Support Dokka K2 analysis (#3094)

Dokka has its own documentable model to represent analyzed code. The analysis is performed by a compiler frontend.

In K1 the compiler frontend has descriptors that use the underlying Binding Context (global shared stateful structure). Dokka just maps descriptors to Documentable by DefaultDescriptorToDocumentableTranslator.

K2 compiler has FIR tree, which means “Frontend Intermediate Representation”, instead of Binding Context. But we do not use FIR in Dokka directly, since it is too low-level for analysis. The Kotlin compiler provides high-level Analysis API for this case. The API is used by KSP too. Analysis API represent elements of FIR (declarations, parameters and so on) as Symbols. For more details see KtSymbolByFirBuilder, KtSymbol.
For Dokka symbol is the replacement of descriptor in K2.

Also, to set up the environment of project analysis in K1 we use idea dependencies (or copy-past from there). In K2 for these aims, there is a Standalone mode for Analysis API.

1 files changed, 3 insertions, 0 deletions

diff --git a/plugins/base/src/test/kotlin/content/signatures/ConstructorsSignaturesTest.kt b/plugins/base/src/test/kotlin/content/signatures/ConstructorsSignaturesTest.kt
index 0cf94c18..e57e6a8c 100644
--- a/plugins/base/src/test/kotlin/content/signatures/ConstructorsSignaturesTest.kt
+++ b/plugins/base/src/test/kotlin/content/signatures/ConstructorsSignaturesTest.kt
@@ -5,6 +5,7 @@ import org.jetbrains.dokka.base.testApi.testRunner.BaseAbstractTest
 import org.jetbrains.dokka.pages.BasicTabbedContentType
 import org.jetbrains.dokka.pages.ContentPage
 import org.junit.jupiter.api.Test
+import utils.OnlyDescriptors
 
 class ConstructorsSignaturesTest : BaseAbstractTest() {
     private val testConfiguration = dokkaConfiguration {
@@ -157,6 +158,7 @@ class ConstructorsSignaturesTest : BaseAbstractTest() {
         }
     }
 
+    @OnlyDescriptors("Order of constructors is different in K2")
     @Test
     fun `class with a parameterless secondary constructor`() {
         testInline(
@@ -227,6 +229,7 @@ class ConstructorsSignaturesTest : BaseAbstractTest() {
     }
 
 
+    @OnlyDescriptors("Order of constructors is different in K2")
     @Test
     fun `class with a few documented constructors`() {
         testInline(