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author | Shugo Maeda <shugo@ruby-lang.org> | 2021-09-11 18:49:12 +0900 |
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committer | Shugo Maeda <shugo@ruby-lang.org> | 2021-09-11 18:52:25 +0900 |
commit | c60dbcd1c55cd77a24c41d5e1a9555622be8b2b8 (patch) | |
tree | 318d03414f630b0d31cbaf48a740965af4dd4615 | |
parent | 64e056a4c5d4595cd2c36aabc747cca32f4b5395 (diff) | |
download | ruby-c60dbcd1c55cd77a24c41d5e1a9555622be8b2b8.tar.gz |
Allow value omission in Hash literals
`{x:, y:}` is a syntax sugar of `{x: x, y: y}`.
-rw-r--r-- | parse.y | 9 | ||||
-rw-r--r-- | test/ruby/test_hash.rb | 17 |
2 files changed, 26 insertions, 0 deletions
@@ -5617,6 +5617,15 @@ assoc : arg_value tASSOC arg_value /*% %*/ /*% ripper: assoc_new!($1, $2) %*/ } + | tLABEL + { + /*%%%*/ + NODE *val = gettable(p, $1, &@$); + if (!val) val = NEW_BEGIN(0, &@$); + $$ = list_append(p, NEW_LIST(NEW_LIT(ID2SYM($1), &@1), &@$), val); + /*% %*/ + /*% ripper: assoc_new!($1, id_is_var(p, get_id($1)) ? var_ref!($1) : vcall!($1)) %*/ + } | tSTRING_BEG string_contents tLABEL_END arg_value { /*%%%*/ diff --git a/test/ruby/test_hash.rb b/test/ruby/test_hash.rb index f79879c20a..5aee1b5d5c 100644 --- a/test/ruby/test_hash.rb +++ b/test/ruby/test_hash.rb @@ -2178,4 +2178,21 @@ class TestHash < Test::Unit::TestCase end; end end + + def test_value_omission + x = 1 + y = 2 + assert_equal({x: 1, y: 2}, {x:, y:}) + assert_equal({one: 1, two: 2}, {one:, two:}) + end + + private + + def one + 1 + end + + def two + 2 + end end |