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Diffstat (limited to 'lib/parsetools/test/yecc_SUITE.erl')
| -rw-r--r-- | lib/parsetools/test/yecc_SUITE.erl | 1795 |
1 files changed, 1795 insertions, 0 deletions
diff --git a/lib/parsetools/test/yecc_SUITE.erl b/lib/parsetools/test/yecc_SUITE.erl new file mode 100644 index 0000000000..212557194c --- /dev/null +++ b/lib/parsetools/test/yecc_SUITE.erl @@ -0,0 +1,1795 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2005-2010. 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. +%% +%% %CopyrightEnd% +%% +-module(yecc_SUITE). + +%-define(debug, true). + +-include_lib("stdlib/include/erl_compile.hrl"). + +-ifdef(debug). +-define(line, put(line, ?LINE), ). +-define(config(X,Y), foo). +-define(datadir, "yecc_SUITE_data"). +-define(privdir, "yecc_SUITE_priv"). +-define(t, test_server). +-else. +-include("test_server.hrl"). +-define(datadir, ?config(data_dir, Config)). +-define(privdir, ?config(priv_dir, Config)). +-endif. + +-export([all/1, init_per_testcase/2, fin_per_testcase/2]). + +-export([app_test/1, + checks/1, + file/1, syntax/1, compile/1, rules/1, expect/1, + conflicts/1, + examples/1, + empty/1, prec/1, yeccpre/1, lalr/1, old_yecc/1, + other_examples/1, + bugs/1, + otp_5369/1, otp_6362/1, otp_7945/1, + improvements/1, + otp_7292/1, otp_7969/1]). + +% Default timetrap timeout (set in init_per_testcase). +-define(default_timeout, ?t:minutes(1)). + +init_per_testcase(_Case, Config) -> + ?line Dog = ?t:timetrap(?default_timeout), + [{watchdog, Dog} | Config]. + +fin_per_testcase(_Case, Config) -> + Dog = ?config(watchdog, Config), + test_server:timetrap_cancel(Dog), + ok. + +all(suite) -> [app_test, checks, examples, bugs, improvements]. + +app_test(doc) -> + ["Tests the applications consistency."]; +app_test(suite) -> + []; +app_test(Config) when is_list(Config) -> + ?line ok=?t:app_test(parsetools), + ok. + +checks(suite) -> + [file, syntax, compile, rules, expect, conflicts]. + +file(doc) -> + "Bad files and options."; +file(suite) -> []; +file(Config) when is_list(Config) -> + Dir = ?privdir, + Ret = [return, {report, false}], + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file("not_a_file", Ret), + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file("not_a_file", [{return,true}]), + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file("not_a_file", [{report,false},return_errors]), + ?line error = yecc:file("not_a_file"), + ?line error = yecc:file("not_a_file", [{return,false},report]), + ?line error = yecc:file("not_a_file", [return_warnings,{report,false}]), + Filename = filename:join(Dir, "file.yrl"), + file:delete(Filename), + + ?line {'EXIT', {badarg, _}} = (catch yecc:file({foo})), + ?line {'EXIT', {badarg, _}} = + (catch yecc:file(Filename, {parserfile,{foo}})), + ?line {'EXIT', {badarg, _}} = + (catch yecc:file(Filename, {includefile,{foo}})), + + ?line {'EXIT', {badarg, _}} = (catch yecc:file(Filename, no_option)), + ?line {'EXIT', {badarg, _}} = + (catch yecc:file(Filename, [return | report])), + ?line {'EXIT', {badarg, _}} = + (catch yecc:file(Filename, {return,foo})), + ?line {'EXIT', {badarg, _}} = + (catch yecc:file(Filename, includefile)), + + Mini = <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + nt -> t.">>, + ?line ok = file:write_file(Filename, Mini), + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file(Filename, [{parserfile,"//"} | Ret]), + + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file(Filename, [{includefile,"//"} | Ret]), + ?line {error,[{_,[{none,yecc,{file_error,_}}]}],[]} = + yecc:file(Filename, [{includefile,"/ /"} | Ret]), + + YeccPre = filename:join(Dir, "yeccpre.hrl"), + ?line ok = file:write_file(YeccPre, <<"syntax error. ">>), + PreErrors1 = run_test(Config, Mini, YeccPre), + ?line {errors,[_],[]} = extract(YeccPre, PreErrors1), + ?line ok = file:write_file(YeccPre, my_yeccpre()), + ?line {'EXIT', {undef,_}} = (catch run_test(Config, Mini, YeccPre)), + + MiniCode = <<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + nt -> t. + Erlang code. + ">>, + ?line {'EXIT', {undef,_}} = (catch run_test(Config, MiniCode, YeccPre)), + + file:delete(YeccPre), + file:delete(Filename), + + ok. + +syntax(doc) -> + "Syntax checks."; +syntax(suite) -> []; +syntax(Config) when is_list(Config) -> + Dir = ?privdir, + %% Report errors. Very simple test of format_error/1. + Ret = [return, {report, true}], + Filename = filename:join(Dir, "file.yrl"), + Parserfile1 = filename:join(Dir, "a file"), + + ?line ok = file:write_file(Filename, <<"">>), + ?line {error,[{_,[{none,yecc,no_grammar_rules}, + {none,yecc,nonterminals_missing}, + {none,yecc,rootsymbol_missing}, + {none,yecc,terminals_missing}]}],[]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<"Nonterminals">>), + ?line {error,[{_,[{_,yecc,{error,yeccparser,_}}]}],[]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<"Nonterminals nt.">>), + ?line {error,[{_,[{none,yecc,no_grammar_rules}, + {none,yecc,rootsymbol_missing}, + {none,yecc,terminals_missing}]}],[]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<"Nonterminals nt. Terminals t.">>), + ?line {error,[{_,[{none,yecc,no_grammar_rules}, + {none,yecc,rootsymbol_missing}]}],[]} = + yecc:file(Filename, Ret), + + %% Nonterminals and terminals not disjoint. