15. Package TEXTIO
PACKAGE
TEXTIO
IS
-- type definitions for text I/O :
TYPE
line
IS ACCESS
string;
TYPE
text
IS FILE OF
string;
TYPE
side
IS
( right, left );
SUBTYPE
width
IS
natural;
-- standard text files :
-- old VHDL'87 standard
--
FILE
input : text
IS IN
"std_input";
--
FILE
output : text
IS OUT
"std_output";
-- new VHDL'93 standard
FILE
input : text
OPEN READ_MODE IS
"std_input";
FILE
output : text
OPEN WRITE_MODE IS
"std_output";
-- input routines for standard types :
PROCEDURE
readline ( f :
IN
text; l :
OUT
line );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
bit; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
bit );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
bit_vector; good :
OUT
boolean);
PROCEDURE
read ( l :
INOUT
line; value :
OUT
bit_vector );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
boolean; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
character; good :
OUT
boolean);
PROCEDURE
read ( l :
INOUT
line; value :
OUT
character );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
integer; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
integer );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
real; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
real );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
string; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
string );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
time; good :
OUT
boolean );
PROCEDURE
read ( l :
INOUT
line; value :
OUT
time );
-- output routines for standard types :
PROCEDURE
writeline ( f :
OUT
text; l :
IN
line );
PROCEDURE
write ( l :
INOUT
line; value :
IN
bit;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
bit_vector;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
boolean;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
character;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
integer;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
real;
justified :
IN
side := right; field :
IN
width := 0;
digits :
IN
natural := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
string;
justified :
IN
side := right; field :
IN
width := 0 );
PROCEDURE
write ( l :
INOUT
line; value :
IN
time;
justified :
IN
side := right; field :
IN
width := 0;
unit :
IN
time := ns );
-- file position predicates :
--
FUNCTION
endline ( l :
IN
line )
RETURN
boolean; -- only VHDL'87
FUNCTION
endfile ( f :
IN
text )
RETURN
boolean;
END
TEXTIO;