private Object compileSource()

in src/main/java/org/apache/sling/scripting/sightly/impl/engine/compiled/SlingHTLMasterCompiler.java [305:366]
50 lines of code
10 McCabe index (conditional complexity)

    private Object compileSource(SourceIdentifier sourceIdentifier, String sourceCode) {
        Lock lock;
        final String fqcn = sourceIdentifier.getFullyQualifiedClassName();
        synchronized (compilationLocks) {
            lock = compilationLocks.get(fqcn);
            if (lock == null) {
                lock = new ReentrantLock();
                compilationLocks.put(fqcn, lock);
            }
        }
        lock.lock();
        try {
            if (sightlyEngineConfiguration.keepGenerated()) {
                String path = "/" + fqcn.replace(".", "/") + JAVA_EXTENSION;
                OutputStream os = classLoaderWriter.getOutputStream(path);
                IOUtils.write(sourceCode, os, StandardCharsets.UTF_8);
                IOUtils.closeQuietly(os);
            }
            String[] sourceCodeLines = sourceCode.split("\\r\\n|[\\n\\x0B\\x0C\\r\\u0085\\u2028\\u2029]");
            boolean foundPackageDeclaration = false;
            for (String line : sourceCodeLines) {
                Matcher matcher = Patterns.JAVA_PACKAGE_DECLARATION.matcher(line);
                if (matcher.matches()) {
                    /*
                     * This matching might return false positives like:
                     * // package a.b.c;
                     *
                     * where from a syntactic point of view the source code doesn't have a package declaration and the expectancy is that our
                     * SightlyJavaCompilerService will add one.
                     */
                    foundPackageDeclaration = true;
                    break;
                }
            }

            if (!foundPackageDeclaration) {
                sourceCode = "package " + sourceIdentifier.getPackageName() + ";\n" + sourceCode;
            }

            org.apache.sling.commons.compiler.CompilationUnit
                    compilationUnit = new SightlyCompilationUnit(sourceCode, fqcn);
            long start = System.currentTimeMillis();
            org.apache.sling.commons.compiler.CompilationResult
                    compilationResult = javaCompiler.compile(new org.apache.sling.commons.compiler.CompilationUnit[]{compilationUnit}, options);
            long end = System.currentTimeMillis();
            List<org.apache.sling.commons.compiler.CompilerMessage> errors = compilationResult.getErrors();
            if (errors != null && !errors.isEmpty()) {
                throw new SightlyException(createErrorMsg(errors));
            }
            if (compilationResult.didCompile()) {
                LOGGER.debug("Class {} was compiled in {}ms.", fqcn, end - start);
            }
            /*
             * the class loader might have become dirty, so let the {@link ClassLoaderWriter} decide which class loader to return
             */
            return classLoaderWriter.getClassLoader().loadClass(fqcn).getDeclaredConstructor().newInstance();
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | IOException | NoSuchMethodException | InvocationTargetException e) {
            throw new SightlyException(e);
        } finally {
            lock.unlock();
        }
    }