Retain attribute on pexp_setinstvar#1288
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Julow merged 5 commits intoocaml-ppx:masterfrom Mar 19, 2020
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The unnecessary parentheses mentioned here are removed as a side-effect of #1291. |
Julow
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Mar 19, 2020
| ; _ } | ||
| , _ ) -> | ||
| false | ||
| | Exp {pexp_desc= Pexp_object _; _}, _ -> false |
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Could you add a small comment explaining why we have this pattern ?
| (* some comment *) | ||
| method! x = 2 [@@attr] | ||
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| method x = (1 [@attr]) |
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These parentheses are not necessary.
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It does not, only those on the LHS of sequences will be, i.e.
method a = (0 [@attr]) ; 1
let _ = (0 [@attr]) ; 1ed75834 to
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Let's merge ! |
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CHANGES: #### New features + Add an option `--format-invalid-files` to print unparsable parts of the input as verbatim text. This feature is still experimental. (ocaml-ppx/ocamlformat#1026) (Guillaume Petiot) + Support multi-indices extended indexing operators (ocaml-ppx/ocamlformat#1279, ocaml-ppx/ocamlformat#1277) (Jules Aguillon, Guillaume Petiot) This feature has been added in OCaml 4.10.0 + Handle OCaml 4.10.0 AST (ocaml-ppx/ocamlformat#1276) (Guillaume Petiot) + Preserve functor syntax for consistency (ocaml-ppx/ocamlformat#1312) (Guillaume Petiot) Previously both functor syntax: `module M = functor (K : S) -> struct end` and `module M (K : S) = struct end` would be formatted as the latter, the original syntax is now preserved. #### Changes + Add the option `doc-comments-val=before|after` (ocaml-ppx/ocamlformat#1012) (Jules Aguillon) This option set the placement of documentation comment on `val` and `external` only. It is set to `after` by default. + The default for `doc-comments` is changed from `after` to `before` (ocaml-ppx/ocamlformat#1012, ocaml-ppx/ocamlformat#1325) (Jules Aguillon) This affects both `conventional` (default) and `ocamlformat` profiles. + Some options are now deprecated: * `doc-comments` (ocaml-ppx/ocamlformat#1293, ocaml-ppx/ocamlformat#1012) This option depends on a flawed heuristic. It is replaced by `doc-comments-val` for `val` and `external` declarations. There is no equivalent to this option in the general case. * `escape-chars`, `escape-strings` and `extension-sugar` (ocaml-ppx/ocamlformat#1293) These options are rarely used and their default behavior is considered to be the right behavior. + Add space between `row_field` attributes and the label or arguments, to be consistent with the non-polymorphic case. (ocaml-ppx/ocamlformat#1299) (Craig Ferguson) #### Bug fixes + Fix missing parentheses around `let open` (ocaml-ppx/ocamlformat#1229) (Jules Aguillon) eg. `M.f (M.(x) [@attr])` would be formatted to `M.f M.(x) [@attr]`, which would crash OCamlformat + Remove unecessary parentheses with attributes in some structure items: * extensions and eval items (ocaml-ppx/ocamlformat#1230) (Jules Aguillon) eg. the expression `[%ext (() [@attr])]` or the structure item `(() [@attr]) ;;` * `let _ = ...