Automated commit of generated code

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/ColumnsContainer.kt

@@ -18,9 +18,9 @@ import kotlin.reflect.KProperty
  *
  * Base interface for [DataFrame] and [ColumnSelectionDsl]
  *
- * @param T Schema marker. Used to generate extension properties for typed column access.
+ * @param T Schema marker. Used to resolve generated extension properties for typed column access.
  */
-public interface ColumnsContainer<out T> {
+public interface ColumnsContainer<out T> : ColumnsScope<T> {
 
     // region columns
 
@@ -54,7 +54,7 @@ public interface ColumnsContainer<out T> {
 
     // region get
 
-    public operator fun get(columnName: String): AnyCol = getColumn(columnName)
+    public override operator fun get(columnName: String): AnyCol = getColumn(columnName)
 
     public operator fun get(columnPath: ColumnPath): AnyCol = getColumn(columnPath)
 

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/ColumnsScope.kt

@@ -0,0 +1,12 @@
+package org.jetbrains.kotlinx.dataframe
+
+/**
+ * Provides minimal API required for generated column properties:
+ *
+ * `val ColumnsScope<Schema marker>.column: DataColumn<String> get() = this["column"] as DataColumn<String>`
+ *
+ * @param T Schema marker. Used to resolve generated extension properties for typed column access.
+ */
+public interface ColumnsScope<out T> {
+    public operator fun get(columnName: String): AnyCol
+}

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/DataFrameGet.kt

@@ -4,6 +4,7 @@ import org.jetbrains.kotlinx.dataframe.AnyCol
 import org.jetbrains.kotlinx.dataframe.AnyColumnReference
 import org.jetbrains.kotlinx.dataframe.ColumnSelector
 import org.jetbrains.kotlinx.dataframe.ColumnsContainer
+import org.jetbrains.kotlinx.dataframe.ColumnsScope
 import org.jetbrains.kotlinx.dataframe.ColumnsSelector
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.DataFrame
@@ -58,6 +59,28 @@ public fun <T> ColumnsContainer<T>.getFrameColumn(columnName: String): FrameColu
 public fun <T> ColumnsContainer<T>.getColumnGroup(columnPath: ColumnPath): ColumnGroup<*> =
     get(columnPath).asColumnGroup()
 
+/**
+ * Utility property to access scope with only dataframe column properties for code completion,
+ * filtering out DataFrame API.
+ *
+ * It's a quick way to check that code generation in notebooks or compiler plugin
+ * worked as expected or find columns you're interested in.
+ *
+ * In notebooks:
+ * ```
+ * val df = DataFrame.read("file.csv")
+ * ==== next code cell
+ * df. // column properties are mixed together with methods, not easy to find unless you already know names
+ * df.properties(). // easy to overview available columns
+ * ```
+ * In compiler plugin:
+ * ```
+ * val df = @Import DataFrame.read("file.csv")
+ * df.properties().
+ * ```
+ */
+public fun <T> DataFrame<T>.properties(): ColumnsScope<T> = this
+
 // region getColumn
 
 public fun <T> ColumnsContainer<T>.getColumn(name: String): AnyCol =

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/codeGen/CodeGeneratorImpl.kt

@@ -12,6 +12,7 @@ import org.jetbrains.dataframe.impl.codeGen.InterfaceGenerationMode.WithFields
 import org.jetbrains.dataframe.keywords.HardKeywords
 import org.jetbrains.dataframe.keywords.ModifierKeywords
 import org.jetbrains.kotlinx.dataframe.ColumnsContainer
+import org.jetbrains.kotlinx.dataframe.ColumnsScope
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.DataFrame
 import org.jetbrains.kotlinx.dataframe.DataRow
@@ -166,7 +167,7 @@ internal object FullyQualifiedNames : TypeRenderingStrategy {
 internal object ShortNames : TypeRenderingStrategy {
 
     private val dataRow = DataRow::class.simpleName!!
-    private val columnsContainer = ColumnsContainer::class.simpleName!!
+    private val columnsContainer = ColumnsScope::class.simpleName!!
     private val dataFrame = DataFrame::class.simpleName!!
     private val dataColumn = DataColumn::class.simpleName!!
     private val columnGroup = ColumnGroup::class.simpleName!!
@@ -565,7 +566,7 @@ public fun Code.toStandaloneSnippet(packageName: String, additionalImports: List
             appendLine("package $packageName")
             appendLine()
         }
-        appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsContainer")
+        appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsScope")
         appendLine("import org.jetbrains.kotlinx.dataframe.DataColumn")
         appendLine("import org.jetbrains.kotlinx.dataframe.DataFrame")
         appendLine("import org.jetbrains.kotlinx.dataframe.DataRow")