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt 't t'. Terminals t 't t'. Rootsymbol nt.">>), + ?line {error,[{_,[{1,yecc,{symbol_terminal_and_nonterminal,'t t'}}, + {none,yecc,no_grammar_rules}]}], + []} = yecc:file(Filename, Ret), + + %% Rootsymbol is not a nonterminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. + Rootsymbol t. nt -> t.">>), + ?line {error,[{_,[{2,yecc,{bad_rootsymbol,t}}]}],[]} = + yecc:file(Filename, Ret), + + %% Rootsymbol is not a nonterminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. + Rootsymbol t. nt -> t.">>), + ?line {error,[{_,[{2,yecc,{bad_rootsymbol,t}}]}],[]} = + yecc:file(Filename, Ret), + + %% Endsymbol is a nonterminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. + Endsymbol nt. + nt -> t.">>), + ?line {error,[{_,[{2,yecc,{endsymbol_is_nonterminal,nt}}]}],[]} = + yecc:file(Filename, Ret), + + %% Endsymbol is a terminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. + Endsymbol t. + nt -> t.">>), + ?line {error,[{_,[{2,yecc,{endsymbol_is_terminal,t}}]}],[]} = + yecc:file(Filename, Ret), + + %% No grammar rules. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. Endsymbol e.">>), + ?line {error,[{_,[{none,yecc,no_grammar_rules}]}],[]} = + yecc:file(Filename, Ret), + + %% Bad declaration. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. Endsymbol e. + nt -> t. e e.">>), + ?line {ok,_,[{_,[{2,yecc,bad_declaration}]}]} = + yecc:file(Filename, Ret), + + %% Bad declaration. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. + Rootsymbol nt nt. Rootsymbol nt. Endsymbol e. + nt -> t.">>), + ?line {ok,_,[{_,[{2,yecc,bad_declaration}]}]} = + yecc:file(Filename, Ret), + + %% Syntax error found by yeccparser. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. Endsymbol e. + a - a.">>), + ?line {error,[{_,[{2,yecc,{error,_yeccparser,_}}]}],[]} = + yecc:file(Filename, Ret), + + %% Syntax error: unknown nonterminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. Endsymbol e. + 'unknown ' -> t.">>), + ?line {error,[{_,[{2,yecc,{undefined_nonterminal,'unknown '}}]}],[]} = + yecc:file(Filename, Ret), + + %% Undefined rhs symbols. Note quotes in output. + ?line ok = file:write_file(Filename, + <<"Nonterminals Nonterminals nt. + Terminals t Terminals. + Rootsymbol nt. + Endsymbol e. + nt -> Nonterminals. + Nonterminals -> Terminals receive foo 45 + '17' 'a b'.">>), + ?line {error,[{_,[{6,yecc,{undefined_symbol,45}}, + {6,yecc,{undefined_symbol,foo}}, + {6,yecc,{undefined_symbol,'receive'}}, + {7,yecc,{undefined_symbol,'17'}}, + {7,yecc,{undefined_symbol,'a b'}}]}],[]} = + yecc:file(Filename, Ret), + + %% '$empty' used early, before Terminals. OK. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + nt -> '$empty'. + Terminals t. + Rootsymbol nt. + Endsymbol e.">>), + ?line {ok,_,[{_,[{3,yecc,{unused_terminal,t}}]}]} = + yecc:file(Filename, Ret), + + %% Illegal use of '$empty'. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt nt2. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t. + nt2 -> t '$empty'.">>), + ?line {error,[{_,[{6,yecc,illegal_empty}]}],[]} = + yecc:file(Filename, Ret), + + ParserFile3 = [{parserfile, Parserfile1}], + + %% Bad Erlang expression in action. Changed in OTP-7224. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t : a bad code.">>), + ?line {ok, _, []} = yecc:file(Filename, ParserFile3 ++ Ret), + + SzYeccPre = yeccpre_size(), + %% Note: checking the line numbers. Changes when yeccpre.hrl changes. + fun() -> + ?line {error,[{_,[{5,_,["syntax error before: ","bad"]}]}, + {_,[{L1,_,{undefined_function,{yeccpars2_2_,1}}}, + {L2,_,{bad_inline,{yeccpars2_2_,1}}}]}], + []} = compile:file(Parserfile1, [basic_validation,return]), + ?line L1 = 24 + SzYeccPre, + ?line L2 = 31 + SzYeccPre + end(), + + %% Bad macro in action. OTP-7224. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t : ?F(3).">>), + ?line {ok, _, []} = yecc:file(Filename, ParserFile3 ++ Ret), + %% Note: checking the line numbers. Changes when yeccpre.hrl changes. + fun() -> + ?line {error,[{_,[{5,_,{undefined,'F'}}]}, + {_,[{L1,_,{undefined_function,{yeccpars2_2_,1}}}, + {L2,_,{bad_inline,{yeccpars2_2_,1}}}]}], + []} = compile:file(Parserfile1, [basic_validation,return]), + ?line L1 = 24 + SzYeccPre, + ?line L2 = 31 + SzYeccPre + end(), + + %% Check line numbers. OTP-7224. + ?line ok = file:write_file(Filename, + <<"Terminals t. + Nonterminals nt. + Rootsymbol nt. + Endsymbol e. + nt -> t : ?F(3). + Erlang code. + -define(F(X), X). + t() -> + bad().">>), + ?line {ok, _, []} = yecc:file(Filename, ParserFile3 ++ Ret), + ?line {error,[{_,[{9,_,{undefined_function,{bad,0}}}]}], + [{_,[{8,_,{unused_function,{t,0}}}]}]} + = compile:file(Parserfile1, [basic_validation, return]), + + %% Terminals defined before nonterminals. (One of many checks...) + %% Used to give an error message, but now allowed. + ?line ok = file:write_file(Filename, + <<"Terminals t. + Nonterminals nt. + Rootsymbol nt. + Endsymbol e. + nt -> t. + Erlang code.">>), + ?line {ok, _, []} = yecc:file(Filename, Ret), + + %% Precedence with swapped arguments. Bad declaration. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t. + Right t. + Left nt 100.">>), + ?line {ok,_,[{_,[{6,yecc,bad_declaration},{7,yecc,bad_declaration}]}]} = + yecc:file(Filename, Ret), + + %% Precedence with unknown operator. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t. + Unary 100 '-'.">>), + ?line {error,[{_,[{6,yecc,{precedence_op_is_unknown,'-'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Precedence with endsymbol operator. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t. + Unary 100 e.">>), + ?line {error,[{_,[{6,yecc,{precedence_op_is_endsymbol,e}}]}],[]} = + yecc:file(Filename, Ret), + + %% Duplicated precedence. + ?line ok = file:write_file(Filename, <<" + Nonterminals nt. + Terminals t '+'. + Rootsymbol nt. + nt -> t '+' nt. + Left 100 '+'. + Right 200 t. + Left 200 '+'. + Left 200 '+'. + Right 200 t.">>), + ?line {error,[{_,[{8,yecc,{duplicate_precedence,'+'}}, + {9,yecc,{duplicate_precedence,'+'}}, + {10,yecc,{duplicate_precedence,t}}]}], + []} = yecc:file(Filename, Ret), + + %% Duplicated nonterminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals 'n t' 'n t'. Terminals t. + Rootsymbol 'n t'. 