SONARPY-1008 S5607 (IncompatibleOperandsCheck) should not raise on type annotations (#1119)

Author: andrea-guarino-sonarsource

python-checks/src/main/java/org/sonar/python/checks/IncompatibleOperands.java

@@ -33,6 +33,7 @@
 import org.sonar.plugins.python.api.tree.BinaryExpression;
 import org.sonar.plugins.python.api.tree.Token;
 import org.sonar.plugins.python.api.tree.Tree;
+import org.sonar.plugins.python.api.tree.TypeAnnotation;
 import org.sonar.plugins.python.api.tree.UnaryExpression;
 import org.sonar.plugins.python.api.types.InferredType;
 
@@ -92,6 +93,11 @@ private class IncompatibleOperandsVisitor extends BaseTreeVisitor {
       this.context = context;
     }
 
+    @Override
+    public void visitTypeAnnotation(TypeAnnotation tree) {
+      // avoid raising FPs on type annotations
+    }
+
     @Override
     public void visitBinaryExpression(BinaryExpression binaryExpression) {
       InferredType leftType = binaryExpression.leftOperand().type();

python-checks/src/test/resources/checks/incompatibleOperands/arithmetic.py

@@ -78,3 +78,7 @@ def builtin_compliant():
   myvar += 2
 
   not myvar # coverage
+
+
+def type_annotations():
+  mode: "OpenBinaryMode" | "OpenTextMode"