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authorAnthony Ramine <[email protected]>2013-03-18 13:20:07 +0100
committerAnthony Ramine <[email protected]>2014-06-16 20:41:53 +0200
commit29b264e02f2dcd6b76fcf609387189e4048524b5 (patch)
tree48c78567d427a58658d2afe638e238061ee69c80 /lib/stdlib
parent07b8f441ca711f9812fad9e9115bab3c3aa92f79 (diff)
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Properly track column numbers in erl_scan
This is a partial revert of 05c4d31b2c5c5f6ade7d91b55c598fe7fa58e509 in which a new macro `?STR()` was introduced. This macro shouldn't be used in scan_number/6 and scan_based_int/6 because the length of the string is needed when computing column numbers through tok3/8.
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/src/erl_scan.erl4
-rw-r--r--lib/stdlib/test/erl_scan_SUITE.erl246
2 files changed, 146 insertions, 104 deletions
diff --git a/lib/stdlib/src/erl_scan.erl b/lib/stdlib/src/erl_scan.erl
index ae59d5f44f..6fd6bb888b 100644
--- a/lib/stdlib/src/erl_scan.erl
+++ b/lib/stdlib/src/erl_scan.erl
@@ -1075,7 +1075,7 @@ scan_number([$#|Cs]=Cs0, St, Line, Col, Toks, Ncs0) ->
Ncs = lists:reverse(Ncs0),
case catch list_to_integer(Ncs) of
B when B >= 2, B =< 1+$Z-$A+10 ->
- Bcs = ?STR(St, Ncs++[$#]),
+ Bcs = Ncs++[$#],
scan_based_int(Cs, St, Line, Col, Toks, {B,[],Bcs});
B ->
Len = length(Ncs),
@@ -1108,7 +1108,7 @@ scan_based_int(Cs, St, Line, Col, Toks, {B,Ncs0,Bcs}) ->
Ncs = lists:reverse(Ncs0),
case catch erlang:list_to_integer(Ncs, B) of
N when is_integer(N) ->
- tok3(Cs, St, Line, Col, Toks, integer, ?STR(St, Bcs++Ncs), N);
+ tok3(Cs, St, Line, Col, Toks, integer, Bcs++Ncs, N);
_ ->
Len = length(Bcs)+length(Ncs),
Ncol = incr_column(Col, Len),
diff --git a/lib/stdlib/test/erl_scan_SUITE.erl b/lib/stdlib/test/erl_scan_SUITE.erl
index 35067e8116..9be9f641c8 100644
--- a/lib/stdlib/test/erl_scan_SUITE.erl
+++ b/lib/stdlib/test/erl_scan_SUITE.erl
@@ -204,20 +204,20 @@ reserved_words() ->
[begin
?line {RW, true} = {RW, erl_scan:reserved_word(RW)},
S = atom_to_list(RW),
- Ts = [{RW,1}],
+ Ts = [{RW,{1,1}}],
?line test_string(S, Ts)
end || RW <- L],
ok.
atoms() ->
- ?line test_string("a
- b", [{atom,1,a},{atom,2,b}]),
- ?line test_string("'a b'", [{atom,1,'a b'}]),
- ?line test_string("a", [{atom,1,a}]),
- ?line test_string("a@2", [{atom,1,a@2}]),
- ?line test_string([39,65,200,39], [{atom,1,'AÈ'}]),
- ?line test_string("ärlig östen", [{atom,1,ärlig},{atom,1,östen}]),
+ test_string("a
+ b", [{atom,{1,1},a},{atom,{2,18},b}]),
+ test_string("'a b'", [{atom,{1,1},'a b'}]),
+ test_string("a", [{atom,{1,1},a}]),
+ test_string("a@2", [{atom,{1,1},a@2}]),
+ test_string([39,65,200,39], [{atom,{1,1},'AÈ'}]),
+ test_string("ärlig östen", [{atom,{1,1},ärlig},{atom,{1,7},östen}]),
?line {ok,[{atom,_,'$a'}],{1,6}} =
erl_scan:string("'$\\a'", {1,1}),
?line test("'$\\a'"),
@@ -230,7 +230,7 @@ punctuations() ->
%% One token at a time:
[begin
W = list_to_atom(S),
- Ts = [{W,1}],
+ Ts = [{W,{1,1}}],
?line test_string(S, Ts)
end || S <- L],
Three = ["/=:=", "<=:=", "==:=", ">=:="], % three tokens...