'n t' -> t.">>), + ?line {ok, _, [{_,[{1,yecc,{duplicate_nonterminal,'n t'}}]}]} = + yecc:file(Filename, Ret), + ?line {ok, _, [{_,[{1,yecc,{duplicate_nonterminal,'n t'}}]}]} = + yecc:file(Filename, [return_warnings, {report, false}]), + ?line {ok, _} = yecc:file(Filename), + ?line {ok, _} = + yecc:file(Filename, [{report,false}, {return_warnings,false}]), + + %% Duplicated terminal. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals 't t' 't t'. + Rootsymbol nt. nt -> 't t'.">>), + ?line {ok, _, [{_,[{1,yecc,{duplicate_terminal,'t t'}}]}]} = + yecc:file(Filename, Ret), + + %% Two Nonterminals declarations. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. + Nonterminals nt2. + Rootsymbol nt2. nt -> t. nt2 -> nt.">>), + ?line {error,[{_,[{2,yecc,{duplicate_declaration,'Nonterminals'}}]}], + []} = yecc:file(Filename, Ret), + + %% Three Terminals declarations. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. + Terminals t1. + Terminals t1. + Rootsymbol nt. nt -> t t1.">>), + ?line {error,[{_,[{2,yecc,{duplicate_declaration,'Terminals'}}, + {3,yecc,{duplicate_declaration,'Terminals'}}]}], + []} = yecc:file(Filename, Ret), + + %% Two root symbols. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol t. + Rootsymbol nt. nt -> t.">>), + ?line {error,[{_,[{2,yecc,{duplicate_declaration,'Rootsymbol'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Two end symbols. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol t. + Endsymbol e. + Endsymbol e. nt -> t.">>), + ?line {error,[{_,[{3,yecc,{duplicate_declaration,'Endsymbol'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Two end symbols. + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol t. + Expect 1. + Expect 0. + Endsymbol e. nt -> t.">>), + ?line {error,[{_,[{3,yecc,{duplicate_declaration,'Expect'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Some words should not be used. + ?line ok = file:write_file(Filename, <<" + Terminals '$empty' '$end'. + Nonterminals '$undefined'. + Rootsymbol '$undefined'. + Endsymbol '$end'. + '$undefined' -> '$empty'. + ">>), + ?line {error,[{_,[{2,yecc,{reserved,'$empty'}}, + {2,yecc,{reserved,'$end'}}, + {3,yecc,{reserved,'$undefined'}}, + {5,yecc,{endsymbol_is_terminal,'$end'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Undefined pseudo variable. + ?line ok = file:write_file(Filename,<<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + nt -> t : '$2'. + ">>), + ?line {error,[{_,[{5,yecc,{undefined_pseudo_variable,'$2'}}]}],[]} = + yecc:file(Filename, Ret), + + %% Space in module name. + ?line ok = file:write_file(Filename, <<" + Nonterminals list. + Terminals element. + Rootsymbol list. + + list -> element : {single, '$1'}. + list -> list element : {pair, '$1', '$2'}. + + Erlang code. + + -export([t/0]). + + t() -> + L = [{element, 1}, {element, 2}, {element, 3}], + {ok,_} = parse(L), + ok. + ">>), + + Parserfile2 = filename:join(Dir, "a \"file\""), + %% The parser (yeccgramm.yrl) allows many symbol names... + ?line ok = file:write_file(Filename, <<" + Nonterminals Nonterminals Rootsymbol ':' '->'. + Terminals Terminals. + Rootsymbol Rootsymbol. + Endsymbol e. + Rootsymbol -> Nonterminals ':' '->'. + Nonterminals -> Terminals. + ':' -> '->'. + '->' -> Terminals. + ">>), + ?line {ok, _} = yecc:file(Filename, [{parserfile, Parserfile1}]), + ?line {ok, _} = yecc:file(Filename, [{parserfile, Parserfile1},time]), + ?line {ok,[]} = compile:file(Parserfile1, [basic_validation]), + + Quotes = <<" + Nonterminals + tail try 17 42 Unused ' unused ' '42' 'fnutt\\'' receive. + + Terminals + ']' '|' ',' '\"hi\"' 'there\\'' 'you\\'' ACCEPT. + + Rootsymbol 17. + + Endsymbol '$end'. + + 17 -> try : '$1':more([\"hi \\\" there\", '.', 3.14, % $3 , % '$1' is a module + -104, ' ', ' a', '->', $a, $\t]), '$1'. + + try -> tail 'you\\'' 'fnutt\\''. + + 'fnutt\\'' -> 'you\\'' ACCEPT. + + '42' -> tail. + + tail -> ']' : + (fun(Strange) -> foo end)(apa). + tail -> '|' try ']' : + (fun(Strange) -> foo; + (_) -> 'when' % warning + end)('ap a', foo), + %% This line intentionally left blank. + R = #rec{}, + A = R#rec.a, + <<\"hi\">> = <<\"hi\">>, + there. + tail -> ',' try tail : {cons,line('$2'),'$2','$3'}. + + + Erlang code. + + -export([t/0]). + + -record(rec, {a}). + + just(Some, Code) -> + true. + + more(Code) -> + io:format(\"~p~n\", [Code]), true. + + line(_) -> + 17. + + t() -> + ok. % compiled successfully... + + ">>, + + ?line ok = file:write_file(Filename, Quotes), + ?line {ok,_,[{_, + [{3,yecc,{unused_nonterminal,42}}, + {3,yecc,{unused_nonterminal,' unused '}}, + {3,yecc,{unused_nonterminal,'42'}}, + {3,yecc,{unused_nonterminal,'Unused'}}, + {3,yecc,{unused_nonterminal,'receive'}}, + {6,yecc,{unused_terminal,'"hi"'}}, + {6,yecc,{unused_terminal,'there\''}}]}]} = + yecc:file(Filename, Ret), + + Ts = [{quotes, Quotes, default, ok}], + ?line run(Config, Ts), + + %% Non-terminal has no rules, but is unused. + ?line ok = file:write_file(Filename,<<" + Nonterminals nt bad. + Terminals t. + Rootsymbol nt. + + nt -> t : something. + ">>), + ?line {ok,_,[{_,[{2,yecc,{unused_nonterminal,bad}}]}]} = + yecc:file(Filename, Ret), + + %% Non-terminal has no rules and is used. + ?line ok = file:write_file(Filename,<<" + Nonterminals nt bad. + Terminals t. + Rootsymbol nt. + + nt -> t bad : something. + ">>), + ?line {error,[{_,[{2,yecc,{missing_syntax_rule,bad}}]}],[]} = + yecc:file(Filename, Ret), + + %% Warning in Erlang code. With and without file attributes. + ?line ok = file:write_file(Filename,<<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + + nt -> t : t(17). + + Erlang code. + + t(A) -> + b. + ">>), + ?line {ok, _, []} = + yecc:file(Filename, [file_attributes | Ret]), + Opts = [basic_validation, return], + Erlfile = filename:join(Dir, "file.erl"), + ?line {ok,[],[{_,[{10,_,_}]}]} = compile:file(Erlfile, Opts), + ?line {ok, _, []} = + yecc:file(Filename, [{file_attributes,false} | Ret]), + ?line {ok,[],[{_,[{4,_,_}]}]} = compile:file(Erlfile, Opts), + + file:delete(Parserfile1 ++ ".erl"), + file:delete(Parserfile2 ++ ".erl"), + file:delete(Filename), + + ok. + +compile(doc) -> + "Check of compile/3."; +compile(suite) -> []; +compile(Config) when is_list(Config) -> + Dir = ?privdir, + Filename = filename:join(Dir, "file.yrl"), + Parserfile = filename:join(Dir, "file.erl"), + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + nt -> t.">>), + ?line error = yecc:compile(Filename, "//", #options{}), + ?line ok = yecc:compile(Filename, Parserfile, #options{}), + file:delete(Parserfile), + file:delete(Filename), + ok. + +rules(doc) -> + "Check of rules."; +rules(suite) -> []; +rules(Config) when is_list(Config) -> + Dir = ?privdir, + Ret = [return, {report, false}], + Filename = filename:join(Dir, "file.yrl"), + + ?line ok = file:write_file(Filename, + <<"Nonterminals nt. Terminals t. Rootsymbol nt. + nt -> t. nt -> t.">>), + ?line {error,[{_,[{none,yecc,{conflict,_}}]}], + [{_,[{none,yecc,{conflicts,0,1}}]}]} = + yecc:file(Filename, [return, report]), + + ?line ok = file:write_file(Filename, <<" + Nonterminals A B E. + Terminals c d f x y. + Rootsymbol A. + + A -> B c d. + A -> E c f. + B -> x y. + E -> x y. + ">>), + ?line {error,[{_,[{none,yecc,{conflict,_}}]}], + [{_,[{none,yecc,{conflicts,0,1}}]}]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename,<<" + Terminals t. + Nonterminals nt. + Rootsymbol nt. + nt -> '$empty' : '$1'. + nt -> t. + ">>), + ?line {error,[{_,[{5,yecc,{undefined_pseudo_variable,'$1'}}]}],[]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename,<<" + Terminals t. + Nonterminals nt. + Rootsymbol nt. + nt -> '$empty' : '$0'. + nt -> t. + ">>), + ?line {error,[{_,[{5,yecc,{undefined_pseudo_variable,'$0'}}]}],[]} = + yecc:file(Filename, Ret), + + file:delete(Filename), + + %% No precedences. + Ts = [{rules_1,<<" + Nonterminals exp. + Terminals number '*' '+' '(' ')'. + Rootsymbol exp. + + exp -> exp '+' exp : {plus,'$1','$3'}. + exp -> exp '*' exp : {times,'$1','$3'}. + exp -> number : element(2, '$1'). + exp -> '(' exp ')' : '$2'. + + Erlang code. + + -export([t/0]). + + t() -> + {ok, {times, 1, {plus, 3, 5}}} = + parse([{number,1}, {'*',2}, {number,3}, + {'+',4}, {number,5}]), + ok. + ">>, + default, + ok}], + ?line run(Config, Ts), + ok. + +examples(suite) -> + [empty, prec, yeccpre, lalr, old_yecc, other_examples]. + +expect(doc) -> + "Check of expect."; +expect(suite) -> []; +expect(Config) when is_list(Config) -> + Dir = ?privdir, + Ret = [return, {report, true}], + Filename = filename:join(Dir, "file.yrl"), + + ?line ok = file:write_file(Filename, <<" + Nonterminals e. + Terminals i t else. + Rootsymbol e. + Expect a. + + e -> i e t e. + e -> i e t e else e. + ">>), + ?line {error,[{_,[{5,yecc,{bad_expect,a}}]}],[]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<" + Nonterminals e. + Terminals i t else. + Rootsymbol e. + Expect 1. + + e -> i e t e. + e -> i e t e else e. + ">>), + ?line {ok, _, []} = yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<" + Nonterminals e. + Terminals i t else. + Rootsymbol e. + Expect 2. + + e -> i e t e. + e -> i e t e else e. + ">>), + ?line {ok, _, [{_,[{none,yecc,{conflicts,1,0}}]}]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<" + Nonterminals e. + Terminals i t else. + Rootsymbol e. + Expect -2. + + e -> i e t e. + e -> i e t e else e. + ">>), + ?line {error,[{_,[{5,yecc,{error,_yeccparser,_}}]}],[]} = + yecc:file(Filename, Ret), + + %% States N. An undocumented declaration used for testing. + ?line ok = file:write_file(Filename, <<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + States 100. + nt -> t.">>), + ?line {ok,_,[{_, [{none,yecc,{n_states,100,3}}]}]} = + yecc:file(Filename, Ret), + + ?line ok = file:write_file(Filename, <<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + States bad. + nt -> t.">>), + ?line {error,[{_,[{5,yecc,{bad_states,bad}}]}],[]} = + yecc:file(Filename, Ret), + + file:delete(Filename), + ok. + +conflicts(doc) -> + "Shift/reduce and reduce/reduce conflicts."; +conflicts(suite) -> []; +conflicts(Config) when is_list(Config) -> + Dir = ?privdir, + Ret = [return, {report, true}], + Filename = filename:join(Dir, "file.yrl"), + + ?line ok = file:write_file(Filename, <<" + Nonterminals S List Tuple Elements Element. + Terminals '{' '}' '[' ']' ',' nil e. + Rootsymbol S. + + S -> '$empty' : empty. + S -> List : '$1'. + + List -> '$empty' : []. + List -> nil : []. + List -> '[' Tuple ']' : {list, '$2'}. + + Tuple -> '$empty' : {}. + Tuple -> '{' '}' : {}. + Tuple -> '{' Elements '}' : {tuple, '$2'}. + + Elements -> '$empty' : none. + Elements -> Elements ',' Element : {elements, '$3', '$1'}. + Elements -> Element : '$1'. + + Element -> List : '$1'. + Element -> Tuple : '$1'. + Element -> e : '$1'. + ">>), + ?line {error,[{_,_}],[{_,[{none,yecc,{conflicts,1,5}}]}]} = + yecc:file(Filename, Ret), + + %% Can easily be resolved (but don't do it!). + ?line ok = file:write_file(Filename, <<" + Nonterminals S List Tuple Elements Element. + Terminals '{' '}' '[' ']' ',' nil e. + Rootsymbol S. + + Right 100 List. + + S -> '$empty' : empty. + S -> List : '$1'. + + List -> '$empty' : []. + List -> nil : []. + List -> '[' Tuple ']' : {list, '$2'}. + + Tuple -> '$empty' : {}. + Tuple -> '{' '}' : {}. + Tuple -> '{' Elements '}' : {tuple, '$2'}. + + Elements -> '$empty' : none. + Elements -> Elements ',' Element : {elements, '$3', '$1'}. + Elements -> Element : '$1'. + + Element -> List : '$1'. + Element -> Tuple : '$1'. + Element -> e : '$1'. + ">>), + ?line {ok, _, []} = + yecc:file(Filename, Ret), + + file:delete(Filename), + ok. + +empty(doc) -> + "'$empty'."; +empty(suite) -> []; +empty(Config) when