diff options
Diffstat (limited to 'trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java')
| -rw-r--r-- | trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java | 3830 |
1 files changed, 0 insertions, 3830 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java deleted file mode 100644 index f879581..0000000 --- a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java +++ /dev/null @@ -1,3830 +0,0 @@ -/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- - * - * ***** BEGIN LICENSE BLOCK ***** - * Version: MPL 1.1/GPL 2.0 - * - * The contents of this file are subject to the Mozilla Public License Version - * 1.1 (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS IS" basis, - * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License - * for the specific language governing rights and limitations under the - * License. - * - * The Original Code is Rhino code, released - * May 6, 1999. - * - * The Initial Developer of the Original Code is - * Netscape Communications Corporation. - * Portions created by the Initial Developer are Copyright (C) 1997-2000 - * the Initial Developer. All Rights Reserved. - * - * Contributor(s): - * Patrick Beard - * Norris Boyd - * Igor Bukanov - * Ethan Hugg - * Bob Jervis - * Roger Lawrence - * Terry Lucas - * Frank Mitchell - * Milen Nankov - * Hannes Wallnoefer - * Andrew Wason - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License Version 2 or later (the "GPL"), in which - * case the provisions of the GPL are applicable instead of those above. If - * you wish to allow use of your version of this file only under the terms of - * the GPL and not to allow others to use your version of this file under the - * MPL, indicate your decision by deleting the provisions above and replacing - * them with the notice and other provisions required by the GPL. If you do - * not delete the provisions above, a recipient may use your version of this - * file under either the MPL or the GPL. - * - * ***** END LICENSE BLOCK ***** */ - -package org.mozilla.javascript; - -import java.io.Serializable; -import java.lang.reflect.*; -import java.text.MessageFormat; -import java.util.Locale; -import java.util.ResourceBundle; - -import org.mozilla.javascript.xml.XMLObject; -import org.mozilla.javascript.xml.XMLLib; - -/** - * This is the class that implements the runtime. - * - * @author Norris Boyd - */ - -public class ScriptRuntime { - - /** - * No instances should be created. - */ - protected ScriptRuntime() { - } - - private static class NoSuchMethodShim implements Callable { - String methodName; - Callable noSuchMethodMethod; - - NoSuchMethodShim(Callable noSuchMethodMethod, String methodName) - { - this.noSuchMethodMethod = noSuchMethodMethod; - this.methodName = methodName; - } - /** - * Perform the call. - * - * @param cx the current Context for this thread - * @param scope the scope to use to resolve properties. - * @param thisObj the JavaScript <code>this</code> object - * @param args the array of arguments - * @return the result of the call - */ - public Object call(Context cx, Scriptable scope, Scriptable thisObj, - Object[] args) - { - Object[] nestedArgs = new Object[2]; - - nestedArgs[0] = methodName; - nestedArgs[1] = newArrayLiteral(args, null, cx, scope); - return noSuchMethodMethod.call(cx, scope, thisObj, nestedArgs); - } - - } - /* - * There's such a huge space (and some time) waste for the Foo.class - * syntax: the compiler sticks in a test of a static field in the - * enclosing class for null and the code for creating the class value. - * It has to do this since the reference has to get pushed off until - * execution time (i.e. can't force an early load), but for the - * 'standard' classes - especially those in java.lang, we can trust - * that they won't cause problems by being loaded early. - */ - - public final static Class - BooleanClass = Kit.classOrNull("java.lang.Boolean"), - ByteClass = Kit.classOrNull("java.lang.Byte"), - CharacterClass = Kit.classOrNull("java.lang.Character"), - ClassClass = Kit.classOrNull("java.lang.Class"), - DoubleClass = Kit.classOrNull("java.lang.Double"), - FloatClass = Kit.classOrNull("java.lang.Float"), - IntegerClass = Kit.classOrNull("java.lang.Integer"), - LongClass = Kit.classOrNull("java.lang.Long"), - NumberClass = Kit.classOrNull("java.lang.Number"), - ObjectClass = Kit.classOrNull("java.lang.Object"), - ShortClass = Kit.classOrNull("java.lang.Short"), - StringClass = Kit.classOrNull("java.lang.String"), - DateClass = Kit.classOrNull("java.util.Date"); - - public final static Class - ContextClass - = Kit.classOrNull("org.mozilla.javascript.Context"), - ContextFactoryClass - = Kit.classOrNull("org.mozilla.javascript.ContextFactory"), - FunctionClass - = Kit.classOrNull("org.mozilla.javascript.Function"), - ScriptableClass - = Kit.classOrNull("org.mozilla.javascript.Scriptable"), - ScriptableObjectClass - = Kit.classOrNull("org.mozilla.javascript.ScriptableObject"); - - private static final String[] lazilyNames = { - "RegExp", "org.mozilla.javascript.regexp.NativeRegExp", - "Packages", "org.mozilla.javascript.NativeJavaTopPackage", - "java", "org.mozilla.javascript.NativeJavaTopPackage", - "javax", "org.mozilla.javascript.NativeJavaTopPackage", - "org", "org.mozilla.javascript.NativeJavaTopPackage", - "com", "org.mozilla.javascript.NativeJavaTopPackage", - "edu", "org.mozilla.javascript.NativeJavaTopPackage", - "net", "org.mozilla.javascript.NativeJavaTopPackage", - "getClass", "org.mozilla.javascript.NativeJavaTopPackage", - "JavaAdapter", "org.mozilla.javascript.JavaAdapter", - "JavaImporter", "org.mozilla.javascript.ImporterTopLevel", - "Continuation", "org.mozilla.javascript.continuations.Continuation", - // TODO Grotesque hack using literal string (xml) just to minimize - // changes for now - "XML", "(xml)", - "XMLList", "(xml)", - "Namespace", "(xml)", - "QName", "(xml)", - }; - - private static final Object LIBRARY_SCOPE_KEY = new Object(); - - public static boolean isRhinoRuntimeType(Class cl) - { - if (cl.isPrimitive()) { - return (cl != Character.TYPE); - } else { - return (cl == StringClass || cl == BooleanClass - || NumberClass.isAssignableFrom(cl) - || ScriptableClass.isAssignableFrom(cl)); - } - } - - public static ScriptableObject initStandardObjects(Context cx, - ScriptableObject scope, - boolean sealed) - { - if (scope == null) { - scope = new NativeObject(); - } - scope.associateValue(LIBRARY_SCOPE_KEY, scope); - (new ClassCache()).associate(scope); - - BaseFunction.init(scope, sealed); - NativeObject.init(scope, sealed); - - Scriptable objectProto = ScriptableObject.getObjectPrototype(scope); - - // Function.prototype.__proto__ should be Object.prototype - Scriptable functionProto = ScriptableObject.getFunctionPrototype(scope); - functionProto.setPrototype(objectProto); - - // Set the prototype of the object passed in if need be - if (scope.getPrototype() == null) - scope.setPrototype(objectProto); - - // must precede NativeGlobal since it's needed therein - NativeError.init(scope, sealed); - NativeGlobal.init(cx, scope, sealed); - - NativeArray.init(scope, sealed); - if (cx.getOptimizationLevel() > 0) { - // When optimizing, attempt to fulfill all requests for new Array(N) - // with a higher threshold before switching to a sparse - // representation - NativeArray.setMaximumInitialCapacity(200000); - } - NativeString.init(scope, sealed); - NativeBoolean.init(scope, sealed); - NativeNumber.init(scope, sealed); - NativeDate.init(scope, sealed); - NativeMath.init(scope, sealed); - - NativeWith.init(scope, sealed); - NativeCall.init(scope, sealed); - NativeScript.init(scope, sealed); - - NativeIterator.init(scope, sealed); // Also initializes NativeGenerator - - boolean withXml = cx.hasFeature(Context.FEATURE_E4X) && - cx.getE4xImplementationFactory() != null; - - for (int i = 0; i != lazilyNames.length; i += 2) { - String topProperty = lazilyNames[i]; - String className = lazilyNames[i + 1]; - if (!withXml && className.equals("(xml)")) { - continue; - } else if (withXml && className.equals("(xml)")) { - className = cx.getE4xImplementationFactory(). - getImplementationClassName(); - } - new LazilyLoadedCtor(scope, topProperty, className, sealed); - } - - return scope; - } - - public static ScriptableObject getLibraryScopeOrNull(Scriptable scope) - { - ScriptableObject libScope; - libScope = (ScriptableObject)ScriptableObject. - getTopScopeValue(scope, LIBRARY_SCOPE_KEY); - return libScope; - } - - // It is public so NativeRegExp can access it. - public static boolean isJSLineTerminator(int c) - { - // Optimization for faster check for eol character: - // they do not have 0xDFD0 bits set - if ((c & 0xDFD0) != 0) { - return false; - } - return c == '\n' || c == '\r' || c == 0x2028 || c == 0x2029; - } - - public static Boolean wrapBoolean(boolean b) - { - return b ? Boolean.TRUE : Boolean.FALSE; - } - - public static Integer wrapInt(int i) - { - return new Integer(i); - } - - public static Number wrapNumber(double x) - { - if (x != x) { - return ScriptRuntime.NaNobj; - } - return new Double(x); - } - - /** - * Convert the value to a boolean. - * - * See ECMA 9.2. - */ - public static boolean toBoolean(Object val) - { - for (;;) { - if (val instanceof Boolean) - return ((Boolean) val).booleanValue(); - if (val == null || val == Undefined.instance) - return false; - if (val instanceof String) - return ((String) val).length() != 0; - if (val instanceof Number) { - double d = ((Number) val).doubleValue(); - return (d == d && d != 0.0); - } - if (val instanceof Scriptable) { - if (val instanceof ScriptableObject && - ((ScriptableObject) val).avoidObjectDetection()) - { - return false; - } - if (Context.getContext().isVersionECMA1()) { - // pure ECMA - return true; - } - // ECMA extension - val = ((Scriptable) val).getDefaultValue(BooleanClass); - if (val instanceof Scriptable) - throw errorWithClassName("msg.primitive.expected", val); - continue; - } - warnAboutNonJSObject(val); - return true; - } - } - - /** - * Convert the value to a number. - * - * See ECMA 9.3. - */ - public static double toNumber(Object val) - { - for (;;) { - if (val instanceof Number) - return ((Number) val).doubleValue(); - if (val == null) - return +0.0; - if (val == Undefined.instance) - return NaN; - if (val instanceof String) - return toNumber((String) val); - if (val instanceof Boolean) - return ((Boolean) val).booleanValue() ? 