Eclipse插件 ASTView
1.Open the AST view
◦from the view menu: Window > Show View > Other..., Java > AST View
◦via shortcut: Alt+Shift+Q, A
2.Open a Java file in the editor
3.Click on 'Show AST of active editor' () to populate the view: The view shows the AST of the file opened in the editor and will also reveal the element corresponding to the current text selection
4.Enable 'Link with editor' () to automatically track the active editor and the selection in the active editor.
5.Double click on AST nodes to get the corresponding element revealed in the editor.
6.Double click again to see the 'extended range' of a node, that means the range including all comments associated with it (comment mapper heuristic).
7.Open the context menu on a binding to add it to the comparison tray
8.When the AST's underlying document has been changed use 'Refresh' () to update the AST.
