Source Code Cross Referenced for NativeError.java in  » Scripting » rhino » org » mozilla » javascript » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » rhino » org.mozilla.javascript 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
002:         *
003:         * ***** BEGIN LICENSE BLOCK *****
004:         * Version: MPL 1.1/GPL 2.0
005:         *
006:         * The contents of this file are subject to the Mozilla Public License Version
007:         * 1.1 (the "License"); you may not use this file except in compliance with
008:         * the License. You may obtain a copy of the License at
009:         * http://www.mozilla.org/MPL/
010:         *
011:         * Software distributed under the License is distributed on an "AS IS" basis,
012:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013:         * for the specific language governing rights and limitations under the
014:         * License.
015:         *
016:         * The Original Code is Rhino code, released
017:         * May 6, 1999.
018:         *
019:         * The Initial Developer of the Original Code is
020:         * Netscape Communications Corporation.
021:         * Portions created by the Initial Developer are Copyright (C) 1997-1999
022:         * the Initial Developer. All Rights Reserved.
023:         *
024:         * Contributor(s):
025:         *   Igor Bukanov
026:         *   Roger Lawrence
027:         *
028:         * Alternatively, the contents of this file may be used under the terms of
029:         * the GNU General Public License Version 2 or later (the "GPL"), in which
030:         * case the provisions of the GPL are applicable instead of those above. If
031:         * you wish to allow use of your version of this file only under the terms of
032:         * the GPL and not to allow others to use your version of this file under the
033:         * MPL, indicate your decision by deleting the provisions above and replacing
034:         * them with the notice and other provisions required by the GPL. If you do
035:         * not delete the provisions above, a recipient may use your version of this
036:         * file under either the MPL or the GPL.
037:         *
038:         * ***** END LICENSE BLOCK ***** */
039:
040:        package org.mozilla.javascript;
041:
042:        /**
043:         *
044:         * The class of error objects
045:         *
046:         *  ECMA 15.11
047:         */
048:        final class NativeError extends IdScriptableObject {
049:            static final long serialVersionUID = -5338413581437645187L;
050:
051:            private static final Object ERROR_TAG = new Object();
052:
053:            static void init(Scriptable scope, boolean sealed) {
054:                NativeError obj = new NativeError();
055:                ScriptableObject.putProperty(obj, "name", "Error");
056:                ScriptableObject.putProperty(obj, "message", "");
057:                ScriptableObject.putProperty(obj, "fileName", "");
058:                ScriptableObject.putProperty(obj, "lineNumber", new Integer(0));
059:                obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
060:            }
061:
062:            static NativeError make(Context cx, Scriptable scope,
063:                    IdFunctionObject ctorObj, Object[] args) {
064:                Scriptable proto = (Scriptable) (ctorObj.get("prototype",
065:                        ctorObj));
066:
067:                NativeError obj = new NativeError();
068:                obj.setPrototype(proto);
069:                obj.setParentScope(scope);
070:
071:                int arglen = args.length;
072:                if (arglen >= 1) {
073:                    ScriptableObject.putProperty(obj, "message", ScriptRuntime
074:                            .toString(args[0]));
075:                    if (arglen >= 2) {
076:                        ScriptableObject.putProperty(obj, "fileName", args[1]);
077:                        if (arglen >= 3) {
078:                            int line = ScriptRuntime.toInt32(args[2]);
079:                            ScriptableObject.putProperty(obj, "lineNumber",
080:                                    new Integer(line));
081:                        }
082:                    }
083:                }
084:                if (arglen < 3
085:                        && cx
086:                                .hasFeature(Context.FEATURE_LOCATION_INFORMATION_IN_ERROR)) {
087:                    // Fill in fileName and lineNumber automatically when not specified
088:                    // explicitly, see Bugzilla issue #342807
089:                    int[] linep = new int[1];
090:                    String fileName = Context.getSourcePositionFromStack(linep);
091:                    ScriptableObject.putProperty(obj, "lineNumber",
092:                            new Integer(linep[0]));
093:                    if (arglen < 2) {
094:                        ScriptableObject.putProperty(obj, "fileName", fileName);
095:                    }
096:                }
097:                return obj;
098:            }
099:
100:            public String getClassName() {
101:                return "Error";
102:            }
103:
104:            public String toString() {
105:                return js_toString(this );
106:            }
107:
108:            protected void initPrototypeId(int id) {
109:                String s;
110:                int arity;
111:                switch (id) {
112:                case Id_constructor:
113:                    arity = 1;