@@ -246,53 +246,60 @@ punctuations() ->
[begin
W1 = list_to_atom(S1),
W2 = list_to_atom(S2),
- Ts = [{W1,1},{W2,1}],
+ Ts = [{W1,{1,1}},{W2,{1,-L2+1}}],
?line test_string(S, Ts)
- end || {S,[{_,S1,S2}|_]} <- SL],
+ end || {S,[{L2,S1,S2}|_]} <- SL],
- PTs1 = [{'!',1},{'(',1},{')',1},{',',1},{';',1},{'=',1},{'[',1},
- {']',1},{'{',1},{'|',1},{'}',1}],
+ PTs1 = [{'!',{1,1}},{'(',{1,2}},{')',{1,3}},{',',{1,4}},{';',{1,5}},
+ {'=',{1,6}},{'[',{1,7}},{']',{1,8}},{'{',{1,9}},{'|',{1,10}},
+ {'}',{1,11}}],
?line test_string("!(),;=[]{|}", PTs1),
- PTs2 = [{'#',1},{'&',1},{'*',1},{'+',1},{'/',1},
- {':',1},{'<',1},{'>',1},{'?',1},{'@',1},
- {'\\',1},{'^',1},{'`',1},{'~',1}],
+ PTs2 = [{'#',{1,1}},{'&',{1,2}},{'*',{1,3}},{'+',{1,4}},{'/',{1,5}},
+ {':',{1,6}},{'<',{1,7}},{'>',{1,8}},{'?',{1,9}},{'@',{1,10}},
+ {'\\',{1,11}},{'^',{1,12}},{'`',{1,13}},{'~',{1,14}}],
?line test_string("#&*+/:<>?@\\^`~", PTs2),
- ?line test_string(".. ", [{'..',1}]),
- ?line test("1 .. 2"),
- ?line test_string("...", [{'...',1}]),
+ test_string(".. ", [{'..',{1,1}}]),
+ test_string("1 .. 2",
+ [{integer,{1,1},1},{'..',{1,3}},{integer,{1,6},2}]),
+ test_string("...", [{'...',{1,1}}]),
ok.
comments() ->
?line test("a %%\n b"),
?line {ok,[],1} = erl_scan:string("%"),
?line test("a %%\n b"),
- ?line {ok,[{atom,_,a},{atom,_,b}],{2,3}} =
+ {ok,[{atom,{1,1},a},{atom,{2,2},b}],{2,3}} =
erl_scan:string("a %%\n b",{1,1}),
- ?line {ok,[{atom,_,a},{comment,_,"%%"},{atom,_,b}],{2,3}} =
+ {ok,[{atom,{1,1},a},{comment,{1,3},"%%"},{atom,{2,2},b}],{2,3}} =
erl_scan:string("a %%\n b",{1,1}, [return_comments]),
- ?line {ok,[{atom,_,a},
- {white_space,_," "},
- {white_space,_,"\n "},
- {atom,_,b}],
- {2,3}} =
+ {ok,[{atom,{1,1},a},
+ {white_space,{1,2}," "},
+ {white_space,{1,5},"\n "},
+ {atom,{2,2},b}],
+ {2,3}} =
erl_scan:string("a %%\n b",{1,1},[return_white_spaces]),
- ?line {ok,[{atom,_,a},
- {white_space,_," "},
- {comment,_,"%%"},
- {white_space,_,"\n "},
- {atom,_,b}],
- {2,3}} = erl_scan:string("a %%\n b",{1,1},[return]),
+ {ok,[{atom,{1,1},a},
+ {white_space,{1,2}," "},
+ {comment,{1,3},"%%"},
+ {white_space,{1,5},"\n "},
+ {atom,{2,2},b}],
+ {2,3}} = erl_scan:string("a %%\n b",{1,1},[return]),
ok.
