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Direct implementation of several refactorings is performed by others by using its source browsing capabilities. Refactoring, according to Martin Fowler, is a disciplined technique used to restructure codes.

There are those who has directly implemented refactorings for C language and for Java language as well. In order to specifically identify which belonged to a specific group, a summary is provided below:

For the C language refactoring, the following are covered:

• Add Parameter
• Exchange Parameter
• Extract Function
• Extract Macro
• Remove Parameter
• Rename Parameter
• Rename Macro
• Rename Variable
• Rename Function

• Rename Field

For the Java language refactoring, the list includes:

• Add Parameter
• Exchange Parameter
• Extract Method
• Remove Parameter
• Rename Parameter
• Rename Class
• Rename Field
• Rename Method