Introduce set input/output API to Module.

extension/apple/ExecuTorch/Exported/ExecuTorch+Module.swift

@@ -176,3 +176,123 @@ public extension Module {
     try execute("forward")
   }
 }
+
+@available(*, deprecated, message: "This API is experimental.")
+public extension Module {
+  /// Sets a single input value for a method at the specified index.
+  ///
+  /// - Parameters:
+  ///   - value: The input as a `ValueConvertible`.
+  ///   - method: The method name.
+  ///   - index: Zero-based input index.
+  /// - Throws: If setting the input fails.
+  func setInput(_ value: ValueConvertible, for method: String, at index: Int) throws {
+    try __setInput(value.asValue(), forMethod: method, at: index)
+  }
+
+  /// Sets a single input value for a method at index 0.
+  ///
+  /// - Parameters:
+  ///   - value: The input as a `ValueConvertible`.
+  ///   - method: The method name.
+  /// - Throws: If setting the input fails.
+  func setInput(_ value: ValueConvertible, for method: String) throws {
+    try setInput(value, for: method, at: 0)
+  }
+
+  /// Sets a single input value for the "forward" method at the specified index.
+  ///
+  /// - Parameters:
+  ///   - value: The input as a `ValueConvertible`.
+  ///   - index: Zero-based input index.
+  /// - Throws: If setting the input fails.
+  func setInput(_ value: ValueConvertible, at index: Int) throws {
+    try setInput(value, for: "forward", at: index)
+  }
+
+  /// Sets the first input value (index 0) for the "forward" method.
+  ///
+  /// - Parameter value: The input as a `ValueConvertible`.
+  /// - Throws: If setting the input fails.
+  func setInput(_ value: ValueConvertible) throws {
+    try setInput(value, for: "forward", at: 0)
+  }
+
+  /// Sets all input values for a method.
+  ///
+  /// - Parameters:
+  ///   - values: The inputs as an array of `ValueConvertible`.
+  ///   - method: The method name.
+  /// - Throws: If setting the inputs fails.
+  func setInputs(_ values: [ValueConvertible], for method: String) throws {
+    try __setInputs(values.map { $0.asValue() }, forMethod: method)
+  }
+
+  /// Sets all input values for the "forward" method.
+  ///
+  /// - Parameter values: The inputs as an array of `ValueConvertible`.
+  /// - Throws: If setting the inputs fails.
+  func setInputs(_ values: [ValueConvertible]) throws {
+    try setInputs(values, for: "forward")
+  }
+
+  /// Sets all input values for a method using variadic arguments.
+  ///
+  /// - Parameters:
+  ///   - values: The inputs as a variadic list of `ValueConvertible`.
+  ///   - method: The method name.
+  /// - Throws: If setting the inputs fails.
+  func setInputs(_ values: ValueConvertible..., for method: String) throws {
+    try setInputs(values, for: method)
+  }
+
+  /// Sets all input values for the "forward" method using variadic arguments.
+  ///
+  /// - Parameter values: The inputs as a variadic list of `ValueConvertible`.
+  /// - Throws: If setting the inputs fails.
+  func setInputs(_ values: ValueConvertible...) throws {
+    try setInputs(values, for: "forward")
+  }
+
+  /// Sets the output location for a method at the specified index.
+  ///
+  /// Only tensor outputs are supported. The provided value must wrap a tensor
+  /// with compatible shape and data type for the method’s output slot.
+  ///
+  /// - Parameters:
+  ///   - value: The output buffer as a `ValueConvertible` (tensor).
+  ///   - method: The method name.
+  ///   - index: Zero-based output index.
+  /// - Throws: If setting the output fails.
+  func setOutput(_ value: ValueConvertible, for method: String, at index: Int) throws {
+    try __setOutput(value.asValue(), forMethod: method, at: index)
+  }
+
+  /// Sets the output location for a method at index 0.
+  ///
+  /// - Parameters:
+  ///   - value: The output buffer as a `ValueConvertible` (tensor).
+  ///   - method: The method name.
+  /// - Throws: If setting the output fails.
+  func setOutput(_ value: ValueConvertible, for method: String) throws {
+    try setOutput(value, for: method, at: 0)
+  }
+
+  /// Sets the output location for the "forward" method at the specified index.
+  ///
+  /// - Parameters:
+  ///   - value: The output buffer as a `ValueConvertible` (tensor).
+  ///   - index: Zero-based output index.
+  /// - Throws: If setting the output fails.
+  func setOutput(_ value: ValueConvertible, at index: Int) throws {
+    try setOutput(value, for: "forward", at: index)
+  }
+
+  /// Sets the first output location (index 0) for the "forward" method.
+  ///
+  /// - Parameter value: The output buffer as a `ValueConvertible` (tensor).
+  /// - Throws: If setting the output fails.
+  func setOutput(_ value: ValueConvertible) throws {
+    try setOutput(value, for: "forward", at: 0)
+  }
+}

