How To Do Syntax Highlighting

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How To Do Syntax Highlighting
How To Do Syntax Highlighting

Video: How To Do Syntax Highlighting

Video: How To Do Syntax Highlighting
Video: How to Program Code Syntax Highlighter Using JavaScript 2024, November
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When writing code, regardless of the programming language, it is very convenient when the reserved words of the language are highlighted in a different color. Some may find it convenient to colorize the opening and closing brackets in different colors. It's also worth noting that many people like to indent to show the hierarchy of the code.

How to do syntax highlighting
How to do syntax highlighting

Instructions

Step 1

No matter how hard users try, not every developer environment has syntax highlighting that will satisfy any request. In Delphi, you can do such highlighting yourself using the RichEdit component. List the operators to be automatically highlighted. You might want to make sure to highlight statements such as if, then, else, begin, end, for, to and others. Make a complete list of similar words.

Step 2

To highlight a list of operators, write a simple function to iterate over the text of the code. To do this, use a repeat - until loop and a for statement. Referring to the RichEdit component, you can call the FindText function inherent in it, and the SelStart, SelLength, SelAttributes and others components. Use the following properties of the Paragraph type to write the logic of the code to implement your own highlighting of text elements: Alignment (for text alignment), Numbering (controls markers), TabCount (number of tab stops), and others. Each Paragraph element has its own parameters.

Step 3

Edit the written code and check with the built-in Delphi debugger. Try out the written code snippet on your own text. Make changes if you missed some of the processing elements while developing the functions. On the Internet, you can find ready-made snippets of code written specifically to accomplish certain goals. It is quite difficult to develop syntax highlighting, given the fact that ready-made ones are quite difficult to find. As a rule, there are no optimal options.

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