feat(examples): add simple example

Cargo.lock

@@ -50,7 +50,7 @@ checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
 [[package]]
 name = "filecaster"
-version = "0.2.2"
+version = "0.2.3"
 dependencies = [
  "filecaster-derive",
  "merge",
@@ -62,7 +62,7 @@ dependencies = [
 
 [[package]]
 name = "filecaster-derive"
-version = "0.2.2"
+version = "0.2.3"
 dependencies = [
  "claims",
  "filecaster",

filecaster-derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "filecaster-derive"
-version = "0.2.2"
+version = "0.2.3"
 edition = "2024"
 authors = ["Kristofers Solo <dev@kristofers.xyz>"]
 description = "Procedural derive macro for `filecaster`: automatically implement `FromFile` for your structs."

filecaster/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "filecaster"
-version = "0.2.2"
+version = "0.2.3"
 edition = "2024"
 authors = ["Kristofers Solo <dev@kristofers.xyz>"]
 description = "Procedural macro to derive configuration from files, with optional merging capabilities."

filecaster/examples/data/simple.json

@@ -0,0 +1,5 @@
+{
+  "key": "json key",
+  "number": 123
+}
+

filecaster/examples/data/simple.toml

@@ -0,0 +1,3 @@
+key = "toml key"
+number = 456
+

filecaster/examples/simple.rs

@@ -0,0 +1,39 @@
+use filecaster::FromFile;
+use std::fs;
+
+#[derive(Debug, FromFile)]
+pub struct MyData {
+    #[from_file(default = "default key")]
+    pub key: String,
+    #[from_file(default = 0)]
+    pub number: i64,
+}
+
+fn main() {
+    let current_dir = std::env::current_dir().expect("Failed to get current directory");
+    let data_dir = current_dir.join("filecaster/examples/data");
+
+    let json_path = data_dir.join("simple.json");
+    let toml_path = data_dir.join("simple.toml");
+
+    let json_content = fs::read_to_string(&json_path)
+        .unwrap_or_else(|e| panic!("Failed to read JSON file at {:?}: {}", json_path, e));
+    let json_data: MyData = serde_json::from_str::<MyDataFile>(&json_content)
+        .unwrap_or_else(|e| panic!("Failed to parse JSON in {:?}: {}", json_path, e))
+        .into();
+
+    assert_eq!(json_data.key, "json key".to_string());
+    assert_eq!(json_data.number, 123);
+
+    let toml_content = fs::read_to_string(&toml_path)
+        .unwrap_or_else(|e| panic!("Failed to read TOML file at {:?}: {}", toml_path, e));
+    let toml_data: MyData = toml::from_str::<MyDataFile>(&toml_content)
+        .unwrap_or_else(|e| panic!("Failed to parse TOML in {:?}: {}", toml_path, e))
+        .into();
+
+    assert_eq!(toml_data.key, "toml key".to_string());
+    assert_eq!(toml_data.number, 456);
+
+    dbg!(&json_data);
+    dbg!(&toml_data);
+}