melrōse musical expression player

package op import ( "fmt" "github.com/emicklei/melrose/core" ) type Trim struct { Start core.HasValue End core.HasValue Target core.Sequenceable } func (t Trim) S() core.Sequence { start, ok := t.Start.Value().(int) if !ok || start < 0 { start = 0 } end, ok := t.End.Value().(int) if !ok || end < 0 { end = 0 } notes := t.Target.S().Notes if end >= len(notes) { return core.EmptySequence } return core.Sequence{ Notes: notes[start : len(notes)-end], } } func (t Trim) Storex() string { if s, ok := t.Target.(core.Storable); ok { return fmt.Sprintf("trim(%s,%s,%s)", core.Storex(t.Start), core.Storex(t.End), s.Storex()) } return "" } // Replaced is part of Replaceable func (t Trim) Replaced(from, to core.Sequenceable) core.Sequenceable { if core.IsIdenticalTo(t, from) { return to } if core.IsIdenticalTo(t.Target, from) { return Trim{Start: t.Start, End: t.End, Target: to} } if rep, ok := t.Target.(core.Replaceable); ok { return Trim{Start: t.Start, End: t.End, Target: rep.Replaced(from, to)} } return t }