Add default implementation for StringBuffer

2 files changed, 10 insertions, 1 deletions

diff --git a/svgbob/Cargo.toml b/svgbob/Cargo.toml
index 694a99d..7b1c0fa 100644
--- a/svgbob/Cargo.toml
+++ b/svgbob/Cargo.toml
@@ -13,7 +13,7 @@ license = "Apache-2.0"
 nalgebra = "0.18.0"
 ncollide2d = "0.19.1"
 lazy_static = "1.3.0"
-sauron = { version = "0.33" }
+sauron = { version = "0.34" }
 unicode-width = "0.1.5"
 itertools = "0.8.0"
 pom = { version = "3.1.0" }
diff --git a/svgbob/src/buffer/string_buffer.rs b/svgbob/src/buffer/string_buffer.rs
index 159e683..9350a90 100644
--- a/svgbob/src/buffer/string_buffer.rs
+++ b/svgbob/src/buffer/string_buffer.rs
@@ -22,6 +22,12 @@ impl DerefMut for StringBuffer {
     }
 }
 
+impl Default for StringBuffer {
+    fn default() -> Self {
+        Self(vec![])
+    }
+}
+
 impl StringBuffer {
     pub fn new() -> Self {
         StringBuffer(vec![])
@@ -41,6 +47,8 @@ impl StringBuffer {
         }
     }
 
+    /// put a character in this x and y location, replacing the old character
+    /// if there is already
     /// x and y can also be negative
     pub fn add_char(&mut self, x: i32, y: i32, ch: char) {
         if x >= 0 && y >= 0 {
@@ -63,6 +71,7 @@ impl StringBuffer {
         }
     }
 
+    /// replace insert a string on this location
     pub fn add_str(&mut self, x: i32, y: i32, s: &str) {
         for (i, ch) in s.chars().enumerate() {
             self.add_char(x + i as i32, y, ch);