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Simplify Nexter interface

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This change allows a Nexter to be used in the same manner as a scanner
using a for graph.Next(it) {} construction.

It is important that graph.Next(it) and any associated it.Result() calls
operate on the same iterator.
This commit is contained in:
kortschak 2014-08-01 09:15:02 +09:30
parent f8e28e066e
commit b1a70d99aa
31 changed files with 168 additions and 233 deletions
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2
graph/iterator/all_iterator.go
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@ -87,7 +87,7 @@ func (it *Int64) DebugString(indent int) string {
// Next() on an Int64 all iterator is a simple incrementing counter.
// Return the next integer, and mark it as the result.
func (it *Int64) Next() (graph.Value, bool) {
func (it *Int64) Next() bool {
graph.NextLogIn(it)
if it.at == -1 {
return graph.NextLogOut(it, nil, false)