FIR LT: extract syntax diagnostic info from error element

#KT-56701 fixed

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -4931,4 +4931,11 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirSyntaxErrors.SYNTAX_WITH_MESSAGE) { firDiagnostic ->
+        SyntaxWithMessageImpl(
+            firDiagnostic.a,
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
 }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -3428,4 +3428,9 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = Syntax::class
     }
 
+    abstract class SyntaxWithMessage : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = SyntaxWithMessage::class
+        abstract val message: String
+    }
+
 }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -4150,3 +4150,9 @@ internal class SyntaxImpl(
     override val token: KtLifetimeToken,
 ) : KtFirDiagnostic.Syntax(), KtAbstractFirDiagnostic<PsiElement>
 
+internal class SyntaxWithMessageImpl(
+    override val message: String,
+    override val firDiagnostic: KtPsiDiagnostic,
+    override val token: KtLifetimeToken,
+) : KtFirDiagnostic.SyntaxWithMessage(), KtAbstractFirDiagnostic<PsiElement>
+

compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirSyntaxDiagnosticList.kt

@@ -14,5 +14,8 @@ import org.jetbrains.kotlin.fir.checkers.generator.diagnostics.model.DiagnosticL
 object SYNTAX_DIAGNOSTIC_LIST : DiagnosticList("FirSyntaxErrors") {
     val Syntax by object : DiagnosticGroup("Syntax") {
         val SYNTAX by error<PsiElement>()
+        val SYNTAX_WITH_MESSAGE by error<PsiElement>() {
+            parameter<String>("message")
+        }
     }
 }

compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.fir.lightTree.converter
 
 import com.intellij.lang.LighterASTNode
+import com.intellij.lang.impl.PsiBuilderImpl
 import com.intellij.psi.TokenType
 import com.intellij.util.diff.FlyweightCapableTreeStructure
 import org.jetbrains.kotlin.*
@@ -91,7 +92,12 @@ class DeclarationsConverter(
     private val expressionConverter = ExpressionsConverter(session, tree, this, context)
 
     override fun reportSyntaxError(node: LighterASTNode) {
-        diagnosticsReporter?.reportOn(node.toFirSourceElement(), FirSyntaxErrors.SYNTAX, diagnosticContext!!)
+        val message = PsiBuilderImpl.getErrorMessage(node)
+        if (message == null) {
+            diagnosticsReporter?.reportOn(node.toFirSourceElement(), FirSyntaxErrors.SYNTAX, diagnosticContext!!)
+        } else {
+            diagnosticsReporter?.reportOn(node.toFirSourceElement(), FirSyntaxErrors.SYNTAX_WITH_MESSAGE, message, diagnosticContext!!)
+        }
     }
 
     /**

compiler/fir/raw-fir/raw-fir.common/gen/org/jetbrains/kotlin/fir/builder/FirSyntaxErrors.kt

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.diagnostics.rendering.RootDiagnosticRendererFactory
 object FirSyntaxErrors {
     // Syntax
     val SYNTAX by error0<PsiElement>()
+    val SYNTAX_WITH_MESSAGE by error1<PsiElement, String>()
 
     init {
         RootDiagnosticRendererFactory.registerFactory(FirSyntaxErrorsDefaultMessages)

compiler/fir/raw-fir/raw-fir.common/src/org/jetbrains/kotlin/fir/builder/FirSyntaxErrorsDefaultMessages.kt

@@ -6,11 +6,14 @@
 package org.jetbrains.kotlin.fir.builder
 
 import org.jetbrains.kotlin.diagnostics.KtDiagnosticFactoryToRendererMap
+import org.jetbrains.kotlin.diagnostics.KtDiagnosticRenderers.TO_STRING
 import org.jetbrains.kotlin.diagnostics.rendering.BaseDiagnosticRendererFactory
+import org.jetbrains.kotlin.diagnostics.rendering.Renderer
 
 @Suppress("unused")
 object FirSyntaxErrorsDefaultMessages : BaseDiagnosticRendererFactory() {
     override val MAP = KtDiagnosticFactoryToRendererMap("FIR").also { map ->
         map.put(FirSyntaxErrors.SYNTAX, "Syntax error")
+        map.put(FirSyntaxErrors.SYNTAX_WITH_MESSAGE, "Syntax error: {0}", TO_STRING)
     }
 }

compiler/testData/cli/jvm/firSyntaxError.out

@@ -1,5 +1,5 @@
 warning: language version 2.0 is experimental, there are no backwards compatibility guarantees for new language and library features
-compiler/testData/cli/jvm/firSyntaxError.kt:1:10: error: syntax error
+compiler/testData/cli/jvm/firSyntaxError.kt:1:10: error: syntax error: Expecting '}'
 fun a() {
          ^
 COMPILATION_ERROR