Merge pull request #106 from lqd/cleanups

Reduce initial compile time

Cargo.toml

@@ -12,16 +12,14 @@ edition = "2018"
 [dev-dependencies]
 assert_cli = "0.6"
 diff = "0.1.0"
+polonius-parser = {version = "0.2.0", path = "polonius-parser" }
 
 [dependencies]
-log = "0.4"
 env_logger = "0.5"
-datafrog = "2.0.0"
 failure = "0.1.1"
 rustc-hash = "1.0.0"
 structopt = "0.2.8"
 clap = "2.31.2"
 polonius-engine = {version = "0.7.0", path = "polonius-engine" }
-polonius-parser = {version = "0.2.0", path = "polonius-parser" }
 
 [workspace]

src/dump.rs

@@ -501,11 +501,6 @@ fn maybe_render_point(
                      &output_tuples));
 }
 
-fn write_string(f: &mut File, s: &str) -> io::Result<()> {
-    f.write_all(&s.bytes().collect::<Vec<_>>())?;
-    Ok(())
-}
-
 fn escape_for_graphviz(s: &str) -> String {
     s.replace(r"\", r"\\")
         .replace("\"", "\\\"")

src/lib.rs

@@ -1,10 +1,6 @@
-#![allow(dead_code)]
-
 extern crate clap;
-extern crate datafrog;
 extern crate failure;
 extern crate polonius_engine;
-extern crate polonius_parser;
 extern crate rustc_hash;
 extern crate structopt;
 

src/program.rs

@@ -1,3 +1,5 @@
+#![cfg(test)]
+
 use std::collections::BTreeSet;
 
 use polonius_parser::{