54 lines
631 B
C
54 lines
631 B
C
/* OPERATOR HANDLING */
|
|
|
|
#include "Lpars.h"
|
|
|
|
int
|
|
rank_of(oper)
|
|
int oper;
|
|
{
|
|
/* The rank of the operator oper is returned.
|
|
*/
|
|
switch (oper) {
|
|
default:
|
|
return 0;
|
|
case '(':
|
|
return 1;
|
|
case '!':
|
|
return 2;
|
|
case '*':
|
|
case '/':
|
|
case '%':
|
|
return 3;
|
|
case '+':
|
|
case '-':
|
|
return 4;
|
|
case LEFT:
|
|
case RIGHT:
|
|
return 5;
|
|
case '<':
|
|
case '>':
|
|
case LESSEQ:
|
|
case GREATEREQ:
|
|
return 6;
|
|
case EQUAL:
|
|
case NOTEQUAL:
|
|
return 7;
|
|
case '&':
|
|
return 8;
|
|
case '^':
|
|
return 9;
|
|
case '|':
|
|
return 10;
|
|
case AND:
|
|
return 11;
|
|
case OR:
|
|
return 12;
|
|
case '?':
|
|
case ':':
|
|
return 13;
|
|
case ',':
|
|
return 15;
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|