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Custom coloring for block of code [message #1819468]

Thu, 16 January 2020 05:20

Virag Purnam

Messages: 142
Registered: June 2014

Senior Member

Hi,

Requirement is to custom color the block of code.
How can I achieve this?

Consider the below example.
<CodeBlock> which are under if(false) will not be executed. Requirement is to mark those as grayed out or any custom color. User will know that block will not be executed.


  if(true){
  
    <Code Block>

   }

   if(false){

    <Code Block>
   }

Please guide me how to proceed. Some pointers will be helpful.

Thanks and regards,
Virag Purnam

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Re: Custom coloring for block of code [message #1819469 is a reply to message #1819468]

Thu, 16 January 2020 05:23

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

please have a look at semantic highlighting

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Custom coloring for block of code [message #1819471 is a reply to message #1819469]

Thu, 16 January 2020 06:15

Tamas Miklossy

Messages: 157
Registered: February 2016

Senior Member

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Re: Custom coloring for block of code [message #1819472 is a reply to message #1819469]

Thu, 16 January 2020 06:20

Virag Purnam

Messages: 142
Registered: June 2014

Senior Member

Thanks Mr. Christian Dietrich and Mr. Tamas Miklossy for the pointer.
I will look at semantic highlighting.

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Re: Custom coloring for block of code [message #1819534 is a reply to message #1819472]

Fri, 17 January 2020 04:52

Virag Purnam

Messages: 142
Registered: June 2014

Senior Member

Hi,

Semantic highlighting gets called during the start of application.
I want to achieve this dynamically.
When ever any 'if statement' is false, I want to gray out the code block present inside that.
Is there any class which I can refer?

Thanks and regards,
Virag

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Re: Custom coloring for block of code [message #1819535 is a reply to message #1819534]

Fri, 17 January 2020 05:26

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

I cannot follow you. Semantic highlighting is called when you type in the editor.
Please explain what you do

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Custom coloring for block of code [message #1819536 is a reply to message #1819535]

Fri, 17 January 2020 06:05

Virag Purnam

Messages: 142
Registered: June 2014

Senior Member

Hi Mr. Christian Dietrich,

I have implemented TokenSource interface.
In the method nextToken(), I am checking IF condition.
If condition is false, I am making all the token present in IF block as SL comment, by changing token type.

But in editor, it does not appear as SL comment color. It retains its original color.

Thanks and regards,
Virag

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Re: Custom coloring for block of code [message #1819537 is a reply to message #1819536]

Fri, 17 January 2020 06:06

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

this makes no sense. this is not semantic highlighting

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Custom coloring for block of code [message #1819540 is a reply to message #1819537]

Fri, 17 January 2020 06:40

Tamas Miklossy

Messages: 157
Registered: February 2016

Senior Member

You can find an example for semantic highlighting in the GEF DOT project:
https://github.com/eclipse/gef/blob/master/org.eclipse.gef.dot.ui/src/org/eclipse/gef/dot/internal/ui/language/highlighting/DotSemanticHighlightingCalculator.java

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Re: Custom coloring for block of code [message #1819559 is a reply to message #1819540]

Fri, 17 January 2020 10:38

Virag Purnam

Messages: 142
Registered: June 2014

Senior Member

Thanks Mr. Tamas Miklossy for the example. I will check, if I get something out of this.
Thanks Mr. Christian Dietrich. Yes requirement does not look nice. Just wanted to give try and check the feasibility.

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