A bunch of prerequisites before we can do arrays, part 1

forge_core/src/parser/ast_nodes/expr.rs

@@ -18,6 +18,7 @@ impl AstNode for Expr {
         PRATT_PARSER
             .map_primary(|term| match term.as_rule() {
                 PestRule::number => Expr::Number(term.into_number()),
+                PestRule::alloc => Expr::New(Expr::from_pair(term.first()).into()),
                 PestRule::name => Expr::Name(String::from(term.as_str())),
                 PestRule::expr => Expr::from_pair(term),
                 PestRule::string => Self::String(term.into_quoted_string()),
@@ -269,4 +270,9 @@ mod test {
             Ok(Expr::Call(Call { target: "blah".into(), args: vec![Expr::String("foo".into()), 2.into()] }))
         );
     }
+
+    #[test]
+    fn alloc() {
+        assert_eq!(Expr::from_str("new(8)"), Ok(Expr::New(8.into())));
+    }
 }

forge_core/src/parser/forge.pest

@@ -63,7 +63,9 @@ operator = _{
 }
 
 expr = { prefix* ~ term ~ suffix* ~ (operator ~ prefix* ~ term ~ suffix*)* }
-term = _{ number | name | "(" ~ expr ~ ")" | string }
+term = _{ number | alloc | name | "(" ~ expr ~ ")" | string }
+alloc = { "new" ~ "(" ~ expr ~ ")" }
+
 
 suffix    = _{ subscript | arglist }
 subscript = { "[" ~ expr ~ "]" }