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vhdl/Common/sim/ieee_proposed/modelsim/standard_textio_additions_c.vhdl
T
jens deb2fdbb90 - update fixed_pkg 
git-svn-id: http://moon:8086/svn/vhdl/trunk@1323 cc03376c-175c-47c8-b038-4cd826a8556b
2015-10-24 14:56:24 +00:00

479 lines
16 KiB
VHDL
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------------------------------------------------------------------------------
-- "standard_textio_additions" package contains the additions to the built in
-- "standard.textio" package.
-- This package should be compiled into "ieee_proposed" and used as follows:
-- use ieee_proposed.standard_textio_additions.all;
-- Last Modified: $Date: 2007/03/13 18:25:58 $
-- RCS ID: $Id: standard_textio_additions_c.vhdl,v 1.5 2007/03/13 18:25:58 l435385 Exp $
--
-- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
------------------------------------------------------------------------------
use std.textio.all;
package standard_textio_additions is
-- procedure DEALLOCATE (P : inout LINE);
procedure FLUSH (file F : TEXT);
function MINIMUM (L, R : SIDE) return SIDE;
function MAXIMUM (L, R : SIDE) return SIDE;
function TO_STRING (VALUE : SIDE) return STRING;
function JUSTIFY (VALUE : STRING; JUSTIFIED : SIDE := right; FIELD : WIDTH := 0) return STRING;
procedure SREAD (L : inout LINE; VALUE : out STRING; STRLEN : out NATURAL);
alias STRING_READ is SREAD [LINE, STRING, NATURAL];
alias BREAD is READ [LINE, BIT_VECTOR, BOOLEAN];
alias BREAD is READ [LINE, BIT_VECTOR];
alias BINARY_READ is READ [LINE, BIT_VECTOR, BOOLEAN];
alias BINARY_READ is READ [LINE, BIT_VECTOR];
procedure OREAD (L : inout LINE; VALUE : out BIT_VECTOR; GOOD : out BOOLEAN);
procedure OREAD (L : inout LINE; VALUE : out BIT_VECTOR);
alias OCTAL_READ is OREAD [LINE, BIT_VECTOR, BOOLEAN];
alias OCTAL_READ is OREAD [LINE, BIT_VECTOR];
procedure HREAD (L : inout LINE; VALUE : out BIT_VECTOR; GOOD : out BOOLEAN);
procedure HREAD (L : inout LINE; VALUE : out BIT_VECTOR);
alias HEX_READ is HREAD [LINE, BIT_VECTOR, BOOLEAN];
alias HEX_READ is HREAD [LINE, BIT_VECTOR];
procedure TEE (file F : TEXT; L : inout LINE);
procedure WRITE (L : inout LINE; VALUE : in REAL;
FORMAT : in STRING);
alias SWRITE is WRITE [LINE, STRING, SIDE, WIDTH];
alias STRING_WRITE is WRITE [LINE, STRING, SIDE, WIDTH];
alias BWRITE is WRITE [LINE, BIT_VECTOR, SIDE, WIDTH];
alias BINARY_WRITE is WRITE [LINE, BIT_VECTOR, SIDE, WIDTH];
procedure OWRITE (L : inout LINE; VALUE : in BIT_VECTOR;
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
alias OCTAL_WRITE is OWRITE [LINE, BIT_VECTOR, SIDE, WIDTH];
procedure HWRITE (L : inout LINE; VALUE : in BIT_VECTOR;
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
alias HEX_WRITE is HWRITE [LINE, BIT_VECTOR, SIDE, WIDTH];
end package standard_textio_additions;
library ieee_proposed;
use ieee_proposed.standard_additions.all;
package body standard_textio_additions is
-- pragma synthesis_off
constant NUS : STRING(2 to 1) := (others => ' '); -- NULL array
constant NBSP : CHARACTER := CHARACTER'val(160); -- space character
-- Writes L to a file without modifying the contents of the line
procedure TEE (file F : TEXT; L : inout LINE) is
begin
write (OUTPUT, L.all & LF);
writeline(F, L);
end procedure TEE;
procedure FLUSH (file F: TEXT) is -- Implicit
begin
file_close (F);
end procedure FLUSH;
-- Read and Write procedure for strings
procedure SREAD (L : inout LINE;
VALUE : out STRING;
STRLEN : out natural) is
variable ok : BOOLEAN;
variable c : CHARACTER;
-- Result is padded with space characters
variable result : STRING (1 to VALUE'length) := (others => ' ');
begin
VALUE := result;
loop -- skip white space
read(L, c, ok);
exit when (ok = false) or ((c /= ' ') and (c /= NBSP) and (c /= HT));
end loop;
-- Bail out if there was a bad read
if not ok then
STRLEN := 0;
return;
end if;
result (1) := c;
STRLEN := 1;
for i in 2 to VALUE'length loop
read(L, c, ok);
if (ok = false) or ((c = ' ') or (c = NBSP) or (c = HT)) then
exit;
else
result (i) := c;
end if;
STRLEN := i;
end loop;
VALUE := result;
end procedure SREAD;
-- Hex Read and Write procedures for bit_vector.
