2018-07-27 10:18:29 -04:00
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import sbt._
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object CompilerOptions {
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lazy val scalac_2_12_Options = Seq(
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"-deprecation", // Emit warning and location for usages of deprecated APIs.
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"-encoding", "utf-8", // Specify character encoding used by source files.
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"-explaintypes", // Explain type errors in more detail.
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"-feature", // Emit warning for usages of features that should be imported explicitly.
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"-language:higherKinds", // Allow higher-kinded types
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"-unchecked", // Enable additional warnings where generated code depends on assumptions.
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"-Xlint:infer-any", // Warn when a type argument is inferred to be `Any`.
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"-Xlint:missing-interpolator", // A string literal appears to be missing an interpolator id.
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"-Xlint:nullary-override", // Warn when non-nullary `def f()' overrides nullary `def f'.
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"-Xlint:nullary-unit", // Warn when nullary methods return Unit.
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"-Xlint:private-shadow", // A private field (or class parameter) shadows a superclass field
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"-Xlint:type-parameter-shadow", // A local type parameter shadows a type already in scope.
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"-Xlint:unsound-match", // Pattern match may not be typesafe.
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2018-08-10 18:09:35 -05:00
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"-Xfatal-warnings", // Enable failure of compilation when warnings exist.
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2018-07-27 10:18:29 -04:00
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"-Ypartial-unification", // Enable partial unification in type constructor inference
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"-Ywarn-dead-code", // Warn when dead code is identified.
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"-Ywarn-extra-implicit", // Warn when more than one implicit parameter section is defined.
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"-Ywarn-inaccessible", // Warn about inaccessible types in method signatures.
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"-Ywarn-infer-any", // Warn when a type argument is inferred to be `Any`.
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"-Ywarn-unused:implicits", // Warn if an implicit parameter is unused.
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"-Ywarn-unused:imports", // Warn if an import selector is not referenced.
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"-Ywarn-unused:locals", // Warn if a local definition is unused.
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"-Ywarn-unused:params", // Warn if a value parameter is unused.
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"-Ywarn-unused:patvars", // Warn if a variable bound in a pattern is unused.
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"-Ywarn-unused:privates" // Warn if a private member is unused.
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)
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def scalacOptionsByV(scalaVersion: String): Seq[String] = {
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val VersionNumber((major +: minor +: _ +: _), _, _) = scalaVersion
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(major, minor) match {
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case (2, minV) if minV > 11 ⇒ scalac_2_12_Options
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case _ ⇒ sys.error(s"scala version $scalaVersion is not supported.")
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}
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}
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}
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