Class DefinedObjectBuilder

java.lang.Object

edu.uky.cs.nil.sabre.io.DefinedObjectBuilder

All Implemented Interfaces:

Builder

public class DefinedObjectBuilder
extends Object
implements Builder

A builder which returns a defined object. This builder assumes the parse tree given to its build method has exactly one child and that the child can be built as a String. That string and the provided type will be used to find a defined object. Defined object builders are typically used for referencing named things defined in a universe, such as entities, or variables defined in the current context.

Author:

Stephen G. Ware

Field Summary

Fields

Modifier and Type	Field	Description
final Class<?>	type	The type of the defined object

Constructor Summary

Constructors

Constructor	Description
DefinedObjectBuilder(Class<?> type)	Constructs a new defined object builder.

Method Summary

Modifier and Type	Method	Description
Object	build(Parser parser, ParseTree tree, Definitions definitions)	Convert a parse tree into an object.

Methods inherited from class Object

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

Field Details

type

public final Class<?> type

The type of the defined object

Constructor Details

DefinedObjectBuilder

public DefinedObjectBuilder(Class<?> type)

Constructs a new defined object builder.

Parameters:

type - the type of the defined object

Method Details

build

public Object build(Parser parser,
 ParseTree tree,
 Definitions definitions)
             throws ParseException

Description copied from interface: Builder

Convert a parse tree into an object.

Specified by:

build in interface Builder

Parameters:

parser - the parser which called this method, in case it is needed to build and of the parse tree's children

tree - the parse tree to be converted into an object

definitions - a set of other objects which have already been defined in the same context and which may be referenced by this parse tree

Returns:

an object created according to the parse tree

Throws:

ParseException - if the parse tree does not define a valid object