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/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
#include "config.h"
#include <limits.h>
#include "system.h"
#include "c_types.h"
#include "hashid_ops.h"
#include "error.h"
#include "catalog.h"
#include "option.h"
#include "char.h"
#include "file.h"
#include "inttype.h"
#include "lex.h"
#include "literal.h"
#include "macro.h"
#include "preproc.h"
#include "syntax.h"
#include "table.h"
#include "ustring.h"
/*
PORTABILITY TABLE ENTRIES
This table describes the portability table entries. The entries need
to be keep in one-to-one correspondence with the PORT_* macros defined
in table.h.
*/
PORT_ENTRY port_entry [] = {
{ "char_bits", 0, 0, btype_none }, /* 0 */
{ "short_bits", 0, 0, btype_none }, /* 1 */
{ "int_bits", 0, 0, btype_none }, /* 2 */
{ "long_bits", 0, 0, btype_none }, /* 3 */
{ "longlong_bits", 1, 0, btype_none }, /* 4 */
{ "max_bits", 1, UINT_MAX, btype_none }, /* 5 */
{ "signed_range", 0, 0, btype_none }, /* 6 */
{ "char_type", 0, 0, btype_none }, /* 7 */
{ "exact_range", 1, 0, btype_none }, /* 8 */
{ "ptr_int", 1, 0, btype_none }, /* 9 */
{ "ptr_fn", 1, 0, btype_none }, /* 10 */
{ "non_prototype_checks", 1, 0, btype_none }, /* 11 */
{ "multibyte", 1, 0, btype_none } /* 12 */
} ;
/*
PARSE A PORTABILITY TABLE
This routine parses and processes the portability table. It returns
the last token read.
*/
static int parse_table
PROTO_Z ()
{
int t ;
PORT_ENTRY *p = port_entry ;
while ( t = read_token (), t == lex_identifier ) {
int i ;
unsigned n = 0 ;
HASHID nm = token_hashid ;
BASE_TYPE bt = btype_none ;
string us = DEREF_string ( hashid_name_etc_text ( nm ) ) ;
update_column () ;
/* Check through table entries */
for ( i = 0 ; i < PORT_size ; i++ ) {
string ut = ustrlit ( p [i].name ) ;
if ( ustreq ( us, ut ) ) {
/* Entry found */
if ( p [i].set == 2 ) {
report ( crt_loc, ERR_port_entry_redef ( ut ) ) ;
}
p [i].set = 2 ;
break ;
}
}
/* Perform appropriate action */
switch ( i ) {
case PORT_char_bits :
case PORT_short_bits :
case PORT_int_bits :
case PORT_long_bits :
case PORT_llong_bits :
case PORT_max_bits :
case PORT_multibyte : {
/* Deal with integral values */
unsigned err = 0 ;
t = read_token () ;
update_column () ;
if ( t != lex_integer_Hlit ) return ( t ) ;
us = token_buff.start ;
n = ( unsigned ) eval_line_digits ( us, &err ) ;
if ( err ) report ( crt_loc, ERR_lex_literal_bad ( us ) ) ;
break ;
}
case PORT_signed_range : {
/* Deal with range values */
t = read_token () ;
update_column () ;
if ( t != lex_identifier ) return ( t ) ;
nm = token_hashid ;
us = DEREF_string ( hashid_name_etc_text ( nm ) ) ;
if ( ustrseq ( us, "maximum" ) ) {
bt = ( btype_signed | btype_long ) ;
} else if ( ustrseq ( us, "symmetric" ) ) {
bt = btype_signed ;
} else {
return ( t ) ;
}
break ;
}
case PORT_char_type : {
/* Deal with sign values */
t = read_token () ;
update_column () ;
if ( t != lex_identifier ) return ( t ) ;
nm = token_hashid ;
us = DEREF_string ( hashid_name_etc_text ( nm ) ) ;
if ( ustrseq ( us, "signed" ) ) {
bt = btype_signed ;
} else if ( ustrseq ( us, "unsigned" ) ) {
bt = btype_unsigned ;
} else if ( ustrseq ( us, "either" ) ) {
bt = btype_none ;
} else {
return ( t ) ;
}
break ;
}
case PORT_ptr_int : {
/* Deal with type values */
t = read_token () ;
update_column () ;
if ( t != lex_identifier ) return ( t ) ;
nm = token_hashid ;
us = DEREF_string ( hashid_name_etc_text ( nm ) ) ;
if ( ustrseq ( us, "char" ) ) {
bt = btype_char ;
} else if ( ustrseq ( us, "short" ) ) {
bt = btype_short ;
} else if ( ustrseq ( us, "int" ) ) {
bt = btype_int ;
} else if ( ustrseq ( us, "long" ) ) {
bt = btype_long ;
} else if ( ustrseq ( us, "none" ) ) {
bt = btype_none ;
} else {
return ( t ) ;
}
break ;
}
case PORT_exact_range :
case PORT_ptr_fn :
case PORT_non_proto : {
/* Deal with boolean values */
t = read_token () ;
update_column () ;
if ( t != lex_identifier ) return ( t ) ;
nm = token_hashid ;
us = DEREF_string ( hashid_name_etc_text ( nm ) ) ;
if ( ustrseq ( us, "no" ) ) {
n = 0 ;
} else if ( ustrseq ( us, "yes" ) ) {
n = 1 ;
} else {
return ( t ) ;
}
break ;
}
default : {
/* Unknown entry identifier */
return ( t ) ;
}
}
p [i].value = n ;
p [i].type = bt ;
}
return ( t ) ;
}
/*
READ THE PORTABILITY TABLE
This routine reads and processes the portability table given by nm.
