Examples with Closure groovy.lang.Closure used on opensource projects

Example 56 with Closure

use of groovy.lang.Closure in project groovy-core by groovy.

the class ResourceGroovyMethods method traverse.

private static FileVisitResult traverse(final File self, final Map<String, Object> options, final Closure closure, final int maxDepth) throws FileNotFoundException, IllegalArgumentException {
    checkDir(self);
    final Closure pre = (Closure) options.get("preDir");
    final Closure post = (Closure) options.get("postDir");
    final FileType type = (FileType) options.get("type");
    final Object filter = options.get("filter");
    final Object nameFilter = options.get("nameFilter");
    final Object excludeFilter = options.get("excludeFilter");
    final Object excludeNameFilter = options.get("excludeNameFilter");
    final Closure sort = (Closure) options.get("sort");
    final File[] origFiles = self.listFiles();
    // null check because of http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4803836
    if (origFiles != null) {
        List<File> files = Arrays.asList(origFiles);
        if (sort != null)
            files = DefaultGroovyMethods.sort(files, sort);
        for (File file : files) {
            if (file.isDirectory()) {
                if (type != FileType.FILES) {
                    if (closure != null && notFiltered(file, filter, nameFilter, excludeFilter, excludeNameFilter)) {
                        Object closureResult = closure.call(file);
                        if (closureResult == FileVisitResult.SKIP_SIBLINGS)
                            break;
                        if (closureResult == FileVisitResult.TERMINATE)
                            return FileVisitResult.TERMINATE;
                    }
                }
                if (maxDepth != 0) {
                    Object preResult = null;
                    if (pre != null) {
                        preResult = pre.call(file);
                    }
                    if (preResult == FileVisitResult.SKIP_SIBLINGS)
                        break;
                    if (preResult == FileVisitResult.TERMINATE)
                        return FileVisitResult.TERMINATE;
                    if (preResult != FileVisitResult.SKIP_SUBTREE) {
                        FileVisitResult terminated = traverse(file, options, closure, maxDepth - 1);
                        if (terminated == FileVisitResult.TERMINATE)
                            return terminated;
                    }
                    Object postResult = null;
                    if (post != null) {
                        postResult = post.call(file);
                    }
                    if (postResult == FileVisitResult.SKIP_SIBLINGS)
                        break;
                    if (postResult == FileVisitResult.TERMINATE)
                        return FileVisitResult.TERMINATE;
                }
            } else if (type != FileType.DIRECTORIES) {
                if (closure != null && notFiltered(file, filter, nameFilter, excludeFilter, excludeNameFilter)) {
                    Object closureResult = closure.call(file);
                    if (closureResult == FileVisitResult.SKIP_SIBLINGS)
                        break;
                    if (closureResult == FileVisitResult.TERMINATE)
                        return FileVisitResult.TERMINATE;
                }
            }
        }
    }
    return FileVisitResult.CONTINUE;
}

Example 57 with Closure

use of groovy.lang.Closure in project groovy-core by groovy.

the class ResourceGroovyMethods method traverse.

