37 import jdk.nashorn.internal.runtime.PropertyMap;
38 import jdk.nashorn.internal.runtime.ScriptObject;
39 import jdk.nashorn.internal.runtime.ScriptRuntime;
40 import jdk.nashorn.internal.objects.NativeJava;
41
42 /*
43 * A helper class to get properties of a given object for source code completion.
44 */
45 final class PropertiesHelper {
46 // Java package properties helper, may be null
47 private PackagesHelper pkgsHelper;
48 // cached properties list
49 private final WeakHashMap<Object, List<String>> propsCache = new WeakHashMap<>();
50
51 /**
52 * Construct a new PropertiesHelper.
53 *
54 * @param classPath Class path to compute properties of java package objects
55 */
56 PropertiesHelper(final String classPath) {
57 if (PackagesHelper.isAvailable()) {
58 try {
59 this.pkgsHelper = new PackagesHelper(classPath);
60 } catch (final IOException exp) {
61 if (Main.DEBUG) {
62 exp.printStackTrace();
63 }
64 this.pkgsHelper = null;
65 }
66 }
67 }
68
69 void close() throws Exception {
70 propsCache.clear();
71 pkgsHelper.close();
72 }
73
74 /**
75 * returns the list of properties of the given object.
76 *
77 * @param obj object whose property list is returned
78 * @return the list of properties of the given object
79 */
80 List<String> getProperties(final Object obj) {
81 assert obj != null && obj != ScriptRuntime.UNDEFINED;
82
83 // wrap JS primitives as objects before gettting properties
84 if (JSType.isPrimitive(obj)) {
85 return getProperties(JSType.toScriptObject(obj));
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37 import jdk.nashorn.internal.runtime.PropertyMap;
38 import jdk.nashorn.internal.runtime.ScriptObject;
39 import jdk.nashorn.internal.runtime.ScriptRuntime;
40 import jdk.nashorn.internal.objects.NativeJava;
41
42 /*
43 * A helper class to get properties of a given object for source code completion.
44 */
45 final class PropertiesHelper {
46 // Java package properties helper, may be null
47 private PackagesHelper pkgsHelper;
48 // cached properties list
49 private final WeakHashMap<Object, List<String>> propsCache = new WeakHashMap<>();
50
51 /**
52 * Construct a new PropertiesHelper.
53 *
54 * @param classPath Class path to compute properties of java package objects
55 */
56 PropertiesHelper(final String classPath) {
57 try {
58 this.pkgsHelper = new PackagesHelper(classPath);
59 } catch (final IOException exp) {
60 if (Main.DEBUG) {
61 exp.printStackTrace();
62 }
63 this.pkgsHelper = null;
64 }
65 }
66
67 void close() throws Exception {
68 propsCache.clear();
69 pkgsHelper.close();
70 }
71
72 /**
73 * returns the list of properties of the given object.
74 *
75 * @param obj object whose property list is returned
76 * @return the list of properties of the given object
77 */
78 List<String> getProperties(final Object obj) {
79 assert obj != null && obj != ScriptRuntime.UNDEFINED;
80
81 // wrap JS primitives as objects before gettting properties
82 if (JSType.isPrimitive(obj)) {
83 return getProperties(JSType.toScriptObject(obj));
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