1 : +0.0; - if (val instanceof Scriptable) { - val = ((Scriptable) val).getDefaultValue(NumberClass); - if (val instanceof Scriptable) - throw errorWithClassName("msg.primitive.expected", val); - continue; - } - warnAboutNonJSObject(val); - return NaN; - } - } - - public static double toNumber(Object[] args, int index) { - return (index < args.length) ? toNumber(args[index]) : NaN; - } - - // Can not use Double.NaN defined as 0.0d / 0.0 as under the Microsoft VM, - // versions 2.01 and 3.0P1, that causes some uses (returns at least) of - // Double.NaN to be converted to 1.0. - // So we use ScriptRuntime.NaN instead of Double.NaN. - public static final double - NaN = Double.longBitsToDouble(0x7ff8000000000000L); - - // A similar problem exists for negative zero. - public static final double - negativeZero = Double.longBitsToDouble(0x8000000000000000L); - - public static final Double NaNobj = new Double(NaN); - - /* - * Helper function for toNumber, parseInt, and TokenStream.getToken. - */ - static double stringToNumber(String s, int start, int radix) { - char digitMax = '9'; - char lowerCaseBound = 'a'; - char upperCaseBound = 'A'; - int len = s.length(); - if (radix < 10) { - digitMax = (char) ('0' + radix - 1); - } - if (radix > 10) { - lowerCaseBound = (char) ('a' + radix - 10); - upperCaseBound = (char) ('A' + radix - 10); - } - int end; - double sum = 0.0; - for (end=start; end < len; end++) { - char c = s.charAt(end); - int newDigit; - if ('0' <= c && c <= digitMax) - newDigit = c - '0'; - else if ('a' <= c && c < lowerCaseBound) - newDigit = c - 'a' + 10; - else if ('A' <= c && c < upperCaseBound) - newDigit = c - 'A' + 10; - else - break; - sum = sum*radix + newDigit; - } - if (start == end) { - return NaN; - } - if (sum >= 9007199254740992.0) { - if (radix == 10) { - /* If we're accumulating a decimal number and the number - * is >= 2^53, then the result from the repeated multiply-add - * above may be inaccurate. Call Java to get the correct - * answer. - */ - try { - return Double.valueOf(s.substring(start, end)).doubleValue(); - } catch (NumberFormatException nfe) { - return NaN; - } - } else if (radix == 2 || radix == 4 || radix == 8 || - radix == 16 || radix == 32) - { - /* The number may also be inaccurate for one of these bases. - * This happens if the addition in value*radix + digit causes - * a round-down to an even least significant mantissa bit - * when the first dropped bit is a one. If any of the - * following digits in the number (which haven't been added - * in yet) are nonzero then the correct action would have - * been to round up instead of down. An example of this - * occurs when reading the number 0x1000000000000081, which - * rounds to 0x1000000000000000 instead of 0x1000000000000100. - */ - int bitShiftInChar = 1; - int digit = 0; - - final int SKIP_LEADING_ZEROS = 0; - final int FIRST_EXACT_53_BITS = 1; - final int AFTER_BIT_53 = 2; - final int ZEROS_AFTER_54 = 3; - final int MIXED_AFTER_54 = 4; - - int state = SKIP_LEADING_ZEROS; - int exactBitsLimit = 53; - double factor = 0.0; - boolean bit53 = false; - // bit54 is the 54th bit (the first dropped from the mantissa) - boolean bit54 = false; - - for (;;) { - if (bitShiftInChar == 1) { - if (start == end) - break; - digit = s.charAt(start++); - if ('0' <= digit && digit <= '9') - digit -= '0'; - else if ('a' <= digit && digit <= 'z') - digit -= 'a' - 10; - else - digit -= 'A' - 10; - bitShiftInChar = radix; - } - bitShiftInChar >>= 1; - boolean bit = (digit & bitShiftInChar) != 0; - - switch (state) { - case SKIP_LEADING_ZEROS: - if (bit) { - --exactBitsLimit; - sum = 1.0; - state = FIRST_EXACT_53_BITS; - } - break; - case FIRST_EXACT_53_BITS: - sum *= 2.0; - if (bit) - sum += 1.0; - --exactBitsLimit; - if (exactBitsLimit == 0) { - bit53 = bit; - state = AFTER_BIT_53; - } - break; - case AFTER_BIT_53: - bit54 = bit; - factor = 2.0; - state = ZEROS_AFTER_54; - break; - case ZEROS_AFTER_54: - if (bit) { - state = MIXED_AFTER_54; - } - // fallthrough - case MIXED_AFTER_54: - factor *= 2; - break; - } - } - switch (state) { - case SKIP_LEADING_ZEROS: - sum = 0.0; - break; - case FIRST_EXACT_53_BITS: - case AFTER_BIT_53: - // do nothing - break; - case ZEROS_AFTER_54: - // x1.1 -> x1 + 1 (round up) - // x0.1 -> x0 (round down) - if (bit54 & bit53) - sum += 1.0; - sum *= factor; - break; - case MIXED_AFTER_54: - // x.100...1.. -> x + 1 (round up) - // x.0anything -> x (round down) - if (bit54) - sum += 1.0; - sum *= factor; - break; - } - } - /* We don't worry about inaccurate numbers for any other base. */ - } - return sum; - } - - - /** - * ToNumber applied to the String type - * - * See ECMA 9.3.1 - */ - public static double toNumber(String s) { - int len = s.length(); - int start = 0; - char startChar; - for (;;) { - if (start == len) { - // Empty or contains only whitespace - return +0.0; - } - startChar = s.charAt(start); - if (!Character.isWhitespace(startChar)) - break; - start++; - } - - if (startChar == '0') { - if (start + 2 < len) { - int c1 = s.charAt(start + 1); - if (c1 == 'x' || c1 == 'X') { - // A hexadecimal number - return stringToNumber(s, start + 2, 16); - } - } - } else if (startChar == '+' || startChar == '-') { - if (start + 3 < len && s.charAt(start + 1) == '0') { - int c2 = s.charAt(start + 2); - if (c2 == 'x' || c2 == 'X') { - // A hexadecimal number with sign - double val = stringToNumber(s, start + 3, 16); - return startChar == '-' ? -val : val; - } - } - } - - int end = len - 1; - char endChar; - while (Character.isWhitespace(endChar = s.charAt(end))) - end--; - if (endChar == 'y') { - // check for "Infinity" - if (startChar == '+' || startChar == '-') - start++; - if (start + 7 == end && s.regionMatches(start, "Infinity", 0, 8)) - return startChar == '-' - ? Double.NEGATIVE_INFINITY - : Double.POSITIVE_INFINITY; - return NaN; - } - // A non-hexadecimal, non-infinity number: - // just try a normal floating point conversion - String sub = s.substring(start, end+1); - if (MSJVM_BUG_WORKAROUNDS) { - // The MS JVM will accept non-conformant strings - // rather than throwing a NumberFormatException - // as it should. - for (int i=sub.length()-1; i >= 0; i--) { - char c = sub.charAt(i); - if (('0' <= c && c <= '9') || c == '.' || - c == 'e' || c == 'E' || - c == '+' || c == '-') - continue; - return NaN; - } - } - try { - return Double.valueOf(sub).doubleValue(); - } catch (NumberFormatException ex) { - return NaN; - } - } - - /** - * Helper function for builtin objects that use the varargs form. - * ECMA function formal arguments are undefined if not supplied; - * this function pads the argument array out to the expected - * length, if necessary. - */ - public static Object[] padArguments(Object[] args, int count) { - if (count < args.length) - return args; - - int i; - Object[] result = new Object[count]; - for (i = 0; i < args.length; i++) { - result[i] = args[i]; - } - - for (; i < count; i++) { - result[i] = Undefined.instance; - } - - return result; - } - - /* Work around Microsoft Java VM bugs. */ - private final static boolean MSJVM_BUG_WORKAROUNDS = true; - - public static String escapeString(String s) - { - return escapeString(s, '"'); - } - - /** - * For escaping strings printed by object and array literals; not quite - * the same as 'escape.' - */ - public static String escapeString(String s, char escapeQuote) - { - if (!(escapeQuote == '"' || escapeQuote == '\'')) Kit.codeBug(); - StringBuffer sb = null; - - for(int i = 0, L = s.length(); i != L; ++i) { - int c = s.charAt(i); - - if (' ' <= c && c <= '~' && c != escapeQuote && c != '\\') { - // an ordinary print character (like C isprint()) and not " - // or \ . - if (sb != null) { - sb.append((char)c); - } - continue; - } - if (sb == null) { - sb = new StringBuffer(L + 3); - sb.append(s); - sb.setLength(i); - } - - int escape = -1; - switch (c) { - case '\b': escape = 'b'; break; - case '\f': escape = 'f'; break; - case '\n': escape = 'n'; break; - case '\r': escape = 'r'; break; - case '\t': escape = 't'; break; - case 0xb: escape = 'v'; break; // Java lacks \v. - case ' ': escape = ' '; break; - case '\\': escape = '\\'; break; - } - if (escape >= 0) { - // an \escaped sort of character - sb.append('\\'); - sb.append((char)escape); - } else if (c == escapeQuote) { - sb.append('\\'); - sb.append(escapeQuote); - } else { - int hexSize; - if (c < 256) { - // 2-digit hex - sb.append("\\x"); - hexSize = 2; - } else { - // Unicode. - sb.append("\\u"); - hexSize = 4; - } - // append hexadecimal form of c left-padded with 0 - for (int shift = (hexSize - 1) * 4; shift >= 0; shift -= 4) { - int digit = 0xf & (c >> shift); - int hc = (digit < 10) ? '0' + digit : 'a' - 10 + digit; - sb.append((char)hc); - } - } - } - return (sb == null) ? s : sb.toString(); - } - - static boolean isValidIdentifierName(String s) - { - int L = s.length(); - if (L == 0) - return