Fix warnings

saphyr/.gitignore

@@ -1,2 +1,3 @@
 target
 Cargo.lock
+*.swp

saphyr/src/parser.rs

@@ -85,7 +85,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
 
     fn skip(&mut self) {
         self.token = None;
-        self.peek();
+        //self.peek();
     }
     fn pop_state(&mut self) {
         self.state = self.states.pop().unwrap()
@@ -117,7 +117,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
         if ev == Event::StreamEnd {
             return Ok(());
         }
-        self.load_document(&ev);
+        try!(self.load_document(&ev));
         Ok(())
     }
 
@@ -125,7 +125,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
         assert_eq!(first_ev, &Event::DocumentStart);
 
         let ev = try!(self.parse());
-        let ev = try!(self.load_node(&ev));
+        try!(self.load_node(&ev));
 
         Ok(())
     }
@@ -251,7 +251,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
     }
 
     fn _explict_document_start(&mut self) -> ParseResult {
-        let mut tok = try!(self.peek());
+        let tok = try!(self.peek());
         if tok.1 != TokenType::DocumentStartToken {
             return Err(ScanError::new(tok.0, "did not find expected <document start>"));
         }
@@ -280,7 +280,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
     }
 
     fn parse_node(&mut self, block: bool, indentless_sequence: bool) -> ParseResult {
-        let mut tok = try!(self.peek());
+        let tok = try!(self.peek());
         match tok.1 {
             TokenType::AliasToken => unimplemented!(),
             TokenType::AnchorToken => unimplemented!(),
@@ -316,7 +316,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
     fn block_mapping_key(&mut self, first: bool) -> ParseResult {
         // skip BlockMappingStartToken
         if first {
-            let tok = try!(self.peek());
+            let _ = try!(self.peek());
             //self.marks.push(tok.0);
             self.skip();
         }
@@ -379,7 +379,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
     fn flow_sequence_entry(&mut self, first: bool) -> ParseResult {
         // skip FlowMappingStartToken
         if first {
-            let tok = try!(self.peek());
+            let _ = try!(self.peek());
             //self.marks.push(tok.0);
             self.skip();
         }
@@ -421,7 +421,7 @@ impl<T: Iterator<Item=char>> Parser<T> {
     fn block_sequence_entry(&mut self, first: bool) -> ParseResult {
         // BLOCK-SEQUENCE-START
         if first {
-            let tok = try!(self.peek());
+            let _ = try!(self.peek());
             //self.marks.push(tok.0);
             self.skip();
         }

saphyr/src/scanner.rs

@@ -1,5 +1,4 @@
 use std::collections::VecDeque;
-use yaml::*;
 
 #[derive(Clone, Copy, PartialEq, Debug, Eq)]
 pub enum TEncoding {
@@ -149,7 +148,7 @@ pub type ScanResult = Result<(), ScanError>;
 impl<T: Iterator<Item=char>> Scanner<T> {
     /// Creates the YAML tokenizer.
     pub fn new(rdr: T) -> Scanner<T> {
-        let mut p = Scanner {
+        Scanner {
             rdr: rdr,
             buffer: VecDeque::new(),
             mark: Marker::new(0, 1, 0),
@@ -164,15 +163,14 @@ impl<T: Iterator<Item=char>> Scanner<T> {
             flow_level: 0,
             tokens_parsed: 0,
             token_available: false,
-        };
+        }
-        return p;
     }
 
     fn lookhead(&mut self, count: usize) {
         if self.buffer.len() >= count {
             return;
         }
-        for i in 0..(count - self.buffer.len()) {
+        for _ in 0..(count - self.buffer.len()) {
             self.buffer.push_back(self.rdr.next().unwrap_or('\0'));
         }
     }
@@ -193,6 +191,7 @@ impl<T: Iterator<Item=char>> Scanner<T> {
     fn ch_is(&self, c: char) -> bool {
         self.buffer[0] == c
     }
+    #[allow(dead_code)]
     fn eof(&self) -> bool {
         self.ch_is('\0')
     }
@@ -250,7 +249,7 @@ impl<T: Iterator<Item=char>> Scanner<T> {
         self.lookhead(4);
 
         if is_z(self.ch()) {
-            self.fetch_stream_end();
+            try!(self.fetch_stream_end());
             return Ok(());
         }
 
@@ -325,7 +324,7 @@ impl<T: Iterator<Item=char>> Scanner<T> {
     }
 
     pub fn fetch_more_tokens(&mut self) -> ScanResult {
-        let mut need_more = false;
+        let mut need_more;
         loop {
             need_more = false;
             if self.tokens.is_empty() {
@@ -469,7 +468,7 @@ impl<T: Iterator<Item=char>> Scanner<T> {
             // - * only allowed in block
             unreachable!();
         }
-        self.remove_simple_key();
+        try!(self.remove_simple_key());
         self.allow_simple_key();
 
         let start_mark = self.mark;
@@ -719,7 +718,7 @@ a4:
 ".to_string();
         let p = Scanner::new(s.chars());
         for t in p {
-            //println!("{:?}", t);
+            // println!("{:?}", t);
         }
     }
 }