izumi.fundamentals.platform.build.MacroParametersImpl.scala Maven / Gradle / Ivy
package izumi.fundamentals.platform.build
import izumi.fundamentals.reflection.ReflectiveCall
import scala.annotation.experimental
import scala.quoted.{Expr, Quotes, Type}
@experimental
object MacroParametersImpl {
def extractString(name: Expr[String])(using quotes: Quotes): Expr[Option[String]] = {
Expr(extract(name.valueOrAbort))
}
def extractBool(name: Expr[String])(using quotes: Quotes): Expr[Option[Boolean]] = {
val value = extract(name.valueOrAbort)
val isTrue = value.map(_.toLowerCase).map(v => v == "true" || v == "1")
Expr(isTrue)
}
private def extract(name: String)(using quotes: Quotes): Option[String] = {
import quotes.reflect.*
val prefix = s"$name="
val value = CompilationInfo.XmacroSettings.filter(_.startsWith(prefix)).map(_.stripPrefix(prefix)).lastOption
if (value.isEmpty) {
report.info(s"Undefined macro parameter $name, add `-Xmacro-settings:$prefix` into `scalac` options")
}
value
}
}