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This commit is contained in:
ceriel
1990-09-25 17:40:47 +00:00
parent 87af8d0aa5
commit f656bdc676
17 changed files with 276 additions and 234 deletions
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113
util/grind/expr.h
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@@ -4,33 +4,92 @@
indices into arrays.
*/
#define E_NOT 1
#define E_DEREF 2
#define E_AND 3
#define E_OR 4
#define E_DIV 5 /* equal to truncated quotient */
#define E_MOD 6 /* x = (x E_DIV y) * y + x E_MOD y,
#define E_NOT 1
#define E_DEREF 2
#define E_AND 3
#define E_OR 4
#define E_DIV 5 /* equal to truncated quotient */
#define E_MOD 6 /* x = (x E_DIV y) * y + x E_MOD y,
0 <= (x E_MOD y) < y
*/
#define E_ZDIV 7 /* quotient rounded to 0 */
#define E_ZMOD 8 /* remainder of E_ZDIV */
#define E_IN 9 /* set membership */
#define E_ARRAY 10
#define E_PLUS 11
#define E_MIN 12
#define E_MUL 13
#define E_EQUAL 14
#define E_NOTEQUAL 15
#define E_LTEQUAL 16
#define E_GTEQUAL 17
#define E_LT 18
#define E_GT 19
#define E_SELECT 20
#define E_BAND 21 /* bitwise and */
#define E_BOR 22 /* bitwise or */
#define E_BXOR 23
#define E_BNOT 24
#define E_ZDIV 7 /* quotient rounded to 0 */
#define E_ZMOD 8 /* remainder of E_ZDIV */
#define E_IN 9 /* set membership */
#define E_ARRAY 10
#define E_PLUS 11
#define E_MIN 12
#define E_MUL 13
#define E_EQUAL 14
#define E_NOTEQUAL 15
#define E_LTEQUAL 16
#define E_GTEQUAL 17
#define E_LT 18
#define E_GT 19
#define E_SELECT 20
#define E_BAND 21 /* bitwise and */
#define E_BOR 22 /* bitwise or */
#define E_BXOR 23
#define E_BNOT 24
#define E_DERSELECT 25 /* -> in C */
#define E_LSFT 26
#define E_RSFT 27
#define E_ADDR 28
#define E_LSFT 26
#define E_RSFT 27
#define E_ADDR 28
/* long get_int(char *buf, long size, int class)
Returns the value of size 'size', residing in 'buf', of 'class'
T_INTEGER, T_UNSIGNED, or T_ENUM.
*/
extern long get_int();
/* int put_int(char *buf, long size, long value)
Stores the value 'value' of size 'size' in 'buf'.
*/
extern int put_int();
/* double get_real(char *buf, long size)
Returns the real value of size 'size', residing in 'buf'.
T_INTEGER, T_UNSIGNED, or T_ENUM.
*/
extern double get_real();
/* int put_real(char *buf, long size, double value)
Stores the value 'value' of size 'size' in 'buf'.
*/
extern int put_real();
/* int eval_cond(p_tree p)
This routine evaluates the conditional expression indicated by p
and returns 1 if it evaluates to TRUE, or 0 if it could not be
evaluated for some reason or if it evalutes to FALSE.
If the expression cannot be evaluated, an error message is given.
*/
extern int eval_cond();
/* int eval_desig(p_tree p, t_addr *pbuf, long **psize, p_type *ptp)
This routine evaluates the expression indicated by p, which should
result in a designator. The result of the expression is an address
which is to be found in *pbuf. *psize will contain the size of the
designated object, and *ptp its type.
If the expression cannot be evaluated or does not result in a
designator, 0 is returned and an error message is given.
Otherwise, 1 is returned.
*/
extern int eval_desig();
/* int eval_expr(p_tree p, char **pbuf, long **psize, p_type *ptp)
This routine evaluates the expression indicated by p.
The result of the expression is left in *pbuf.
*psize will contain the size of the value, and *ptp its type.
If the expression cannot be evaluated, 0 is returned and an error
message is given. Otherwise, 1 is returned.
*/
extern int eval_expr();
/* int convert(char **pbuf, long *psize, p_type *ptp, p_type tp, long size)
This routine tries to convert the value in pbuf of size psize
and type ptp to type tp with size size. It returns 0 if this fails,
while producing an error message. Otherwise, it returns 1 and
the resulting value, type and size are left in pbuf, ptp, and
psize, respectively.
*/
extern int convert();