protected Commandline setupJavacCommandlineSwitches()

in src/main/org/apache/tools/ant/taskdefs/compilers/DefaultCompilerAdapter.java [258:393]
113 lines of code
31 McCabe index (conditional complexity)

    protected Commandline setupJavacCommandlineSwitches(final Commandline cmd,
                                                        final boolean useDebugLevel) {
        final Path classpath = getCompileClasspath();
        // For -sourcepath, use the "sourcepath" value if present.
        // Otherwise default to the "srcdir" value.
        Path sourcepath;
        if (compileSourcepath != null) {
            sourcepath = compileSourcepath;
        } else {
            sourcepath = src;
        }

        final String memoryParameterPrefix = assumeJava1_2Plus() ? "-J-X" : "-J-";

        if (memoryInitialSize != null) {
            if (!attributes.isForkedJavac()) {
                attributes.log(
                    "Since fork is false, ignoring memoryInitialSize setting.",
                    Project.MSG_WARN);
            } else {
                cmd.createArgument().setValue(memoryParameterPrefix
                                              + "ms" + memoryInitialSize);
            }
        }

        if (memoryMaximumSize != null) {
            if (!attributes.isForkedJavac()) {
                attributes.log(
                    "Since fork is false, ignoring memoryMaximumSize setting.",
                    Project.MSG_WARN);
            } else {
                cmd.createArgument().setValue(memoryParameterPrefix
                                              + "mx" + memoryMaximumSize);
            }
        }

        if (attributes.getNowarn()) {
            cmd.createArgument().setValue("-nowarn");
        }

        if (deprecation) {
            cmd.createArgument().setValue("-deprecation");
        }

        if (destDir != null) {
            cmd.createArgument().setValue("-d");
            cmd.createArgument().setFile(destDir);
        }

        // Just add "sourcepath" to classpath (for JDK1.1)
        // as well as "bootclasspath" and "extdirs"
        if (!assumeJava1_2Plus()) {
            final Path cp = new Path(project);
            Optional.ofNullable(getBootClassPath()).ifPresent(cp::append);

            if (extdirs != null) {
                cp.addExtdirs(extdirs);
            }
            cp.append(classpath);
            cp.append(sourcepath);

            cmd.createArgument().setValue("-classpath");
            cmd.createArgument().setPath(cp);
        } else {
            if (!classpath.isEmpty()) {
              cmd.createArgument().setValue("-classpath");
              cmd.createArgument().setPath(classpath);
            }

            // If the buildfile specifies sourcepath="", then don't
            // output any sourcepath.
            if (sourcepath.size() > 0) {
                cmd.createArgument().setValue("-sourcepath");
                cmd.createArgument().setPath(sourcepath);
            }
            if (release == null || !assumeJava9Plus()) {
                if (target != null) {
                    cmd.createArgument().setValue("-target");
                    cmd.createArgument().setValue(target);
                }

                final Path bp = getBootClassPath();
                if (!bp.isEmpty()) {
                    cmd.createArgument().setValue("-bootclasspath");
                    cmd.createArgument().setPath(bp);
                }
            }

            if (extdirs != null && !extdirs.isEmpty()) {
                cmd.createArgument().setValue("-extdirs");
                cmd.createArgument().setPath(extdirs);
            }
        }

        if (encoding != null) {
            cmd.createArgument().setValue("-encoding");
            cmd.createArgument().setValue(encoding);
        }
        if (debug) {
            if (useDebugLevel && assumeJava1_2Plus()) {
                final String debugLevel = attributes.getDebugLevel();
                if (debugLevel != null) {
                    cmd.createArgument().setValue("-g:" + debugLevel);
                } else {
                    cmd.createArgument().setValue("-g");
                }
            } else {
                cmd.createArgument().setValue("-g");
            }
        } else if (getNoDebugArgument() != null) {
            cmd.createArgument().setValue(getNoDebugArgument());
        }
        if (optimize) {
            cmd.createArgument().setValue("-O");
        }

        if (depend) {
        	if (assumeJava1_3Plus()) {
        		attributes.log(
                        "depend attribute is not supported by the modern compiler",
                        Project.MSG_WARN);
        	} else if (assumeJava1_2Plus()) {
        		cmd.createArgument().setValue("-Xdepend");
        	} else { //java 1.1
                cmd.createArgument().setValue("-depend");
            }
        }

        if (verbose) {
            cmd.createArgument().setValue("-verbose");
        }

        addCurrentCompilerArgs(cmd);

        return cmd;
    }