3 files changed, 20 insertions, 2 deletions
diff --git a/core/src/main/kotlin/model/Documentable.kt b/core/src/main/kotlin/model/Documentable.kt
index c7b2290e..64c3e14c 100644
--- a/core/src/main/kotlin/model/Documentable.kt
+++ b/core/src/main/kotlin/model/Documentable.kt
@@ -518,6 +518,15 @@ fun <T> SourceSetDependent<T>?.orEmpty(): SourceSetDependent<T> = this ?: emptyM
 
 interface DocumentableSource {
     val path: String
+
+    /**
+     * Computes the first line number of the documentable's declaration/signature/identifier.
+     *
+     * Numbering is always 1-based.
+     *
+     * May return null if the sources could not be found - for example, for synthetic/generated declarations.
+     */
+    fun computeLineNumber(): Int?
 }
 
-data class TypeConstructorWithKind(val typeConstructor: TypeConstructor, val kind: ClassKind)
-\ No newline at end of file
+data class TypeConstructorWithKind(val typeConstructor: TypeConstructor, val kind: ClassKind)
diff --git a/core/src/main/kotlin/model/WithChildren.kt b/core/src/main/kotlin/model/WithChildren.kt
index 01a188c8..7412971a 100644
--- a/core/src/main/kotlin/model/WithChildren.kt
+++ b/core/src/main/kotlin/model/WithChildren.kt
@@ -91,4 +91,4 @@ fun <T : WithChildren<T>> T.asPrintableTree(
     }
 
     return buildString { append(this@asPrintableTree, "", "") }
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/kotlin/model/documentableProperties.kt b/core/src/main/kotlin/model/documentableProperties.kt
index 9fe8aa1d..4e743b0a 100644
--- a/core/src/main/kotlin/model/documentableProperties.kt
+++ b/core/src/main/kotlin/model/documentableProperties.kt
@@ -49,6 +49,15 @@ object IsVar : ExtraProperty<DProperty>, ExtraProperty.Key<DProperty, IsVar> {
     override val key: ExtraProperty.Key<DProperty, *> = this
 }
 
+data class IsAlsoParameter(val inSourceSets: List<DokkaSourceSet>) : ExtraProperty<DProperty> {
+    companion object : ExtraProperty.Key<DProperty, IsAlsoParameter> {
+        override fun mergeStrategyFor(left: IsAlsoParameter, right: IsAlsoParameter): MergeStrategy<DProperty> =
+            MergeStrategy.Replace(IsAlsoParameter(left.inSourceSets + right.inSourceSets))
+    }
+
+    override val key: ExtraProperty.Key<DProperty, *> = IsAlsoParameter
+}
+
 data class CheckedExceptions(val exceptions: SourceSetDependent<List<DRI>>) : ExtraProperty<Documentable>, ExtraProperty.Key<Documentable, ObviousMember> {
     companion object : ExtraProperty.Key<Documentable, CheckedExceptions> {
         override fun mergeStrategyFor(left: CheckedExceptions, right: CheckedExceptions) =