is_list(Config) -> + Ts = [{empty_1, <<" + Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> '$empty': nothing. + nt -> t : something. + + Erlang code. + + -export([t/0]). + + t() -> + {ok, nothing} = parse([{e,2}]), + {ok, something} = parse([{t,1},{e,2}]), + ok.">>, + default, + ok}, + {empty_2, <<" + %% There used to be a bug when it came to the left + %% corners. In this example rule 2 is a prefix of rule 1 + %% such that the rule 2 generates $empty but rule 1 does + %% not. The old buggy code seemingly worked well too. + Nonterminals top A B C D. + Terminals t. + Rootsymbol top. + + top -> A B C D : {'$1','$2','$3','$4'}. + top -> A B C : {'$1','$2','$3'}. + + A -> '$empty' : e. + B -> '$empty' : e. + C -> '$empty' : e. + + D -> t : t. + + Erlang code. + + -export([t/0]). + + t() -> + {ok,{e,e,e,t}} = parse([{t, 1}]), + {ok,{e,e,e}} = parse([]), + ok. + ">>, + default, + ok}], + ?line run(Config, Ts), + ok. + +prec(doc) -> + "Precedence."; +prec(suite) -> []; +prec(Config) when is_list(Config) -> + Dir = ?privdir, + Ret = [return, {report, false}], + Filename = filename:join(Dir, "file.yrl"), + + %% Don't know what 'Unary' actually means, but this is how it has + %% always worked... + ?line ok = file:write_file(Filename, <<" + Nonterminals E. + Terminals '*' '+' '=' integer. + Rootsymbol E. + + E -> E '=' E : {op, '=', '$1', '$3'}. + E -> E '*' E : {op, '*', '$1', '$3'}. + E -> E '+' E : {op, '+', '$1', '$3'}. + E -> integer : '$1'. + + Unary 100 '='. + Left 200 '+'. + Left 400 '*'. + ">>), + ?line {error,[{_,[{none,yecc,{conflict,_}}]}], + [{_,[{none,yecc,{conflicts,1,0}}]}]} = + yecc:file(Filename, Ret), + + Ts = [{prec_1, <<" + Nonterminals E Expr Uminus. + Terminals '=' '+' '*' '-' '(' ')' integer var dot. + Rootsymbol Expr. + + Expr -> E dot : '$1'. + E -> var '=' E : {match, line_of('$1'), '$1', '$3'}. + E -> E '+' E : {op, line_of('$1'), '+', '$1', '$3'}. + E -> E '-' E : {op, line_of('$1'), '-', '$1', '$3'}. + E -> E '*' E : {op, line_of('$1'), '*', '$1', '$3'}. + E -> Uminus : '$1'. + E -> '(' E ')' : '$2'. + E -> integer : '$1'. + + Uminus -> '-' E : {op, line_of('$1'), '-', '$2'}. + + Right 200 '='. + Left 300 '+'. + Left 300 '-'. + Left 400 '*'. + Unary 500 Uminus. + + Erlang code. + + -export([t/0, t/1]). + + line_of(Token) -> + element(2, Token). + + t() -> + {ok, -56} = t(\"A = (4 + 3) * - 8. \"), + {ok, 28} = t(\"A = 4 + B=3 * 8. \"), + {ok, 28} = t(\"4 - 3 * - 8. \"), + {ok, -20} = t(\"4 - 3 * 8. \"), + {ok, 2} = t(\"1 - - 1.\"), + ok. + + t(S) -> + case erl_scan:string(S) of + {ok, Tokens, _Line} -> + case parse(Tokens) of + {ok, Expr} -> + case catch erl_eval:expr(Expr, []) of + {value, Value, _Bs} -> + {ok, Value}; + {'EXIT', Reason} -> + {error, Reason} + end; + Error -> + Error + end; + Error -> + Error + end. + ">>, + default, + ok}, + + {prec_2, <<" + Nonterminals E uminus. + Terminals '*' '-' integer. + Rootsymbol E. + + E -> E '-' E : {op, '-', '$1', '$3'}. + E -> E '*' E : {op, '*', '$1', '$3'}. + E -> uminus: '$1'. + E -> integer : '$1'. + + uminus -> '-' E : {op, '-', '$2'}. + + Left 200 '-'. + Left 400 '*'. + Unary 500 uminus. + + Erlang code. + + -export([t/0]). + + t() -> + %% This used to be parsed -(4 * 3), but that has been corrected: + {ok,{op,'*',{op,'-',{integer,1,4}},{integer,3,12}}} = + parse([{'-',0},{integer,1,4},{'*',2},{integer,3,12}]), + + {ok,{op,'-',{op,'-',{integer,1,4}},{integer,3,12}}} = + parse([{'-',0},{integer,1,4},{'-',2},{integer,3,12}]), + {ok,{op,'*',{op,'-',{op,'-',{integer,2,4}}},{integer,4,12}}} = + parse([{'-',0},{'-',1},{integer,2,4},{'*',3},{integer,4,12}]), + {ok,{op,'-',{integer,1,4},{op,'-',{integer,4,12}}}} = + parse([{integer,1,4},{'-',2},{'-',3},{integer,4,12}]), + ok. + ">>, + default, + ok}, + {prec_3, <<" + Nonterminals nt. + Terminals '(' ')' t op. + Rootsymbol nt. + + Nonassoc 100 op. + + nt -> nt op nt : {'$2', '$1', '$3'}. + nt -> '(' nt ')' : '$2'. + nt -> t : '$1'. + + Erlang code. + + -export([t/0]). + + t() -> + {error,{4,yecc_test,[\"syntax error before: \",\"op\"]}} = + parse([{t,1},{op,2},{t,3},{op,4},{t,5}]), + {ok,{{op,2},{t,1},{{op,5},{t,4},{t,6}}}} = + parse([{t,1},{op,2},{'(',3},{t,4},{op,5},{t,6},{')',7}]), + ok. + ">>, + default, + ok}, + + {prec_4, <<" + Nonterminals E. + Terminals '-' '+' '=' id. + Rootsymbol E. + + E -> E '=' E : {op, '=', '$1', '$3'}. + E -> E '+' E : {op, '+', '$1', '$3'}. + E -> '-' E : {op, '-', '$2'}. + E -> id : '$1'. + + Nonassoc 100 '='. + Right 200 '+' '-'. + + Erlang code. + + -export([t/0]). + + t() -> + {ok,{op,'=',{id,1},{op,'-',{op,'+',{id,4},{id,6}}}}} = + parse([{id,1},{'=',2},{'-',3},{id,4},{'+',5},{id,6}]), + ok. + + ">>, + default, + ok}], + + ?line run(Config, Ts), + ok. + +yeccpre(doc) -> + "Errors etc. in actions, handled by yeccpre. parse_and_scan."; +yeccpre(suite) -> []; +yeccpre(Config) when is_list(Config) -> + Ts = [{error_1, <<" + Nonterminals list. + Terminals element e. + Rootsymbol list. + + list -> element : {single, '$1'}. + list -> list element : throw(error). + list -> e : return_error(element(2, '$1'), bad_element). + + Erlang code. + + -export([t/0]). + + t() -> + error = (catch parse([{element,1},{element,2}])), + {error, {2, _, Mess}} = parse([{element,1},{e,2}]), + ok. + ">>, + default, + ok}, + + {error_2, <<" + Nonterminals list. + Terminals element. + Rootsymbol list. + + list -> element. + + Erlang code. + + -export([t/0, scan/1]). + + scan(How) -> + case How of + thrown -> throw(thrown); + error -> erlang:error(error); + exit -> exit(exit) + end. + + t() -> + try parse_and_scan({yecc_test, scan, [thrown]}) + catch throw: thrown -> + ok + end, + try parse_and_scan({yecc_test, scan, [error]}) + catch error: error -> + ok + end, + try parse_and_scan({{yecc_test, scan}, [exit]}) + catch exit: exit -> + ok + end, + try