Lambda's work OK in AOT mode. Defender methods work OK. Merging.
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28 import org.apidesign.bck2brwsr.core.JavaScriptBody;
29 import org.apidesign.bck2brwsr.core.JavaScriptPrototype;
32 * The Boolean class wraps a value of the primitive type
33 * {@code boolean} in an object. An object of type
34 * {@code Boolean} contains a single field whose type is
37 * In addition, this class provides many methods for
38 * converting a {@code boolean} to a {@code String} and a
39 * {@code String} to a {@code boolean}, as well as other
40 * constants and methods useful when dealing with a
43 * @author Arthur van Hoff
46 @JavaScriptPrototype(container = "Boolean.prototype", prototype = "new Boolean")
47 public final class Boolean implements java.io.Serializable,
51 * The {@code Boolean} object corresponding to the primitive
54 public static final Boolean TRUE = new Boolean(true);
57 * The {@code Boolean} object corresponding to the primitive
58 * value {@code false}.
60 public static final Boolean FALSE = new Boolean(false);
63 * The Class object representing the primitive type boolean.
67 public static final Class<Boolean> TYPE = Class.getPrimitiveClass("boolean");
70 * The value of the Boolean.
74 private final boolean value;
76 /** use serialVersionUID from JDK 1.0.2 for interoperability */
77 private static final long serialVersionUID = -3665804199014368530L;
80 * Allocates a {@code Boolean} object representing the
81 * {@code value} argument.
83 * <p><b>Note: It is rarely appropriate to use this constructor.
84 * Unless a <i>new</i> instance is required, the static factory
85 * {@link #valueOf(boolean)} is generally a better choice. It is
86 * likely to yield significantly better space and time performance.</b>
88 * @param value the value of the {@code Boolean}.
90 public Boolean(boolean value) {
95 * Allocates a {@code Boolean} object representing the value
96 * {@code true} if the string argument is not {@code null}
97 * and is equal, ignoring case, to the string {@code "true"}.
98 * Otherwise, allocate a {@code Boolean} object representing the
99 * value {@code false}. Examples:<p>
100 * {@code new Boolean("True")} produces a {@code Boolean} object
101 * that represents {@code true}.<br>
102 * {@code new Boolean("yes")} produces a {@code Boolean} object
103 * that represents {@code false}.
105 * @param s the string to be converted to a {@code Boolean}.
107 public Boolean(String s) {
112 * Parses the string argument as a boolean. The {@code boolean}
113 * returned represents the value {@code true} if the string argument
114 * is not {@code null} and is equal, ignoring case, to the string
115 * {@code "true"}. <p>
116 * Example: {@code Boolean.parseBoolean("True")} returns {@code true}.<br>
117 * Example: {@code Boolean.parseBoolean("yes")} returns {@code false}.
119 * @param s the {@code String} containing the boolean
120 * representation to be parsed
121 * @return the boolean represented by the string argument
124 public static boolean parseBoolean(String s) {
129 * Returns the value of this {@code Boolean} object as a boolean
132 * @return the primitive {@code boolean} value of this object.
134 @JavaScriptBody(args = {}, body = "return this.valueOf();")
135 public boolean booleanValue() {
140 * Returns a {@code Boolean} instance representing the specified
141 * {@code boolean} value. If the specified {@code boolean} value
142 * is {@code true}, this method returns {@code Boolean.TRUE};
143 * if it is {@code false}, this method returns {@code Boolean.FALSE}.
144 * If a new {@code Boolean} instance is not required, this method
145 * should generally be used in preference to the constructor
146 * {@link #Boolean(boolean)}, as this method is likely to yield
147 * significantly better space and time performance.
149 * @param b a boolean value.
150 * @return a {@code Boolean} instance representing {@code b}.
153 public static Boolean valueOf(boolean b) {
154 return (b ? TRUE : FALSE);
158 * Returns a {@code Boolean} with a value represented by the
159 * specified string. The {@code Boolean} returned represents a
160 * true value if the string argument is not {@code null}
161 * and is equal, ignoring case, to the string {@code "true"}.
