src/jdk.compiler/share/classes/com/sun/tools/sjavac/options/Options.java - toolchain/jdk/jdk9_langtools - Git at Google

 /*
  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package com.sun.tools.sjavac.options;

 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import com.sun.tools.sjavac.Transformer;

 /**
  * Instances of this class represent values for sjavac command line options.
  */
 public class Options {

     // Output directories
     private Path destDir, genSrcDir, headerDir;

     // Input directories
     private List<SourceLocation> sources = new ArrayList<>();
     private List<SourceLocation> sourceSearchPaths = new ArrayList<>();
     private List<SourceLocation> classSearchPaths = new ArrayList<>();
     private List<SourceLocation> moduleSearchPaths = new ArrayList<>();

     private String logLevel = "info";

     private boolean permitUnidentifiedArtifact = false;
     private boolean permitSourcesInDefaultPackage = false;

     private Path sourceReferenceList;
     private int numCores = 4;
     private String implicitPolicy = "none";
     private List<String> javacArgs = new ArrayList<>();

     private Map<String, Transformer> trRules = new HashMap<>();

     private boolean startServer = false;

     // Server configuration string
     private String serverConf;

     /** Get the policy for implicit classes */
     public String getImplicitPolicy() {
         return implicitPolicy;
     }

     /** Get the path for generated sources (or null if no such path is set) */
     public Path getGenSrcDir() {
         return genSrcDir;
     }

     /** Get the path for the destination directory */
     public Path getDestDir() {
         return destDir;
     }

     /** Get the path for the header directory (or null if no such path is set) */
     public Path getHeaderDir() {
         return headerDir;
     }

     /** Get all source locations for files to be compiled */
     public List<SourceLocation> getSources() {
         return sources;
     }

     /**
      * Get all paths to search for classes in .java format. (Java-files in
      * found here should not be compiled.
      */
     public List<SourceLocation> getSourceSearchPaths() {
         return sourceSearchPaths;
     }

     /** Get all paths to search for classes in. */
     public List<SourceLocation> getClassSearchPath() {
         return classSearchPaths;
     }

     /** Get all paths to search for modules in. */
     public List<SourceLocation> getModuleSearchPaths() {
         return moduleSearchPaths;
     }

     /** Get the log level. */
     public String getLogLevel() {
         return logLevel;
     }

     /** Returns true iff artifacts in the output directories should be kept,
      * even if they would not be generated in a clean build. */
     public boolean isUnidentifiedArtifactPermitted() {
         return permitUnidentifiedArtifact;
     }

     /** Returns true iff sources in the default package should be permitted. */
     public boolean isDefaultPackagePermitted() {
         return permitSourcesInDefaultPackage;
     }

     /** Get the path to the list of reference sources (or null if none is set) */
     public Path getSourceReferenceList() {
         return sourceReferenceList;
     }

     /** Get the number of cores to be used by sjavac */
     public int getNumCores() {
         return numCores;
     }

     /** Returns all arguments relevant to javac but irrelevant to sjavac. */
     public List<String> getJavacArgs() {
         return javacArgs;
     }

     /**
      * Get a map which maps suffixes to transformers (for example
      * ".java" -> CompileJavaPackages)
      */
     public Map<String, Transformer> getTranslationRules() {
         return trRules;
     }

     /** Return true iff a new server should be started */
     public boolean startServerFlag() {
         return startServer;
     }

     /** Return the server configuration string. */
     public String getServerConf() {
         return serverConf;
     }

     /**
      * Parses the given argument array and returns a corresponding Options
      * instance.
      */
     public static Options parseArgs(String... args) {
         Options options = new Options();
         options.new ArgDecoderOptionHelper().traverse(args);
         return options;
     }

     /** Returns true iff a .java file is among the javac arguments */
     public boolean isJavaFilesAmongJavacArgs() {
         for (String javacArg : javacArgs)
             if (javacArg.endsWith(".java"))
                 return true;
         return false;
     }

