Extracted args

Cargo.lock

@@ -1,17 +1,239 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
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 [[package]]
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 [[package]]
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 [[package]]
 name = "wallet"
 version = "0.1.0"
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
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Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 
 members = [
+    "currency",
     "farm",
     "node",
     "plot",

currency/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "currency"
+version = "0.1.0"
+authors = ["Jake Hillion <jake@hillion.co.uk>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

currency/src/lib.rs

@@ -0,0 +1,42 @@
+use std::collections::HashMap;
+
+type Hash = [u8; 64];
+type Signature = [u8; 64];
+type Address = [u8; 32];
+
+type ChainHeight = u64;
+type ChainSize = u64;
+type Cost = u128;
+type ChainIndex = u64;
+
+pub enum ValidationError {}
+
+pub struct BeaconEntry {
+    pub prev: Hash,
+    pub height: ChainHeight,
+}
+
+pub struct ShardEntry {
+    pub prev: Hash,
+    pub height: ChainHeight,
+
+    pub transactions: Vec<Transaction>,
+}
+
+pub struct Transaction {
+    pub address: Address,
+    pub signature: Signature,
+}
+
+impl Transaction {
+    fn get_cost(transaction: &Transaction, sizes: HashMap<ChainIndex, ChainSize>) -> Cost {
+        todo!()
+    }
+}
+
+pub fn validate_chain<T>(
+    top: Hash,
+    getter: HashMap<ChainIndex, &dyn Fn(Hash) -> Result<ShardEntry, T>>,
+) -> Result<Result<(), ValidationError>, T> {
+    Ok(Ok(()))
+}

node/Cargo.toml

@@ -7,3 +7,4 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+structopt = "0.3"

node/src/args.rs

@@ -0,0 +1,52 @@
+use std::net::SocketAddr;
+use std::net::ToSocketAddrs;
+use std::path::PathBuf;
+
+use std::io;
+
+use structopt::StructOpt;
+
+pub const DEFAULT_PORT: u16 = 8443;
+const DEFAULT_PORT_STR: &str = "8443";
+
+#[derive(Debug, StructOpt)]
+pub enum Args {
+    /// Run the node
+    Run(Run),
+}
+
+impl Args {
+    pub fn from_args() -> Self {
+        StructOpt::from_args()
+    }
+}
+
+#[derive(Debug, StructOpt)]
+pub struct Run {
+    /// Exit once the node has caught up
+    #[structopt(short = "s", long = "short")]
+    short: bool,
+
+    /// Fork and run as a daemon
+    #[structopt(short = "d", long = "daemon")]
+    daemon: bool,
+
+    /// Port on which to run the node
+    #[structopt(short = "p", long = "port", default_value = DEFAULT_PORT_STR)]
+    port: u16,
+
+    /// Path in which to store node content
+    #[structopt(long = "path", default_value = ".unnamed/node")]
+    path: PathBuf,
+
+    /// Nodes to initially connect to
+    #[structopt(long = "initial_nodes", parse(try_from_str = parse_connection_address))]
+    initial_nodes: Vec<SocketAddr>,
+}
+
+fn parse_connection_address(arg: &str) -> io::Result<SocketAddr> {
+    let mut addrs = arg
+        .to_socket_addrs()
+        .or_else(|_| (arg, DEFAULT_PORT).to_socket_addrs())?;
+    Ok(addrs.next().expect("no socket addr"))
+}

node/src/main.rs

@@ -1,3 +1,16 @@
-fn main() {
-    println!("Hello, world!");
+mod args;
+
+#[derive(Debug)]
+enum Error {}
+
+fn main() -> Result<(), Error> {
+    let node = args::Args::from_args();
+
+    match node {
+        args::Args::Run(args) => run(&args),
+    }
+}
+
+fn run(args: &args::Run) -> Result<(), Error> {
+    Ok(())
 }