update to 1.6.0 for release

CONTRIBUTING.md

@@ -36,6 +36,7 @@ The form of the test itself is flexible as long as the logic is being covered.
 Here are some [sample test processors](compiler-plugin/src/test/kotlin/com/google/devtools/ksp/processor) for your reference.
 
 #### Steps for writing a test
+* KSP needs to be built with JDK 11+, because of some test dependencies.
 * Create a test processor under the sample processor folder.
 it should be extending [AbstractTestProcessor](compiler-plugin/src/test/kotlin/com/google/devtools/ksp/processor/AbstractTestProcessor.kt)
 * Write your logic by overriding corresponding functions. 

compiler-plugin/src/test/java/com/google/devtools/ksp/test/KotlinKSPTestGenerated.java

@@ -381,7 +381,7 @@ public KspTestFile createFile(@Nullable TestModule module, @NotNull String fileN
             }
 
             @Override
-            public TestModule createModule(@NotNull String name, @NotNull List<String> dependencies, @NotNull List<String> friends) {
+            public TestModule createModule(@NotNull String name, @NotNull List<String> dependencies, @NotNull List<String> friends, @NotNull List<Integer> abiVersions) {
                 return new TestModule(name, dependencies, friends);
             }
         });

compiler-plugin/testData/api/allFunctions.kt

@@ -62,6 +62,7 @@
 // spliterator(): java.util.Spliterator
 // stream(): java.util.stream.Stream
 // subList(kotlin.Int,kotlin.Int): kotlin.collections.List
+// toArray(java.util.function.IntFunction): kotlin.Array
 // toString(): kotlin.String
 // class: JavaImplOfKotlinInterface
 // x
@@ -128,4 +129,4 @@ class JavaImplOfKotlinInterface implements KotlinInterfaceWithProperty {
     }
     public void setX(int value) {
     }
-}
+}

gradle-plugin/src/main/kotlin/com/google/devtools/ksp/gradle/KspSubplugin.kt

@@ -41,6 +41,7 @@ import org.gradle.language.jvm.tasks.ProcessResources
 import org.gradle.tooling.provider.model.ToolingModelBuilderRegistry
 import org.gradle.util.GradleVersion
 import org.gradle.util.internal.VersionNumber
+import org.gradle.work.Incremental
 import org.jetbrains.kotlin.cli.common.arguments.*
 import org.jetbrains.kotlin.gradle.dsl.*
 import org.jetbrains.kotlin.gradle.internal.CompilerArgumentsContributor
@@ -414,6 +415,7 @@ abstract class KspTaskJvm : KotlinCompile(KotlinJvmOptionsImpl()), KspTask {
     @get:PathSensitive(PathSensitivity.NONE)
     @get:Optional
     @get:InputFiles
+    @get:Incremental
     abstract val classpathStructure: ConfigurableFileCollection
 
     @get:Input
@@ -449,9 +451,9 @@ abstract class KspTaskJvm : KotlinCompile(KotlinJvmOptionsImpl()), KspTask {
                     viewConfig.attributes.attribute(artifactType, CLASS_STRUCTURE_ARTIFACT_TYPE)
                 }.files
             ).disallowChanges()
-            useClasspathSnapshot.value(true).disallowChanges()
+            classpathSnapshotProperties.useClasspathSnapshot.value(true).disallowChanges()
         } else {
-            useClasspathSnapshot.value(false).disallowChanges()
+            classpathSnapshotProperties.useClasspathSnapshot.value(false).disallowChanges()
         }
     }
 

gradle.properties

@@ -1,9 +1,9 @@
 # Copied from kotlinc
 org.gradle.jvmargs=-Duser.country=US -Dkotlin.daemon.jvm.options=-Xmx2200m -Dfile.encoding=UTF-8
 
-kotlinBaseVersion=1.5.31
+kotlinBaseVersion=1.6.0
 agpBaseVersion=7.0.0
-intellijVersion=202.7660.26
+intellijVersion=203.8084.24
 junitVersion=4.12
 googleTruthVersion=1.1
 compilerTestEnabled=false