     /** Returns true iff an @-file is among the javac arguments */
     public boolean isAtFilePresent() {
         for (String javacArg : javacArgs)
             if (javacArg.startsWith("@"))
                 return true;
         return false;
     }

     /**
      * Returns a string representation of the options that affect the result of
      * the compilation. (Used for saving the state of the options used in a
      * previous compile.)
      */
     public String getStateArgsString() {

         // Local utility class for collecting the arguments
         class StateArgs {

             private List<String> args = new ArrayList<>();

             void addArg(Option opt) {
                 args.add(opt.arg);
             }

             void addArg(Option opt, Object val) {
                 addArg(opt);
                 args.add(val.toString());
             }

             void addSourceLocations(Option opt, List<SourceLocation> locs) {
                 for (SourceLocation sl : locs) {
                     for (String pkg : sl.includes) addArg(Option.I, pkg);
                     for (String pkg : sl.excludes) addArg(Option.X, pkg);
                     for (String f : sl.excludedFiles) addArg(Option.XF, f);
                     for (String f : sl.includedFiles) addArg(Option.IF, f);
                     addArg(opt, sl.getPath());
                 }
             }

             String getResult() {
                 String result = "";
                 for (String s : args)
                     result += s + " ";
                 return result.trim();
             }

             public void addAll(Collection<String> toAdd) {
                 args.addAll(toAdd);
             }
         }

         StateArgs args = new StateArgs();

         // Directories
         if (genSrcDir != null)
             args.addArg(Option.S, genSrcDir.normalize());

         if (headerDir != null)
             args.addArg(Option.H, headerDir.normalize());

         if (destDir != null)
             args.addArg(Option.D, destDir.normalize());

         // Source roots
         args.addSourceLocations(Option.SRC, sources);
         args.addSourceLocations(Option.SOURCEPATH, sourceSearchPaths);
         args.addSourceLocations(Option.CLASSPATH,  classSearchPaths);
         args.addSourceLocations(Option.MODULEPATH, moduleSearchPaths);

         // Boolean options
         if (permitSourcesInDefaultPackage)
             args.addArg(Option.PERMIT_SOURCES_WITHOUT_PACKAGE);

         if (permitUnidentifiedArtifact)
             args.addArg(Option.PERMIT_UNIDENTIFIED_ARTIFACTS);

         // Translation rules
         for (Map.Entry<String, Transformer> tr : trRules.entrySet()) {
             String val = tr.getKey() + "=" + tr.getValue().getClass().getName();
             args.addArg(Option.TR, val);
         }

         // Javac args
         args.addAll(javacArgs);

         return args.getResult();
     }


     /** Extract the arguments to be passed on to javac. */
     public String[] prepJavacArgs() {
         List<String> args = new ArrayList<>();

         // Output directories
         args.add("-d");
         args.add(destDir.toString());

         if (getGenSrcDir() != null) {
             args.add("-s");
             args.add(genSrcDir.toString());
         }

         if (headerDir != null) {
             args.add("-h");
             args.add(headerDir.toString());
         }

         // Prep sourcepath
         List<SourceLocation> sourcepath = new ArrayList<>();
         sourcepath.addAll(sources);
         sourcepath.addAll(sourceSearchPaths);
         if (sourcepath.size() > 0) {
             args.add("-sourcepath");
             args.add(concatenateSourceLocations(sourcepath));
         }

         // Prep classpath
         if (classSearchPaths.size() > 0) {
             args.add("-classpath");
             args.add(concatenateSourceLocations(classSearchPaths));
         }

         // This can't be anything but 'none'. Enforced by sjavac main method.
         args.add("-implicit:" + implicitPolicy);

         // Append javac-options (i.e. pass through options not recognized by
         // sjavac to javac.)
         args.addAll(javacArgs);

         return args.toArray(new String[args.size()]);
     }

     // Helper method to join a list of source locations separated by
     // File.pathSeparator
     private static String concatenateSourceLocations(List<SourceLocation> locs) {
         String s = "";
         for (SourceLocation loc : locs)
             s += (s.isEmpty() ? "" : java.io.File.pathSeparator) + loc.getPath();
         return s;
     }

