gistfile1.txt

   Compiling fastgraph v0.0.1 (file:///Users/jw/fun/rust/fastgraph)
/Users/jw/fun/rust/fastgraph/src/lib.rs:18:4: 24:5 error: match arms have incompatible types: expected `()`, found `core::option::Option<<generic #127>>` (expected (), found enum core::option::Option)
/Users/jw/fun/rust/fastgraph/src/lib.rs:18 			match re.find(line) {
/Users/jw/fun/rust/fastgraph/src/lib.rs:19 				Some((from,end)) => {
/Users/jw/fun/rust/fastgraph/src/lib.rs:20 					let i: int = from_str(line.slice(from,end)).unwrap();
/Users/jw/fun/rust/fastgraph/src/lib.rs:21 					Some(i);
/Users/jw/fun/rust/fastgraph/src/lib.rs:22 				},
/Users/jw/fun/rust/fastgraph/src/lib.rs:23 				_ => None
                                           ...
/Users/jw/fun/rust/fastgraph/src/lib.rs:23:10: 23:14 note: match arm with an incompatible type
/Users/jw/fun/rust/fastgraph/src/lib.rs:23 				_ => None
                                           				     ^~~~
/Users/jw/fun/rust/fastgraph/src/lib.rs:36:2: 46:3 error: match arms have incompatible types: expected `()`, found `core::option::Option<<generic #16>>` (expected (), found enum core::option::Option)
/Users/jw/fun/rust/fastgraph/src/lib.rs:36 	match (from,to,weight) {
/Users/jw/fun/rust/fastgraph/src/lib.rs:37 		(Some(f), Some(t), Some(w)) => {
/Users/jw/fun/rust/fastgraph/src/lib.rs:38 			let v: Vertice = Vertice { 
/Users/jw/fun/rust/fastgraph/src/lib.rs:39 				source: f, 
/Users/jw/fun/rust/fastgraph/src/lib.rs:40 				target: t, 
/Users/jw/fun/rust/fastgraph/src/lib.rs:41 				weight: w 
                                           ...
/Users/jw/fun/rust/fastgraph/src/lib.rs:45:8: 45:12 note: match arm with an incompatible type
/Users/jw/fun/rust/fastgraph/src/lib.rs:45 		_ => None
                                           		     ^~~~

lib.rs

extern crate regex;
use regex::Regex;

struct Vertice {
	source: int,
	target: int,
	weight: int,
}

struct Node {
	id: int,
	vertices: Vec<Vertice>,
}

fn regexp_int(line: &str, re: &str) -> Option<int> {
	match Regex::new(re) {
		Ok(re) => {
			match re.find(line) {
				Some((from,end)) => {
					let i: int = from_str(line.slice(from,end)).unwrap();
					Some(i);
				},
				_ => None
			}
		},
		Err(_) => None
	}
}


pub fn parse_node(line: &str) -> Option<Vertice> {
	let from 	= regexp_int(line, "\"from\": (\\d+)");
	let to 		= regexp_int(line, "\"to\": (\\d+)");
	let weight 	= regexp_int(line, "\"weight\": (\\d+)");

	match (from,to,weight) {
		(Some(f), Some(t), Some(w)) => {
			let v: Vertice = Vertice { 
				source: f, 
				target: t, 
				weight: w 
			};
			Some(v);
		},
		_ => None
	}
}