parse_and_scan({fun scan/1, [thrown]}) + catch throw: thrown -> + ok + end, + ok. + ">>, + default, + ok}], + + ?line run(Config, Ts), + ok. + +lalr(doc) -> + "Examples of grammars that are LALR(1) but not SLR(1)."; +lalr(suite) -> []; +lalr(Config) when is_list(Config) -> + Ts = [{lalr_1, <<" + %% http://inst.cs.berkeley.edu/~cs164/lectures/slide14a.pdf + %% http://pages.cpsc.ucalgary.ca/~robin/class/411/LR.1.html + %% b d . c. Shift or reduce? + Nonterminals S A. + Terminals a b c d. + Rootsymbol S. + S -> A a : {r1,'$1','$2'}. + S -> b A c : {r2,'$1','$2','$3'}. + S -> d c : {r3,'$1','$2'}. + S -> b d a : {r4,'$1','$2','$3'}. + + A -> d : {r5,'$1'}. + + Erlang code. + + -export([t/0]). + + t() -> + %% Reduce! + {ok,{r2,{b,1},{r5,{d,2}},{c,3}}} = parse([{b,1},{d,2},{c,3}]), + ok. + ">>, + default, + ok}, + {lalr_2, <<" + %% http://www.cs.pitt.edu/~mock/cs2210/lectures/lecture5.pdf + Nonterminals S L R. + Terminals '*' id '='. + Rootsymbol S. + S -> L '=' R : {r1,'$1','$3'}. + S -> R : {r2,'$1'}. + + L -> '*' R : {r3,'$2'}. + L -> id : {r4,'$1'}. + + R -> L : {r5,'$1'}. + + Erlang code. + + -export([t/0]). + + t() -> + {ok,{r1,{r3,{r5,{r4,{id,1}}}},{r5,{r4,{id,3}}}}} = + parse([{'*',0},{id,1},{'=',2},{id,3}]), + ok. + ">>, + default, + ok}], + ?line run(Config, Ts), + ok. + +old_yecc(doc) -> + "The old interface yecc:yecc/2,3,4."; +old_yecc(suite) -> []; +old_yecc(Config) when is_list(Config) -> + Dir = ?privdir, + Filename = filename:join(Dir, "file.yrl"), + Parserfile = filename:join(Dir, "file.erl"), + Mini = <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + nt -> t.">>, + ?line ok = file:write_file(Filename, Mini), + ?line {_, _} = yecc:yecc(Filename, Parserfile), + ?line {_, _} = yecc:yecc(Filename, Parserfile, true), + ?line {_, _} = yecc:yecc(Filename, Parserfile, true), + TE = process_flag(trap_exit, true), + ?line {'EXIT', error} = + (catch yecc:yecc(Filename, Parserfile, false, Parserfile)), + _ = process_flag(trap_exit, TE), + ok. + +other_examples(doc) -> + "Misc examples."; +other_examples(suite) -> []; +other_examples(Config) when is_list(Config) -> + Ts = [{empty, <<" + %% G1 from the 1974 article. + + Nonterminals LIST ELEMENT. + Terminals ',' a b. + Rootsymbol LIST. + + LIST -> LIST ',' ELEMENT : {'$1', '$3'}. + LIST -> ELEMENT : '$1'. + + ELEMENT -> a : '$1'. + ELEMENT -> b : '$1'. + + Erlang code. + + -export([t/0]). + + t() -> + L = [{a, 1}, {',', 2}, {b, 3}], + {ok,{{a,1},{b,3}}} = parse(L), + ok. + ">>, + default, + ok}], + ?line run(Config, Ts), + ok. + +bugs(suite) -> + [otp_5369, otp_6362, otp_7945]. + +otp_5369(doc) -> + "OTP-5369. A bug in parse_and_scan reported on erlang questions."; +otp_5369(suite) -> []; +otp_5369(Config) when is_list(Config) -> + Ts = [{otp_5369,<<" + Nonterminals list. + Terminals element. + Rootsymbol list. + + list -> element : {single, '$1'}. + list -> list element : {pair, '$1', '$2'}. + + Erlang code. + + -export([t/0, scan/1]). + + scan(Lexer) -> + Lexer ! {scan, self()}, + receive + {ok, Lexer, [Token], Position} -> + {ok, [Token], Position}; + {eof, Lexer, Position} -> + {eof, Position} + end. + + make_scanner(L) -> + spawn_link(fun() -> + loop(L) + end). + + loop([]) -> + receive + {scan, Pid} -> + Pid ! {eof, self(), 1000} + end; + loop([Token = {_, P}|T]) -> + receive + {scan, Pid} -> + Pid ! {ok, self(), [Token], P}, + loop(T) + end. + + t(L) -> + case parse_and_scan({yecc_test, scan, [make_scanner(L)]}) of + {ok, _Result} -> + ok; + {error, {_LineNumber, Module, Message}} -> + _M = apply(Module, format_error, [Message]), + not_ok + end. + + t() -> + not_ok = t([]), %% This test has been added afterwards. + %% OTP-5369 did not fix this bug! + L = [{element, 1}, + {element, 2}, + {element, 3}], + t(L). + ">>, + default, + ok}], + ?line run(Config, Ts), + ok. + +otp_6362(doc) -> + "OTP-6362. A precedence declaration bug reported on erlang questions."; +otp_6362(suite) -> []; +otp_6362(Config) when is_list(Config) -> + Ts = [{otp_6362_1,<<" + Nonterminals cmp compare expr. + Terminals 'string' '>' '='. + Rootsymbol compare. + Nonassoc 250 cmp. + compare -> expr cmp expr : {cmp, '$2', '$1', '$3'}. + compare -> expr : {cmp, '==', '$1', {string, \"TRUE\"}}. + cmp -> '>' '=' : '>='. + cmp -> '>' : '>'. + expr -> 'string' : '$1'. + + Erlang code. + + -export([t/0]). + + t() -> + {ok,{cmp,'>',{string,1},{string,3}}} = + parse([{string,1}, {'>', 2}, {string,3}]), + ok. + ">>, + default, + ok}], + ?line run(Config, Ts), + + Dir = ?privdir, + %% Report errors. Very simple test of format_error/1. + Ret = [return, {report, true}], + Filename = filename:join(Dir, "file.yrl"), + + %% An error introduced due to this ticket. Terminals can be + %% assigned conflicting precedences, which cannot be resolved. + ?line ok = file:write_file(Filename,<<" + Nonterminals cmp compare expr fopp. + Terminals string '>' '='. + Rootsymbol compare. + Nonassoc 250 cmp. + Left 300 '>'. + + compare -> expr cmp expr : {cmp, '$2', '$1', '$3'}. + compare -> expr fopp expr : {cmp, '$2', '$1', '$3'}. + compare -> expr '=' expr : '$1'. + compare -> expr : {cmp, '==', '$1', {string, foo}}. + cmp -> '>' '=' : '>='. + cmp -> '>' : '>'. + expr -> string : '$1'. + + fopp -> '>' '=' : '>='. + fopp -> '>' : '>'.">>), + + Ret = [return, {report, true}], + ?line {error,[{_,[{none,yecc,{conflict,_}}]}],[]} = + yecc:file(Filename, Ret), + file:delete(Filename), + ok. + +my_yeccpre() -> + %% Version 1.1. + <<"parse(Tokens) -> + yeccpars0(Tokens, false). + + parse_and_scan({F, A}) -> % Fun or {M, F} + yeccpars0([], {F, A}); + parse_and_scan({M, F, A}) -> + yeccpars0([], {{M, F}, A}). + + format_error(Message) -> + case io_lib:deep_char_list(Message) of + true -> + Message; + _ -> + io_lib:write(Message) + end. + + % To be used in grammar files to throw an error message to the