From 4c2b4846faece8e9c3d3a023698c04eb194bbab5 Mon Sep 17 00:00:00 2001 From: Hans Bolinder Date: Thu, 28 Oct 2010 14:37:44 +0200 Subject: Fix epp bug concerning the file attribute and file inclusion Cover did not collect coverage data for files such as Yecc parses containing include directives. The bug has been fixed by modifying epp, the Erlang Code Preprocessor. --- lib/stdlib/src/epp.erl | 43 +++++++++++++++++++++++++++++-------------- lib/stdlib/test/epp_SUITE.erl | 38 ++++++++++++++++++++++++++++++++++++-- 2 files changed, 65 insertions(+), 16 deletions(-) (limited to 'lib/stdlib') diff --git a/lib/stdlib/src/epp.erl b/lib/stdlib/src/epp.erl index 81b2431f40..e5ccaddbb4 100644 --- a/lib/stdlib/src/epp.erl +++ b/lib/stdlib/src/epp.erl @@ -33,7 +33,9 @@ %% Epp state record. -record(epp, {file, %Current file location, %Current location + delta, %Offset from Location (-file) name="", %Current file name + name2="", %-"-, modified by -file istk=[], %Ifdef stack sstk=[], %State stack path=[], %Include-path @@ -234,8 +236,8 @@ init_server(Pid, Name, File, AtLocation, Path, Pdm, Pre) -> case user_predef(Pdm, Ms0) of {ok,Ms1} -> epp_reply(Pid, {ok,self()}), - St = #epp{file=File, location=AtLocation, name=Name, - path=Path, macs=Ms1, pre_opened = Pre}, + St = #epp{file=File, location=AtLocation, delta=0, name=Name, + name2=Name, path=Path, macs=Ms1, pre_opened = Pre}, From = wait_request(St), enter_file_reply(From, Name, AtLocation, AtLocation), wait_req_scan(St); @@ -358,8 +360,8 @@ enter_file2(NewF, Pname, From, St, AtLocation, ExtraPath) -> enter_file_reply(From, Pname, Loc, AtLocation), Ms = dict:store({atom,'FILE'}, {none,[{string,Loc,Pname}]}, St#epp.macs), Path = St#epp.path ++ ExtraPath, - #epp{location=Loc,file=NewF, - name=Pname,sstk=[St|St#epp.sstk],path=Path,macs=Ms}. + #epp{file=NewF,location=Loc,name=Pname,delta=0, + sstk=[St|St#epp.sstk],path=Path,macs=Ms}. enter_file_reply(From, Name, Location, AtLocation) -> Attr = loc_attr(AtLocation), @@ -391,14 +393,23 @@ leave_file(From, St) -> case St#epp.sstk of [OldSt|Sts] -> close_file(St), - enter_file_reply(From, OldSt#epp.name, - OldSt#epp.location, OldSt#epp.location), + #epp{location=OldLoc, delta=Delta, name=OldName, + name2=OldName2} = OldSt, + CurrLoc = add_line(OldLoc, Delta), Ms = dict:store({atom,'FILE'}, - {none, - [{string,OldSt#epp.location, - OldSt#epp.name}]}, + {none,[{string,CurrLoc,OldName2}]}, St#epp.macs), - wait_req_scan(OldSt#epp{sstk=Sts,macs=Ms}); + NextSt = OldSt#epp{sstk=Sts,macs=Ms}, + enter_file_reply(From, OldName, CurrLoc, CurrLoc), + case OldName2 =:= OldName of + true -> + From; + false -> + NFrom = wait_request(NextSt), + enter_file_reply(NFrom, OldName2, OldLoc, + neg_line(CurrLoc)) + end, + wait_req_scan(NextSt); [] -> epp_reply(From, {eof,St#epp.location}), wait_req_scan(St) @@ -768,7 +779,8 @@ scan_file([{'(',_Llp},{string,_Ls,Name},{',',_Lc},{integer,_Li,Ln},{')',_Lrp}, Ms = dict:store({atom,'FILE'}, {none,[{string,1,Name}]}, St#epp.macs), Locf = loc(Tf), NewLoc = new_location(Ln, St#epp.location, Locf), - wait_req_scan(St#epp{name=Name,location=NewLoc,macs=Ms}); + Delta = abs(get_line(element(2, Tf)))-Ln + St#epp.delta, + wait_req_scan(St#epp{name2=Name,location=NewLoc,delta=Delta,macs=Ms}); scan_file(_Toks, Tf, From, St) -> epp_reply(From, {error,{loc(Tf),epp,{bad,file}}}), wait_req_scan(St). @@ -1132,6 +1144,9 @@ neg_line(L) -> abs_line(L) -> erl_scan:set_attribute(line, L, fun(Line) -> abs(Line) end). +add_line(L, Offset) -> + erl_scan:set_attribute(line, L, fun(Line) -> Line+Offset end). + start_loc(Line) when is_integer(Line) -> 1; start_loc({_Line, _Column}) -> @@ -1191,10 +1206,10 @@ interpret_file_attr([{attribute,Loc,file,{File,Line}}=Form | Forms], %% -include or -include_lib % true = L =:= Line, case Fs of - [_, Delta1, File | Fs1] -> % end of included file - [Form | interpret_file_attr(Forms, Delta1, [File | Fs1])]; + [_, File | Fs1] -> % end of included file + [Form | interpret_file_attr(Forms, 0, [File | Fs1])]; _ -> % start of included file - [Form | interpret_file_attr(Forms, 0, [File, Delta | Fs])] + [Form | interpret_file_attr(Forms, 0, [File | Fs])] end end; interpret_file_attr([Form0 | Forms], Delta, Fs) -> diff --git a/lib/stdlib/test/epp_SUITE.erl b/lib/stdlib/test/epp_SUITE.erl index e31dfdd764..e9fb932632 100644 --- a/lib/stdlib/test/epp_SUITE.erl +++ b/lib/stdlib/test/epp_SUITE.erl @@ -24,7 +24,7 @@ variable/1, variable_1/1, otp_4870/1, otp_4871/1, otp_5362/1, pmod/1, not_circular/1, skip_header/1, otp_6277/1, otp_7702/1, otp_8130/1, overload_mac/1, otp_8388/1, otp_8470/1, otp_8503/1, - otp_8562/1, otp_8665/1]). + otp_8562/1, otp_8665/1, otp_8911/1]). -export([epp_parse_erl_form/2]). @@ -64,7 +64,7 @@ all(doc) -> all(suite) -> [rec_1, upcase_mac, predef_mac, variable, otp_4870, otp_4871, otp_5362, pmod, not_circular, skip_header, otp_6277, otp_7702, otp_8130, - overload_mac, otp_8388, otp_8470, otp_8503, otp_8562, otp_8665]. + overload_mac, otp_8388, otp_8470, otp_8503, otp_8562, otp_8665, otp_8911]. rec_1(doc) -> ["Recursive macros hang or crash epp (OTP-1398)."]; @@ -1197,6 +1197,40 @@ otp_8562(Config) when is_list(Config) -> ?line [] = compile(Config, Cs), ok. +otp_8911(doc) -> + ["OTP-8911. -file and file inclusion bug"]; +otp_8911(suite) -> + []; +otp_8911(Config) when is_list(Config) -> + ?line {ok, CWD} = file:get_cwd(), + ?line ok = file:set_cwd(?config(priv_dir, Config)), + + File = "i.erl", + Cont = <<"-module(i). + -compile(export_all). + -file(\"fil1\", 100). + -include(\"i1.erl\"). + t() -> + a. + ">>, + ?line ok = file:write_file(File, Cont), + Incl = <<"-file(\"fil2\", 35). + t1() -> + b. + ">>, + File1 = "i1.erl", + ?line ok = file:write_file(File1, Incl), + + ?line {ok, i} = cover:compile(File), + ?line a = i:t(), + ?line {ok,[{{i,6},1}]} = cover:analyse(i, calls, line), + ?line cover:stop(), + + file:delete(File), + file:delete(File1), + ?line file:set_cwd(CWD), + ok. + otp_8665(doc) -> ["OTP-8665. Bugfix premature end."]; otp_8665(suite) -> -- cgit v1.2.3