From d410dfa668b2540e7a312d8422c8aab4b61a094e Mon Sep 17 00:00:00 2001
From: Siim Kallas <siimkallas@gmail.com>
Date: Mon, 7 Jul 2014 18:50:28 +0300
Subject: [PATCH] Build fix for latest Rust

---
 src/codegen/branchify.rs | 69 ++++++++++++++++++++--------------------
 1 file changed, 35 insertions(+), 34 deletions(-)

diff --git a/src/codegen/branchify.rs b/src/codegen/branchify.rs
index 0c9df2c0..1ac9e960 100644
--- a/src/codegen/branchify.rs
+++ b/src/codegen/branchify.rs
@@ -93,9 +93,8 @@ pub fn generate_branchified_method(
         unknown: &str) {
 
     // Write Formatted
-    macro_rules! wf(($($x:tt)*) => ({
+    let mut wf = |s: String| {
         let indentstr = " ".repeat(indent * 4);
-        let s = format!($($x)*);
         let result = writer.write(indentstr.as_bytes())
         .and(writer.write(s.as_bytes()))
         .and(writer.write(b"\n"));
@@ -104,47 +103,49 @@ pub fn generate_branchified_method(
             Ok(_)  => {},
             Err(e) => fail!("write error: {:s}", e.desc),
         }
-    }))
+    };
+
+    fn r(branch: &ParseBranch, prefix: &str, read_call: &str,
+         valid: &str, unknown: &str, write_fmt: &mut |String|) {
 
-    fn r(writer: &mut BufferedWriter<File>, branch: &ParseBranch, prefix: &str, indent: uint, read_call: &str,
-            end: &str, max_len: &str, valid: &str, unknown: &str) {
         for &c in branch.matches.iter() {
             let next_prefix = format!("{}{}", prefix, c as char);
-            wf!("Some(b) if b == '{}' as u8 => match {} {{", c as char, read_call);
+            (*write_fmt)(format!("Some(b) if b == '{}' as u8 => match {} {{", c as char, read_call));
             for b in branch.children.iter() {
-                r(writer, b, next_prefix.as_slice(), indent + 1, read_call, end, max_len, valid, unknown);
+                r(b, next_prefix.as_slice(), read_call, valid, unknown, write_fmt);
             }
             match branch.result {
-                Some(ref result) => wf!("    Some(b) if b == SP => return Some({}),", *result),
-                None => wf!("    Some(b) if b == SP => return Some({}),",
-                                unknown.replace("{}", format!("~\"{}\"", next_prefix.as_slice()).as_slice())),
+                Some(ref result) => (*write_fmt)(format!("    Some(b) if b == SP => return Some({}),", *result)),
+                None => (*write_fmt)(format!("    Some(b) if b == SP => return Some({}),",
+                                unknown.replace("{}", format!("~\"{}\"", next_prefix.as_slice()).as_slice()))),
             }
-            wf!("    Some(b) if {} => (\"{}\", b),", valid, next_prefix.as_slice());
-            wf!("    _ => return None,");
-            wf!("}},");
+            (*write_fmt)(format!("    Some(b) if {} => (\"{}\", b),", valid, next_prefix.as_slice()));
+            (*write_fmt)(format!("    _ => return None,"));
+            (*write_fmt)(format!("}},"));
         }
     }
-    wf!("let (s, next_byte) = match {} {{", read_call);
+
+    wf(format!("let (s, next_byte) = match {} {{", read_call));
     for b in branches.iter() {
-        r(writer, b, "", indent + 1, read_call, end, max_len, valid, unknown);
+        r(b, "", read_call, valid, unknown, &mut wf);
     }
-    wf!("    Some(b) if {} => (\"\", b),", valid);
-    wf!("    _ => return None,");
-    wf!("}};");
-    wf!("// OK, that didn't pan out. Let's read the rest and see what we get.");
-    wf!("let mut s = s.to_string();");
-    wf!("s.push_char(next_byte as char);");
-    wf!("loop {{");
-    wf!("    match {} {{", read_call);
-    wf!("        Some(b) if b == {} => return Some({}),", end, unknown.replace("{}", "s"));
-    wf!("        Some(b) if {} => {{", valid);
-    wf!("            if s.len() == {} {{", max_len);
-    wf!("                // Too long; bad request");
-    wf!("                return None;");
-    wf!("            }}");
-    wf!("            s.push_char(b as char);");
-    wf!("        }},");
-    wf!("        _ => return None,");
-    wf!("    }}");
-    wf!("}}");
+    wf(format!("    Some(b) if {} => (\"\", b),", valid));
+    wf(format!("    _ => return None,"));
+    wf(format!("}};"));
+    wf(format!("// OK, that didn't pan out. Let's read the rest and see what we get."));
+    wf(format!("let mut s = s.to_string();"));
+    wf(format!("s.push_char(next_byte as char);"));
+    wf(format!("loop {{"));
+    wf(format!("    match {} {{", read_call));
+    wf(format!("        Some(b) if b == {} => return Some({}),", end, unknown.replace("{}", "s")));
+    wf(format!("        Some(b) if {} => {{", valid));
+    wf(format!("            if s.len() == {} {{", max_len));
+    wf(format!("                // Too long; bad request"));
+    wf(format!("                return None;"));
+    wf(format!("            }}"));
+    wf(format!("            s.push_char(b as char);"));
+    wf(format!("        }},"));
+    wf(format!("        _ => return None,"));
+    wf(format!("    }}"));
+    wf(format!("}}"));
 }