Report location of code causing KSP exceptions when generating assisted factories

compiler/src/main/java/com/squareup/anvil/compiler/codegen/dagger/DaggerGenerationUtils.kt

@@ -5,6 +5,7 @@ import com.google.devtools.ksp.getAllSuperTypes
 import com.google.devtools.ksp.getAnnotationsByType
 import com.google.devtools.ksp.getDeclaredProperties
 import com.google.devtools.ksp.getVisibility
+import com.google.devtools.ksp.symbol.FileLocation
 import com.google.devtools.ksp.symbol.KSClassDeclaration
 import com.google.devtools.ksp.symbol.KSFunctionDeclaration
 import com.google.devtools.ksp.symbol.KSPropertyDeclaration
@@ -138,7 +139,7 @@ private fun KSValueParameter.toConstructorParameter(
 ): ConstructorParameter? {
   val type = type.resolve()
   if (type.isError) return null
-  val paramTypeName = type.contextualToTypeName(this, typeParameterResolver)
+  val paramTypeName = reportLocationOnError { type.contextualToTypeName(this, typeParameterResolver) }
   val rawType = paramTypeName.requireRawType()
 
   val isWrappedInProvider = rawType == providerClassName
@@ -611,3 +612,17 @@ internal fun assertNoDuplicateFunctions(
     )
   }
 }
+
+private fun <D : KSValueParameter, T> D.reportLocationOnError(block: () -> T): T {
+  return try {
+    block()
+  } catch (e: Exception) {
+    val name = name?.asString() ?: "unknown"
+    val locationDescription = (location as? FileLocation)?.let {
+      "${it.filePath}:${it.lineNumber}"
+    } ?: "unknown location"
+    throw IllegalArgumentException(
+      "Failed to resolve type for parameter '$name' at $locationDescription", e
+    )
+  }
+}