164 * @return the {@code Boolean} value represented by the string.
166 public static Boolean valueOf(String s) {
167 return toBoolean(s) ? TRUE : FALSE;
171 * Returns a {@code String} object representing the specified
172 * boolean. If the specified boolean is {@code true}, then
173 * the string {@code "true"} will be returned, otherwise the
174 * string {@code "false"} will be returned.
176 * @param b the boolean to be converted
177 * @return the string representation of the specified {@code boolean}
180 public static String toString(boolean b) {
181 return b ? "true" : "false";
185 * Returns a {@code String} object representing this Boolean's
186 * value. If this object represents the value {@code true},
187 * a string equal to {@code "true"} is returned. Otherwise, a
188 * string equal to {@code "false"} is returned.
190 * @return a string representation of this object.
192 public String toString() {
193 return value ? "true" : "false";
197 * Returns a hash code for this {@code Boolean} object.
199 * @return the integer {@code 1231} if this object represents
200 * {@code true}; returns the integer {@code 1237} if this
201 * object represents {@code false}.
203 public int hashCode() {
204 return value ? 1231 : 1237;
208 * Returns {@code true} if and only if the argument is not
209 * {@code null} and is a {@code Boolean} object that
210 * represents the same {@code boolean} value as this object.
212 * @param obj the object to compare with.
213 * @return {@code true} if the Boolean objects represent the
214 * same value; {@code false} otherwise.
216 public boolean equals(Object obj) {
217 if (obj instanceof Boolean) {
218 return value == ((Boolean)obj).booleanValue();
224 * Returns {@code true} if and only if the system property
225 * named by the argument exists and is equal to the string
226 * {@code "true"}. (Beginning with version 1.0.2 of the
227 * Java<small><sup>TM</sup></small> platform, the test of
228 * this string is case insensitive.) A system property is accessible
229 * through {@code getProperty}, a method defined by the
230 * {@code System} class.
232 * If there is no property with the specified name, or if the specified
233 * name is empty or null, then {@code false} is returned.
235 * @param name the system property name.
236 * @return the {@code boolean} value of the system property.
237 * @see java.lang.System#getProperty(java.lang.String)
238 * @see java.lang.System#getProperty(java.lang.String, java.lang.String)
240 public static boolean getBoolean(String name) {
241 boolean result = false;
243 result = toBoolean(AbstractStringBuilder.getProperty(name));
244 } catch (IllegalArgumentException e) {
245 } catch (NullPointerException e) {
251 * Compares this {@code Boolean} instance with another.
253 * @param b the {@code Boolean} instance to be compared
254 * @return zero if this object represents the same boolean value as the
255 * argument; a positive value if this object represents true
256 * and the argument represents false; and a negative value if
257 * this object represents false and the argument represents true
258 * @throws NullPointerException if the argument is {@code null}
262 public int compareTo(Boolean b) {
263 return compare(this.value, b.value);
267 * Compares two {@code boolean} values.
268 * The value returned is identical to what would be returned by:
270 * Boolean.valueOf(x).compareTo(Boolean.valueOf(y))
273 * @param x the first {@code boolean} to compare
274 * @param y the second {@code boolean} to compare
275 * @return the value {@code 0} if {@code x == y};
276 * a value less than {@code 0} if {@code !x && y}; and
277 * a value greater than {@code 0} if {@code x && !y}
280 public static int compare(boolean x, boolean y) {
281 return (x == y) ? 0 : (x ? 1 : -1);
284 private static boolean toBoolean(String name) {
285 return ((name != null) && name.equalsIgnoreCase("true"));
288 // as last step of initialization, initialize valueOf method
291 @JavaScriptBody(args = { }, body =
292 "var bc = vm.java_lang_Boolean(false);\n" +
293 "bc.valueOf = function() { return this._value() ? true : false; };\n" +
294 "bc.toString = function() { return this.valueOf().toString(); };\n"
296 private native static void initValueOf();