[jdt-dev] About the rewrite problem

["Yu Zhang" <upupsky@xxxxxxxxx>]

Hi, all,

 

I am new to JDT develop. I want to write a program that will behave in the following way :

 

Input : line number, the start position, end position of the statement.

 

Action: add the statement "System.out.println("Hello");" right before the statement above.

 

The procedure should be like this:

1) parse the source code and find the statement that whose line number, state position and end position is as request.

 

2) perform a rewrite action, add "System.out.println("Hello");"  right before that statement.

 

3) store the change to the file.

 

For example,

given line number=6, start position=2, end position=6;

then after parse, we know the statement a=10;

and after that we should perform the rewrite.

 

Could you tell me how should I do?

Is there any example for me to learn from?

 

Best wishes,

 

Zhang Yu

 

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                                          Zhang Yu