private Set computeStaleSources()

in lightning-maven-plugin/src/main/java/org/apache/directmemory/lightning/maven/AbstractCompilerMojo.java [708:764]
46 lines of code
6 McCabe index (conditional complexity)

    private Set<File> computeStaleSources( CompilerConfiguration compilerConfiguration, Compiler compiler,
                                           SourceInclusionScanner scanner )
        throws MojoExecutionException, CompilerException
    {
        CompilerOutputStyle outputStyle = compiler.getCompilerOutputStyle();

        SourceMapping mapping;

        File outputDirectory;

        if ( outputStyle == CompilerOutputStyle.ONE_OUTPUT_FILE_PER_INPUT_FILE )
        {
            mapping =
                new SuffixMapping( compiler.getInputFileEnding( compilerConfiguration ),
                                   compiler.getOutputFileEnding( compilerConfiguration ) );

            outputDirectory = getOutputDirectory();
        }
        else if ( outputStyle == CompilerOutputStyle.ONE_OUTPUT_FILE_FOR_ALL_INPUT_FILES )
        {
            mapping =
                new SingleTargetSourceMapping( compiler.getInputFileEnding( compilerConfiguration ),
                                               compiler.getOutputFile( compilerConfiguration ) );

            outputDirectory = buildDirectory;
        }
        else
        {
            throw new MojoExecutionException( "Unknown compiler output style: '" + outputStyle + "'." );
        }

        scanner.addSourceMapping( mapping );

        Set<File> staleSources = new HashSet<File>();

        for ( String sourceRoot : getCompileSourceRoots() )
        {
            File rootFile = new File( sourceRoot );

            if ( !rootFile.isDirectory() )
            {
                continue;
            }

            try
            {
                staleSources.addAll( scanner.getIncludedSources( rootFile, outputDirectory ) );
            }
            catch ( InclusionScanException e )
            {
                throw new MojoExecutionException( "Error scanning source root: \'" + sourceRoot + "\' "
                    + "for stale files to recompile.", e );
            }
        }

        return staleSources;
    }