From ed1b3bfb43640b1958b1c9a3bdeb9804d7775c1a Mon Sep 17 00:00:00 2001
From: Erin <erin@erindesu.cz>
Date: Fri, 6 May 2022 21:08:16 +0200
Subject: [PATCH] Implemented all coercions for undefined

---
 ablescript/src/variables.rs | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/ablescript/src/variables.rs b/ablescript/src/variables.rs
index 91c3c77..37259b5 100644
--- a/ablescript/src/variables.rs
+++ b/ablescript/src/variables.rs
@@ -184,6 +184,12 @@ impl Value {
     /// Coerce a value to an integer.
     pub fn into_isize(self) -> isize {
         match self {
+            Value::Nul => consts::ANSWER,
+            Value::Undefined => rand::random(),
+            Value::Str(text) => text
+                .parse()
+                .unwrap_or_else(|_| text.chars().map(|cr| cr as isize).sum()),
+            Value::Int(i) => i,
             Value::Abool(a) => a as _,
             Value::Functio(f) => match f {
                 Functio::Bf {
@@ -211,12 +217,6 @@ impl Value {
                 }
                 Functio::Eval(code) => code.bytes().map(|x| x as isize).sum(),
             },
-            Value::Int(i) => i,
-            Value::Nul => consts::ANSWER,
-            Value::Undefined => todo!("undefined -> isize coercion"),
-            Value::Str(text) => text
-                .parse()
-                .unwrap_or_else(|_| text.chars().map(|cr| cr as isize).sum()),
             Value::Cart(c) => c
                 .into_iter()
                 .map(|(i, v)| i.into_isize() * v.borrow().clone().into_isize())
@@ -292,11 +292,10 @@ impl Value {
     /// Coerce a value to a functio.
     pub fn into_functio(self) -> Functio {
         match self {
-            Value::Nul => Functio::Able {
+            Value::Nul | Value::Undefined => Functio::Able {
                 body: vec![],
                 params: vec![],
             },
-            Value::Undefined => todo!("undefined -> functio coercion"),
             Value::Str(s) => Functio::Eval(s),
             Value::Int(i) => Functio::Bf {
                 instructions: {
@@ -350,7 +349,10 @@ impl Value {
     pub fn into_cart(self) -> Cart {
         match self {
             Value::Nul => HashMap::new(),
-            Value::Undefined => todo!("undefined -> cart coercion"),
+            Value::Undefined => [(2, 4), (4, 2)]
+                .into_iter()
+                .map(|(k, v)| (Value::Int(k), ValueRef::new(Value::Int(v))))
+                .collect(),
             Value::Str(s) => s
                 .chars()
                 .enumerate()
@@ -458,7 +460,7 @@ impl Value {
     pub fn length(&self) -> isize {
         match self {
             Value::Nul => 0,
-            Value::Undefined => todo!("undefined length"),
+            Value::Undefined => -1,
             Value::Str(s) => s.len() as _,
             Value::Int(i) => i.count_zeros() as _,
             Value::Abool(a) => match a {