Package com.vaadin.copilot.kotlinrewriter

Class KotlinModifier

java.lang.Object

com.vaadin.copilot.kotlinrewriter.KotlinModifier

All Implemented Interfaces:

ClassDeclarationModifier

public class KotlinModifier
extends Object
implements ClassDeclarationModifier

Edits the header of a Kotlin class: the annotations above it and the types it implements.

The Kotlin counterpart of JavaModifier, and like every other writer here it splices text at offsets rather than mutating the tree — so a file Copilot applies a theme to comes back byte-identical except on the lines the theme needed.

The two shapes it has to get right, neither of which Java has:

• An annotation goes below any annotation already there and directly above the class keyword, which is not simply the start of the declaration: a KDoc comment is a child of the declaration in Kotlin PSI, so the declaration's own offset is the start of the documentation.
• An interface joins a supertype list, which may be absent (class App), already present (class App : VerticalLayout()), and which follows the primary constructor and the type parameters rather than the name.

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.copilot.rewriter.ClassDeclarationModifier

ClassDeclarationModifier.OperationFunction<T>, ClassDeclarationModifier.Operations

Constructor Summary

Constructors

Constructor	Description
KotlinModifier()

Method Summary

Modifier and Type	Method	Description
Map<File,String>	modify(Class<?> cls, ClassDeclarationModifier.OperationFunction<ClassDeclarationModifier.Operations> operations)	Applies the operations to the source file declaring the given class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

KotlinModifier

public KotlinModifier()

Method Details

modify

public Map<File,String> modify(Class<?> cls,
 ClassDeclarationModifier.OperationFunction<ClassDeclarationModifier.Operations> operations)
                        throws IOException

Description copied from interface: ClassDeclarationModifier

Applies the operations to the source file declaring the given class.

Specified by:

modify in interface ClassDeclarationModifier

Parameters:

cls - the class to modify

operations - what to do to it

Returns:

the file and the source it should be given, which the caller writes. Returning the content rather than writing it is what lets a caller collect several files and write them under one undo label

Throws:

IOException - if the source cannot be read