-- Procedure only visible internally.
procedure Char2QuadBits (C : CHARACTER;
RESULT : out BIT_VECTOR(3 downto 0);
GOOD : out BOOLEAN;
ISSUE_ERROR : in BOOLEAN) is
begin
case c is
when '0' => result := x"0"; good := true;
when '1' => result := x"1"; good := true;
when '2' => result := x"2"; good := true;
when '3' => result := x"3"; good := true;
when '4' => result := x"4"; good := true;
when '5' => result := x"5"; good := true;
when '6' => result := x"6"; good := true;
when '7' => result := x"7"; good := true;
when '8' => result := x"8"; good := true;
when '9' => result := x"9"; good := true;
when 'A' | 'a' => result := x"A"; good := true;
when 'B' | 'b' => result := x"B"; good := true;
when 'C' | 'c' => result := x"C"; good := true;
when 'D' | 'd' => result := x"D"; good := true;
when 'E' | 'e' => result := x"E"; good := true;
when 'F' | 'f' => result := x"F"; good := true;
when others =>
assert not ISSUE_ERROR report
"TEXTIO.HREAD Error: Read a '" & c &
"', expected a Hex character (0-F)." severity error;
GOOD := false;
end case;
end procedure Char2QuadBits;
procedure HREAD (L : inout LINE;
VALUE : out BIT_VECTOR;
GOOD : out BOOLEAN) is
variable ok : BOOLEAN;
variable c : CHARACTER;
constant ne : INTEGER := (VALUE'length+3)/4;
constant pad : INTEGER := ne*4 - VALUE'length;
variable sv : BIT_VECTOR (0 to ne*4 - 1) := (others => '0');
variable s : STRING(1 to ne-1);
begin
VALUE := (VALUE'range => '0');
loop -- skip white space
read(l, c, ok);
exit when (ok = false) or ((c /= ' ') and (c /= NBSP) and (c /= HT));
end loop;
-- Bail out if there was a bad read
if not ok then
GOOD := false;
return;
end if;
Char2QuadBits(c, sv(0 to 3), ok, false);
if not ok then
GOOD := false;
return;
end if;
read(L, s, ok);
if not ok then
GOOD := false;
return;
end if;
for i in 1 to ne-1 loop
Char2QuadBits(s(i), sv(4*i to 4*i+3), ok, false);
if not ok then
GOOD := false;
return;
end if;
end loop;
if or_reduce (sv (0 to pad-1)) = '1' then
GOOD := false; -- vector was truncated.
