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package test.transform
import org.junit.{Assert, Test}
import test.DottyTest
import dotty.tools.dotc.core._
import dotty.tools.dotc.ast.{tpd, Trees}
import Contexts._
import Flags._
import Denotations._
import NameOps._
import Symbols._
import Types._
import Decorators._
import Trees._
import dotty.tools.dotc.transform.TreeTransforms.{TreeTransform, TreeTransformer}
import dotty.tools.dotc.transform.PostTyperTransformers.PostTyperTransformer
import dotty.tools.dotc.transform.CreateCompanionObjects
class CreateCompanionObjectsTest extends DottyTest {
import tpd._
@Test
def shouldCreateNonExistingObjectsInPackage = checkCompile("frontend", "class A{} ") {
(tree, context) =>
implicit val ctx = context
val transformer = new PostTyperTransformer {
override def transformations = Array(new CreateCompanionObjects {
override def name: String = "create all companion objects"
override def predicate(cts: TypeDef)(implicit ctx:Context): Boolean = true
})
override def name: String = "test"
}
val transformed = transformer.transform(tree).toString
val classPattern = "TypeDef(Modifiers(,,List()),A,"
val classPos = transformed.indexOf(classPattern)
val moduleClassPattern = "TypeDef(Modifiers(final module <synthetic>,,List()),A$"
val modulePos = transformed.indexOf(moduleClassPattern)
Assert.assertTrue("should create non-existing objects in package",
classPos < modulePos
)
}
@Test
def shouldCreateNonExistingObjectsInBlock = checkCompile("frontend", "class D {def p = {class A{}; 1}} ") {
(tree, context) =>
implicit val ctx = context
val transformer = new PostTyperTransformer {
override def transformations = Array(new CreateCompanionObjects {
override def name: String = "create all companion modules"
override def predicate(cts: TypeDef)(implicit ctx:Context): Boolean = true
})
override def name: String = "test"
}
val transformed = transformer.transform(tree).toString
val classPattern = "TypeDef(Modifiers(,,List()),A,"
val classPos = transformed.indexOf(classPattern)
val moduleClassPattern = "TypeDef(Modifiers(final module <synthetic>,,List()),A$"
val modulePos = transformed.indexOf(moduleClassPattern)
Assert.assertTrue("should create non-existing objects in block",
classPos < modulePos
)
}
@Test
def shouldCreateNonExistingObjectsInTemplate = checkCompile("frontend", "class D {class A{}; } ") {
(tree, context) =>
implicit val ctx = context
val transformer = new PostTyperTransformer {
override def transformations = Array(new CreateCompanionObjects {
override def name: String = "create all companion modules"
override def predicate(cts: TypeDef)(implicit ctx:Context): Boolean = true
})
override def name: String = "test"
}
val transformed = transformer.transform(tree).toString
val classPattern = "TypeDef(Modifiers(,,List()),A,"
val classPos = transformed.indexOf(classPattern)
val moduleClassPattern = "TypeDef(Modifiers(final module <synthetic>,,List()),A$"
val modulePos = transformed.indexOf(moduleClassPattern)
Assert.assertTrue("should create non-existing objects in template",
classPos < modulePos
)
}
@Test
def shouldCreateOnlyIfAskedFor = checkCompile("frontend", "class DONT {class CREATE{}; } ") {
(tree, context) =>
implicit val ctx = context
val transformer = new PostTyperTransformer {
override def transformations = Array(new CreateCompanionObjects {
override def name: String = "create all companion modules"
override def predicate(cts: TypeDef)(implicit ctx:Context): Boolean = cts.name.toString.contains("CREATE")
})
override def name: String = "test"
}
val transformed = transformer.transform(tree).toString
val classPattern = "TypeDef(Modifiers(,,List()),A,"
val classPos = transformed.indexOf(classPattern)
val moduleClassPattern = "TypeDef(Modifiers(final module <synthetic>,,List()),CREATE$"
val modulePos = transformed.indexOf(moduleClassPattern)
val notCreatedModulePattern = "TypeDef(Modifiers(final module <synthetic>,,List()),DONT"
val notCreatedPos = transformed.indexOf(notCreatedModulePattern)
Assert.assertTrue("should create non-existing objects in template",
classPos < modulePos && (notCreatedPos < 0)
)
}
}
|