` constructs (ocaml-ppx/ocamlformat#1244) (Etienne Millon) + Fix some bugs related to comments: * after a function on the rhs of an infix (ocaml-ppx/ocamlformat#1231) (Jules Aguillon) eg. the comment in `(x >>= fun y -> y (* A *))` would be dropped * in module unpack (ocaml-ppx/ocamlformat#1309) (Jules Aguillon) eg. in the module expression `module M = (val x : S (* A *))` + Fix formatting of empty signature payload `[%a:]` (ocaml-ppx/ocamlformat#1236) (Etienne Millon) + Fix parenthesizing when accessing field of construct application (ocaml-ppx/ocamlformat#1247) (Guillaume Petiot) + Fix formatting of attributes on object overrides `{< >}` (ocaml-ppx/ocamlformat#1238) (Etienne Millon) + Fix attributes on coercion (ocaml-ppx/ocamlformat#1239) (Etienne Millon) + Fix formatting of attributes on packed modules (ocaml-ppx/ocamlformat#1243) (Etienne Millon) + Fix parens around binop operations with attributes (ocaml-ppx/ocamlformat#1252, ocaml-ppx/ocamlformat#1306) (Guillaume Petiot, Craig Ferguson) + Remove unecessary parentheses in the argument of indexing operators (ocaml-ppx/ocamlformat#1280) (Jules Aguillon) + Retain attributes on various AST nodes: * field set expressions, e.g. `(a.x <- b) [@A]` (ocaml-ppx/ocamlformat#1284) (Craig Ferguson) * instance variable set expressions, e.g. `(a <- b) [@A]` (ocaml-ppx/ocamlformat#1288) (Craig Ferguson) * indexing operators, e.g. `(a.(b)) [@A]` (ocaml-ppx/ocamlformat#1300) (Craig Ferguson) * sequences, e.g. `(a; b) [@A]` (ocaml-ppx/ocamlformat#1291) (Craig Ferguson) + Avoid unnecessary spacing after object types inside records and polymorphic variants, e.g. `{foo : < .. > [@A]}` and `{ foo : < .. > }` (ocaml-ppx/ocamlformat#1296) (Craig Ferguson) + Fix missing parentheses around tuples with attributes. (ocaml-ppx/ocamlformat#1301) (Craig Ferguson) Previously, `f ((0, 0) [@A])` would be formatted to `f (0, 0) [@A]`, crashing OCamlformat. + Avoid emitting `>]` when an object type is contained in an extension point or attribute payload (ocaml-ppx/ocamlformat#1298) (Craig Ferguson) + Fix crash on the expression `(0).*(0)` (ocaml-ppx/ocamlformat#1304) (Jules Aguillon) It was formatting to `0.*(0)` which parses as an other expression. + Preserve empty doc-comments syntax. (ocaml-ppx/ocamlformat#1311) (Guillaume Petiot) Previously `(**)` would be formatted to `(***)`. + Do not crash when a comment contains just a newline (ocaml-ppx/ocamlformat#1290) (Etienne Millon) + Handle lazy patterns as arguments to `class` (ocaml-ppx/ocamlformat#1289) (Etienne Millon) + Preserve cinaps comments containing unparsable code (ocaml-ppx/ocamlformat#1303) (Jules Aguillon) Previously, OCamlformat would fallback to the "wrapping" logic, making the comment unreadable and crashing in some cases. + Fix normalization of attributes, fixing the docstrings in attributes (ocaml-ppx/ocamlformat#1314) (Guillaume Petiot) + Add missing parentheses around OR-patterns with attributes (ocaml-ppx/ocamlformat#1317) (Guillaume Petiot) + Fix spacing inside parens for symbols when the spacing was handled by the englobing exp (ocaml-ppx/ocamlformat#1316) (Guillaume Petiot) + Fix invalid (unparsable) docstrings (ocaml-ppx/ocamlformat#1315) (Guillaume Petiot) When parsing a comment raises an error in odoc, it is printed as-is. + Fix parenthesizing of optional arguments rebound to non-variables, e.g. `let f ?a:(A) = ()` rather than the unparsable `let f ?a:A = ()` (ocaml-ppx/ocamlformat#1305) (Craig Ferguson)
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This attempts to resolve #1258.
It's unecessary to wrap
(a <- b) [@a]in parentheses if the expression is the only one in a module definition.I discovered and tested a few unnecessary parentheses in the process:
method a = (1 [@attr])method a = (0 [@attr]) ; 1let _ = (0 [@attr]) ; 1(edit: now tested by Retain attribute on pexp_sequence #1291 instead)We may want to keep these for disambiguation purposes, but it seems better to have them tested regardless.