93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/* $Header$ */
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/* D E C L A R A T I O N S P E C I F I E R C H E C K I N G */
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#include "Lpars.h"
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#include "decspecs.h"
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#include "arith.h"
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#include "type.h"
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#include "level.h"
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#include "def.h"
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extern char options[];
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extern int level;
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extern char *symbol2str();
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struct decspecs null_decspecs;
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do_decspecs(ds)
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struct decspecs *ds;
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{
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/* The provisional decspecs ds as obtained from the program
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is turned into a legal consistent decspecs.
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*/
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struct type *tp = ds->ds_type;
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if (level == L_FORMAL1)
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crash("do_decspecs");
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if ( level == L_GLOBAL &&
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(ds->ds_sc == AUTO || ds->ds_sc == REGISTER)
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) {
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warning("no global %s variable allowed",
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symbol2str(ds->ds_sc));
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ds->ds_sc = GLOBAL;
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}
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if (level == L_FORMAL2) {
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if (ds->ds_sc_given && ds->ds_sc != AUTO &&
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ds->ds_sc != REGISTER){
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extern char *symbol2str();
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error("%s formal illegal", symbol2str(ds->ds_sc));
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}
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ds->ds_sc = FORMAL;
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}
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/* The tests concerning types require a full knowledge of the
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type and will have to be postponed to declare_idf.
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*/
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/* some adjustments as described in RM 8.2 */
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if (tp == 0)
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tp = int_type;
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switch (ds->ds_size) {
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case SHORT:
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if (tp == int_type)
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tp = short_type;
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else error("short with illegal type");
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break;
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case LONG:
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if (tp == int_type)
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tp = long_type;
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else
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if (tp == float_type)
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tp = double_type;
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else error("long with illegal type");
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break;
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}
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if (ds->ds_unsigned) {
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switch (tp->tp_fund) {
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case CHAR:
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if (options['R'])
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warning("unsigned char not allowed");
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tp = uchar_type;
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break;
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case SHORT:
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if (options['R'])
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warning("unsigned short not allowed");
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tp = ushort_type;
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break;
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case INT:
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tp = uint_type;
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break;
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case LONG:
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if (options['R'])
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warning("unsigned long not allowed");
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tp = ulong_type;
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break;
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default:
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error("unsigned with illegal type");
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break;
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}
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}
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ds->ds_type = tp;
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}
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