f();\n" + "else if (b)\n" + " g();\n" + "else\n" + " h();"); + verifyFormat("if (a) {\n" + " f();\n" + "}\n" + "// or else ..\n" + "else {\n" + " g()\n" + "}"); + + verifyFormat("if (a) {\n" + "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" + "}"); + verifyFormat("if (a) {\n" + "} else if (\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" + "}", + getLLVMStyleWithColumns(62)); +} + +TEST_F(FormatTest, FormatsForLoop) { + verifyFormat( + "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n" + " ++VeryVeryLongLoopVariable)\n" + " ;"); + verifyFormat("for (;;)\n" + " f();"); + verifyFormat("for (;;) {\n}"); + verifyFormat("for (;;) {\n" + " f();\n" + "}"); + verifyFormat("for (int i = 0; (i < 10); ++i) {\n}"); + + verifyFormat( + "for (std::vector::iterator I = UnwrappedLines.begin(),\n" + " E = UnwrappedLines.end();\n" + " I != E; ++I) {\n}"); + + verifyFormat( + "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n" + " ++IIIII) {\n}"); + verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n" + " aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}"); + verifyFormat("for (llvm::ArrayRef::iterator\n" + " I = FD->getDeclsInPrototypeScope().begin(),\n" + " E = FD->getDeclsInPrototypeScope().end();\n" + " I != E; ++I) {\n}"); + verifyFormat("for (SmallVectorImpl::iterator\n" + " I = Container.begin(),\n" + " E = Container.end();\n" + " I != E; ++I) {\n}", + getLLVMStyleWithColumns(76)); + + verifyFormat( + "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" + " ++aaaaaaaaaaa) {\n}"); + verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n" + " ++i) {\n}"); + verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n" + " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" + "}"); + verifyFormat("for (some_namespace::SomeIterator iter( // force break\n" + " aaaaaaaaaa);\n" + " iter; ++iter) {\n" + "}"); + verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbbbbbbb;\n" + " ++aaaaaaaaaaaaaaaaaaaaaaaaaaa) {"); + + FormatStyle NoBinPacking = getLLVMStyle(); + NoBinPacking.BinPackParameters = false; + verifyFormat("for (int aaaaaaaaaaa = 1;\n" + " aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa);\n" + " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" + "}", + NoBinPacking); + verifyFormat( + "for (std::vector::iterator I = UnwrappedLines.begin(),\n" + " E = UnwrappedLines.end();\n" + " I != E;\n" + " ++I) {\n}", + NoBinPacking); +} + +TEST_F(FormatTest, RangeBasedForLoops) { + verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); + verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}"); + verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); + verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}"); +} + +TEST_F(FormatTest, ForEachLoops) { + verifyFormat("void f() {\n" + " foreach (Item *item, itemlist) {}\n" + " Q_FOREACH (Item *item, itemlist) {}\n" + " BOOST_FOREACH (Item *item, itemlist) {}\n" + " UNKNOWN_FORACH(Item * item, itemlist) {}\n" + "}"); + + // As function-like macros. + verifyFormat("#define foreach(x, y)\n" + "#define Q_FOREACH(x, y)\n" + "#define BOOST_FOREACH(x, y)\n" + "#define UNKNOWN_FOREACH(x, y)\n"); + + // Not as function-like macros. + verifyFormat("#define foreach (x, y)\n" + "#define Q_FOREACH (x, y)\n" + "#define BOOST_FOREACH (x, y)\n" + "#define UNKNOWN_FOREACH (x, y)\n"); +} + +TEST_F(FormatTest, FormatsWhileLoop) { + verifyFormat("while (true) {\n}"); + verifyFormat("while (true)\n" + " f();"); + verifyFormat("while () {\n}"); + verifyFormat("while () {\n" + " f();\n" + "}"); +} + +TEST_F(FormatTest, FormatsDoWhile) { + verifyFormat("do {\n" + " do_something();\n" + "} while (something());"); + verifyFormat("do\n" + " do_something();\n" + "while (something());"); +} + +TEST_F(FormatTest, FormatsSwitchStatement) { + verifyFormat("switch (x) {\n" + "case 1:\n" + " f();\n" + " break;\n" + "case kFoo:\n" + "case ns::kBar:\n" + "case kBaz:\n" + " break;\n" + "default:\n" + " g();\n" + " break;\n" + "}"); + verifyFormat("switch (x) {\n" + "case 1: {\n" + " f();\n" + " break;\n" + "}\n" + "case 2: {\n" + " break;\n" + "}\n" + "}"); + verifyFormat("switch (x) {\n" + "case 1: {\n" + " f();\n" + " {\n" + " g();\n" + " h();\n" + " }\n" + " break;\n" + "}\n" + "}"); + verifyFormat("switch (x) {\n" + "case 1: {\n" + " f();\n" + " if (foo) {\n" + " g();\n" + " h();\n" + " }\n" + " break;\n" + "}\n" + "}"); + verifyFormat("switch (x) {\n" + "case 1: {\n" + " f();\n" + " g();\n" + "} break;\n" + "}"); + verifyFormat("switch (test)\n" + " ;"); + verifyFormat("switch (x) {\n" + "default: {\n" + " // Do nothing.\n" + "}\n" + "}"); + verifyFormat("switch (x) {\n" + "// comment\n" + "// if 1, do f()\n" + "case 1:\n" + " f();\n" + "}"); + verifyFormat("switch (x) {\n" + "case 1:\n" + " // Do amazing stuff\n" + " {\n" + " f();\n" + " g();\n" + " }\n" + " break;\n" + "}"); + verifyFormat("#define A \\\n" + " switch (x) { \\\n" + " case a: \\\n" + " foo = b; \\\n" + " }", + getLLVMStyleWithColumns(20)); + verifyFormat("#define OPERATION_CASE(name) \\\n" + " case OP_name: \\\n" + " return operations::Operation##name\n", + getLLVMStyleWithColumns(40)); + verifyFormat("switch (x) {\n" + "case 1:;\n" + "default:;\n" + " int i;\n" + "}"); + + verifyGoogleFormat("switch (x) {\n" + " case 1:\n" + " f();\n" + " break;\n" + " case kFoo:\n" + " case ns::kBar:\n" + " case kBaz:\n" + " break;\n" + " default:\n" + " g();\n" + " break;\n" + "}"); + verifyGoogleFormat("switch (x) {\n" + " case 1: {\n" + " f();\n" + " break;\n" + " }\n" + "}"); + verifyGoogleFormat("switch (test)\n" + " ;"); + + verifyGoogleFormat("#define OPERATION_CASE(name) \\\n" + " case OP_name: \\\n" + " return operations::Operation##name\n"); + verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n" + " // Get the correction operation class.\n" + " switch (OpCode) {\n" + " CASE(Add);\n" + " CASE(Subtract);\n" + " default:\n" + " return operations::Unknown;\n" + " }\n" + "#undef OPERATION_CASE\n" + "}"); + verifyFormat("DEBUG({\n" + " switch (x) {\n" + " case A:\n" + " f();\n" + " break;\n" + " // On B:\n" + " case B:\n" + " g();\n" + " break;\n" + " }\n" + "});"); + verifyFormat("switch (a) {\n" + "case (b):\n" + " return;\n" + "}"); + + verifyFormat("switch (a) {\n" + "case some_namespace::\n" + " some_constant:\n" + " return;\n" + "}", + getLLVMStyleWithColumns(34)); +} + +TEST_F(FormatTest, CaseRanges) { + verifyFormat("switch (x) {\n" + "case 'A' ... 'Z':\n" + "case 1 ... 5:\n" + " break;\n" + "}"); +} + +TEST_F(FormatTest, ShortCaseLabels) { + FormatStyle Style = getLLVMStyle(); + Style.AllowShortCaseLabelsOnASingleLine = true; + verifyFormat("switch (a) {\n" + "case 1: x = 1; break;\n" + "case 2: return;\n" + "case 3:\n" + "case 4:\n" + "case 5: return;\n" + "case 6: // comment\n" + " return;\n" + "case 7:\n" + " // comment\n" + " return;\n" + "case 8:\n" + " x = 8; // comment\n" + " break;\n" + "default: y = 1; break;\n" + "}", + Style); + verifyFormat("switch (a) {\n" + "#if FOO\n" + "case 0: return 0;\n" + "#endif\n" + "}", + Style); + verifyFormat("switch (a) {\n" + "case 1: {\n" + "}\n" + "case 2: {\n" + " return;\n" + "}\n" + "case 3: {\n" + " x = 1;\n" + " return;\n" + "}\n" + "case 4:\n" + " if (x)\n" + " return;\n" + "}", + Style); + Style.ColumnLimit = 21; + verifyFormat("switch (a) {\n" + "case 1: x = 1; break;\n" + "case 2: return;\n" + "case 3:\n" + "case 4:\n" + "case 5: return;\n" + "default:\n" + " y = 1;\n" + " break;\n" + "}", + Style); +} + +TEST_F(FormatTest, FormatsLabels) { + verifyFormat("void f() {\n" + " some_code();\n" + "test_label:\n" + " some_other_code();\n" + " {\n" + " some_more_code();\n" + " another_label:\n" + " some_more_code();\n" + " }\n" + "}"); + verifyFormat("{\n" + " some_code();\n" + "test_label:\n" + " some_other_code();\n" + "}"); + verifyFormat("{\n" + " some_code();\n" + "test_label:;\n" + " int i = 0;\n" + "}"); +} + +//===----------------------------------------------------------------------===// +// Tests for comments. +//===----------------------------------------------------------------------===// + +TEST_F(FormatTest, UnderstandsSingleLineComments) { + verifyFormat("//* */"); + verifyFormat("// line 1\n" + "// line 2\n" + "void f() {}\n"); + + verifyFormat("void f() {\n" + " // Doesn't do anything\n" + "}"); + verifyFormat("SomeObject\n" + " // Calling someFunction on SomeObject\n" + " .someFunction();"); + verifyFormat("auto result = SomeObject\n" + " // Calling someFunction on SomeObject\n" + " .someFunction();"); + verifyFormat("void f(int i, // some comment (probably for i)\n" + " int j, // some comment (probably for j)\n" + " int k); // some comment (probably for k)"); + verifyFormat("void f(int i,\n" + " // some comment (probably for j)\n" + " int j,\n" + " // some comment (probably for k)\n" + " int k);"); + + verifyFormat("int i // This is a fancy variable\n" + " = 5; // with nicely aligned comment."); + + verifyFormat("// Leading comment.\n" + "int a; // Trailing comment."); + verifyFormat("int a; // Trailing comment\n" + " // on 2\n" + " // or 3 lines.\n" + "int b;"); + verifyFormat("int a; // Trailing comment\n" + "\n" + "// Leading comment.\n" + "int b;"); + verifyFormat("int a; // Comment.\n" + " // More details.\n" + "int bbbb; // Another comment."); + verifyFormat( + "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n" + "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n" + "int cccccccccccccccccccccccccccccc; // comment\n" + "int ddd; // looooooooooooooooooooooooong comment\n" + "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n" + "int bbbbbbbbbbbbbbbbbbbbb; // comment\n" + "int ccccccccccccccccccc; // comment"); + + verifyFormat("#include \"a\" // comment\n" + "#include \"a/b/c\" // comment"); + verifyFormat("#include // comment\n" + "#include // comment"); + EXPECT_EQ("#include \"a\" // comment\n" + "#include \"a/b/c\" // comment", + format("#include \\\n" + " \"a\" // comment\n" + "#include \"a/b/c\" // comment")); + + verifyFormat("enum E {\n" + " // comment\n" + " VAL_A, // comment\n" + " VAL_B\n" + "};"); + + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " // Comment inside a statement.\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); + verifyFormat("SomeFunction(a,\n" + " // comment\n" + " b + x);"); + verifyFormat("SomeFunction(a, a,\n" + " // comment\n" + " b + x);"); + verifyFormat( + "bool aaaaaaaaaaaaa = // comment\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + + verifyFormat("int aaaa; // aaaaa\n" + "int aa; // aaaaaaa", + getLLVMStyleWithColumns(20)); + + EXPECT_EQ("void f() { // This does something ..\n" + "}\n" + "int a; // This is unrelated", + format("void f() { // This does something ..\n" + " }\n" + "int a; // This is unrelated")); + EXPECT_EQ("class C {\n" + " void f() { // This does something ..\n" + " } // awesome..\n" + "\n" + " int a; // This is unrelated\n" + "};", + format("class C{void f() { // This does something ..\n" + " } // awesome..\n" + " \n" + "int a; // This is unrelated\n" + "};")); + + EXPECT_EQ("int i; // single line trailing comment", + format("int i;\\\n// single line trailing comment")); + + verifyGoogleFormat("int a; // Trailing comment."); + + verifyFormat("someFunction(anotherFunction( // Force break.\n" + " parameter));"); + + verifyGoogleFormat("#endif // HEADER_GUARD"); + + verifyFormat("const char *test[] = {\n" + " // A\n" + " \"aaaa\",\n" + " // B\n" + " \"aaaaa\"};"); + verifyGoogleFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment"); + EXPECT_EQ("D(a, {\n" + " // test\n" + " int a;\n" + "});", + format("D(a, {\n" + "// test\n" + "int a;\n" + "});")); + + EXPECT_EQ("lineWith(); // comment\n" + "// at start\n" + "otherLine();", + format("lineWith(); // comment\n" + "// at start\n" + "otherLine();")); + EXPECT_EQ("lineWith(); // comment\n" + " // at start\n" + "otherLine();", + format("lineWith(); // comment\n" + " // at start\n" + "otherLine();")); + + EXPECT_EQ("lineWith(); // comment\n" + "// at start\n" + "otherLine(); // comment", + format("lineWith(); // comment\n" + "// at start\n" + "otherLine(); // comment")); + EXPECT_EQ("lineWith();\n" + "// at start\n" + "otherLine(); // comment", + format("lineWith();\n" + " // at start\n" + "otherLine(); // comment")); + EXPECT_EQ("// first\n" + "// at start\n" + "otherLine(); // comment", + format("// first\n" + " // at start\n" + "otherLine(); // comment")); + EXPECT_EQ("f();\n" + "// first\n" + "// at start\n" + "otherLine(); // comment", + format("f();\n" + "// first\n" + " // at start\n" + "otherLine(); // comment")); + verifyFormat("f(); // comment\n" + "// first\n" + "// at start\n" + "otherLine();"); + EXPECT_EQ("f(); // comment\n" + "// first\n" + "// at start\n" + "otherLine();", + format("f(); // comment\n" + "// first\n" + " // at start\n" + "otherLine();")); + EXPECT_EQ("f(); // comment\n" + " // first\n" + "// at start\n" + "otherLine();", + format("f(); // comment\n" + " // first\n" + "// at start\n" + "otherLine();")); + EXPECT_EQ("void f() {\n" + " lineWith(); // comment\n" + " // at start\n" + "}", + format("void f() {\n" + " lineWith(); // comment\n" + " // at start\n" + "}")); + EXPECT_EQ("int xy; // a\n" + "int z; // b", + format("int xy; // a\n" + "int z; //b")); + EXPECT_EQ("int xy; // a\n" + "int z; // bb", + format("int xy; // a\n" + "int z; //bb", + getLLVMStyleWithColumns(12))); + + verifyFormat("#define A \\\n" + " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" + " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", + getLLVMStyleWithColumns(60)); + verifyFormat( + "#define A \\\n" + " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" + " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", + getLLVMStyleWithColumns(61)); + + verifyFormat("if ( // This is some comment\n" + " x + 3) {\n" + "}"); + EXPECT_EQ("if ( // This is some comment\n" + " // spanning two lines\n" + " x + 3) {\n" + "}", + format("if( // This is some comment\n" + " // spanning two lines\n" + " x + 3) {\n" + "}")); + + verifyNoCrash("/\\\n/"); + verifyNoCrash("/\\\n* */"); + // The 0-character somehow makes the lexer return a proper comment. + verifyNoCrash(StringRef("/*\\\0\n/", 6)); +} + +TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) { + EXPECT_EQ("SomeFunction(a,\n" + " b, // comment\n" + " c);", + format("SomeFunction(a,\n" + " b, // comment\n" + " c);")); + EXPECT_EQ("SomeFunction(a, b,\n" + " // comment\n" + " c);", + format("SomeFunction(a,\n" + " b,\n" + " // comment\n" + " c);")); + EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n" + " c);", + format("SomeFunction(a, b, // comment (unclear relation)\n" + " c);")); + EXPECT_EQ("SomeFunction(a, // comment\n" + " b,\n" + " c); // comment", + format("SomeFunction(a, // comment\n" + " b,\n" + " c); // comment")); +} + +TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) { + EXPECT_EQ("// comment", format("// comment ")); + EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment", + format("int aaaaaaa, bbbbbbb; // comment ", + getLLVMStyleWithColumns(33))); + EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f ")); + EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f ")); +} + +TEST_F(FormatTest, UnderstandsBlockComments) { + verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);"); + verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }"); + EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb);", + format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n" + "/* Trailing comment for aa... */\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb);")); + EXPECT_EQ( + "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);", + format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n" + "/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);")); + EXPECT_EQ( + "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" + "}", + format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaa ,\n" + " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" + "}")); + + FormatStyle NoBinPacking = getLLVMStyle(); + NoBinPacking.BinPackParameters = false; + verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n" + " /* parameter 2 */ aaaaaa,\n" + " /* parameter 3 */ aaaaaa,\n" + " /* parameter 4 */ aaaaaa);", + NoBinPacking); + + // Aligning block comments in macros. + verifyGoogleFormat("#define A \\\n" + " int i; /*a*/ \\\n" + " int jjj; /*b*/"); +} + +TEST_F(FormatTest, AlignsBlockComments) { + EXPECT_EQ("/*\n" + " * Really multi-line\n" + " * comment.