     // OptionHelper that records the traversed options in this Options instance.
     private class ArgDecoderOptionHelper extends OptionHelper {

         List<String> includes, excludes, includeFiles, excludeFiles;
         {
             resetFilters();
         }

         boolean headerProvided = false;
         boolean genSrcProvided = false;

         @Override
         public void reportError(String msg) {
             throw new IllegalArgumentException(msg);
         }

         @Override
         public void sourceRoots(List<Path> paths) {
             sources.addAll(createSourceLocations(paths));
         }

         @Override
         public void exclude(String exclPattern) {
             excludes.add(exclPattern);
         }

         @Override
         public void include(String inclPattern) {
             includes.add(inclPattern);
         }

         @Override
         public void excludeFile(String exclFilePattern) {
             excludeFiles.add(exclFilePattern);
         }

         @Override
         public void includeFile(String inclFilePattern) {
             includeFiles.add(inclFilePattern);
         }

         @Override
         public void addTransformer(String suffix, Transformer tr) {
             if (trRules.containsKey(suffix)) {
                 reportError("More than one transformer specified for " +
                             "suffix " + suffix + ".");
                 return;
             }
             trRules.put(suffix, tr);
         }

         @Override
         public void sourcepath(List<Path> paths) {
             sourceSearchPaths.addAll(createSourceLocations(paths));
         }

         @Override
         public void modulepath(List<Path> paths) {
             moduleSearchPaths.addAll(createSourceLocations(paths));
         }

         @Override
         public void classpath(List<Path> paths) {
             classSearchPaths.addAll(createSourceLocations(paths));
         }

         @Override
         public void numCores(int n) {
             numCores = n;
         }

         @Override
         public void logLevel(String level) {
             logLevel = level;
         }

         @Override
         public void compareFoundSources(Path referenceList) {
             sourceReferenceList = referenceList;
         }

         @Override
         public void permitUnidentifiedArtifacts() {
             permitUnidentifiedArtifact = true;
         }

         @Override
         public void permitDefaultPackage() {
             permitSourcesInDefaultPackage = true;
         }

         @Override
         public void serverConf(String conf) {
             if (serverConf != null)
                 reportError("Can not specify more than one server configuration.");
             else
                 serverConf = conf;
         }

         @Override
         public void implicit(String policy) {
             implicitPolicy = policy;
         }

         @Override
         public void startServerConf(String conf) {
             if (serverConf != null)
                 reportError("Can not specify more than one server configuration.");
             else {
                 startServer = true;
                 serverConf = conf;
             }
         }

         @Override
         public void javacArg(String... arg) {
             javacArgs.addAll(Arrays.asList(arg));
         }

         @Override
         public void destDir(Path dir) {
             if (destDir != null) {
                 reportError("Destination directory already specified.");
                 return;
             }
             destDir = dir.toAbsolutePath();
         }

         @Override
         public void generatedSourcesDir(Path dir) {
             if (genSrcProvided) {
                 reportError("Directory for generated sources already specified.");
                 return;
             }
             genSrcProvided = true;
             genSrcDir = dir.toAbsolutePath();
         }

         @Override
         public void headerDir(Path dir) {
             if (headerProvided) {
                 reportError("Header directory already specified.");
                 return;
             }
             headerProvided = true;
             headerDir = dir.toAbsolutePath();
         }

         private List<SourceLocation> createSourceLocations(List<Path> paths) {
             List<SourceLocation> result = new ArrayList<>();
             for (Path path : paths) {
                 result.add(new SourceLocation(
                         path,
                         includes,
                         excludes,
                         includeFiles,
                         excludeFiles));
             }
             resetFilters();
             return result;
         }

         private void resetFilters() {
             includes = new ArrayList<>();
             excludes = new ArrayList<>();
             includeFiles = new ArrayList<>();
             excludeFiles = new ArrayList<>();
         }
     }

