[clang] 36a8f7f - [clang-format] Handle escaped " in C# string-literals
Krasimir Georgiev via cfe-commits
cfe-commits at lists.llvm.org
Mon Jan 27 03:58:01 PST 2020
Author: Krasimir Georgiev
Date: 2020-01-27T12:57:20+01:00
New Revision: 36a8f7f6d8f5a9620b1a091e54abacb517ecfbba
URL: https://github.com/llvm/llvm-project/commit/36a8f7f6d8f5a9620b1a091e54abacb517ecfbba
DIFF: https://github.com/llvm/llvm-project/commit/36a8f7f6d8f5a9620b1a091e54abacb517ecfbba.diff
LOG: [clang-format] Handle escaped " in C# string-literals
Reviewers: krasimir
Reviewed By: krasimir
Subscribers: klimek, MyDeveloperDay
Tags: #clang-format
Differential Revision: https://reviews.llvm.org/D73353
Added:
Modified:
clang/lib/Format/FormatTokenLexer.cpp
clang/unittests/Format/FormatTestCSharp.cpp
Removed:
################################################################################
diff --git a/clang/lib/Format/FormatTokenLexer.cpp b/clang/lib/Format/FormatTokenLexer.cpp
index 9c9fee2b0c32..d8dfe17fb89c 100644
--- a/clang/lib/Format/FormatTokenLexer.cpp
+++ b/clang/lib/Format/FormatTokenLexer.cpp
@@ -184,15 +184,33 @@ bool FormatTokenLexer::tryMergeJSPrivateIdentifier() {
bool FormatTokenLexer::tryMergeCSharpVerbatimStringLiteral() {
if (Tokens.size() < 2)
return false;
- auto &At = *(Tokens.end() - 2);
+
auto &String = *(Tokens.end() - 1);
+ if (!String->is(tok::string_literal))
+ return false;
+
+ // verbatim strings could contain "" which C# sees as an escaped ".
+ // @"""Hello""" will have been tokenized as @"" "Hello" "" and needs
+ // merging into a single string literal.
+ auto &CSharpStringLiteral = *(Tokens.end() - 2);
+ if (CSharpStringLiteral->Type == TT_CSharpStringLiteral &&
+ (CSharpStringLiteral->TokenText.startswith(R"(@")") ||
+ CSharpStringLiteral->TokenText.startswith(R"($@")"))) {
+ CSharpStringLiteral->TokenText = StringRef(
+ CSharpStringLiteral->TokenText.begin(),
+ String->TokenText.end() - CSharpStringLiteral->TokenText.begin());
+ CSharpStringLiteral->ColumnWidth += String->ColumnWidth;
+ Tokens.erase(Tokens.end() - 1);
+ return true;
+ }
+
+ auto &At = *(Tokens.end() - 2);
- // Look for $"aaaaaa" @"aaaaaa".
- if (!(At->is(tok::at) || At->TokenText == "$") ||
- !String->is(tok::string_literal))
+ // Look for @"aaaaaa" or $"aaaaaa".
+ if (!(At->is(tok::at) || At->TokenText == "$"))
return false;
- if (Tokens.size() >= 2 && At->is(tok::at)) {
+ if (Tokens.size() > 2 && At->is(tok::at)) {
auto &Dollar = *(Tokens.end() - 3);
if (Dollar->TokenText == "$") {
// This looks like $@"aaaaa" so we need to combine all 3 tokens.
diff --git a/clang/unittests/Format/FormatTestCSharp.cpp b/clang/unittests/Format/FormatTestCSharp.cpp
index 90d05ad679a7..f777d319ea40 100644
--- a/clang/unittests/Format/FormatTestCSharp.cpp
+++ b/clang/unittests/Format/FormatTestCSharp.cpp
@@ -409,5 +409,13 @@ TEST_F(FormatTestCSharp, CSharpSpaceAfterCStyleCast) {
verifyFormat("(int) x / y;", Style);
}
+TEST_F(FormatTestCSharp, CSharpEscapedQuotesInVerbatimStrings) {
+ FormatStyle Style = getGoogleStyle(FormatStyle::LK_CSharp);
+
+ verifyFormat(R"(string str = @"""")", Style);
+ verifyFormat(R"(string str = @"""Hello world""")", Style);
+ verifyFormat(R"(string str = $@"""Hello {friend}""")", Style);
+}
+
} // namespace format
} // end namespace clang
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