Sotoarc is a commercial static code analysis

Static code analysis

Static program analysis is the analysis of computer software that is performed without actually executing programs built from that software In most cases the analysis is performed on some version of the source code and in the other cases some form of the object code...

 tool for software architects. It graphically visualizes the static structure of software systems written in Java, C# or in C++

C++

C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. It is regarded as an intermediate-level language, as it comprises a combination of both high-level and low-level language features. It was developed by Bjarne Stroustrup starting in 1979 at Bell...

 code. The code structure is displayed as hierarchies (trees) of modules, packages and files.
Besides the user can describe by graphical means the specified software architecture of a software system. By doing so the tool is immediately comparing this intended architecture with the implemented code structure and is highlighting all architecture violations (i.e. all code references and dependencies which do not correspond to the intended architecture.)

As an add-on tool to Sotoarc an Eclipse

Eclipse (software)

Eclipse is a multi-language software development environment comprising an integrated development environment and an extensible plug-in system...

plug-in is able to do the architecture conformance check directly in Eclipse. This plug-in informs the developer immediately when he has just implemented code which is violating architecture constraints.