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//go:generate stringer -type=Op -trimprefix=OP_ -linecomment
package rrdformat
import (
"fmt"
"strings"
"git.lukeshu.com/go/librrd/rrdformat/rrdbinary"
)
type Op uint8
const (
// rrdtool 1.1.x 2001-03-10
OP_NUMBER Op = iota
OP_VARIABLE
OP_INF
OP_PREV
OP_NEGINF
OP_UNKN
OP_NOW
OP_TIME
OP_ADD // +
OP_MOD // %
OP_SUB // -
OP_MUL // *
OP_DIV // /
OP_SIN
OP_DUP
OP_EXC
OP_POP
OP_COS
OP_LOG
OP_EXP
OP_LT
OP_LE
OP_GT
OP_GE
OP_EQ
OP_IF
OP_MIN
OP_MAX
OP_LIMIT
OP_FLOOR
OP_CEIL
OP_UN
OP_END
OP_LTIME
// rrdtool 1.1.x 2002-03-10
OP_NE
OP_ISINF
// rrdtool 1.1.x 2002-07-06
OP_PREV_OTHER
// rrdtool 1.1.x 2003-07-14
OP_COUNT
// rrdtool 1.1.x 2004-05-04
OP_ATAN
// rrdtool 1.1.x 2004-08-24
OP_SQRT
OP_SORT
OP_REV
// rrdtool 1.1.x 2004-09-24
OP_TREND
// rrdtool 1.3.0 -- Problematic: Wasn't inserted at end
OP_TRENDNAN
// rrdtool 1.2.10 -- Problematic: Definition in [1.2.10,1.3.0) differs from current
OP_ATAN2
OP_RAD2DEG
OP_DEG2RAD
// rrdtool 1.4.0 -- Problematic: Wasn't inserted at end
OP_PREDICT
OP_PREDICTSIGMA
// rrdtool 1.2.14 -- Problematic: Definition in [1.2.14,1.4.0) differs from current
OP_AVG
OP_ABS
// rrdtool 1.3.0 -- Problematic: Definition in [1.3.0,1.4.0) differs from current
OP_ADDNAN
// rrdtool 1.5.0 -- Problematic: Wasn't inserted at end
OP_MINNAN
OP_MAXNAN
// rrdtool 1.5.0 -- Problematic: Definition in [1.5.0-pre.2012.06.01,1.5.0-pre.2014.02.07) differs from current
OP_MEDIAN
// rrdtool 1.5.0
OP_PREDICTPERC
OP_DEPTH
OP_COPY
OP_ROLL
OP_INDEX
// rrdtool 1.5.4
OP_STEPWIDTH
OP_NEWDAY
OP_NEWWEEK
OP_NEWMONTH
OP_NEWYEAR
// rrdtool 1.6.0
OP_SMIN
OP_SMAX
OP_STDEV
OP_PERCENT
OP_POW
)
func (rrd RRD) RPNCompactToString(rpnps []rrdbinary.RPNToken) (string, error) {
strs := make([]string, len(rpnps))
for _, rpnp := range rpnps {
switch Op(rpnp.Op) {
case OP_NUMBER:
strs = append(strs, fmt.Sprintf("%d", rpnp.Val))
case OP_VARIABLE:
if rpnp.Val < 0 || int(rpnp.Val) >= len(rrd.DSDefs) {
return "", fmt.Errorf("out-of-bounds %s %d", Op(rpnp.Op), rpnp.Val)
}
strs = append(strs, string(rrd.DSDefs[int(rpnp.Val)].DSName))
case OP_PREV_OTHER:
if rpnp.Val < 0 || int(rpnp.Val) >= len(rrd.DSDefs) {
return "", fmt.Errorf("out-of-bounds %s %d", Op(rpnp.Op), rpnp.Val)
}
strs = append(strs, fmt.Sprintf("PREV(%s)", rrd.DSDefs[int(rpnp.Val)].DSName))
case OP_END:
break
default:
strs = append(strs, Op(rpnp.Op).String())
}
}
return strings.Join(strs, ","), nil
}
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