Ast: derive builders

Cargo.toml

@@ -7,4 +7,5 @@ edition = "2021"
 
 [dependencies]
 clap = { version = "4.4.8", features = ["derive"]}
+derive_builder = "0.12.0"
 toml = "0.8.8"

src/ast.rs

@@ -41,6 +41,7 @@ impl ToString for BaseType {
     }
 }
 
+#[derive(Builder)]
 pub struct Block<T: Statement> {
     statements: Vec<T>,
 }
@@ -88,6 +89,7 @@ impl Expr for Literal {
     }
 }
 
+#[derive(Builder)]
 pub struct Declaration <T: Expr> {
     variable: Variable,
     assn: T,
@@ -114,6 +116,7 @@ impl<T: Expr> AstNode for Declaration<T> {}
 
 impl<T: Expr> Statement for Declaration<T> {}
 
+#[derive(Clone, Builder)]
 pub struct Variable {
     type_: BaseType,
     quantifer: Quantifier,