false; - if (!Character.isJavaIdentifierStart(s.charAt(0))) - return false; - for (int i = 1; i != L; ++i) { - if (!Character.isJavaIdentifierPart(s.charAt(i))) - return false; - } - return !TokenStream.isKeyword(s); - } - - /** - * Convert the value to a string. - * - * See ECMA 9.8. - */ - public static String toString(Object val) { - for (;;) { - if (val == null) { - return "null"; - } - if (val == Undefined.instance) { - return "undefined"; - } - if (val instanceof String) { - return (String)val; - } - if (val instanceof Number) { - // XXX should we just teach NativeNumber.stringValue() - // about Numbers? - return numberToString(((Number)val).doubleValue(), 10); - } - if (val instanceof Scriptable) { - val = ((Scriptable) val).getDefaultValue(StringClass); - if (val instanceof Scriptable) { - throw errorWithClassName("msg.primitive.expected", val); - } - continue; - } - return val.toString(); - } - } - - static String defaultObjectToString(Scriptable obj) - { - return "[object " + obj.getClassName() + ']'; - } - - public static String toString(Object[] args, int index) - { - return (index < args.length) ? toString(args[index]) : "undefined"; - } - - /** - * Optimized version of toString(Object) for numbers. - */ - public static String toString(double val) { - return numberToString(val, 10); - } - - public static String numberToString(double d, int base) { - if (d != d) - return "NaN"; - if (d == Double.POSITIVE_INFINITY) - return "Infinity"; - if (d == Double.NEGATIVE_INFINITY) - return "-Infinity"; - if (d == 0.0) - return "0"; - - if ((base < 2) || (base > 36)) { - throw Context.reportRuntimeError1( - "msg.bad.radix", Integer.toString(base)); - } - - if (base != 10) { - return DToA.JS_dtobasestr(base, d); - } else { - StringBuffer result = new StringBuffer(); - DToA.JS_dtostr(result, DToA.DTOSTR_STANDARD, 0, d); - return result.toString(); - } - - } - - static String uneval(Context cx, Scriptable scope, Object value) - { - if (value == null) { - return "null"; - } - if (value == Undefined.instance) { - return "undefined"; - } - if (value instanceof String) { - String escaped = escapeString((String)value); - StringBuffer sb = new StringBuffer(escaped.length() + 2); - sb.append('\"'); - sb.append(escaped); - sb.append('\"'); - return sb.toString(); - } - if (value instanceof Number) { - double d = ((Number)value).doubleValue(); - if (d == 0 && 1 / d < 0) { - return "-0"; - } - return toString(d); - } - if (value instanceof Boolean) { - return toString(value); - } - if (value instanceof Scriptable) { - Scriptable obj = (Scriptable)value; - // Wrapped Java objects won't have "toSource" and will report - // errors for get()s of nonexistent name, so use has() first - if (ScriptableObject.hasProperty(obj, "toSource")) { - Object v = ScriptableObject.getProperty(obj, "toSource"); - if (v instanceof Function) { - Function f = (Function)v; - return toString(f.call(cx, scope, obj, emptyArgs)); - } - } - return toString(value); - } - warnAboutNonJSObject(value); - return value.toString(); - } - - static String defaultObjectToSource(Context cx, Scriptable scope, - Scriptable thisObj, Object[] args) - { - boolean toplevel, iterating; - if (cx.iterating == null) { - toplevel = true; - iterating = false; - cx.iterating = new ObjToIntMap(31); - } else { - toplevel = false; - iterating = cx.iterating.has(thisObj); - } - - StringBuffer result = new StringBuffer(128); - if (toplevel) { - result.append("("); - } - result.append('{'); - - // Make sure cx.iterating is set to null when done - // so we don't leak memory - try { - if (!iterating) { - cx.iterating.intern(thisObj); // stop recursion. - Object[] ids = thisObj.getIds(); - for (int i=0; i < ids.length; i++) { - Object id = ids[i]; - Object value; - if (id instanceof Integer) { - int intId = ((Integer)id).intValue(); - value = thisObj.get(intId, thisObj); - if (value == Scriptable.NOT_FOUND) - continue; // a property has been removed - if (i > 0) - result.append(", "); - result.append(intId); - } else { - String strId = (String)id; - value = thisObj.get(strId, thisObj); - if (value == Scriptable.NOT_FOUND) - continue; // a property has been removed - if (i > 0) - result.append(", "); - if (ScriptRuntime.isValidIdentifierName(strId)) { - result.append(strId); - } else { - result.append('\''); - result.append( - ScriptRuntime.escapeString(strId, '\'')); - result.append('\''); - } - } - result.append(':'); - result.append(ScriptRuntime.uneval(cx, scope, value)); - } - } - } finally { - if (toplevel) { - cx.iterating = null; - } - } - - result.append('}'); - if (toplevel) { - result.append(')'); - } - return result.toString(); - } - - public static Scriptable toObject(Scriptable scope, Object val) - { - if (val instanceof Scriptable) { - return (Scriptable)val; - } - return toObject(Context.getContext(), scope, val); - } - - public static Scriptable toObjectOrNull(Context cx, Object obj) - { - if (obj instanceof Scriptable) { - return (Scriptable)obj; - } else if (obj != null && obj != Undefined.instance) { - return toObject(cx, getTopCallScope(cx), obj); - } - return null; - } - - /** - * @deprecated Use {@link #toObject(Scriptable, Object)} instead. - */ - public static Scriptable toObject(Scriptable scope, Object val, - Class staticClass) - { - if (val instanceof Scriptable) { - return (Scriptable)val; - } - return toObject(Context.getContext(), scope, val); - } - - /** - * Convert the value to an object. - * - * See ECMA 9.9. - */ - public static Scriptable toObject(Context cx, Scriptable scope, Object val) - { - if (val instanceof Scriptable) { - return (Scriptable) val; - } - if (val == null) { - throw typeError0("msg.null.to.object"); - } - if (val == Undefined.instance) { - throw typeError0("msg.undef.to.object"); - } - String className = val instanceof String ? "String" : - val instanceof Number ? "Number" : - val instanceof Boolean ? "Boolean" : - null; - if (className != null) { - Object[] args = { val }; - scope = ScriptableObject.getTopLevelScope(scope); - return newObject(cx, scope, className, args); - } - - // Extension: Wrap as a LiveConnect object. - Object wrapped = cx.getWrapFactory().wrap(cx, scope, val, null); - if (wrapped instanceof Scriptable) - return (Scriptable) wrapped; - throw errorWithClassName("msg.invalid.type", val); - } - - /** - * @deprecated Use {@link #toObject(Context, Scriptable, Object)} instead. - */ - public static Scriptable toObject(Context cx, Scriptable scope, Object val, - Class staticClass) - { - return toObject(cx, scope, val); - } - - /** - * @deprecated The method is only present for compatibility. - */ - public static Object call(Context cx, Object fun, Object thisArg, - Object[] args, Scriptable scope) - { - if (!(fun instanceof Function)) { - throw notFunctionError(toString(fun)); - } - Function function = (Function)fun; - Scriptable thisObj = toObjectOrNull(cx, thisArg); - if (thisObj == null) { - throw undefCallError(thisObj, "function"); - } - return function.call(cx, scope, thisObj, args); - } - - public static Scriptable newObject(Context cx, Scriptable scope, - String constructorName, Object[] args) - { - scope = ScriptableObject.getVeryTopLevelScope(scope); // APPJET - Function ctor = getExistingCtor(cx, scope, constructorName); - if (args == null) { args = ScriptRuntime.emptyArgs; } - return ctor.construct(cx, scope, args); - } - - /** - * - * See ECMA 9.4. - */ - public static double toInteger(Object val) { - return toInteger(toNumber(val)); - } - - // convenience method - public static double toInteger(double d) { - // if it's NaN - if (d != d) - return +0.0; - - if (d == 0.0 || - d == Double.POSITIVE_INFINITY || - d == Double.NEGATIVE_INFINITY) - return d; - - if (d > 0.0) - return Math.floor(d); - else - return Math.ceil(d); - } - - public static double toInteger(Object[] args, int index) { - return (index < args.length) ? toInteger(args[index]) : +0.0; - } - - /** - * - * See ECMA 9.5. - */ - public static int toInt32(Object val) - { - // short circuit for common integer values - if (val instanceof Integer) - return ((Integer)val).intValue(); - - return toInt32(toNumber(val)); - } - - public static int toInt32(Object[] args, int index) { - return (index < args.length) ? toInt32(args[index]) : 0; - } - - public static int toInt32(double d) { - int id = (int)d; - if (id == d) { - // This covers -0.0 as well - return id; - } - - if (d != d - || d == Double.POSITIVE_INFINITY - || d == Double.NEGATIVE_INFINITY) - { - return 0; - } - - d = (d >= 0) ? Math.floor(d) : Math.ceil(d); - - double two32 = 4294967296.0; - d = Math.IEEEremainder(d, two32); - // (double)(long)d == d should hold here - - long l = (long)d; - // returning (int)d does not work as d can be outside int range - // but the result must always be 32 lower bits of l - return (int)l; - } - - /** - * See ECMA 9.6. - * @return long value representing 32 bits unsigned integer - */ - public static long toUint32(double d) { - long l = (long)d; - if (l == d) { - // This covers -0.0 as well - return l & 0xffffffffL; - } - - if (d != d - || d == Double.POSITIVE_INFINITY - || d == Double.NEGATIVE_INFINITY) - { - return 0; - } - - d = (d >= 0) ? Math.floor(d) : Math.ceil(d); - - // 0x100000000 gives me a numeric overflow... - double two32 = 4294967296.0; - l = (long)Math.IEEEremainder(d, two32); - - return l & 0xffffffffL; - } - - public static long toUint32(Object val) { - return toUint32(toNumber(val)); - } - - /** - * - * See ECMA 9.7. - */ - public static char toUint16(Object val) { - double d = toNumber(val); - - int i = (int)d; - if (i == d) { - return (char)i; - } - - if (d != d - || d == Double.POSITIVE_INFINITY - || d == Double.NEGATIVE_INFINITY) - { - return 0; - } - - d = (d >= 0) ? Math.floor(d) : Math.ceil(d); - - int int16 = 0x10000; - i = (int)Math.IEEEremainder(d, int16); - - return (char)i; - } - - // XXX: this is until setDefaultNamespace will learn how to store NS - // properly and separates namespace form Scriptable.get etc. - private static final String DEFAULT_NS_TAG = "__default_namespace__"; - - public static Object setDefaultNamespace(Object namespace, Context cx) - { - Scriptable scope = cx.currentActivationCall; - if (scope == null) { - scope = getTopCallScope(cx); - } - - XMLLib xmlLib = currentXMLLib(cx); - Object ns = xmlLib.toDefaultXmlNamespace(cx, namespace); - - // XXX : this should be in separated namesapce from Scriptable.get/put - if (!scope.has(DEFAULT_NS_TAG, scope)) { - // XXX: this is racy of cause - ScriptableObject.defineProperty(scope, DEFAULT_NS_TAG, ns, - ScriptableObject.PERMANENT - | ScriptableObject.DONTENUM); - } else { - scope.put(DEFAULT_NS_TAG, scope, ns); - } - - return Undefined.instance; - } - - public static Object searchDefaultNamespace(Context cx) - { - Scriptable scope = cx.currentActivationCall; - if (scope == null) { - scope = getTopCallScope(cx); - } - Object nsObject; - for (;;) { - Scriptable parent = scope.getParentScope(); - if (parent == null) { - nsObject = ScriptableObject.getProperty(scope, DEFAULT_NS_TAG); - if (nsObject == Scriptable.NOT_FOUND) { - return null; - } - break; - } - nsObject = scope.get(DEFAULT_NS_TAG, scope); - if (nsObject != Scriptable.NOT_FOUND) { - break; - } - scope = parent; - } - return nsObject; - } - - public static Object getTopLevelProp(Scriptable scope, String id) { - scope = ScriptableObject.getTopLevelScope(scope); - return ScriptableObject.getProperty(scope, id); - } - - static Function getExistingCtor(Context cx, Scriptable scope, - String constructorName) - { - Object ctorVal = ScriptableObject.getProperty(scope, constructorName); - if (ctorVal instanceof Function) { - return (Function)ctorVal; - } - if (ctorVal == Scriptable.NOT_FOUND) { - throw Context.reportRuntimeError1( - "msg.ctor.not.found", constructorName); - } else { - throw Context.reportRuntimeError1( - "msg.not.ctor", constructorName); - } - } - - /** - * Return -1L if str is not an index or the index value as lower 32 - * bits of the result. - */ - private static long indexFromString(String str) - { - // The length of the decimal string representation of - // Integer.MAX_VALUE, 2147483647 - final int MAX_VALUE_LENGTH = 10; - - int len = str.length(); - if (len > 0) { - int i = 0; - boolean negate = false; - int c = str.charAt(0); - if (c == '-') { - if (len > 1) { - c = str.charAt(1); - i = 1; - negate = true; - } - } - c -= '0'; - if (0 <= c && c <= 9 - && len <= (negate ? MAX_VALUE_LENGTH + 1 : MAX_VALUE_LENGTH)) - { - // Use negative numbers to accumulate index to handle - // Integer.MIN_VALUE that is greater by 1 in absolute value - // then Integer.MAX_VALUE - int index = -c; - int oldIndex = 0; - i++; - if (index != 0) { - // Note that 00, 01, 000 etc. are not indexes - while (i != len && 0 <= (c = str.charAt(i) - '0') && c <= 9) - { - oldIndex = index; - index = 10 * index - c; - i++; - } - } - // Make sure all characters were consumed and that it couldn't - // have overflowed. - if (i == len && - (oldIndex > (Integer.MIN_VALUE / 10) || - (oldIndex == (Integer.MIN_VALUE / 10) && - c <= (negate ? -(Integer.MIN_VALUE % 10) - : (Integer.MAX_VALUE % 10))))) - { - return 0xFFFFFFFFL & (negate ? index : -index); - } - } - } - return -1L; - } - - /** - * If str is a decimal presentation of Uint32 value, return it as long. - * Othewise return -1L; - */ - public static long testUint32String(String str) - { - // The length of the decimal string representation of - // UINT32_MAX_VALUE, 4294967296 - final int MAX_VALUE_LENGTH = 10; - - int len = str.length(); - if (1 <= len && len <= MAX_VALUE_LENGTH) { - int c = str.charAt(0); - c -= '0'; - if (c == 0) { - // Note that 00,01 etc. are not valid Uint32 presentations - return (len == 1) ? 0L : -1L; - } - if (1 <= c && c <= 9) { - long v = c; - for (int i = 1; i != len; ++i) { - c = str.charAt(i) - '0'; - if (!(0 <= c && c <= 9)) { - return -1; - } - v = 10 * v + c; - } - // Check for overflow - if ((v >>> 32) == 0) { - return v; - } - } - } - return -1; - } - - /** - * If s represents index, then return index value wrapped as Integer - * and othewise return s. - */ - static Object getIndexObject(String s) - { - long indexTest = indexFromString(s); - if (indexTest >= 0) { - return new Integer((int)indexTest); - } - return s; - } - - /** - * If d is exact int value, return its value wrapped as Integer - * and othewise return d converted to String. - */ - static Object getIndexObject(double d) - { - int i = (int)d; - if (i == d) { - return new Integer(i); - } - return toString(d); - } - - /** - * If toString(id) is a decimal presentation of int32 value, then id - * is index. In this case return null and make the index available - * as ScriptRuntime.lastIndexResult(cx). Otherwise return toString(id). - */ - static String toStringIdOrIndex(Context cx, Object id) - { - if (id instanceof Number) { - double d = ((Number)id).doubleValue(); - int index = (int)d; - if (index == d) { - storeIndexResult(cx, index); - return null; - } - return toString(id); - } else { - String s; - if (id instanceof String) { - s = (String)id; - } else { - s = toString(id); - } - long indexTest = indexFromString(s); - if (indexTest >= 0) { - storeIndexResult(cx, (int)indexTest); - return null; - } - return s; - } - } - - /** - * Call obj.[[Get]](id) - */ - public static Object getObjectElem(Object obj, Object elem, Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefReadError(obj, elem); - } - return getObjectElem(sobj, elem, cx); - } - - public static Object getObjectElem(Scriptable obj, Object elem, - Context cx) - { - if (obj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)obj; - return xmlObject.ecmaGet(cx, elem); - } - - Object result; - - String s = toStringIdOrIndex(cx, elem); - if (s == null) { - int index = lastIndexResult(cx); - result = ScriptableObject.getProperty(obj, index); - } else { - result = ScriptableObject.getProperty(obj, s); - } - - if (result == Scriptable.NOT_FOUND) { - result = Undefined.instance; - } - - return result; - } - - /** - * Version of getObjectElem when elem is a valid JS identifier name. - */ - public static Object getObjectProp(Object obj, String property, - Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefReadError(obj, property); - } - return getObjectProp(sobj, property, cx); - } - - public static Object getObjectProp(Scriptable obj, String property, - Context cx) - { - if (obj instanceof XMLObject) { - // TODO: Change XMLObject to just use Scriptable interface - // to avoid paying cost of instanceof check on *every property - // lookup* ! - XMLObject xmlObject = (XMLObject)obj; - return xmlObject.ecmaGet(cx, property); - } - - Object result = ScriptableObject.getProperty(obj, property); - if (result == Scriptable.NOT_FOUND) { - if (cx.hasFeature(Context.FEATURE_STRICT_MODE)) { - Context.reportWarning(ScriptRuntime.getMessage1( - "msg.ref.undefined.prop", property)); - } - result = Undefined.instance; - } - - return result; - } - - public static Object getObjectPropNoWarn(Object obj, String property, - Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefReadError(obj, property); - } - if (obj instanceof XMLObject) { - // TODO: fix as mentioned in note in method above - getObjectProp(sobj, property, cx); - } - Object result = ScriptableObject.getProperty(sobj, property); - if (result == Scriptable.NOT_FOUND) { - return Undefined.instance; - } - return result; - } - - /* - * A cheaper and less general version of the above for well-known argument - * types. - */ - public static Object getObjectIndex(Object obj, double dblIndex, - Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefReadError(obj, toString(dblIndex)); - } - - int index = (int)dblIndex; - if (index == dblIndex) { - return getObjectIndex(sobj, index, cx); - } else { - String s = toString(dblIndex); - return getObjectProp(sobj, s, cx); - } - } - - public static Object getObjectIndex(Scriptable obj, int index, - Context cx) - { - if (obj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)obj; - return xmlObject.ecmaGet(cx, new Integer(index)); - } - - Object result = ScriptableObject.getProperty(obj, index); - if (result == Scriptable.NOT_FOUND) { - result = Undefined.instance; - } - - return result; - } - - /* - * Call obj.