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// SPDX-License-Identifier: Apache-2.0
package firrtl.passes
import firrtl.DependencyAPIMigration
import firrtl.ir.Circuit
import firrtl.{CircuitState, FirrtlUserException, Transform}
/** [[Pass]] is simple transform that is generally part of a larger [[Transform]]
* Has an [[UnknownForm]], because larger [[Transform]] should specify form
*/
trait Pass extends Transform with DependencyAPIMigration {
def run(c: Circuit): Circuit
def execute(state: CircuitState): CircuitState = state.copy(circuit = run(state.circuit))
}
// Error handling
class PassException(message: String) extends FirrtlUserException(message)
class PassExceptions(val exceptions: Seq[PassException]) extends FirrtlUserException("\n" + exceptions.mkString("\n"))
class Errors {
val errors = collection.mutable.ArrayBuffer[PassException]()
def append(pe: PassException) = errors.append(pe)
def trigger() = errors.size match {
case 0 =>
case 1 => throw errors.head
case _ =>
append(new PassException(s"${errors.length} errors detected!"))
throw new PassExceptions(errors.toSeq)
}
}
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