errors() ->
?line {error,{1,erl_scan,{string,$',"qa"}},1} = erl_scan:string("'qa"), %'
+ {error,{{1,1},erl_scan,{string,$',"qa"}},{1,4}} = %'
+ erl_scan:string("'qa", {1,1}, []), %'
?line {error,{1,erl_scan,{string,$","str"}},1} = %"
erl_scan:string("\"str"), %"
+ {error,{{1,1},erl_scan,{string,$","str"}},{1,5}} = %"
+ erl_scan:string("\"str", {1,1}, []), %"
?line {error,{1,erl_scan,char},1} = erl_scan:string("$"),
- ?line test_string([34,65,200,34], [{string,1,"AÈ"}]),
- ?line test_string("\\", [{'\\',1}]),
+ {error,{{1,1},erl_scan,char},{1,2}} = erl_scan:string("$", {1,1}, []),
+ test_string([34,65,200,34], [{string,{1,1},"AÈ"}]),
+ test_string("\\", [{'\\',{1,1}}]),
?line {'EXIT',_} =
(catch {foo, erl_scan:string('$\\a', {1,1})}), % type error
?line {'EXIT',_} =
@@ -304,7 +311,7 @@ errors() ->
integers() ->
[begin
I = list_to_integer(S),
- Ts = [{integer,1,I}],
+ Ts = [{integer,{1,1},I}],
?line test_string(S, Ts)
end || S <- [[N] || N <- lists:seq($0, $9)] ++ ["2323","000"] ],
ok.
@@ -313,14 +320,16 @@ base_integers() ->
[begin
B = list_to_integer(BS),
I = erlang:list_to_integer(S, B),
- Ts = [{integer,1,I}],
+ Ts = [{integer,{1,1},I}],
?line test_string(BS++"#"++S, Ts)
end || {BS,S} <- [{"2","11"}, {"5","23234"}, {"12","05a"},
{"16","abcdef"}, {"16","ABCDEF"}] ],
?line {error,{1,erl_scan,{base,1}},1} = erl_scan:string("1#000"),
+ {error,{{1,1},erl_scan,{base,1}},{1,2}} =
+ erl_scan:string("1#000", {1,1}, []),
- ?line test_string("12#bc", [{integer,1,11},{atom,1,c}]),
+ test_string("12#bc", [{integer,{1,1},11},{atom,{1,5},c}]),
[begin
Str = BS ++ "#" ++ S,
@@ -329,40 +338,53 @@ base_integers() ->
end || {BS,S} <- [{"3","3"},{"15","f"}, {"12","c"}] ],
?line {ok,[{integer,1,239},{'@',1}],1} = erl_scan:string("16#ef@"),
- ?line {ok,[{integer,1,14},{atom,1,g@}],1} = erl_scan:string("16#eg@"),
+ {ok,[{integer,{1,1},239},{'@',{1,6}}],{1,7}} =
+ erl_scan:string("16#ef@", {1,1}, []),
+ {ok,[{integer,{1,1},14},{atom,{1,5},g@}],{1,7}} =
+ erl_scan:string("16#eg@", {1,1}, []),
ok.
floats() ->
[begin
F = list_to_float(FS),
- Ts = [{float,1,F}],
+ Ts = [{float,{1,1},F}],
?line test_string(FS, Ts)
end || FS <- ["1.0","001.17","3.31200","1.0e0","1.0E17",
"34.21E-18", "17.0E+14"]],
- ?line test_string("1.e2", [{integer,1,1},{'.',1},{atom,1,e2}]),
+ test_string("1.e2", [{integer,{1,1},1},{'.',{1,2}},{atom,{1,3},e2}]),
?line {error,{1,erl_scan,{illegal,float}},1} =
erl_scan:string("1.0e400"),
+ {error,{{1,1},erl_scan,{illegal,float}},{1,8}} =
+ erl_scan:string("1.0e400", {1,1}, []),
[begin
- ?line {error,{1,erl_scan,{illegal,float}},1} = erl_scan:string(S)
+ {error,{1,erl_scan,{illegal,float}},1} = erl_scan:string(S),
+ {error,{{1,1},erl_scan,{illegal,float}},{1,_}} =
+ erl_scan:string(S, {1,1}, [])
end || S <- ["1.14Ea"]],
ok.
