method

hash

v1_8_7_330 - Show latest stable - 0 notes - Class: Regexp

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1_8_7_330 (0)
1_9_1_378 (-26)
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2_2_9 (38)
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hash() public

Produce a hash based on the text and options of this regular expression.

/*
 * call-seq:
 *   rxp.hash   => fixnum
 *
 * Produce a hash based on the text and options of this regular expression.
 */

static VALUE
rb_reg_hash(re)
    VALUE re;
{
    int hashval, len;
    char *p;

    rb_reg_check(re);
    hashval = RREGEXP(re)->ptr->options;
    len = RREGEXP(re)->len;
    p  = RREGEXP(re)->str;
    while (len--) {
        hashval = hashval * 33 + *p++;
    }
    hashval = hashval + (hashval>>5);
    
    return INT2FIX(hashval);
}

hash

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