---

yaml
---
r: 142517
b: refs/heads/try2
c: 149c976
h: refs/heads/master
i:
  142515: 018ef18
v: v3

Author: glinscott

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: 52949fbf1876ecd03303006c534a74c5e29bc90d
+refs/heads/try2: 149c976aa0b6441b93f2e2140e10e0424d39ea17
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/libextra/json.rs

@@ -481,22 +481,30 @@ pub fn to_pretty_str(json: &Json) -> ~str {
     io::with_str_writer(|wr| to_pretty_writer(wr, json))
 }
 
+static BUF_SIZE : uint = 64000;
+
 #[allow(missing_doc)]
 pub struct Parser {
     priv rdr: @io::Reader,
+    priv buf: ~[char],
+    priv buf_idx: uint,
     priv ch: char,
     priv line: uint,
     priv col: uint,
 }
 
 /// Decode a json value from an io::reader
 pub fn Parser(rdr: @io::Reader) -> Parser {
-    Parser {
+    let mut p = Parser {
         rdr: rdr,
-        ch: rdr.read_char(),
+        buf: rdr.read_chars(BUF_SIZE),
+        buf_idx: 0,
+        ch: 0 as char,
         line: 1,
-        col: 1,
-    }
+        col: 0,
+    };
+    p.bump();
+    p
 }
 
 impl Parser {
@@ -521,13 +529,26 @@ impl Parser {
     fn eof(&self) -> bool { self.ch == -1 as char }
 
     fn bump(&mut self) {
-        self.ch = self.rdr.read_char();
+        if self.eof() {
+            return;
+        }
+
+        self.col += 1u;
+
+        if self.buf_idx >= self.buf.len() {
+            self.buf = self.rdr.read_chars(BUF_SIZE);
+            if self.buf.len() == 0 {
+                self.ch = -1 as char;
+                return;
+            }
+            self.buf_idx = 0;
+        }
+        self.ch = self.buf[self.buf_idx];
+        self.buf_idx += 1;
 
         if self.ch == '\n' {
             self.line += 1u;
             self.col = 1u;
-        } else {
-            self.col += 1u;
         }
     }