From 64d95837e9813541cf5b357de13865ce687ae98d Mon Sep 17 00:00:00 2001
From: Adam Brewer <adamhb321@gmail.com>
Date: Mon, 16 Oct 2023 07:37:12 -0400
Subject: Update Exercises Directory Names to Reflect Order

---
 exercises/21_macros/README.md  | 14 ++++++++++++++
 exercises/21_macros/macros1.rs | 16 ++++++++++++++++
 exercises/21_macros/macros2.rs | 16 ++++++++++++++++
 exercises/21_macros/macros3.rs | 20 ++++++++++++++++++++
 exercises/21_macros/macros4.rs | 21 +++++++++++++++++++++
 5 files changed, 87 insertions(+)
 create mode 100644 exercises/21_macros/README.md
 create mode 100644 exercises/21_macros/macros1.rs
 create mode 100644 exercises/21_macros/macros2.rs
 create mode 100644 exercises/21_macros/macros3.rs
 create mode 100644 exercises/21_macros/macros4.rs

(limited to 'exercises/21_macros')

diff --git a/exercises/21_macros/README.md b/exercises/21_macros/README.md
new file mode 100644
index 0000000..337816d
--- /dev/null
+++ b/exercises/21_macros/README.md
@@ -0,0 +1,14 @@
+# Macros
+
+Rust's macro system is very powerful, but also kind of difficult to wrap your
+head around. We're not going to teach you how to write your own fully-featured
+macros. Instead, we'll show you how to use and create them.
+
+If you'd like to learn more about writing your own macros, the
+[macrokata](https://github.com/tfpk/macrokata) project has a similar style
+of exercises to Rustlings, but is all about learning to write Macros.
+
+## Further information
+
+- [Macros](https://doc.rust-lang.org/book/ch19-06-macros.html)
+- [The Little Book of Rust Macros](https://veykril.github.io/tlborm/)
diff --git a/exercises/21_macros/macros1.rs b/exercises/21_macros/macros1.rs
new file mode 100644
index 0000000..678de6e
--- /dev/null
+++ b/exercises/21_macros/macros1.rs
@@ -0,0 +1,16 @@
+// macros1.rs
+//
+// Execute `rustlings hint macros1` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+macro_rules! my_macro {
+    () => {
+        println!("Check out my macro!");
+    };
+}
+
+fn main() {
+    my_macro();
+}
diff --git a/exercises/21_macros/macros2.rs b/exercises/21_macros/macros2.rs
new file mode 100644
index 0000000..788fc16
--- /dev/null
+++ b/exercises/21_macros/macros2.rs
@@ -0,0 +1,16 @@
+// macros2.rs
+//
+// Execute `rustlings hint macros2` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+fn main() {
+    my_macro!();
+}
+
+macro_rules! my_macro {
+    () => {
+        println!("Check out my macro!");
+    };
+}
diff --git a/exercises/21_macros/macros3.rs b/exercises/21_macros/macros3.rs
new file mode 100644
index 0000000..b795c14
--- /dev/null
+++ b/exercises/21_macros/macros3.rs
@@ -0,0 +1,20 @@
+// macros3.rs
+//
+// Make me compile, without taking the macro out of the module!
+//
+// Execute `rustlings hint macros3` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+mod macros {
+    macro_rules! my_macro {
+        () => {
+            println!("Check out my macro!");
+        };
+    }
+}
+
+fn main() {
+    my_macro!();
+}
diff --git a/exercises/21_macros/macros4.rs b/exercises/21_macros/macros4.rs
new file mode 100644
index 0000000..71b45a0
--- /dev/null
+++ b/exercises/21_macros/macros4.rs
@@ -0,0 +1,21 @@
+// macros4.rs
+//
+// Execute `rustlings hint macros4` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+#[rustfmt::skip]
+macro_rules! my_macro {
+    () => {
+        println!("Check out my macro!");
+    }
+    ($val:expr) => {
+        println!("Look at this other macro: {}", $val);
+    }
+}
+
+fn main() {
+    my_macro!();
+    my_macro!(7777);
+}
-- 
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