wip: add type gen

spec-gen/Cargo.toml

@@ -16,3 +16,5 @@ syn = { version = "1.0.98", features = [
 ] }
 prettyplease = { version = "0.1.10" }
 quote = { version = "1.0.18" }
+clap = { version = "4.4.6", features = ["derive"] }
+convert_case = "0.6.0"

spec-gen/src/generator.rs

@@ -1,6 +1,6 @@
 use crate::visitors::{
-    collate_generics_from, collect_lifetimes, collect_type_params, generics_to_arguments,
-    ArgumentsEditor, TypeNameVisitor,
+    as_syn_ident, collate_generics_from, collect_lifetimes, collect_type_params,
+    generics_to_arguments, ArgumentsEditor, TypeNameVisitor,
 };
 use std::{
     collections::{BTreeMap, HashMap},
@@ -12,10 +12,6 @@ use syn::{parse_quote, visit_mut::VisitMut, Ident, Item};
 
 const SOURCE_ROOT: &str = "ethereum-consensus/src";
 
-fn as_syn_ident(s: String) -> Ident {
-    syn::parse_str(&s).unwrap()
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
 enum Fork {
     #[default]

spec-gen/src/main.rs

@@ -1,6 +1,28 @@
 mod generator;
+mod type_generator;
 mod visitors;
 
+use clap::{Parser, ValueEnum};
+
+#[derive(Parser, Debug)]
+struct Args {
+    command: Command,
+}
+
+#[derive(ValueEnum, Debug, Clone)]
+enum Command {
+    Forks,
+    Types,
+}
+
 fn main() {
-    generator::run();
+    let args = Args::parse();
+    match args.command {
+        Command::Forks => {
+            generator::run();
+        }
+        Command::Types => {
+            type_generator::run();
+        }
+    }
 }