printing trie
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4f5399c558
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53
src/trie.rs
53
src/trie.rs
@ -146,22 +146,8 @@ pub struct TrieDB {
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impl fmt::Debug for TrieDB {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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try!(writeln!(f, "["));
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{
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let print_indent = | fo: &mut fmt::Formatter, times | { for i in 0..times { write!(fo, " "); }};
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let root_rlp = self.db.lookup(&self.root).expect("Trie root not found!");
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self.apply_to_all(root_rlp, &mut | node, deepness, index | {
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print_indent(f, deepness);
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match *node {
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Node::Leaf(ref slice, ref value) => { writeln!(f, "{:x}: Leaf {:?}, {:?}", index, slice, value); },
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Node::ExtensionRaw(ref slice, ref item) => { write!(f, "Extension (raw): "); }
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Node::ExtensionSha3(ref slice, ref sha3) => { write!(f, "Extension (sha3): "); }
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Node::Branch(Some(ref nodes), ref value) => { writeln!(f, "{:x} Branch: ", index); }
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_ => { writeln!(f, "node"); }
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}
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}, 0, 0);
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}
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let root_rlp = self.db.lookup(&self.root).expect("Trie root not found!");
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self.fmt_all(root_rlp, f, 0);
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writeln!(f, "]")
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}
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}
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@ -197,30 +183,47 @@ impl TrieDB {
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}
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}
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fn apply_to_all<F>(&self, node: &[u8], f: &mut F, deepness: usize, index: usize) where F: FnMut(&Node, usize, usize) -> () {
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fn fmt_indent(&self, f: &mut fmt::Formatter, size: usize) -> fmt::Result {
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for i in 0..size {
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try!(write!(f, " "));
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}
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Ok(())
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}
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fn fmt_all(&self, node: &[u8], f: &mut fmt::Formatter, deepness: usize) -> fmt::Result {
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let node = Node::decoded(node);
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match node {
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Node::Leaf(_, _) => f(&node, deepness, index),
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Node::Leaf(slice, value) => try!(writeln!(f, "Leaf {:?}, {:?}", slice, value.pretty())),
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Node::ExtensionRaw(_, ref item) => {
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f(&node, deepness, index);
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self.apply_to_all(item, f, deepness + 1, 0);
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self.fmt_indent(f, deepness);
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try!(write!(f, "Extension (raw): "));
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self.fmt_all(item, f, deepness + 1);
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},
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Node::ExtensionSha3(_, sha3) => {
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f(&node, deepness, index);
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self.fmt_indent(f, deepness);
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try!(write!(f, "Extension (sha3): "));
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let rlp = self.db.lookup(&H256::from_slice(sha3)).expect("sha3 not found!");
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self.apply_to_all(rlp, f, deepness + 1, 0);
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self.fmt_all(rlp, f, deepness + 1);
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},
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Node::Branch(Some(ref nodes), ref value) => {
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f(&node, deepness, index);
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try!(writeln!(f, "Branch: "));
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for i in 0..16 {
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self.apply_to_all(nodes[i], f, deepness + 1, i);
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match Node::decoded(nodes[i]) {
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Node::Branch(None, _) => (),
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_ => {
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self.fmt_indent(f, deepness + 1);
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try!(write!(f, "{:x}: ", i));
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self.fmt_all(nodes[i], f, deepness + 1);
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}
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}
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}
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},
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// empty
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n @ Node::Branch(_, _) => {
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// do nothing
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}
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}
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};
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Ok(())
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}
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fn get<'a>(&'a self, key: &NibbleSlice<'a>) -> Option<&'a [u8]> {
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