/**
 * Invokes <code>closure</code> for each descendant file in this directory tree.
 * Sub-directories are recursively traversed as found.
 * The traversal can be adapted by providing various options in the <code>options</code> Map according
 * to the following keys:<dl>
 * <dt>type</dt><dd>A {@link groovy.io.FileType} enum to determine if normal files or directories or both are processed</dd>
 * <dt>preDir</dt><dd>A {@link groovy.lang.Closure} run before each directory is processed and optionally returning a {@link groovy.io.FileVisitResult} value
 * which can be used to control subsequent processing.</dd>
 * <dt>preRoot</dt><dd>A boolean indicating that the 'preDir' closure should be applied at the root level</dd>
 * <dt>postDir</dt><dd>A {@link groovy.lang.Closure} run after each directory is processed and optionally returning a {@link groovy.io.FileVisitResult} value
 * which can be used to control subsequent processing.</dd>
 * <dt>postRoot</dt><dd>A boolean indicating that the 'postDir' closure should be applied at the root level</dd>
 * <dt>visitRoot</dt><dd>A boolean indicating that the given closure should be applied for the root dir
 * (not applicable if the 'type' is set to {@link groovy.io.FileType#FILES})</dd>
 * <dt>maxDepth</dt><dd>The maximum number of directory levels when recursing
 * (default is -1 which means infinite, set to 0 for no recursion)</dd>
 * <dt>filter</dt><dd>A filter to perform on traversed files/directories (using the {@link DefaultGroovyMethods#isCase(java.lang.Object, java.lang.Object)} method). If set,
 * only files/dirs which match are candidates for visiting.</dd>
 * <dt>nameFilter</dt><dd>A filter to perform on the name of traversed files/directories (using the {@link DefaultGroovyMethods#isCase(java.lang.Object, java.lang.Object)} method). If set,
 * only files/dirs which match are candidates for visiting. (Must not be set if 'filter' is set)</dd>
 * <dt>excludeFilter</dt><dd>A filter to perform on traversed files/directories (using the {@link DefaultGroovyMethods#isCase(java.lang.Object, java.lang.Object)} method).
 * If set, any candidates which match won't be visited.</dd>
 * <dt>excludeNameFilter</dt><dd>A filter to perform on the names of traversed files/directories (using the {@link DefaultGroovyMethods#isCase(java.lang.Object, java.lang.Object)} method).
 * If set, any candidates which match won't be visited. (Must not be set if 'excludeFilter' is set)</dd>
 * <dt>sort</dt><dd>A {@link groovy.lang.Closure} which if set causes the files and subdirectories for each directory to be processed in sorted order.
 * Note that even when processing only files, the order of visited subdirectories will be affected by this parameter.</dd>
 * </dl>
 * This example prints out file counts and size aggregates for groovy source files within a directory tree:
 * <pre>
 * def totalSize = 0
 * def count = 0
 * def sortByTypeThenName = { a, b ->
 *     a.isFile() != b.isFile() ? a.isFile() <=> b.isFile() : a.name <=> b.name
 * }
 * rootDir.traverse(
 *         type         : FILES,
 *         nameFilter   : ~/.*\.groovy/,
 *         preDir       : { if (it.name == '.svn') return SKIP_SUBTREE },
 *         postDir      : { println "Found $count files in $it.name totalling $totalSize bytes"
 *                         totalSize = 0; count = 0 },
 *         postRoot     : true
 *         sort         : sortByTypeThenName
 * ) {it -> totalSize += it.size(); count++ }
 * </pre>
 *
 * @param self    a File
 * @param options a Map of options to alter the traversal behavior
 * @param closure the Closure to invoke on each file/directory and optionally returning a {@link groovy.io.FileVisitResult} value
 *                which can be used to control subsequent processing
 * @throws FileNotFoundException    if the given directory does not exist
 * @throws IllegalArgumentException if the provided File object does not represent a directory or illegal filter combinations are supplied
 * @see DefaultGroovyMethods#sort(java.util.Collection, groovy.lang.Closure)
 * @see groovy.io.FileVisitResult
 * @see groovy.io.FileType
 * @since 1.7.1
 */
public static void traverse(final File self, final Map<String, Object> options, @ClosureParams(value = SimpleType.class, options = "java.io.File") final Closure closure) throws FileNotFoundException, IllegalArgumentException {
    Number maxDepthNumber = DefaultGroovyMethods.asType(options.remove("maxDepth"), Number.class);
    int maxDepth = maxDepthNumber == null ? -1 : maxDepthNumber.intValue();
    Boolean visitRoot = DefaultGroovyMethods.asType(get(options, "visitRoot", false), Boolean.class);
    Boolean preRoot = DefaultGroovyMethods.asType(get(options, "preRoot", false), Boolean.class);
    Boolean postRoot = DefaultGroovyMethods.asType(get(options, "postRoot", false), Boolean.class);
    final Closure pre = (Closure) options.get("preDir");
    final Closure post = (Closure) options.get("postDir");
    final FileType type = (FileType) options.get("type");
    final Object filter = options.get("filter");
    final Object nameFilter = options.get("nameFilter");
    final Object excludeFilter = options.get("excludeFilter");
    final Object excludeNameFilter = options.get("excludeNameFilter");
    Object preResult = null;
    if (preRoot && pre != null) {
        preResult = pre.call(self);
    }
    if (preResult == FileVisitResult.TERMINATE || preResult == FileVisitResult.SKIP_SUBTREE)
        return;
    FileVisitResult terminated = traverse(self, options, closure, maxDepth);
    if (type != FileType.FILES && visitRoot) {
        if (closure != null && notFiltered(self, filter, nameFilter, excludeFilter, excludeNameFilter)) {
            Object closureResult = closure.call(self);
            if (closureResult == FileVisitResult.TERMINATE)
                return;
        }
    }
    if (postRoot && post != null && terminated != FileVisitResult.TERMINATE)
        post.call(self);
}

