https://github.com/rymiel updated https://github.com/llvm/llvm-project/pull/110942
>From ef604d0bd621cfef32a8dd4b5410bd530ed2fe80 Mon Sep 17 00:00:00 2001 From: Emilia Kond <emilia@rymiel.space> Date: Thu, 3 Oct 2024 03:06:10 +0300 Subject: [PATCH 1/2] [clang-format] Make some binary operations imply requires clause This patch adjusts the requires clause/expression lookahead heuristic to assume that some binary operation mean that the requires keyword refers to a clause. This partially reverts the removed case clauses from 9b68c095d6b52d6ec0390c653528f65c42e5f570, with an additional check that we're not in a type parameter. This is quite a band-aid fix, it may be worth it to rewrite that whole heuristic to track more state in the future, instead of just blindly marching forward across multiple unrelated definitions, since right now, the definition following the one with the requires clause can influence whether the heuristic chooses clause or expression. Fixes https://github.com/llvm/llvm-project/issues/110485 --- clang/lib/Format/UnwrappedLineParser.cpp | 11 +++++++++++ clang/unittests/Format/TokenAnnotatorTest.cpp | 15 +++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp index 40f77266fabdca..98078fb50dcfaa 100644 --- a/clang/lib/Format/UnwrappedLineParser.cpp +++ b/clang/lib/Format/UnwrappedLineParser.cpp @@ -3528,6 +3528,17 @@ bool UnwrappedLineParser::parseRequires() { return false; } break; + case tok::equalequal: + case tok::greaterequal: + case tok::lessequal: + case tok::r_paren: + case tok::pipepipe: + if (OpenAngles == 0) { + FormatTok = Tokens->setPosition(StoredPosition); + parseRequiresClause(RequiresToken); + return true; + } + break; case tok::eof: // Break out of the loop. Lookahead = 50; diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp index 1884d41a5f23f5..6f1b1df0bda655 100644 --- a/clang/unittests/Format/TokenAnnotatorTest.cpp +++ b/clang/unittests/Format/TokenAnnotatorTest.cpp @@ -1296,6 +1296,21 @@ TEST_F(TokenAnnotatorTest, UnderstandsRequiresClausesAndConcepts) { Tokens = annotate("bool x = t && requires(Foo<C1 || C2> x) { x.foo(); };"); ASSERT_EQ(Tokens.size(), 25u) << Tokens; EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresExpression); + + // Second function definition is required due to lookahead + Tokens = annotate("void f() & requires(n == 1) {}\nvoid g();"); + ASSERT_EQ(Tokens.size(), 19u) << Tokens; + EXPECT_TOKEN(Tokens[4], tok::amp, TT_PointerOrReference); + EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); + + Tokens = annotate("void f() & requires(n || h) {}\nvoid g();"); + ASSERT_EQ(Tokens.size(), 19u) << Tokens; + EXPECT_TOKEN(Tokens[4], tok::amp, TT_PointerOrReference); + EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); + + Tokens = annotate("bool x = t && requires(F<n == 1> x) { x.foo(); };"); + ASSERT_EQ(Tokens.size(), 25u) << Tokens; + EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresExpression); } TEST_F(TokenAnnotatorTest, UnderstandsRequiresExpressions) { >From 64b9240349f07729de3700eb4a9c43fc135e38ed Mon Sep 17 00:00:00 2001 From: Emilia Kond <emilia@rymiel.space> Date: Thu, 10 Oct 2024 16:09:43 +0300 Subject: [PATCH 2/2] Reduce scope of PR --- clang/lib/Format/UnwrappedLineParser.cpp | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp index 98078fb50dcfaa..b051994c800494 100644 --- a/clang/lib/Format/UnwrappedLineParser.cpp +++ b/clang/lib/Format/UnwrappedLineParser.cpp @@ -3470,10 +3470,10 @@ bool UnwrappedLineParser::parseRequires() { case tok::r_paren: case tok::kw_noexcept: case tok::kw_const: + case tok::amp: // This is a requires clause. parseRequiresClause(RequiresToken); return true; - case tok::amp: case tok::ampamp: { // This can be either: // if (... && requires (T t) ...) @@ -3528,17 +3528,6 @@ bool UnwrappedLineParser::parseRequires() { return false; } break; - case tok::equalequal: - case tok::greaterequal: - case tok::lessequal: - case tok::r_paren: - case tok::pipepipe: - if (OpenAngles == 0) { - FormatTok = Tokens->setPosition(StoredPosition); - parseRequiresClause(RequiresToken); - return true; - } - break; case tok::eof: // Break out of the loop. Lookahead = 50; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
