From d8e2ece2246c579ccffe4abe946fc39603caeb80 Mon Sep 17 00:00:00 2001
From: Shunsuke Shibayama <sbym1346@gmail.com>
Date: Thu, 17 Nov 2022 20:48:42 +0900
Subject: [PATCH] impl Display for ComileErrors

---
 compiler/erg_common/error.rs   | 7 -------
 compiler/erg_compiler/error.rs | 7 +++++++
 compiler/erg_parser/error.rs   | 8 ++++++++
 3 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/compiler/erg_common/error.rs b/compiler/erg_common/error.rs
index cc1e8670..fab1d2d5 100644
--- a/compiler/erg_common/error.rs
+++ b/compiler/erg_common/error.rs
@@ -810,11 +810,4 @@ pub trait MultiErrorDisplay<Item: ErrorDisplay>: Stream<Item> {
         }
         write!(f, "")
     }
-
-    fn write_all<W: std::io::Write>(&self, w: &mut W) {
-        let mut writer = BufWriter::new(w);
-        for err in self.iter() {
-            err.write_to(&mut writer);
-        }
-    }
 }
diff --git a/compiler/erg_compiler/error.rs b/compiler/erg_compiler/error.rs
index 179966bb..64f568c1 100644
--- a/compiler/erg_compiler/error.rs
+++ b/compiler/erg_compiler/error.rs
@@ -1,3 +1,4 @@
+use std::fmt;
 use std::fmt::Display;
 
 use erg_common::astr::AtomicStr;
@@ -1814,6 +1815,12 @@ impl From<CompileError> for CompileErrors {
 
 impl MultiErrorDisplay<CompileError> for CompileErrors {}
 
+impl fmt::Display for CompileErrors {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.fmt_all(f)
+    }
+}
+
 impl CompileErrors {
     pub fn flush(&mut self) -> Self {
         Self(self.0.drain(..).collect())
diff --git a/compiler/erg_parser/error.rs b/compiler/erg_parser/error.rs
index 95d63f01..90e5997e 100644
--- a/compiler/erg_parser/error.rs
+++ b/compiler/erg_parser/error.rs
@@ -1,6 +1,8 @@
 //! defines `ParseError` and others.
 //!
 //! パーサーが出すエラーを定義
+use std::fmt;
+
 use erg_common::astr::AtomicStr;
 use erg_common::config::Input;
 use erg_common::error::{ErrorCore, ErrorDisplay, ErrorKind::*, Location, MultiErrorDisplay};
@@ -200,6 +202,12 @@ impl_stream_for_wrapper!(ParserRunnerErrors, ParserRunnerError);
 
 impl MultiErrorDisplay<ParserRunnerError> for ParserRunnerErrors {}
 
+impl fmt::Display for ParserRunnerErrors {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.fmt_all(f)
+    }
+}
+
 impl ParserRunnerErrors {
     pub fn convert(input: &Input, errs: ParseErrors, theme: Theme) -> Self {
         Self(