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-rw-r--r--lib/stdlib/src/epp.erl55
1 files changed, 29 insertions, 26 deletions
diff --git a/lib/stdlib/src/epp.erl b/lib/stdlib/src/epp.erl
index f144cbb938..81b2431f40 100644
--- a/lib/stdlib/src/epp.erl
+++ b/lib/stdlib/src/epp.erl
@@ -111,6 +111,8 @@ format_error({bad,W}) ->
io_lib:format("badly formed '~s'", [W]);
format_error(missing_parenthesis) ->
io_lib:format("badly formed define: missing closing right parenthesis",[]);
+format_error(premature_end) ->
+ "premature end";
format_error({call,What}) ->
io_lib:format("illegal macro call '~s'",[What]);
format_error({undefined,M,none}) ->
@@ -163,7 +165,7 @@ parse_file(Epp) ->
case normalize_typed_record_fields(Fields) of
{typed, NewFields} ->
[{attribute, La, record, {Record, NewFields}},
- {attribute, La, type,
+ {attribute, La, type,
{{record, Record}, Fields, []}}
|parse_file(Epp)];
not_typed ->
@@ -188,7 +190,7 @@ normalize_typed_record_fields([], NewFields, Typed) ->
true -> {typed, lists:reverse(NewFields)};
false -> not_typed
end;
-normalize_typed_record_fields([{typed_record_field,Field,_}|Rest],
+normalize_typed_record_fields([{typed_record_field,Field,_}|Rest],
NewFields, _Typed) ->
normalize_typed_record_fields(Rest, [Field|NewFields], true);
normalize_typed_record_fields([Field|Rest], NewFields, Typed) ->
@@ -324,7 +326,7 @@ wait_req_scan(St) ->
wait_req_skip(St, Sis) ->
From = wait_request(St),
skip_toks(From, St, Sis).
-
+
%% enter_file(Path, FileName, IncludeToken, From, EppState)
%% leave_file(From, EppState)
%% Handle entering and leaving included files. Notify caller when the
@@ -380,16 +382,16 @@ file_name(N) when is_atom(N) ->
leave_file(From, St) ->
case St#epp.istk of
- [I|Cis] ->
+ [I|Cis] ->
epp_reply(From,
- {error,{St#epp.location,epp,
+ {error,{St#epp.location,epp,
{illegal,"unterminated",I}}}),
leave_file(wait_request(St),St#epp{istk=Cis});
[] ->
case St#epp.sstk of
[OldSt|Sts] ->
close_file(St),
- enter_file_reply(From, OldSt#epp.name,
+ enter_file_reply(From, OldSt#epp.name,
OldSt#epp.location, OldSt#epp.location),
Ms = dict:store({atom,'FILE'},
{none,
@@ -491,9 +493,9 @@ scan_extends(_Ts, _As, Ms) -> Ms.
%% scan_define(Tokens, DefineToken, From, EppState)
-scan_define([{'(',_Lp},{Type,_Lm,M}=Mac,{',',_Lc}|Toks], _Def, From, St)
+scan_define([{'(',_Lp},{Type,_Lm,M}=Mac,{',',Lc}|Toks], _Def, From, St)
when Type =:= atom; Type =:= var ->
- case catch macro_expansion(Toks) of
+ case catch macro_expansion(Toks, Lc) of
Expansion when is_list(Expansion) ->
case dict:find({atom,M}, St#epp.macs) of
{ok, Defs} when is_list(Defs) ->
@@ -608,7 +610,7 @@ scan_undef(_Toks, Undef, From, St) ->
%% scan_include(Tokens, IncludeToken, From, St)
-scan_include([{'(',_Llp},{string,_Lf,NewName0},{')',_Lrp},{dot,_Ld}], Inc,
+scan_include([{'(',_Llp},{string,_Lf,NewName0},{')',_Lrp},{dot,_Ld}], Inc,
From, St) ->
NewName = expand_var(NewName0),
enter_file(St#epp.path, NewName, Inc, From, St);
@@ -644,7 +646,7 @@ scan_include_lib([{'(',_Llp},{string,_Lf,NewName0},{')',_Lrp},{dot,_Ld}],
case file:open(LibName, [read]) of
{ok,NewF} ->
ExtraPath = [filename:dirname(LibName)],
- wait_req_scan(enter_file2(NewF, LibName, From,
+ wait_req_scan(enter_file2(NewF, LibName, From,
St, Loc, ExtraPath));
{error,_E2} ->
epp_reply(From,
@@ -773,7 +775,7 @@ scan_file(_Toks, Tf, From, St) ->
new_location(Ln, Le, Lf) when is_integer(Lf) ->
Ln+(Le-Lf);
-new_location(Ln, {Le,_}, {Lf,_}) ->
+new_location(Ln, {Le,_}, {Lf,_}) ->
{Ln+(Le-Lf),1}.