 }
	/*
	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.tools.sjavac.options;

	import java.nio.file.Path;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collection;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	import com.sun.tools.sjavac.Transformer;

	/**
	* Instances of this class represent values for sjavac command line options.
	*/
	public class Options {

	// Output directories
	private Path destDir, genSrcDir, headerDir;

	// Input directories
	private List<SourceLocation> sources = new ArrayList<>();
	private List<SourceLocation> sourceSearchPaths = new ArrayList<>();
	private List<SourceLocation> classSearchPaths = new ArrayList<>();
	private List<SourceLocation> moduleSearchPaths = new ArrayList<>();

	private String logLevel = "info";

	private boolean permitUnidentifiedArtifact = false;
	private boolean permitSourcesInDefaultPackage = false;

	private Path sourceReferenceList;
	private int numCores = 4;
	private String implicitPolicy = "none";
	private List<String> javacArgs = new ArrayList<>();

	private Map<String, Transformer> trRules = new HashMap<>();

	private boolean startServer = false;

	// Server configuration string
	private String serverConf;

	/** Get the policy for implicit classes */
	public String getImplicitPolicy() {
	return implicitPolicy;
	}

	/** Get the path for generated sources (or null if no such path is set) */
	public Path getGenSrcDir() {
	return genSrcDir;
	}

	/** Get the path for the destination directory */
	public Path getDestDir() {
	return destDir;
	}

	/** Get the path for the header directory (or null if no such path is set) */
	public Path getHeaderDir() {
	return headerDir;
	}

	/** Get all source locations for files to be compiled */
	public List<SourceLocation> getSources() {
	return sources;
	}

	/**
	* Get all paths to search for classes in .java format. (Java-files in
	* found here should not be compiled.
	*/
	public List<SourceLocation> getSourceSearchPaths() {
	return sourceSearchPaths;
	}

	/** Get all paths to search for classes in. */
	public List<SourceLocation> getClassSearchPath() {
	return classSearchPaths;
	}

	/** Get all paths to search for modules in. */
	public List<SourceLocation> getModuleSearchPaths() {
	return moduleSearchPaths;
	}

	/** Get the log level. */
	public String getLogLevel() {
	return logLevel;
	}

	/** Returns true iff artifacts in the output directories should be kept,
	* even if they would not be generated in a clean build. */
	public boolean isUnidentifiedArtifactPermitted() {
	return permitUnidentifiedArtifact;
	}

	/** Returns true iff sources in the default package should be permitted. */
	public boolean isDefaultPackagePermitted() {
	return permitSourcesInDefaultPackage;
	}

	/** Get the path to the list of reference sources (or null if none is set) */
	public Path getSourceReferenceList() {
	return sourceReferenceList;
	}

	/** Get the number of cores to be used by sjavac */
	public int getNumCores() {
	return numCores;
	}

	/** Returns all arguments relevant to javac but irrelevant to sjavac. */
	public List<String> getJavacArgs() {
	return javacArgs;
	}

	/**
	* Get a map which maps suffixes to transformers (for example
	* ".java" -> CompileJavaPackages)
	*/
	public Map<String, Transformer> getTranslationRules() {
	return trRules;
	}

	/** Return true iff a new server should be started */
	public boolean startServerFlag() {
	return startServer;
	}

	/** Return the server configuration string. */
	public String getServerConf() {
	return serverConf;
	}

	/**
	* Parses the given argument array and returns a corresponding Options
	* instance.
	*/
	public static Options parseArgs(String... args) {
	Options options = new Options();
	options.new ArgDecoderOptionHelper().traverse(args);
	return options;
	}

	/** Returns true iff a .java file is among the javac arguments */
	public boolean isJavaFilesAmongJavacArgs() {
	for (String javacArg : javacArgs)
	if (javacArg.endsWith(".java"))
	return true;
	return false;
	}

