3 files changed, 20 insertions, 4 deletions
diff --git a/core/src/main/kotlin/Model/Content.kt b/core/src/main/kotlin/Model/Content.kt
index 4c69f6cb..0a38a524 100644
--- a/core/src/main/kotlin/Model/Content.kt
+++ b/core/src/main/kotlin/Model/Content.kt
@@ -45,7 +45,9 @@ data class ContentKeyword(val text: String) : ContentNode {
         get() = text.length
 }
 
-data class ContentIdentifier(val text: String, val kind: IdentifierKind = IdentifierKind.Other) : ContentNode {
+data class ContentIdentifier(val text: String,
+                             val kind: IdentifierKind = IdentifierKind.Other,
+                             val signature: String? = null) : ContentNode {
     override val textLength: Int
         get() = text.length
 }
@@ -140,7 +142,11 @@ fun content(body: ContentBlock.() -> Unit): ContentBlock {
 fun ContentBlock.text(value: String) = append(ContentText(value))
 fun ContentBlock.keyword(value: String) = append(ContentKeyword(value))
 fun ContentBlock.symbol(value: String) = append(ContentSymbol(value))
-fun ContentBlock.identifier(value: String, kind: IdentifierKind = IdentifierKind.Other) = append(ContentIdentifier(value, kind))
+
+fun ContentBlock.identifier(value: String, kind: IdentifierKind = IdentifierKind.Other, signature: String? = null) {
+    append(ContentIdentifier(value, kind, signature))
+}
+
 fun ContentBlock.nbsp() = append(ContentNonBreakingSpace)
 fun ContentBlock.softLineBreak() = append(ContentSoftLineBreak)
 fun ContentBlock.indentedSoftLineBreak() = append(ContentIndentedSoftLineBreak)
diff --git a/core/src/main/kotlin/Model/DocumentationNode.kt b/core/src/main/kotlin/Model/DocumentationNode.kt
index 3cedb8e6..f7e935b2 100644
--- a/core/src/main/kotlin/Model/DocumentationNode.kt
+++ b/core/src/main/kotlin/Model/DocumentationNode.kt
@@ -42,6 +42,7 @@ enum class NodeKind {
 
     SourceUrl,
     SourcePosition,
+    Signature,
 
     ExternalLink,
 
@@ -115,6 +116,7 @@ open class DocumentationNode(val name: String,
     fun links(kind: NodeKind): List<DocumentationNode> = links.filter { it.kind == kind }
 
     fun detail(kind: NodeKind): DocumentationNode = details.filter { it.kind == kind }.single()
+    fun detailOrNull(kind: NodeKind): DocumentationNode? = details.filter { it.kind == kind }.singleOrNull()
     fun member(kind: NodeKind): DocumentationNode = members.filter { it.kind == kind }.single()
     fun link(kind: NodeKind): DocumentationNode = links.filter { it.kind == kind }.single()
 
diff --git a/core/src/main/kotlin/Model/DocumentationReference.kt b/core/src/main/kotlin/Model/DocumentationReference.kt
index 0b40e83a..0c87d719 100644
--- a/core/src/main/kotlin/Model/DocumentationReference.kt
+++ b/core/src/main/kotlin/Model/DocumentationReference.kt
@@ -1,5 +1,6 @@
 package org.jetbrains.dokka
 
+import com.google.inject.Inject
 import com.google.inject.Singleton
 
 enum class RefKind {
@@ -35,7 +36,8 @@ class PendingDocumentationReference(val lazyNodeFrom: () -> DocumentationNode?,
 }
 
 @Singleton
-class NodeReferenceGraph() {
+class NodeReferenceGraph
+        @Inject constructor(val logger: DokkaLogger) {
     private val nodeMap = hashMapOf<String, DocumentationNode>()
     val references = arrayListOf<PendingDocumentationReference>()
 
@@ -55,7 +57,13 @@ class NodeReferenceGraph() {
         references.add(PendingDocumentationReference({ -> nodeMap[fromSignature]}, { -> nodeMap[toSignature]}, kind))
     }
 
-    fun lookup(signature: String): DocumentationNode? = nodeMap[signature]
+    fun lookup(signature: String): DocumentationNode? {
+        val result = nodeMap[signature]
+        if (result == null) {
+            logger.warn("Can't find node by signature $signature")
+        }
+        return result
+    }
 
     fun resolveReferences() {
         references.forEach { it.resolve() }