ochafik

@scalaxy.extension[Any] 
def quoted(quote: String): String = macro {
  // `c` is defined as the macro Context.
  // `quote` and `self` are in scope, defined as `c.Expr[Any]` and `c.Expr[String]`.
  println(s"Currently expanding ${c.prefix}.quoted(${quote.tree})")
  // `c.universe._` is automatically imported, so `reify` is in scope.
  reify({
    // Make sure we're not evaluating quote twice, in case it's a complex expression!
    val q = quote.splice
    q + self.splice + q

ochafik

@scalaxy.extension[Any]
def quoted(quote: String) = quote + self + quote

ochafik

@extend(Any) def quoted(quote: String) = quote + self + quote

ochafik

implicit def Extensions(self: Any) = new Extensions(self)

class Extensions(self: Any) {
  def quoted(quote: String) = quote + self + quote
}
 
println(10.quoted("'")) // prints "'10'"

ochafik

implicit class Extensions(self: Any) {
  def quoted(quote: String) = quote + self + quote
}

println(10.quoted("'")) // prints "'10'"

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// Absolutely need to annotate return type!
@extend(URL) def secure: URL = macro 
  reify(new URL(s"https://${self.splice.getHost}${self.splice.getPath}"))
  
// Gets desugared to:

import scala.language.experimental.macros
import scala.reflect.macros.Context
implicit class secure(self: URL) {
  def secure = macro secureImpl.secureImpl

ochafik

replace(
  {
    // $vparamss($x) are special variables that capture all parameter groups.
    // $vparams($x) would only capture one group
    @extend($type) def $someMethod($vparamss: $) = $body
  },
  {
    implicit class $someMethod(self: $type) extends AnyRef { 
      def $someMethod($vparamss: $) = $body 
      // $fresh$x is a special variable that picks a fresh name with fresh("x")

ochafik

// Author: Olivier Chafik (http://ochafik.com)
// Feel free to modify and reuse this for any purpose ("public domain / I don't care").
package scalaxy.pretyping.example

import scala.reflect.internal._
import scala.tools.nsc.CompilerCommand
import scala.tools.nsc.Global
import scala.tools.nsc.Phase
import scala.tools.nsc.plugins.Plugin
import scala.tools.nsc.plugins.PluginComponent

ochafik

assert x.getSize() == 2 : "Size of x is not 2"; // Java assert

ochafik

// Only works with 2.10.0+
scalaVersion := "2.10.0"

// Dependency at compilation-time only (not at runtime).
libraryDependencies += "com.nativelibs4java" %% "scalaxy-debug" % "0.3-SNAPSHOT" % "provided"

// Scalaxy/Debug snapshots are published on the Sonatype repository.
resolvers += Resolver.sonatypeRepo("snapshots")