Split WASM and native versions, and move iced support code to native

src/debug.rs

@@ -2,6 +2,7 @@ use std::num::NonZeroUsize;
 
 #[derive(Debug, Clone)]
 pub struct DebugLog {
+    enabled: bool,
     current: String,
     history: Vec<String>,
     max_history: Option<NonZeroUsize>,
@@ -11,6 +12,7 @@ pub struct DebugLog {
 impl DebugLog {
     pub fn new() -> Self {
         Self {
+            enabled: false,
             current: String::new(),
             history: vec![],
             max_history: None,
@@ -47,25 +49,41 @@ impl DebugLog {
     pub fn pop(&mut self) -> Option<String> {
         self.history.pop()
     }
+
+    pub fn enable(&mut self) {
+        self.enabled = true;
+    }
 }
 
 impl std::fmt::Write for DebugLog {
     fn write_str(&mut self, s: &str) -> std::fmt::Result {
-        let tmp = self.current.write_str(s);
-        self.rotate();
-        tmp
+        if self.enabled {
+            let tmp = self.current.write_str(s);
+            self.rotate();
+            tmp
+        } else {
+            Ok(())
+        }
     }
 
     fn write_char(&mut self, c: char) -> std::fmt::Result {
-        let tmp = self.current.write_char(c);
-        self.rotate();
-        tmp
+        if self.enabled {
+            let tmp = self.current.write_char(c);
+            self.rotate();
+            tmp
+        } else {
+            Ok(())
+        }
     }
 
     fn write_fmt(&mut self, args: std::fmt::Arguments<'_>) -> std::fmt::Result {
-        let tmp = self.current.write_fmt(args);
-        self.rotate();
-        tmp
+        if self.enabled {
+            let tmp = self.current.write_fmt(args);
+            self.rotate();
+            tmp
+        } else {
+            Ok(())
+        }
     }
 }