simulate method

Future<SimulateResult> simulate(String functionName, List args, { String? from, BigInt? value, String block = 'latest', })

Simulates a contract function call.

Implementation

Future<SimulateResult> simulate(
  String functionName,
  List<dynamic> args, {
  String? from,
  BigInt? value,
  String block = 'latest',
}) async {
  final function = _getFunction(functionName);
  final callData = AbiEncoder.encodeFunction(function.signature, args);

  final request = CallRequest(
    from: from,
    to: address,
    data: callData,
    value: value,
  );

  try {
    final result = await publicClient.call(request, block);
    final decoded = AbiDecoder.decodeFunction(function.outputs, result);

    // Estimate gas for the call
    final gasUsed = await publicClient.estimateGas(request);

    return SimulateResult(
      result: decoded,
      gasUsed: gasUsed,
      success: true,
    );
  } on Exception catch (e) {
    // Try to decode error message
    String? revertReason;
    if (e.toString().contains('execution reverted')) {
      // Extract revert data if available
      // This is a simplified implementation
      revertReason = e.toString();
    }

    return SimulateResult(
      result: [],
      gasUsed: BigInt.zero,
      success: false,
      revertReason: revertReason,
    );
  }
}