From aefce10b8f05dc52017beb1d422ce7b2b97bd6a5 Mon Sep 17 00:00:00 2001
From: bnewbold <bnewbold@robocracy.org>
Date: Mon, 19 Dec 2016 00:46:53 -0800
Subject: parser: make strip comments a function

---
 modelica-parser-lalrpop/examples/parse_file.rs |  9 +--------
 modelica-parser-lalrpop/src/lib.rs             | 10 ++++++++++
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/modelica-parser-lalrpop/examples/parse_file.rs b/modelica-parser-lalrpop/examples/parse_file.rs
index 53da285..fe87ef0 100644
--- a/modelica-parser-lalrpop/examples/parse_file.rs
+++ b/modelica-parser-lalrpop/examples/parse_file.rs
@@ -1,20 +1,15 @@
 
 extern crate modelica_parser;
-extern crate regex;
 
 use std::env;
 use std::io::Read;
 use std::fs::File;
 use std::process::exit;
-use regex::Regex;
 
 
 fn main() {
 
     let args: Vec<String> = env::args().collect();
-    // Match on comments:
-    //      (?m) sets multi-line mode
-    let comment_re = Regex::new(r"(?m)(//.*)$").unwrap();
 
     if args.len() <= 1 {
         println!("I'm a modelica parser! Pass me one or more files to parse...");
@@ -29,9 +24,7 @@ fn main() {
             continue;
         }
 
-        // Strip comments manually
-        let striped = comment_re.replace_all(&raw, "");
-
+        let striped = modelica_parser::strip_comments(&raw);
         let result = modelica_parser::parser::parse_file(&striped);
 
         match result {
diff --git a/modelica-parser-lalrpop/src/lib.rs b/modelica-parser-lalrpop/src/lib.rs
index a109607..0b94c35 100644
--- a/modelica-parser-lalrpop/src/lib.rs
+++ b/modelica-parser-lalrpop/src/lib.rs
@@ -1,13 +1,23 @@
 
 extern crate lalrpop_util;
 extern crate colored;
+extern crate regex;
 
 pub mod parser;
 pub mod ast;
 
 use colored::*;
 use lalrpop_util::ParseError;
+use regex::Regex;
 
+pub fn strip_comments(raw: &str) -> String {
+    // TODO: shouldn't recompile regex on every function call
+
+    // Match on comments:
+    //      (?m) sets multi-line mode
+    let comment_re = Regex::new(r"(?m)(//.*)$").unwrap();
+    comment_re.replace_all(&raw, "")
+}
 
 fn pp_segment(raw: &str, start: usize, end: usize) -> String {
     let mut line_start = 0;
-- 
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