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authorFelix Lange <fjl@twurst.com>2017-04-13 20:41:24 +0800
committerFelix Lange <fjl@twurst.com>2017-04-25 08:14:31 +0800
commit4047ccad2fb73fd2cfd69bf5b8cbfa788871ce0f (patch)
tree702ff4ccb7e70b4f9a063df145a13d2d54ad1292 /trie/secure_trie.go
parenta13e920af01692cb07a520cda688f1cc5b5469dd (diff)
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trie: add start key to NodeIterator constructors
The 'step' method is split into two parts, 'peek' and 'push'. peek returns the next state but doesn't make it current. The end of iteration was previously tracked by setting 'trie' to nil. End of iteration is now tracked using the 'iteratorEnd' error, which is slightly cleaner and requires less code.
Diffstat (limited to 'trie/secure_trie.go')
-rw-r--r--trie/secure_trie.go6
1 files changed, 4 insertions, 2 deletions
diff --git a/trie/secure_trie.go b/trie/secure_trie.go
index 201716d18..37d1d4b09 100644
--- a/trie/secure_trie.go
+++ b/trie/secure_trie.go
@@ -156,8 +156,10 @@ func (t *SecureTrie) Root() []byte {
return t.trie.Root()
}
-func (t *SecureTrie) NodeIterator() NodeIterator {
- return t.trie.NodeIterator()
+// NodeIterator returns an iterator that returns nodes of the underlying trie. Iteration
+// starts at the key after the given start key.
+func (t *SecureTrie) NodeIterator(start []byte) NodeIterator {
+ return t.trie.NodeIterator(start)
}
// CommitTo writes all nodes and the secure hash pre-images to the given database.