	/** Returns true iff an @-file is among the javac arguments */
	public boolean isAtFilePresent() {
	for (String javacArg : javacArgs)
	if (javacArg.startsWith("@"))
	return true;
	return false;
	}

	/**
	* Returns a string representation of the options that affect the result of
	* the compilation. (Used for saving the state of the options used in a
	* previous compile.)
	*/
	public String getStateArgsString() {

	// Local utility class for collecting the arguments
	class StateArgs {

	private List<String> args = new ArrayList<>();

	void addArg(Option opt) {
	args.add(opt.arg);
	}

	void addArg(Option opt, Object val) {
	addArg(opt);
	args.add(val.toString());
	}

	void addSourceLocations(Option opt, List<SourceLocation> locs) {
	for (SourceLocation sl : locs) {
	for (String pkg : sl.includes) addArg(Option.I, pkg);
	for (String pkg : sl.excludes) addArg(Option.X, pkg);
	for (String f : sl.excludedFiles) addArg(Option.XF, f);
	for (String f : sl.includedFiles) addArg(Option.IF, f);
	addArg(opt, sl.getPath());
	}
	}

	String getResult() {
	String result = "";
	for (String s : args)
	result += s + " ";
	return result.trim();
	}

	public void addAll(Collection<String> toAdd) {
	args.addAll(toAdd);
	}
	}

	StateArgs args = new StateArgs();

	// Directories
	if (genSrcDir != null)
	args.addArg(Option.S, genSrcDir.normalize());

	if (headerDir != null)
	args.addArg(Option.H, headerDir.normalize());

	if (destDir != null)
	args.addArg(Option.D, destDir.normalize());

	// Source roots
	args.addSourceLocations(Option.SRC, sources);
	args.addSourceLocations(Option.SOURCEPATH, sourceSearchPaths);
	args.addSourceLocations(Option.CLASSPATH, classSearchPaths);
	args.addSourceLocations(Option.MODULEPATH, moduleSearchPaths);

	// Boolean options
	if (permitSourcesInDefaultPackage)
	args.addArg(Option.PERMIT_SOURCES_WITHOUT_PACKAGE);

	if (permitUnidentifiedArtifact)
	args.addArg(Option.PERMIT_UNIDENTIFIED_ARTIFACTS);

	// Translation rules
	for (Map.Entry<String, Transformer> tr : trRules.entrySet()) {
	String val = tr.getKey() + "=" + tr.getValue().getClass().getName();
	args.addArg(Option.TR, val);
	}

	// Javac args
	args.addAll(javacArgs);

	return args.getResult();
	}


	/** Extract the arguments to be passed on to javac. */
	public String[] prepJavacArgs() {
	List<String> args = new ArrayList<>();

	// Output directories
	args.add("-d");
	args.add(destDir.toString());

	if (getGenSrcDir() != null) {
	args.add("-s");
	args.add(genSrcDir.toString());
	}

	if (headerDir != null) {
	args.add("-h");
	args.add(headerDir.toString());
	}

	// Prep sourcepath
	List<SourceLocation> sourcepath = new ArrayList<>();
	sourcepath.addAll(sources);
	sourcepath.addAll(sourceSearchPaths);
	if (sourcepath.size() > 0) {
	args.add("-sourcepath");
	args.add(concatenateSourceLocations(sourcepath));
	}

	// Prep classpath
	if (classSearchPaths.size() > 0) {
	args.add("-classpath");
	args.add(concatenateSourceLocations(classSearchPaths));
	}

	// This can't be anything but 'none'. Enforced by sjavac main method.
	args.add("-implicit:" + implicitPolicy);

	// Append javac-options (i.e. pass through options not recognized by
	// sjavac to javac.)
	args.addAll(javacArgs);

	return args.toArray(new String[args.size()]);
	}

	// Helper method to join a list of source locations separated by
	// File.pathSeparator
	private static String concatenateSourceLocations(List<SourceLocation> locs) {
	String s = "";
	for (SourceLocation loc : locs)
	s += (s.isEmpty() ? "" : java.io.File.pathSeparator) + loc.getPath();
	return s;
	}

