enh: Add context on classgraph errors

Author: piiertho

kt/entry-generation/godot-class-graph-symbol-processor/src/main/kotlin/godot/annotation/processor/classgraph/extensions/AnnotationExtensions.kt

@@ -44,7 +44,7 @@ import io.github.classgraph.AnnotationInfo
 import io.github.classgraph.ClassRefTypeSignature
 import io.github.classgraph.FieldInfo
 
-fun AnnotationInfo.mapToGodotAnnotation(parentDeclaration: Any): GodotAnnotation? {
+fun AnnotationInfo.mapToGodotAnnotation(parentDeclaration: Any, declarationString: String): GodotAnnotation? {
     @Suppress("UNCHECKED_CAST")
     return when (name) {
         RegisterClass::class.java.name -> RegisterClassAnnotation(
@@ -67,7 +67,7 @@ fun AnnotationInfo.mapToGodotAnnotation(parentDeclaration: Any): GodotAnnotation
         EnumFlag::class.java.name -> {
             if (parentDeclaration !is FieldInfo) {
                 ErrorsDatabase.add(
-                    "EnumFlag annotation should be placed on property."
+                    "EnumFlag annotation has been set on $declarationString. It should be placed on property only."
                 )
                 return EnumFlagHintStringAnnotation(enumValueNames = listOf(), source = this)
             }
@@ -76,9 +76,10 @@ fun AnnotationInfo.mapToGodotAnnotation(parentDeclaration: Any): GodotAnnotation
 
             require(typeDescriptor is ClassRefTypeSignature)
 
-            if (typeDescriptor.fullyQualifiedClassName != SET) {
+            val fullyQualifiedClassName = typeDescriptor.fullyQualifiedClassName
+            if (fullyQualifiedClassName != SET) {
                 ErrorsDatabase.add(
-                    "Property annotated with EnumFlag should be of type $SET"
+                    "Property annotated with EnumFlag should be of type $SET, $declarationString is of type $fullyQualifiedClassName"
                 )
                 return EnumFlagHintStringAnnotation(enumValueNames = listOf(), source = this)
             }

kt/entry-generation/godot-class-graph-symbol-processor/src/main/kotlin/godot/annotation/processor/classgraph/extensions/ClassExtentions.kt

@@ -24,7 +24,7 @@ fun ClassInfo.mapToClazz(settings: Settings): Clazz {
     val supertypes = superclasses.union(interfaces).map { it.mapToClazz(settings) }
 
     val annotations = annotationInfo
-        .mapNotNull { it.mapToGodotAnnotation(this) as? ClassAnnotation }
+        .mapNotNull { it.mapToGodotAnnotation(this, fqName) as? ClassAnnotation }
 
     val methods = methodInfo
         .filter { it.hasAnnotation(RegisterFunction::class.java) }

kt/entry-generation/godot-class-graph-symbol-processor/src/main/kotlin/godot/annotation/processor/classgraph/extensions/FieldExtensions.kt

@@ -19,7 +19,7 @@ import io.github.classgraph.MethodInfo
 fun FieldInfo.mapToRegisteredProperty(settings: Settings, classInfo: ClassInfo): RegisteredProperty {
     // Map annotations
     val annotations = getAnnotations(classInfo)
-        .mapNotNull { it.mapToGodotAnnotation(this) as? PropertyAnnotation }
+        .mapNotNull { it.mapToGodotAnnotation(this, fqName) as? PropertyAnnotation }
         .toMutableList()
 
     // Handle enums and collections with enums
@@ -121,7 +121,7 @@ fun FieldInfo.mapFieldToRegisteredSignal(settings: Settings, classInfo: ClassInf
                     .getValue(signalParametersName) as Array<String>
                 ).toList(),
         isOverridee = isOverridee,
-        annotations = annotations.mapNotNull { it.mapToGodotAnnotation(this) as? PropertyAnnotation },
+        annotations = annotations.mapNotNull { it.mapToGodotAnnotation(this, fqName) as? PropertyAnnotation },
         symbolProcessorSource = this
     )
 }

kt/entry-generation/godot-class-graph-symbol-processor/src/main/kotlin/godot/annotation/processor/classgraph/extensions/MethodExtensions.kt

@@ -9,7 +9,7 @@ import io.github.classgraph.MethodInfo
 
 fun MethodInfo.mapMethodToRegisteredFunction(currentClass: ClassInfo, settings: Settings): RegisteredFunction {
     val parameters = parameterInfo.map { it.mapToValueParameter(settings) }
-    val annotations = annotationInfo.mapNotNull { it.mapToGodotAnnotation(this) as? FunctionAnnotation }
+    val annotations = annotationInfo.mapNotNull { it.mapToGodotAnnotation(this, fqName) as? FunctionAnnotation }
 
     val typeDescriptor = TypeDescriptor(this)
     return RegisteredFunction(