From 59c41bba956bf399a195c2f1c8c1192073853630 Mon Sep 17 00:00:00 2001 From: Hans Bolinder Date: Thu, 7 Jun 2018 13:08:07 +0200 Subject: stdlib: Move eval_str/1 from mod_esi to erl_eval See also https://bugs.erlang.org/browse/ERL-634. The utility program `erl_call' in erl_interface used to call lib:eval_str/1, which is no longer present in Erlang/OTP 21.0. The lib module was eliminated in OTP-15072, see also https://github.com/erlang/otp/pull/1786. --- .../test/r9c_SUITE_data/src/inets/mod_esi.erl | 44 +-------------------- lib/erl_interface/src/prog/erl_call.c | 4 +- lib/inets/src/http_server/mod_esi.erl | 46 +--------------------- lib/stdlib/src/erl_eval.erl | 46 +++++++++++++++++++++- 4 files changed, 50 insertions(+), 90 deletions(-) diff --git a/lib/dialyzer/test/r9c_SUITE_data/src/inets/mod_esi.erl b/lib/dialyzer/test/r9c_SUITE_data/src/inets/mod_esi.erl index ce144e061f..52db2d9096 100644 --- a/lib/dialyzer/test/r9c_SUITE_data/src/inets/mod_esi.erl +++ b/lib/dialyzer/test/r9c_SUITE_data/src/inets/mod_esi.erl @@ -285,7 +285,7 @@ eval(Info,"GET",CGIBody,Modules) -> "~n Modules: ~p",[Modules]), case auth(CGIBody,Modules) of true -> - case eval_str(string:concat(CGIBody,". ")) of + case erl_eval:eval_str(string:concat(CGIBody,". ")) of {error,Reason} -> ?vlog("eval -> error:" "~n Reason: ~p",[Reason]), @@ -318,48 +318,6 @@ auth(CGIBody,Modules) -> false end. -%% eval_str(InStr) -> {ok, OutStr} | {error, ErrStr'} -%% InStr must represent a body -%% Note: If InStr is a binary it has to be a Latin-1 string. -%% If you have a UTF-8 encoded binary you have to call -%% unicode:characters_to_list/1 before the call to eval_str(). - --define(result(F,D), lists:flatten(io_lib:format(F, D))). - --spec eval_str(string() | unicode:latin1_binary()) -> - {'ok', string()} | {'error', string()}. - -eval_str(Str) when is_list(Str) -> - case erl_scan:tokens([], Str, 0) of - {more, _} -> - {error, "Incomplete form (missing .)??"}; - {done, {ok, Toks, _}, Rest} -> - case all_white(Rest) of - true -> - case erl_parse:parse_exprs(Toks) of - {ok, Exprs} -> - case catch erl_eval:exprs(Exprs, erl_eval:new_bindings()) of - {value, Val, _} -> - {ok, Val}; - Other -> - {error, ?result("*** eval: ~p", [Other])} - end; - {error, {_Line, Mod, Args}} -> - Msg = ?result("*** ~ts",[Mod:format_error(Args)]), - {error, Msg} - end; - false -> - {error, ?result("Non-white space found after " - "end-of-form :~ts", [Rest])} - end - end. - -all_white([$\s|T]) -> all_white(T); -all_white([$\n|T]) -> all_white(T); -all_white([$\t|T]) -> all_white(T); -all_white([]) -> true; -all_white(_) -> false. - %%---------------------------------------------------------------------- %%Creates the environment list that will be the first arg to the %%Functions that is called through the ErlScript Schema diff --git a/lib/erl_interface/src/prog/erl_call.c b/lib/erl_interface/src/prog/erl_call.c index 66265b3e6a..52ad6885e8 100644 --- a/lib/erl_interface/src/prog/erl_call.c +++ b/lib/erl_interface/src/prog/erl_call.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2017. All Rights Reserved. + * Copyright Ericsson AB 1996-2018. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -554,7 +554,7 @@ int erl_call(int argc, char **argv) /* erl_format("[~w]", erl_mk_binary(evalbuf,len))) */ - if (ei_rpc(&ec, fd, "lib", "eval_str", p, i, &reply) < 0) { + if (ei_rpc(&ec, fd, "erl_eval", "eval_str", p, i, &reply) < 0) { fprintf(stderr,"erl_call: evaluating input failed: %s\n", evalbuf); free(p); diff --git a/lib/inets/src/http_server/mod_esi.erl b/lib/inets/src/http_server/mod_esi.erl index b49b3a7093..21aafa7f7b 100644 --- a/lib/inets/src/http_server/mod_esi.erl +++ b/lib/inets/src/http_server/mod_esi.