dots() ->
- Dot = [{".", {ok,[{dot,1}],1}},
- {". ", {ok,[{dot,1}],1}},
- {".\n", {ok,[{dot,1}],2}},
- {".%", {ok,[{dot,1}],1}},
- {".\210",{ok,[{dot,1}],1}},
- {".% öh",{ok,[{dot,1}],1}},
- {".%\n", {ok,[{dot,1}],2}},
- {".$", {error,{1,erl_scan,char},1}},
- {".$\\", {error,{1,erl_scan,char},1}},
- {".a", {ok,[{'.',1},{atom,1,a}],1}}
+ Dot = [{".", {ok,[{dot,1}],1}, {ok,[{dot,{1,1}}],{1,2}}},
+ {". ", {ok,[{dot,1}],1}, {ok,[{dot,{1,1}}],{1,3}}},
+ {".\n", {ok,[{dot,1}],2}, {ok,[{dot,{1,1}}],{2,1}}},
+ {".%", {ok,[{dot,1}],1}, {ok,[{dot,{1,1}}],{1,3}}},
+ {".\210",{ok,[{dot,1}],1}, {ok,[{dot,{1,1}}],{1,3}}},
+ {".% öh",{ok,[{dot,1}],1}, {ok,[{dot,{1,1}}],{1,6}}},
+ {".%\n", {ok,[{dot,1}],2}, {ok,[{dot,{1,1}}],{2,1}}},
+ {".$", {error,{1,erl_scan,char},1},
+ {error,{{1,2},erl_scan,char},{1,3}}},
+ {".$\\", {error,{1,erl_scan,char},1},
+ {error,{{1,2},erl_scan,char},{1,4}}},
+ {".a", {ok,[{'.',1},{atom,1,a}],1},
+ {ok,[{'.',{1,1}},{atom,{1,2},a}],{1,3}}}
],
- ?line [R = erl_scan:string(S) || {S, R} <- Dot],
+ [begin
+ R = erl_scan:string(S),
+ R2 = erl_scan:string(S, {1,1}, [])
+ end || {S, R, R2} <- Dot],
?line {ok,[{dot,_}=T1],{1,2}} = erl_scan:string(".", {1,1}, text),
?line [{column,1},{length,1},{line,1},{text,"."}] =
@@ -379,55 +401,55 @@ dots() ->
?line {error,{{1,2},erl_scan,char},{1,4}} =
erl_scan:string(".$\\", {1,1}),
- ?line test(". "),
- ?line test(". "),
- ?line test(".\n"),
- ?line test(".\n\n"),
- ?line test(".\n\r"),
- ?line test(".\n\n\n"),
- ?line test(".\210"),
- ?line test(".%\n"),
- ?line test(".a"),
-
- ?line test("%. \n. "),
+ test_string(". ", [{dot,{1,1}}]),
+ test_string(". ", [{dot,{1,1}}]),
+ test_string(".\n", [{dot,{1,1}}]),
+ test_string(".\n\n", [{dot,{1,1}}]),
+ test_string(".\n\r", [{dot,{1,1}}]),
+ test_string(".\n\n\n", [{dot,{1,1}}]),
+ test_string(".\210", [{dot,{1,1}}]),
+ test_string(".%\n", [{dot,{1,1}}]),
+ test_string(".a", [{'.',{1,1}},{atom,{1,2},a}]),
+
+ test_string("%. \n. ", [{dot,{2,1}}]),
?line {more,C} = erl_scan:tokens([], "%. ",{1,1}, return),
- ?line {done,{ok,[{comment,_,"%. "},
- {white_space,_,"\n"},
- {dot,_}],
- {2,3}}, ""} =
+ {done,{ok,[{comment,{1,1},"%. "},
+ {white_space,{1,4},"\n"},
+ {dot,{2,1}}],
+ {2,3}}, ""} =
erl_scan:tokens(C, "\n. ", {1,1}, return), % any loc, any options
?line [test_string(S, R) ||
- {S, R} <- [{".$\n", [{'.',1},{char,1,$\n}]},
- {"$\\\n", [{char,1,$\n}]},
- {"'\\\n'", [{atom,1,'\n'}]},
- {"$\n", [{char,1,$\n}]}] ],
+ {S, R} <- [{".$\n", [{'.',{1,1}},{char,{1,2},$\n}]},
+ {"$\\\n", [{char,{1,1},$\n}]},
+ {"'\\\n'", [{atom,{1,1},'\n'}]},
+ {"$\n", [{char,{1,1},$\n}]}] ],
ok.
chars() ->
[begin
L = lists:flatten(io_lib:format("$\\~.8b", [C])),
- Ts = [{char,1,C}],
+ Ts = [{char,{1,1},C}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255)],
%% Leading zeroes...
