feat: debug for arrayview (moonbitlang#660)

yj-qin · Jul 9, 2024 · b2c713e · b2c713e
1 parent 2ea4919
commit b2c713e
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diff --git a/builtin/builtin.mbti b/builtin/builtin.mbti
@@ -100,6 +100,7 @@ impl Array {
 
 type ArrayView
 impl ArrayView {
+  debug_write[X : Debug](Self[X], Buffer) -> Unit
   length[T](Self[T]) -> Int
   op_as_view[T](Self[T], ~start : Int, ~end : Int) -> Self[T]
   op_get[T](Self[T], Int) -> T

diff --git a/builtin/debug.mbt b/builtin/debug.mbt
@@ -106,6 +106,17 @@ pub fn debug_write[X : Debug](self : Array[X], buf : Buffer) -> Unit {
   buf.write_char(']')
 }
 
+pub fn debug_write[X : Debug](self : ArrayView[X], buf : Buffer) -> Unit {
+  buf.write_char('[')
+  for i = 0; i < self.length(); i = i + 1 {
+    if i > 0 {
+      buf.write_string(", ")
+    }
+    self[i].debug_write(buf)
+  }
+  buf.write_char(']')
+}
+
 pub fn debug_write(self : String, buf : Buffer) -> Unit {
   buf.write_char('"')
   let mut segment_start = 0