59 lines
810 B
C
59 lines
810 B
C
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Header$ */
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/* OPERATOR HANDLING */
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#include "Lpars.h"
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int
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rank_of(oper)
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int oper;
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{
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/* The rank of the operator oper is returned.
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*/
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switch (oper) {
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default:
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return 0;
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case '(':
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return 1;
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case '!':
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return 2;
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case '*':
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case '/':
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case '%':
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return 3;
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case '+':
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case '-':
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return 4;
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case LEFT:
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case RIGHT:
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return 5;
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case '<':
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case '>':
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case LESSEQ:
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case GREATEREQ:
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return 6;
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case EQUAL:
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case NOTEQUAL:
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return 7;
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case '&':
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return 8;
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case '^':
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return 9;
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case '|':
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return 10;
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case AND:
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return 11;
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case OR:
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return 12;
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case '?':
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case ':':
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return 13;
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case ',':
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return 15;
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}
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/*NOTREACHED*/
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}
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