80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package context
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import (
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"errors"
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)
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/* (1) Definitions
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---------------------------------------------------------*/
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/* (1) Default values */
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const DefaultMin = 0x00f0
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const DefaultMax = 0x0fff
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const DefaultThr = 0x000a
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/* (2) Struct attributes */
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type T struct {
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win float64 // 'timeid' window size
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min uint16 // minimum scha depth
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max uint16 // maximum scha depth
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thr uint16 // scha depth threshold
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}
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/* (3) Constructor
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*
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* @win<float64> Window size for 'timeid' package
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* @min<uint16> [OPT] Minimum scha depth
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* @thr<uint16> [OPT] scha depth threshold before renewal
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* @max<uint16> [OPT] Maximum scha depth
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*
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* @return outName<outType> outDesc
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*
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---------------------------------------------------------*/
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func Create(win float64, optional ...uint16) (*T, error) {
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var inst = new(T)
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/* (1) Window size error */
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if win < 0 {
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return nil, errors.New("Window size must be positive and is negative")
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}
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inst.win = win
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/* (2) Default values */
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inst.min = DefaultMin
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inst.thr = DefaultThr
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inst.max = DefaultMax
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/* (3) Optional 'min' */
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if len(optional) > 0 {
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if optional[0] < 0x0f {
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return nil, errors.New("Minimum depth must be greater than 0x0f (decimal 15) for consistency issues")
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}
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inst.min = optional[0]
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}
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/* (4) Optional 'thr' */
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if len(optional) > 1 {
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inst.thr = optional[1]
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}
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/* (5) Optional 'max' */
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if len(optional) > 2 {
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if optional[2] <= inst.min+inst.thr {
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return nil, errors.New("Minimum depth must be greater than 0x0f (decimal 15) for consistency issues")
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}
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inst.max = optional[2]
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}
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return inst, nil
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}
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/* (4) Getters */
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func (c T) Window() float64 { return c.win }
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func (c T) MinDepth() uint16 { return c.min }
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func (c T) MaxDepth() uint16 { return c.max }
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func (c T) DepthThreshold() uint16 { return c.thr }
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