else
GOOD := true;
VALUE := sv (pad to sv'high);
end if;
end procedure HREAD;
procedure HREAD (L : inout LINE;
VALUE : out BIT_VECTOR) is
variable ok : BOOLEAN;
variable c : CHARACTER;
constant ne : INTEGER := (VALUE'length+3)/4;
constant pad : INTEGER := ne*4 - VALUE'length;
variable sv : BIT_VECTOR(0 to ne*4 - 1) := (others => '0');
variable s : STRING(1 to ne-1);
begin
VALUE := (VALUE'range => '0');
loop -- skip white space
read(l, c, ok);
exit when (ok = false) or ((c /= ' ') and (c /= NBSP) and (c /= HT));
end loop;
-- Bail out if there was a bad read
if not ok then
report "TEXTIO.HREAD Error: Failed skipping white space"
severity error;
return;
end if;
Char2QuadBits(c, sv(0 to 3), ok, true);
if not ok then
return;
end if;
read(L, s, ok);
if not ok then
report "TEXTIO.HREAD Error: Failed to read the STRING"
severity error;
return;
end if;
for i in 1 to ne-1 loop
Char2QuadBits(s(i), sv(4*i to 4*i+3), ok, true);
if not ok then
return;
end if;
end loop;
if or_reduce (sv (0 to pad-1)) = '1' then
report "TEXTIO.HREAD Error: Vector truncated"
severity error;
else
VALUE := sv (pad to sv'high);
end if;
end procedure HREAD;
procedure HWRITE (L : inout LINE;
VALUE : in BIT_VECTOR;
JUSTIFIED : in SIDE := right;
FIELD : in WIDTH := 0) is
begin
write (L => L,
VALUE => to_hstring(VALUE),
JUSTIFIED => JUSTIFIED,
FIELD => FIELD);
end procedure HWRITE;
-- Procedure only visible internally.
procedure Char2TriBits (C : CHARACTER;
RESULT : out BIT_VECTOR(2 downto 0);
GOOD : out BOOLEAN;
ISSUE_ERROR : in BOOLEAN) is
begin
case c is
when '0' => result := o"0"; good := true;
when '1' => result := o"1"; good := true;
when '2' => result := o"2"; good := true;
when '3' => result := o"3"; good := true;
when '4' => result := o"4"; good := true;
when '5' => result := o"5"; good := true;
when '6' => result := o"6"; good := true;
when '7' => result := o"7"; good := true;
when others =>
assert not ISSUE_ERROR
report
"TEXTIO.OREAD Error: Read a '" & c &
"', expected an Octal character (0-7)."
severity error;
GOOD := false;
end case;
end procedure Char2TriBits;
-- Read and Write procedures for Octal values
procedure OREAD (L : inout LINE;
VALUE : out BIT_VECTOR;
GOOD : out BOOLEAN) is
variable ok : BOOLEAN;
variable c : CHARACTER;
constant ne : INTEGER := (VALUE'length+2)/3;
constant pad : INTEGER := ne*3 - VALUE'length;
variable sv : BIT_VECTOR(0 to ne*3 - 1) := (others => '0');
variable s : STRING(1 to ne-1);
begin
VALUE := (VALUE'range => '0');
loop -- skip white space
read(l, c, ok);
exit when (ok = false) or ((c /= ' ') and (c /= NBSP) and (c /= HT));
end loop;
-- Bail out if there was a bad read
if not ok then
GOOD := false;
return;
end if;
Char2TriBits(c, sv(0 to 2), ok, false);
if not ok then
GOOD := false;
return;
end if;
read(L, s, ok);
if not ok then
GOOD := false;
return;
end if;
for i in 1 to ne-1 loop
Char2TriBits(s(i), sv(3*i to 3*i+2), ok, false);
if not ok then
GOOD := false;
return;
end if;
end loop;
if or_reduce (sv (0 to pad-1)) = '1' then
GOOD := false; -- vector was truncated.
