Code Inspection and Quick-Fixes in C++
The key features of ReSharper's code analysis are also supported in C++. You can find the detailed information on these features in the corresponding topics of the Code Analysis section. In the main topic of the section, you can also find the feature matrix and check what exactly is supported in C++.
In this topic, you can find some examples of using code analysis features in C++.
By default, code inspection, quick-fixes, and context actions are available in all solution files. If necessary, you can enable these features in external files referenced from solution with the Enable inspections, quick fixes and context actions in files external to the solution checkbox on the page of ReSharper options (Alt+R,,O).
ReSharper's static code analysis detects most of compiler errors and some compiler warnings in C++ files.
Besides, it finds other code issues, which otherwise would be found in runtime. For example, using a virtual method in constructor leads to unexpected behavior as mentioned in this StackOverflow question. ReSharper points at this problem before you even compile:
To find out what kind of code inspections ReSharper provides, check out the full list of ReSharper C++ code inspections.
To learn how to customize code inspection, see Configuring Code Inspection Settings.
Quick-fixes let you automatically resolve most of code issues found with code inspection. If one or more quick-fixes are available for a code issue, you will see the corresponding action indicator when your caret is on the highlighted code. Press Alt+Enter to see and apply the desired fix.
ReSharper provides over 50 quick-fixes for C++. Here are some examples:
Create from usage
If you use an undeclared symbol, ReSharper suggests one or more quick-fixes for creating the symbol based on the usage:
If a member function in a C++ file does not have declaration in the header file, ReSharper helps you create the missing declaration according to the signature of the implementation:
Add missing #include directive
If you use a symbol that is defined in the standard libraries or elsewhere in your solution, ReSharper helps you add the missing
#include directives automatically:
You can use the Show popups for import actions checkbox on the page of ReSharper options (Alt+R,,O) to disable the popup. If the checkbox is not selected, the corresponding action will be available in the action list on Alt+Enter.
Add forward declaration
ReSharper can also generate a forward declaration for an unresolved symbol:
Remove unused #include directives
#include are highlighted and can be easily removed with a quick-fix:
ReSharper detects uninitialized variables and helps initializing them with the default value:
Replace the dot (.) with arrow (->) and vice versa
If the dot
. operator is erroneously applied to a pointer, ReSharper helps you replace it with the arrow
The reverse quick-fix is also available:
Change variable type
If the specified type of a variable or a field does not match to the assigned value, ReSharper provides a quick-fix to use the correct type in the declaration:
Change return type
If a function return type does not match the value it actually returns, ReSharper lets you quickly fix the return type:
If ReSharper detects uninitialized type members, it suggests initializing all members in one fix. You can also use the sub-menu of this fix to generate initializations for specific members.
Making ReSharper ignore specific code
ReSharper allows you to ignore specific files, folders and file masks in different ways. You can configure ignored files on the following options pages:
Navigation by Name commands.to specify files and folders that should be ignored by