[[Put]](id, value) - */ - public static Object setObjectElem(Object obj, Object elem, Object value, - Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefWriteError(obj, elem, value); - } - return setObjectElem(sobj, elem, value, cx); - } - - public static Object setObjectElem(Scriptable obj, Object elem, - Object value, Context cx) - { - if (obj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)obj; - xmlObject.ecmaPut(cx, elem, value); - return value; - } - - String s = toStringIdOrIndex(cx, elem); - if (s == null) { - int index = lastIndexResult(cx); - ScriptableObject.putProperty(obj, index, value); - } else { - ScriptableObject.putProperty(obj, s, value); - } - - return value; - } - - /** - * Version of setObjectElem when elem is a valid JS identifier name. - */ - public static Object setObjectProp(Object obj, String property, - Object value, Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefWriteError(obj, property, value); - } - return setObjectProp(sobj, property, value, cx); - } - - public static Object setObjectProp(Scriptable obj, String property, - Object value, Context cx) - { - if (obj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)obj; - xmlObject.ecmaPut(cx, property, value); - } else { - ScriptableObject.putProperty(obj, property, value); - } - return value; - } - - /* - * A cheaper and less general version of the above for well-known argument - * types. - */ - public static Object setObjectIndex(Object obj, double dblIndex, - Object value, Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw undefWriteError(obj, String.valueOf(dblIndex), value); - } - - int index = (int)dblIndex; - if (index == dblIndex) { - return setObjectIndex(sobj, index, value, cx); - } else { - String s = toString(dblIndex); - return setObjectProp(sobj, s, value, cx); - } - } - - public static Object setObjectIndex(Scriptable obj, int index, Object value, - Context cx) - { - if (obj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)obj; - xmlObject.ecmaPut(cx, new Integer(index), value); - } else { - ScriptableObject.putProperty(obj, index, value); - } - return value; - } - - public static boolean deleteObjectElem(Scriptable target, Object elem, - Context cx) - { - boolean result; - if (target instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)target; - result = xmlObject.ecmaDelete(cx, elem); - } else { - String s = toStringIdOrIndex(cx, elem); - if (s == null) { - int index = lastIndexResult(cx); - result = ScriptableObject.deleteProperty(target, index); - } else { - result = ScriptableObject.deleteProperty(target, s); - } - } - return result; - } - - public static boolean hasObjectElem(Scriptable target, Object elem, - Context cx) - { - boolean result; - - if (target instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)target; - result = xmlObject.ecmaHas(cx, elem); - } else { - String s = toStringIdOrIndex(cx, elem); - if (s == null) { - int index = lastIndexResult(cx); - result = ScriptableObject.hasProperty(target, index); - } else { - result = ScriptableObject.hasProperty(target, s); - } - } - - return result; - } - - public static Object refGet(Ref ref, Context cx) - { - return ref.get(cx); - } - - public static Object refSet(Ref ref, Object value, Context cx) - { - return ref.set(cx, value); - } - - public static Object refDel(Ref ref, Context cx) - { - return wrapBoolean(ref.delete(cx)); - } - - static boolean isSpecialProperty(String s) - { - return s.equals("__proto__") || s.equals("__parent__"); - } - - public static Ref specialRef(Object obj, String specialProperty, - Context cx) - { - return SpecialRef.createSpecial(cx, obj, specialProperty); - } - - /** - * The delete operator - * - * See ECMA 11.4.1 - * - * In ECMA 0.19, the description of the delete operator (11.4.1) - * assumes that the [[Delete]] method returns a value. However, - * the definition of the [[Delete]] operator (8.6.2.5) does not - * define a return value. Here we assume that the [[Delete]] - * method doesn't return a value. - */ - public static Object delete(Object obj, Object id, Context cx) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - String idStr = (id == null) ? "null" : id.toString(); - throw typeError2("msg.undef.prop.delete", toString(obj), idStr); - } - boolean result = deleteObjectElem(sobj, id, cx); - return wrapBoolean(result); - } - - /** - * Looks up a name in the scope chain and returns its value. - */ - public static Object name(Context cx, Scriptable scope, String name) - { - Scriptable parent = scope.getParentScope(); - if (parent == null) { - Object result = topScopeName(cx, scope, name); - if (result == Scriptable.NOT_FOUND) { - throw notFoundError(scope, name); - } - return result; - } - - return nameOrFunction(cx, scope, parent, name, false); - } - - private static Object nameOrFunction(Context cx, Scriptable scope, - Scriptable parentScope, String name, - boolean asFunctionCall) - { - Object result; - Scriptable thisObj = scope; // It is used only if asFunctionCall==true. - - XMLObject firstXMLObject = null; - for (;;) { - if (scope instanceof NativeWith) { - Scriptable withObj = scope.getPrototype(); - if (withObj instanceof XMLObject) { - XMLObject xmlObj = (XMLObject)withObj; - if (xmlObj.ecmaHas(cx, name)) { - // function this should be the target object of with - thisObj = xmlObj; - result = xmlObj.ecmaGet(cx, name); - break; - } - if (firstXMLObject == null) { - firstXMLObject = xmlObj; - } - } else { - result = ScriptableObject.getProperty(withObj, name); - if (result != Scriptable.NOT_FOUND) { - // function this should be the target object of with - thisObj = withObj; - break; - } - } - } else if (scope instanceof NativeCall) { - // NativeCall does not prototype chain and Scriptable.get - // can be called directly. - result = scope.get(name, scope); - if (result != Scriptable.NOT_FOUND) { - if (asFunctionCall) { - // ECMA 262 requires that this for nested funtions - // should be top scope - thisObj = ScriptableObject. - getTopLevelScope(parentScope); - } - break; - } - } else { - // Can happen if Rhino embedding decided that nested - // scopes are useful for what ever reasons. - result = ScriptableObject.getProperty(scope, name); - if (result != Scriptable.NOT_FOUND) { - thisObj = scope; - break; - } - } - scope = parentScope; - parentScope = parentScope.getParentScope(); - if (parentScope == null) { - result = topScopeName(cx, scope, name); - if (result == Scriptable.NOT_FOUND) { - if (firstXMLObject == null || asFunctionCall) { - throw notFoundError(scope, name); - } - // The name was not found, but we did find an XML - // object in the scope chain and we are looking for name, - // not function. The result should be an empty XMLList - // in name context. - result = firstXMLObject.ecmaGet(cx, name); - } - // For top scope thisObj for functions is always scope itself. - thisObj = scope; - break; - } - } - - if (asFunctionCall) { - if (!(result instanceof Callable)) { - throw notFunctionError(result, name); - } - storeScriptable(cx, thisObj); - } - - return result; - } - - private static Object topScopeName(Context cx, Scriptable scope, - String name) - { - if (cx.useDynamicScope) { - scope = checkDynamicScope(cx.topCallScope, scope); - } - return ScriptableObject.getProperty(scope, name); - } - - - /** - * Returns the object in the scope chain that has a given property. - * - * The order of evaluation of an assignment expression involves - * evaluating the lhs to a reference, evaluating the rhs, and then - * modifying the reference with the rhs value. This method is used - * to 'bind' the given name to an object containing that property - * so that the side effects of evaluating the rhs do not affect - * which property is modified. - * Typically used in conjunction with setName. - * - * See ECMA 10.1.4 - */ - public static Scriptable bind(Context cx, Scriptable scope, String id) - { - Scriptable firstXMLObject = null; - Scriptable parent = scope.getParentScope(); - childScopesChecks: if (parent != null) { - // Check for possibly nested "with" scopes first - while (scope instanceof NativeWith) { - Scriptable withObj = scope.getPrototype(); - if (withObj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)withObj; - if (xmlObject.ecmaHas(cx, id)) { - return xmlObject; - } - if (firstXMLObject == null) { - firstXMLObject = xmlObject; - } - } else { - if (ScriptableObject.hasProperty(withObj, id)) { - return withObj; - } - } - scope = parent; - parent = parent.getParentScope(); - if (parent == null) { - break childScopesChecks; - } - } - for (;;) { - if (ScriptableObject.hasProperty(scope, id)) { - return scope; - } - scope = parent; - parent = parent.getParentScope(); - if (parent == null) { - break childScopesChecks; - } - } - } - // scope here is top scope - if (cx.useDynamicScope) { - scope = checkDynamicScope(cx.topCallScope, scope); - } - if (ScriptableObject.hasProperty(scope, id)) { - return scope; - } - // Nothing was found, but since XML objects always bind - // return one if found - return firstXMLObject; - } - - public static Object setName(Scriptable bound, Object value, - Context cx, Scriptable scope, String id) - { - if (bound != null) { - if (bound instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)bound; - xmlObject.ecmaPut(cx, id, value); - } else { - ScriptableObject.putProperty(bound, id, value); - } - } else { - // "newname = 7;", where 'newname' has not yet - // been defined, creates a new property in the - // top scope unless strict mode is specified. - if (cx.hasFeature(Context.FEATURE_STRICT_MODE) || - cx.hasFeature(Context.FEATURE_STRICT_VARS)) - { - Context.reportWarning( - ScriptRuntime.getMessage1("msg.assn.create.strict", id)); - } - // Find the top scope by walking up the scope chain. - bound = ScriptableObject.getTopLevelScope(scope); - if (cx.useDynamicScope) { - bound = checkDynamicScope(cx.topCallScope, bound); - } - bound.put(id, bound, value); - } - return value; - } - - public static Object setConst(Scriptable bound, Object value, - Context cx, String id) - { - if (bound instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)bound; - xmlObject.ecmaPut(cx, id, value); - } else { - ScriptableObject.putConstProperty(bound, id, value); - } - return value; - } - - /** - * This is the enumeration needed by the for..in statement. - * - * See ECMA 12.6.3. - * - * IdEnumeration maintains a ObjToIntMap to make sure a given - * id is enumerated only once across multiple objects in a - * prototype chain. - * - * XXX - ECMA delete doesn't hide properties in the prototype, - * but js/ref does. This means that the js/ref for..in can - * avoid maintaining a hash table and instead perform lookups - * to see if a given property has already been enumerated. - * - */ - private static class IdEnumeration implements Serializable - { - private static final long serialVersionUID = 1L; - Scriptable obj; - Object[] ids; - int index; - ObjToIntMap used; - Object currentId; - int enumType; /* one of ENUM_INIT_KEYS, ENUM_INIT_VALUES, - ENUM_INIT_ARRAY */ - - // if true, integer ids will be returned as numbers rather than strings - boolean enumNumbers; - - Scriptable iterator; - } - - public static Scriptable toIterator(Context cx, Scriptable scope, - Scriptable obj, boolean keyOnly) - { - /*APPJET 1.6*//* - if (ScriptableObject.hasProperty(obj, - NativeIterator.ITERATOR_PROPERTY_NAME)) - { - Object v = ScriptableObject.getProperty(obj, - NativeIterator.ITERATOR_PROPERTY_NAME); - if (!