\n" + " */\n" + "void f() {}", + format(" /*\n" + " * Really multi-line\n" + " * comment.\n" + " */\n" + " void f() {}")); + EXPECT_EQ("class C {\n" + " /*\n" + " * Another multi-line\n" + " * comment.\n" + " */\n" + " void f() {}\n" + "};", + format("class C {\n" + "/*\n" + " * Another multi-line\n" + " * comment.\n" + " */\n" + "void f() {}\n" + "};")); + EXPECT_EQ("/*\n" + " 1. This is a comment with non-trivial formatting.\n" + " 1.1. We have to indent/outdent all lines equally\n" + " 1.1.1. to keep the formatting.\n" + " */", + format(" /*\n" + " 1. This is a comment with non-trivial formatting.\n" + " 1.1. We have to indent/outdent all lines equally\n" + " 1.1.1. to keep the formatting.\n" + " */")); + EXPECT_EQ("/*\n" + "Don't try to outdent if there's not enough indentation.\n" + "*/", + format(" /*\n" + " Don't try to outdent if there's not enough indentation.\n" + " */")); + + EXPECT_EQ("int i; /* Comment with empty...\n" + " *\n" + " * line. */", + format("int i; /* Comment with empty...\n" + " *\n" + " * line. */")); + EXPECT_EQ("int foobar = 0; /* comment */\n" + "int bar = 0; /* multiline\n" + " comment 1 */\n" + "int baz = 0; /* multiline\n" + " comment 2 */\n" + "int bzz = 0; /* multiline\n" + " comment 3 */", + format("int foobar = 0; /* comment */\n" + "int bar = 0; /* multiline\n" + " comment 1 */\n" + "int baz = 0; /* multiline\n" + " comment 2 */\n" + "int bzz = 0; /* multiline\n" + " comment 3 */")); + EXPECT_EQ("int foobar = 0; /* comment */\n" + "int bar = 0; /* multiline\n" + " comment */\n" + "int baz = 0; /* multiline\n" + "comment */", + format("int foobar = 0; /* comment */\n" + "int bar = 0; /* multiline\n" + "comment */\n" + "int baz = 0; /* multiline\n" + "comment */")); +} + +TEST_F(FormatTest, CommentReflowingCanBeTurnedOff) { + FormatStyle Style = getLLVMStyleWithColumns(20); + Style.ReflowComments = false; + verifyFormat("// aaaaaaaaa aaaaaaaaaa aaaaaaaaaa", Style); + verifyFormat("/* aaaaaaaaa aaaaaaaaaa aaaaaaaaaa */", Style); +} + +TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) { + EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */", + format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */")); + EXPECT_EQ( + "void ffffffffffff(\n" + " int aaaaaaaa, int bbbbbbbb,\n" + " int cccccccccccc) { /*\n" + " aaaaaaaaaa\n" + " aaaaaaaaaaaaa\n" + " bbbbbbbbbbbbbb\n" + " bbbbbbbbbb\n" + " */\n" + "}", + format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n" + "{ /*\n" + " aaaaaaaaaa aaaaaaaaaaaaa\n" + " bbbbbbbbbbbbbb bbbbbbbbbb\n" + " */\n" + "}", + getLLVMStyleWithColumns(40))); +} + +TEST_F(FormatTest, DontBreakNonTrailingBlockComments) { + EXPECT_EQ("void ffffffffff(\n" + " int aaaaa /* test */);", + format("void ffffffffff(int aaaaa /* test */);", + getLLVMStyleWithColumns(35))); +} + +TEST_F(FormatTest, SplitsLongCxxComments) { + EXPECT_EQ("// A comment that\n" + "// doesn't fit on\n" + "// one line", + format("// A comment that doesn't fit on one line", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/// A comment that\n" + "/// doesn't fit on\n" + "/// one line", + format("/// A comment that doesn't fit on one line", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("//! A comment that\n" + "//! doesn't fit on\n" + "//! one line", + format("//! A comment that doesn't fit on one line", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("// a b c d\n" + "// e f g\n" + "// h i j k", + format("// a b c d e f g h i j k", getLLVMStyleWithColumns(10))); + EXPECT_EQ( + "// a b c d\n" + "// e f g\n" + "// h i j k", + format("\\\n// a b c d e f g h i j k", getLLVMStyleWithColumns(10))); + EXPECT_EQ("if (true) // A comment that\n" + " // doesn't fit on\n" + " // one line", + format("if (true) // A comment that doesn't fit on one line ", + getLLVMStyleWithColumns(30))); + EXPECT_EQ("// Don't_touch_leading_whitespace", + format("// Don't_touch_leading_whitespace", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("// Add leading\n" + "// whitespace", + format("//Add leading whitespace", getLLVMStyleWithColumns(20))); + EXPECT_EQ("/// Add leading\n" + "/// whitespace", + format("///Add leading whitespace", getLLVMStyleWithColumns(20))); + EXPECT_EQ("//! Add leading\n" + "//! whitespace", + format("//!Add leading whitespace", getLLVMStyleWithColumns(20))); + EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle())); + EXPECT_EQ("// Even if it makes the line exceed the column\n" + "// limit", + format("//Even if it makes the line exceed the column limit", + getLLVMStyleWithColumns(51))); + EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle())); + + EXPECT_EQ("// aa bb cc dd", + format("// aa bb cc dd ", + getLLVMStyleWithColumns(15))); + + EXPECT_EQ("// A comment before\n" + "// a macro\n" + "// definition\n" + "#define a b", + format("// A comment before a macro definition\n" + "#define a b", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("void ffffff(\n" + " int aaaaaaaaa, // wwww\n" + " int bbbbbbbbbb, // xxxxxxx\n" + " // yyyyyyyyyy\n" + " int c, int d, int e) {}", + format("void ffffff(\n" + " int aaaaaaaaa, // wwww\n" + " int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n" + " int c, int d, int e) {}", + getLLVMStyleWithColumns(40))); + EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + getLLVMStyleWithColumns(20))); + EXPECT_EQ( + "#define XXX // a b c d\n" + " // e f g h", + format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22))); + EXPECT_EQ( + "#define XXX // q w e r\n" + " // t y u i", + format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22))); +} + +TEST_F(FormatTest, PreservesHangingIndentInCxxComments) { + EXPECT_EQ("// A comment\n" + "// that doesn't\n" + "// fit on one\n" + "// line", + format("// A comment that doesn't fit on one line", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/// A comment\n" + "/// that doesn't\n" + "/// fit on one\n" + "/// line", + format("/// A comment that doesn't fit on one line", + getLLVMStyleWithColumns(20))); +} + +TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) { + EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" + "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" + "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" + "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" + "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")); + EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", + format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", + getLLVMStyleWithColumns(50))); + // FIXME: One day we might want to implement adjustment of leading whitespace + // of the consecutive lines in this kind of comment: + EXPECT_EQ("double\n" + " a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", + format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" + " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", + getLLVMStyleWithColumns(49))); +} + +TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) { + FormatStyle Pragmas = getLLVMStyleWithColumns(30); + Pragmas.CommentPragmas = "^ IWYU pragma:"; + EXPECT_EQ( + "// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", + format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas)); + EXPECT_EQ( + "/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", + format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas)); +} + +TEST_F(FormatTest, PriorityOfCommentBreaking) { + EXPECT_EQ("if (xxx ==\n" + " yyy && // aaaaaaaaaaaa bbbbbbbbb\n" + " zzz)\n" + " q();", + format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n" + " zzz) q();", + getLLVMStyleWithColumns(40))); + EXPECT_EQ("if (xxxxxxxxxx ==\n" + " yyy && // aaaaaa bbbbbbbb cccc\n" + " zzz)\n" + " q();", + format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n" + " zzz) q();", + getLLVMStyleWithColumns(40))); + EXPECT_EQ("if (xxxxxxxxxx &&\n" + " yyy || // aaaaaa bbbbbbbb cccc\n" + " zzz)\n" + " q();", + format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n" + " zzz) q();", + getLLVMStyleWithColumns(40))); + EXPECT_EQ("fffffffff(\n" + " &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" + " zzz);", + format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" + " zzz);", + getLLVMStyleWithColumns(40))); +} + +TEST_F(FormatTest, MultiLineCommentsInDefines) { + EXPECT_EQ("#define A(x) /* \\\n" + " a comment \\\n" + " inside */ \\\n" + " f();", + format("#define A(x) /* \\\n" + " a comment \\\n" + " inside */ \\\n" + " f();", + getLLVMStyleWithColumns(17))); + EXPECT_EQ("#define A( \\\n" + " x) /* \\\n" + " a comment \\\n" + " inside */ \\\n" + " f();", + format("#define A( \\\n" + " x) /* \\\n" + " a comment \\\n" + " inside */ \\\n" + " f();", + getLLVMStyleWithColumns(17))); +} + +TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) { + EXPECT_EQ("namespace {}\n// Test\n#define A", + format("namespace {}\n // Test\n#define A")); + EXPECT_EQ("namespace {}\n/* Test */\n#define A", + format("namespace {}\n /* Test */\n#define A")); + EXPECT_EQ("namespace {}\n/* Test */ #define A", + format("namespace {}\n /* Test */ #define A")); +} + +TEST_F(FormatTest, SplitsLongLinesInComments) { + EXPECT_EQ("/* This is a long\n" + " * comment that\n" + " * doesn't\n" + " * fit on one line.\n" + " */", + format("/* " + "This is a long " + "comment that " + "doesn't " + "fit on one line. */", + getLLVMStyleWithColumns(20))); + EXPECT_EQ( + "/* a b c d\n" + " * e f g\n" + " * h i j k\n" + " */", + format("/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10))); + EXPECT_EQ( + "/* a b c d\n" + " * e f g\n" + " * h i j k\n" + " */", + format("\\\n/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10))); + EXPECT_EQ("/*\n" + "This is a long\n" + "comment that doesn't\n" + "fit on one line.\n" + "*/", + format("/*\n" + "This is a long " + "comment that doesn't " + "fit on one line. \n" + "*/", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/*\n" + " * This is a long\n" + " * comment that\n" + " * doesn't fit on\n" + " * one line.\n" + " */", + format("/* \n" + " * This is a long " + " comment that " + " doesn't fit on " + " one line. \n" + " */", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/*\n" + " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n" + " * so_it_should_be_broken\n" + " * wherever_a_space_occurs\n" + " */", + format("/*\n" + " * This_is_a_comment_with_words_that_dont_fit_on_one_line " + " so_it_should_be_broken " + " wherever_a_space_occurs \n" + " */", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/*\n" + " * This_comment_can_not_be_broken_into_lines\n" + " */", + format("/*\n" + " * This_comment_can_not_be_broken_into_lines\n" + " */", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("{\n" + " /*\n" + " This is another\n" + " long comment that\n" + " doesn't fit on one\n" + " line 1234567890\n" + " */\n" + "}", + format("{\n" + "/*\n" + "This is another " + " long comment that " + " doesn't fit on one" + " line 1234567890\n" + "*/\n" + "}", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("{\n" + " /*\n" + " * This i s\n" + " * another comment\n" + " * t hat doesn' t\n" + " * fit on one l i\n" + " * n e\n" + " */\n" + "}", + format("{\n" + "/*\n" + " * This i s" + " another comment" + " t hat doesn' t" + " fit on one l i" + " n e\n" + " */\n" + "}", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("/*\n" + " * This is a long\n" + " * comment that\n" + " * doesn't fit on\n" + " * one line\n" + " */", + format(" /*\n" + " * This is a long comment that doesn't fit on one line\n" + " */", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("{\n" + " if (something) /* This is a\n" + " long\n" + " comment */\n" + " ;\n" + "}", + format("{\n" + " if (something) /* This is a long comment */\n" + " ;\n" + "}", + getLLVMStyleWithColumns(30))); + + EXPECT_EQ("/* A comment before\n" + " * a macro\n" + " * definition */\n" + "#define a b", + format("/* A comment before a macro definition */\n" + "#define a b", + getLLVMStyleWithColumns(20))); + + EXPECT_EQ("/* some comment\n" + " * a comment\n" + "* that we break\n" + " * another comment\n" + "* we have to break\n" + "* a left comment\n" + " */", + format(" /* some comment\n" + " * a comment that we break\n" + " * another comment we have to break\n" + "* a left comment\n" + " */", + getLLVMStyleWithColumns(20))); + + EXPECT_EQ("/**\n" + " * multiline block\n" + " * comment\n" + " *\n" + " */", + format("/**\n" + " * multiline block comment\n" + " *\n" + " */", + getLLVMStyleWithColumns(20))); + + EXPECT_EQ("/*\n" + "\n" + "\n" + " */\n", + format(" /* \n" + " \n" + " \n" + " */\n")); + + EXPECT_EQ("/* a a */", + format("/* a a */", getLLVMStyleWithColumns(15))); + EXPECT_EQ("/* a a bc */", + format("/* a a bc */", getLLVMStyleWithColumns(15))); + EXPECT_EQ("/* aaa aaa\n" + " * aaaaa */", + format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); + EXPECT_EQ("/* aaa aaa\n" + " * aaaaa */", + format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); +} + +TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) { + EXPECT_EQ("#define X \\\n" + " /* \\\n" + " Test \\\n" + " Macro comment \\\n" + " with a long \\\n" + " line \\\n" + " */ \\\n" + " A + B", + format("#define X \\\n" + " /*\n" + " Test\n" + " Macro comment with a long line\n" + " */ \\\n" + " A + B", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("#define X \\\n" + " /* Macro comment \\\n" + " with a long \\\n" + " line */ \\\n" + " A + B", + format("#define X \\\n" + " /* Macro comment with a long\n" + " line */ \\\n" + " A + B", + getLLVMStyleWithColumns(20))); + EXPECT_EQ("#define X \\\n" + " /* Macro comment \\\n" + " * with a long \\\n" + " * line */ \\\n" + " A + B", + format("#define X \\\n" + " /* Macro comment with a long line */ \\\n" + " A + B", + getLLVMStyleWithColumns(20))); +} + +TEST_F(FormatTest, CommentsInStaticInitializers) { + EXPECT_EQ( + "static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n" + " aaaaaaaaaaaaaaaaaaaa /* comment */,\n" + " /* comment */ aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaa, // comment\n" + " aaaaaaaaaaaaaaaaaaaa};", + format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n" + " aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n" + " /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n" + " aaaaaaaaaaaaaaaaaaaa , // comment\n" + " aaaaaaaaaaaaaaaaaaaa };")); + verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" + " bbbbbbbbbbb, ccccccccccc};"); + verifyFormat("static SomeType type = {aaaaaaaaaaa,\n" + " // comment for bb....