9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.nashorn.tools.jjs;
27
28 import java.io.IOException;
29 import java.util.function.Function;
30 import jdk.internal.jline.console.history.FileHistory;
31 import jdk.internal.jline.console.history.History;
32 import jdk.nashorn.api.scripting.AbstractJSObject;
33 import jdk.nashorn.api.scripting.JSObject;
34 import jdk.nashorn.internal.runtime.JSType;
35 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
36
37 /*
38 * A script friendly object that exposes history of commands to scripts.
39 */
40 final class HistoryObject extends AbstractJSObject {
41 private final FileHistory hist;
42
43 HistoryObject(final FileHistory hist) {
44 this.hist = hist;
45 }
46
47 @Override
48 public Object getMember(final String name) {
49 switch (name) {
50 case "clear":
51 return (Runnable)hist::clear;
52 case "forEach":
53 return (Function<JSObject, Object>)this::iterate;
54 case "print":
55 return (Runnable)this::print;
56 case "size":
57 return hist.size();
58 }
59 return UNDEFINED;
60 }
61
62 @Override
63 public Object getDefaultValue(final Class<?> hint) {
64 if (hint == String.class) {
65 return toString();
66 }
67 return UNDEFINED;
68 }
69
70 @Override
71 public String toString() {
72 return "[object history]";
73 }
74
75 private void print() {
76 for (History.Entry e : hist) {
77 System.out.println(e.value());
78 }
79 }
80
81 private Object iterate(final JSObject func) {
82 for (History.Entry e : hist) {
83 if (JSType.toBoolean(func.call(this, e.value().toString()))) {
84 break; // return true from callback to skip iteration
85 }
86 }
87 return UNDEFINED;
88 }
89 }
|
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.nashorn.tools.jjs;
27
28 import java.io.IOException;
29 import java.util.Collections;
30 import java.util.HashSet;
31 import java.util.Set;
32 import java.util.function.Function;
33 import jdk.internal.jline.console.history.FileHistory;
34 import jdk.internal.jline.console.history.History;
35 import jdk.nashorn.api.scripting.AbstractJSObject;
36 import jdk.nashorn.api.scripting.JSObject;
37 import jdk.nashorn.internal.runtime.JSType;
38 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
39
40 /*
41 * A script friendly object that exposes history of commands to scripts.
42 */
43 final class HistoryObject extends AbstractJSObject {
44 private static final Set<String> props;
45 static {
46 final HashSet<String> s = new HashSet<>();
47 s.add("clear");
48 s.add("forEach");
49 s.add("print");
50 s.add("size");
51 props = Collections.unmodifiableSet(s);
52 }
53
54 private final FileHistory hist;
55
56 HistoryObject(final FileHistory hist) {
57 this.hist = hist;
58 }
59
60 @Override
61 public Object getMember(final String name) {
62 switch (name) {
63 case "clear":
64 return (Runnable)hist::clear;
65 case "forEach":
66 return (Function<JSObject, Object>)this::iterate;
67 case "print":
68 return (Runnable)this::print;
69 case "size":
70 return hist.size();
71 }
72 return UNDEFINED;
73 }
74
75 @Override
76 public Object getDefaultValue(final Class<?> hint) {
77 if (hint == String.class) {
78 return toString();
79 }
80 return UNDEFINED;
81 }
82
83 @Override
84 public String toString() {
85 return "[object history]";
86 }
87
88 @Override
89 public Set<String> keySet() {
90 return props;
91 }
92
93 private void print() {
94 for (History.Entry e : hist) {
95 System.out.println(e.value());
96 }
97 }
98
99 private Object iterate(final JSObject func) {
100 for (History.Entry e : hist) {
101 if (JSType.toBoolean(func.call(this, e.value().toString()))) {
102 break; // return true from callback to skip iteration
103 }
104 }
105 return UNDEFINED;
106 }
107 }
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