(v instanceof Callable)) { - throw typeError0("msg.invalid.iterator"); - } - Callable f = (Callable) v; - Object[] args = new Object[] { keyOnly ? Boolean.TRUE - : Boolean.FALSE }; - v = f.call(cx, scope, obj, args); - if (!(v instanceof Scriptable)) { - throw typeError0("msg.iterator.primitive"); - } - return (Scriptable) v; - }*/ - return null; - } - - // for backwards compatibility with generated class files - public static Object enumInit(Object value, Context cx, boolean enumValues) - { - return enumInit(value, cx, enumValues ? ENUMERATE_VALUES - : ENUMERATE_KEYS); - } - - public static final int ENUMERATE_KEYS = 0; - public static final int ENUMERATE_VALUES = 1; - public static final int ENUMERATE_ARRAY = 2; - public static final int ENUMERATE_KEYS_NO_ITERATOR = 3; - public static final int ENUMERATE_VALUES_NO_ITERATOR = 4; - public static final int ENUMERATE_ARRAY_NO_ITERATOR = 5; - - public static Object enumInit(Object value, Context cx, int enumType) - { - IdEnumeration x = new IdEnumeration(); - x.obj = toObjectOrNull(cx, value); - if (x.obj == null) { - // null or undefined do not cause errors but rather lead to empty - // "for in" loop - return x; - } - x.enumType = enumType; - x.iterator = null; - if (enumType != ENUMERATE_KEYS_NO_ITERATOR && - enumType != ENUMERATE_VALUES_NO_ITERATOR && - enumType != ENUMERATE_ARRAY_NO_ITERATOR) - { - x.iterator = toIterator(cx, x.obj.getParentScope(), x.obj, true); - } - if (x.iterator == null) { - // enumInit should read all initial ids before returning - // or "for (a.i in a)" would wrongly enumerate i in a as well - enumChangeObject(x); - } - - return x; - } - - public static void setEnumNumbers(Object enumObj, boolean enumNumbers) { - ((IdEnumeration)enumObj).enumNumbers = enumNumbers; - } - - public static Boolean enumNext(Object enumObj) - { - IdEnumeration x = (IdEnumeration)enumObj; - if (x.iterator != null) { - Object v = ScriptableObject.getProperty(x.iterator, "next"); - if (!(v instanceof Callable)) - return Boolean.FALSE; - Callable f = (Callable) v; - Context cx = Context.enter(); - try { - x.currentId = f.call(cx, x.iterator.getParentScope(), - x.iterator, emptyArgs); - return Boolean.TRUE; - } catch (JavaScriptException e) { - if (e.getValue() instanceof NativeIterator.StopIteration) { - return Boolean.FALSE; - } - throw e; - } finally { - Context.exit(); - } - } - for (;;) { - if (x.obj == null) { - return Boolean.FALSE; - } - if (x.index == x.ids.length) { - x.obj = x.obj.getPrototype(); - enumChangeObject(x); - continue; - } - Object id = x.ids[x.index++]; - if (x.used != null && x.used.has(id)) { - continue; - } - if (id instanceof String) { - String strId = (String)id; - if (!x.obj.has(strId, x.obj)) - continue; // must have been deleted - x.currentId = strId; - } else { - int intId = ((Number)id).intValue(); - if (!x.obj.has(intId, x.obj)) - continue; // must have been deleted - x.currentId = x.enumNumbers ? (Object) (new Integer(intId)) - : String.valueOf(intId); - } - return Boolean.TRUE; - } - } - - public static Object enumId(Object enumObj, Context cx) - { - IdEnumeration x = (IdEnumeration)enumObj; - if (x.iterator != null) { - return x.currentId; - } - switch (x.enumType) { - case ENUMERATE_KEYS: - case ENUMERATE_KEYS_NO_ITERATOR: - return x.currentId; - case ENUMERATE_VALUES: - case ENUMERATE_VALUES_NO_ITERATOR: - return enumValue(enumObj, cx); - case ENUMERATE_ARRAY: - case ENUMERATE_ARRAY_NO_ITERATOR: - Object[] elements = { x.currentId, enumValue(enumObj, cx) }; - return cx.newArray(x.obj.getParentScope(), elements); - default: - throw Kit.codeBug(); - } - } - - public static Object enumValue(Object enumObj, Context cx) { - IdEnumeration x = (IdEnumeration)enumObj; - - Object result; - - String s = toStringIdOrIndex(cx, x.currentId); - if (s == null) { - int index = lastIndexResult(cx); - result = x.obj.get(index, x.obj); - } else { - result = x.obj.get(s, x.obj); - } - - return result; - } - - private static void enumChangeObject(IdEnumeration x) - { - Object[] ids = null; - while (x.obj != null) { - ids = x.obj.getIds(); - if (ids.length != 0) { - break; - } - x.obj = x.obj.getPrototype(); - } - if (x.obj != null && x.ids != null) { - Object[] previous = x.ids; - int L = previous.length; - if (x.used == null) { - x.used = new ObjToIntMap(L); - } - for (int i = 0; i != L; ++i) { - x.used.intern(previous[i]); - } - } - x.ids = ids; - x.index = 0; - } - - /** - * Prepare for calling name(...): return function corresponding to - * name and make current top scope available - * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj. - * The caller must call ScriptRuntime.lastStoredScriptable() immediately - * after calling this method. - */ - public static Callable getNameFunctionAndThis(String name, - Context cx, - Scriptable scope) - { - Scriptable parent = scope.getParentScope(); - if (parent == null) { - Object result = topScopeName(cx, scope, name); - if (!(result instanceof Callable)) { - if (result == Scriptable.NOT_FOUND) { - throw notFoundError(scope, name); - } else { - throw notFunctionError(result, name); - } - } - // Top scope is not NativeWith or NativeCall => thisObj == scope - Scriptable thisObj = scope; - storeScriptable(cx, thisObj); - return (Callable)result; - } - - // name will call storeScriptable(cx, thisObj); - return (Callable)nameOrFunction(cx, scope, parent, name, true); - } - - /** - * Prepare for calling obj[id](...): return function corresponding to - * obj[id] and make obj properly converted to Scriptable available - * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj. - * The caller must call ScriptRuntime.lastStoredScriptable() immediately - * after calling this method. - */ - public static Callable getElemFunctionAndThis(Object obj, - Object elem, - Context cx) - { - String s = toStringIdOrIndex(cx, elem); - if (s != null) { - return getPropFunctionAndThis(obj, s, cx); - } - int index = lastIndexResult(cx); - - Scriptable thisObj = toObjectOrNull(cx, obj); - if (thisObj == null) { - throw undefCallError(obj, String.valueOf(index)); - } - - Object value; - for (;;) { - // Ignore XML lookup as requred by ECMA 357, 11.2.2.1 - value = ScriptableObject.getProperty(thisObj, index); - if (value != Scriptable.NOT_FOUND) { - break; - } - if (!(thisObj instanceof XMLObject)) { - break; - } - XMLObject xmlObject = (XMLObject)thisObj; - Scriptable extra = xmlObject.getExtraMethodSource(cx); - if (extra == null) { - break; - } - thisObj = extra; - } - if (!(value instanceof Callable)) { - throw notFunctionError(value, elem); - } - - storeScriptable(cx, thisObj); - return (Callable)value; - } - - /** - * Prepare for calling obj.property(...): return function corresponding to - * obj.property and make obj properly converted to Scriptable available - * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj. - * The caller must call ScriptRuntime.lastStoredScriptable() immediately - * after calling this method. - */ - public static Callable getPropFunctionAndThis(Object obj, - String property, - Context cx) - { - Scriptable thisObj = toObjectOrNull(cx, obj); - if (thisObj == null) { - throw undefCallError(obj, property); - } - - Object value; - for (;;) { - // Ignore XML lookup as required by ECMA 357, 11.2.2.1 - value = ScriptableObject.getProperty(thisObj, property); - if (value != Scriptable.NOT_FOUND) { - break; - } - if (!(thisObj instanceof XMLObject)) { - break; - } - XMLObject xmlObject = (XMLObject)thisObj; - Scriptable extra = xmlObject.getExtraMethodSource(cx); - if (extra == null) { - break; - } - thisObj = extra; - } - - if (!(value instanceof Callable)) { - Object noSuchMethod = ScriptableObject.getProperty(thisObj, "__noSuchMethod__"); - if (noSuchMethod instanceof Callable) - value = new NoSuchMethodShim((Callable)noSuchMethod, property); - else - throw notFunctionError(thisObj, value, property); - } - - storeScriptable(cx, thisObj); - return (Callable)value; - } - - /** - * Prepare for calling <expression>(...): return function corresponding to - * <expression> and make parent scope of the function available - * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj. - * The caller must call ScriptRuntime.lastStoredScriptable() immediately - * after calling this method. - */ - public static Callable getValueFunctionAndThis(Object value, Context cx) - { - if (!