[begin
L = lists:flatten(io_lib:format("$\\~3.8.0b", [C])),
- Ts = [{char,1,C}],
+ Ts = [{char,{1,1},C}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255)],
%% $\^\n now increments the line...
[begin
L = "$\\^" ++ [C],
- Ts = [{char,1,C band 2#11111}],
+ Ts = [{char,{1,1},C band 2#11111}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255)],
[begin
L = "$\\" ++ [C],
- Ts = [{char,1,V}],
+ Ts = [{char,{1,1},V}],
?line test_string(L, Ts)
end || {C,V} <- [{$n,$\n}, {$r,$\r}, {$t,$\t}, {$v,$\v},
{$b,$\b}, {$f,$\f}, {$e,$\e}, {$s,$\s},
@@ -440,45 +462,45 @@ chars() ->
No = EC ++ Ds ++ X ++ New,
[begin
L = "$\\" ++ [C],
- Ts = [{char,1,C}],
+ Ts = [{char,{1,1},C}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255) -- No],
[begin
L = "'$\\" ++ [C] ++ "'",
- Ts = [{atom,1,list_to_atom("$"++[C])}],
+ Ts = [{atom,{1,1},list_to_atom("$"++[C])}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255) -- No],
- ?line test_string("\"\\013a\\\n\"", [{string,1,"\va\n"}]),
+ test_string("\"\\013a\\\n\"", [{string,{1,1},"\va\n"}]),
- ?line test_string("'\n'", [{atom,1,'\n'}]),
- ?line test_string("\"\n\a\"", [{string,1,"\na"}]),
+ test_string("'\n'", [{atom,{1,1},'\n'}]),
+ test_string("\"\n\a\"", [{string,{1,1},"\na"}]),
%% No escape
[begin
L = "$" ++ [C],
- Ts = [{char,1,C}],
+ Ts = [{char,{1,1},C}],
?line test_string(L, Ts)
end || C <- lists:seq(0, 255) -- (No ++ [$\\])],
- ?line test_string("$\n", [{char,1,$\n}]),
+ test_string("$\n", [{char,{1,1},$\n}]),
?line {error,{{1,1},erl_scan,char},{1,4}} =
erl_scan:string("$\\^",{1,1}),
- ?line test_string("$\\\n", [{char,1,$\n}]),
+ test_string("$\\\n", [{char,{1,1},$\n}]),
%% Robert's scanner returns line 1:
- ?line test_string("$\\\n", [{char,1,$\n}]),
- ?line test_string("$\n\n", [{char,1,$\n}]),
+ test_string("$\\\n", [{char,{1,1},$\n}]),
+ test_string("$\n\n", [{char,{1,1},$\n}]),
?line test("$\n\n"),
ok.
variables() ->
- ?line test_string(" \237_Aouåeiyäö", [{var,1,'_Aouåeiyäö'}]),
- ?line test_string("A_b_c@", [{var,1,'A_b_c@'}]),
- ?line test_string("V@2", [{var,1,'V@2'}]),
- ?line test_string("ABDÀ", [{var,1,'ABDÀ'}]),
- ?line test_string("Ärlig Östen", [{var,1,'Ärlig'},{var,1,'Östen'}]),
+ test_string(" \237_Aouåeiyäö", [{var,{1,7},'_Aouåeiyäö'}]),
+ test_string("A_b_c@", [{var,{1,1},'A_b_c@'}]),
+ test_string("V@2", [{var,{1,1},'V@2'}]),
+ test_string("ABDÀ", [{var,{1,1},'ABDÀ'}]),
+ test_string("Ärlig Östen", [{var,{1,1},'Ärlig'},{var,{1,7},'Östen'}]),
ok.
eof() ->
@@ -508,11 +530,25 @@ eof() ->
?line {done,{ok,[{atom,1,a}],1},eof} =
erl_scan:tokens(C5,eof,1),
+ %% With column.
