File Metrics
The following metrics are generated for source files in the project source code. The inclusion metrics, measuring aspects of #include preprocessor directives, are omitted for Java files.
Size Metrics
| Comment Ratio | Ratio of the lines of comments to the lines of source code in the file. |
| Declarations in File | Number of top-level declarations in the file, including types, variables, functions and macro defines. Not applicable for Java. |
| File Size (bytes) | Size of the file, in bytes. |
| Functions in File | Number of functions defined in the file. |
| Lines in File | Number of lines in the file. |
| Lines of Source Code | Number of lines in the file that have source code, i.e. all lines except empty lines, lines that have just comments, and lines omitted because of preprocessor conditions. |
| Lines of Comments | Number of lines of comments in the file. |
| Number of Statements | Number of statements in the file. An individual statement can extend over multiple lines. |
| Variables in File | Number of variables and parameters defined in the file. |
| For local variables and parameters to be counted, data must be collected with the -locals option enabled. Not applicable for Java. |
Complexity Metrics
| Halstead Intelligent Content | Language-independent measure of the amount of content (complexity) of the file (Halstead I). |
| Halstead Mental Effort | Measure of the number of elemental mental discriminations necessary to create, or understand, the file (Halstead E). |
| Halstead Program Volume | Measure of the information content of the file (Halstead V). |
| Halstead Program Difficulty | Measure of how compactly the file implements its algorithms (Halstead D). This is the inverse of the Halstead Program Level (of abstraction). |
| McCabe Average Complexity | Average cyclomatic complexity for all functions defined in the file. |
| McCabe Maximum Complexity | Maximum cyclomatic complexity for any function defined in the file. |
| McCabe Total Complexity | Total cyclomatic complexity for all functions defined in the file. |
| Maintainability Index | Measure of the maintainability of the file (Welker MI). |
Inclusion Metrics
| Inclusion metrics apply only to C and C++ files. |
| Directly Included-By Files | Number of header files in the project database which directly include the file. |
| Directly Included Files | Number of header files in the project database which are directly included by the file. |
| Included Lines | Number of lines in header files in the project database which are transitively included by the file. |
| Trans Included-By Files | Number of header files in the project database which transitively include the file. |
| Trans Included Files | Number of header files in the project database which are transitively included by the file. |
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