"

 COPYRIGHT (c) 1998 by eXept Software AG

              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.

"

Parser subclass:#SyntaxHighlighter

	instanceVariableNames:'sourceText identifierColor identifierEmphasis

		argumentIdentifierColor argumentIdentifierEmphasis

		localIdentifierColor localIdentifierEmphasis

		unknownIdentifierColor unknownIdentifierEmphasis

		globalIdentifierColor globalIdentifierEmphasis commentColor

		commentEmphasis methodSelectorEmphasis methodSelectorColor

		selectorEmphasis selectorColor stringColor stringEmphasis

		symbolColor symbolEmphasis selfColor selfEmphasis superColor

		superEmphasis hereColor hereEmphasis thisContextColor

		thisContextEmphasis booleanConstantColor booleanConstantEmphasis

		constantColor constantEmphasis bracketColor bracketEmphasis

		instVarIdentifierColor instVarIdentifierEmphasis

		globalClassIdentifierColor globalClassIdentifierEmphasis'

	classVariableNames:''

	poolDictionaries:''

	category:'System-Compiler'

!

!SyntaxHighlighter class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1998 by eXept Software AG

              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

"

    colors a method.

"

! !

!SyntaxHighlighter class methodsFor:'highlighting'!

formatExpression:aString in:aClass

    "format (recolor) an expression in a given class.

     Return the text containing font changes and color information."

    |parser tree text endPos|

    aString isNil ifTrue:[^ nil].

    parser := self for:(ReadStream on:aString string) in:aClass.

    parser ignoreErrors.

    parser ignoreWarnings.

    parser sourceText:(text := aString string asText).

    "/ use an array here - this can be changed much faster using #at:put:

    text emphasisCollection:(Array new:aString size).

    parser nextToken.

    tree := parser expression.

    "/ now, convert the emphasis-array to a runArray

    text emphasisCollection:(text emphasis asRunArray).

    tree == #Error ifTrue:[

        "/ mhmh - which is better ...

        "/ alternative1: color rest after error in red

"/        text 

"/            emphasizeFrom:(parser sourceStream position) 

"/            to:text size 

"/            with:(#color->Color red).

        "/ alternative2: take original emphasis for rest

        endPos := parser sourceStream position.

        endPos >= text size ifTrue:[

            ^ text

        ].

        ^ (text copyTo:endPos) , (aString copyFrom:(endPos+1))

        "/ alternative3: no emphasis for rest.

"/        ^ text "/ aString

    ].

    ^ text

    "

     self

        formatExpression:'(1 + 2) max:5' 

        in:UndefinedObject

    "

    "Modified: / 7.4.1998 / 09:57:19 / cg"

    "Created: / 9.4.1998 / 16:57:16 / cg"

!

formatMethod:aString in:aClass

    "format (recolor) a method in a given class.

     Return the text containing font changes and color information."

    |parser tree text endPos|

    aString isNil ifTrue:[^ nil].

    Object errorSignal handle:[:ex |

        ^ aString

    ] do:[

        parser := self for:(ReadStream on:aString string) in:aClass.

        parser ignoreErrors.

        parser ignoreWarnings.

        parser sourceText:(text := aString string asText).

        "/ use an array here - this can be changed much faster using #at:put:

        text emphasisCollection:(Array new:aString size).

        tree := parser parseMethod.

        "/ now, convert the emphasis-array to a runArray

        text emphasisCollection:(text emphasis asRunArray).

        tree == #Error ifTrue:[

            "/ mhmh - which is better ...

            "/ alternative1: color rest after error in red

true ifTrue:[

            text 

                emphasizeFrom:(parser sourceStream position) 

                to:text size 

                with:(#color->Color red).

] ifFalse:[

            "/ alternative2: take original emphasis for rest

            endPos := parser sourceStream position.

            endPos >= text size ifTrue:[

                ^ text

            ].

            ^ (text copyTo:endPos) , (aString copyFrom:(endPos+1))

].

            "/ alternative3: no emphasis for rest.

    "/        ^ text "/ aString

        ].

        ^ text

    ]

    "

     self

        formatMethod:'foo 

    ^ self bar:''hello''.

    ' , (Character doubleQuote asString) , 'some comment' , (Character doubleQuote asString) , '

'

        in:UndefinedObject

    "

    "Modified: / 23.10.1998 / 22:48:45 / cg"

! !

