Eclipse: What is a better way to find the implementation of a virtual function?
I am now using "Search" to look at every places that have the virtual function name. Apparently it is a very ineffective way.
[Update 1]: Specifically I am reading the code of the liveMedia of live555. I import it as C++ code in Eclipse.
I assume you mean abstract functions.
Right-click on the function and select 'Declarations'.
select function or method and press F3 you will reach at method creation.....
You can see this on the Type hierarchy which can be opened by:
double click on method name
Ctrl + T
or by right clicking on the method name and navigating in the menu.
This opens a class tree showing only classes that implement the method, and if you click on a class it jumps to the implementation for that class.
You have to be in the .hpp file annoyingly to open the Type hierarchy, if you are on the .cpp you have to first jump to the .hpp with Ctrl + Click on the method name.
Related question: Eclipse shortcut to find all children class that override a method
Tested in Eclipse 2020-03 (4.15.0) with this test project.
Related
Is there a keyboard shortcut in Eclipse IDE to add unimplemented methods when inheriting an abstract method from a superclass? It's kinda annoying to always have to click on the class name to do it. Thank you
Ctrl+. then Ctrl1 then Enter should work
Also, you could try to create your single key bindings from these combinations
If you are using Mac, you may use Command + . to iterate to the error line and then Command + 1, then Enter to add unimplemented methods.
First select the className using doubleclick on class name or Ctr+.
then Ctrl+1+enter
Is there an Eclipse shortcut to see all class overriding the method m?
Highlight/select/put-cursor-on the method name and hit Ctrl + T
Obviously limited to the classes defined on the classpath ("build path" in Eclipse terminology)
CTRL + T – Show inheritance tree of the class.
F4 – Show type hierarchy of on a class.
And please refer the following URLs for other eclipse shortcuts.
http://javapapers.com/wp-content/uploads/2012/02/Eclipse-Shortcuts.pdf
http://www.vogella.com/articles/EclipseShortcuts/article.html
While typing in Eclipse (Java) I often have the problem that when I begin to type accessors, the caret jumps down to the beginning of the constructor definition. So in a document like this:
private int mSomeInt;
public
in|public MyClass(){
}
I would like to manually type out the accessor (getter/setter) for mSomeInt, but when I press space after 'public' above, the caret jumps to the beginning of 'public MyClass'.
I often type complete lines to look up and find my methods jumbled with the constructor (like above).
Any help would be appreciated.
Note - this isn't only with accessors but rather any access modifiers that I define before the constructor or another method.
Edit
After unsuccessfully trying Deco's solution below, I've managed to narrow it down a little further.
The problem only happens if I have all the blocks in the file in a collapsed state (ctrl+shift+numPadDivide). I can see the problem is now that the new access modifier I type is then (quickly) collapsed into the below method. i.e. Eclipse is actually taking the first accessor modifier and collapsing everything from there, even though my intention is actually to write a new method.
The only solution I've been able to find is to only edit the source with all the 'fold' elements unfolded.
Under Window -> Preferences -> <Language> (e.g. Java) -> Editor there is a Content Assist menu item where you can configure auto completion and caret placement as well as auto-activation of it and the delay it uses.
Edit:
After your update to the original question I was able to successfully replicate this in Eclipse Indigo. When you have all of the code blocks collapsed it looks like Eclipse assumes that the code you are writing needs to be in that block (rather than as a variable declaration). I'm not sure if this is expected behaviour or not - but the only way around it I've found is to edit the code with the main block open, and then close it after the fact - or turn folding off altogether.
From what I can tell there are various folding plugins/addons that you can get for Eclipse which override the default behaviour and might function better? A quick Google search will be able to get you a list of them quickly.
I'd probably also suggest posting this as an issue on the Eclipse support site for their official answer.
Unfortunately this issue still exists for me in the latest Elcipse version (Kepler).
As the issue only occurs when the document is 'folded', the work around this is to either disable folding in the editor - or disable folding on 'Members' from the :
Preferences -> Java -> Editor -> Folding
When I try to access some class's method; eclipse gets that method but arguments inside that method are replaced by arg0, arg1, arg2...
Example:-
Suppose I have this method in some class named ReadFile.java
#Override
public int readXXX(int start, int end, String xxx) throws IOException {
return 0;
}
When I try to access that method from an instance of class it shows me as follows:
readFile.readXXX(arg0, arg1, arg2);
It becomes hard to identify what I should pass in argument. The same thing also happens for java methods. i.e. when I implement interface all method under that will be generated but arguments in that methods are arg0, arg1.....
Is there any setting I can do prevent this?
I'm using Eclipse Galelio.
Eclipse can't work out the arguments because it can't find the source or javadoc attachments.
Make sure your source is attached.
To check, click on the method call readXXX and press F3 which should open the method declaration. If the source is not attached, Eclipse will say "Source not found" and will allow you to "Attach Source...".
Anyone having the same issue, try performing a Project > Clean, this will delete the old class files, and Eclipse will recompile them in debug mode this time. Worked for me in Indigo 3.7.2
The problem is that your class files lacks debug information embedded in them. JDT doesn't reparse the source files or the javadoc for dependencies, when building the AST for your project, so it doesn't have idea what the name of the parameter is, even when you are able to open the class and clearly see what are the method names.
In order to correct this, you need to recompile your class files with debug information enabled, which makes the class file considerably larger, but unless you are developing for memory-constraint devices, you should be fine.
for those like me who tried to apply one of our colleagues suggestions and unfortunately hasn't worked, please, give a try to check the option "Add variable attributes to generated class files (used by the debugger)" within Window -> Preferences -> Java + Compiler.
Once you've done that, try to build the project again.
Cheers.
I solved this by going to preferences
Java / Content Assist
On this page under "Sorting and Filtering" I unchecked "Hide proposals not visible in the invocation context" now instead of seeing (arg0, arg1, arg2) etc in autocomplete I see (catalog, schemaPattern, tableNamePattern...)
I am using Spring Tools Suite 3.7.2 which runs on the Eclipse Mars 4.5.1 platform.
This link helped me to solve this problem.
1) Right click on your android.jar and select Properties.
2) Select Java Source Attachment. Enter the source directory location (you can also use External Folder… to browse to the directory) and click on “Apply“.
The code names match the following version numbers, along with API levels and NDK releases provided for convenience:
I have a very big class with lots of methods, is it possible to build an interface from this class using Resharper?
Yes.
My shortcut is Ctrl + Shift + R to bring up the refactoring options. Doing this on the class name allows you to" Extract Interface..."
Optionally, you can choose from the menu > ReSharper > Refactor > Extract Interface...
Uh, maybe I'm missing something here (I've never used resharper) but you can extract an interface from a class using the standard VS IDE refactoring tools (at least you can in 2008). Right click the class, select 'Refactor' and then 'Extract Interface'. This will bring up a dialog box where you can select which properties to include.