AA: avoid NPE while evaluating operations with non-numbers

analysis/analysis-api-fe10/tests/org/jetbrains/kotlin/analysis/api/fe10/components/compileTimeConstantProvider/Fe10CompileTimeConstantEvaluatorTestGenerated.java

@@ -34,6 +34,12 @@ public class Fe10CompileTimeConstantEvaluatorTestGenerated extends AbstractCompi
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate"), Pattern.compile("^(.+)\\.kt$"), null, true);
     }
 
+    @Test
+    @TestMetadata("binaryExpressionWithString.kt")
+    public void testBinaryExpressionWithString() throws Exception {
+        runTest("analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate/binaryExpressionWithString.kt");
+    }
+
     @Test
     @TestMetadata("propertyInit_Byte.kt")
     public void testPropertyInit_Byte() throws Exception {

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/evaluate/FirCompileTimeConstantEvaluator.kt

@@ -115,14 +115,17 @@ internal object FirCompileTimeConstantEvaluator {
     // Unary operators
     private fun FirConstExpression<*>.evaluate(function: FirSimpleFunction): FirConstExpression<*>? {
         if (value == null) return null
-        return evalUnaryOp(
+        // TODO: there are a couple operations on String, such as .length and .toString
+        return kind.convertToNumber(value as? Number)?.let { opr ->
+            evalUnaryOp(
                 function.name.asString(),
                 kind.toCompileTimeType(),
-            kind.convertToNumber(value as? Number)!!
+                opr
             )?.let {
                 it.toConstantValueKind().toConstExpression(source, it)
             }
         }
+    }
 
     // Binary operators
     private fun FirConstExpression<*>.evaluate(
@@ -130,16 +133,21 @@ internal object FirCompileTimeConstantEvaluator {
         other: FirConstExpression<*>
     ): FirConstExpression<*>? {
         if (value == null || other.value == null) return null
-        return evalBinaryOp(
+        // TODO: there are a couple operations on Strings, such as .compareTo, .equals, or .plus
+        return kind.convertToNumber(value as? Number)?.let { opr1 ->
+            other.kind.convertToNumber(other.value as? Number)?.let { opr2 ->
+                evalBinaryOp(
                     function.name.asString(),
                     kind.toCompileTimeType(),
-            kind.convertToNumber(value as? Number)!!,
+                    opr1,
                     other.kind.toCompileTimeType(),
-            other.kind.convertToNumber(other.value as? Number)!!
+                    opr2
                 )?.let {
                     it.toConstantValueKind().toConstExpression(source, it)
                 }
             }
+        }
+    }
 
     ////// KINDS
 

analysis/analysis-api-fir/tests/org/jetbrains/kotlin/analysis/api/fir/components/compileTimeConstantProvider/FirCompileTimeConstantEvaluatorTestGenerated.java

@@ -34,6 +34,12 @@ public class FirCompileTimeConstantEvaluatorTestGenerated extends AbstractCompil
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate"), Pattern.compile("^(.+)\\.kt$"), null, true);
     }
 
+    @Test
+    @TestMetadata("binaryExpressionWithString.kt")
+    public void testBinaryExpressionWithString() throws Exception {
+        runTest("analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate/binaryExpressionWithString.kt");
+    }
+
     @Test
     @TestMetadata("propertyInit_Byte.kt")
     public void testPropertyInit_Byte() throws Exception {

analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate/binaryExpressionWithString.kt

@@ -0,0 +1,3 @@
+fun box(msg: String): String {
+    return <expr>"message" + msg</expr>
+}

analysis/analysis-api/testData/components/compileTimeConstantProvider/evaluate/binaryExpressionWithString.txt

@@ -0,0 +1,3 @@
+expression: "message" + msg
+constant: NOT_EVALUATED
+constantValueKind: NOT_EVALUATED