*/
void read_table
PROTO_N ( ( nm ) )
PROTO_T ( string nm )
{
int set = 0 ;
PORT_ENTRY *p = port_entry ;
/* Read table */
if ( nm ) {
int i, t ;
input_name = nm ;
if ( !open_input ( text_mode ) ) {
/* Can't open portability table */
fail ( ERR_fail_port ( nm ) ) ;
} else {
/* Read portability table */
set = 1 ;
pragma_number = 1 ;
no_preproc_dir = 1 ;
crt_buff_no = 0 ;
IGNORE init_buffer ( crt_buff_no ) ;
unread_char ( char_newline ) ;
crt_loc.line-- ;
t = parse_table () ;
update_column () ;
if ( t != lex_eof ) {
/* Parse error in portability table */
PPTOKEN *r = new_pptok () ;
r->tok = t ;
token_parts ( t, r ) ;
report ( crt_loc, ERR_lex_parse ( r ) ) ;
set = 0 ;
} else {
/* Check for undefined values */
for ( i = 0 ; i < PORT_size ; i++ ) {
if ( p [i].set == 0 ) {
string nt = ustrlit ( p [i].name ) ;
report ( crt_loc, ERR_port_entry_undef ( nt ) ) ;
set = 0 ;
}
}
}
no_preproc_dir = 0 ;
pragma_number = 0 ;
close_input () ;
}
}
/* Set values from table */
if ( set ) {
unsigned m ;
unsigned long n ;
BASE_INFO *q = basetype_info ;
set_char_sign ( p [ PORT_char_type ].type ) ;
if ( p [ PORT_llong_bits ].set == 2 ) {
/* 'long long' types are allowed */
set_option ( OPT_longlong, ( unsigned ) OPTION_ALLOW ) ;
m = p [ PORT_llong_bits ].value ;
} else {
/* 'long long' types are not allowed */
m = p [ PORT_long_bits ].value ;
p [ PORT_llong_bits ].value = m ;
}
if ( p [ PORT_exact_range ].value == 0 ) {
/* Find maximum number of bits in an integer */
m = p [ PORT_max_bits ].value ;
}
for ( n = 0 ; n < ORDER_ntype ; n++ ) {
unsigned exact = p [ PORT_exact_range ].value ;
switch ( n ) {
case ntype_char :
case ntype_schar :
case ntype_uchar : {
q [n].min_bits = p [ PORT_char_bits ].value ;
q [n].max_bits = m ;
break ;
}
case ntype_sshort :
case ntype_ushort : {
q [n].min_bits = p [ PORT_short_bits ].value ;
q [n].max_bits = m ;
break ;
}
case ntype_sint :
case ntype_uint :
case ntype_none : {
q [n].min_bits = p [ PORT_int_bits ].value ;
q [n].max_bits = m ;
break ;
}
case ntype_slong :
case ntype_ulong : {
q [n].min_bits = p [ PORT_long_bits ].value ;
q [n].max_bits = m ;
break ;
}
case ntype_sllong :
case ntype_ullong : {
q [n].min_bits = p [ PORT_llong_bits ].value ;
q [n].max_bits = m ;
break ;
}
case ntype_ptrdiff_t :
case ntype_size_t : {
q [n].min_bits = p [ PORT_int_bits ].value ;
q [n].max_bits = m ;
exact = 0 ;
break ;
}
case ntype_wchar_t :
case ntype_ellipsis : {
q [n].min_bits = p [ PORT_char_bits ].value ;
q [n].max_bits = m ;
exact = 0 ;
break ;
}
}
if ( exact ) {
/* Exact integer range known */
q [n].max_bits = q [n].min_bits ;
}
if ( q [n].sign & btype_signed ) {
/* Set signed type range */
q [n].sign = p [ PORT_signed_range ].type ;
}
}
if ( p [ PORT_exact_range ].value ) {
/* Set exact type ranges */
set_exact_types () ;
}
}
return ;
}