\n" + " bbbbbbbbbbb, ccccccccccc};"); + verifyGoogleFormat( + "static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" + " bbbbbbbbbbb, ccccccccccc};"); + verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n" + " // comment for bb....\n" + " bbbbbbbbbbb, ccccccccccc};"); + + verifyFormat("S s = {{a, b, c}, // Group #1\n" + " {d, e, f}, // Group #2\n" + " {g, h, i}}; // Group #3"); + verifyFormat("S s = {{// Group #1\n" + " a, b, c},\n" + " {// Group #2\n" + " d, e, f},\n" + " {// Group #3\n" + " g, h, i}};"); + + EXPECT_EQ("S s = {\n" + " // Some comment\n" + " a,\n" + "\n" + " // Comment after empty line\n" + " b}", + format("S s = {\n" + " // Some comment\n" + " a,\n" + " \n" + " // Comment after empty line\n" + " b\n" + "}")); + EXPECT_EQ("S s = {\n" + " /* Some comment */\n" + " a,\n" + "\n" + " /* Comment after empty line */\n" + " b}", + format("S s = {\n" + " /* Some comment */\n" + " a,\n" + " \n" + " /* Comment after empty line */\n" + " b\n" + "}")); + verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n" + " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" + " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" + " 0x00, 0x00, 0x00, 0x00}; // comment\n"); +} + +TEST_F(FormatTest, IgnoresIf0Contents) { + EXPECT_EQ("#if 0\n" + "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" + "#endif\n" + "void f() {}", + format("#if 0\n" + "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" + "#endif\n" + "void f( ) { }")); + EXPECT_EQ("#if false\n" + "void f( ) { }\n" + "#endif\n" + "void g() {}\n", + format("#if false\n" + "void f( ) { }\n" + "#endif\n" + "void g( ) { }\n")); + EXPECT_EQ("enum E {\n" + " One,\n" + " Two,\n" + "#if 0\n" + "Three,\n" + " Four,\n" + "#endif\n" + " Five\n" + "};", + format("enum E {\n" + " One,Two,\n" + "#if 0\n" + "Three,\n" + " Four,\n" + "#endif\n" + " Five};")); + EXPECT_EQ("enum F {\n" + " One,\n" + "#if 1\n" + " Two,\n" + "#if 0\n" + "Three,\n" + " Four,\n" + "#endif\n" + " Five\n" + "#endif\n" + "};", + format("enum F {\n" + "One,\n" + "#if 1\n" + "Two,\n" + "#if 0\n" + "Three,\n" + " Four,\n" + "#endif\n" + "Five\n" + "#endif\n" + "};")); + EXPECT_EQ("enum G {\n" + " One,\n" + "#if 0\n" + "Two,\n" + "#else\n" + " Three,\n" + "#endif\n" + " Four\n" + "};", + format("enum G {\n" + "One,\n" + "#if 0\n" + "Two,\n" + "#else\n" + "Three,\n" + "#endif\n" + "Four\n" + "};")); + EXPECT_EQ("enum H {\n" + " One,\n" + "#if 0\n" + "#ifdef Q\n" + "Two,\n" + "#else\n" + "Three,\n" + "#endif\n" + "#endif\n" + " Four\n" + "};", + format("enum H {\n" + "One,\n" + "#if 0\n" + "#ifdef Q\n" + "Two,\n" + "#else\n" + "Three,\n" + "#endif\n" + "#endif\n" + "Four\n" + "};")); + EXPECT_EQ("enum I {\n" + " One,\n" + "#if /* test */ 0 || 1\n" + "Two,\n" + "Three,\n" + "#endif\n" + " Four\n" + "};", + format("enum I {\n" + "One,\n" + "#if /* test */ 0 || 1\n" + "Two,\n" + "Three,\n" + "#endif\n" + "Four\n" + "};")); + EXPECT_EQ("enum J {\n" + " One,\n" + "#if 0\n" + "#if 0\n" + "Two,\n" + "#else\n" + "Three,\n" + "#endif\n" + "Four,\n" + "#endif\n" + " Five\n" + "};", + format("enum J {\n" + "One,\n" + "#if 0\n" + "#if 0\n" + "Two,\n" + "#else\n" + "Three,\n" + "#endif\n" + "Four,\n" + "#endif\n" + "Five\n" + "};")); +} + +//===----------------------------------------------------------------------===// +// Tests for classes, namespaces, etc. +//===----------------------------------------------------------------------===// + +TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) { + verifyFormat("class A {};"); +} + +TEST_F(FormatTest, UnderstandsAccessSpecifiers) { + verifyFormat("class A {\n" + "public:\n" + "public: // comment\n" + "protected:\n" + "private:\n" + " void f() {}\n" + "};"); + verifyGoogleFormat("class A {\n" + " public:\n" + " protected:\n" + " private:\n" + " void f() {}\n" + "};"); + verifyFormat("class A {\n" + "public slots:\n" + " void f1() {}\n" + "public Q_SLOTS:\n" + " void f2() {}\n" + "protected slots:\n" + " void f3() {}\n" + "protected Q_SLOTS:\n" + " void f4() {}\n" + "private slots:\n" + " void f5() {}\n" + "private Q_SLOTS:\n" + " void f6() {}\n" + "signals:\n" + " void g1();\n" + "Q_SIGNALS:\n" + " void g2();\n" + "};"); + + // Don't interpret 'signals' the wrong way. + verifyFormat("signals.set();"); + verifyFormat("for (Signals signals : f()) {\n}"); + verifyFormat("{\n" + " signals.set(); // This needs indentation.\n" + "}"); +} + +TEST_F(FormatTest, SeparatesLogicalBlocks) { + EXPECT_EQ("class A {\n" + "public:\n" + " void f();\n" + "\n" + "private:\n" + " void g() {}\n" + " // test\n" + "protected:\n" + " int h;\n" + "};", + format("class A {\n" + "public:\n" + "void f();\n" + "private:\n" + "void g() {}\n" + "// test\n" + "protected:\n" + "int h;\n" + "};")); + EXPECT_EQ("class A {\n" + "protected:\n" + "public:\n" + " void f();\n" + "};", + format("class A {\n" + "protected:\n" + "\n" + "public:\n" + "\n" + " void f();\n" + "};")); + + // Even ensure proper spacing inside macros. + EXPECT_EQ("#define B \\\n" + " class A { \\\n" + " protected: \\\n" + " public: \\\n" + " void f(); \\\n" + " };", + format("#define B \\\n" + " class A { \\\n" + " protected: \\\n" + " \\\n" + " public: \\\n" + " \\\n" + " void f(); \\\n" + " };", + getGoogleStyle())); + // But don't remove empty lines after macros ending in access specifiers. + EXPECT_EQ("#define A private:\n" + "\n" + "int i;", + format("#define A private:\n" + "\n" + "int i;")); +} + +TEST_F(FormatTest, FormatsClasses) { + verifyFormat("class A : public B {};"); + verifyFormat("class A : public ::B {};"); + + verifyFormat( + "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" + " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); + verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n" + " : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" + " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); + verifyFormat( + "class A : public B, public C, public D, public E, public F {};"); + verifyFormat("class AAAAAAAAAAAA : public B,\n" + " public C,\n" + " public D,\n" + " public E,\n" + " public F,\n" + " public G {};"); + + verifyFormat("class\n" + " ReallyReallyLongClassName {\n" + " int i;\n" + "};", + getLLVMStyleWithColumns(32)); + verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n" + " aaaaaaaaaaaaaaaa> {};"); + verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n" + " : public aaaaaaaaaaaaaaaaaaa {};"); + verifyFormat("template \n" + "struct Aaaaaaaaaaaaaaaaa\n" + " : Aaaaaaaaaaaaaaaaa {};"); + verifyFormat("class ::A::B {};"); +} + +TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) { + verifyFormat("class A {\n} a, b;"); + verifyFormat("struct A {\n} a, b;"); + verifyFormat("union A {\n} a;"); +} + +TEST_F(FormatTest, FormatsEnum) { + verifyFormat("enum {\n" + " Zero,\n" + " One = 1,\n" + " Two = One + 1,\n" + " Three = (One + Two),\n" + " Four = (Zero && (One ^ Two)) | (One << Two),\n" + " Five = (One, Two, Three, Four, 5)\n" + "};"); + verifyGoogleFormat("enum {\n" + " Zero,\n" + " One = 1,\n" + " Two = One + 1,\n" + " Three = (One + Two),\n" + " Four = (Zero && (One ^ Two)) | (One << Two),\n" + " Five = (One, Two, Three, Four, 5)\n" + "};"); + verifyFormat("enum Enum {};"); + verifyFormat("enum {};"); + verifyFormat("enum X E {} d;"); + verifyFormat("enum __attribute__((...)) E {} d;"); + verifyFormat("enum __declspec__((...)) E {} d;"); + verifyFormat("enum {\n" + " Bar = Foo::value\n" + "};", + getLLVMStyleWithColumns(30)); + + verifyFormat("enum ShortEnum { A, B, C };"); + verifyGoogleFormat("enum ShortEnum { A, B, C };"); + + EXPECT_EQ("enum KeepEmptyLines {\n" + " ONE,\n" + "\n" + " TWO,\n" + "\n" + " THREE\n" + "}", + format("enum KeepEmptyLines {\n" + " ONE,\n" + "\n" + " TWO,\n" + "\n" + "\n" + " THREE\n" + "}")); + verifyFormat("enum E { // comment\n" + " ONE,\n" + " TWO\n" + "};\n" + "int i;"); + // Not enums. + verifyFormat("enum X f() {\n" + " a();\n" + " return 42;\n" + "}"); + verifyFormat("enum X Type::f() {\n" + " a();\n" + " return 42;\n" + "}"); + verifyFormat("enum ::X f() {\n" + " a();\n" + " return 42;\n" + "}"); + verifyFormat("enum ns::X f() {\n" + " a();\n" + " return 42;\n" + "}"); +} + +TEST_F(FormatTest, FormatsEnumsWithErrors) { + verifyFormat("enum Type {\n" + " One = 0; // These semicolons should be commas.\n" + " Two = 1;\n" + "};"); + verifyFormat("namespace n {\n" + "enum Type {\n" + " One,\n" + " Two, // missing };\n" + " int i;\n" + "}\n" + "void g() {}"); +} + +TEST_F(FormatTest, FormatsEnumStruct) { + verifyFormat("enum struct {\n" + " Zero,\n" + " One = 1,\n" + " Two = One + 1,\n" + " Three = (One + Two),\n" + " Four = (Zero && (One ^ Two)) | (One << Two),\n" + " Five = (One, Two, Three, Four, 5)\n" + "};"); + verifyFormat("enum struct Enum {};"); + verifyFormat("enum struct {};"); + verifyFormat("enum struct X E {} d;"); + verifyFormat("enum struct __attribute__((...)) E {} d;"); + verifyFormat("enum struct __declspec__((...)) E {} d;"); + verifyFormat("enum struct X f() {\n a();\n return 42;\n}"); +} + +TEST_F(FormatTest, FormatsEnumClass) { + verifyFormat("enum class {\n" + " Zero,\n" + " One = 1,\n" + " Two = One + 1,\n" + " Three = (One + Two),\n" + " Four = (Zero && (One ^ Two)) | (One << Two),\n" + " Five = (One, Two, Three, Four, 5)\n" + "};"); + verifyFormat("enum class Enum {};"); + verifyFormat("enum class {};"); + verifyFormat("enum class X E {} d;"); + verifyFormat("enum class __attribute__((...)) E {} d;"); + verifyFormat("enum class __declspec__((...)) E {} d;"); + verifyFormat("enum class X f() {\n a();\n return 42;\n}"); +} + +TEST_F(FormatTest, FormatsEnumTypes) { + verifyFormat("enum X : int {\n" + " A, // Force multiple lines.\n" + " B\n" + "};"); + verifyFormat("enum X : int { A, B };"); + verifyFormat("enum X : std::uint32_t { A, B };"); +} + +TEST_F(FormatTest, FormatsNSEnums) { + verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }"); + verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n" + " // Information about someDecentlyLongValue.\n" + " someDecentlyLongValue,\n" + " // Information about anotherDecentlyLongValue.\n" + " anotherDecentlyLongValue,\n" + " // Information about aThirdDecentlyLongValue.\n" + " aThirdDecentlyLongValue\n" + "};"); + verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n" + " a = 1,\n" + " b = 2,\n" + " c = 3,\n" + "};"); + verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n" + " a = 1,\n" + " b = 2,\n" + " c = 3,\n" + "};"); + verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n" + " a = 1,\n" + " b = 2,\n" + " c = 3,\n" + "};"); +} + +TEST_F(FormatTest, FormatsBitfields) { + verifyFormat("struct Bitfields {\n" + " unsigned sClass : 8;\n" + " unsigned ValueKind : 2;\n" + "};"); + verifyFormat("struct A {\n" + " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb;\n" + "};"); + verifyFormat("struct MyStruct {\n" + " uchar data;\n" + " uchar : 8;\n" + " uchar : 8;\n" + " uchar other;\n" + "};"); +} + +TEST_F(FormatTest, FormatsNamespaces) { + verifyFormat("namespace some_namespace {\n" + "class A {};\n" + "void f() { f(); }\n" + "}"); + verifyFormat("namespace {\n" + "class A {};\n" + "void f() { f(); }\n" + "}"); + verifyFormat("inline namespace X {\n" + "class A {};\n" + "void f() { f(); }\n" + "}"); + verifyFormat("using namespace some_namespace;\n" + "class A {};\n" + "void f() { f(); }"); + + // This code is more common than we thought; if we + // layout this correctly the semicolon will go into + // its own line, which is undesirable. + verifyFormat("namespace {};"); + verifyFormat("namespace {\n" + "class A {};\n" + "};"); + + verifyFormat("namespace {\n" + "int SomeVariable = 0; // comment\n" + "} // namespace"); + EXPECT_EQ("#ifndef HEADER_GUARD\n" + "#define HEADER_GUARD\n" + "namespace my_namespace {\n" + "int i;\n" + "} // my_namespace\n" + "#endif // HEADER_GUARD", + format("#ifndef HEADER_GUARD\n" + " #define HEADER_GUARD\n" + " namespace my_namespace {\n" + "int i;\n" + "} // my_namespace\n" + "#endif // HEADER_GUARD")); + + EXPECT_EQ("namespace A::B {\n" + "class C {};\n" + "}", + format("namespace A::B {\n" + "class C {};\n" + "}")); + + FormatStyle Style = getLLVMStyle(); + Style.NamespaceIndentation = FormatStyle::NI_All; + EXPECT_EQ("namespace out {\n" + " int i;\n" + " namespace in {\n" + " int i;\n" + " } // namespace\n" + "} // namespace", + format("namespace out {\n" + "int i;\n" + "namespace in {\n" + "int i;\n" + "} // namespace\n" + "} // namespace", + Style)); + + Style.NamespaceIndentation = FormatStyle::NI_Inner; + EXPECT_EQ("namespace out {\n" + "int i;\n" + "namespace in {\n" + " int i;\n" + "} // namespace\n" + "} // namespace", + format("namespace out {\n" + "int i;\n" + "namespace in {\n" + "int i;\n" + "} // namespace\n" + "} // namespace", + Style)); +} + +TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); } + +TEST_F(FormatTest, FormatsInlineASM) { + verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));"); + verifyFormat("asm(\"nop\" ::: \"memory\");"); + verifyFormat( + "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n" + " \"cpuid\\n\\t\"\n" + " \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n" + " : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n" + " : \"a\"(value));"); + EXPECT_EQ( + "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" + " __asm {\n" + " mov edx,[that] // vtable in edx\n" + " mov eax,methodIndex\n" + " call [edx][eax*4] // stdcall\n" + " }\n" + "}", + format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" + " __asm {\n" + " mov edx,[that] // vtable in edx\n" + " mov eax,methodIndex\n" + " call [edx][eax*4] // stdcall\n" + " }\n" + "}")); + EXPECT_EQ("_asm {\n" + " xor eax, eax;\n" + " cpuid;\n" + "}", + format("_asm {\n" + " xor eax, eax;\n" + " cpuid;\n" + "}")); + verifyFormat("void function() {\n" + " // comment\n" + " asm(\"\");\n" + "}"); + EXPECT_EQ("__asm {\n" + "}\n" + "int i;", + format("__asm {\n" + "}\n" + "int i;")); +} + +TEST_F(FormatTest, FormatTryCatch) { + verifyFormat("try {\n" + " throw a * b;\n" + "} catch (int a) {\n" + " // Do nothing.\n" + "} catch (...) {\n" + " exit(42);\n" + "}"); + + // Function-level try statements. + verifyFormat("int f() try { return 4; } catch (...) {\n" + " return 5;\n" + "}"); + verifyFormat("class A {\n" + " int a;\n" + " A() try : a(0) {\n" + " } catch (...) {\n" + " throw;\n" + " }\n" + "};\n"); + + // Incomplete try-catch blocks. + verifyIncompleteFormat("try {} catch ("); +} + +TEST_F(FormatTest, FormatSEHTryCatch) { + verifyFormat("__try {\n" + " int a = b * c;\n" + "} __except (EXCEPTION_EXECUTE_HANDLER) {\n" + " // Do nothing.\n" + "}"); + + verifyFormat("__try {\n" + " int a = b * c;\n" + "} __finally {\n" + " // Do nothing.