1 files changed, 19 insertions, 12 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 60a406f..487a5ce 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,4 @@
 use log::{Level, error, info};
-use console_log;
 use wasm_bindgen::prelude::*;
 
 pub mod forth;
@@ -25,11 +24,11 @@ impl ExportedByteCode {
     fn tr_op(op: &forth::vm::OpCode) -> String {
         use forth::vm::OpCode::*;
         let s = match op {
-            If(t, None) => format!("If({}, none)", t),
-            If(t, Some(f)) => format!("If({}, {})", t, f),
-            TIf(t, None) => format!("TIf({}, none)", t),
-            TIf(t, Some(f)) => format!("TIf({}, {})", t, f),
-            other => format!("{:?}", other),
+            If(t, None) => format!("If({t}, none)"),
+            If(t, Some(f)) => format!("If({t}, {f})"),
+            TIf(t, None) => format!("TIf({t}, none)"),
+            TIf(t, Some(f)) => format!("TIf({t}, {f})"),
+            other => format!("{other:?}"),
         };
         s.to_string()
     }
@@ -47,6 +46,10 @@ impl ExportedByteCode {
         self.0.len()
     }
 
+    pub fn is_empty(&self) -> bool {
+        self.0.is_empty()
+    }
+
     pub fn at(&self, offset: usize) -> String {
         self.0[offset].clone()
     }
@@ -86,6 +89,10 @@ impl ExportedWordAnnotations {
         self.0.len()
     }
 
+    pub fn is_empty(&self) -> bool {
+        self.0.is_empty()
+    }
+
     pub fn at(&self, offset: usize) -> ExportedAnnotation {
         self.0[offset].clone()
     }
@@ -104,15 +111,15 @@ impl ExportedVM {
     }
 
     pub fn compile(&mut self, text: &str) -> bool {
-        let mut comp = forth::compiler::Compiler::new(&text);
+        let mut comp = forth::compiler::Compiler::new(text);
         if let Err(e) = comp.compile() {
-            error!("couldn't compile program text: {:?}", e);
+            error!("couldn't compile program text: {e:?}");
             return false
         }
         self.annos =
             comp.annotations.iter()
                 .map(|word_anno| -> ExportedWordAnnotations {
-                    word_anno.into_iter().map(|a| a.into()).collect()
+                    word_anno.iter().map(|a| a.into()).collect()
                 })
                 .collect();
         let vm = forth::vm::VM::new(comp.wordlist);
@@ -124,7 +131,7 @@ impl ExportedVM {
         let Some(vm) = &mut self.vm else {
             return Err("no vm".to_string())
         };
-        vm.tick().or_else(|err| Err(format!("runtime error: {:?}", err)))
+        vm.tick().map_err(|err| format!("runtime error: {err:?}"))
     }
 
     pub fn run(&mut self) -> Result<usize, String> {
@@ -134,7 +141,7 @@ impl ExportedVM {
 
         vm.ip.word = 0;
         vm.ip.offset = 0;
-        vm.run().or_else(|err| Err(format!("runtime error: {:?}", err)))
+        vm.run().map_err(|err| format!("runtime error: {err:?}"))
     }
 
     pub fn stack(&self) -> Vec<i32> {
@@ -142,7 +149,7 @@ impl ExportedVM {
             return vec![]
         };
 
-        return vm.stack.0.clone()
+        vm.stack.0.clone()
     }
 
     pub fn wordlist(&self) -> Vec<ExportedByteCode> {