extension/apple/ExecuTorch/Exported/ExecuTorchModule.h

@@ -358,6 +358,145 @@ __attribute__((deprecated("This API is experimental.")))
     NS_SWIFT_UNAVAILABLE("")
     NS_RETURNS_RETAINED;
 
+/**
+ * Sets a single input value for the "forward" method at index 0.
+ *
+ * @param value The input value.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInput:(ExecuTorchValue *)value
+           error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets a single input value for the "forward" method at the specified index.
+ *
+ * @param value The input value.
+ * @param index Zero-based input index.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInput:(ExecuTorchValue *)value
+         atIndex:(NSInteger)index
+           error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets a single input value for the specified method at index 0.
+ *
+ * @param value The input value.
+ * @param methodName The method name.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInput:(ExecuTorchValue *)value
+       forMethod:(NSString *)methodName
+           error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets a single input value for the specified method at the given index.
+ *
+ * The module retains the provided value to keep its backing storage alive
+ * until the value is overwritten or the module is deallocated.
+ *
+ * @param value The input value.
+ * @param methodName The method name.
+ * @param index Zero-based input index.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInput:(ExecuTorchValue *)value
+       forMethod:(NSString *)methodName
+         atIndex:(NSInteger)index
+           error:(NSError **)error NS_REFINED_FOR_SWIFT;
+
+/**
+ * Sets all input values for the "forward" method.
+ *
+ * The number and types of values must match the method’s declared inputs.
+ *
+ * @param values The input values, one per declared input.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInputs:(NSArray<ExecuTorchValue *> *)values
+            error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets all input values for the specified method.
+ *
+ * The module retains the provided values to keep their backing storage alive
+ * until the values are overwritten or the module is deallocated.
+ *
+ * @param values The input values, one per declared input.
+ * @param methodName The method name.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setInputs:(NSArray<ExecuTorchValue *> *)values
+        forMethod:(NSString *)methodName
+            error:(NSError **)error NS_REFINED_FOR_SWIFT;
+
+/**
+ * Sets the output buffer for the "forward" method at index 0.
+ *
+ * Only tensor outputs are supported. The provided value must wrap a tensor
+ * compatible with the method’s output slot.
+ *
+ * @param value The output buffer (must wrap a tensor).
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setOutput:(ExecuTorchValue *)value
+            error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets the output buffer for the "forward" method at the specified index.
+ *
+ * Only tensor outputs are supported. The provided value must wrap a tensor
+ * compatible with the method’s output slot.
+ *
+ * @param value The output buffer (must wrap a tensor).
+ * @param index Zero-based output index.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setOutput:(ExecuTorchValue *)value
+          atIndex:(NSInteger)index
+            error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets the output buffer for the specified method at index 0.
+ *
+ * Only tensor outputs are supported. The provided value must wrap a tensor
+ * compatible with the method’s output slot.
+ *
+ * @param value The output buffer (must wrap a tensor).
+ * @param methodName The method name.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setOutput:(ExecuTorchValue *)value
+        forMethod:(NSString *)methodName
+            error:(NSError **)error NS_SWIFT_UNAVAILABLE("");
+
+/**
+ * Sets the output buffer for the specified method at the given index.
+ *
+ * The module retains the provided value to keep its backing storage alive
+ * until the value is overwritten or the module is deallocated.
+ * Only tensor outputs are supported.
+ *
+ * @param value The output buffer (must wrap a tensor).
+ * @param methodName The method name.
+ * @param index Zero-based output index.
+ * @param error On failure, set to an NSError describing the issue.
+ * @return YES on success; NO otherwise.
+ */
+- (BOOL)setOutput:(ExecuTorchValue *)value
+        forMethod:(NSString *)methodName
+          atIndex:(NSInteger)index
+            error:(NSError **)error NS_REFINED_FOR_SWIFT;
+
 + (instancetype)new NS_UNAVAILABLE;
 - (instancetype)init NS_UNAVAILABLE;