	// OptionHelper that records the traversed options in this Options instance.
	private class ArgDecoderOptionHelper extends OptionHelper {

	List<String> includes, excludes, includeFiles, excludeFiles;
	{
	resetFilters();
	}

	boolean headerProvided = false;
	boolean genSrcProvided = false;

	@Override
	public void reportError(String msg) {
	throw new IllegalArgumentException(msg);
	}

	@Override
	public void sourceRoots(List<Path> paths) {
	sources.addAll(createSourceLocations(paths));
	}

	@Override
	public void exclude(String exclPattern) {
	excludes.add(exclPattern);
	}

	@Override
	public void include(String inclPattern) {
	includes.add(inclPattern);
	}

	@Override
	public void excludeFile(String exclFilePattern) {
	excludeFiles.add(exclFilePattern);
	}

	@Override
	public void includeFile(String inclFilePattern) {
	includeFiles.add(inclFilePattern);
	}

	@Override
	public void addTransformer(String suffix, Transformer tr) {
	if (trRules.containsKey(suffix)) {
	reportError("More than one transformer specified for " +
	"suffix " + suffix + ".");
	return;
	}
	trRules.put(suffix, tr);
	}

	@Override
	public void sourcepath(List<Path> paths) {
	sourceSearchPaths.addAll(createSourceLocations(paths));
	}

	@Override
	public void modulepath(List<Path> paths) {
	moduleSearchPaths.addAll(createSourceLocations(paths));
	}

	@Override
	public void classpath(List<Path> paths) {
	classSearchPaths.addAll(createSourceLocations(paths));
	}

	@Override
	public void numCores(int n) {
	numCores = n;
	}

	@Override
	public void logLevel(String level) {
	logLevel = level;
	}

	@Override
	public void compareFoundSources(Path referenceList) {
	sourceReferenceList = referenceList;
	}

	@Override
	public void permitUnidentifiedArtifacts() {
	permitUnidentifiedArtifact = true;
	}

	@Override
	public void permitDefaultPackage() {
	permitSourcesInDefaultPackage = true;
	}

	@Override
	public void serverConf(String conf) {
	if (serverConf != null)
	reportError("Can not specify more than one server configuration.");
	else
	serverConf = conf;
	}

	@Override
	public void implicit(String policy) {
	implicitPolicy = policy;
	}

	@Override
	public void startServerConf(String conf) {
	if (serverConf != null)
	reportError("Can not specify more than one server configuration.");
	else {
	startServer = true;
	serverConf = conf;
	}
	}

	@Override
	public void javacArg(String... arg) {
	javacArgs.addAll(Arrays.asList(arg));
	}

	@Override
	public void destDir(Path dir) {
	if (destDir != null) {
	reportError("Destination directory already specified.");
	return;
	}
	destDir = dir.toAbsolutePath();
	}

	@Override
	public void generatedSourcesDir(Path dir) {
	if (genSrcProvided) {
	reportError("Directory for generated sources already specified.");
	return;
	}
	genSrcProvided = true;
	genSrcDir = dir.toAbsolutePath();
	}

	@Override
	public void headerDir(Path dir) {
	if (headerProvided) {
	reportError("Header directory already specified.");
	return;
	}
	headerProvided = true;
	headerDir = dir.toAbsolutePath();
	}

	private List<SourceLocation> createSourceLocations(List<Path> paths) {
	List<SourceLocation> result = new ArrayList<>();
	for (Path path : paths) {
	result.add(new SourceLocation(
	path,
	includes,
	excludes,
	includeFiles,
	excludeFiles));
	}
	resetFilters();
	return result;
	}

	private void resetFilters() {
	includes = new ArrayList<>();
	excludes = new ArrayList<>();
	includeFiles = new ArrayList<>();
	excludeFiles = new ArrayList<>();
	}
	}

	}