(value instanceof Callable)) { - throw notFunctionError(value); - } - - Callable f = (Callable)value; - Scriptable thisObj = null; - if (f instanceof Scriptable) { - thisObj = ((Scriptable)f).getParentScope(); - } - if (thisObj == null) { - if (cx.topCallScope == null) throw new IllegalStateException(); - thisObj = cx.topCallScope; - } - if (thisObj.getParentScope() != null) { - if (thisObj instanceof NativeWith) { - // functions defined inside with should have with target - // as their thisObj - } else if (thisObj instanceof NativeCall) { - // nested functions should have top scope as their thisObj - thisObj = ScriptableObject.getTopLevelScope(thisObj); - } - } - storeScriptable(cx, thisObj); - return f; - } - - /** - * Perform function call in reference context. Should always - * return value that can be passed to - * {@link #refGet(Ref, Context)} or {@link #refSet(Ref, Object, Context)} - * arbitrary number of times. - * The args array reference should not be stored in any object that is - * can be GC-reachable after this method returns. If this is necessary, - * store args.clone(), not args array itself. - */ - public static Ref callRef(Callable function, Scriptable thisObj, - Object[] args, Context cx) - { - if (function instanceof RefCallable) { - RefCallable rfunction = (RefCallable)function; - Ref ref = rfunction.refCall(cx, thisObj, args); - if (ref == null) { - throw new IllegalStateException(rfunction.getClass().getName()+".refCall() returned null"); - } - return ref; - } - // No runtime support for now - String msg = getMessage1("msg.no.ref.from.function", - toString(function)); - throw constructError("ReferenceError", msg); - } - - /** - * Operator new. - * - * See ECMA 11.2.2 - */ - public static Scriptable newObject(Object fun, Context cx, - Scriptable scope, Object[] args) - { - if (!(fun instanceof Function)) { - throw notFunctionError(fun); - } - Function function = (Function)fun; - return function.construct(cx, scope, args); - } - - public static Object callSpecial(Context cx, Callable fun, - Scriptable thisObj, - Object[] args, Scriptable scope, - Scriptable callerThis, int callType, - String filename, int lineNumber) - { - if (callType == Node.SPECIALCALL_EVAL) { - if (NativeGlobal.isEvalFunction(fun)) { - return evalSpecial(cx, scope, callerThis, args, - filename, lineNumber); - } - } else if (callType == Node.SPECIALCALL_WITH) { - if (NativeWith.isWithFunction(fun)) { - throw Context.reportRuntimeError1("msg.only.from.new", - "With"); - } - } else { - throw Kit.codeBug(); - } - - return fun.call(cx, scope, thisObj, args); - } - - public static Object newSpecial(Context cx, Object fun, - Object[] args, Scriptable scope, - int callType) - { - if (callType == Node.SPECIALCALL_EVAL) { - if (NativeGlobal.isEvalFunction(fun)) { - throw typeError1("msg.not.ctor", "eval"); - } - } else if (callType == Node.SPECIALCALL_WITH) { - if (NativeWith.isWithFunction(fun)) { - return NativeWith.newWithSpecial(cx, scope, args); - } - } else { - throw Kit.codeBug(); - } - - return newObject(fun, cx, scope, args); - } - - /** - * Function.prototype.apply and Function.prototype.call - * - * See Ecma 15.3.4.[34] - */ - public static Object applyOrCall(boolean isApply, - Context cx, Scriptable scope, - Scriptable thisObj, Object[] args) - { - int L = args.length; - Callable function = getCallable(thisObj); - - Scriptable callThis = null; - if (L != 0) { - callThis = toObjectOrNull(cx, args[0]); - } - if (callThis == null) { - // This covers the case of args[0] == (null|undefined) as well. - callThis = getTopCallScope(cx); - } - - Object[] callArgs; - if (isApply) { - // Follow Ecma 15.3.4.3 - callArgs = L <= 1 ? ScriptRuntime.emptyArgs : - getApplyArguments(cx, args[1]); - } else { - // Follow Ecma 15.3.4.4 - if (L <= 1) { - callArgs = ScriptRuntime.emptyArgs; - } else { - callArgs = new Object[L - 1]; - System.arraycopy(args, 1, callArgs, 0, L - 1); - } - } - - return function.call(cx, scope, callThis, callArgs); - } - - static Object[] getApplyArguments(Context cx, Object arg1) - { - if (arg1 == null || arg1 == Undefined.instance) { - return ScriptRuntime.emptyArgs; - } else if (arg1 instanceof NativeArray || arg1 instanceof Arguments) { - return cx.getElements((Scriptable) arg1); - } else { - throw ScriptRuntime.typeError0("msg.arg.isnt.array"); - } - } - - static Callable getCallable(Scriptable thisObj) - { - Callable function; - if (thisObj instanceof Callable) { - function = (Callable)thisObj; - } else { - Object value = thisObj.getDefaultValue(ScriptRuntime.FunctionClass); - if (!(value instanceof Callable)) { - throw ScriptRuntime.notFunctionError(value, thisObj); - } - function = (Callable)value; - } - return function; - } - - /** - * The eval function property of the global object. - * - * See ECMA 15.1.2.1 - */ - public static Object evalSpecial(Context cx, Scriptable scope, - Object thisArg, Object[] args, - String filename, int lineNumber) - { - if (args.length < 1) - return Undefined.instance; - Object x = args[0]; - if (!(x instanceof String)) { - if (cx.hasFeature(Context.FEATURE_STRICT_MODE) || - cx.hasFeature(Context.FEATURE_STRICT_EVAL)) - { - throw Context.reportRuntimeError0("msg.eval.nonstring.strict"); - } - String message = ScriptRuntime.getMessage0("msg.eval.nonstring"); - Context.reportWarning(message); - return x; - } - if (filename == null) { - int[] linep = new int[1]; - filename = Context.getSourcePositionFromStack(linep); - if (filename != null) { - lineNumber = linep[0]; - } else { - filename = ""; - } - } - String sourceName = ScriptRuntime. - makeUrlForGeneratedScript(true, filename, lineNumber); - - ErrorReporter reporter; - reporter = DefaultErrorReporter.forEval(cx.getErrorReporter()); - - Evaluator evaluator = Context.createInterpreter(); - if (evaluator == null) { - throw new JavaScriptException("Interpreter not present", - filename, lineNumber); - } - - // Compile with explicit interpreter instance to force interpreter - // mode. - Script script = cx.compileString((String)x, evaluator, - reporter, sourceName, 1, null); - evaluator.setEvalScriptFlag(script); - Callable c = (Callable)script; - return c.call(cx, scope, (Scriptable)thisArg, ScriptRuntime.emptyArgs); - } - - /** - * The typeof operator - */ - public static String typeof(Object value) - { - if (value == null) - return "object"; - if (value == Undefined.instance) - return "undefined"; - if (value instanceof Scriptable) - { - if (value instanceof ScriptableObject && - ((ScriptableObject)value).avoidObjectDetection()) - { - return "undefined"; - } - if (value instanceof XMLObject) - return "xml"; - return (value instanceof Callable) ? "function" : "object"; - } - if (value instanceof String) - return "string"; - if (value instanceof Number) - return "number"; - if (value instanceof Boolean) - return "boolean"; - throw errorWithClassName("msg.invalid.type", value); - } - - /** - * The typeof operator that correctly handles the undefined case - */ - public static String typeofName(Scriptable scope, String id) - { - Context cx = Context.getContext(); - Scriptable val = bind(cx, scope, id); - if (val == null) - return "undefined"; - return typeof(getObjectProp(val, id, cx)); - } - - // neg: - // implement the '-' operator inline in the caller - // as "-toNumber(val)" - - // not: - // implement the '!' operator inline in the caller - // as "!toBoolean(val)" - - // bitnot: - // implement the '~' operator inline in the caller - // as "~toInt32(val)" - - public static Object add(Object val1, Object val2, Context cx) - { - if(val1 instanceof Number && val2 instanceof Number) { - return wrapNumber(((Number)val1).doubleValue() + - ((Number)val2).doubleValue()); - } - if (val1 instanceof XMLObject) { - Object test = ((XMLObject)val1).addValues(cx, true, val2); - if (test != Scriptable.NOT_FOUND) { - return test; - } - } - if (val2 instanceof XMLObject) { - Object test = ((XMLObject)val2).addValues(cx, false, val1); - if (test != Scriptable.NOT_FOUND) { - return test; - } - } - if (val1 instanceof Scriptable) - val1 = ((Scriptable) val1).getDefaultValue(null); - if (val2 instanceof Scriptable) - val2 = ((Scriptable) val2).getDefaultValue(null); - if (!(val1 instanceof String) && !(val2 instanceof String)) - if ((val1 instanceof Number) && (val2 instanceof Number)) - return wrapNumber(((Number)val1).doubleValue() + - ((Number)val2).doubleValue()); - else - return wrapNumber(toNumber(val1) + toNumber(val2)); - return toString(val1).concat(toString(val2)); - } - - public static String add(String val1, Object val2) { - return val1.concat(toString(val2)); - } - - public static String add(Object val1, String val2) { - return toString(val1).concat(val2); - } - - /** - * @deprecated The method is only present for compatibility. - */ - public static Object nameIncrDecr(Scriptable scopeChain, String id, - int incrDecrMask) - { - return nameIncrDecr(scopeChain, id, Context.getContext(), incrDecrMask); - } - - public static Object nameIncrDecr(Scriptable scopeChain, String id, - Context cx, int incrDecrMask) - { - Scriptable target; - Object value; - search: { - do { - if (cx.useDynamicScope && scopeChain.getParentScope() == null) { - scopeChain = checkDynamicScope(cx.topCallScope, scopeChain); - } - target = scopeChain; - do { - value = target.get(id, scopeChain); - if (value != Scriptable.NOT_FOUND) { - break search; - } - target = target.getPrototype(); - } while (target != null); - scopeChain = scopeChain.getParentScope(); - } while (scopeChain != null); - throw notFoundError(scopeChain, id); - } - return doScriptableIncrDecr(target, id, scopeChain, value, - incrDecrMask); - } - - public static Object propIncrDecr(Object obj, String id, - Context cx, int incrDecrMask) - { - Scriptable start = toObjectOrNull(cx, obj); - if (start == null) { - throw undefReadError(obj, id); - } - - Scriptable target = start; - Object value; - search: { - do { - value = target.get(id, start); - if (value != Scriptable.NOT_FOUND) { - break search; - } - target = target.getPrototype(); - } while (target != null); - start.put(id, start, NaNobj); - return NaNobj; - } - return doScriptableIncrDecr(target, id, start, value, - incrDecrMask); - } - - private