Package org.freedesktop.dbus.utils.generator

Class StructTreeBuilder

java.lang.Object

org.freedesktop.dbus.utils.generator.StructTreeBuilder

public class StructTreeBuilder
extends Object

Helper to create a DBus struct class. As Structs are regular classes (POJOs) in Java, this helper also takes care about recursion (Struct in Struct/Map/List).

Since:

v3.0.1 - 2018-12-21

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	StructTreeBuilder.StructTree	Class to represent a tree structure.

Constructor Summary

Constructors

Constructor	Description
StructTreeBuilder()

Method Summary

Modifier and Type	Method	Description
String	buildStructClasses(String _dbusSig, String _structName, ClassBuilderInfo _clzBldr, List<ClassBuilderInfo> _generatedClasses)	Builds the struct(s) found in _dbusSig.
private List<StructTreeBuilder.StructTree>	buildTree(ParameterizedType _pType)	Create tree from ParameterizedType.
private List<StructTreeBuilder.StructTree>	buildTree(String _dbusTypeStr)	Builds a tree of types based on the given DBus type definition string.
private ClassBuilderInfo	createNested(List<StructTreeBuilder.StructTree> _list, ClassBuilderInfo _root, List<ClassBuilderInfo> _classes)	Create nested Struct class.
(package private) static void	printTree(List<StructTreeBuilder.StructTree> _buildTree, int _indent)	Helper to print a StructTree to STDOUT (for debugging purposes).

Methods inherited from class java.lang.Object

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

Constructor Details

StructTreeBuilder

public StructTreeBuilder()

Method Details

buildStructClasses

public String buildStructClasses(String _dbusSig,
 String _structName,
 ClassBuilderInfo _clzBldr,
 List<ClassBuilderInfo> _generatedClasses)
                          throws DBusException

Builds the struct(s) found in _dbusSig. If the struct is wrapped in a Collection, it will be unwrapped.

The resulting String will return the parent class name. This can be the Structs classname or e.g. List/Set class if the struct was wrapped in a Collection.

Structs which are inside of another struct will get the appendix 'Struct' for each iteration. This may lead to classes with names like FooStructStructStruct (FooStruct->(InnerStruct->InnerInnerStruct)).

Parameters:

_dbusSig - dbus Type string

_structName - name the struct should have

_clzBldr - class builder with the class where the struct was first seen

_generatedClasses - a list, this will contain additional struct classes created, if any. Should never be null!

Returns:

Struct class name or Collection type name

Throws:

DBusException - on DBus Error

createNested

private ClassBuilderInfo createNested(List<StructTreeBuilder.StructTree> _list,
 ClassBuilderInfo _root,
 List<ClassBuilderInfo> _classes)

Create nested Struct class.

Parameters:

_list - List of struct tree elements

_root - root class of this struct (maybe other struct)

_classes - a list, this will contain additional struct classes created, if any. Should never be null!

Returns:

last created struct or null

printTree

static void printTree(List<StructTreeBuilder.StructTree> _buildTree,
 int _indent)

Helper to print a StructTree to STDOUT (for debugging purposes).

Parameters:

_buildTree - tree to print

_indent - indention level (usually 0)

buildTree

private List<StructTreeBuilder.StructTree> buildTree(String _dbusTypeStr)
                                              throws DBusException

Builds a tree of types based on the given DBus type definition string.

Parameters:

_dbusTypeStr - DBus type string

Returns:

List with tree structure, maybe empty - never null

Throws:

DBusException - on Error

buildTree

private List<StructTreeBuilder.StructTree> buildTree(ParameterizedType _pType)
                                              throws DBusException

Create tree from ParameterizedType.

Parameters:

_pType - ParameterizedType object

Returns:

List of tree elements, maybe empty, never null

Throws:

DBusException - on error