+ {more, C6} = erl_scan:tokens([], "a", {1,1}),
+ %% An error before R13A.
+ %% {done,{error,{1,erl_scan,scan},1},eof} =
+ {done,{ok,[{atom,{1,1},a}],{1,2}},eof} =
+ erl_scan:tokens(C6,eof,1),
+
%% A dot followed by eof is special:
?line {more, C} = erl_scan:tokens([], "a.", 1),
?line {done,{ok,[{atom,1,a},{dot,1}],1},eof} = erl_scan:tokens(C,eof,1),
?line {ok,[{atom,1,foo},{dot,1}],1} = erl_scan:string("foo."),
+ %% With column.
+ {more, CCol} = erl_scan:tokens([], "a.", {1,1}),
+ {done,{ok,[{atom,{1,1},a},{dot,{1,2}}],{1,3}},eof} =
+ erl_scan:tokens(CCol,eof,1),
+ {ok,[{atom,{1,1},foo},{dot,{1,4}}],{1,5}} =
+ erl_scan:string("foo.", {1,1}, []),
+
ok.
illegal() ->
@@ -816,34 +852,34 @@ unicode() ->
erl_scan:string([1089]),
?line {error,{{1,1},erl_scan,{illegal,character}},{1,2}} =
erl_scan:string([1089], {1,1}),
- ?line {error,{1,erl_scan,{illegal,atom}},1} =
+ {error,{1,erl_scan,{illegal,atom}},1} =
erl_scan:string("'a"++[1089]++"b'", 1),
- ?line {error,{{1,1},erl_scan,{illegal,atom}},{1,6}} =
+ {error,{{1,1},erl_scan,{illegal,atom}},{1,6}} =
erl_scan:string("'a"++[1089]++"b'", {1,1}),
?line test("\"a"++[1089]++"b\""),
- ?line {ok,[{char,1,1}],1} =
+ {ok,[{char,1,1}],1} =
erl_scan:string([$$,$\\,$^,1089], 1),
- ?line {error,{1,erl_scan,Error},1} =
+ {error,{1,erl_scan,Error},1} =
erl_scan:string("\"qa\x{aaa}", 1),
- ?line "unterminated string starting with \"qa"++[2730]++"\"" =
+ "unterminated string starting with \"qa"++[2730]++"\"" =
erl_scan:format_error(Error),
?line {error,{{1,1},erl_scan,_},{1,11}} =
erl_scan:string("\"qa\\x{aaa}",{1,1}),
- ?line {error,{{1,1},erl_scan,{illegal,atom}},{1,12}} =
+ {error,{{1,1},erl_scan,{illegal,atom}},{1,12}} =
erl_scan:string("'qa\\x{aaa}'",{1,1}),
- ?line {ok,[{char,1,1089}],1} =
+ {ok,[{char,1,1089}],1} =
erl_scan:string([$$,1089], 1),
- ?line {ok,[{char,1,1089}],1} =
+ {ok,[{char,1,1089}],1} =
erl_scan:string([$$,$\\,1089], 1),
Qs = "$\\x{aaa}",
- ?line {ok,[{char,1,$\x{aaa}}],1} =
+ {ok,[{char,1,$\x{aaa}}],1} =
erl_scan:string(Qs, 1),
- ?line {ok,[Q2],{1,9}} =
+ {ok,[Q2],{1,9}} =
erl_scan:string("$\\x{aaa}", {1,1}, [text]),
- ?line [{category,char},{column,1},{length,8},
+ [{category,char},{column,1},{length,8},
{line,1},{symbol,16#aaa},{text,Qs}] =
erl_scan:token_info(Q2),
@@ -1164,7 +1200,13 @@ otp_11807(Config) when is_list(Config) ->
(catch erl_parse:abstract("string", [{encoding,bad}])),
ok.
-test_string(String, Expected) ->
+test_string(String, ExpectedWithCol) ->
+ {ok, ExpectedWithCol, _EndWithCol} = erl_scan:string(String, {1, 1}, []),
+ Expected = [ begin
+ {L,_C} = element(2, T),
+ setelement(2, T, L)
+ end
+ || T <- ExpectedWithCol ],
{ok, Expected, _End} = erl_scan:string(String),
test(String).