ua.gradsoft.termware.transformers.list
Class ListInsertTransformer

java.lang.Object
  ua.gradsoft.termware.AbstractBuildinTransformer
      ua.gradsoft.termware.transformers.list.ListInsertTransformer

All Implemented Interfaces:

ITermTransformer

public class ListInsertTransformer
extends AbstractBuildinTransformer

Insert(e,pos,l) - insert e at pos position in list l. Insert(e,l) - same as Insert(e,0,l) More formal definition: insert($x, 0, $y) [isList($y)] -> [$x:$y] insert($x, $pos, [$y:$z]) [isInt(pos)] -> [$y:insert($x,$pos-1,$z)] insert($x, $pos NIL) -> cons($x,NIL)

Author:

Ruslan Shevchenko

Field Summary

static ListInsertTransformer

INSTANCE

Method Summary

String	getDescription() get description of transformer.
String	getName() get name of transformer.
static Term	insert(Term el, int pos, Term list, TermSystem system)
boolean	internalsAtFirst()
static Term	static_transform(Term t, TermSystem system, TransformationContext ctx)
Term	transform(Term t, TermSystem system, TransformationContext ctx) attempt to transform term t .

Methods inherited from class ua.gradsoft.termware.AbstractBuildinTransformer

getSource

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ListInsertTransformer INSTANCE

Method Detail

transform

public Term transform(Term t,
                      TermSystem system,
                      TransformationContext ctx)
               throws TermWareException

Description copied from interface: ITermTransformer

attempt to transform term t .

Parameters:

t - - term to transform

system - - system which give us access to ebvironment.

ctx - - context of transformation.

Returns:

- transformed term.

Throws:

TermWareException

static_transform

public static Term static_transform(Term t,
                                    TermSystem system,
                                    TransformationContext ctx)
                             throws TermWareException

Throws:

TermWareException

insert

public static Term insert(Term el,
                          int pos,
                          Term list,
                          TermSystem system)
                   throws TermWareException

Throws:

TermWareException

getDescription

public String getDescription()

Description copied from class: AbstractBuildinTransformer

get description of transformer. Default behaviour -- return the value of annotation @TransformerDescription binded to this.getClass().

Specified by:

getDescription in interface ITermTransformer

Overrides:

getDescription in class AbstractBuildinTransformer

See Also:

TransformerDescription

getName

public String getName()

Description copied from class: AbstractBuildinTransformer

get name of transformer. Default behaviour -- return the value of annotation @TransformerName binded to this.getClass().

Specified by:

getName in interface ITermTransformer

Overrides:

getName in class AbstractBuildinTransformer

Returns:

name of transformer.

See Also:

TransformerName

internalsAtFirst

public boolean internalsAtFirst()