[PATCH] D69649: [clang-format] Fix SpacesInSquareBrackets for Lambdas with Initial "&ref" Parameter

[Mitchell via Phabricator via cfe-commits]

mitchell-stellar created this revision.
mitchell-stellar added reviewers: MyDeveloperDay, klimek, sammccall.
mitchell-stellar added a project: clang-format.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

This patch fixes an edge case in the `SpacesInSquareBrackets` option where an 
initial `&ref` lambda parameter is not padded with an initial space.

`int foo = [&bar ]() {}` is fixed to give `int foo = [ &bar ]() {}`


Repository:
  rC Clang

https://reviews.llvm.org/D69649

Files:
  clang/lib/Format/TokenAnnotator.cpp
  clang/unittests/Format/FormatTest.cpp


Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -10572,6 +10572,10 @@
   // Lambdas.
   verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
   verifyFormat("return [ i, args... ] {};", Spaces);
+  verifyFormat("int foo = [ &bar ]() {};", Spaces);
+  verifyFormat("int foo = [ = ]() {};", Spaces);
+  verifyFormat("int foo = [ =, &bar ]() {};", Spaces);
+  verifyFormat("int foo = [ &bar, = ]() {};", Spaces);
 }
 
 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -2567,7 +2567,7 @@
     return Left.Tok.isLiteral() || (Left.is(tok::identifier) && Left.Previous 
&&
                                     Left.Previous->is(tok::kw_case));
   if (Left.is(tok::l_square) && Right.is(tok::amp))
-    return false;
+    return Style.SpacesInSquareBrackets;
   if (Right.is(TT_PointerOrReference)) {
     if (Left.is(tok::r_paren) && Line.MightBeFunctionDecl) {
       if (!Left.MatchingParen)



Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -10572,6 +10572,10 @@
   // Lambdas.
   verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
   verifyFormat("return [ i, args... ] {};", Spaces);
+  verifyFormat("int foo = [ &bar ]() {};", Spaces);
+  verifyFormat("int foo = [ = ]() {};", Spaces);
+  verifyFormat("int foo = [ =, &bar ]() {};", Spaces);
+  verifyFormat("int foo = [ &bar, = ]() {};", Spaces);
 }
 
 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -2567,7 +2567,7 @@
     return Left.Tok.isLiteral() || (Left.is(tok::identifier) && Left.Previous &&
                                     Left.Previous->is(tok::kw_case));
   if (Left.is(tok::l_square) && Right.is(tok::amp))
-    return false;
+    return Style.SpacesInSquareBrackets;
   if (Right.is(TT_PointerOrReference)) {
     if (Left.is(tok::r_paren) && Line.MightBeFunctionDecl) {
       if (!Left.MatchingParen)

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