diff options
Diffstat (limited to 'lib/tools/emacs')
| -rw-r--r-- | lib/tools/emacs/erlang.el | 58 | ||||
| -rw-r--r-- | lib/tools/emacs/test.erl.indented | 38 | ||||
| -rw-r--r-- | lib/tools/emacs/test.erl.orig | 38 |
3 files changed, 122 insertions, 12 deletions
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el index bc7a190fb4..2f6c7f554e 100644 --- a/lib/tools/emacs/erlang.el +++ b/lib/tools/emacs/erlang.el @@ -2986,18 +2986,52 @@ This assumes that the preceding expression is either simple (forward-sexp (- arg)) (let ((col (current-column))) (skip-chars-backward " \t") - ;; Needed to match the colon in "'foo':'bar'". - (if (not (memq (preceding-char) '(?# ?:))) - col - ;; Special hack to handle: (note line break) - ;; [#myrecord{ - ;; foo = foo}] - (or - (ignore-errors - (backward-char 1) - (forward-sexp -1) - (current-column)) - col))))) + ;; Special hack to handle: (note line break) + ;; [#myrecord{ + ;; foo = foo}] + ;; where the call (forward-sexp -1) will fail when point is at the `#'. + (or + (ignore-errors + ;; Needed to match the colon in "'foo':'bar'". + (cond ((eq (preceding-char) ?:) + (backward-char 1) + (forward-sexp -1) + (current-column)) + ((eq (preceding-char) ?#) + ;; We may now be at: + ;; - either a construction of a new record + ;; - or update of a record, in which case we want + ;; the column of the expression to be updated. + ;; + ;; To see which of the two cases we are at, we first + ;; move an expression backwards, check for keywords, + ;; then immediately an expression forwards. Moving + ;; backwards skips past tokens like `,' or `->', but + ;; when moving forwards again, we won't skip past such + ;; tokens. We use this: if, after having moved + ;; forwards, we're back where we started, then it was + ;; a record update. + ;; The check for keywords is to detect cases like: + ;; case Something of #record_construction{...} + (backward-char 1) + (let ((record-start (point)) + (record-start-col (current-column))) + (forward-sexp -1) + (let ((preceding-expr-col (current-column)) + ;; white space definition according to erl_scan + (white-space "\000-\040\200-\240")) + (if (erlang-at-keyword) + ;; The (forward-sexp -1) call moved past a keyword + (1+ record-start-col) + (forward-sexp 1) + (skip-chars-forward white-space record-start) + ;; Are we back where we started? If so, it was an update. + (if (= (point) record-start) + preceding-expr-col + (goto-char record-start) + (1+ (current-column))))))) + (t col))) + col)))) (defun erlang-indent-parenthesis (stack-position) (let ((previous (erlang-indent-find-preceding-expr))) diff --git a/lib/tools/emacs/test.erl.indented b/lib/tools/emacs/test.erl.indented index 2948ccf1b5..e0593c6522 100644 --- a/lib/tools/emacs/test.erl.indented +++ b/lib/tools/emacs/test.erl.indented @@ -657,3 +657,41 @@ indent_comprehensions() -> foo() -> [#foo{ foo = foo}]. + +%% Record indentation +some_function_with_a_very_long_name() -> + #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b}, + case dummy_function_with_a_very_very_long_name(x) of + #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b} -> + ok; + Var = #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b} -> + Var#'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b}; + #xyz{ + a=1, + b=2} -> + ok + end. + +another_function_with_a_very_very_long_name() -> + #rec{ + field1=1, + field2=1}. + +some_function_name_xyz(xyzzy, #some_record{ + field1=Field1, + field2=Field2}) -> + SomeVariable = f(#'Some-long-record-name'{ + field_a = 1, + 'inter-xyz-parameters' = + #'Some-other-very-long-record-name'{ + field2 = Field1, + field2 = Field2}}), + {ok, SomeVariable}. diff --git a/lib/tools/emacs/test.erl.orig b/lib/tools/emacs/test.erl.orig index 1221c5655e..69356aca9e 100644 --- a/lib/tools/emacs/test.erl.orig +++ b/lib/tools/emacs/test.erl.orig @@ -657,3 +657,41 @@ ok. foo() -> [#foo{ foo = foo}]. + +%% Record indentation +some_function_with_a_very_long_name() -> + #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b}, + case dummy_function_with_a_very_very_long_name(x) of + #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b} -> + ok; + Var = #'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b} -> + Var#'a-long-record-name-like-it-sometimes-is-with-asn.1-records'{ + field1=a, + field2=b}; + #xyz{ + a=1, + b=2} -> + ok + end. + +another_function_with_a_very_very_long_name() -> + #rec{ + field1=1, + field2=1}. + +some_function_name_xyz(xyzzy, #some_record{ + field1=Field1, + field2=Field2}) -> + SomeVariable = f(#'Some-long-record-name'{ + field_a = 1, + 'inter-xyz-parameters' = + #'Some-other-very-long-record-name'{ + field2 = Field1, + field2 = Field2}}), + {ok, SomeVariable}. |