diff options
Diffstat (limited to 'lib/hipe/cerl/cerl_pmatch.erl')
| -rw-r--r-- | lib/hipe/cerl/cerl_pmatch.erl | 61 |
1 files changed, 32 insertions, 29 deletions
diff --git a/lib/hipe/cerl/cerl_pmatch.erl b/lib/hipe/cerl/cerl_pmatch.erl index 3bc93e80dd..ca27fff1dd 100644 --- a/lib/hipe/cerl/cerl_pmatch.erl +++ b/lib/hipe/cerl/cerl_pmatch.erl @@ -1,18 +1,19 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2003-2009. All Rights Reserved. +%% Copyright Ericsson AB 2003-2016. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% Licensed under the Apache License, Version 2.0 (the "License"); +%% you may not use this file except in compliance with the License. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. %% %% %CopyrightEnd% %% @@ -31,7 +32,7 @@ -module(cerl_pmatch). --define(NO_UNUSED, true). +%%-define(NO_UNUSED, true). -export([clauses/2]). -ifndef(NO_UNUSED). @@ -59,6 +60,8 @@ %% @see transform/2 -ifndef(NO_UNUSED). +-spec core_transform(cerl:c_module(), [_]) -> cerl:c_module(). + core_transform(M, Opts) -> cerl:to_records(transform(cerl:from_records(M), Opts)). -endif. % NO_UNUSED @@ -76,6 +79,8 @@ core_transform(M, Opts) -> %% @see core_transform/2 -ifndef(NO_UNUSED). +-spec transform(cerl:cerl(), [_]) -> cerl:cerl(). + transform(M, _Opts) -> expr(M, env__empty()). -endif. % NO_UNUSED @@ -109,7 +114,7 @@ transform(M, _Opts) -> %% @see expr/2 %% @see transform/2 --spec clauses([cerl:cerl()], rec_env:environment()) -> +-spec clauses([cerl:cerl(),...], rec_env:environment()) -> {cerl:cerl(), [cerl:cerl()]}. clauses(Cs, Env) -> @@ -226,12 +231,9 @@ match_typegroup(T, V, Vs, Gs, Else, Env) -> Else, Env), typetest_clause(T, V, Body, Env). -match_congroup({?binary_id, Segs}, Vs, Cs, _Else, Env) -> - Ref = get_unique(), - Guard = cerl:c_primop(cerl:c_atom(set_label), [cerl:c_int(Ref)]), - NewElse = cerl:c_primop(cerl:c_atom(goto_label), [cerl:c_int(Ref)]), - Body = match(Vs, Cs, NewElse, Env), - cerl:c_clause([make_pat(?binary_id, Segs)], Guard, Body); +match_congroup({?binary_id, Segs}, Vs, Cs, Else, Env) -> + Body = match(Vs, Cs, Else, Env), + cerl:c_clause([make_pat(?binary_id, Segs)], Body); match_congroup({D, A}, Vs, Cs, Else, Env) -> Vs1 = new_vars(A, Env), @@ -406,8 +408,19 @@ make_let(Vs, A, B) -> %% @see rec_env -ifndef(NO_UNUSED). +-spec expr(cerl:cerl(), rec_env:environment()) -> cerl:cerl(). + expr(E, Env) -> case cerl:type(E) of + binary -> + Es = expr_list(cerl:binary_segments(E), Env), + cerl:update_c_binary(E, Es); + bitstr -> + V = expr(cerl:bitstr_val(E), Env), + Sz = expr(cerl:bitstr_size(E), Env), + Unit = expr(cerl:bitstr_unit(E), Env), + Type = expr(cerl:bitstr_type(E), Env), + cerl:update_c_bitstr(E, V, Sz, Unit, Type, cerl:bitstr_flags(E)); literal -> E; var -> @@ -577,16 +590,6 @@ is_simple(E) -> end. -get_unique() -> - case get(unique_label) of - undefined -> - put(unique_label, 1), - 0; - N -> - put(unique_label, N+1), - N - end. - %% --------------------------------------------------------------------- %% Abstract datatype: environment() |