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authorMicael Karlberg <[email protected]>2011-03-07 13:23:00 +0100
committerMicael Karlberg <[email protected]>2011-03-07 13:23:00 +0100
commit0674fe5dfde78dd611ee17d97541c4f02fddf774 (patch)
treeef23074d46e14a2af8b983315986d97226aca419 /lib/stdlib/src/io.erl
parentd9ca1a4e66bed40b4bf4ed7b9e734192d6f6d00a (diff)
parent29a6063aadd2b3b81442a711ee262ff347ca88fc (diff)
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Merge branch 'dev' into bmk/snmp/snmpc/OTP-9004
Diffstat (limited to 'lib/stdlib/src/io.erl')
-rw-r--r--lib/stdlib/src/io.erl38
1 files changed, 14 insertions, 24 deletions
diff --git a/lib/stdlib/src/io.erl b/lib/stdlib/src/io.erl
index 1d0f9374bc..3efa68ca09 100644
--- a/lib/stdlib/src/io.erl
+++ b/lib/stdlib/src/io.erl
@@ -39,6 +39,8 @@
-type device() :: atom() | pid().
-type prompt() :: atom() | string().
+-type error_description() :: term(). % Whatever the io-server sends.
+-type request_error() :: {'error',error_description()}.
%% XXX: Some uses of line() in this file may need to read erl_scan:location()
-type line() :: pos_integer().
@@ -53,26 +55,12 @@
to_tuple(T) when is_tuple(T) -> T;
to_tuple(T) -> {T}.
-%% Problem: the variables Other, Name and Args may collide with surrounding
-%% ones.
-%% Give extra args to macro, being the variables to use.
--define(O_REQUEST(Io, Request),
- case request(Io, Request) of
- {error, Reason} ->
- [Name | Args] = tuple_to_list(to_tuple(Request)),
- erlang:error(conv_reason(Name, Reason), [Name, Io | Args]);
- Other ->
- Other
- end).
-
o_request(Io, Request, Func) ->
case request(Io, Request) of
{error, Reason} ->
[_Name | Args] = tuple_to_list(to_tuple(Request)),
- {'EXIT',{undef,[_Current|Mfas]}} = (catch erlang:error(undef)),
- MFA = {io, Func, [Io | Args]},
- exit({conv_reason(Func, Reason),[MFA|Mfas]});
-% erlang:error(conv_reason(Name, Reason), [Name, Io | Args]);
+ {'EXIT',{get_stacktrace,[_Current|Mfas]}} = (catch erlang:error(get_stacktrace)),
+ erlang:raise(error, conv_reason(Func, Reason), [{io, Func, [Io | Args]}|Mfas]);
Other ->
Other
end.
@@ -299,32 +287,32 @@ format(Io, Format, Args) ->
%% Scanning Erlang code.
--spec scan_erl_exprs(prompt()) -> erl_scan:tokens_result().
+-spec scan_erl_exprs(prompt()) -> erl_scan:tokens_result() | request_error().
scan_erl_exprs(Prompt) ->
scan_erl_exprs(default_input(), Prompt, 1).
--spec scan_erl_exprs(device(), prompt()) -> erl_scan:tokens_result().
+-spec scan_erl_exprs(device(), prompt()) -> erl_scan:tokens_result() | request_error().
scan_erl_exprs(Io, Prompt) ->
scan_erl_exprs(Io, Prompt, 1).
--spec scan_erl_exprs(device(), prompt(), line()) -> erl_scan:tokens_result().
+-spec scan_erl_exprs(device(), prompt(), line()) -> erl_scan:tokens_result() | request_error().
scan_erl_exprs(Io, Prompt, Pos0) ->
request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}).
--spec scan_erl_form(prompt()) -> erl_scan:tokens_result().
+-spec scan_erl_form(prompt()) -> erl_scan:tokens_result() | request_error().
scan_erl_form(Prompt) ->
scan_erl_form(default_input(), Prompt, 1).
--spec scan_erl_form(device(), prompt()) -> erl_scan:tokens_result().
+-spec scan_erl_form(device(), prompt()) -> erl_scan:tokens_result() | request_error().
scan_erl_form(Io, Prompt) ->
scan_erl_form(Io, Prompt, 1).
--spec scan_erl_form(device(), prompt(), line()) -> erl_scan:tokens_result().
+-spec scan_erl_form(device(), prompt(), line()) -> erl_scan:tokens_result() | request_error().
scan_erl_form(Io, Prompt, Pos0) ->
request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}).
@@ -335,7 +323,8 @@ scan_erl_form(Io, Prompt, Pos0) ->
-type parse_ret() :: {'ok', erl_parse_expr_list(), line()}
| {'eof', line()}
- | {'error', erl_scan:error_info(), line()}.
+ | {'error', erl_scan:error_info(), line()}
+ | request_error().
-spec parse_erl_exprs(prompt()) -> parse_ret().
@@ -364,7 +353,8 @@ parse_erl_exprs(Io, Prompt, Pos0) ->
-type parse_form_ret() :: {'ok', erl_parse_absform(), line()}
| {'eof', line()}
- | {'error', erl_scan:error_info(), line()}.
+ | {'error', erl_scan:error_info(), line()}
+ | request_error().
-spec parse_erl_form(prompt()) -> parse_form_ret().