Fix WASM casting bug (#73)

* workaround for wasm compiler bug * flutter_math version bump for 3.27 compatibility * updated changelog --------- Co-authored-by: Eric Dhom <[email protected]>
simpleclub · Jan 13, 2025 · d7aac6a · d7aac6a
1 parent 332ab0e
commit d7aac6a
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Showing 3 changed files with 13 additions and 6 deletions.
diff --git a/math_keyboard/CHANGELOG.md b/math_keyboard/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.3.2
+
+* Workaround for dart2wasm [bug](https://github.com/dart-lang/sdk/issues/59782).
+
 ## 0.3.1
 
 * Updated README

diff --git a/math_keyboard/lib/src/foundation/tex2math.dart b/math_keyboard/lib/src/foundation/tex2math.dart
@@ -311,8 +311,8 @@ class TeXParser {
     final result = <Expression>[];
     Expression left;
     Expression right;
-    for (var i = 0; i < _outputStack.length; i++) {
-      switch (_outputStack[i]) {
+    for (final element in _outputStack) {
+      switch (element) {
         case '+':
           right = result.removeLast();
           left = result.removeLast();
@@ -391,11 +391,14 @@ class TeXParser {
             // ignore: empty_catches
           } catch (e) {}
           break;
+        // workaround for WASM casting bug, needs at least one non-string case
+        // remove when https://github.com/dart-lang/sdk/issues/59782 is fixed
+        case 0:
         default:
-          if (_outputStack[i] is String) {
-            result.add(Variable(_outputStack[i]));
+          if (element is String) {
+            result.add(Variable(element));
           } else {
-            result.add(Number(_outputStack[i]));
+            result.add(Number(element));
           }
       }
     }

diff --git a/math_keyboard/pubspec.yaml b/math_keyboard/pubspec.yaml
@@ -2,7 +2,7 @@ name: math_keyboard
 description: >-2
   Math expression editing using an on-screen software keyboard or physical keyboard input in a
   typeset input field in Flutter.
-version: 0.3.1
+version: 0.3.2
 homepage: https://github.com/simpleclub/math_keyboard/tree/main/math_keyboard
 
 environment: