Merge pull request #1143 from freechipsproject/replace-io-source-with-fileutils

Followup to PR #1142

17 files changed, 38 insertions, 38 deletions

diff --git a/build.sbt b/build.sbt
index be05bc0b..11a2b490 100644
--- a/build.sbt
+++ b/build.sbt
@@ -32,6 +32,7 @@ addCompilerPlugin(scalafixSemanticdb) // enable SemanticDB
 
 scalacOptions := scalacOptionsVersion(scalaVersion.value) ++ Seq(
   "-deprecation",
+  "-unchecked",
   "-Yrangepos",          // required by SemanticDB compiler plugin
   "-Ywarn-unused-import" // required by `RemoveUnused` rule
 )
diff --git a/src/main/scala/firrtl/Driver.scala b/src/main/scala/firrtl/Driver.scala
index f68a2035..642e7f3f 100644
--- a/src/main/scala/firrtl/Driver.scala
+++ b/src/main/scala/firrtl/Driver.scala
@@ -14,7 +14,7 @@ import firrtl.stage.{FirrtlExecutionResultView, FirrtlStage}
 import firrtl.stage.phases.DriverCompatibility
 import firrtl.options.{StageUtils, Phase, Viewer}
 import firrtl.options.phases.DeletedWrapper
-import firrtl.FileUtils.getText
+import firrtl.FileUtils
 
 
 /**
@@ -112,7 +112,7 @@ object Driver {
       JsonProtocol.deserializeTry(file).recoverWith { case jsonException =>
         // Try old protocol if new one fails
         Try {
-          val yaml = getText(file).parseYaml
+          val yaml = FileUtils.getText(file).parseYaml
           val result = yaml.convertTo[List[LegacyAnnotation]]
           val msg = s"$file is a YAML file!\n" +
                     (" "*9) + "YAML Annotation files are deprecated! Use JSON"
diff --git a/src/main/scala/firrtl/FileUtils.scala b/src/main/scala/firrtl/FileUtils.scala
index b859073d..1007eb2a 100644
--- a/src/main/scala/firrtl/FileUtils.scala
+++ b/src/main/scala/firrtl/FileUtils.scala
@@ -98,7 +98,7 @@ object FileUtils {
     * @param fileName The file to read
     */
   def getLines(fileName: String): Seq[String] = {
-    val source = io.Source.fromFile(fileName)
+    val source = scala.io.Source.fromFile(fileName)
     val lines = source.getLines()
     source.close()
     lines.toSeq
@@ -110,7 +110,7 @@ object FileUtils {
     * @param file a java File to be read
     */
   def getLines(file: File): Seq[String] = {
-    val source = io.Source.fromFile(file)
+    val source = scala.io.Source.fromFile(file)
     val lines = source.getLines()
     source.close()
     lines.toSeq
@@ -122,7 +122,7 @@ object FileUtils {
     * @param fileName The file to read
     */
   def getText(fileName: String): String = {
-    val source = io.Source.fromFile(fileName)
+    val source = scala.io.Source.fromFile(fileName)
     val text = source.mkString
     source.close()
     text
@@ -134,7 +134,7 @@ object FileUtils {
     * @param file a java File to be read
     */
   def getText(file: File): String = {
-    val source = io.Source.fromFile(file)
+    val source = scala.io.Source.fromFile(file)
     val text = source.mkString
     source.close()
     text
@@ -148,7 +148,9 @@ object FileUtils {
     */
   def getLinesResource(resourceName: String): Seq[String] = {
     val inputStream = getClass.getResourceAsStream(resourceName)
-    val text = io.Source.fromInputStream(inputStream).getLines().toSeq
+    // the .toList at the end is critical to force stream to be read.
+    // Without it the lazy evaluation can cause failure in MultiThreadingSpec
+    val text = scala.io.Source.fromInputStream(inputStream).getLines().toList
     inputStream.close()
     text
   }
@@ -161,7 +163,7 @@ object FileUtils {
     */
   def getTextResource(resourceName: String): String = {
     val inputStream = getClass.getResourceAsStream(resourceName)
-    val text = io.Source.fromInputStream(inputStream).mkString
+    val text = scala.io.Source.fromInputStream(inputStream).mkString
     inputStream.close()
     text
   }
diff --git a/src/main/scala/firrtl/options/phases/GetIncludes.scala b/src/main/scala/firrtl/options/phases/GetIncludes.scala
index 9e198c61..cb9bb840 100644
--- a/src/main/scala/firrtl/options/phases/GetIncludes.scala
+++ b/src/main/scala/firrtl/options/phases/GetIncludes.scala
@@ -8,6 +8,7 @@ import firrtl.AnnotationSeq
 import firrtl.annotations.{AnnotationFileNotFoundException, JsonProtocol, LegacyAnnotation}
 import firrtl.annotations.AnnotationYamlProtocol._
 import firrtl.options.{InputAnnotationFileAnnotation, Phase, StageUtils}
+import firrtl.FileUtils
 
 import java.io.File
 
@@ -27,7 +28,7 @@ class GetIncludes extends Phase {
     JsonProtocol.deserializeTry(file).recoverWith { case jsonException =>
       // Try old protocol if new one fails
       Try {
-        val yaml = io.Source.fromFile(file).getLines().mkString("\n").parseYaml
+        val yaml = FileUtils.getText(file).parseYaml
         val result = yaml.convertTo[List[LegacyAnnotation]]
         val msg = s"$file is a YAML file!\n" + (" "*9) + "YAML Annotation files are deprecated! Use JSON"
         StageUtils.dramaticWarning(msg)
diff --git a/src/main/scala/firrtl/passes/memlib/YamlUtils.scala b/src/main/scala/firrtl/passes/memlib/YamlUtils.scala
index eab1fe37..a43adfe2 100644
--- a/src/main/scala/firrtl/passes/memlib/YamlUtils.scala
+++ b/src/main/scala/firrtl/passes/memlib/YamlUtils.scala
@@ -4,6 +4,7 @@ package firrtl.passes
 package memlib
 import net.jcazevedo.moultingyaml._
 import java.io.{CharArrayWriter, File, PrintWriter}
+import firrtl.FileUtils
 
 
 object CustomYAMLProtocol extends DefaultYamlProtocol {
@@ -23,7 +24,7 @@ case class Config(pin: Pin, source: Source, top: Top)
 class YamlFileReader(file: String) {
   def parse[A](implicit reader: YamlReader[A]) : Seq[A] = {
     if (new File(file).exists) {
-      val yamlString = scala.io.Source.fromFile(file).getLines.mkString("\n")
+      val yamlString = FileUtils.getText(file)
       yamlString.parseYamls flatMap (x =>
         try Some(reader read x)
         catch { case e: Exception => None }
diff --git a/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala b/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
index f0f1c067..665861ef 100644
--- a/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
+++ b/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
@@ -6,6 +6,7 @@ import firrtl.stage._
 
 import firrtl.{AnnotationSeq, EmitAllModulesAnnotation, EmitCircuitAnnotation, FirrtlExecutionResult, Parser}
 import firrtl.annotations.NoTargetAnnotation
+import firrtl.FileUtils
 import firrtl.proto.FromProto
 import firrtl.options.{InputAnnotationFileAnnotation, OptionsException, Phase,
   StageOptions, StageUtils}
@@ -89,7 +90,7 @@ object DriverCompatibility {
           annotations.collectFirst{ case FirrtlFileAnnotation(f) =>
             FirrtlStageUtils.getFileExtension(f) match {
               case ProtoBufFile => FromProto.fromFile(f).main
-              case FirrtlFile   => Parser.parse(io.Source.fromFile(f).getLines().mkString("\n")).main } } )))
+              case FirrtlFile   => Parser.parse(FileUtils.getText(f)).main } } )))
 
   /** Determine the target directory with the following precedence (highest to lowest):
     *  - Explicitly from the user-specified [[firrtl.options.TargetDirAnnotation TargetDirAnnotation]]
diff --git a/src/main/scala/firrtl/util/BackendCompilationUtilities.scala b/src/main/scala/firrtl/util/BackendCompilationUtilities.scala
index e0341bf1..beb44ad0 100644
--- a/src/main/scala/firrtl/util/BackendCompilationUtilities.scala
+++ b/src/main/scala/firrtl/util/BackendCompilationUtilities.scala
@@ -7,6 +7,7 @@ import java.nio.file.Files
 import java.text.SimpleDateFormat
 import java.util.Calendar
 
+import firrtl.FileUtils
 
 import scala.sys.process.{ProcessBuilder, ProcessLogger, _}
 
@@ -121,7 +122,7 @@ trait BackendCompilationUtilities {
     // Build a set of canonical file paths to use as a filter to exclude already included additional Verilog sources.
     val blackBoxHelperFiles: Set[String] = {
       if(list_file.exists()) {
-        io.Source.fromFile(list_file).getLines.toSet
+        FileUtils.getLines(list_file).toSet
       }
       else {
         Set.empty
diff --git a/src/test/scala/firrtl/stage/phases/tests/DriverCompatibilitySpec.scala b/src/test/scala/firrtl/stage/phases/tests/DriverCompatibilitySpec.scala
index 77316feb..d06344af 100644
--- a/src/test/scala/firrtl/stage/phases/tests/DriverCompatibilitySpec.scala
+++ b/src/test/scala/firrtl/stage/phases/tests/DriverCompatibilitySpec.scala
@@ -4,8 +4,6 @@ package firrtl.stage.phases.tests
 
 import org.scalatest.{FlatSpec, Matchers, PrivateMethodTester}
 
-import scala.io.Source
-
 import java.io.File
 
 import firrtl._
diff --git a/src/test/scala/firrtlTests/AnnotationTests.scala b/src/test/scala/firrtlTests/AnnotationTests.scala
index 6b492148..7b944470 100644
--- a/src/test/scala/firrtlTests/AnnotationTests.scala
+++ b/src/test/scala/firrtlTests/AnnotationTests.scala
@@ -7,6 +7,7 @@ import java.io.{File, FileWriter, Writer}
 import firrtl.annotations.AnnotationYamlProtocol._
 import firrtl.annotations._
 import firrtl._
+import firrtl.FileUtils
 import firrtl.transforms.OptimizableExtModuleAnnotation
 import firrtl.passes.InlineAnnotation
 import firrtl.passes.memlib.PinAnnotation
@@ -472,8 +473,7 @@ class LegacyAnnotationTests extends AnnotationTests {
     Annotation(ModuleName(mod, CircuitName("Top")), classOf[Transform], "some value")
 
   "LegacyAnnotations" should "be readable from file" in {
-    val annotationStream = getClass.getResourceAsStream("/annotations/SampleAnnotations.anno")
-    val annotationsYaml = scala.io.Source.fromInputStream(annotationStream).getLines().mkString("\n").parseYaml
+    val annotationsYaml = FileUtils.getTextResource("/annotations/SampleAnnotations.anno").parseYaml
     val annotationArray = annotationsYaml.convertTo[Array[LegacyAnnotation]]
     annotationArray.length should be (9)
     annotationArray(0).targetString should be ("ModC")
@@ -538,7 +538,7 @@ class JsonAnnotationTests extends AnnotationTests with BackendCompilationUtiliti
     writer.write(JsonProtocol.serialize(annos))
     writer.close()
 
-    val text = io.Source.fromFile(annoFile).getLines().mkString("\n")
+    val text = FileUtils.getText(annoFile)
     annoFile.delete()
 
     val readAnnos = JsonProtocol.deserializeTry(text).get
diff --git a/src/test/scala/firrtlTests/DriverSpec.scala b/src/test/scala/firrtlTests/DriverSpec.scala
index 1cb991c8..b4f61dfd 100644
--- a/src/test/scala/firrtlTests/DriverSpec.scala
+++ b/src/test/scala/firrtlTests/DriverSpec.scala
@@ -9,10 +9,10 @@ import firrtl.passes.{InlineAnnotation, InlineInstances}
 import firrtl.passes.memlib.{InferReadWrite, InferReadWriteAnnotation, ReplSeqMem, ReplSeqMemAnnotation}
 import firrtl.transforms.BlackBoxTargetDirAnno
 import firrtl._
+import firrtl.FileUtils
 import firrtl.annotations._
 import firrtl.util.BackendCompilationUtilities
 
-import scala.io.Source
 import scala.util.{Failure, Success, Try}
 
 class ExceptingTransform extends Transform {
@@ -307,7 +307,7 @@ class DriverSpec extends FreeSpec with Matchers with BackendCompilationUtilities
     copyResourceToFile(s"/annotations/$annoFilename", annotationsTestFile)
 
     import net.jcazevedo.moultingyaml._
-    val text = io.Source.fromFile(annotationsTestFile).mkString
+    val text = FileUtils.getText(annotationsTestFile)
     val yamlAnnos = text.parseYaml match {
       case YamlArray(xs) => xs
     }
@@ -467,8 +467,8 @@ class DriverSpec extends FreeSpec with Matchers with BackendCompilationUtilities
       Driver.execute(args)
     }
     "Both paths do the same thing" in {
-      val s1 = Source.fromFile(verilogFromFir).mkString
-      val s2 = Source.fromFile(verilogFromPb).mkString
+      val s1 = FileUtils.getText(verilogFromFir)
+      val s2 = FileUtils.getText(verilogFromPb)
       s1 should equal (s2)
     }
   }
diff --git a/src/test/scala/firrtlTests/FirrtlSpec.scala b/src/test/scala/firrtlTests/FirrtlSpec.scala
index c110109c..efbb27de 100644
--- a/src/test/scala/firrtlTests/FirrtlSpec.scala
+++ b/src/test/scala/firrtlTests/FirrtlSpec.scala
@@ -11,7 +11,6 @@ import scala.sys.process._
 import org.scalatest._
 import org.scalatest.prop._
 
-import scala.io.Source
 import firrtl._
 import firrtl.ir._
 import firrtl.Parser.{IgnoreInfo, UseInfo}
diff --git a/src/test/scala/firrtlTests/MultiThreadingSpec.scala b/src/test/scala/firrtlTests/MultiThreadingSpec.scala
index 444faebc..72c66e93 100644
--- a/src/test/scala/firrtlTests/MultiThreadingSpec.scala
+++ b/src/test/scala/firrtlTests/MultiThreadingSpec.scala
@@ -2,10 +2,11 @@
 
 package firrtlTests
 
-import firrtl.{ChirrtlForm, CircuitState, Compiler, annotations}
+import firrtl.FileUtils
+import firrtl.{ChirrtlForm, CircuitState}
 
-import scala.concurrent.{Future, Await, ExecutionContext}
 import scala.concurrent.duration.Duration
+import scala.concurrent.{Await, ExecutionContext, Future}
 
 class MultiThreadingSpec extends FirrtlPropSpec {
 
@@ -27,8 +28,8 @@ class MultiThreadingSpec extends FirrtlPropSpec {
     val numThreads = 64 // arbitrary
 
     // Begin the actual test
-    val inputStream = getClass().getResourceAsStream(inputFilePath)
-    val inputStrings = io.Source.fromInputStream(inputStream).getLines().toList
+
+    val inputStrings = FileUtils.getLinesResource(inputFilePath)
 
     import ExecutionContext.Implicits.global
     try { // Use try-catch because error can manifest in many ways
diff --git a/src/test/scala/firrtlTests/ProtoBufSpec.scala b/src/test/scala/firrtlTests/ProtoBufSpec.scala
index 7a0c3eeb..526a194c 100644
--- a/src/test/scala/firrtlTests/ProtoBufSpec.scala
+++ b/src/test/scala/firrtlTests/ProtoBufSpec.scala
@@ -2,8 +2,6 @@
 
 package firrtlTests
 
-import java.io.{ByteArrayInputStream, ByteArrayOutputStream}
-
 import firrtl.FirrtlProtos.Firrtl
 import firrtl._
 import firrtl.ir._
@@ -30,8 +28,7 @@ class ProtoBufSpec extends FirrtlFlatSpec {
 
   for (FirrtlResourceTest(name, dir) <- firrtlResourceTests) {
     s"$name" should "work with Protobuf serialization and deserialization" in {
-      val stream = getClass.getResourceAsStream(s"$dir/$name.fir")
-      val circuit = parse(scala.io.Source.fromInputStream(stream).getLines.mkString("\n"))
+      val circuit = parse(FileUtils.getTextResource(s"$dir/$name.fir"))
 
       // Test ToProto and FromProto
       val protobuf = proto.ToProto.convert(circuit)
diff --git a/src/test/scala/firrtlTests/ReplSeqMemTests.scala b/src/test/scala/firrtlTests/ReplSeqMemTests.scala
index a1f27958..9a5a2f72 100644
--- a/src/test/scala/firrtlTests/ReplSeqMemTests.scala
+++ b/src/test/scala/firrtlTests/ReplSeqMemTests.scala
@@ -7,6 +7,7 @@ import firrtl.ir._
 import firrtl.passes._
 import firrtl.transforms._
 import firrtl.passes.memlib._
+import firrtl.FileUtils
 import annotations._
 import FirrtlCheckers._
 