\n" + "}"); + + verifyFormat("DEBUG({\n" + " __try {\n" + " } __finally {\n" + " }\n" + "});\n"); +} + +TEST_F(FormatTest, IncompleteTryCatchBlocks) { + verifyFormat("try {\n" + " f();\n" + "} catch {\n" + " g();\n" + "}"); + verifyFormat("try {\n" + " f();\n" + "} catch (A a) MACRO(x) {\n" + " g();\n" + "} catch (B b) MACRO(x) {\n" + " g();\n" + "}"); +} + +TEST_F(FormatTest, FormatTryCatchBraceStyles) { + FormatStyle Style = getLLVMStyle(); + for (auto BraceStyle : {FormatStyle::BS_Attach, FormatStyle::BS_Mozilla, + FormatStyle::BS_WebKit}) { + Style.BreakBeforeBraces = BraceStyle; + verifyFormat("try {\n" + " // something\n" + "} catch (...) {\n" + " // something\n" + "}", + Style); + } + Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; + verifyFormat("try {\n" + " // something\n" + "}\n" + "catch (...) {\n" + " // something\n" + "}", + Style); + verifyFormat("__try {\n" + " // something\n" + "}\n" + "__finally {\n" + " // something\n" + "}", + Style); + verifyFormat("@try {\n" + " // something\n" + "}\n" + "@finally {\n" + " // something\n" + "}", + Style); + Style.BreakBeforeBraces = FormatStyle::BS_Allman; + verifyFormat("try\n" + "{\n" + " // something\n" + "}\n" + "catch (...)\n" + "{\n" + " // something\n" + "}", + Style); + Style.BreakBeforeBraces = FormatStyle::BS_GNU; + verifyFormat("try\n" + " {\n" + " // something\n" + " }\n" + "catch (...)\n" + " {\n" + " // something\n" + " }", + Style); + Style.BreakBeforeBraces = FormatStyle::BS_Custom; + Style.BraceWrapping.BeforeCatch = true; + verifyFormat("try {\n" + " // something\n" + "}\n" + "catch (...) {\n" + " // something\n" + "}", + Style); +} + +TEST_F(FormatTest, FormatObjCTryCatch) { + verifyFormat("@try {\n" + " f();\n" + "} @catch (NSException e) {\n" + " @throw;\n" + "} @finally {\n" + " exit(42);\n" + "}"); + verifyFormat("DEBUG({\n" + " @try {\n" + " } @finally {\n" + " }\n" + "});\n"); +} + +TEST_F(FormatTest, FormatObjCAutoreleasepool) { + FormatStyle Style = getLLVMStyle(); + verifyFormat("@autoreleasepool {\n" + " f();\n" + "}\n" + "@autoreleasepool {\n" + " f();\n" + "}\n", + Style); + Style.BreakBeforeBraces = FormatStyle::BS_Allman; + verifyFormat("@autoreleasepool\n" + "{\n" + " f();\n" + "}\n" + "@autoreleasepool\n" + "{\n" + " f();\n" + "}\n", + Style); +} + +TEST_F(FormatTest, StaticInitializers) { + verifyFormat("static SomeClass SC = {1, 'a'};"); + + verifyFormat("static SomeClass WithALoooooooooooooooooooongName = {\n" + " 100000000, " + "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};"); + + // Here, everything other than the "}" would fit on a line. + verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n" + " 10000000000000000000000000};"); + EXPECT_EQ("S s = {a,\n" + "\n" + " b};", + format("S s = {\n" + " a,\n" + "\n" + " b\n" + "};")); + + // FIXME: This would fit into the column limit if we'd fit "{ {" on the first + // line. However, the formatting looks a bit off and this probably doesn't + // happen often in practice. + verifyFormat("static int Variable[1] = {\n" + " {1000000000000000000000000000000000000}};", + getLLVMStyleWithColumns(40)); +} + +TEST_F(FormatTest, DesignatedInitializers) { + verifyFormat("const struct A a = {.a = 1, .b = 2};"); + verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n" + " .bbbbbbbbbb = 2,\n" + " .cccccccccc = 3,\n" + " .dddddddddd = 4,\n" + " .eeeeeeeeee = 5};"); + verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n" + " .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n" + " .ccccccccccccccccccccccccccc = 3,\n" + " .ddddddddddddddddddddddddddd = 4,\n" + " .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};"); + + verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};"); +} + +TEST_F(FormatTest, NestedStaticInitializers) { + verifyFormat("static A x = {{{}}};\n"); + verifyFormat("static A x = {{{init1, init2, init3, init4},\n" + " {init1, init2, init3, init4}}};", + getLLVMStyleWithColumns(50)); + + verifyFormat("somes Status::global_reps[3] = {\n" + " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" + " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" + " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};", + getLLVMStyleWithColumns(60)); + verifyGoogleFormat("SomeType Status::global_reps[3] = {\n" + " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" + " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" + " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};"); + verifyFormat("CGRect cg_rect = {{rect.fLeft, rect.fTop},\n" + " {rect.fRight - rect.fLeft, rect.fBottom - " + "rect.fTop}};"); + + verifyFormat( + "SomeArrayOfSomeType a = {\n" + " {{1, 2, 3},\n" + " {1, 2, 3},\n" + " {111111111111111111111111111111, 222222222222222222222222222222,\n" + " 333333333333333333333333333333},\n" + " {1, 2, 3},\n" + " {1, 2, 3}}};"); + verifyFormat( + "SomeArrayOfSomeType a = {\n" + " {{1, 2, 3}},\n" + " {{1, 2, 3}},\n" + " {{111111111111111111111111111111, 222222222222222222222222222222,\n" + " 333333333333333333333333333333}},\n" + " {{1, 2, 3}},\n" + " {{1, 2, 3}}};"); + + verifyFormat("struct {\n" + " unsigned bit;\n" + " const char *const name;\n" + "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n" + " {kOsWin, \"Windows\"},\n" + " {kOsLinux, \"Linux\"},\n" + " {kOsCrOS, \"Chrome OS\"}};"); + verifyFormat("struct {\n" + " unsigned bit;\n" + " const char *const name;\n" + "} kBitsToOs[] = {\n" + " {kOsMac, \"Mac\"},\n" + " {kOsWin, \"Windows\"},\n" + " {kOsLinux, \"Linux\"},\n" + " {kOsCrOS, \"Chrome OS\"},\n" + "};"); +} + +TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) { + verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro(" + " \\\n" + " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)"); +} + +TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) { + verifyFormat("virtual void write(ELFWriter *writerrr,\n" + " OwningPtr &buffer) = 0;"); + + // Do break defaulted and deleted functions. + verifyFormat("virtual void ~Deeeeeeeestructor() =\n" + " default;", + getLLVMStyleWithColumns(40)); + verifyFormat("virtual void ~Deeeeeeeestructor() =\n" + " delete;", + getLLVMStyleWithColumns(40)); +} + +TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) { + verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3", + getLLVMStyleWithColumns(40)); + verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", + getLLVMStyleWithColumns(40)); + EXPECT_EQ("#define Q \\\n" + " \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n" + " \"aaaaaaaa.cpp\"", + format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", + getLLVMStyleWithColumns(40))); +} + +TEST_F(FormatTest, UnderstandsLinePPDirective) { + EXPECT_EQ("# 123 \"A string literal\"", + format(" # 123 \"A string literal\"")); +} + +TEST_F(FormatTest, LayoutUnknownPPDirective) { + EXPECT_EQ("#;", format("#;")); + verifyFormat("#\n;\n;\n;"); +} + +TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) { + EXPECT_EQ("#line 42 \"test\"\n", + format("# \\\n line \\\n 42 \\\n \"test\"\n")); + EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n", + getLLVMStyleWithColumns(12))); +} + +TEST_F(FormatTest, EndOfFileEndsPPDirective) { + EXPECT_EQ("#line 42 \"test\"", + format("# \\\n line \\\n 42 \\\n \"test\"")); + EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B")); +} + +TEST_F(FormatTest, DoesntRemoveUnknownTokens) { + verifyFormat("#define A \\x20"); + verifyFormat("#define A \\ x20"); + EXPECT_EQ("#define A \\ x20", format("#define A \\ x20")); + verifyFormat("#define A ''"); + verifyFormat("#define A ''qqq"); + verifyFormat("#define A `qqq"); + verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");"); + EXPECT_EQ("const char *c = STRINGIFY(\n" + "\\na : b);", + format("const char * c = STRINGIFY(\n" + "\\na : b);")); + + verifyFormat("a\r\\"); + verifyFormat("a\v\\"); + verifyFormat("a\f\\"); +} + +TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) { + verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13)); + verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12)); + verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12)); + // FIXME: We never break before the macro name. + verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12)); + + verifyFormat("#define A A\n#define A A"); + verifyFormat("#define A(X) A\n#define A A"); + + verifyFormat("#define Something Other", getLLVMStyleWithColumns(23)); + verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22)); +} + +TEST_F(FormatTest, HandlePreprocessorDirectiveContext) { + EXPECT_EQ("// somecomment\n" + "#include \"a.h\"\n" + "#define A( \\\n" + " A, B)\n" + "#include \"b.h\"\n" + "// somecomment\n", + format(" // somecomment\n" + " #include \"a.h\"\n" + "#define A(A,\\\n" + " B)\n" + " #include \"b.h\"\n" + " // somecomment\n", + getLLVMStyleWithColumns(13))); +} + +TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); } + +TEST_F(FormatTest, LayoutCodeInMacroDefinitions) { + EXPECT_EQ("#define A \\\n" + " c; \\\n" + " e;\n" + "f;", + format("#define A c; e;\n" + "f;", + getLLVMStyleWithColumns(14))); +} + +TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); } + +TEST_F(FormatTest, MacroDefinitionInsideStatement) { + EXPECT_EQ("int x,\n" + "#define A\n" + " y;", + format("int x,\n#define A\ny;")); +} + +TEST_F(FormatTest, HashInMacroDefinition) { + EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle())); + verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11)); + verifyFormat("#define A \\\n" + " { \\\n" + " f(#c); \\\n" + " }", + getLLVMStyleWithColumns(11)); + + verifyFormat("#define A(X) \\\n" + " void function##X()", + getLLVMStyleWithColumns(22)); + + verifyFormat("#define A(a, b, c) \\\n" + " void a##b##c()", + getLLVMStyleWithColumns(22)); + + verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22)); +} + +TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) { + EXPECT_EQ("#define A (x)", format("#define A (x)")); + EXPECT_EQ("#define A(x)", format("#define A(x)")); +} + +TEST_F(FormatTest, EmptyLinesInMacroDefinitions) { + EXPECT_EQ("#define A b;", format("#define A \\\n" + " \\\n" + " b;", + getLLVMStyleWithColumns(25))); + EXPECT_EQ("#define A \\\n" + " \\\n" + " a; \\\n" + " b;", + format("#define A \\\n" + " \\\n" + " a; \\\n" + " b;", + getLLVMStyleWithColumns(11))); + EXPECT_EQ("#define A \\\n" + " a; \\\n" + " \\\n" + " b;", + format("#define A \\\n" + " a; \\\n" + " \\\n" + " b;", + getLLVMStyleWithColumns(11))); +} + +TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) { + verifyIncompleteFormat("#define A :"); + verifyFormat("#define SOMECASES \\\n" + " case 1: \\\n" + " case 2\n", + getLLVMStyleWithColumns(20)); + verifyFormat("#define A template "); + verifyIncompleteFormat("#define STR(x) #x\n" + "f(STR(this_is_a_string_literal{));"); + verifyFormat("#pragma omp threadprivate( \\\n" + " y)), // expected-warning", + getLLVMStyleWithColumns(28)); + verifyFormat("#d, = };"); + verifyFormat("#if \"a"); + verifyIncompleteFormat("({\n" + "#define b \\\n" + " } \\\n" + " a\n" + "a", + getLLVMStyleWithColumns(15)); + verifyFormat("#define A \\\n" + " { \\\n" + " {\n" + "#define B \\\n" + " } \\\n" + " }", + getLLVMStyleWithColumns(15)); + verifyNoCrash("#if a\na(\n#else\n#endif\n{a"); + verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}"); + verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};"); + verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() { \n)}"); +} + +TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) { + verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline. + EXPECT_EQ("class A : public QObject {\n" + " Q_OBJECT\n" + "\n" + " A() {}\n" + "};", + format("class A : public QObject {\n" + " Q_OBJECT\n" + "\n" + " A() {\n}\n" + "} ;")); + EXPECT_EQ("MACRO\n" + "/*static*/ int i;", + format("MACRO\n" + " /*static*/ int i;")); + EXPECT_EQ("SOME_MACRO\n" + "namespace {\n" + "void f();\n" + "}", + format("SOME_MACRO\n" + " namespace {\n" + "void f( );\n" + "}")); + // Only if the identifier contains at least 5 characters. + EXPECT_EQ("HTTP f();", format("HTTP\nf();")); + EXPECT_EQ("MACRO\nf();", format("MACRO\nf();")); + // Only if everything is upper case. + EXPECT_EQ("class A : public QObject {\n" + " Q_Object A() {}\n" + "};", + format("class A : public QObject {\n" + " Q_Object\n" + " A() {\n}\n" + "} ;")); + + // Only if the next line can actually start an unwrapped line. + EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;", + format("SOME_WEIRD_LOG_MACRO\n" + "<< SomeThing;")); + + verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), " + "(n, buffers))\n", + getChromiumStyle(FormatStyle::LK_Cpp)); +} + +TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) { + EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" + "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" + "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" + "class X {};\n" + "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" + "int *createScopDetectionPass() { return 0; }", + format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" + " INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" + " INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" + " class X {};\n" + " INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" + " int *createScopDetectionPass() { return 0; }")); + // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as + // braces, so that inner block is indented one level more. + EXPECT_EQ("int q() {\n" + " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" + " IPC_MESSAGE_HANDLER(xxx, qqq)\n" + " IPC_END_MESSAGE_MAP()\n" + "}", + format("int q() {\n" + " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" + " IPC_MESSAGE_HANDLER(xxx, qqq)\n" + " IPC_END_MESSAGE_MAP()\n" + "}")); + + // Same inside macros. + EXPECT_EQ("#define LIST(L) \\\n" + " L(A) \\\n" + " L(B) \\\n" + " L(C)", + format("#define LIST(L) \\\n" + " L(A) \\\n" + " L(B) \\\n" + " L(C)", + getGoogleStyle())); + + // These must not be recognized as macros. + EXPECT_EQ("int q() {\n" + " f(x);\n" + " f(x) {}\n" + " f(x)->g();\n" + " f(x)->*g();\n" + " f(x).g();\n" + " f(x) = x;\n" + " f(x) += x;\n" + " f(x) -= x;\n" + " f(x) *= x;\n" + " f(x) /= x;\n" + " f(x) %= x;\n" + " f(x) &= x;\n" + " f(x) |= x;\n" + " f(x) ^= x;\n" + " f(x) >>= x;\n" + " f(x) <<= x;\n" + " f(x)[y].z();\n" + " LOG(INFO) << x;\n" + " ifstream(x) >> x;\n" + "}\n", + format("int q() {\n" + " f(x)\n;\n" + " f(x)\n {}\n" + " f(x)\n->g();\n" + " f(x)\n->*g();\n" + " f(x)\n.g();\n" + " f(x)\n = x;\n" + " f(x)\n += x;\n" + " f(x)\n -= x;\n" + " f(x)\n *= x;\n" + " f(x)\n /= x;\n" + " f(x)\n %= x;\n" + " f(x)\n &= x;\n" + " f(x)\n |= x;\n" + " f(x)\n ^= x;\n" + " f(x)\n >>= x;\n" + " f(x)\n <<= x;\n" + " f(x)\n[y].z();\n" + " LOG(INFO)\n << x;\n" + " ifstream(x)\n >> x;\n" + "}\n")); + EXPECT_EQ("int q() {\n" + " F(x)\n" + " if (1) {\n" + " }\n" + " F(x)\n" + " while (1) {\n" + " }\n" + " F(x)\n" + " G(x);\n" + " F(x)\n" + " try {\n" + " Q();\n" + " } catch (...) {\n" + " }\n" + "}\n", + format("int q() {\n" + "F(x)\n" + "if (1) {}\n" + "F(x)\n" + "while (1) {}\n" + "F(x)\n" + "G(x);\n" + "F(x)\n" + "try { Q(); } catch (...) {}\n" + "}\n")); + EXPECT_EQ("class A {\n" + " A() : t(0) {}\n" + " A(int i) noexcept() : {}\n" + " A(X x)\n" // FIXME: function-level try blocks are broken. + " try : t(0) {\n" + " } catch (...) {\n" + " }\n" + "};", + format("class A {\n" + " A()\n : t(0) {}\n" + " A(int i)\n noexcept() : {}\n" + " A(X x)\n" + " try : t(0) {} catch (...) {}\n" + "};")); + EXPECT_EQ("class SomeClass {\n" + "public:\n" + " SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n" + "};", + format("class SomeClass {\n" + "public:\n" + " SomeClass()\n" + " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" + "};")); + EXPECT_EQ("class SomeClass {\n" + "public:\n" + " SomeClass()\n" + " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" + "};", + format("class SomeClass {\n" + "public:\n" + " SomeClass()\n" + " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" + "};", + getLLVMStyleWithColumns(40))); + + verifyFormat("MACRO(>)"); +} + +TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) { + verifyFormat("#define A \\\n" + " f({ \\\n" + " g(); \\\n" + " });", + getLLVMStyleWithColumns(11)); +} + +TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) { + EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}")); +} + +TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) { + verifyFormat("{\n { a #c; }\n}"); +} + +TEST_F(FormatTest, FormatUnbalancedStructuralElements) { + EXPECT_EQ("#define A \\\n { \\\n {\nint i;", + format("#define A { {\nint i;", getLLVMStyleWithColumns(11))); + EXPECT_EQ("#define A \\\n } \\\n }\nint i;", + format("#define A } }\nint i;", getLLVMStyleWithColumns(11))); +} + +TEST_F(FormatTest, EscapedNewlines) { + EXPECT_EQ( + "#define A \\\n int i; \\\n int j;", + format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11))); + EXPECT_EQ("#define A\n\nint i;", format("#define A \\\n\n int i;")); + EXPECT_EQ("template f();", format("\\\ntemplate f();")); + EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/")); + EXPECT_EQ("", format("")); +} + +TEST_F(FormatTest, DontCrashOnBlockComments) { + EXPECT_EQ( + "int xxxxxxxxx; /* " + "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n" + "zzzzzz\n" + "0*/", + format("int xxxxxxxxx; /* " + "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n" + "0*/")); +} + +TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) { + verifyFormat("#define A \\\n" + " int v( \\\n" + " a); \\\n" + " int i;", + getLLVMStyleWithColumns(11)); +} + +TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) { + EXPECT_EQ( + "#define ALooooooooooooooooooooooooooooooooooooooongMacro(" + " \\\n" + " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" + "\n" + "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" + " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n", + format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro(" + "\\\n" + "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" + " \n" + " AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" + " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n")); +} + +TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) { + EXPECT_EQ("int\n" + "#define A\n" + " a;", + format("int\n#define A\na;")); + verifyFormat("functionCallTo(\n" + " someOtherFunction(\n" + " withSomeParameters, whichInSequence,\n" + " areLongerThanALine(andAnotherCall,\n" + "#define A B\n" + " withMoreParamters,\n" + " whichStronglyInfluenceTheLayout),\n" + " andMoreParameters),\n" + " trailing);", + getLLVMStyleWithColumns(69)); + verifyFormat("Foo::Foo()\n" + "#ifdef BAR\n" + " : baz(0)\n" + "#endif\n" + "{\n" + "}"); + verifyFormat("void f() {\n" + " if (true)\n" + "#ifdef A\n" + " f(42);\n" + " x();\n" + "#else\n" + " g();\n" + " x();\n" + "#endif\n" + "}"); + verifyFormat("void f(param1, param2,\n" + " param3,\n" + "#ifdef A\n" + " param4(param5,\n" + "#ifdef A1\n" + " param6,\n" + "#ifdef A2\n" + " param7),\n" + "#else\n" + " param8),\n" + " param9,\n" + "#endif\n" + " param10,\n" + "#endif\n" + " param11)\n" + "#else\n" + " param12)\n" + "#endif\n" + "{\n" + " x();\n" + "}", + getLLVMStyleWithColumns(28)); + verifyFormat("#if 1\n" + "int i;"); + verifyFormat("#if 1\n" + "#endif\n" + "#if 1\n" + "#else\n" + "#endif\n"); + verifyFormat("DEBUG({\n" + " return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" + "});\n" + "#if a\n" + "#else\n" + "#endif"); + + verifyIncompleteFormat("void f(\n" + "#if A\n" + " );\n" + "#else\n" + "#endif"); +} + +TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) { + verifyFormat("#endif\n" + "#if B"); +} + +TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) { + FormatStyle SingleLine = getLLVMStyle(); + SingleLine.AllowShortIfStatementsOnASingleLine = true; + verifyFormat("#if 0\n" + "#elif 1\n" + "#endif\n" + "void foo() {\n" + " if (test) foo2();\n" + "}", + SingleLine); +} + +TEST_F(FormatTest, LayoutBlockInsideParens) { + verifyFormat("functionCall({ int i; });"); + verifyFormat("functionCall({\n" + " int i;\n" + " int j;\n" + "});"); + verifyFormat("functionCall(\n" + " {\n" + " int i;\n" + " int j;\n" + " },\n" + " aaaa, bbbb, cccc);"); + verifyFormat("functionA(functionB({\n" + " int i;\n" + " int j;\n" + " }),\n" + " aaaa, bbbb, cccc);"); + verifyFormat("functionCall(\n" + " {\n" + " int i;\n" + " int j;\n" + " },\n" + " aaaa, bbbb, // comment\n" + " cccc);"); + verifyFormat("functionA(functionB({\n" + " int i;\n" + " int j;\n" + " }),\n" + " aaaa, bbbb, // comment\n" + " cccc);"); + verifyFormat("functionCall(aaaa, bbbb, { int i; });"); + verifyFormat("functionCall(aaaa, bbbb, {\n" + " int i;\n" + " int j;\n" + "});"); + verifyFormat( + "Aaa(\n" // FIXME: There shouldn't be a linebreak here. + " {\n" + " int i; // break\n" + " },\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" + " ccccccccccccccccc));"); + verifyFormat("DEBUG({\n" + " if (a)\n" + " f();\n" + "});"); +} + +TEST_F(FormatTest, LayoutBlockInsideStatement) { + EXPECT_EQ("SOME_MACRO { int i; }\n" + "int i;", + format(" SOME_MACRO {int i;} int i;")); +} + +TEST_F(FormatTest, LayoutNestedBlocks) { + verifyFormat("void AddOsStrings(unsigned bitmask) {\n" + " struct s {\n" + " int i;\n" + " };\n" + " s kBitsToOs[] = {{10}};\n" + " for (int i = 0; i < 10; ++i)\n" + " return;\n" + "}"); + verifyFormat("call(parameter, {\n" + " something();\n" + " // Comment using all columns.\n" + " somethingelse();\n" + "});", + getLLVMStyleWithColumns(40)); + verifyFormat("DEBUG( //\n" + " { f(); }, a);"); + verifyFormat("DEBUG( //\n" + " {\n" + " f(); //\n" + " },\n" + " a);"); + + EXPECT_EQ("call(parameter, {\n" + " something();\n" + " // Comment too\n" + " // looooooooooong.\n" + " somethingElse();\n" + "});", + format("call(parameter, {\n" + " something();\n" + " // Comment too looooooooooong.\n" + " somethingElse();\n" + "});", + getLLVMStyleWithColumns(29))); + EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });")); + EXPECT_EQ("DEBUG({ // comment\n" + " int i;\n" + "});", + format("DEBUG({ // comment\n" + "int i;\n" + "});")); + EXPECT_EQ("DEBUG({\n" + " int i;\n" + "\n" + " // comment\n" + " int j;\n" + "});", + format("DEBUG({\n" + " int i;\n" + "\n" + " // comment\n" + " int j;\n" + "});")); + + verifyFormat("DEBUG({\n" + " if (a)\n" + " return;\n" + "});"); + verifyGoogleFormat("DEBUG({\n" + " if (a) return;\n" + "});"); + FormatStyle Style = getGoogleStyle(); + Style.ColumnLimit = 45; + verifyFormat("Debug(aaaaa,\n" + " {\n" + " if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n" + " },\n" + " a);", + Style); + + verifyFormat("SomeFunction({MACRO({ return output; }), b});"); + + verifyNoCrash("^{v^{a}}"); +} + +TEST_F(FormatTest, FormatNestedBlocksInMacros) { + EXPECT_EQ("#define MACRO() \\\n" + " Debug(aaa, /* force line break */ \\\n" + " { \\\n" + " int i; \\\n" + " int j; \\\n" + " })", + format("#define MACRO() Debug(aaa, /* force line break */ \\\n" + " { int i; int j; })", + getGoogleStyle())); + + EXPECT_EQ("#define A \\\n" + " [] { \\\n" + " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n" + " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); \\\n" + " }", + format("#define A [] { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n" + "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); }", + getGoogleStyle())); +} + +TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) { + EXPECT_EQ("{}", format("{}")); + verifyFormat("enum E {};"); + verifyFormat("enum E {}"); +} + +TEST_F(FormatTest, FormatBeginBlockEndMacros) { + FormatStyle Style = getLLVMStyle(); + Style.MacroBlockBegin = "^[A-Z_]+_BEGIN$"; + Style.MacroBlockEnd = "^[A-Z_]+_END$"; + verifyFormat("FOO_BEGIN\n" + " FOO_ENTRY\n" + "FOO_END", Style); + verifyFormat("FOO_BEGIN\n" + " NESTED_FOO_BEGIN\n" + " NESTED_FOO_ENTRY\n" + " NESTED_FOO_END\n" + "FOO_END", Style); + verifyFormat("FOO_BEGIN(Foo, Bar)\n" + " int x;\n" + " x = 1;\n" + "FOO_END(Baz)", Style); +} + +//===----------------------------------------------------------------------===// +// Line break tests. +//===----------------------------------------------------------------------===// + +TEST_F(FormatTest, PreventConfusingIndents) { + verifyFormat( + "void f() {\n" + " SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n" + " parameter, parameter, parameter)),\n" + " SecondLongCall(parameter));\n" + "}"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " [aaaaaaaaaaaaaaaaaaaaaaaa\n" + " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" + " [aaaaaaaaaaaaaaaaaaaaaaaa]];"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" + " aaaaaaaaaaaaaaaaaaaaaaaa<\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n" + " aaaaaaaaaaaaaaaaaaaaaaaa>;"); + verifyFormat("int a = bbbb && ccc && fffff(\n" + "#define A Just forcing a new line\n" + " ddd);"); +} + +TEST_F(FormatTest, LineBreakingInBinaryExpressions) { + verifyFormat( + "bool aaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n" + " bbbbbbbb();"); + verifyFormat( + "bool aaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n" + " bbbbbbbb();"); + + verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n" + " ccccccccc == ddddddddddd;"); + verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n" + " ccccccccc == ddddddddddd;"); + verifyFormat( + "bool aaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n" + " ccccccccc == ddddddddddd;"); + + verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" + " aaaaaa) &&\n" + " bbbbbb && cccccc;"); + verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" + " aaaaaa) >>\n" + " bbbbbb;"); + verifyFormat("aa = Whitespaces.addUntouchableComment(\n" + " SourceMgr.getSpellingColumnNumber(\n" + " TheLine.Last->FormatTok.Tok.getLocation()) -\n" + " 1);"); + + verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n" + " cccccc) {\n}"); + verifyFormat("b = a &&\n" + " // Comment\n" + " b.c && d;"); + + // If the LHS of a comparison is not a binary expression itself, the + // additional linebreak confuses many people. + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n" + "}"); + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" + "}"); + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" + "}"); + // Even explicit parentheses stress the precedence enough to make the + // additional break unnecessary. + verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" + "}"); + // This cases is borderline, but with the indentation it is still readable. + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" + "}", + getLLVMStyleWithColumns(75)); + + // If the LHS is a binary expression, we should still use the additional break + // as otherwise the formatting hides the operator precedence. + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" + " 5) {\n" + "}"); + + FormatStyle OnePerLine = getLLVMStyle(); + OnePerLine.BinPackParameters = false; + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}", + OnePerLine); +} + +TEST_F(FormatTest, ExpressionIndentation) { + verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n" + " ccccccccccccccccccccccccccccccccccccccccc;"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); + verifyFormat("if () {\n" + "} else if (aaaaa &&\n" + " bbbbb > // break\n" + " ccccc) {\n" + "}"); + + // Presence of a trailing comment used to change indentation of b. + verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n" + " b;\n" + "return aaaaaaaaaaaaaaaaaaa +\n" + " b; //", + getLLVMStyleWithColumns(30)); +} + +TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) { + // Not sure what the best system is here. Like this, the LHS can be found + // immediately above an operator (everything with the same or a higher + // indent). The RHS is aligned right of the operator and so compasses + // everything until something with the same indent as the operator is found. + // FIXME: Is this a good system? + FormatStyle Style = getLLVMStyle(); + Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; + verifyFormat( + "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " > ccccccccccccccccccccccccccccccccccccccccc;", + Style); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", + Style); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", + Style); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", + Style); + verifyFormat("if () {\n" + "} else if (aaaaa\n" + " && bbbbb // break\n" + " > ccccc) {\n" + "}", + Style); + verifyFormat("return (a)\n" + " // comment\n" + " + b;", + Style); + verifyFormat( + "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " + cc;", + Style); + + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", + Style); + + // Forced by comments. + verifyFormat( + "unsigned ContentSize =\n" + " sizeof(int16_t) // DWARF ARange version number\n" + " + sizeof(int32_t) // Offset of CU in the .debug_info section\n" + " + sizeof(int8_t) // Pointer Size (in bytes)\n" + " + sizeof(int8_t); // Segment Size (in bytes)"); + + verifyFormat("return boost::fusion::at_c<0>(iiii).second\n" + " == boost::fusion::at_c<1>(iiii).second;", + Style); + + Style.ColumnLimit = 60; + verifyFormat("zzzzzzzzzz\n" + " = bbbbbbbbbbbbbbbbb\n" + " >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); +} + +TEST_F(FormatTest, NoOperandAlignment) { + FormatStyle Style = getLLVMStyle(); + Style.AlignOperands = false; + Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; + verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " > ccccccccccccccccccccccccccccccccccccccccc;", + Style); + + verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " + cc;", + Style); + verifyFormat("int a = aa\n" + " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" + " * cccccccccccccccccccccccccccccccccccc;", + Style); + + Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; + verifyFormat("return (a > b\n" + " // comment1\n" + " // comment2\n" + " || c);", + Style); +} + +TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) { + FormatStyle Style = getLLVMStyle(); + Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; + verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;", + Style); +} + +TEST_F(FormatTest, ConstructorInitializers) { + verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}"); + verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}", + getLLVMStyleWithColumns(45)); + verifyFormat("Constructor()\n" + " : Inttializer(FitsOnTheLine) {}", + getLLVMStyleWithColumns(44)); + verifyFormat("Constructor()\n" + " : Inttializer(FitsOnTheLine) {}", + getLLVMStyleWithColumns(43)); + + verifyFormat("template \n" + "Constructor() : Initializer(FitsOnTheLine) {}", + getLLVMStyleWithColumns(45)); + + verifyFormat( + "SomeClass::Constructor()\n" + " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); + + verifyFormat( + "SomeClass::Constructor()\n" + " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}"); + verifyFormat( + "SomeClass::Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); + verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " : aaaaaaaaaa(aaaaaa) {}"); + + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaa() {}"); + + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); + + verifyFormat("Constructor(int Parameter = 0)\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}"); + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n" + "}", + getLLVMStyleWithColumns(60)); + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}"); + + // Here a line could be saved by splitting the second initializer onto two + // lines, but that is not desirable. + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaa(aaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); + + FormatStyle OnePerLine = getLLVMStyle(); + OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; + OnePerLine.AllowAllParametersOfDeclarationOnNextLine = false; + verifyFormat("SomeClass::Constructor()\n" + " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", + OnePerLine); + verifyFormat("SomeClass::Constructor()\n" + " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", + OnePerLine); + verifyFormat("MyClass::MyClass(int var)\n" + " : some_var_(var), // 4 space indent\n" + " some_other_var_(var + 1) { // lined up\n" + "}", + OnePerLine); + verifyFormat("Constructor()\n" + " : aaaaa(aaaaaa),\n" + " aaaaa(aaaaaa),\n" + " aaaaa(aaaaaa),\n" + " aaaaa(aaaaaa),\n" + " aaaaa(aaaaaa) {}", + OnePerLine); + verifyFormat("Constructor()\n" + " : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaa) {}", + OnePerLine); + OnePerLine.BinPackParameters = false; + verifyFormat( + "Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaa().aaa(),\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", + OnePerLine); + OnePerLine.ColumnLimit = 60; + verifyFormat("Constructor()\n" + " : aaaaaaaaaaaaaaaaaaaa(a),\n" + " bbbbbbbbbbbbbbbbbbbbbbbb(b) {}", + OnePerLine); + + EXPECT_EQ("Constructor()\n" + " : // Comment forcing unwanted break.\n" + " aaaa(aaaa) {}", + format("Constructor() :\n" + " // Comment forcing unwanted break.\n" + " aaaa(aaaa) {}")); +} + +TEST_F(FormatTest, MemoizationTests) { + // This breaks if the memoization lookup does not take \c Indent and + // \c LastSpace into account. + verifyFormat( + "extern CFRunLoopTimerRef\n" + "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n" + " CFTimeInterval interval, CFOptionFlags flags,\n" + " CFIndex order, CFRunLoopTimerCallBack callout,\n" + " CFRunLoopTimerContext *context) {}"); + + // Deep nesting somewhat works around our memoization. + verifyFormat( + "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" + " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" + " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" + " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" + " aaaaa())))))))))))))))))))))))))))))))))))))));", + getLLVMStyleWithColumns(65)); + verifyFormat( + "aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa(\n" + " aaaaa,\n" + " aaaaa))))))))))));", + getLLVMStyleWithColumns(65)); + verifyFormat( + "a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(), a), a), a), a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a),\n" + " a)", + getLLVMStyleWithColumns(65)); + + // This test takes VERY long when memoization is broken. + FormatStyle OnePerLine = getLLVMStyle(); + OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; + OnePerLine.BinPackParameters = false; + std::string input = "Constructor()\n" + " : aaaa(a,\n"; + for (unsigned i = 0, e = 80; i != e; ++i) { + input += " a,\n"; + } + input += " a) {}"; + verifyFormat(input, OnePerLine); +} + +TEST_F(FormatTest, BreaksAsHighAsPossible) { + verifyFormat( + "void f() {\n" + " if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n" + " (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n" + " f();\n" + "}"); + verifyFormat("if (Intervals[i].getRange().getFirst() <\n" + " Intervals[i - 1].getRange().getLast()) {\n}"); +} + +TEST_F(FormatTest, BreaksFunctionDeclarations) { + // Principially, we break function declarations in a certain order: + // 1) break amongst arguments. + verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n" + " Cccccccccccccc cccccccccccccc);"); + verifyFormat("template \n" + "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n" + " TemplateIt *stop) {}"); + + // 2) break after return type. + verifyFormat( + "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);", + getGoogleStyle()); + + // 3) break after (. + verifyFormat( + "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n" + " Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);", + getGoogleStyle()); + + // 4) break before after nested name specifiers. + verifyFormat( + "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + "SomeClasssssssssssssssssssssssssssssssssssssss::\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);", + getGoogleStyle()); + + // However, there are exceptions, if a sufficient amount of lines can be + // saved. + // FIXME: The precise cut-offs wrt. the number of saved lines might need some + // more adjusting. + verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc);"); + verifyFormat( + "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);", + getGoogleStyle()); + verifyFormat( + "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc);"); + verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" + " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);"); + + // Break after multi-line parameters. + verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " bbbb bbbb);"); + verifyFormat("void SomeLoooooooooooongFunction(\n" + " std::unique_ptr\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " int bbbbbbbbbbbbb);"); + + // Treat overloaded operators like other functions. + verifyFormat("SomeLoooooooooooooooooooooooooogType\n" + "operator>(const SomeLoooooooooooooooooooooooooogType &other);"); + verifyFormat("SomeLoooooooooooooooooooooooooogType\n" + "operator>>(const SomeLooooooooooooooooooooooooogType &other);"); + verifyFormat("SomeLoooooooooooooooooooooooooogType\n" + "operator<<(const SomeLooooooooooooooooooooooooogType &other);"); + verifyGoogleFormat( + "SomeLoooooooooooooooooooooooooooooogType operator>>(\n" + " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); + verifyGoogleFormat( + "SomeLoooooooooooooooooooooooooooooogType operator<<(\n" + " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); + verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n" + "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);"); + verifyGoogleFormat( + "typename aaaaaaaaaa::aaaaaaaaaaa\n" + "aaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}"); + + FormatStyle Style = getLLVMStyle(); + Style.PointerAlignment = FormatStyle::PAS_Left; + verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}", + Style); + verifyFormat("void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", + Style); +} + +TEST_F(FormatTest, TrailingReturnType) { + verifyFormat("auto foo() -> int;\n"); + verifyFormat("struct S {\n" + " auto bar() const -> int;\n" + "};"); + verifyFormat("template \n" + "auto load_img(const std::string &filename)\n" + " -> alias::tensor {}"); + verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n" + " -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}"); + verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}"); + verifyFormat("template \n" + "auto aaaaaaaaaaaaaaaaaaaaaa(T t)\n" + " -> decltype(eaaaaaaaaaaaaaaa(t.a).aaaaaaaa());"); + + // Not trailing return types. + verifyFormat("void f() { auto a = b->c(); }"); +} + +TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) { + // Avoid breaking before trailing 'const' or other trailing annotations, if + // they are not function-like. + FormatStyle Style = getGoogleStyle(); + Style.ColumnLimit = 47; + verifyFormat("void someLongFunction(\n" + " int someLoooooooooooooongParameter) const {\n}", + getLLVMStyleWithColumns(47)); + verifyFormat("LoooooongReturnType\n" + "someLoooooooongFunction() const {}", + getLLVMStyleWithColumns(47)); + verifyFormat("LoooooongReturnType someLoooooooongFunction()\n" + " const {}", + Style); + verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;"); + verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;"); + verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaa aaaaaaaaaaaaaaaaaaaa) override final;"); + verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n" + " aaaaaaaaaaa aaaaa) const override;"); + verifyGoogleFormat( + "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " const override;"); + + // Even if the first parameter has to be wrapped. + verifyFormat("void someLongFunction(\n" + " int someLongParameter) const {}", + getLLVMStyleWithColumns(46)); + verifyFormat("void someLongFunction(\n" + " int someLongParameter) const {}", + Style); + verifyFormat("void someLongFunction(\n" + " int someLongParameter) override {}", + Style); + verifyFormat("void someLongFunction(\n" + " int someLongParameter) OVERRIDE {}", + Style); + verifyFormat("void someLongFunction(\n" + " int someLongParameter) final {}", + Style); + verifyFormat("void someLongFunction(\n" + " int someLongParameter) FINAL {}", + Style); + verifyFormat("void someLongFunction(\n" + " int parameter) const override {}", + Style); + + Style.BreakBeforeBraces = FormatStyle::BS_Allman; + verifyFormat("void someLongFunction(\n" + " int someLongParameter) const\n" + "{\n" + "}", + Style); + + // Unless these are unknown annotations. + verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n" + " aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " LONG_AND_UGLY_ANNOTATION;"); + + // Breaking before function-like trailing annotations is fine to keep them + // close to their arguments. + verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); + verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" + " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); + verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" + " LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}"); + verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n" + " AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);"); + verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});"); + + verifyFormat( + "void aaaaaaaaaaaaaaaaaa()\n" + " __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa));"); + verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " __attribute__((unused));"); + verifyGoogleFormat( + "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " GUARDED_BY(aaaaaaaaaaaa);"); + verifyGoogleFormat( + "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " GUARDED_BY(aaaaaaaaaaaa);"); + verifyGoogleFormat( + "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" + " aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyGoogleFormat( + "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa;"); +} + +TEST_F(FormatTest, FunctionAnnotations) { + verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" + "int OldFunction(const string ¶meter) {}"); + verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" + "string OldFunction(const string ¶meter) {}"); + verifyFormat("template \n" + "DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" + "string OldFunction(const string ¶meter) {}"); + + // Not function annotations. + verifyFormat("ASSERT(\"aaaaa\") << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"); + verifyFormat("TEST_F(ThisIsATestFixtureeeeeeeeeeeee,\n" + " ThisIsATestWithAReallyReallyReallyReallyLongName) {}"); +} + +TEST_F(FormatTest, BreaksDesireably) { + verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" + " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" + " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" + "}"); + + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); + + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); + + verifyFormat( + "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" + " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));"); + + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + + verifyFormat( + "void f() {\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" + "}"); + verifyFormat( + "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); + verifyFormat( + "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); + verifyFormat("aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + + // Indent consistently independent of call expression and unary operator. + verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" + " dddddddddddddddddddddddddddddd));"); + verifyFormat("aaaaaaaaaaa(!bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" + " dddddddddddddddddddddddddddddd));"); + verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n" + " dddddddddddddddddddddddddddddd));"); + + // This test case breaks on an incorrect memoization, i.e. an optimization not + // taking into account the StopAt value. + verifyFormat( + "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" + " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + + verifyFormat("{\n {\n {\n" + " Annotation.SpaceRequiredBefore =\n" + " Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n" + " Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n" + " }\n }\n}"); + + // Break on an outer level if there was a break on an inner level. + EXPECT_EQ("f(g(h(a, // comment\n" + " b, c),\n" + " d, e),\n" + " x, y);", + format("f(g(h(a, // comment\n" + " b, c), d, e), x, y);")); + + // Prefer breaking similar line breaks. + verifyFormat( + "const int kTrackingOptions = NSTrackingMouseMoved |\n" + " NSTrackingMouseEnteredAndExited |\n" + " NSTrackingActiveAlways;"); +} + +TEST_F(FormatTest, FormatsDeclarationsOnePerLine) { + FormatStyle NoBinPacking = getGoogleStyle(); + NoBinPacking.BinPackParameters = false; + NoBinPacking.BinPackArguments = true; + verifyFormat("void f() {\n" + " f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" + "}", + NoBinPacking); + verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n" + " int aaaaaaaaaaaaaaaaaaaa,\n" + " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", + NoBinPacking); + + NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; + verifyFormat("void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " vector bbbbbbbbbbbbbbb);", + NoBinPacking); + // FIXME: This behavior difference is probably not wanted. However, currently + // we cannot distinguish BreakBeforeParameter being set because of the wrapped + // template arguments from BreakBeforeParameter being set because of the + // one-per-line formatting. + verifyFormat( + "void fffffffffff(aaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaa);", + NoBinPacking); + verifyFormat( + "void fffffffffff(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " aaaaaaaaaa);"); +} + +TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) { + FormatStyle NoBinPacking = getGoogleStyle(); + NoBinPacking.BinPackParameters = false; + NoBinPacking.BinPackArguments = false; + verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);", + NoBinPacking); + verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));", + NoBinPacking); + verifyFormat( + "aaaaaaaa(aaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" + " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));", + NoBinPacking); + verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaaaaa();", + NoBinPacking); + verifyFormat("void f() {\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n" + "}", + NoBinPacking); + + verifyFormat( + "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaa,\n" + " aaaaaaaaaaaa);", + NoBinPacking); + verifyFormat( + "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n" + " ddddddddddddddddddddddddddddd),\n" + " test);", + NoBinPacking); + + verifyFormat("std::vector\n" + " aaaaaaaaaaaaaaaaaa;", + NoBinPacking); + verifyFormat("a(\"a\"\n" + " \"a\",\n" + " a);"); + + NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; + verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n" + " aaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + NoBinPacking); + verifyFormat( + "void f() {\n" + " aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaa();\n" + "}", + NoBinPacking); + verifyFormat( + "template \n" + "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}", + NoBinPacking); +} + +TEST_F(FormatTest, AdaptiveOnePerLineFormatting) { + FormatStyle Style = getLLVMStyleWithColumns(15); + Style.ExperimentalAutoDetectBinPacking = true; + EXPECT_EQ("aaa(aaaa,\n" + " aaaa,\n" + " aaaa);\n" + "aaa(aaaa,\n" + " aaaa,\n" + " aaaa);", + format("aaa(aaaa,\n" // one-per-line + " aaaa,\n" + " aaaa );\n" + "aaa(aaaa, aaaa, aaaa);", // inconclusive + Style)); + EXPECT_EQ("aaa(aaaa, aaaa,\n" + " aaaa);\n" + "aaa(aaaa, aaaa,\n" + " aaaa);", + format("aaa(aaaa, aaaa,\n" // bin-packed + " aaaa );\n" + "aaa(aaaa, aaaa, aaaa);", // inconclusive + Style)); +} + +TEST_F(FormatTest, FormatsBuilderPattern) { + verifyFormat("return llvm::StringSwitch(name)\n" + " .