"

 COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague

	      All Rights Reserved

Permission is hereby granted, free of charge, to any person

obtaining a copy of this software and associated documentation

files (the 'Software'), to deal in the Software without

restriction, including without limitation the rights to use,

copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the

Software is furnished to do so, subject to the following

conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"

"{ Package: 'stx:libtool' }"

"{ NameSpace: Tools }"

CodeViewService subclass:#BreakpointService

	instanceVariableNames:'breakpoints currentMethod'

	classVariableNames:''

	poolDictionaries:''

	category:'Interface-CodeView'

!

!BreakpointService class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague

	      All Rights Reserved

Permission is hereby granted, free of charge, to any person

obtaining a copy of this software and associated documentation

files (the 'Software'), to deal in the Software without

restriction, including without limitation the rights to use,

copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the

Software is furnished to do so, subject to the following

conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"

! !

!BreakpointService methodsFor:'accessing'!

breakpoints

    ^ breakpoints

! !

!BreakpointService methodsFor:'change & update'!

update: aspect with: param from: sender

    |method|

    method := codeView methodHolder value.

    method ~~ currentMethod ifTrue:[

	self updateBreakPointsFor:method.

    ].

    super update: aspect with: param from: sender

    "Created: / 06-07-2011 / 15:21:08 / cg"

!

updateBreakPointsFor:aMethod

    |methodsBreakPoints|

    methodsBreakPoints := OrderedCollection new.

    aMethod notNil ifTrue:[

	aMethod literalsDo:[:eachLiteral |

	    eachLiteral class == Breakpoint ifTrue:[

		methodsBreakPoints add:eachLiteral copy.

	    ].

	].

    ].

    breakpoints := methodsBreakPoints.

    currentMethod := aMethod.

    "Created: / 06-07-2011 / 15:24:09 / cg"

    "Modified: / 06-07-2011 / 17:32:54 / jv"

! !

!BreakpointService methodsFor:'event handling'!

buttonPress:button x:x y:y in:view

    |lineNr|

    codeView methodHolder value isNil ifTrue:[

	^ false

    ].

    view == gutterView ifTrue:[

	button == 1 ifTrue:[

	    lineNr := textView yVisibleToLineNr:y.

	    lineNr notNil ifTrue:[ self setOrToggleBreakpointAtLine:lineNr ].

	    ^ true.

	].

	button == 3 ifTrue:[

	    ^ true.

	]

    ].

    ^ false

    "Created: / 17-06-2011 / 13:05:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 28-06-2011 / 08:31:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 19-09-2011 / 14:41:00 / cg"

!

linesDeletedFrom: start to: end

    breakpoints isEmptyOrNil ifTrue:[^self].

    self moveBreakpointsAfterLine: start - 1 by: (end - start + 1) negated

    "Created: / 06-07-2011 / 17:16:27 / jv"

!

linesInsertedFrom: start to: end

    breakpoints isEmptyOrNil ifTrue:[^self].

    self moveBreakpointsAfterLine: start - 1 by: (end - start + 1)

    "Created: / 06-07-2011 / 17:16:36 / jv"

! !

!BreakpointService methodsFor:'initialization'!

initialize

    super initialize.

    breakpoints := OrderedCollection new.

    "Created: / 17-06-2011 / 13:49:12 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!BreakpointService methodsFor:'private'!

breakpointAtLine:line

    |pos|

    pos := textView characterPositionOfLine:line col:1.

    ^ breakpoints ? #() detect:[:each | each position = pos ] ifNone:[ nil ]

    "Modified: / 17-06-2011 / 13:59:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (format): / 05-07-2011 / 21:33:23 / cg"

!

moveBreakpointsAfterLine:line by: delta

    |pos |

    breakpoints do:[:bpnt|

        bpnt line >= line ifTrue:[

            pos := textView characterPositionOfLine:bpnt line + delta col:1.

            bpnt position:pos line:(bpnt line + delta). 

        ]

    ].

    "/gutterView redrawLinesFrom: line.

    "Created: / 17-06-2011 / 13:45:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Created: / 06-07-2011 / 17:26:30 / jv"

    "Modified: / 02-08-2012 / 09:27:10 / cg"

!

recompile

    "recompile the current method for changed breakpoints"

    |oldMethod newMethod compiler class selector|

    oldMethod := codeView methodHolder value.

    (oldMethod notNil and:[oldMethod hasPrimitiveCode not]) ifTrue:[

        "/ be careful: if the text has been edited/modified, do not compile

        textView modified ifTrue:[

            self breakPoint: #cg.

            self breakPoint: #jv.

