From 6a0607b93a53ff891daab52a9069d8c239ad4220 Mon Sep 17 00:00:00 2001
From: John <j@soft.fish>
Date: Fri, 18 Jul 2025 05:36:38 -0400
Subject: [PATCH] sample-code: Add a super hacky format-string implementation
 using `eval` and `fmt` builtins

---
 sample-code/fstring.cl | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 sample-code/fstring.cl

diff --git a/sample-code/fstring.cl b/sample-code/fstring.cl
new file mode 100644
index 0000000..c3d91f3
--- /dev/null
+++ b/sample-code/fstring.cl
@@ -0,0 +1,32 @@
+
+fn f(__fmt: str) -> str {
+    let __out = "";
+    let __expr = "";
+    let __depth = 0;
+    for __c in chars(__fmt) {
+        match __c {
+            '{' => {
+                __depth += 1
+                if __depth <= 1 {
+                    continue
+                }
+            },
+            '}' => {
+                __depth -= 1
+                if __depth <= 0 {
+                    __out += fmt(eval(__expr))
+                    __expr = ""
+                    continue
+                }
+            },
+            ':' => if __depth == 1 {
+                __out += __expr + ": "
+            },
+            _ => {}
+        }
+        if __depth > 0 {
+            __expr += __c
+        } else __out += __c;
+    }
+    __out
+}