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n" + " .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n" + " .StartsWith(\".init\", ORDER_INIT)\n" + " .StartsWith(\".fini\", ORDER_FINI)\n" + " .StartsWith(\".hash\", ORDER_HASH)\n" + " .Default(ORDER_TEXT);\n"); + + verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n" + " aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();"); + verifyFormat( + "aaaaaaa->aaaaaaa\n" + " ->aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaa->aaaaaaa\n" + " ->aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n" + " aaaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n" + " aaaaaa->aaaaaaaaaaaa()\n" + " ->aaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " ->aaaaaaaaaaaaaaaaa();"); + verifyGoogleFormat( + "void f() {\n" + " someo->Add((new util::filetools::Handler(dir))\n" + " ->OnEvent1(NewPermanentCallback(\n" + " this, &HandlerHolderClass::EventHandlerCBA))\n" + " ->OnEvent2(NewPermanentCallback(\n" + " this, &HandlerHolderClass::EventHandlerCBB))\n" + " ->OnEvent3(NewPermanentCallback(\n" + " this, &HandlerHolderClass::EventHandlerCBC))\n" + " ->OnEvent5(NewPermanentCallback(\n" + " this, &HandlerHolderClass::EventHandlerCBD))\n" + " ->OnEvent6(NewPermanentCallback(\n" + " this, &HandlerHolderClass::EventHandlerCBE)));\n" + "}"); + + verifyFormat( + "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();"); + verifyFormat("aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa();"); + verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa();"); + verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaa();"); + verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n" + " ->aaaaaaaaaaaaaae(0)\n" + " ->aaaaaaaaaaaaaaa();"); + + // Don't linewrap after very short segments. + verifyFormat("a().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + verifyFormat("aa().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + verifyFormat("aaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n" + " .has();"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();"); + + // Prefer not to break after empty parentheses. + verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n" + " First->LastNewlineOffset);"); + + // Prefer not to create "hanging" indents. + verifyFormat( + "return !soooooooooooooome_map\n" + " .insert(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .second;"); + verifyFormat( + "return aaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa)\n" + " .aaaa(aaaaaaaaaaaaaa);"); + // No hanging indent here. + verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa.aaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa().aaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("aaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n" + " .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + getLLVMStyleWithColumns(60)); + verifyFormat("aaaaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n" + " .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + getLLVMStyleWithColumns(59)); + verifyFormat("aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); +} + +TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) { + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}"); + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}"); + + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" + " ccccccccccccccccccccccccc) {\n}"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n" + " ccccccccccccccccccccccccc) {\n}"); + + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" + " ccccccccccccccccccccccccc) {\n}"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n" + " ccccccccccccccccccccccccc) {\n}"); + + verifyFormat( + "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n" + " ccccccccccccccccccccccccc) {\n}"); + verifyFormat( + "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n" + " ccccccccccccccccccccccccc) {\n}"); + + verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n" + " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n" + " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n" + " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); + verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n" + " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n" + " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n" + " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); + + verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n" + " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n" + " aaaaaaaaaaaaaaa != aa) {\n}"); + verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n" + " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n" + " aaaaaaaaaaaaaaa != aa) {\n}"); +} + +TEST_F(FormatTest, BreaksAfterAssignments) { + verifyFormat( + "unsigned Cost =\n" + " TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n" + " SI->getPointerAddressSpaceee());\n"); + verifyFormat( + "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n" + " Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());"); + + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("unsigned OriginalStartColumn =\n" + " SourceMgr.getSpellingColumnNumber(\n" + " Current.FormatTok.getStartOfNonWhitespace()) -\n" + " 1;"); +} + +TEST_F(FormatTest, AlignsAfterAssignments) { + verifyFormat( + "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaa;"); +} + +TEST_F(FormatTest, AlignsAfterReturn) { + verifyFormat( + "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" + " aaaaaaaaaaaaaaaaaaaaaa();"); + verifyFormat( + "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" + " aaaaaaaaaaaaaaaaaaaaaa());"); + verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat("return\n" + " // true if code is one of a or b.\n" + " code == a || code == b;"); +} + +TEST_F(FormatTest, AlignsAfterOpenBracket) { + verifyFormat( + "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" + " aaaaaaaaa aaaaaaa) {}"); + verifyFormat( + "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" + " aaaaaaaaaaa aaaaaaaaa);"); + verifyFormat( + "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaa));"); + FormatStyle Style = getLLVMStyle(); + Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; + verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}", + Style); + verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n" + " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);", + Style); + verifyFormat("SomeLongVariableName->someFunction(\n" + " foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));", + Style); + verifyFormat( + "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" + " aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", + Style); + verifyFormat( + "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" + " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat( + "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", + Style); + + Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak; + Style.BinPackArguments = false; + Style.BinPackParameters = false; + verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaa aaaaaaaa,\n" + " aaaaaaaaa aaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", + Style); + verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n" + " aaaaaaaaaaa aaaaaaaaa,\n" + " aaaaaaaaaaa aaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat("SomeLongVariableName->someFunction(\n" + " foooooooo(\n" + " aaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", + Style); +} + +TEST_F(FormatTest, ParenthesesAndOperandAlignment) { + FormatStyle Style = getLLVMStyleWithColumns(40); + verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" + " bbbbbbbbbbbbbbbbbbbbbb);", + Style); + Style.AlignAfterOpenBracket = FormatStyle::BAS_Align; + Style.AlignOperands = false; + verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" + " bbbbbbbbbbbbbbbbbbbbbb);", + Style); + Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; + Style.AlignOperands = true; + verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" + " bbbbbbbbbbbbbbbbbbbbbb);", + Style); + Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; + Style.AlignOperands = false; + verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" + " bbbbbbbbbbbbbbbbbbbbbb);", + Style); +} + +TEST_F(FormatTest, BreaksConditionalExpressions) { + verifyFormat( + "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n" + " : aaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa);"); + verifyFormat( + "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa);"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaa;"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaa;"); + verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" + " aaaaaaaaa\n" + " ? b\n" + " : c);"); + verifyFormat("return aaaa == bbbb\n" + " // comment\n" + " ? aaaa\n" + " : bbbb;"); + verifyFormat("unsigned Indent =\n" + " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n" + " ? IndentForLevel[TheLine.Level]\n" + " : TheLine * 2,\n" + " TheLine.InPPDirective, PreviousEndOfLineColumn);", + getLLVMStyleWithColumns(70)); + verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" + " ? aaaaaaaaaaaaaaa\n" + " : bbbbbbbbbbbbbbb //\n" + " ? ccccccccccccccc\n" + " : ddddddddddddddd;"); + verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" + " ? aaaaaaaaaaaaaaa\n" + " : (bbbbbbbbbbbbbbb //\n" + " ? ccccccccccccccc\n" + " : ddddddddddddddd);"); + verifyFormat( + "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaa +\n" + " aaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaa;"); + verifyFormat( + "aaaaaa = aaaaaaaaaaaa\n" + " ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + + FormatStyle NoBinPacking = getLLVMStyle(); + NoBinPacking.BinPackArguments = false; + verifyFormat( + "void f() {\n" + " g(aaa,\n" + " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ? aaaaaaaaaaaaaaa\n" + " : aaaaaaaaaaaaaaa);\n" + "}", + NoBinPacking); + verifyFormat( + "void f() {\n" + " g(aaa,\n" + " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " ?: aaaaaaaaaaaaaaa);\n" + "}", + NoBinPacking); + + verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n" + " // comment.\n" + " ccccccccccccccccccccccccccccccccccccccc\n" + " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);"); + + // Assignments in conditional expressions. Apparently not uncommon :-(. + verifyFormat("return a != b\n" + " // comment\n" + " ? a = b\n" + " : a = b;"); + verifyFormat("return a != b\n" + " // comment\n" + " ? a = a != b\n" + " // comment\n" + " ? a = b\n" + " : a\n" + " : a;\n"); + verifyFormat("return a != b\n" + " // comment\n" + " ? a\n" + " : a = a != b\n" + " // comment\n" + " ? a = b\n" + " : a;"); +} + +TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) { + FormatStyle Style = getLLVMStyle(); + Style.BreakBeforeTernaryOperators = false; + Style.ColumnLimit = 70; + verifyFormat( + "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat( + "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n" + " aaaaaaaaaaaaa);", + Style); + verifyFormat( + "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa);", + Style); + verifyFormat( + "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaa);", + Style); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", + Style); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa;", + Style); + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", + Style); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" + " aaaaaaaaaaaaaaa :\n" + " aaaaaaaaaaaaaaa;", + Style); + verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" + " aaaaaaaaa ?