1 files changed, 123 insertions, 0 deletions
diff --git a/plugins/base/src/main/kotlin/signatures/JvmSignatureUtils.kt b/plugins/base/src/main/kotlin/signatures/JvmSignatureUtils.kt
new file mode 100644
index 00000000..0ae72109
--- /dev/null
+++ b/plugins/base/src/main/kotlin/signatures/JvmSignatureUtils.kt
@@ -0,0 +1,123 @@
+package org.jetbrains.dokka.base.signatures
+
+import org.jetbrains.dokka.base.translators.documentables.PageContentBuilder
+import org.jetbrains.dokka.model.*
+import org.jetbrains.dokka.model.properties.WithExtraProperties
+
+interface JvmSignatureUtils {
+
+    fun PageContentBuilder.DocumentableContentBuilder.annotationsBlock(d: Documentable)
+
+    fun PageContentBuilder.DocumentableContentBuilder.annotationsInline(d: Documentable)
+
+    fun <T : Documentable> WithExtraProperties<T>.modifiers(): Set<ExtraModifiers>
+
+    fun Set<ExtraModifiers>.toSignatureString(): String =
+        joinToString("") { it.name.toLowerCase() + " " }
+
+    fun <T : Documentable> WithExtraProperties<T>.annotations(): List<Annotations.Annotation> =
+        extra[Annotations]?.content ?: emptyList()
+
+    private fun Annotations.Annotation.toSignatureString(): String =
+        "@" + this.dri.classNames + "(" + this.params.entries.joinToString { it.key + "=" + it.value } + ")"
+
+    private fun PageContentBuilder.DocumentableContentBuilder.annotations(
+        d: Documentable,
+        ignored: Set<Annotations.Annotation>,
+        operation: (Annotations.Annotation) -> Unit
+    ): Unit = when (d) {
+        is DFunction -> d.annotations()
+        is DProperty -> d.annotations()
+        is DClass -> d.annotations()
+        is DInterface -> d.annotations()
+        is DObject -> d.annotations()
+        is DEnum -> d.annotations()
+        is DAnnotation -> d.annotations()
+        is DTypeParameter -> d.annotations()
+        is DEnumEntry -> d.annotations()
+        is DTypeAlias -> d.annotations()
+        is DParameter -> d.annotations()
+        else -> null
+    }?.let {
+        it.filter { it !in ignored }.forEach {
+            operation(it)
+        }
+    } ?: Unit
+
+    fun PageContentBuilder.DocumentableContentBuilder.toSignatureString(
+        a: Annotations.Annotation,
+        renderAtStrategy: AtStrategy,
+        listBrackets: Pair<Char, Char>,
+        classExtension: String
+    ) {
+        when (renderAtStrategy) {
+            is All, is OnlyOnce -> text("@")
+            is Never -> Unit
+        }
+        link(a.dri.classNames!!, a.dri)
+        text("(")
+        a.params.entries.forEachIndexed { i, it ->
+            text(it.key + " = ")
+            when (renderAtStrategy) {
+                is All -> All
+                is Never, is OnlyOnce -> Never
+            }.let { strategy ->
+                valueToSignature(it.value, strategy, listBrackets, classExtension)
+            }
+            if (i != a.params.entries.size - 1) text(", ")
+        }
+        text(")")
+    }
+
+    private fun PageContentBuilder.DocumentableContentBuilder.valueToSignature(
+        a: AnnotationParameterValue,
+        renderAtStrategy: AtStrategy,
+        listBrackets: Pair<Char, Char>,
+        classExtension: String
+    ): Unit = when (a) {
+        is AnnotationValue -> toSignatureString(a.annotation, renderAtStrategy, listBrackets, classExtension)
+        is ArrayValue -> {
+            text(listBrackets.first.toString())
+            a.value.forEachIndexed { i, it ->
+                valueToSignature(it, renderAtStrategy, listBrackets, classExtension)
+                if (i != a.value.size - 1) text(", ")
+            }
+            text(listBrackets.second.toString())
+        }
+        is EnumValue -> link(a.enumName, a.enumDri)
+        is ClassValue -> link(a.className + classExtension, a.classDRI)
+        is StringValue -> text(a.value)
+    }
+
+    fun PageContentBuilder.DocumentableContentBuilder.annotationsBlockWithIgnored(
+        d: Documentable,
+        ignored: Set<Annotations.Annotation>,
+        renderAtStrategy: AtStrategy,
+        listBrackets: Pair<Char, Char>,
+        classExtension: String
+    ) {
+        annotations(d, ignored) {
+            group {
+                toSignatureString(it, renderAtStrategy, listBrackets, classExtension)
+            }
+        }
+    }
+
+    fun PageContentBuilder.DocumentableContentBuilder.annotationsInlineWithIgnored(
+        d: Documentable,
+        ignored: Set<Annotations.Annotation>,
+        renderAtStrategy: AtStrategy,
+        listBrackets: Pair<Char, Char>,
+        classExtension: String
+    ) {
+        annotations(d, ignored) {
+            toSignatureString(it, renderAtStrategy, listBrackets, classExtension)
+            text(Typography.nbsp.toString())
+        }
+    }
+}
+
+sealed class AtStrategy
+object All : AtStrategy()
+object OnlyOnce : AtStrategy()
+object Never : AtStrategy()
+\ No newline at end of file