"

 COPYRIGHT (c) 1989-93 by Claus Gittinger

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

MessageNode subclass:#CascadeNode

       instanceVariableNames:''

       classVariableNames:''

       poolDictionaries:''

       category:'System-Compiler-Support'

!

CascadeNode comment:'

COPYRIGHT (c) 1989-93 by Claus Gittinger

              All Rights Reserved

%W% %E%

'!

!CascadeNode methodsFor: 'code generation'!

codeOn:aStream inBlock:b valueNeeded:valueNeeded

    receiver codeForCascadeOn:aStream inBlock:b.

    self codeSendOn:aStream inBlock:b valueNeeded:valueNeeded

!

codeForCascadeOn:aStream inBlock:b

    receiver codeForCascadeOn:aStream inBlock:b.

    aStream nextPut:#dup.

    self codeSendOn:aStream inBlock:b valueNeeded:false

! !

!CascadeNode methodsFor: 'evaluating'!

evaluate

    |t argValueArray index|

    t := receiver evaluateForCascade.

    argArray isNil ifTrue:[

        t perform:selector.

        ^ t

    ].

    argValueArray := Array new:(argArray size).

    index := 1.

    argArray do:[:arg |

        argValueArray at:index put:(arg evaluate).

        index := index + 1

    ].

    ^ t perform:selector withArguments:argValueArray

!

evaluateForCascade

    |t argValueArray index|

    t := receiver evaluateForCascade.

    argArray isNil ifTrue:[

        t perform:selector.

        ^ t

    ].

    argValueArray := Array new:(argArray size).

    index := 1.

    argArray do:[:arg |

        argValueArray at:index put:(arg evaluate).

        index := index + 1

    ].

    t perform:selector withArguments:argValueArray.

    ^ t

! !