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.internal.objects;
27
28 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
29 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
30
31 import java.util.List;
32 import jdk.nashorn.internal.objects.annotations.Attribute;
33 import jdk.nashorn.internal.objects.annotations.Constructor;
34 import jdk.nashorn.internal.objects.annotations.Function;
35 import jdk.nashorn.internal.objects.annotations.ScriptClass;
36 import jdk.nashorn.internal.runtime.JSType;
37 import jdk.nashorn.internal.runtime.ScriptFunction;
38 import jdk.nashorn.internal.runtime.ScriptObject;
39 import jdk.nashorn.internal.runtime.ScriptRuntime;
40
41 /**
42 * ECMA 15.3 Function Objects
43 *
44 * Note: instances of this class are never created. This class is not even a
45 * subclass of ScriptObject. But, we use this class to generate prototype and
46 * constructor for "Function".
47 */
48 @ScriptClass("Function")
49 public final class NativeFunction {
50 // do *not* create me!
51 private NativeFunction() {
52 }
53
54 /**
55 * ECMA 15.3.4.2 Function.prototype.toString ( )
56 *
57 * @param self self reference
58 * @return string representation of Function
59 */
170 }
171 return ((ScriptFunction)self).toSource();
172 }
173
174 /**
175 * ECMA 15.3.2.1 new Function (p1, p2, ... , pn, body)
176 *
177 * Constructor
178 *
179 * @param newObj is the new operator used for constructing this function
180 * @param self self reference
181 * @param args arguments
182 * @return new NativeFunction
183 */
184 @Constructor(arity = 1)
185 public static Object function(final boolean newObj, final Object self, final Object... args) {
186 final StringBuilder sb = new StringBuilder();
187
188 sb.append("(function (");
189 if (args.length > 0) {
190 for (int i = 0; i < args.length - 1; i++) {
191 sb.append(JSType.toString(args[i]));
192 if (i < args.length - 2) {
193 sb.append(",");
194 }
195 }
196 }
197 sb.append(") {\n");
198 if (args.length > 0) {
199 sb.append(JSType.toString(args[args.length - 1]));
200 sb.append('\n');
201 }
202 sb.append("})");
203
204 final Global global = Global.instance();
205
206 return Global.directEval(global, sb.toString(), global, "<function>", Global.isStrict());
207 }
208 }
|
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.internal.objects;
27
28 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
29 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;
30
31 import java.util.List;
32 import jdk.nashorn.internal.objects.annotations.Attribute;
33 import jdk.nashorn.internal.objects.annotations.Constructor;
34 import jdk.nashorn.internal.objects.annotations.Function;
35 import jdk.nashorn.internal.objects.annotations.ScriptClass;
36 import jdk.nashorn.internal.parser.Parser;
37 import jdk.nashorn.internal.runtime.Context;
38 import jdk.nashorn.internal.runtime.JSType;
39 import jdk.nashorn.internal.runtime.ParserException;
40 import jdk.nashorn.internal.runtime.ScriptFunction;
41 import jdk.nashorn.internal.runtime.ScriptObject;
42 import jdk.nashorn.internal.runtime.ScriptRuntime;
43 import jdk.nashorn.internal.runtime.Source;
44
45 /**
46 * ECMA 15.3 Function Objects
47 *
48 * Note: instances of this class are never created. This class is not even a
49 * subclass of ScriptObject. But, we use this class to generate prototype and
50 * constructor for "Function".
51 */
52 @ScriptClass("Function")
53 public final class NativeFunction {
54 // do *not* create me!
55 private NativeFunction() {
56 }
57
58 /**
59 * ECMA 15.3.4.2 Function.prototype.toString ( )
60 *
61 * @param self self reference
62 * @return string representation of Function
63 */
174 }
175 return ((ScriptFunction)self).toSource();
176 }
177
178 /**
179 * ECMA 15.3.2.1 new Function (p1, p2, ... , pn, body)
180 *
181 * Constructor
182 *
183 * @param newObj is the new operator used for constructing this function
184 * @param self self reference
185 * @param args arguments
186 * @return new NativeFunction
187 */
188 @Constructor(arity = 1)
189 public static Object function(final boolean newObj, final Object self, final Object... args) {
190 final StringBuilder sb = new StringBuilder();
191
192 sb.append("(function (");
193 if (args.length > 0) {
194 final StringBuilder paramListBuf = new StringBuilder();
195 for (int i = 0; i < args.length - 1; i++) {
196 paramListBuf.append(JSType.toString(args[i]));
197 if (i < args.length - 2) {
198 paramListBuf.append(",");
199 }
200 }
201
202 final String paramList = paramListBuf.toString();
203 if (! paramList.isEmpty()) {
204 checkFunctionParameters(paramList);
205 sb.append(paramList);
206 }
207 }
208 sb.append(") {\n");
209 if (args.length > 0) {
210 final String funcBody = JSType.toString(args[args.length - 1]);
211 checkFunctionBody(funcBody);
212 sb.append(funcBody);
213 sb.append('\n');
214 }
215 sb.append("})");
216
217 final Global global = Global.instance();
218
219 return Global.directEval(global, sb.toString(), global, "<function>", Global.isStrict());
220 }
221
222 private static void checkFunctionParameters(final String params) {
223 final Source src = new Source("<function>", params);
224 final Parser parser = new Parser(Global.getEnv(), src, new Context.ThrowErrorManager());
225 try {
226 parser.parseFormalParameterList();
227 } catch (final ParserException pe) {
228 pe.throwAsEcmaException();
229 }
230 }
231
232 private static void checkFunctionBody(final String funcBody) {
233 final Source src = new Source("<function>", funcBody);
234 final Parser parser = new Parser(Global.getEnv(), src, new Context.ThrowErrorManager());
235 try {
236 parser.parseFunctionBody();
237 } catch (final ParserException pe) {
238 pe.throwAsEcmaException();
239 }
240 }
241 }
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