From d491d3765ccd99921cad9854e1061757e0883cc3 Mon Sep 17 00:00:00 2001
From: tomoikey <55743826+tomoikey@users.noreply.github.com>
Date: Thu, 3 Oct 2024 05:31:36 +0900
Subject: [PATCH] add skip odd even

---
 src/rule/collection/skip/option.rs                 |  4 ++++
 src/rule/collection/skip/option/skip_even_index.rs | 13 +++++++++++++
 src/rule/collection/skip/option/skip_odd_index.rs  | 13 +++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 src/rule/collection/skip/option/skip_even_index.rs
 create mode 100644 src/rule/collection/skip/option/skip_odd_index.rs

diff --git a/src/rule/collection/skip/option.rs b/src/rule/collection/skip/option.rs
index 2e05b53..b551f16 100644
--- a/src/rule/collection/skip/option.rs
+++ b/src/rule/collection/skip/option.rs
@@ -1,8 +1,12 @@
 mod no_skip;
+mod skip_even_index;
 mod skip_first;
+mod skip_odd_index;
 
 pub use no_skip::NoSkip;
+pub use skip_even_index::SkipEvenIndex;
 pub use skip_first::SkipFirst;
+pub use skip_odd_index::SkipOddIndex;
 
 pub trait SkipOption {
     type Item;
diff --git a/src/rule/collection/skip/option/skip_even_index.rs b/src/rule/collection/skip/option/skip_even_index.rs
new file mode 100644
index 0000000..44183b6
--- /dev/null
+++ b/src/rule/collection/skip/option/skip_even_index.rs
@@ -0,0 +1,13 @@
+use crate::rule::SkipOption;
+
+pub struct SkipEvenIndex<ITEM> {
+    _phantom_data: std::marker::PhantomData<ITEM>,
+}
+
+impl<ITEM> SkipOption for SkipEvenIndex<ITEM> {
+    type Item = ITEM;
+    type Accumulator = ();
+    fn should_skip(i: usize, _: Option<&mut Self::Accumulator>, _: &Self::Item) -> bool {
+        i % 2 == 0
+    }
+}
diff --git a/src/rule/collection/skip/option/skip_odd_index.rs b/src/rule/collection/skip/option/skip_odd_index.rs
new file mode 100644
index 0000000..7a4b3ba
--- /dev/null
+++ b/src/rule/collection/skip/option/skip_odd_index.rs
@@ -0,0 +1,13 @@
+use crate::rule::SkipOption;
+
+pub struct SkipOddIndex<ITEM> {
+    _phantom_data: std::marker::PhantomData<ITEM>,
+}
+
+impl<ITEM> SkipOption for SkipOddIndex<ITEM> {
+    type Item = ITEM;
+    type Accumulator = ();
+    fn should_skip(i: usize, _: Option<&mut Self::Accumulator>, _: &Self::Item) -> bool {
+        i % 2 == 1
+    }
+}