From 4161bad54f690e77f53ca1f0f4426161e60fa4ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Barv=C3=AD=C5=99?= <barvirm@gmail.com>
Date: Fri, 31 Mar 2023 17:13:31 +0200
Subject: [PATCH] FIX lint clippy::len_without_is_empty (#451)

---
 src/eval/array.rs    | 5 +++++
 src/eval/str.rs      | 5 +++++
 src/syntax/node.rs   | 5 +++++
 src/syntax/parser.rs | 2 +-
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/eval/array.rs b/src/eval/array.rs
index 3006c91f4..8dcbd5a9b 100644
--- a/src/eval/array.rs
+++ b/src/eval/array.rs
@@ -41,6 +41,11 @@ impl Array {
         Self(vec)
     }
 
+    /// Return `true` if the length is 0.
+    pub fn is_empty(&self) -> bool {
+        self.0.len() == 0
+    }
+
     /// The length of the array.
     pub fn len(&self) -> i64 {
         self.0.len() as i64
diff --git a/src/eval/str.rs b/src/eval/str.rs
index d867e19c2..22b5498b4 100644
--- a/src/eval/str.rs
+++ b/src/eval/str.rs
@@ -34,6 +34,11 @@ impl Str {
         Self(EcoString::new())
     }
 
+    /// Return `true` if the length is 0.
+    pub fn is_empty(&self) -> bool {
+        self.0.len() == 0
+    }
+
     /// The length of the string in bytes.
     pub fn len(&self) -> i64 {
         self.0.len() as i64
diff --git a/src/syntax/node.rs b/src/syntax/node.rs
index afbebe97f..3c9bc049b 100644
--- a/src/syntax/node.rs
+++ b/src/syntax/node.rs
@@ -53,6 +53,11 @@ impl SyntaxNode {
         }
     }
 
+    /// Return `true` if the length is 0.
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
     /// The byte length of the node in the source text.
     pub fn len(&self) -> usize {
         match &self.0 {
diff --git a/src/syntax/parser.rs b/src/syntax/parser.rs
index 46150ff2b..e95da4af7 100644
--- a/src/syntax/parser.rs
+++ b/src/syntax/parser.rs
@@ -1324,7 +1324,7 @@ impl<'s> Parser<'s> {
         while self
             .nodes
             .last()
-            .map_or(false, |child| child.kind() == SyntaxKind::Error && child.len() == 0)
+            .map_or(false, |child| child.kind() == SyntaxKind::Error && child.is_empty())
         {
             self.nodes.pop();
         }