show default values of parameters in generated documentation

2 files changed, 16 insertions, 0 deletions

diff --git a/src/Kotlin/DocumentationBuilder.kt b/src/Kotlin/DocumentationBuilder.kt
index 0b978370..5af4c9f1 100644
--- a/src/Kotlin/DocumentationBuilder.kt
+++ b/src/Kotlin/DocumentationBuilder.kt
@@ -12,6 +12,8 @@ import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
 import org.jetbrains.kotlin.resolve.constants.CompileTimeConstant
 import com.intellij.openapi.util.text.StringUtil
 import org.jetbrains.kotlin.descriptors.impl.EnumEntrySyntheticClassDescriptor
+import org.jetbrains.kotlin.resolve.source.getPsi
+import org.jetbrains.kotlin.psi.JetParameter
 
 public data class DocumentationOptions(val includeNonPublic: Boolean = false)
 
@@ -307,6 +309,15 @@ class DocumentationBuilder(val session: ResolveSession, val options: Documentati
         } else {
             node.appendType(getType())
         }
+        if (hasDefaultValue()) {
+            val psi = getSource().getPsi() as? JetParameter
+            if (psi != null) {
+                val defaultValueText = psi.getDefaultValue()?.getText()
+                if (defaultValueText != null) {
+                    node.append(DocumentationNode(defaultValueText, Content.Empty, Kind.Value), DocumentationReference.Kind.Detail)
+                }
+            }
+        }
         node.appendAnnotations(this)
         register(this, node)
         return node
diff --git a/src/Kotlin/KotlinLanguageService.kt b/src/Kotlin/KotlinLanguageService.kt
index 8795aba6..3e9192c4 100644
--- a/src/Kotlin/KotlinLanguageService.kt
+++ b/src/Kotlin/KotlinLanguageService.kt
@@ -133,6 +133,11 @@ class KotlinLanguageService : LanguageService {
         symbol(": ")
         val parameterType = node.detail(DocumentationNode.Kind.Type)
         renderType(parameterType)
+        val valueNode = node.details(DocumentationNode.Kind.Value).firstOrNull()
+        if (valueNode != null) {
+            symbol(" = ")
+            text(valueNode.name)
+        }
     }
 
     private fun ContentNode.renderTypeParametersForNode(node: DocumentationNode) {