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authorHans Bolinder <[email protected]>2014-03-21 15:34:18 +0100
committerHans Bolinder <[email protected]>2014-03-25 09:18:02 +0100
commit83b6daef8d52f69c3b583bcc67c0c11fb8dcba0b (patch)
tree8134560fac9ce643b173c9196cf350f01c691a66 /lib/stdlib/test
parenta60a76c7e813eef94e14b377af37e4fc6774ff37 (diff)
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stdlib: Generalize erl_parse:abstract/2
The 'encoding' option of erl_parse:abstract/2 has been extended to include 'none' and a callback function (a predicate). The rationale is that a more general means of determining what integer lists are to be represented as strings may help readability when generating Erlang code given input in some other encoding than Latin-1 or UTF-8.
Diffstat (limited to 'lib/stdlib/test')
-rw-r--r--lib/stdlib/test/erl_scan_SUITE.erl26
1 files changed, 23 insertions, 3 deletions
diff --git a/lib/stdlib/test/erl_scan_SUITE.erl b/lib/stdlib/test/erl_scan_SUITE.erl
index 447e159cd4..35067e8116 100644
--- a/lib/stdlib/test/erl_scan_SUITE.erl
+++ b/lib/stdlib/test/erl_scan_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1998-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2014. 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
@@ -21,7 +21,7 @@
init_per_group/2,end_per_group/2]).
-export([ error_1/1, error_2/1, iso88591/1, otp_7810/1, otp_10302/1,
- otp_10990/1, otp_10992/1]).
+ otp_10990/1, otp_10992/1, otp_11807/1]).
-import(lists, [nth/2,flatten/1]).
-import(io_lib, [print/1]).
@@ -60,7 +60,8 @@ end_per_testcase(_Case, Config) ->
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [{group, error}, iso88591, otp_7810, otp_10302, otp_10990, otp_10992].
+ [{group, error}, iso88591, otp_7810, otp_10302, otp_10990, otp_10992,
+ otp_11807].
groups() ->
[{error, [], [error_1, error_2]}].
@@ -1144,6 +1145,25 @@ otp_10992(Config) when is_list(Config) ->
erl_parse:abstract([$A,42.0], [{encoding,utf8}]),
ok.
+otp_11807(doc) ->
+ "OTP-11807. Generalize erl_parse:abstract/2.";
+otp_11807(suite) ->
+ [];
+otp_11807(Config) when is_list(Config) ->
+ {cons,0,{integer,0,97},{cons,0,{integer,0,98},{nil,0}}} =
+ erl_parse:abstract("ab", [{encoding,none}]),
+ {cons,0,{integer,0,-1},{nil,0}} =
+ erl_parse:abstract([-1], [{encoding,latin1}]),
+ ASCII = fun(I) -> I >= 0 andalso I < 128 end,
+ {string,0,"xyz"} = erl_parse:abstract("xyz", [{encoding,ASCII}]),
+ {cons,0,{integer,0,228},{nil,0}} =
+ erl_parse:abstract([228], [{encoding,ASCII}]),
+ {cons,0,{integer,0,97},{atom,0,a}} =
+ erl_parse:abstract("a"++a, [{encoding,latin1}]),
+ {'EXIT', {{badarg,bad},_}} = % minor backward incompatibility
+ (catch erl_parse:abstract("string", [{encoding,bad}])),
+ ok.
+
test_string(String, Expected) ->
{ok, Expected, _End} = erl_scan:string(String),
test(String).