Move ExtraColumns enum to correct package.

Author: nikitinas

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/cast.kt

@@ -14,13 +14,12 @@ import org.jetbrains.kotlinx.dataframe.columns.ColumnWithPath
 import org.jetbrains.kotlinx.dataframe.columns.FrameColumn
 import org.jetbrains.kotlinx.dataframe.columns.SingleColumn
 import org.jetbrains.kotlinx.dataframe.columns.ValueColumn
-import org.jetbrains.kotlinx.dataframe.impl.api.ExtraColumns
 import org.jetbrains.kotlinx.dataframe.impl.api.convertToImpl
 import kotlin.reflect.typeOf
 
 public fun <T> AnyFrame.cast(): DataFrame<T> = this as DataFrame<T>
 
-public inline fun <reified T> AnyFrame.cast(verify: Boolean = true): DataFrame<T> = if (verify) convertToImpl(typeOf<T>(), allowConversion = false, org.jetbrains.kotlinx.dataframe.impl.api.ExtraColumns.Keep)
+public inline fun <reified T> AnyFrame.cast(verify: Boolean = true): DataFrame<T> = if (verify) convertToImpl(typeOf<T>(), allowConversion = false, ExtraColumns.Keep)
 else cast()
 
 public fun <T> AnyRow.cast(): DataRow<T> = this as DataRow<T>

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/convertTo.kt

@@ -2,10 +2,11 @@ package org.jetbrains.kotlinx.dataframe.api
 
 import org.jetbrains.kotlinx.dataframe.AnyFrame
 import org.jetbrains.kotlinx.dataframe.DataFrame
-import org.jetbrains.kotlinx.dataframe.impl.api.ExtraColumns
 import org.jetbrains.kotlinx.dataframe.impl.api.convertToImpl
 import kotlin.reflect.typeOf
 
+public enum class ExtraColumns { Remove, Keep, Fail }
+
 // region DataFrame
 
 public inline fun <reified T> AnyFrame.convertTo(extraColumnsBehavior: ExtraColumns = ExtraColumns.Keep): DataFrame<T> = convertToImpl(typeOf<T>(), true, extraColumnsBehavior)

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/api/convertTo.kt

@@ -3,6 +3,7 @@ package org.jetbrains.kotlinx.dataframe.impl.api
 import org.jetbrains.kotlinx.dataframe.AnyFrame
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.DataFrame
+import org.jetbrains.kotlinx.dataframe.api.ExtraColumns
 import org.jetbrains.kotlinx.dataframe.api.asColumnGroup
 import org.jetbrains.kotlinx.dataframe.api.cast
 import org.jetbrains.kotlinx.dataframe.api.convertTo
@@ -20,8 +21,6 @@ import org.jetbrains.kotlinx.dataframe.schema.DataFrameSchema
 import kotlin.reflect.KType
 import kotlin.reflect.jvm.jvmErasure
 
-public enum class ExtraColumns { Remove, Keep, Fail }
-
 @PublishedApi
 internal fun <T> AnyFrame.convertToImpl(type: KType, allowConversion: Boolean, extraColumns: ExtraColumns): DataFrame<T> {
     fun AnyFrame.convertToSchema(schema: DataFrameSchema): AnyFrame {

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt

@@ -12,6 +12,7 @@ import org.jetbrains.kotlinx.dataframe.DataRow
 import org.jetbrains.kotlinx.dataframe.RowExpression
 import org.jetbrains.kotlinx.dataframe.annotations.ColumnName
 import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
+import org.jetbrains.kotlinx.dataframe.api.ExtraColumns
 import org.jetbrains.kotlinx.dataframe.api.GroupBy
 import org.jetbrains.kotlinx.dataframe.api.ParserOptions
 import org.jetbrains.kotlinx.dataframe.api.add
@@ -159,7 +160,6 @@ import org.jetbrains.kotlinx.dataframe.columns.ColumnKind
 import org.jetbrains.kotlinx.dataframe.columns.UnresolvedColumnsPolicy
 import org.jetbrains.kotlinx.dataframe.hasNulls
 import org.jetbrains.kotlinx.dataframe.impl.DataFrameSize
-import org.jetbrains.kotlinx.dataframe.impl.api.ExtraColumns
 import org.jetbrains.kotlinx.dataframe.impl.api.convertToImpl
 import org.jetbrains.kotlinx.dataframe.impl.between
 import org.jetbrains.kotlinx.dataframe.impl.columns.isMissingColumn