Java Code Examples for org.ethereum.util.Value#length()

The following examples show how to use org.ethereum.util.Value#length() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TrieImpl.java    From ethereumj with MIT License 6 votes vote down vote up 
/****************************************
 * 			Private functions			*
 ****************************************/

private Object get(Object node, byte[] key) {

    // Return the node if key is empty (= found)
    if (key.length == 0 || isEmptyNode(node)) {
        return node;
    }

    Value currentNode = this.getNode(node);
    if (currentNode == null) return null;

    if (currentNode.length() == PAIR_SIZE) {
        // Decode the key
        byte[] k = unpackToNibbles(currentNode.get(0).asBytes());
        Object v = currentNode.get(1).asObj();

        if (key.length >= k.length && Arrays.equals(k, copyOfRange(key, 0, k.length))) {
            return this.get(v, copyOfRange(key, k.length, key.length));
        } else {
            return "";
        }
    } else {
        return this.get(currentNode.get(key[0]).asObj(), copyOfRange(key, 1, key.length));
    }
}
Example 2
Source File: TrieIterator.java    From ethereumj with MIT License 5 votes vote down vote up 
private void workNode(Value currentNode) {
	if (currentNode.length() == 2) {
		byte[] k = unpackToNibbles(currentNode.get(0).asBytes());

		if (currentNode.get(1).asString() == "") {
			this.workNode(currentNode.get(1));
		} else {
			if (k[k.length-1] == 16) {
				this.values.add(currentNode.get(1).asString());
			} else {
				this.shas.add(currentNode.get(1).asBytes());
				this.getNode(currentNode.get(1).asBytes());
			}
		}
	} else {
		for (int i = 0; i < currentNode.length(); i++) {
			if (i == 16 && currentNode.get(i).length() != 0) {
				this.values.add(currentNode.get(i).asString());
			} else {
				if (currentNode.get(i).asString() == "") {
					this.workNode(currentNode.get(i));
				} else {
					String val = currentNode.get(i).asString();
					if (val != "") {
						this.shas.add(currentNode.get(1).asBytes());
						this.getNode(val.getBytes());
					}
				}
			}
		}
	}
}
Example 3
Source File: TrieImpl.java    From ethereumj with MIT License 4 votes vote down vote up 
private boolean isEmptyNode(Object node) {
    Value n = new Value(node);
    return (node == null || (n.isString() && (n.asString() == "" || n.get(0).isNull())) || n.length() == 0);
}