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/io/html.kt

@@ -518,7 +518,11 @@ internal fun DataFrameHtmlData.print() = println(this)
 /**
  * By default, cell content is formatted as text
  * Use [RenderedContent.media] or [IMG], [IFRAME] if you need custom HTML inside a cell.
- * @return DataFrameHtmlData with table script and css definitions. Can be saved as an *.html file and displayed in the browser
+ *
+ * The [DataFrameHtmlData] be saved as an *.html file and displayed in the browser.
+ * If you save it as a file and find it in the project tree,
+ * the ["Open in browser"](https://www.jetbrains.com/help/idea/editing-html-files.html#ws_html_preview_output_procedure) feature of IntelliJ IDEA will automatically reload the file content when it's updated
+ * @return DataFrameHtmlData with table script and css definitions
  */
 public fun <T> DataFrame<T>.toStandaloneHTML(
     configuration: DisplayConfiguration = DisplayConfiguration.DEFAULT,
@@ -620,10 +624,18 @@ public data class DataFrameHtmlData(
         destination.writeText(toString())
     }
 
+    public fun writeHTML(destination: String) {
+        File(destination).writeText(toString())
+    }
+
     public fun writeHTML(destination: Path) {
         destination.writeText(toString())
     }
 
+    /**
+     * Opens a new tab in your default browser.
+     * Consider [writeHTML] with the [HTML file auto-reload](https://www.jetbrains.com/help/idea/editing-html-files.html#ws_html_preview_output_procedure) feature of IntelliJ IDEA if you want to experiment with the output and run program multiple times
+     */
     public fun openInBrowser() {
         val file = File.createTempFile("df_rendering", ".html")
         writeHTML(file)

core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/codeGen/CodeGenerationTests.kt

@@ -6,7 +6,7 @@ import org.jetbrains.dataframe.impl.codeGen.InterfaceGenerationMode
 import org.jetbrains.dataframe.impl.codeGen.ReplCodeGenerator
 import org.jetbrains.dataframe.impl.codeGen.generate
 import org.jetbrains.kotlinx.dataframe.AnyRow
-import org.jetbrains.kotlinx.dataframe.ColumnsContainer
+import org.jetbrains.kotlinx.dataframe.ColumnsScope
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.DataRow
 import org.jetbrains.kotlinx.dataframe.api.dataFrameOf
@@ -30,7 +30,7 @@ class CodeGenerationTests : BaseTest() {
 
     val personShortName = Person::class.simpleName!!
 
-    val dfName = (ColumnsContainer::class).simpleName!!
+    val dfName = (ColumnsScope::class).simpleName!!
     val dfRowName = (DataRow::class).simpleName!!
     val dataCol = (DataColumn::class).simpleName!!
     val dataRow = (DataRow::class).simpleName!!

core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/codeGen/ReplCodeGenTests.kt

@@ -4,7 +4,7 @@ import io.kotest.matchers.shouldBe
 import io.kotest.matchers.string.shouldNotBeEmpty
 import org.jetbrains.dataframe.impl.codeGen.ReplCodeGenerator
 import org.jetbrains.dataframe.impl.codeGen.process
-import org.jetbrains.kotlinx.dataframe.ColumnsContainer
+import org.jetbrains.kotlinx.dataframe.ColumnsScope
 import org.jetbrains.kotlinx.dataframe.DataColumn
 import org.jetbrains.kotlinx.dataframe.DataRow
 import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
@@ -20,7 +20,7 @@ import org.junit.Test
 @Suppress("ktlint:standard:class-naming")
 class ReplCodeGenTests : BaseTest() {
 
-    val dfName = (ColumnsContainer::class).simpleName!!
+    val dfName = (ColumnsScope::class).simpleName!!
     val dfRowName = (DataRow::class).simpleName!!
     val dataCol = (DataColumn::class).simpleName!!
     val intName = Int::class.simpleName!!
@@ -192,7 +192,7 @@ class ReplCodeGenTests : BaseTest() {
         repl.process<Test3.B>()
         repl.process<Test3.D>()
         val c = repl.process(Test3.df, Test3::df)
-        """val .*ColumnsContainer<\w*>.x:""".toRegex().findAll(c.declarations).count() shouldBe 1
+        """val .*ColumnsScope<\w*>.x:""".toRegex().findAll(c.declarations).count() shouldBe 1
     }
 
     object Test4 {
@@ -216,6 +216,6 @@ class ReplCodeGenTests : BaseTest() {
         repl.process<Test4.A>()
         repl.process<Test4.B>()
         val c = repl.process(Test4.df, Test4::df)
-        """val .*ColumnsContainer<\w*>.a:""".toRegex().findAll(c.declarations).count() shouldBe 1
+        """val .*ColumnsScope<\w*>.a:""".toRegex().findAll(c.declarations).count() shouldBe 1
     }
 }