idk some parsing

src/main.rs

@@ -1,8 +1,11 @@
-// mod scene;
 
-// use crate::scene::Scene;
+use bnf::{Grammar, ParseTree};
-use bnf::Grammar;
 
+const IGNORE: [&'static str; 3] = [
+  "",
+  "",
+  "",
+];
 
 fn main() {
   
@@ -17,27 +20,71 @@ fn main() {
   println!("{}", vm_file);
   println!("---");
 
-  for tree in parsed {
+  let trees: Vec<ParseTree> = parsed.collect();
-    println!("{}", tree.lhs);
+
+  if trees.len() == 0 {
+    println!("No parse trees");
+    return;
   }
 
+  println!("Computed {} {} for program", trees.len(), pluralize(trees.len(), "tree", "trees"));
+
+  let tree = trees.get(0).expect("lmao how");
+
+  let program = Program::new(tree);
+
+  println!("{:?}", program);
+
   println!("---");
-
-  // println!("{:?}", );
-
-  // let sentence = grammar.generate();
-  // match sentence {
-  //   Ok(s) => println!(" --- random program\n{}\n ---", s),
-  //   Err(e) => println!("something went wrong: {}!", e)
-  // }
-
-  // let scene = Scene::new();
 }
 
-struct Program {
+#[derive(Debug)]
-  declarations: Vec<&dyn Declaration>
+struct Program<'a> {
+  uses: Vec<UseDeclaration<'a>>
 }
 
-trait Declaration {
+trait TermDigestor {
+  fn get_term_str(&self) -> &'static str;
+}
 
+impl TermDigestor for Program<'_> {
+  fn get_term_str(&self) -> &'static str {
+    return "<program>";
+  }
+}
+
+impl Program<'_> {
+  pub fn new(tree: &ParseTree) -> Self {
+    let program = Program {
+      uses: vec![]
+    };
+    program.digest(tree);
+    return program
+  }
+
+  fn digest(&self, mut tree: &ParseTree) {
+    // println!("digest {}", );
+    // mut because that recursion could get nasty.
+    
+    tree.lhs.to_string() == self.get_term_str()
+  }
+}
+
+#[derive(Debug)]
+struct UseDeclaration<'a> {
+  namespace: Vec<&'a str>
+}
+
+fn create_namespace(tree: ParseTree) -> Vec<&str> {
+  println!("{}", tree.lhs);
+  return vec![""]
+}
+
+fn pluralize<'a>(n: usize, singular: &'a str, plural: &'a str) -> &'a str {
+  if n == 1 {
+    return singular;
+  }
+  else {
+    return plural;
+  }
 }