Validate Flutter LLM settings before FFI calls

Author: DevDesai444

sdk/runanywhere-flutter/packages/runanywhere/lib/native/dart_bridge_llm.dart

@@ -18,7 +18,7 @@ import 'dart:ffi';
 import 'dart:isolate'; // Keep for non-streaming generation
 
 import 'package:ffi/ffi.dart';
-
+import 'package:runanywhere/features/llm/llm_configuration.dart';
 import 'package:runanywhere/foundation/logging/sdk_logger.dart';
 import 'package:runanywhere/native/ffi_types.dart';
 import 'package:runanywhere/native/platform_loader.dart';
@@ -241,6 +241,12 @@ class DartBridgeLLM {
     double temperature = 0.7,
     String? systemPrompt,
   }) async {
+    _validateGenerationParameters(
+      maxTokens: maxTokens,
+      temperature: temperature,
+      systemPrompt: systemPrompt,
+    );
+
     final handle = getHandle();
 
     if (!isLoaded) {
@@ -284,6 +290,13 @@ class DartBridgeLLM {
     double temperature = 0.7,
     String? systemPrompt,
   }) {
+    _validateGenerationParameters(
+      maxTokens: maxTokens,
+      temperature: temperature,
+      systemPrompt: systemPrompt,
+      streamingEnabled: true,
+    );
+
     final handle = getHandle();
 
     if (!isLoaded) {
@@ -367,6 +380,21 @@ class DartBridgeLLM {
     }
   }
 
+  void _validateGenerationParameters({
+    required int maxTokens,
+    required double temperature,
+    String? systemPrompt,
+    bool streamingEnabled = false,
+  }) {
+    LLMConfiguration(
+      contextLength: 32768,
+      maxTokens: maxTokens,
+      temperature: temperature,
+      systemPrompt: systemPrompt,
+      streamingEnabled: streamingEnabled,
+    ).validate();
+  }
+
   // MARK: - Cleanup
 
   /// Destroy the component and release resources.

sdk/runanywhere-flutter/packages/runanywhere/lib/public/runanywhere.dart

@@ -1975,6 +1975,8 @@ class RunAnywhere {
         tokensPerSecond: tokensPerSecond,
         structuredData: structuredData,
       );
+    } on SDKError {
+      rethrow;
     } catch (e) {
       // Track generation failure
       TelemetryService.shared.trackError(