"

 COPYRIGHT (c) 2006 by eXept Software AG

 COPYRIGHT (c) 2020 LabWare

	      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.

"

"{ Package: 'stx:libcomp' }"

"{ NameSpace: Smalltalk }"

ParseNode subclass:#BreakpointNode

	instanceVariableNames:'breakpoint expression lineNumber'

	classVariableNames:''

	poolDictionaries:''

	category:'System-Compiler-Debugging'

!

!BreakpointNode class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 2006 by eXept Software AG

 COPYRIGHT (c) 2020 LabWare

	      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.

"

!

documentation

"

    compiler support for statement breakpoints.

"

! !

!BreakpointNode methodsFor:'accessing'!

breakpoint

    ^ breakpoint

!

breakpoint:something

    breakpoint := something.

!

endPosition

    ^ expression endPosition

!

expression

    ^ expression

!

expression: aParseNode

    expression := aParseNode.

    expression parent: self

    "Modified: / 08-08-2020 / 22:46:45 / Jan Vrany <jan.vrany@labware.com>"

!

lineNumber

    ^ lineNumber

!

lineNumber:lineNumberArg

    self assert:(lineNumberArg >= 0).

    lineNumber := lineNumberArg.

!

realNode

    ^ expression

!

selectorPosition

    ^ expression selectorPosition

!

startPosition

    ^ expression startPosition

! !

!BreakpointNode methodsFor:'code generation'!

codeForCascadeOn:aStream inBlock:b for:aCompiler

    |node|

    node := UnaryNode

                receiver: (ConstantNode value: breakpoint)

                selector: #break.

    node lineNumber:lineNumber.

    node codeForSideEffectOn:aStream inBlock:b for:aCompiler.

    expression notNil ifTrue:[

        expression codeForCascadeOn:aStream inBlock:b for:aCompiler

    ].

    "Modified: / 26-03-2018 / 15:39:38 / stefan"

!

codeForSideEffectOn:aStream inBlock:b for:aCompiler

    |node|

    node := UnaryNode

                receiver: (ConstantNode value: breakpoint)

                selector: #break.

    node lineNumber:lineNumber.

    node codeForSideEffectOn:aStream inBlock:b for:aCompiler.

    expression notNil ifTrue:[

        expression codeForSideEffectOn:aStream inBlock:b for:aCompiler

    ].

    "Modified: / 26-03-2018 / 15:39:33 / stefan"

!

codeOn:aStream inBlock:codeBlock for:aCompiler

    |node|

    "/ Transcript showCR:'**** bpCode: %1 expr: %2' with:lineNumber with:expression printString.

    node := UnaryNode

                receiver: (ConstantNode value: breakpoint)

                selector: #break.

    node lineNumber:lineNumber.

    node codeForSideEffectOn:aStream inBlock:codeBlock for:aCompiler.

    expression notNil ifTrue:[

        expression codeOn:aStream inBlock:codeBlock for:aCompiler

    ].

    "Created: / 16-06-2011 / 15:17:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 22-07-2013 / 16:08:34 / cg"

    "Modified: / 26-03-2018 / 15:38:22 / stefan"

! !

!BreakpointNode methodsFor:'enumerating'!

childrenDo:aBlock

    aBlock value:expression

! !

!BreakpointNode methodsFor:'enumeration'!

allSubNodesDo:aBlock

    aBlock value: expression.

    expression allSubNodesDo:aBlock.

    "Created: / 08-08-2020 / 08:45:51 / Jan Vrany <jan.vrany@labware.com>"

!

blockNodesDo:aBlock recursively: aBoolean

    "

    Evaluate `aBlock` for each `BlockNode` in receicer's subtree. 

    If, `aBoolean` is true, then recurse into block nodes themselves, 

    evaluating `aBlock` for (all) nested blocks.

    If `aBoolean` is false, stop at any block node.

    " 

    ^ expression blockNodesDo:aBlock recursively: aBoolean

    "Created: / 08-08-2020 / 08:46:44 / Jan Vrany <jan.vrany@labware.com>"

!

messagesDo:aBlock

    "evaluate aBlock for each message-node here and in subnodes"

    ^ expression messagesDo:aBlock

    "Created: / 08-08-2020 / 08:46:12 / Jan Vrany <jan.vrany@labware.com>"

!

variableNodesDo:aBlock

    "evaluate aBlock for each variable-node here and in subnodes"

    ^ expression variableNodesDo:aBlock

    "Created: / 08-08-2020 / 08:46:24 / Jan Vrany <jan.vrany@labware.com>"

! !

!BreakpointNode methodsFor:'evaluation'!

evaluateIn:anEnvironment

    ^ expression evaluateIn:anEnvironment

    "Created: / 20-02-2019 / 22:17:35 / Claus Gittinger"

! !

!BreakpointNode methodsFor:'node protocol forwarding'!

arg1

    "must forward - otherwise cascades won't work"

    ^ expression arg1

!

args

    "must forward - otherwise keywordExpression won't work"

    ^ expression args

!

argumentCount

    "must forward - otherwise checkCondition won't work"

    ^ expression argumentCount

!

arguments

    "must forward - otherwise cascades won't work"

    ^ expression arguments

!

isMessage

    "must forward - otherwise cascades won't work"

    ^ expression isMessage

!

isUnaryMessage

    "must forward - otherwise cascades won't work"

    ^ expression isUnaryMessage

    "Created: / 26-07-2020 / 18:24:18 / cg"

!

numArgs

    <resource: #obsolete>

    "must forward - otherwise checkCondition won't work.

     Please use argumentCount, which is ANSI"

    ^ expression numArgs

!

plausibilityCheckIn:aParser

    ^ expression plausibilityCheckIn:aParser

    "Created: / 20-11-2016 / 19:17:54 / cg"

!

receiver

    "must forward - otherwise cascades won't work"

    ^ expression receiver

!

selector

    "must forward - otherwise cascades won't work"

    ^ expression selector

! !

!BreakpointNode methodsFor:'printing'!

printOn:aStream indent:indent

    "append a user printed representation of the receiver to aStream.

     The format is suitable for a human - not meant to be read back."

    aStream show:'BP [%1] before: ' with:lineNumber.

    expression printOn:aStream indent:indent.

    "Created: / 06-07-2011 / 14:31:10 / cg"

! !

!BreakpointNode methodsFor:'testing'!

isBreakPointNode

    ^ true

    "Created: / 05-07-2011 / 21:13:52 / cg"

! !

!BreakpointNode class methodsFor:'documentation'!

version

    ^ '$Header$'

!

version_CVS

    ^ '$Header$'

!

version_HG

    ^ '$Changeset: <not expanded> $'

!

version_SVN

    ^ '$ Id $'

! !