From 48d9d1e2e16da1a7c28584cf0b83f022dd196bb5 Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Sat, 23 Oct 2021 21:53:21 +0200
Subject: [PATCH] Read in AST takes Assignable instead of Ident

---
 ablescript/src/ast.rs       |  2 +-
 ablescript/src/interpret.rs | 11 +++++++++--
 ablescript/src/parser.rs    | 14 ++++++++------
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/ablescript/src/ast.rs b/ablescript/src/ast.rs
index fa30420..a5f1905 100644
--- a/ablescript/src/ast.rs
+++ b/ablescript/src/ast.rs
@@ -144,7 +144,7 @@ pub enum StmtKind {
         args: Vec<Expr>,
     },
     Print(Expr),
-    Read(Ident),
+    Read(Assignable),
     Melo(Ident),
     Rlyeh,
     Rickroll,
diff --git a/ablescript/src/interpret.rs b/ablescript/src/interpret.rs
index 1c7f096..356e9f3 100644
--- a/ablescript/src/interpret.rs
+++ b/ablescript/src/interpret.rs
@@ -280,14 +280,21 @@ impl ExecEnv {
                     .write_all(include_str!("rickroll").as_bytes())
                     .expect("Failed to write to stdout");
             }
-            StmtKind::Read(ident) => {
+            StmtKind::Read(assignable) => {
                 let mut value = 0;
                 for _ in 0..READ_BITS {
                     value <<= 1;
                     value += self.get_bit()? as i32;
                 }
 
-                self.get_var_mut(ident)?.value.replace(Value::Int(value));
+                match assignable.kind {
+                    AssignableKind::Variable => {
+                        self.get_var_mut(&assignable.ident)?
+                            .value
+                            .replace(Value::Int(value));
+                    }
+                    AssignableKind::Index { .. } => todo!(),
+                }
             }
         }
 
diff --git a/ablescript/src/parser.rs b/ablescript/src/parser.rs
index 1aa4876..a397287 100644
--- a/ablescript/src/parser.rs
+++ b/ablescript/src/parser.rs
@@ -370,12 +370,14 @@ impl<'source> Parser<'source> {
 
                 // Read input
                 Token::Read => {
-                    if let Some(Expr {
-                        kind: ExprKind::Variable(ident),
-                        span,
-                    }) = buf
-                    {
-                        break self.semi_terminated(StmtKind::Read(Ident::new(ident, span)))?;
+                    if let Some(Ok(assignable)) = buf.take().map(Assignable::from_expr) {
+                        self.require(Token::Semicolon)?;
+                        break StmtKind::Read(assignable);
+                    } else {
+                        return Err(Error::new(
+                            ErrorKind::UnexpectedToken(Token::Read),
+                            self.lexer.span(),
+                        ));
                     }
                 }