!SyntaxHighlighter methodsFor:'accessing'!

sourceText

    "return the value of the instance variable 'sourceText' (automatically generated)"

    ^ sourceText

    "Created: / 31.3.1998 / 11:49:05 / cg"

!

sourceText:something

    "set the value of the instance variable 'sourceText' (automatically generated)"

    sourceText := something.

    "Created: / 31.3.1998 / 11:49:05 / cg"

! !

!SyntaxHighlighter methodsFor:'initialization'!

initialize

    |prefs|

    super initialize.

    prefs := UserPreferences current.

    identifierEmphasis := prefs identifierEmphasis.

    identifierColor := prefs identifierColor.

    argumentIdentifierEmphasis := prefs argumentIdentifierEmphasis.

    argumentIdentifierColor := prefs argumentIdentifierColor.

    localIdentifierEmphasis := prefs localIdentifierEmphasis.

    localIdentifierColor := prefs localIdentifierColor.

    instVarIdentifierEmphasis := prefs instVarIdentifierEmphasis.

    instVarIdentifierColor := prefs instVarIdentifierColor.

    globalIdentifierEmphasis := prefs globalIdentifierEmphasis.

    globalIdentifierColor := prefs globalIdentifierColor.

    globalClassIdentifierEmphasis := prefs globalClassIdentifierEmphasis.

    globalClassIdentifierColor := prefs globalClassIdentifierColor.

    unknownIdentifierEmphasis := prefs unknownIdentifierEmphasis.

    unknownIdentifierColor := prefs unknownIdentifierColor.

    commentEmphasis := prefs commentEmphasis.

    commentColor := prefs commentColor.

    methodSelectorEmphasis := prefs methodSelectorEmphasis.

    methodSelectorColor := prefs methodSelectorColor.

    selectorEmphasis := prefs selectorEmphasis.

    selectorColor := prefs selectorColor.

    stringEmphasis := prefs stringEmphasis.

    stringColor := prefs stringColor.

    symbolEmphasis := prefs symbolEmphasis.

    symbolColor := prefs symbolColor.

    selfEmphasis := prefs selfEmphasis.

    selfColor := prefs selfColor.

    hereEmphasis := prefs hereEmphasis.

    hereColor := prefs hereColor.

    superEmphasis := prefs superEmphasis.

    superColor := prefs superColor.

    thisContextEmphasis := prefs thisContextEmphasis.

    thisContextColor := prefs thisContextColor.

    constantEmphasis := prefs constantEmphasis.

    constantColor := prefs constantColor.

    booleanConstantEmphasis := prefs booleanConstantEmphasis.

    booleanConstantColor := prefs booleanConstantColor.

    bracketEmphasis := prefs bracketEmphasis.

    bracketColor := prefs bracketColor.

    "Created: / 31.3.1998 / 15:12:55 / cg"

    "Modified: / 4.3.1999 / 12:52:24 / cg"

! !

!SyntaxHighlighter methodsFor:'misc'!

defineAsUndeclaredVariable:aName

    "redefined to NOT declare undefined vars"

    ^ VariableNode type:#GlobalVariable name:aName

    "Modified: / 19.10.1998 / 19:38:12 / cg"

!

plausibilityCheck:aNode

    "redefined to NOT do checks"

    ^ aNode

    "Modified: / 19.10.1998 / 19:38:12 / cg"

    "Created: / 19.10.1998 / 19:57:18 / cg"

! !

!SyntaxHighlighter methodsFor:'syntax detection'!

markArgumentIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:argumentIdentifierEmphasis color:argumentIdentifierColor

    "Modified: / 31.3.1998 / 18:01:27 / cg"

!

markBooleanConstantFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:booleanConstantEmphasis color:booleanConstantColor

    "Created: / 31.3.1998 / 18:09:01 / cg"

    "Modified: / 31.3.1998 / 19:36:44 / cg"

!

markBracketAt:pos

    self 

        markFrom:pos to:pos 

        withEmphasis:bracketEmphasis color:bracketColor

    "Created: / 31.3.1998 / 18:09:01 / cg"

    "Modified: / 31.3.1998 / 19:36:44 / cg"

!

markCommentFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:commentEmphasis color:commentColor

    "Modified: / 31.3.1998 / 18:01:55 / cg"

!

markConstantFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:constantEmphasis color:constantColor

    "Modified: / 31.3.1998 / 18:01:44 / cg"

    "Created: / 31.3.1998 / 18:09:22 / cg"

!

markFrom:pos1 to:pos2 withEmphasis:fontEmp color:clr

    |e|

    clr = Color black ifTrue:[

        e := fontEmp

    ] ifFalse:[

        e := Text addEmphasis:fontEmp to:(#color->clr).

