diff options
Diffstat (limited to 'lib/diameter/src/compiler/diameter_exprecs.erl')
| -rw-r--r-- | lib/diameter/src/compiler/diameter_exprecs.erl | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/lib/diameter/src/compiler/diameter_exprecs.erl b/lib/diameter/src/compiler/diameter_exprecs.erl index 191f53f29d..b5149aa324 100644 --- a/lib/diameter/src/compiler/diameter_exprecs.erl +++ b/lib/diameter/src/compiler/diameter_exprecs.erl @@ -18,7 +18,7 @@ %% %% -%% Parse transform for generating record access functions +%% Parse transform for generating record access functions. %% %% This parse transform can be used to reduce compile-time %% dependencies in large systems. @@ -39,21 +39,21 @@ %% %% export_records([RecName, ...]) %% -%% causes this transform to lay out access functions for the exported -%% records: +%% causes this transform to insert functions for the exported records: %% %% -module(foo) %% -compile({parse_transform, diameter_exprecs}). %% %% -record(r, {a, b, c}). -%% -export_records([a]). +%% -export_records([r]). %% %% -export(['#info-'/1, '#info-'/2, -%% '#new-'/1, '#new-'/2, -%% '#get-'/2, '#set-'/2, -%% '#new-a'/0, '#new-a'/1, -%% '#get-a'/2, '#set-a'/2, -%% '#info-a'/1]). +%% '#new-'/1, '#new-'/2, +%% '#get-'/1', '#get-'/2, +%% '#set-'/2, +%% '#new-r'/0, '#new-r'/1, +%% '#get-r'/2, '#set-r'/2, +%% '#info-r'/1]). %% %% '#info-'(RecName) -> %% '#info-'(RecName, fields). @@ -67,9 +67,15 @@ %% '#new-r'() -> #r{}. %% '#new-r'(Vals) -> '#set-r'(Vals, #r{}). %% +%% '#get-'(#r{} = Rec) -> +%% [r | '#get-r'(Rec)]. +%% %% '#get-'(Attrs, #r{} = Rec) -> %% '#get-r'(Attrs, Rec). %% +%% '#get-r'(#r{} = Rec) -> +%% lists:zip([a,b,c], tl(tuple_to_list(Rec))). +%% %% '#get-r'(Attrs, Rec) when is_list(Attrs) -> %% ['#get-r'(A, Rec) || A <- Attrs]; %% '#get-r'(a, Rec) -> Rec#r.a; @@ -116,6 +122,7 @@ a_export(Exports) -> {fname(info), 2}, {fname(new), 1}, {fname(new), 2}, + {fname(get), 1}, {fname(get), 2}, {fname(set), 2} | lists:flatmap(fun export/1, Exports)]}. @@ -124,6 +131,7 @@ export(Rname) -> New = fname(new, Rname), [{New, 0}, {New, 1}, + {fname(get, Rname), 1}, {fname(get, Rname), 2}, {fname(set, Rname), 2}, {fname(info, Rname), 1}]. @@ -135,6 +143,7 @@ f_accessors(Es, Rs) -> '#info-/2'(Es), '#new-/1'(Es), '#new-/2'(Es), + '#get-/1'(Es), '#get-/2'(Es), '#set-/2'(Es) | lists:flatmap(fun(N) -> accessors(N, fields(N, Rs)) end, Es)]. @@ -142,6 +151,7 @@ f_accessors(Es, Rs) -> accessors(Rname, Fields) -> ['#new-X/0'(Rname), '#new-X/1'(Rname), + '#get-X/1'(Rname, Fields), '#get-X/2'(Rname, Fields), '#set-X/2'(Rname, Fields), '#info-X/1'(Rname, Fields)]. @@ -199,6 +209,15 @@ fname(Op, Rname) -> [], [?CALL(fname(new, R), [?VAR('Vals')])]}. +'#get-/1'(Exports) -> + {?function, fname(get), 1, + lists:map(fun 'get--'/1, Exports) ++ [?BADARG(1)]}. + +'get--'(R) -> + {?clause, [{?match, {?record, R, []}, ?VAR('Rec')}], + [], + [{?cons, ?ATOM(R), ?CALL(fname(get, R), [?VAR('Rec')])}]}. + '#get-/2'(Exports) -> {?function, fname(get), 2, lists:map(fun 'get-'/1, Exports) ++ [?BADARG(2)]}. @@ -245,6 +264,14 @@ fname(Op, Rname) -> [{?record, ?VAR('Rec'), Rname, [{?record_field, ?ATOM(Attr), ?VAR('V')}]}]}. +'#get-X/1'(Rname, Fields) -> + FName = fname(get, Rname), + Values = ?CALL(tl, [?CALL(tuple_to_list, [?VAR('Rec')])]), + {?function, FName, 1, + [{?clause, [?VAR('Rec')], + [], + [?APPLY(lists, zip, [?TERM(Fields), Values])]}]}. + '#get-X/2'(Rname, Fields) -> FName = fname(get, Rname), {?function, FName, 2, |