114:                    s = "constructor";
115:                    break;
116:                case Id_toString:
117:                    arity = 0;
118:                    s = "toString";
119:                    break;
120:                case Id_toSource:
121:                    arity = 0;
122:                    s = "toSource";
123:                    break;
124:                default:
125:                    throw new IllegalArgumentException(String.valueOf(id));
126:                }
127:                initPrototypeMethod(ERROR_TAG, id, s, arity);
128:            }
129:
130:            public Object execIdCall(IdFunctionObject f, Context cx,
131:                    Scriptable scope, Scriptable this Obj, Object[] args) {
132:                if (!f.hasTag(ERROR_TAG)) {
133:                    return super .execIdCall(f, cx, scope, this Obj, args);
134:                }
135:                int id = f.methodId();
136:                switch (id) {
137:                case Id_constructor:
138:                    return make(cx, scope, f, args);
139:
140:                case Id_toString:
141:                    return js_toString(this Obj);
142:
143:                case Id_toSource:
144:                    return js_toSource(cx, scope, this Obj);
145:                }
146:                throw new IllegalArgumentException(String.valueOf(id));
147:            }
148:
149:            private static String js_toString(Scriptable this Obj) {
150:                return getString(this Obj, "name") + ": "
151:                        + getString(this Obj, "message");
152:            }
153:
154:            private static String js_toSource(Context cx, Scriptable scope,
155:                    Scriptable this Obj) {
156:                // Emulation of SpiderMonkey behavior
157:                Object name = ScriptableObject.getProperty(this Obj, "name");
158:                Object message = ScriptableObject.getProperty(this Obj,
159:                        "message");
160:                Object fileName = ScriptableObject.getProperty(this Obj,
161:                        "fileName");
162:                Object lineNumber = ScriptableObject.getProperty(this Obj,
163:                        "lineNumber");
164:
165:                StringBuffer sb = new StringBuffer();
166:                sb.append("(new ");
167:                if (name == NOT_FOUND) {
168:                    name = Undefined.instance;
169:                }
170:                sb.append(ScriptRuntime.toString(name));
171:                sb.append("(");
172:                if (message != NOT_FOUND || fileName != NOT_FOUND
173:                        || lineNumber != NOT_FOUND) {
174:                    if (message == NOT_FOUND) {
175:                        message = "";
176:                    }
177:                    sb.append(ScriptRuntime.uneval(cx, scope, message));
178:                    if (fileName != NOT_FOUND || lineNumber != NOT_FOUND) {
179:                        sb.append(", ");
180:                        if (fileName == NOT_FOUND) {
181:                            fileName = "";
182:                        }
183:                        sb.append(ScriptRuntime.uneval(cx, scope, fileName));
184:                        if (lineNumber != NOT_FOUND) {
185:                            int line = ScriptRuntime.toInt32(lineNumber);
186:                            if (line != 0) {
187:                                sb.append(", ");
188:                                sb.append(ScriptRuntime.toString(line));
189:                            }
190:                        }
191:                    }
192:                }
193:                sb.append("))");
194:                return sb.toString();
195:            }
196:
197:            private static String getString(Scriptable obj, String id) {
198:                Object value = ScriptableObject.getProperty(obj, id);
199:                if (value == NOT_FOUND)
200:                    return "";
201:                return ScriptRuntime.toString(value);
202:            }
203:
204:            protected int findPrototypeId(String s) {
205:                int id;
206:                // #string_id_map#
207:                // #generated# Last update: 2007-05-09 08:15:45 EDT
208:                L0: {
209:                    id = 0;
210:                    String X = null;
211:                    int c;
212:                    int s_length = s.length();
213:                    if (s_length == 8) {
214:                        c = s.charAt(3);
215:                        if (c == 'o') {
216:                            X = "toSource";
217:                            id = Id_toSource;
218:                        } else if (c == 't') {
219:                            X = "toString";
220:                            id = Id_toString;
221:                        }
222:                    } else if (s_length == 11) {
223:                        X = "constructor";
224:                        id = Id_constructor;
225:                    }
226:                    if (X != null && X != s && !X.equals(s))
227:                        id = 0;
228:                    break L0;
229:                }
230:                // #/generated#
231:                return id;
232:            }
233:
234:            private static final int Id_constructor = 1, Id_toString = 2,
235:                    Id_toSource = 3,
236:
237:                    MAX_PROTOTYPE_ID = 3;
238:
239:            // #/string_id_map#
240:        }
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