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package firrtlTests
import com.typesafe.scalalogging.LazyLogging
import java.io.{StringWriter,Writer}
import org.scalatest.{FlatSpec, Matchers}
import org.scalatest.junit.JUnitRunner
import firrtl.{Parser,FIRRTLEmitter}
import firrtl.ir.Circuit
import firrtl.Parser.IgnoreInfo
import firrtl.passes.{Pass, PassExceptions}
import firrtl.{
Transform,
TransformResult,
SimpleRun,
Chisel3ToHighFirrtl,
IRToWorkingIR,
ResolveAndCheck,
HighFirrtlToMiddleFirrtl,
MiddleFirrtlToLowFirrtl,
EmitFirrtl,
Compiler
}
import firrtl.Annotations.AnnotationMap
// An example methodology for testing Firrtl Passes
// Spec class should extend this class
abstract class SimpleTransformSpec extends FlatSpec with Matchers with Compiler with LazyLogging {
// Utility function
def parse(s: String): Circuit = Parser.parse(s.split("\n").toIterator, infoMode = IgnoreInfo)
// Executes the test. Call in tests.
def execute(writer: Writer, annotations: AnnotationMap, input: String, check: String) = {
compile(parse(input), annotations, writer)
logger.debug(writer.toString)
logger.debug(check)
(parse(writer.toString)) should be (parse(check))
}
// Executes the test, should throw an error
def failingexecute(writer: Writer, annotations: AnnotationMap, input: String): Exception = {
intercept[PassExceptions] {
compile(parse(input), annotations, writer)
}
}
}
trait LowTransformSpec extends SimpleTransformSpec {
def transform: Transform
def transforms (writer: Writer) = Seq(
new Chisel3ToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
new HighFirrtlToMiddleFirrtl(),
new MiddleFirrtlToLowFirrtl(),
new ResolveAndCheck(),
transform,
new EmitFirrtl(writer)
)
}
trait MiddleTransformSpec extends SimpleTransformSpec {
def transform: Transform
def transforms (writer: Writer) = Seq(
new Chisel3ToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
new HighFirrtlToMiddleFirrtl(),
new ResolveAndCheck(),
transform,
new EmitFirrtl(writer)
)
}
trait HighTransformSpec extends SimpleTransformSpec {
def transform: Transform
def transforms (writer: Writer) = Seq(
new Chisel3ToHighFirrtl(),
new IRToWorkingIR(),
new ResolveAndCheck(),
transform,
new EmitFirrtl(writer)
)
}
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