%% skip_toks(From, EppState, SkipIstack)
@@ -814,22 +816,23 @@ skip_else(_Else, From, St, Sis) ->
skip_toks(From, St, Sis).
%% macro_pars(Tokens, ArgStack)
-%% macro_expansion(Tokens)
+%% macro_expansion(Tokens, Line)
%% Extract the macro parameters and the expansion from a macro definition.
-macro_pars([{')',_Lp}, {',',_Ld}|Ex], Args) ->
- {ok, {lists:reverse(Args), macro_expansion(Ex)}};
-macro_pars([{var,_,Name}, {')',_Lp}, {',',_Ld}|Ex], Args) ->
+macro_pars([{')',_Lp}, {',',Ld}|Ex], Args) ->
+ {ok, {lists:reverse(Args), macro_expansion(Ex, Ld)}};
+macro_pars([{var,_,Name}, {')',_Lp}, {',',Ld}|Ex], Args) ->
false = lists:member(Name, Args), %Prolog is nice
- {ok, {lists:reverse([Name|Args]), macro_expansion(Ex)}};
+ {ok, {lists:reverse([Name|Args]), macro_expansion(Ex, Ld)}};
macro_pars([{var,_L,Name}, {',',_}|Ts], Args) ->
- false = lists:member(Name, Args),
+ false = lists:member(Name, Args),
macro_pars(Ts, [Name|Args]).
-macro_expansion([{')',_Lp},{dot,_Ld}]) -> [];
-macro_expansion([{dot,Ld}]) -> throw({error,Ld,missing_parenthesis});
-macro_expansion([T|Ts]) ->
- [T|macro_expansion(Ts)].
+macro_expansion([{')',_Lp},{dot,_Ld}], _L0) -> [];
+macro_expansion([{dot,Ld}], _L0) -> throw({error,Ld,missing_parenthesis});
+macro_expansion([T|Ts], _L0) ->
+ [T|macro_expansion(Ts, element(2, T))];
+macro_expansion([], L0) -> throw({error,L0,premature_end}).
%% expand_macros(Tokens, Macros)
%% expand_macro(Tokens, MacroToken, RestTokens)
@@ -1084,11 +1087,11 @@ epp_reply(From, Rep) ->
wait_epp_reply(Epp, Mref) ->
receive
- {epp_reply,Epp,Rep} ->
+ {epp_reply,Epp,Rep} ->
erlang:demonitor(Mref),
receive {'DOWN',Mref,_,_,_} -> ok after 0 -> ok end,
Rep;
- {'DOWN',Mref,_,_,E} ->
+ {'DOWN',Mref,_,_,E} ->
receive {epp_reply,Epp,Rep} -> Rep
after 0 -> exit(E)
end
@@ -1145,7 +1148,7 @@ get_line({Line,_Column}) ->
%% mainly aimed at yecc, the parser generator, which uses the -file
%% attribute to get correct lines in messages referring to code
%% supplied by the user (actions etc in .yrl files).
-%%
+%%
%% In a perfect world (read: perfectly implemented applications such
%% as Xref, Cover, Debugger, etc.) it would not be necessary to
%% distinguish -file attributes from epp and the input file. The
@@ -1165,7 +1168,7 @@ get_line({Line,_Column}) ->
%% have been output by epp (corresponding to -include and
%% -include_lib) are kept, but the user's -file attributes are
%% removed. This seems sufficient for now.
-%%
+%%
%% It turns out to be difficult to distinguish -file attributes in the
%% input file from the ones added by epp unless some action is taken.
%% The (less than perfect) solution employed is to let epp assign
@@ -1177,7 +1180,7 @@ get_line({Line,_Column}) ->
interpret_file_attribute(Forms) ->
interpret_file_attr(Forms, 0, []).
-interpret_file_attr([{attribute,Loc,file,{File,Line}}=Form | Forms],
+interpret_file_attr([{attribute,Loc,file,{File,Line}}=Form | Forms],
Delta, Fs) ->
{line, L} = erl_scan:attributes_info(Loc, line),
if
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 02:31:38 +0000