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Add string interpolator apply macro prototype #8572

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Merged
merged 1 commit into from
Mar 20, 2020
Merged

Add string interpolator apply macro prototype #8572

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34 changes: 34 additions & 0 deletions tests/run-macros/xml-interpolation-5/Macros_1.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
import scala.quoted._
import scala.quoted.autolift

import scala.language.implicitConversions

case class Xml(parts: String, args: List[Any])

object XmlQuote {

// Encoding for
//
// implicit class SCOps(s: StringContext) {
// object xml {
// def apply(exprs: Any*) = ...
// def unapplySeq(...) = ...
// }
// }
object SCOps {
opaque type StringContext = scala.StringContext
def apply(sc: scala.StringContext): StringContext = sc
}
inline def (inline ctx: StringContext).xml <: SCOps.StringContext = SCOps(ctx)
inline def (inline ctx: SCOps.StringContext).apply(inline args: Any*): Xml =
${XmlQuote.impl('ctx, 'args)}
// inline def (inline ctx: SCOps.StringContext).unapplySeq(...): Xml = ...


def impl(receiver: Expr[SCOps.StringContext], args: Expr[Seq[Any]])(using QuoteContext): Expr[Xml] = {
val string = receiver match {
case '{ SCOps(${Unlifted(sc)}) } => sc.parts.mkString("??")
}
'{new Xml(${string}, $args.toList)}
}
}
11 changes: 11 additions & 0 deletions tests/run-macros/xml-interpolation-5/Test_2.scala
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import XmlQuote._

object Test {
def main(args: Array[String]): Unit = {

assert(xml"Hello World!" == Xml("Hello World!", Nil))

val name = new Object{}
assert(xml"Hello $name!" == Xml("Hello ??!", List(name)))
}
}
34 changes: 34 additions & 0 deletions tests/run-macros/xml-interpolation-6/Macros_1.scala
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Original file line number Diff line number Diff line change
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import scala.quoted._
import scala.quoted.autolift

import scala.language.implicitConversions

case class Xml(parts: String, args: List[Any])

object XmlQuote {

// Encoding for
//
// implicit class SCOps(s: StringContext) {
// object xml {
// def apply(exprs: Any*) = ...
// def unapplySeq(...) = ...
// }
// }
object SCOps {
opaque type StringContext = scala.StringContext
def apply(sc: scala.StringContext): StringContext = sc
}
inline def (inline ctx: StringContext).xml: SCOps.StringContext = SCOps(ctx)
inline def (inline ctx: SCOps.StringContext).apply(inline args: Any*): Xml =
${XmlQuote.impl('ctx, 'args)}
// inline def (inline ctx: SCOps.StringContext).unapplySeq(...): Xml = ...


def impl(receiver: Expr[SCOps.StringContext], args: Expr[Seq[Any]])(using QuoteContext): Expr[Xml] = {
val string = receiver match {
case '{ SCOps(${Unlifted(sc)}): SCOps.StringContext } => sc.parts.mkString("??")
}
'{new Xml(${string}, $args.toList)}
}
}
11 changes: 11 additions & 0 deletions tests/run-macros/xml-interpolation-6/Test_2.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
import XmlQuote._

object Test {
def main(args: Array[String]): Unit = {

assert(xml"Hello World!" == Xml("Hello World!", Nil))

val name = new Object{}
assert(xml"Hello $name!" == Xml("Hello ??!", List(name)))
}
}
34 changes: 34 additions & 0 deletions tests/run-macros/xml-interpolation-7/Macros_1.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
import scala.quoted._
import scala.quoted.autolift

import scala.language.implicitConversions

case class Xml(parts: String, args: List[Any])

object XmlQuote {

// Encoding for
//
// implicit class SCOps(s: StringContext) {
// object xml {
// def apply(exprs: Any*) = ...
// def unapplySeq(...) = ...
// }
// }
object XMLOps {
opaque type StringContext = scala.StringContext
def (ctx: scala.StringContext).xml: StringContext = ctx
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@liufengyun I added this other alternative that looks much simpler to use. Could you quickly check it and merge if it is ok.

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LGTM

}

inline def (inline ctx: XMLOps.StringContext).apply(inline args: Any*): Xml =
${XmlQuote.impl('ctx, 'args)}
// inline def (inline ctx: SCOps.StringContext).unapplySeq(...): Xml = ...


def impl(receiver: Expr[XMLOps.StringContext], args: Expr[Seq[Any]])(using QuoteContext): Expr[Xml] = {
val string = receiver match {
case '{ XMLOps.xml(${Unlifted(sc)}) } => sc.parts.mkString("??")
}
'{new Xml(${string}, $args.toList)}
}
}
12 changes: 12 additions & 0 deletions tests/run-macros/xml-interpolation-7/Test_2.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
import XmlQuote._

object Test {
def main(args: Array[String]): Unit = {
import XMLOps.xml

assert(xml"Hello World!" == Xml("Hello World!", Nil))

val name = new Object{}
assert(xml"Hello $name!" == Xml("Hello ??!", List(name)))
}
}