@@ -29,8 +30,7 @@ class ReplSeqMemSpec extends SimpleTransformSpec {
 
   def checkMemConf(filename: String, mems: Set[MemConf]) {
     // Read the mem conf
-    val file = scala.io.Source.fromFile(filename)
-    val text = try file.mkString finally file.close()
+    val text = FileUtils.getText(filename)
     // Verify that this does not throw an exception
     val fromConf = MemConf.fromString(text)
     // Verify the mems in the conf are the same as the expected ones
diff --git a/src/test/scala/firrtlTests/stage/FirrtlMainSpec.scala b/src/test/scala/firrtlTests/stage/FirrtlMainSpec.scala
index 0d1120fc..e6129550 100644
--- a/src/test/scala/firrtlTests/stage/FirrtlMainSpec.scala
+++ b/src/test/scala/firrtlTests/stage/FirrtlMainSpec.scala
@@ -6,7 +6,7 @@ import org.scalatest.{FeatureSpec, GivenWhenThen, Matchers}
 
 import java.io.{File, PrintWriter}
 
-import scala.io.Source
+import firrtl.FileUtils
 
 import firrtl.stage.FirrtlMain
 import firrtl.util.BackendCompilationUtilities
@@ -312,7 +312,7 @@ class FirrtlMainSpec extends FeatureSpec with GivenWhenThen with Matchers with f
 
       Then("the implicit annotation file should NOT be read")
       val annoFileOut = new File(td.dir + "/Top.out.anno.json")
-      val annotationJson = Source.fromFile(annoFileOut).mkString
+      val annotationJson = FileUtils.getText(annoFileOut)
       annotationJson should not include ("InlineInstances")
 
       And("no warning should be printed")
diff --git a/src/test/scala/firrtlTests/transforms/BlackBoxSourceHelperSpec.scala b/src/test/scala/firrtlTests/transforms/BlackBoxSourceHelperSpec.scala
index 089e837a..6e63317b 100644
--- a/src/test/scala/firrtlTests/transforms/BlackBoxSourceHelperSpec.scala
+++ b/src/test/scala/firrtlTests/transforms/BlackBoxSourceHelperSpec.scala
@@ -6,6 +6,7 @@ import firrtl.annotations.{Annotation, CircuitName, ModuleName}
 import firrtl.transforms._
 import firrtl.{FIRRTLException, Transform, VerilogCompiler, VerilogEmitter}
 import firrtlTests.{HighTransformSpec, LowTransformSpec}
+import firrtl.FileUtils
 import org.scalacheck.Test.Failed
 import org.scalatest.{FreeSpec, Matchers, Succeeded}
 
@@ -132,9 +133,7 @@ class BlacklBoxSourceHelperTransformSpec extends LowTransformSpec {
     //  but our file list should not include the verilog header file.
     val fileListFile = new java.io.File(s"test_run_dir/${BlackBoxSourceHelper.defaultFileListName}")
     fileListFile.exists should be (true)
-    val fileListFileSource = io.Source.fromFile(fileListFile)
-    val fileList = fileListFileSource.getLines.mkString
-    fileListFileSource.close()
+    val fileList = FileUtils.getText(fileListFile)
     fileList.contains("ParameterizedViaHeaderAdderExtModule.v") should be (true)
     fileList.contains("VerilogHeaderFile.vh") should be (false)
   }
diff --git a/src/test/scala/firrtlTests/transforms/TopWiringTest.scala b/src/test/scala/firrtlTests/transforms/TopWiringTest.scala
index 16dffd66..9dd290f8 100644
--- a/src/test/scala/firrtlTests/transforms/TopWiringTest.scala
+++ b/src/test/scala/firrtlTests/transforms/TopWiringTest.scala
@@ -6,7 +6,6 @@ package transforms
 import org.scalatest.FlatSpec
 import org.scalatest.Matchers
 import org.scalatest.junit.JUnitRunner
-import scala.io.Source
 import java.io._
 
 import firrtl._