parser + % toplevel. Doesn't have to be exported! + -compile({nowarn_unused_function,{return_error,2}}). + return_error(Line, Message) -> + throw({error, {Line, yecc_test, Message}}). + + yeccpars0(Tokens, MFA) -> + try yeccpars1(Tokens, MFA, 0, [], []) + catch + throw: {error, {_Line, yecc_test, _M}} = Error -> + Error % probably from return_error/1 + end. + + % Don't change yeccpars1/6 too much, it is called recursively by yeccpars2/8! + yeccpars1([Token | Tokens], Tokenizer, State, States, Vstack) -> + yeccpars2(State, element(1, Token), States, Vstack, Token, Tokens, + Tokenizer); + yeccpars1([], {F, A}, State, States, Vstack) -> + case apply(F, A) of + {ok, Tokens, _Endline} -> + yeccpars1(Tokens, {F, A}, State, States, Vstack); + {eof, _Endline} -> + yeccpars1([], false, State, States, Vstack); + {error, Descriptor, _Endline} -> + {error, Descriptor} + end; + yeccpars1([], false, State, States, Vstack) -> + yeccpars2(State, '$end', States, Vstack, {'$end', 999999}, [], false). + + % For internal use only. + yeccerror(Token) -> + {error, + {element(2, Token), yecc_test, + [\"syntax error before: \", yecctoken2string(Token)]}}. + + yecctoken2string({atom, _, A}) -> io_lib:write(A); + yecctoken2string({integer,_,N}) -> io_lib:write(N); + yecctoken2string({float,_,F}) -> io_lib:write(F); + yecctoken2string({char,_,C}) -> io_lib:write_char(C); + yecctoken2string({var,_,V}) -> io_lib:format('~s', [V]); + yecctoken2string({string,_,S}) -> io_lib:write_string(S); + yecctoken2string({reserved_symbol, _, A}) -> io_lib:format('~w', [A]); + yecctoken2string({_Cat, _, Val}) -> io_lib:format('~w', [Val]); + yecctoken2string({'dot', _}) -> io_lib:format('~w', ['.']); + yecctoken2string({'$end', _}) -> + []; + yecctoken2string({Other, _}) when is_atom(Other) -> + io_lib:format('~w', [Other]); + yecctoken2string(Other) -> + io_lib:write(Other). +">>. + +otp_7945(doc) -> + "OTP-7945. A bug introduced in R13A."; +otp_7945(suite) -> []; +otp_7945(Config) when is_list(Config) -> + ?line {error,_} = erl_parse:parse([{atom,3,foo},{'.',2,9,9}]), + ok. + +improvements(suite) -> + [otp_7292, otp_7969]. + +otp_7292(doc) -> + "OTP-7292. Header declarations for edoc."; +otp_7292(suite) -> []; +otp_7292(Config) when is_list(Config) -> + Dir = ?privdir, + Filename = filename:join(Dir, "file.yrl"), + Parserfile1 = filename:join(Dir, "a file"), + + Contents = <<"Nonterminals nt. + Terminals t. + Rootsymbol nt. + Endsymbol e. + nt -> t : a bad code. + + Header \"%% copyright bla bla bla\" + \"%% @private\" \"%% foo\" + \"%% @author X.Y.\". + + Erlang code. + + %% @private + %% etc. + + foo() -> + bar. ">>, + + %% Check that correct line number is used in messages. + ?line ok = file:write_file(Filename, Contents), + ParserFile3 = [{parserfile, Parserfile1}], + Ret = [return, {report, true}], + ?line {ok, _, []} = yecc:file(Filename, ParserFile3 ++ Ret), + + %% Note: checking the line numbers. Changes when yeccpre.hrl changes. + fun() -> + SzYeccPre = yeccpre_size(), + ?line {error, + [{_,[{5,_,["syntax error before: ","bad"]}]}, + {_,[{L1,_,{undefined_function,{yeccpars2_2_,1}}}, + {L2,_,{bad_inline,{yeccpars2_2_,1}}}]}], + [{_,[{16,_,{unused_function,{foo,0}}}]}]} = + compile:file(Parserfile1, [basic_validation, return]), + ?line L1 = 34 + SzYeccPre, + ?line L2 = 41 + SzYeccPre + end(), + + YeccPre = filename:join(Dir, "yeccpre.hrl"), + ?line ok = file:write_file(YeccPre, + [<<"-export([parse/1, parse_and_scan/1, format_error/1]).\n">>, + yeccpre_v1_2()]), + Inc = [{includefile,YeccPre}], + ?line {ok, _, []} = yecc:file(Filename, ParserFile3 ++ Inc ++ Ret), + fun() -> + SzYeccPre = yeccpre_size(YeccPre), + ?line {error, + [{_,[{5,_,["syntax error before: ","bad"]}]}, + {_,[{L1,_,{undefined_function,{yeccpars2_2_,1}}}, + {L2,_,{bad_inline,{yeccpars2_2_,1}}}]}], + [{_,[{16,_,{unused_function,{foo,0}}}]}]} = + compile:file(Parserfile1, [basic_validation, return]), + ?line L1 = 33 + SzYeccPre, + ?line L2 = 40 + SzYeccPre + end(), + + file:delete(YeccPre), + file:delete(Parserfile1 ++ ".erl"), + file:delete(Filename), + + ok. + +yeccpre_v1_2() -> + <<" +parse(Tokens) -> + yeccpars0(Tokens, false). + +parse_and_scan({F, A}) -> % Fun or {M, F} + yeccpars0([], {F, A}); +parse_and_scan({M, F, A}) -> + yeccpars0([], {{M, F}, A}). + +format_error(Message) -> + case io_lib:deep_char_list(Message) of + true -> + Message; + _ -> + io_lib:write(Message) + end. + +-define(CODE_VERSION, \"1.2\"). + +yeccpars0(Tokens, MFA) -> + try yeccpars1(Tokens, MFA, 0, [], []) + catch + error: Error -> + Stacktrace = erlang:get_stacktrace(), + try yecc_error_type(Error, Stacktrace) of + {syntax_error, Token} -> + yeccerror(Token); + {missing_in_goto_table=Tag, State} -> + Desc = {State, Tag}, + erlang:raise(error, {yecc_bug, ?CODE_VERSION, Desc}, + Stacktrace); + {missing_in_goto_table=Tag, Symbol, State} -> + Desc = {Symbol, State, Tag}, + erlang:raise(error, {yecc_bug, ?CODE_VERSION, Desc}, + Stacktrace) + catch _:_ -> erlang:raise(error, Error, Stacktrace) + end; + throw: {error, {_Line, ?MODULE, _M}} = Error -> + Error % probably from return_error/2 + end. + +yecc_error_type(function_clause, [{?MODULE,F,[_,_,_,_,Token,_,_]} | _]) -> + \"yeccpars2\" ++ _ = atom_to_list(F), + {syntax_error, Token}; +yecc_error_type({case_clause,{State}}, [{?MODULE,yeccpars2,_}|_]) -> + %% Inlined goto-function + {missing_in_goto_table, State}; +yecc_error_type(function_clause, [{?MODULE,F,[State]}|_]) -> + \"yeccgoto_\" ++ SymbolL = atom_to_list(F), + {ok,[{atom,_,Symbol}]} = erl_scan:string(SymbolL), + {missing_in_goto_table, Symbol, State}. + +yeccpars1([Token | Tokens], Tokenizer, State, States, Vstack) -> + yeccpars2(State, element(1, Token), States, Vstack, Token, Tokens, + Tokenizer); +yeccpars1([], {F, A}, State, States, Vstack) -> + case apply(F, A) of + {ok, Tokens, _Endline} -> + yeccpars1(Tokens, {F, A}, State, States, Vstack); + {eof, _Endline} -> + yeccpars1([], false, State, States, Vstack); + {error, Descriptor, _Endline} -> + {error, Descriptor} + end; +yeccpars1([], false, State, States, Vstack) -> + yeccpars2(State, '$end', States, Vstack, {'$end', 999999}, [], false). + +yeccpars1(State1, State, States, Vstack, Stack1, [Token | Tokens], + Tokenizer) -> + yeccpars2(State, element(1, Token), [State1 | States], + [Stack1 | Vstack], Token, Tokens, Tokenizer); +yeccpars1(State1, State, States, Vstack, Stack1, [], {F, A}) -> + case apply(F, A) of + {ok, Tokens, _Endline} -> + yeccpars1(State1, State, States, Vstack, Stack1, Tokens, {F, A}); + {eof, _Endline} -> + yeccpars1(State1, State, States, Vstack, Stack1, [], false); + {error, Descriptor, _Endline} -> + {error, Descriptor} + end; +yeccpars1(State1, State, States, Vstack, Stack1, [], false) -> + yeccpars2(State, '$end', [State1 | States], [Stack1 | Vstack], + {'$end', 999999}, [], false). + +yeccerror(Token) -> + {error, + {element(2, Token), ?MODULE, + [\"syntax error before: \", yecctoken2string(Token)]}}. + +yecctoken2string({atom, _, A}) -> io_lib:write(A); +yecctoken2string({integer,_,N}) -> io_lib:write(N); +yecctoken2string({float,_,F}) -> io_lib:write(F); +yecctoken2string({char,_,C}) -> io_lib:write_char(C); +yecctoken2string({var,_,V}) -> io_lib:format('~s', [V]); +yecctoken2string({string,_,S}) -> io_lib:write_string(S); +yecctoken2string({reserved_symbol, _, A}) -> io_lib:format('~w', [A]); +yecctoken2string({_Cat, _, Val}) -> io_lib:format('~w', [Val]); +yecctoken2string({'dot', _}) -> io_lib:format('~w', ['.']); +yecctoken2string({'$end', _}) -> + []; +yecctoken2string({Other, _}) when is_atom(Other) -> + io_lib:format('~w', [Other]); +yecctoken2string(Other) -> + io_lib:write(Other). +">>. + +run(Config, Tests) -> + F = fun({N,P,Pre,E}) -> + case catch run_test(Config, P, Pre) of + E -> + ok; + Bad -> + ?t:format("~nTest ~p failed. Expected~n ~p~n" + "but got~n ~p~n", [N, E, Bad]), + fail() + end + end, + lists:foreach(F, Tests). + +otp_7969(doc) -> + "OTP-7969. Interface to the I/O protocol.."; +otp_7969(suite) -> []; +otp_7969(Config) when is_list(Config) -> + ?line {ok,Ts1,_} = + erl_scan:string("'foo\nbar'", {1,1}, [text]), + ?line {error,{2,_,["syntax error before: ",[]]}} = erl_parse:parse(Ts1), + + ?line {ok,Ts1_1,_} = erl_scan:string("'foo\nbar'", 1, [text]), + ?line {error,{2,_,["syntax error before: ",[]]}} = erl_parse:parse(Ts1_1), + + ?line {ok,Ts2,_EndLocation} = + erl_scan:string("'foo\nbar'", {1,1}, []), + %% Can't do better than report possibly wrong line: + ?line {error,{1,_,["syntax error before: ",[]]}} = erl_parse:parse(Ts2), + + ?line {ok, Ts11, _}=R1 = erl_scan:string("f() -> a."), + ?line F1 = fun() -> {ok,Ts11 ++ [{'$end',2}],2} end, + ?line{ok,{function,1,f,0,[{clause,1,[],[],[{atom,1,a}]}]}} = + erl_parse:parse_and_scan({F1, []}), + ?line F2 = fun() -> erl_scan:string("f() -> ,") end, + ?line {error,{1,erl_parse,_}} = erl_parse:parse_and_scan({F2, []}), + ?line F3 = fun() -> case erase(foo) of + bar -> + {ok,[{'$end',2}],3}; + undefined -> + put(foo,bar), R1 + end + end, + ?line {ok,{function,1,f,0,[{clause,1,[],[],[{atom,1,a}]}]}} = + erl_parse:parse_and_scan({F3,[]}), + F4 = fun() -> {error, {1, ?MODULE, bad}, 2} end, + ?line {error, {1,?MODULE,bad}} = erl_parse:parse_and_scan({F4, []}), + F5 = fun() -> {eof, 3} end, + ?line {error,{3,erl_parse,_}} = erl_parse:parse_and_scan({F5, []}), + ?line {error,{999999,erl_parse,_}} = erl_parse:parse([]), + ?line {ok, Ts21, EL} = erl_scan:string("f() -> a; g() -> b. ", {1,1}), + ?line F6 = fun() -> {ok, Ts21, EL} end, + ?line {error,{{1,11},erl_parse,_}} = erl_parse:parse_and_scan({F6, []}), + ok. + +yeccpre_size() -> + yeccpre_size(default_yeccpre()). + +yeccpre_size(File) -> + n_lines(File). + +default_yeccpre() -> + filename:join([code:lib_dir(parsetools),"include","yeccpre.hrl"]). + +n_lines(File) -> + {ok, Bin} = file:read_file(File), + length([C || C=$\n <- binary_to_list(Bin)]). + +run_test(Config, Def, Pre) -> + %% io:format("testing ~s~n", [binary_to_list(Def)]), + DefFile = 'yecc_test.yrl', + Filename = 'yecc_test.erl', + DataDir = ?privdir, + YrlFile = filename:join(DataDir, DefFile), + ErlFile = filename:join(DataDir, Filename), + Opts = [return, warn_unused_vars,{outdir,DataDir}], + ok = file:write_file(YrlFile, Def), + YOpts = [return, {report, false} | + case Pre of + default -> + []; + _ -> + [{includefile,Pre}] + end], + P0 = pps(), + YRet = yecc:file(YrlFile, [verbose | YOpts]), + case {pps(), YRet} of + {P0, {ok, _Outfile, _YWs}} -> + case compile:file(ErlFile, Opts) of + {ok, _M, _Ws} -> + AbsFile = filename:rootname(ErlFile, ".erl"), + Mod = yecc_test, + code:purge(Mod), + code:load_abs(AbsFile, Mod), + Mod:t(); + %% warnings(ErlFile, Ws); + {error, [{ErlFile,Es}], []} -> {error, Es, []}; + {error, [{ErlFile,Es}], [{ErlFile,Ws}]} -> {error, Es, Ws}; + Error -> Error + end; + {P0, {error, [{YrlFile,YEs}], []}} -> {error, YEs, []}; + {P0, {error, [{YrlFile,YEs}], [{YrlFile,YWs}]}} -> {error, YEs, YWs}; + {P0, YError} -> YError; + {P, _} -> + io:format("failure, got ~p~n, expected ~p\n", [P, P0]), + fail() + end. + +extract(File, {error, Es, Ws}) -> + {errors, extract(File, Es), extract(File, Ws)}; +extract(File, Ts) -> + lists:append([T || {F, T} <- Ts, F =:= File]). + +pps() -> + {port_list(), process_list()}. + +port_list() -> + [{P,safe_second_element(erlang:port_info(P, name))} || P <- erlang:ports()]. + +process_list() -> + [{P,process_info(P, registered_name), + safe_second_element(process_info(P, initial_call))} || + P <- processes(), is_process_alive(P)]. + +safe_second_element({_,Info}) -> Info; +safe_second_element(Other) -> Other. + +fail() -> + ?t:fail(). |