refactored the kdoc implementation to introduce a Doclet trait so its easy to plugin new documentation generators or use different templates etc

kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/Doclet.kt

@@ -0,0 +1,12 @@
+package org.jetbrains.kotlin.doc
+
+import org.jetbrains.kotlin.model.KModel
+import java.io.File
+
+/**
+ * A simple plugin to KDoc to generate information from the model into a directory
+ * which can be implemented using any kind of layout or format.
+ */
+trait Doclet {
+    fun generate(model: KModel, outputDir: File): Unit
+}

kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/JavadocStyleHtmlDoclet.kt

@@ -31,9 +31,30 @@ import org.jetbrains.jet.lang.resolve.scopes.receivers.ExtensionReceiver
 import org.jetbrains.jet.util.slicedmap.WritableSlice
 import org.jetbrains.jet.lang.resolve.BindingContextUtils
 
-class KDocGenerator(val model: KModel, val outputDir: File) {
+/** Creates JavaDoc style HTML output from the model */
+class JavadocStyleHtmlDoclet() : Doclet {
+
+    override fun generate(model: KModel, outputDir: File): Unit {
+        fun run(fileName: String, template: TextTemplate): Unit {
+            val file = File(outputDir, fileName)
+            file.getParentFile()?.mkdirs()
+
+            log("Generating $fileName")
+            template.renderTo(file)
+        }
+
+        fun generateExtensionFunctions(p: KPackage): Unit {
+            val map = inheritedExtensionFunctions(p.functions)
+            for (e in map.entrySet()) {
+                val c = e?.getKey()
+                val functions = e?.getValue()
+                if (c != null && functions != null) {
+                    run("${p.nameAsPath}/${c.simpleName}-extensions.html", ClassExtensionsTemplate(model, p, c, functions))
+                }
+            }
+        }
+
 
-    fun execute(): Unit {
         println("Generating kdoc to $outputDir")
         run("allclasses-frame.html", AllClassesFrameTemplate(model, " target=\"classFrame\""))
         run("allclasses-noframe.html", AllClassesFrameTemplate(model))
@@ -60,27 +81,9 @@ class KDocGenerator(val model: KModel, val outputDir: File) {
         }
     }
 
-    protected fun run(fileName: String, template: TextTemplate): Unit {
-        val file = File(outputDir, fileName)
-        file.getParentFile()?.mkdirs()
-
-        log("Generating $fileName")
-        template.renderTo(file)
-    }
-
     protected fun log(text: String) {
         println(text)
     }
 
-    protected fun generateExtensionFunctions(p: KPackage): Unit {
-        val map = inheritedExtensionFunctions(p.functions)
-        for (e in map.entrySet()) {
-            val c = e?.getKey()
-            val functions = e?.getValue()
-            if (c != null && functions != null) {
-                run("${p.nameAsPath}/${c.simpleName}-extensions.html", ClassExtensionsTemplate(model, p, c, functions))
-            }
-        }
-    }
 
 }

kdoc/src/main/kotlin/org/jetbrains/kotlin/doc/KDoc.kt

@@ -35,7 +35,9 @@ import org.jetbrains.jet.lang.resolve.BindingContextUtils
 class KDoc(val outputDir: File) : KModelCompilerPlugin() {
 
     override fun processModel(model: KModel) {
-        val generator = KDocGenerator(model, outputDir)
-        generator.execute()
+        // TODO allow this to be configured; maybe we use configuration on the KotlinModule
+        // to define what doclets to use?
+        val generator = JavadocStyleHtmlDoclet()
+        generator.generate(model, outputDir)
     }
 }

kdoc/src/main/kotlin/org/jetbrains/kotlin/model/KotlinModel.kt

@@ -146,7 +146,6 @@ class KModel(var context: BindingContext, var title: String = "Documentation", v
                 if (descriptor is PropertyDescriptor) {
                     if (owner is KClass) {
                         val name = descriptor.getName()
-                        println("Found Property on owner: $owner with name: $name")
                         val returnType = getClass(descriptor.getReturnType())
                         if (returnType != null) {
                             val property = KProperty(owner, descriptor, name, returnType)