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2016. All Rights Reserved. +%% Copyright Ericsson AB 1997-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -561,7 +561,7 @@ eval(#mod{method = Method} = ModData, ESIBody, Modules) end. generate_webpage(ESIBody) -> - (catch eval_str(string:concat(ESIBody,". "))). + (catch erl_eval:eval_str(string:concat(ESIBody,". "))). is_authorized(_ESIBody, [all]) -> true; @@ -573,45 +573,3 @@ is_authorized(ESIBody, Modules) -> nomatch -> false end. - -%% eval_str(InStr) -> {ok, OutStr} | {error, ErrStr'} -%% InStr must represent a body -%% Note: If InStr is a binary it has to be a Latin-1 string. -%% If you have a UTF-8 encoded binary you have to call -%% unicode:characters_to_list/1 before the call to eval_str(). - --define(result(F,D), lists:flatten(io_lib:format(F, D))). - --spec eval_str(string()) -> - {'ok', string()} | {'error', string()}. - -eval_str(Str) when is_list(Str) -> - case erl_scan:tokens([], Str, 0) of - {more, _} -> - {error, "Incomplete form (missing .)??"}; - {done, {ok, Toks, _}, Rest} -> - case all_white(Rest) of - true -> - case erl_parse:parse_exprs(Toks) of - {ok, Exprs} -> - case catch erl_eval:exprs(Exprs, erl_eval:new_bindings()) of - {value, Val, _} -> - {ok, Val}; - Other -> - {error, ?result("*** eval: ~p", [Other])} - end; - {error, {_Line, Mod, Args}} -> - Msg = ?result("*** ~ts",[Mod:format_error(Args)]), - {error, Msg} - end; - false -> - {error, ?result("Non-white space found after " - "end-of-form :~ts", [Rest])} - end - end. - -all_white([$\s|T]) -> all_white(T); -all_white([$\n|T]) -> all_white(T); -all_white([$\t|T]) -> all_white(T); -all_white([]) -> true; -all_white(_) -> false. diff --git a/lib/stdlib/src/erl_eval.erl b/lib/stdlib/src/erl_eval.erl index 0f6d48b9a3..31c0e60fe1 100644 --- a/lib/stdlib/src/erl_eval.erl +++ b/lib/stdlib/src/erl_eval.erl @@ -29,7 +29,7 @@ -export([new_bindings/0,bindings/1,binding/2,add_binding/3,del_binding/2]). -export([extended_parse_exprs/1, extended_parse_term/1, subst_values_for_vars/2]). --export([is_constant_expr/1, partial_eval/1]). +-export([is_constant_expr/1, partial_eval/1, eval_str/1]). %% Is used by standalone Erlang (escript). %% Also used by shell.erl. @@ -1557,6 +1557,50 @@ ev_expr({cons,_,H,T}) -> [ev_expr(H) | ev_expr(T)]. %% true = erl_internal:guard_bif(F, length(As)), %% apply(erlang, F, [ev_expr(X) || X <- As]); +%% eval_str(InStr) -> {ok, OutStr} | {error, ErrStr'} +%% InStr must represent a body +%% Note: If InStr is a binary it has to be a Latin-1 string. +%% If you have a UTF-8 encoded binary you have to call +%% unicode:characters_to_list/1 before the call to eval_str(). + +-define(result(F,D), lists:flatten(io_lib:format(F, D))). + +-spec eval_str(string() | unicode:latin1_binary()) -> + {'ok', string()} | {'error', string()}. + +eval_str(Str) when is_list(Str) -> + case erl_scan:tokens([], Str, 0) of + {more, _} -> + {error, "Incomplete form (missing .)??"}; + {done, {ok, Toks, _}, Rest} -> + case all_white(Rest) of + true -> + case erl_parse:parse_exprs(Toks) of + {ok, Exprs} -> + case catch erl_eval:exprs(Exprs, erl_eval:new_bindings()) of + {value, Val, _} -> + {ok, Val}; + Other -> + {error, ?result("*** eval: ~p", [Other])} + end; + {error, {_Line, Mod, Args}} -> + Msg = ?result("*** ~ts",[Mod:format_error(Args)]), + {error, Msg} + end; + false -> + {error, ?result("Non-white space found after " + "end-of-form :~ts", [Rest])} + end + end; +eval_str(Bin) when is_binary(Bin) -> + eval_str(binary_to_list(Bin)). + +all_white([$\s|T]) -> all_white(T); +all_white([$\n|T]) -> all_white(T); +all_white([$\t|T]) -> all_white(T); +all_white([]) -> true; +all_white(_) -> false. + ret_expr(_Old, New) -> %% io:format("~w: reduced ~s => ~s~n", %% [line(Old), erl_pp:expr(Old), erl_pp:expr(New)]), -- cgit v1.2.3