            ^self.

        ] ifFalse:[

            "/ prepare to get reachable bpts

            breakpoints do:[:bp | bp isReached:false].

            class := oldMethod mclass.

            class isNil ifTrue:[

                class := codeView classHolder value.

                class isNil ifTrue:[

                    self breakPoint:#jv.

                    Dialog warn:'oops - lost the methods''s class'.

                    ^ self.

                ]

            ].

            selector := oldMethod selector.

            Class withoutUpdatingChangesDo:[

                compiler := ByteCodeCompilerWithBreakpointSupport new.

                compiler breakpoints:breakpoints.

                compiler methodClass:MethodWithBreakpoints.

                newMethod := compiler

                            compile:oldMethod source

                            forClass:class

                            inCategory:oldMethod category

                            notifying:nil

                            install:false

                            skipIfSame:false

                            silent:true

                            foldConstants:true

                            ifFail:[ Transcript showCR:'BreakpointService: failed to recompile for breakpoint' ].

                selector isNil ifTrue:[

                    "/ May happen as the selector is not stored in the method but

                    "/ searches through method's mclass methodDictionary.

                    "/ Following should be save as breakpoint is not installed when

                    "/ the code is modified...

                    selector := compiler selector.

                ].

                ].

                codeView methodHolder value:newMethod.

                oldMethod mclass isNil ifTrue:[

                    "/ although this is not strictly true, not doing this

                    "/ would confuse a lot of other tools (such as the browser)

                    oldMethod mclass:class.

                ].

                class changed:#methodTrap with:selector. "/ tell browsers

                MethodTrapChangeNotificationParameter notNil ifTrue:[    

                    Smalltalk changed:#methodTrap with:(MethodTrapChangeNotificationParameter changeClass:class changeSelector:selector).

                ].

            ].

            breakpoints := breakpoints

                            select:[:bp |

"/                                bp isReached ifFalse:[ 

"/                                    "/ Transcript show:'remove unreached:'; showCR:bp 

"/                                ].

                                bp isReached

                            ]

        ]

    ]

    "Created: / 05-07-2011 / 21:33:13 / cg"

    "Modified: / 18-07-2012 / 10:53:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 02-08-2012 / 09:35:41 / cg"

!

setOrToggleBreakpointAtLine:line

    |pos bpnt|

    textView reallyModified ifTrue:[

        "/ leads to ugly behavior (method no longer found), if we allow

        "/ this...

          Dialog warn:'Please accept first (cannot set breakpoint while text is modified)'.

        ^ self

    ].

    pos := textView characterPositionOfLine:line col:1.

    bpnt := self breakpointAtLine:line.

    bpnt isNil ifTrue:[

            breakpoints add:((bpnt := Breakpoint new) position:pos line:line).

            Display shiftDown ifTrue:[

                "/ trace

                bpnt beTracepoint

            ].

            self recompile.

        ].

    ] ifFalse:[

        Display shiftDown ifTrue:[

            bpnt toggleTracing

        ] ifFalse:[

            bpnt toggle.

        ]

    ].

    gutterView redrawLine:line.

    "Created: / 17-06-2011 / 13:45:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 27-07-2011 / 13:27:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 02-08-2012 / 09:26:38 / cg"

! !

!BreakpointService methodsFor:'redrawing'!

drawLine:lineNo in:view atX:x y:y width:w height:h from:startCol to:endColOrNil with:fg and:bg

    "Called by both gutterView and textView (well, not yet) to

     allow services to draw custom things on text view.

     Ask JV what the args means if unsure (I'm lazy to document

     them, now it is just an experiment...)"

    |bpnt icon dx dy|

    codeView methodHolder value isNil ifTrue:[

	^ self

    ].

    view == gutterView ifTrue:[

	bpnt := self breakpointAtLine:lineNo.

	bpnt isNil ifTrue:[

	    ^ self

	].

	icon := bpnt icon.

	icon isNil ifTrue:[

	    ^ self

	].

	dx := ((w - icon width) / 2) rounded.

	dy := ((h - icon height) / 2) rounded.

	icon

	    displayOn:view

	    x:x + dx

	    y:y - h + dy + 4. "TODO: Magic constant"

    ].

    "Created: / 17-06-2011 / 13:52:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified (format): / 05-07-2011 / 22:14:33 / cg"

! !

!BreakpointService class methodsFor:'documentation'!

version_CVS

!

version_SVN

! !