else
GOOD := true;
VALUE := sv (pad to sv'high);
end if;
end procedure OREAD;
procedure OREAD (L : inout LINE;
VALUE : out BIT_VECTOR) is
variable c : CHARACTER;
variable ok : BOOLEAN;
constant ne : INTEGER := (VALUE'length+2)/3;
constant pad : INTEGER := ne*3 - VALUE'length;
variable sv : BIT_VECTOR(0 to ne*3 - 1) := (others => '0');
variable s : STRING(1 to ne-1);
begin
VALUE := (VALUE'range => '0');
loop -- skip white space
read(l, c, ok);
exit when (ok = false) or ((c /= ' ') and (c /= NBSP) and (c /= HT));
end loop;
-- Bail out if there was a bad read
if not ok then
report "TEXTIO.OREAD Error: Failed skipping white space"
severity error;
return;
end if;
Char2TriBits(c, sv(0 to 2), ok, true);
if not ok then
return;
end if;
read(L, s, ok);
if not ok then
report "TEXTIO.OREAD Error: Failed to read the STRING"
severity error;
return;
end if;
for i in 1 to ne-1 loop
Char2TriBits(s(i), sv(3*i to 3*i+2), ok, true);
if not ok then
return;
end if;
end loop;
if or_reduce (sv (0 to pad-1)) = '1' then
report "TEXTIO.OREAD Error: Vector truncated"
severity error;
else
VALUE := sv (pad to sv'high);
end if;
end procedure OREAD;
procedure OWRITE (L : inout LINE;
VALUE : in BIT_VECTOR;
JUSTIFIED : in SIDE := right;
FIELD : in WIDTH := 0) is
begin
write (L => L,
VALUE => to_ostring(VALUE),
JUSTIFIED => JUSTIFIED,
FIELD => FIELD);
end procedure OWRITE;
-- read and write for vector versions
-- These versions produce "value1, value2, value3 ...."
procedure read (L : inout LINE;
VALUE : out boolean_vector;
GOOD : out BOOLEAN) is
variable dummy : CHARACTER;
variable igood : BOOLEAN := true;
begin
for i in VALUE'range loop
read (L => L,
VALUE => VALUE(i),
GOOD => igood);
if (igood) and (i /= value'right) then
read (L => L,
VALUE => dummy, -- Toss the comma or seperator
good => igood);
end if;
if (not igood) then
good := false;
return;
end if;
end loop;
good := true;
end procedure read;
procedure read (L : inout LINE;
VALUE : out boolean_vector) is
variable dummy : CHARACTER;
variable igood : BOOLEAN;
begin
for i in VALUE'range loop
read (L => L,
VALUE => VALUE(i),
good => igood);
if (igood) and (i /= value'right) then
read (L => L,
VALUE => dummy, -- Toss the comma or seperator
good => igood);
end if;
if (not igood) then
report "STANDARD.STD_TEXTIO(BOOLEAN_VECTOR) "
& "Read error ecounted during vector read" severity error;
return;
end if;
end loop;
end procedure read;
procedure write (L : inout LINE;
VALUE : in boolean_vector;
JUSTIFIED : in SIDE := right;
FIELD : in WIDTH := 0) is
begin
for i in VALUE'range loop
write (L => L,
VALUE => VALUE(i),
JUSTIFIED => JUSTIFIED,
FIELD => FIELD);
if (i /= value'right) then
swrite (L, ", ");
end if;
end loop;
end procedure write;
procedure WRITE (L: inout LINE; VALUE: in REAL;
FORMAT: in STRING) is
begin
swrite ( L => L,
VALUE => to_string (VALUE, FORMAT));
end procedure WRITE;
function justify (
value : STRING;
justified : SIDE := right;
field : width := 0)
return STRING is
constant VAL_LEN : INTEGER := value'length;
variable result : STRING (1 to field) := (others => ' ');
begin -- function justify
-- return value if field is too small
if VAL_LEN >= field then
return value;
end if;
if justified = left then
result(1 to VAL_LEN) := value;
elsif justified = right then
result(field - VAL_LEN + 1 to field) := value;
end if;
return result;
end function justify;
function to_string (
VALUE : SIDE) return STRING is
begin
return SIDE'image(VALUE);
end function to_string;
-- pragma synthesis_on
-- Will be implicit
function minimum (L, R : SIDE) return SIDE is
begin
if L > R then return R;
else return L;
end if;
end function minimum;
function maximum (L, R : SIDE) return SIDE is
begin
if L > R then return L;
else return R;
end if;
end function maximum;
end package body standard_textio_additions;
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