1 files changed, 17 insertions, 0 deletions
diff --git a/clang/lib/Format/FormatTokenLexer.cpp b/clang/lib/Format/FormatTokenLexer.cpp
index e59a059fd6b..5d8a77577c0 100644
--- a/clang/lib/Format/FormatTokenLexer.cpp
+++ b/clang/lib/Format/FormatTokenLexer.cpp
@@ -80,6 +80,8 @@ void FormatTokenLexer::tryMergePreviousTokens() {
       return;
     if (tryMergeCSharpNullConditionals())
       return;
+    if (tryTransformCSharpForEach())
+      return;
     static const tok::TokenKind JSRightArrow[] = {tok::equal, tok::greater};
     if (tryMergeTokens(JSRightArrow, TT_JsFatArrow))
       return;
@@ -254,6 +256,21 @@ bool FormatTokenLexer::tryMergeCSharpNullConditionals() {
   return true;
 }
 
+// In C# transform identifier foreach into kw_foreach
+bool FormatTokenLexer::tryTransformCSharpForEach() {
+  if (Tokens.size() < 1)
+    return false;
+  auto &Identifier = *(Tokens.end() - 1);
+  if (!Identifier->is(tok::identifier))
+    return false;
+  if (Identifier->TokenText != "foreach")
+    return false;
+
+  Identifier->Type = TT_ForEachMacro;
+  Identifier->Tok.setKind(tok::kw_for);
+  return true;
+}
+
 bool FormatTokenLexer::tryMergeLessLess() {
   // Merge X,less,less,Y into X,lessless,Y unless X or Y is less.
   if (Tokens.size() < 3)