template things

examples/compiler.rs

@@ -0,0 +1,24 @@
+use badargs::{CliArg, CliArgInfo, Template};
+use std::collections::HashMap;
+
+#[derive(Default)]
+struct OutFile;
+
+fn main() {
+    let args = badargs::badargs(Template {
+        options: {
+            let mut map = HashMap::new();
+            map.insert(
+                Box::new(OutFile),
+                CliArgInfo {
+                    name: "output".to_string(),
+                    allow_short: true,
+                    takes_value: true,
+                },
+            );
+            map
+        },
+    });
+
+    let outfile = args.get::<OutFile>();
+}

src/lib.rs

@@ -1,7 +1,43 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
+use std::any::{Any, TypeId};
+use std::collections::HashMap;
+
+#[derive(Debug, Clone)]
+pub enum CliOption {
+    Flag(bool),
+    Value(String),
+}
+
+pub trait CliArg {
+    type Content;
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct Template {
+    pub options: HashMap<Box<dyn Any>, CliArgInfo>,
+}
+
+pub struct CliArgInfo {
+    pub name: String,
+    pub allow_short: bool,
+    pub takes_value: bool,
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct BadArgs {
+    options: HashMap<TypeId, CliArgInfo>,
+}
+
+impl BadArgs {
+    pub fn get<T: Default>(&self) -> Option<&CliArgInfo> {
+        self.options.get(&T::type_id())
     }
 }
+
+pub fn badargs(template: Template) -> BadArgs {
+    let options = template
+        .options
+        .into_iter()
+        .map(|(key, value)| (key.type_id(), value))
+        .collect();
+    BadArgs { options }
+}