Rework examples and add entry macro for testing

1 files changed, 125 insertions, 0 deletions

diff --git a/examples/example-custom-pickable/src/main.rs b/examples/example-custom-pickable/src/main.rs
new file mode 100644
index 0000000..466ae43
--- /dev/null
+++ b/examples/example-custom-pickable/src/main.rs
@@ -0,0 +1,125 @@
+//! Example Custom Pickable
+//!
+//! > This example demonstrates how to use the Pickable trait to add parsing for your types
+//!
+//! Run:
+//! ```bash
+//! cargo run --manifest-path examples/example-custom-pickable/Cargo.toml --quiet -- connect 127.0.0.1:5012
+//! cargo run --manifest-path examples/example-custom-pickable/Cargo.toml --quiet -- connect 127.0.0.1
+//! ```
+//!
+//! Output:
+//! ```plaintext
+//! Connected to "127.0.0.1:5012"
+//! Failed to parse address
+//! ```
+
+use mingling::{Groupped, macros::route, parser::Pickable, prelude::*};
+
+// Define types that can be recognized by Mingling
+//               ________________________ `Pickable` trait needs to implement Default
+//              /                ________ The Groupped derive macro registers an ID for this type
+//              |               /           Mingling uses this ID to identify the type
+//              vvvvvvv         vvvvvvvv
+#[derive(Debug, Default, Clone, Groupped)]
+pub struct Address {
+    pub ip: [u8; 4],
+    pub port: u16,
+}
+
+// --------- IMPORTANT ---------
+impl Pickable for Address {
+    type Output = Address;
+    fn pick(args: &mut mingling::parser::Argument, flag: mingling::Flag) -> Option<Self::Output> {
+        // Extract the raw string from Argument using the Flag
+        let raw: String = args.pick_argument(flag)?.to_string();
+
+        // Use TryFrom to parse the address
+        Address::try_from(raw).ok()
+    }
+}
+// --------- IMPORTANT ---------
+
+dispatcher!("connect", CMDConnect => EntryConnect);
+pack!(ErrorParseAddressFailed = ());
+
+#[chain]
+fn handle_connect(prev: EntryConnect) -> Next {
+    let connect: Address =
+        route! { prev.pick_or_route((), ErrorParseAddressFailed::default().to_chain()).unpack() };
+    connect.to_chain()
+}
+
+#[renderer]
+fn render_address(addr: Address) {
+    r_println!("Connected to \"{}\"", addr.to_string());
+}
+
+#[renderer]
+fn render_error_parse_address_failed(_: ErrorParseAddressFailed) {
+    r_println!("Failed to parse address");
+}
+
+gen_program!();
+
+fn main() {
+    let mut program = ThisProgram::new();
+    program.with_dispatcher(CMDConnect);
+    program.exec_and_exit();
+}
+
+// Address conversion
+
+impl TryFrom<String> for Address {
+    type Error = String;
+
+    fn try_from(raw: String) -> Result<Self, Self::Error> {
+        // Expected format: "192.168.1.1:8080"
+        let parts: Vec<&str> = raw.split(':').collect();
+        if parts.len() != 2 {
+            return Err("Invalid format: expected 'IP:PORT'".to_string());
+        }
+
+        let ip_str = parts[0];
+        let port_str = parts[1];
+
+        // Parse IP address (4 octets separated by dots)
+        let ip_parts: Vec<&str> = ip_str.split('.').collect();
+        if ip_parts.len() != 4 {
+            return Err("Invalid IP address format".to_string());
+        }
+
+        let mut ip = [0u8; 4];
+        for (i, part) in ip_parts.iter().enumerate() {
+            ip[i] = part
+                .parse::<u8>()
+                .map_err(|_| format!("Invalid IP octet: {}", part))?;
+        }
+
+        // Parse port
+        let port = port_str
+            .parse::<u16>()
+            .map_err(|_| format!("Invalid port: {}", port_str))?;
+
+        Ok(Address { ip, port })
+    }
+}
+
+impl From<Address> for String {
+    fn from(addr: Address) -> String {
+        format!(
+            "{}.{}.{}.{}:{}",
+            addr.ip[0], addr.ip[1], addr.ip[2], addr.ip[3], addr.port
+        )
+    }
+}
+
+impl std::fmt::Display for Address {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}.{}.{}.{}:{}",
+            self.ip[0], self.ip[1], self.ip[2], self.ip[3], self.port
+        )
+    }
+}