\n" + " b :\n" + " c);", + Style); + verifyFormat( + "unsigned Indent =\n" + " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n" + " IndentForLevel[TheLine.Level] :\n" + " TheLine * 2,\n" + " TheLine.InPPDirective, PreviousEndOfLineColumn);", + Style); + verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" + " aaaaaaaaaaaaaaa :\n" + " bbbbbbbbbbbbbbb ? //\n" + " ccccccccccccccc :\n" + " ddddddddddddddd;", + Style); + verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" + " aaaaaaaaaaaaaaa :\n" + " (bbbbbbbbbbbbbbb ? //\n" + " ccccccccccccccc :\n" + " ddddddddddddddd);", + Style); +} + +TEST_F(FormatTest, DeclarationsOfMultipleVariables) { + verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n" + " aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();"); + verifyFormat("bool a = true, b = false;"); + + verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n" + " bbbbbbbbbbbbbbbbbbbbbbbbb =\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);"); + verifyFormat( + "bool aaaaaaaaaaaaaaaaaaaaa =\n" + " bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n" + " d = e && f;"); + verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n" + " c = cccccccccccccccccccc, d = dddddddddddddddddddd;"); + verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" + " *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;"); + verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n" + " ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;"); + + FormatStyle Style = getGoogleStyle(); + Style.PointerAlignment = FormatStyle::PAS_Left; + Style.DerivePointerAlignment = false; + verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n" + " *b = bbbbbbbbbbbbbbbbbbb;", + Style); + verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" + " *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;", + Style); +} + +TEST_F(FormatTest, ConditionalExpressionsInBrackets) { + verifyFormat("arr[foo ? bar : baz];"); + verifyFormat("f()[foo ? bar : baz];"); + verifyFormat("(a + b)[foo ? bar : baz];"); + verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];"); +} + +TEST_F(FormatTest, AlignsStringLiterals) { + verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n" + " \"short literal\");"); + verifyFormat( + "looooooooooooooooooooooooongFunction(\n" + " \"short literal\"\n" + " \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");"); + verifyFormat("someFunction(\"Always break between multi-line\"\n" + " \" string literals\",\n" + " and, other, parameters);"); + EXPECT_EQ("fun + \"1243\" /* comment */\n" + " \"5678\";", + format("fun + \"1243\" /* comment */\n" + " \"5678\";", + getLLVMStyleWithColumns(28))); + EXPECT_EQ( + "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" + " \"aaaaaaaaaaaaaaaaaaaaa\"\n" + " \"aaaaaaaaaaaaaaaa\";", + format("aaaaaa =" + "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa " + "aaaaaaaaaaaaaaaaaaaaa\" " + "\"aaaaaaaaaaaaaaaa\";")); + verifyFormat("a = a + \"a\"\n" + " \"a\"\n" + " \"a\";"); + verifyFormat("f(\"a\", \"b\"\n" + " \"c\");"); + + verifyFormat( + "#define LL_FORMAT \"ll\"\n" + "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n" + " \"d, ddddddddd: %\" LL_FORMAT \"d\");"); + + verifyFormat("#define A(X) \\\n" + " \"aaaaa\" #X \"bbbbbb\" \\\n" + " \"ccccc\"", + getLLVMStyleWithColumns(23)); + verifyFormat("#define A \"def\"\n" + "f(\"abc\" A \"ghi\"\n" + " \"jkl\");"); + + verifyFormat("f(L\"a\"\n" + " L\"b\");"); + verifyFormat("#define A(X) \\\n" + " L\"aaaaa\" #X L\"bbbbbb\" \\\n" + " L\"ccccc\"", + getLLVMStyleWithColumns(25)); + + verifyFormat("f(@\"a\"\n" + " @\"b\");"); + verifyFormat("NSString s = @\"a\"\n" + " @\"b\"\n" + " @\"c\";"); + verifyFormat("NSString s = @\"a\"\n" + " \"b\"\n" + " \"c\";"); +} + +TEST_F(FormatTest, ReturnTypeBreakingStyle) { + FormatStyle Style = getLLVMStyle(); + // No declarations or definitions should be moved to own line. + Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_None; + verifyFormat("class A {\n" + " int f() { return 1; }\n" + " int g();\n" + "};\n" + "int f() { return 1; }\n" + "int g();\n", + Style); + + // All declarations and definitions should have the return type moved to its + // own + // line. + Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All; + verifyFormat("class E {\n" + " int\n" + " f() {\n" + " return 1;\n" + " }\n" + " int\n" + " g();\n" + "};\n" + "int\n" + "f() {\n" + " return 1;\n" + "}\n" + "int\n" + "g();\n", + Style); + + // Top-level definitions, and no kinds of declarations should have the + // return type moved to its own line. + Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevelDefinitions; + verifyFormat("class B {\n" + " int f() { return 1; }\n" + " int g();\n" + "};\n" + "int\n" + "f() {\n" + " return 1;\n" + "}\n" + "int g();\n", + Style); + + // Top-level definitions and declarations should have the return type moved + // to its own line. + Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevel; + verifyFormat("class C {\n" + " int f() { return 1; }\n" + " int g();\n" + "};\n" + "int\n" + "f() {\n" + " return 1;\n" + "}\n" + "int\n" + "g();\n", + Style); + + // All definitions should have the return type moved to its own line, but no + // kinds of declarations. + Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_AllDefinitions; + verifyFormat("class D {\n" + " int\n" + " f() {\n" + " return 1;\n" + " }\n" + " int g();\n" + "};\n" + "int\n" + "f() {\n" + " return 1;\n" + "}\n" + "int g();\n", + Style); + verifyFormat("const char *\n" + "f(void) {\n" // Break here. + " return \"\";\n" + "}\n" + "const char *bar(void);\n", // No break here. + Style); + verifyFormat("template \n" + "T *\n" + "f(T &c) {\n" // Break here. + " return NULL;\n" + "}\n" + "template T *f(T &c);\n", // No break here. + Style); + verifyFormat("class C {\n" + " int\n" + " operator+() {\n" + " return 1;\n" + " }\n" + " int\n" + " operator()() {\n" + " return 1;\n" + " }\n" + "};\n", + Style); + verifyFormat("void\n" + "A::operator()() {}\n" + "void\n" + "A::operator>>() {}\n" + "void\n" + "A::operator+() {}\n", + Style); + verifyFormat("void *operator new(std::size_t s);", // No break here. + Style); + verifyFormat("void *\n" + "operator new(std::size_t s) {}", + Style); + verifyFormat("void *\n" + "operator delete[](void *ptr) {}", + Style); + Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; + verifyFormat("const char *\n" + "f(void)\n" // Break here. + "{\n" + " return \"\";\n" + "}\n" + "const char *bar(void);\n", // No break here. + Style); + verifyFormat("template \n" + "T *\n" // Problem here: no line break + "f(T &c)\n" // Break here. + "{\n" + " return NULL;\n" + "}\n" + "template T *f(T &c);\n", // No break here. + Style); +} + +TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) { + FormatStyle NoBreak = getLLVMStyle(); + NoBreak.AlwaysBreakBeforeMultilineStrings = false; + FormatStyle Break = getLLVMStyle(); + Break.AlwaysBreakBeforeMultilineStrings = true; + verifyFormat("aaaa = \"bbbb\"\n" + " \"cccc\";", + NoBreak); + verifyFormat("aaaa =\n" + " \"bbbb\"\n" + " \"cccc\";", + Break); + verifyFormat("aaaa(\"bbbb\"\n" + " \"cccc\");", + NoBreak); + verifyFormat("aaaa(\n" + " \"bbbb\"\n" + " \"cccc\");", + Break); + verifyFormat("aaaa(qqq, \"bbbb\"\n" + " \"cccc\");", + NoBreak); + verifyFormat("aaaa(qqq,\n" + " \"bbbb\"\n" + " \"cccc\");", + Break); + verifyFormat("aaaa(qqq,\n" + " L\"bbbb\"\n" + " L\"cccc\");", + Break); + verifyFormat("aaaaa(aaaaaa, aaaaaaa(\"aaaa\"\n" + " \"bbbb\"));", + Break); + verifyFormat("string s = someFunction(\n" + " \"abc\"\n" + " \"abc\");", + Break); + + // As we break before unary operators, breaking right after them is bad. + verifyFormat("string foo = abc ? \"x\"\n" + " \"blah blah blah blah blah blah\"\n" + " : \"y\";", + Break); + + // Don't break if there is no column gain. + verifyFormat("f(\"aaaa\"\n" + " \"bbbb\");", + Break); + + // Treat literals with escaped newlines like multi-line string literals. + EXPECT_EQ("x = \"a\\\n" + "b\\\n" + "c\";", + format("x = \"a\\\n" + "b\\\n" + "c\";", + NoBreak)); + EXPECT_EQ("xxxx =\n" + " \"a\\\n" + "b\\\n" + "c\";", + format("xxxx = \"a\\\n" + "b\\\n" + "c\";", + Break)); + + // Exempt ObjC strings for now. + EXPECT_EQ("NSString *const kString = @\"aaaa\"\n" + " @\"bbbb\";", + format("NSString *const kString = @\"aaaa\"\n" + "@\"bbbb\";", + Break)); + + Break.ColumnLimit = 0; + verifyFormat("const char *hello = \"hello llvm\";", Break); +} + +TEST_F(FormatTest, AlignsPipes) { + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n" + " \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n" + " << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";"); + verifyFormat( + "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); + verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaa);"); + verifyFormat( + "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + + verifyFormat("return out << \"somepacket = {\\n\"\n" + " << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n" + " << \" bbbb = \" << pkt.bbbb << \"\\n\"\n" + " << \" cccccc = \" << pkt.cccccc << \"\\n\"\n" + " << \" ddd = [\" << pkt.ddd << \"]\\n\"\n" + " << \"}\";"); + + verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;"); + verifyFormat( + "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n" + " << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n" + " << \"ccccccccccccccccc = \" << ccccccccccccccccc\n" + " << \"ddddddddddddddddd = \" << ddddddddddddddddd\n" + " << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;"); + verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n" + " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); + verifyFormat( + "void f() {\n" + " llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" + "}"); + verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();"); + verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaa)\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat("LOG_IF(aaa == //\n" + " bbb)\n" + " << a << b;"); + + // Breaking before the first "<<" is generally not desirable. + verifyFormat( + "llvm::errs()\n" + " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", + getLLVMStyleWithColumns(70)); + verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << \"aaaaaaaaaaaaaaaaaaa: \"\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", + getLLVMStyleWithColumns(70)); + + // But sometimes, breaking before the first "<<" is desirable. + verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);"); + verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n" + " << BEF << IsTemplate << Description << E->getType();"); + + verifyFormat( + "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + + // Incomplete string literal. + EXPECT_EQ("llvm::errs() << \"\n" + " << a;", + format("llvm::errs() << \"\n<cccccc)\n" + " << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n" + "}"); + + // Handle 'endl'. + verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n" + " << bbbbbbbbbbbbbbbbbbbbbb << endl;"); + verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;"); + + // Handle '\n'. + verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \"\\n\"\n" + " << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";"); + verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \'\\n\'\n" + " << bbbbbbbbbbbbbbbbbbbbbb << \'\\n\';"); + verifyFormat("llvm::errs() << aaaa << \"aaaaaaaaaaaaaaaaaa\\n\"\n" + " << bbbb << \"bbbbbbbbbbbbbbbbbb\\n\";"); + verifyFormat("llvm::errs() << \"\\n\" << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";"); +} + +TEST_F(FormatTest, UnderstandsEquals) { + verifyFormat( + "aaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); + verifyFormat( + "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); + verifyFormat( + "if (a) {\n" + " f();\n" + "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" + "}"); + + verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" + " 100000000 + 10000000) {\n}"); +} + +TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) { + verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" + " .looooooooooooooooooooooooooooooooooooooongFunction();"); + + verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" + " ->looooooooooooooooooooooooooooooooooooooongFunction();"); + + verifyFormat( + "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n" + " Parameter2);"); + + verifyFormat( + "ShortObject->shortFunction(\n" + " LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n" + " LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);"); + + verifyFormat("loooooooooooooongFunction(\n" + " LoooooooooooooongObject->looooooooooooooooongFunction());"); + + verifyFormat( + "function(LoooooooooooooooooooooooooooooooooooongObject\n" + " ->loooooooooooooooooooooooooooooooooooooooongFunction());"); + + verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" + " .WillRepeatedly(Return(SomeValue));"); + verifyFormat("void f() {\n" + " EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" + " .Times(2)\n" + " .WillRepeatedly(Return(SomeValue));\n" + "}"); + verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n" + " ccccccccccccccccccccccc);"); + verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaa(aaaaa),\n" + " aaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("void f() {\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n" + "}"); + verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n" + "}"); + + // Here, it is not necessary to wrap at "." or "->". + verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n" + " aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); + verifyFormat( + "aaaaaaaaaaa->aaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n"); + + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());"); + verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n" + " aaaaaaaaa()->aaaaaa()->aaaaa());"); + verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n" + " aaaaaaaaa()->aaaaaa()->aaaaa());"); + + verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .a();"); + + FormatStyle NoBinPacking = getLLVMStyle(); + NoBinPacking.BinPackParameters = false; + verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", + NoBinPacking); + + // If there is a subsequent call, change to hanging indentation. + verifyFormat( + "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));"); + verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); + verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" + " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); +} + +TEST_F(FormatTest, WrapsTemplateDeclarations) { + verifyFormat("template \n" + "virtual void loooooooooooongFunction(int Param1, int Param2);"); + verifyFormat("template \n" + "// T should be one of {A, B}.\n" + "virtual void loooooooooooongFunction(int Param1, int Param2);"); + verifyFormat( + "template \n" + "using comment_to_xml_conversion = comment_to_xml_conversion;"); + verifyFormat("template \n" + "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n" + " int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);"); + verifyFormat( + "template \n" + "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n" + " int Paaaaaaaaaaaaaaaaaaaaram2);"); + verifyFormat( + "template \n" + "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaa,\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat("template \n" + "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " int aaaaaaaaaaaaaaaaaaaaaa);"); + verifyFormat( + "template \n" + "void f();"); + verifyFormat("template class cccccccccccccccccccccc,\n" + " typename ddddddddddddd>\n" + "class C {};"); + verifyFormat( + "aaaaaaaaaaaaaaaaaaaaaaaa(\n" + " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); + + verifyFormat("void f() {\n" + " a(\n" + " a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n" + "}"); + + verifyFormat("template class C {};"); + verifyFormat("template void f();"); + verifyFormat("template void f() {}"); + verifyFormat( + "aaaaaaaaaaaaa *aaaa =\n" + " new aaaaaaaaaaaaa(\n" + " bbbbbbbbbbbbbbbbbbbbbbbb);", + getLLVMStyleWithColumns(72)); + EXPECT_EQ("static_cast *>(\n" + "\n" + " );", + format("static_cast*>(\n" + "\n" + " );")); + verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" + " const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);"); + + FormatStyle AlwaysBreak = getLLVMStyle(); + AlwaysBreak.AlwaysBreakTemplateDeclarations = true; + verifyFormat("template \nclass C {};", AlwaysBreak); + verifyFormat("template \nvoid f();", AlwaysBreak); + verifyFormat("template \nvoid f() {}", AlwaysBreak); + verifyFormat("void aaaaaaaaaaaaaaaaaaa(\n" + " ccccccccccccccccccccccccccccccccccccccccccccccc);"); + verifyFormat("template