aboutsummaryrefslogtreecommitdiff
path: root/examples/new-style-macros-example
diff options
context:
space:
mode:
Diffstat (limited to 'examples/new-style-macros-example')
-rw-r--r--examples/new-style-macros-example/Hello.scala6
-rw-r--r--examples/new-style-macros-example/build/build.scala19
-rw-r--r--examples/new-style-macros-example/macros/Main.scala25
3 files changed, 50 insertions, 0 deletions
diff --git a/examples/new-style-macros-example/Hello.scala b/examples/new-style-macros-example/Hello.scala
new file mode 100644
index 0000000..7e04dcb
--- /dev/null
+++ b/examples/new-style-macros-example/Hello.scala
@@ -0,0 +1,6 @@
+package macroparadise_example
+import macros._
+
+@Main object Hello{
+ println("hello, world!")
+}
diff --git a/examples/new-style-macros-example/build/build.scala b/examples/new-style-macros-example/build/build.scala
new file mode 100644
index 0000000..2054aba
--- /dev/null
+++ b/examples/new-style-macros-example/build/build.scala
@@ -0,0 +1,19 @@
+package macroparadise_example_build
+import cbt._
+
+trait SharedSettings extends NewStyleMacros{
+ override def defaultScalaVersion = "2.12.2"
+}
+
+class Build(val context: Context) extends SharedSettings{
+ override def dependencies =
+ super.dependencies :+
+ new MacroBuild( context.copy( workingDirectory = projectDirectory / "macros" ) )
+}
+
+class MacroBuild(val context: Context) extends SharedSettings{
+ override def dependencies =
+ super.dependencies :+
+ Resolver( mavenCentral ).bindOne( ScalaDependency( "org.scalameta", "scalameta", "1.8.0" ) )
+}
+
diff --git a/examples/new-style-macros-example/macros/Main.scala b/examples/new-style-macros-example/macros/Main.scala
new file mode 100644
index 0000000..ecdce34
--- /dev/null
+++ b/examples/new-style-macros-example/macros/Main.scala
@@ -0,0 +1,25 @@
+package macroparadise_example.macros
+
+import scala.meta._
+import scala.collection.immutable.Seq
+
+class Main extends scala.annotation.StaticAnnotation {
+ inline def apply(defn: Any): Any = meta {
+ defn match {
+ case q"object $name { ..$stats }" =>
+ MainMacroImpl.expand(name, stats)
+ case _ =>
+ abort("@main must annotate an object.")
+ }
+ }
+}
+
+// This is an example how we can refactor the macro implementation into a utility
+// function which can be used for unit testing, see MainUnitTest.
+object MainMacroImpl {
+ def expand(name: Term.Name, stats: Seq[Stat]): Defn.Object = {
+ val main = q"def main(args: Array[String]): Unit = { ..$stats }"
+ q"object $name { $main }"
+ }
+}
+