I have not in anyway extensively tested this grammar, in fact it is barely tested,. It has not been optimized in anyway, my main aim was to get a parser that. Lookahead may not be optimum at choice points and may even be insufficient at. I choose to err on the side of not optimum if I made a choice at all.
If you use this grammar, I would appreciate hearing from you. I will try to maintain. In that regards, I am. Insert the appropriate code to enable C source trees from this grammar. Chris Findlay for the patch. FileInputStream args[0] ;.
DeclarationSpecifiers [ InitDeclaratorList ] ";". TRUE ;. FALSE ;. ParameterList ["," " You now have a NetBeans parser. We need to register it so that it can be used. We also need to create a. Create a new language class, which provides a central mechanism for registering language features, in addition to the layer mechanism above.
You can compile and run the module. Now you will create a first client of your SJParser. This client task will show syntax errors in the NetBeans editor sidebar, also known as its "gutter". Before working on the related code, we need to make some modifications to the generated parser. The parser throws a ParseException when it finds the first error in the source code. This is the default behavior of parsers generated by JavaCC. But in the NetBeans editor we need to detect more than just one syntax error.
Therefore, we need to add some simple error recovery to the parser before integrating the NetBeans error parsing code with it. The tweaks below should both be done in Java1. We have added some very basic error recovery to our parser so that we can display some syntax errors in the NetBeans editor in the next section. This task consists of three standard steps:.
Create a factory, i. Create a task, i. When you install the module into your application and make a syntax error in a SJ file, you should see the error highlighting in the sidebar of the NetBeans editor:.
Add a dependency on the " Editor Indentation " module. Create a new IndentTask :. Create a new IndentTask. Factory :. When you install the module into the application, open an SJ file, and press Enter, you will see a message in the status bar, showing you that the indentation integration is working correctly. If you have not already done so in the previous section, add a dependency on the " Editor Indentation " module.
Create a new ReformatTask :. Create a new ReformatTask. When you install the module into the application, open an SJ file, and choose Source Format Alt-Shift-F , you will see a message in the status bar, showing you that the extension point is working correctly.
When the user selects an opening brace, the closing brace should be highlighted, and vice versa. Moreover, when Ctrl-[ is pressed on the keyboard, the cursor should move back and forth between matching braces.
This feature is especially useful if your language is likely to be used to create deeply nested code structures. In the first screenshot, the opening brace is selected, which results in it being highlighted, together with the closing brace, so that you can see where a code phrase or code block begins and ends and you can toggle between them by pressing Ctrl-[:.
Similarly, here another code block is made visible by selecting either the opening or closing brace, causing the matching brace to also be highlighted, and enabling the cursor to be toggled between the matching braces via Ctrl-[:. Add a dependency on the " Editor Brace Matching " module. Create a new BracesMatcherFactory :. Create a task, i.
When you install the module into your application and make a syntax error in a SJ file, you should see the error highlighting in the sidebar of the NetBeans editor:. Add a dependency on the " Editor Indentation " module. Create a new IndentTask :. Create a new IndentTask. Factory :. When you install the module into the application, open an SJ file, and press Enter, you will see a message in the status bar, showing you that the indentation integration is working correctly.
If you have not already done so in the previous section, add a dependency on the " Editor Indentation " module. Create a new ReformatTask :.
Create a new ReformatTask. When you install the module into the application, open an SJ file, and choose Source Format Alt-Shift-F , you will see a message in the status bar, showing you that the extension point is working correctly.
When the user selects an opening brace, the closing brace should be highlighted, and vice versa. Moreover, when Ctrl-[ is pressed on the keyboard, the cursor should move back and forth between matching braces. This feature is especially useful if your language is likely to be used to create deeply nested code structures.
In the first screenshot, the opening brace is selected, which results in it being highlighted, together with the closing brace, so that you can see where a code phrase or code block begins and ends and you can toggle between them by pressing Ctrl-[:.
Similarly, here another code block is made visible by selecting either the opening or closing brace, causing the matching brace to also be highlighted, and enabling the cursor to be toggled between the matching braces via Ctrl-[:.
Add a dependency on the " Editor Brace Matching " module. Create a new BracesMatcherFactory :. One of these is used in the code above. When you install the module into the application, open an SJ file, and select a brace, you should see that the brace is highlighted, together with its matching brace.
Press Ctrl-[ to toggle between matching braces. The " Editor Code Folding " module provides the functionality you need to implement for creating your own code folds. Add a dependency on the " Editor Code Folding " module. Create a new FoldManager :. Create a new FoldManagerFactory :. When you install the module into the application, open an SJ file, and type a multiline comment at the top of the file, as shown at the start of this section, a code fold will automatically appear around the comment.
For more information about creating and developing NetBeans modules, see the following resources:. Apache NetBeans. Latest release. Prior to starting to work on this tutorial, you must have completed the JavaCC Lexer Generator Integration Tutorial , since that tutorial shows how to create the module structure, file type support, and lexer used in the instructions that follow. In your project structure, you should now see your new package and new file:.
In your module, create a new package named org. Reader; import java. StringReader; import java. Level; import java. Logger; import javax.
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