Remove overflow indentation

src/comment.rs

@@ -291,6 +291,10 @@ impl<T> Iterator for CharClasses<T> where T: Iterator, T::Item: RichChar {
                     '\n' => CharClassesStatus::Normal,
                     _ => CharClassesStatus::LineComment,
                 };
+                // let code_char_kind = match chr {
+                //     '\n' => CodeCharKind::Normal,
+                //     _ => CodeCharKind::Comment,
+                // };
                 return Some((CodeCharKind::Comment, item));
             }
         };
@@ -298,14 +302,14 @@ impl<T> Iterator for CharClasses<T> where T: Iterator, T::Item: RichChar {
     }
 }
 
-struct CommentCodeSlices<'a> {
+pub struct CommentCodeSlices<'a> {
     slice: &'a str,
     last_slice_type: CodeCharKind,
     last_slice_end: usize,
 }
 
 impl<'a> CommentCodeSlices<'a> {
-    fn new(slice: &'a str) -> CommentCodeSlices<'a> {
+    pub fn new(slice: &'a str) -> CommentCodeSlices<'a> {
         CommentCodeSlices {
             slice: slice,
             last_slice_type: CodeCharKind::Comment,
@@ -315,7 +319,7 @@ impl<'a> CommentCodeSlices<'a> {
 }
 
 impl<'a> Iterator for CommentCodeSlices<'a> {
-    type Item = (CodeCharKind, &'a str);
+    type Item = (CodeCharKind, usize, &'a str);
 
     fn next(&mut self) -> Option<Self::Item> {
         if self.last_slice_end == self.slice.len() {
@@ -341,11 +345,13 @@ impl<'a> Iterator for CommentCodeSlices<'a> {
             // This was the last subslice.
             self.last_slice_end = self.slice.len();
 
-            Some((kind, &self.slice[sub_slice_end..]))
+            Some((kind, sub_slice_end, &self.slice[sub_slice_end..]))
         } else {
-            let res = &self.slice[self.last_slice_end..sub_slice_end];
+            let res = (kind,
+                       self.last_slice_end,
+                       &self.slice[self.last_slice_end..sub_slice_end]);
             self.last_slice_end = sub_slice_end;
-            Some((kind, res))
+            Some(res)
         }
     }
 }
@@ -362,9 +368,10 @@ mod test {
 
         let mut iter = CommentCodeSlices::new(input);
 
-        assert_eq!((CodeCharKind::Normal, "code(); "), iter.next().unwrap());
-        assert_eq!((CodeCharKind::Comment, "/* test */"), iter.next().unwrap());
-        assert_eq!((CodeCharKind::Normal, " 1 + 1"), iter.next().unwrap());
+        assert_eq!((CodeCharKind::Normal, 0, "code(); "), iter.next().unwrap());
+        assert_eq!((CodeCharKind::Comment, 8, "/* test */"),
+                   iter.next().unwrap());
+        assert_eq!((CodeCharKind::Normal, 18, " 1 + 1"), iter.next().unwrap());
         assert_eq!(None, iter.next());
     }
 

src/expr.rs

@@ -423,7 +423,7 @@ impl Rewrite for ast::Block {
         }
 
         let mut visitor = FmtVisitor::from_codemap(context.codemap, context.config);
-        visitor.block_indent = context.block_indent + context.overflow_indent;
+        visitor.block_indent = context.block_indent;
 
         let prefix = match self.rules {
             ast::BlockCheckMode::UnsafeBlock(..) => {
@@ -751,7 +751,7 @@ fn rewrite_match(context: &RewriteContext,
     let mut result = format!("match {} {{", cond_str);
 
     let nested_context = context.nested_context();
-    let arm_indent = nested_context.block_indent + context.overflow_indent;
+    let arm_indent = nested_context.block_indent;
     let arm_indent_str = arm_indent.to_string(context.config);
 
     let open_brace_pos = span_after(mk_sp(cond.span.hi, arm_start_pos(&arms[0])),
@@ -795,7 +795,7 @@ fn rewrite_match(context: &RewriteContext,
                                                      &arm_indent_str));
     result.push_str(&comment);
     result.push('\n');
-    result.push_str(&(context.block_indent + context.overflow_indent).to_string(context.config));
+    result.push_str(&context.block_indent.to_string(context.config));
     result.push('}');
     Some(result)
 }
@@ -1537,9 +1537,8 @@ pub fn rewrite_assign_rhs<S: Into<String>>(context: &RewriteContext,
             // FIXME: we probably should related max_width to width instead of config.max_width
             // where is the 1 coming from anyway?
             let max_width = try_opt!(context.config.max_width.checked_sub(new_offset.width() + 1));
-            let rhs_indent = Indent::new(context.config.tab_spaces, 0);
-            let overflow_context = context.overflow_context(rhs_indent);
-            let rhs = ex.rewrite(&overflow_context, max_width, new_offset);
+            let inner_context = context.nested_context();
+            let rhs = ex.rewrite(&inner_context, max_width, new_offset);
 
             result.push_str(&&try_opt!(rhs));
         }

src/missed_spans.rs

@@ -11,7 +11,7 @@
 use visitor::FmtVisitor;
 
 use syntax::codemap::{self, BytePos, Span};
-use comment::{CharClasses, CodeCharKind};
+use comment::{CodeCharKind, CommentCodeSlices, rewrite_comment};
 
 impl<'a> FmtVisitor<'a> {
     // TODO these format_missing methods are ugly. Refactor and add unit tests

src/rewrite.rs

@@ -29,14 +29,8 @@ pub trait Rewrite {
 pub struct RewriteContext<'a> {
     pub codemap: &'a CodeMap,
     pub config: &'a Config,
-
     // Indentation due to nesting of blocks.
     pub block_indent: Indent,
-    // *Extra* indentation due to overflowing to the next line, e.g.,
-    // let foo =
-    //     bar();
-    // The extra 4 spaces when formatting `bar()` is overflow_indent.
-    pub overflow_indent: Indent,
 }
 
 impl<'a> RewriteContext<'a> {
@@ -45,16 +39,6 @@ impl<'a> RewriteContext<'a> {
             codemap: self.codemap,
             config: self.config,
             block_indent: self.block_indent.block_indent(self.config),
-            overflow_indent: self.overflow_indent,
-        }
-    }
-
-    pub fn overflow_context(&self, overflow: Indent) -> RewriteContext<'a> {
-        RewriteContext {
-            codemap: self.codemap,
-            config: self.config,
-            block_indent: self.block_indent,
-            overflow_indent: overflow,
         }
     }
 

src/visitor.rs

@@ -387,7 +387,6 @@ impl<'a> FmtVisitor<'a> {
             codemap: self.codemap,
             config: self.config,
             block_indent: self.block_indent,
-            overflow_indent: Indent::empty(),
         };
         // 1 = ";"
         match vp.rewrite(&context, self.config.max_width - offset.width() - 1, offset) {
@@ -419,7 +418,6 @@ impl<'a> FmtVisitor<'a> {
             codemap: self.codemap,
             config: self.config,
             block_indent: self.block_indent,
-            overflow_indent: Indent::empty(),
         }
     }
 }