Example 58 with Closure

use of groovy.lang.Closure in project groovy-core by groovy.

the class JName1Test method testMetaClassNameHandlingWithClosures.

public void testMetaClassNameHandlingWithClosures() {
    // Test class implementing GroovyObject
    final Tt1cgi obj = new Tt1cgi();
    final Closure newX = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x";
        }
    };
    final Closure newX1 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x1";
        }
    };
    final Closure newX2 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x2";
        }
    };
    final Closure newX3 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x3";
        }
    };
    assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
    assertTrue(obj.invokeMethod("x", new Object[] {}) == obj.x());
    obj.setProperty("x", newX);
    obj.getMetaClass().setAttribute(obj, "x", newX1);
    assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());
    obj.setX(newX2);
    obj.x = newX3;
    assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
}

Example 59 with Closure

use of groovy.lang.Closure in project groovy-core by groovy.

the class JName1Test method testObjectSupportNameHandlingWitnClosureValuesi.

public void testObjectSupportNameHandlingWitnClosureValuesi() {
    final Tt1cgo obj = new Tt1cgo() {
    };
    // repeat test with subclass
    final Closure newX = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x";
        }
    };
    final Closure newX1 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x1";
        }
    };
    final Closure newX2 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x2";
        }
    };
    final Closure newX3 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x3";
        }
    };
    assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
    assertTrue(obj.invokeMethod("x", new Object[] {}) == obj.x());
    obj.setProperty("x", newX);
    obj.getMetaClass().setAttribute(obj, "x", newX1);
    assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());
    obj.setX(newX2);
    obj.x = newX3;
    assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
}

Example 60 with Closure

use of groovy.lang.Closure in project groovy-core by groovy.

the class JName1Test method testMetaClassNameHandlingWithClosures1.

public void testMetaClassNameHandlingWithClosures1() {
    final Tt1cgi obj = new Tt1cgi() {
    };
    // repeat test with subclass
    final Closure newX = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x";
        }
    };
    final Closure newX1 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x1";
        }
    };
    final Closure newX2 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x2";
        }
    };
    final Closure newX3 = new Closure(null) {

        public Object doCall(final Object params) {
            return "new x3";
        }
    };
    assertTrue(((Closure) obj.getProperty("x")).call() == obj.getX().call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == obj.x.call());
    assertTrue(obj.invokeMethod("x", new Object[] {}) == obj.x());
    obj.setProperty("x", newX);
    obj.getMetaClass().setAttribute(obj, "x", newX1);
    assertTrue(((Closure) obj.getProperty("x")).call() == newX.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX1.call());
    obj.setX(newX2);
    obj.x = newX3;
    assertTrue(((Closure) obj.getProperty("x")).call() == newX2.call());
    assertTrue(((Closure) obj.getMetaClass().getAttribute(obj, "x")).call() == newX3.call());
}