[clang] [clang-format] js handle anonymous classes (PR #106242)
Krasimir Georgiev via cfe-commits
cfe-commits at lists.llvm.org
Wed Aug 28 01:05:20 PDT 2024
https://github.com/krasimirgg updated https://github.com/llvm/llvm-project/pull/106242
>From 32e94bde5a8ed401a9fb1255d8394c552da82dd7 Mon Sep 17 00:00:00 2001
From: Krasimir Georgiev <krasimir at google.com>
Date: Tue, 27 Aug 2024 16:08:07 +0000
Subject: [PATCH 1/3] [clang-format] js handle anonymous classes
Addresses a regression in JavaScript when formatting anonymous classes.
---
clang/lib/Format/UnwrappedLineParser.cpp | 6 +++++-
clang/unittests/Format/FormatTestJS.cpp | 9 +++++++++
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 5f1a88d4bcd729..7591eaeae461a7 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -3992,6 +3992,9 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
auto IsNonMacroIdentifier = [](const FormatToken *Tok) {
return Tok->is(tok::identifier) && Tok->TokenText != Tok->TokenText.upper();
};
+ // JavaScript/TypeScript supports anonymous classes like:
+ // a = class extends foo { }
+ bool JSPastExtendsOrImplements = false;
// The actual identifier can be a nested name specifier, and in macros
// it is often token-pasted.
// An [[attribute]] can be before the identifier.
@@ -4002,6 +4005,7 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
FormatTok->isOneOf(tok::period, tok::comma))) {
if (Style.isJavaScript() &&
FormatTok->isOneOf(Keywords.kw_extends, Keywords.kw_implements)) {
+ JSPastExtendsOrImplements = true;
// JavaScript/TypeScript supports inline object types in
// extends/implements positions:
// class Foo implements {bar: number} { }
@@ -4027,7 +4031,7 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
case tok::coloncolon:
break;
default:
- if (!ClassName && Previous->is(tok::identifier) &&
+ if (!JSPastExtendsOrImplements && !ClassName && Previous->is(tok::identifier) &&
Previous->isNot(TT_AttributeMacro)) {
ClassName = Previous;
}
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index b910ce620de7a9..734c1590c41ddb 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -579,6 +579,15 @@ TEST_F(FormatTestJS, GoogScopes) {
"});");
}
+TEST_F(FormatTestJS, GoogAnonymousClass) {
+ verifyFormat("a = class extends goog.structs.a {\n"
+ " a() {\n"
+ " return 0;\n"
+ " }\n"
+ "};");
+}
+
+
TEST_F(FormatTestJS, IIFEs) {
// Internal calling parens; no semi.
verifyFormat("(function() {\n"
>From f42f5d46ba41dc679e42fc50850aa8a6b46c9459 Mon Sep 17 00:00:00 2001
From: Krasimir Georgiev <krasimir at google.com>
Date: Tue, 27 Aug 2024 16:58:48 +0000
Subject: [PATCH 2/3] fix formatting
---
clang/lib/Format/UnwrappedLineParser.cpp | 4 ++--
clang/unittests/Format/FormatTestJS.cpp | 1 -
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 7591eaeae461a7..506386526bd15f 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -4031,8 +4031,8 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
case tok::coloncolon:
break;
default:
- if (!JSPastExtendsOrImplements && !ClassName && Previous->is(tok::identifier) &&
- Previous->isNot(TT_AttributeMacro)) {
+ if (!JSPastExtendsOrImplements && !ClassName &&
+ Previous->is(tok::identifier) && Previous->isNot(TT_AttributeMacro)) {
ClassName = Previous;
}
}
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index 734c1590c41ddb..4b29ba720f6823 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -587,7 +587,6 @@ TEST_F(FormatTestJS, GoogAnonymousClass) {
"};");
}
-
TEST_F(FormatTestJS, IIFEs) {
// Internal calling parens; no semi.
verifyFormat("(function() {\n"
>From 8283b7f9bb422c9692ffa83c034dcab8aee41a9a Mon Sep 17 00:00:00 2001
From: Krasimir Georgiev <krasimir at google.com>
Date: Wed, 28 Aug 2024 08:04:46 +0000
Subject: [PATCH 3/3] add a token annotator test
---
clang/unittests/Format/TokenAnnotatorTest.cpp | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index db44d418a84484..04a9fa760ce878 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -3238,6 +3238,12 @@ TEST_F(TokenAnnotatorTest, BraceKind) {
EXPECT_BRACE_KIND(Tokens[8], BK_BracedInit);
EXPECT_BRACE_KIND(Tokens[11], BK_BracedInit);
EXPECT_BRACE_KIND(Tokens[13], BK_Block);
+
+ Tokens = annotate("a = class extends goog.a {}",
+ getGoogleStyle(FormatStyle::LanguageKind::LK_JavaScript));
+ ASSERT_EQ(Tokens.size(), 10u) << Tokens;
+ EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_ClassLBrace);
+ EXPECT_BRACE_KIND(Tokens[7], BK_Block);
}
TEST_F(TokenAnnotatorTest, UnderstandsElaboratedTypeSpecifier) {
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