    ].

    sourceText emphasizeFrom:pos1 to:pos2 with:e

    "Created: / 31.3.1998 / 13:26:53 / cg"

    "Modified: / 1.4.1998 / 12:51:56 / cg"

!

markGlobalClassIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:globalClassIdentifierEmphasis color:globalClassIdentifierColor

    "Modified: / 31.3.1998 / 18:02:14 / cg"

    "Created: / 4.3.1999 / 12:53:02 / cg"

!

markGlobalIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:globalIdentifierEmphasis color:globalIdentifierColor

    "Modified: / 31.3.1998 / 18:02:14 / cg"

!

markHereFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:hereEmphasis color:hereColor

    "Modified: / 31.3.1998 / 18:02:25 / cg"

!

markIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:identifierEmphasis color:identifierColor

    "Modified: / 31.3.1998 / 18:02:39 / cg"

    "Created: / 31.3.1998 / 18:04:56 / cg"

!

markInstVarIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:instVarIdentifierEmphasis color:instVarIdentifierColor

    "Created: / 16.4.1998 / 18:35:40 / cg"

    "Modified: / 16.4.1998 / 18:37:30 / cg"

!

markLocalIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:localIdentifierEmphasis color:localIdentifierColor

    "Modified: / 31.3.1998 / 18:02:39 / cg"

!

markMethodSelectorFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:methodSelectorEmphasis color:methodSelectorColor

    "Modified: / 31.3.1998 / 18:02:52 / cg"

!

markSelectorFrom:pos1 to:pos2

"/ uncommenting the code below

"/ will suppress highlighting of common selectors ...

"/

"/    (#(

"/        'ifTrue:' 

"/        'ifFalse:'

"/        'not'

"/        'and:'

"/        'or:'

"/        '='

"/        '=='

"/        '~='

"/        '~~'

"/    ) includes:tokenName) ifTrue:[

"/        ^ self

"/    ].

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:selectorEmphasis color:selectorColor

    "Modified: / 1.4.1998 / 13:14:43 / cg"

!

markSelfFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:selfEmphasis color:selfColor

    "Modified: / 31.3.1998 / 18:03:10 / cg"

!

markStringFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:stringEmphasis color:stringColor

    "Modified: / 31.3.1998 / 18:03:18 / cg"

!

markSuperFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:superEmphasis color:superColor

    "Modified: / 31.3.1998 / 18:03:26 / cg"

!

markSymbolFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:symbolEmphasis color:symbolColor

    "Created: / 1.4.1998 / 12:56:47 / cg"

    "Modified: / 1.4.1998 / 12:58:00 / cg"

!

markThisContextFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:thisContextEmphasis color:thisContextColor

    "Modified: / 31.3.1998 / 18:03:36 / cg"

!

markUnknownIdentifierFrom:pos1 to:pos2

    self 

        markFrom:pos1 to:pos2 

        withEmphasis:unknownIdentifierEmphasis color:unknownIdentifierColor

    "Created: / 31.3.1998 / 19:09:26 / cg"

    "Modified: / 31.3.1998 / 19:10:30 / cg"

!

markVariable:v

    "support for syntaxColoring"

    |pos endPos|

    pos := tokenPosition.

    endPos := pos+tokenName size-1.

    self markVariable:v from:pos to:endPos

    "Modified: / 16.4.1998 / 18:49:51 / cg"

!

markVariable:v from:pos to:endPos

    "support for syntaxColoring"

    type := v type.

    (type == #BlockArg

    or:[type == #MethodArg]) ifTrue:[

        self markArgumentIdentifierFrom:pos to:endPos.

        ^ self

    ].

    (type == #BlockVariable

    or:[type == #MethodVariable]) ifTrue:[

        self markLocalIdentifierFrom:pos to:endPos.

        ^ self

    ].

    (type == #GlobalVariable) ifTrue:[

        globalValue isBehavior ifTrue:[

            self markGlobalClassIdentifierFrom:pos to:endPos.

        ] ifFalse:[

            self markGlobalIdentifierFrom:pos to:endPos.

        ].

        ^ self

    ].

    (type == #InstanceVariable) ifTrue:[

        self markInstVarIdentifierFrom:pos to:endPos.

        ^ self

    ].

    self markIdentifierFrom:pos to:endPos.

    "Created: / 16.4.1998 / 18:49:34 / cg"

    "Modified: / 4.3.1999 / 12:56:13 / cg"

! !