static Object doScriptableIncrDecr(Scriptable target, - String id, - Scriptable protoChainStart, - Object value, - int incrDecrMask) - { - boolean post = ((incrDecrMask & Node.POST_FLAG) != 0); - double number; - if (value instanceof Number) { - number = ((Number)value).doubleValue(); - } else { - number = toNumber(value); - if (post) { - // convert result to number - value = wrapNumber(number); - } - } - if ((incrDecrMask & Node.DECR_FLAG) == 0) { - ++number; - } else { - --number; - } - Number result = wrapNumber(number); - target.put(id, protoChainStart, result); - if (post) { - return value; - } else { - return result; - } - } - - public static Object elemIncrDecr(Object obj, Object index, - Context cx, int incrDecrMask) - { - Object value = getObjectElem(obj, index, cx); - boolean post = ((incrDecrMask & Node.POST_FLAG) != 0); - double number; - if (value instanceof Number) { - number = ((Number)value).doubleValue(); - } else { - number = toNumber(value); - if (post) { - // convert result to number - value = wrapNumber(number); - } - } - if ((incrDecrMask & Node.DECR_FLAG) == 0) { - ++number; - } else { - --number; - } - Number result = wrapNumber(number); - setObjectElem(obj, index, result, cx); - if (post) { - return value; - } else { - return result; - } - } - - public static Object refIncrDecr(Ref ref, Context cx, int incrDecrMask) - { - Object value = ref.get(cx); - boolean post = ((incrDecrMask & Node.POST_FLAG) != 0); - double number; - if (value instanceof Number) { - number = ((Number)value).doubleValue(); - } else { - number = toNumber(value); - if (post) { - // convert result to number - value = wrapNumber(number); - } - } - if ((incrDecrMask & Node.DECR_FLAG) == 0) { - ++number; - } else { - --number; - } - Number result = wrapNumber(number); - ref.set(cx, result); - if (post) { - return value; - } else { - return result; - } - } - - private static Object toPrimitive(Object val) - { - if (!(val instanceof Scriptable)) { - return val; - } - Scriptable s = (Scriptable)val; - Object result = s.getDefaultValue(null); - if (result instanceof Scriptable) - throw typeError0("msg.bad.default.value"); - return result; - } - - /** - * Equality - * - * See ECMA 11.9 - */ - public static boolean eq(Object x, Object y) - { - if (x == null || x == Undefined.instance) { - if (y == null || y == Undefined.instance) { - return true; - } - if (y instanceof ScriptableObject) { - Object test = ((ScriptableObject)y).equivalentValues(x); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - return false; - } else if (x instanceof Number) { - return eqNumber(((Number)x).doubleValue(), y); - } else if (x instanceof String) { - return eqString((String)x, y); - } else if (x instanceof Boolean) { - boolean b = ((Boolean)x).booleanValue(); - if (y instanceof Boolean) { - return b == ((Boolean)y).booleanValue(); - } - if (y instanceof ScriptableObject) { - Object test = ((ScriptableObject)y).equivalentValues(x); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - return eqNumber(b ? 1.0 : 0.0, y); - } else if (x instanceof Scriptable) { - if (y instanceof Scriptable) { - if (x == y) { - return true; - } - if (x instanceof ScriptableObject) { - Object test = ((ScriptableObject)x).equivalentValues(y); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - if (y instanceof ScriptableObject) { - Object test = ((ScriptableObject)y).equivalentValues(x); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - if (x instanceof Wrapper && y instanceof Wrapper) { - // See bug 413838. Effectively an extension to ECMA for - // the LiveConnect case. - Object unwrappedX = ((Wrapper)x).unwrap(); - Object unwrappedY = ((Wrapper)y).unwrap(); - return unwrappedX == unwrappedY || - (isPrimitive(unwrappedX) && - isPrimitive(unwrappedY) && - eq(unwrappedX, unwrappedY)); - } - return false; - } else if (y instanceof Boolean) { - if (x instanceof ScriptableObject) { - Object test = ((ScriptableObject)x).equivalentValues(y); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - double d = ((Boolean)y).booleanValue() ? 1.0 : 0.0; - return eqNumber(d, x); - } else if (y instanceof Number) { - return eqNumber(((Number)y).doubleValue(), x); - } else if (y instanceof String) { - return eqString((String)y, x); - } - // covers the case when y == Undefined.instance as well - return false; - } else { - warnAboutNonJSObject(x); - return x == y; - } - } - - private static boolean isPrimitive(Object obj) { - return (obj instanceof Number) || (obj instanceof String) || - (obj instanceof Boolean); - } - - static boolean eqNumber(double x, Object y) - { - for (;;) { - if (y == null || y == Undefined.instance) { - return false; - } else if (y instanceof Number) { - return x == ((Number)y).doubleValue(); - } else if (y instanceof String) { - return x == toNumber(y); - } else if (y instanceof Boolean) { - return x == (((Boolean)y).booleanValue() ? 1.0 : +0.0); - } else if (y instanceof Scriptable) { - if (y instanceof ScriptableObject) { - Object xval = wrapNumber(x); - Object test = ((ScriptableObject)y).equivalentValues(xval); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - y = toPrimitive(y); - } else { - warnAboutNonJSObject(y); - return false; - } - } - } - - private static boolean eqString(String x, Object y) - { - for (;;) { - if (y == null || y == Undefined.instance) { - return false; - } else if (y instanceof String) { - return x.equals(y); - } else if (y instanceof Number) { - return toNumber(x) == ((Number)y).doubleValue(); - } else if (y instanceof Boolean) { - return toNumber(x) == (((Boolean)y).booleanValue() ? 1.0 : 0.0); - } else if (y instanceof Scriptable) { - if (y instanceof ScriptableObject) { - Object test = ((ScriptableObject)y).equivalentValues(x); - if (test != Scriptable.NOT_FOUND) { - return ((Boolean)test).booleanValue(); - } - } - y = toPrimitive(y); - continue; - } else { - warnAboutNonJSObject(y); - return false; - } - } - } - public static boolean shallowEq(Object x, Object y) - { - if (x == y) { - if (!(x instanceof Number)) { - return true; - } - // NaN check - double d = ((Number)x).doubleValue(); - return d == d; - } - if (x == null || x == Undefined.instance) { - return false; - } else if (x instanceof Number) { - if (y instanceof Number) { - return ((Number)x).doubleValue() == ((Number)y).doubleValue(); - } - } else if (x instanceof String) { - if (y instanceof String) { - return x.equals(y); - } - } else if (x instanceof Boolean) { - if (y instanceof Boolean) { - return x.equals(y); - } - } else if (x instanceof Scriptable) { - if (x instanceof Wrapper && y instanceof Wrapper) { - return ((Wrapper)x).unwrap() == ((Wrapper)y).unwrap(); - } - } else { - warnAboutNonJSObject(x); - return x == y; - } - return false; - } - - /** - * The instanceof operator. - * - * @return a instanceof b - */ - public static boolean instanceOf(Object a, Object b, Context cx) - { - // Check RHS is an object - if (! (b instanceof Scriptable)) { - throw typeError0("msg.instanceof.not.object"); - } - - // for primitive values on LHS, return false - // XXX we may want to change this so that - // 5 instanceof Number == true - if (! (a instanceof Scriptable)) - return false; - - return ((Scriptable)b).hasInstance((Scriptable)a); - } - - /** - * Delegates to - * - * @return true iff rhs appears in lhs' proto chain - */ - public static boolean jsDelegatesTo(Scriptable lhs, Scriptable rhs) { - Scriptable proto = lhs.getPrototype(); - - while (proto != null) { - if (proto.equals(rhs)) return true; - proto = proto.getPrototype(); - } - - return false; - } - - /** - * The in operator. - * - * This is a new JS 1.3 language feature. The in operator mirrors - * the operation of the for .. in construct, and tests whether the - * rhs has the property given by the lhs. It is different from the - * for .. in construct in that: - * <BR> - it doesn't perform ToObject on the right hand side - * <BR> - it returns true for DontEnum properties. - * @param a the left hand operand - * @param b the right hand operand - * - * @return true if property name or element number a is a property of b - */ - public static boolean in(Object a, Object b, Context cx) - { - if (!(b instanceof Scriptable)) { - throw typeError0("msg.instanceof.not.object"); - } - - return hasObjectElem((Scriptable)b, a, cx); - } - - public static boolean cmp_LT(Object val1, Object val2) - { - double d1, d2; - if (val1 instanceof Number && val2 instanceof Number) { - d1 = ((Number)val1).doubleValue(); - d2 = ((Number)val2).doubleValue(); - } else { - if (val1 instanceof Scriptable) - val1 = ((Scriptable) val1).getDefaultValue(NumberClass); - if (val2 instanceof Scriptable) - val2 = ((Scriptable) val2).getDefaultValue(NumberClass); - if (val1 instanceof String && val2 instanceof String) { - return ((String)val1).compareTo((String)val2) < 0; - } - d1 = toNumber(val1); - d2 = toNumber(val2); - } - return d1 < d2; - } - - public static boolean cmp_LE(Object val1, Object val2) - { - double d1, d2; - if (val1 instanceof Number && val2 instanceof Number) { - d1 = ((Number)val1).doubleValue(); - d2 = ((Number)val2).doubleValue(); - } else { - if (val1 instanceof Scriptable) - val1 = ((Scriptable) val1).getDefaultValue(NumberClass); - if (val2 instanceof Scriptable) - val2 = ((Scriptable) val2).getDefaultValue(NumberClass); - if (val1 instanceof String && val2 instanceof String) { - return ((String)val1).compareTo((String)val2) <= 0; - } - d1 = toNumber(val1); - d2 = toNumber(val2); - } - return d1 <= d2; - } - - // ------------------ - // Statements - // ------------------ - - public static ScriptableObject getGlobal(Context cx) { - final String GLOBAL_CLASS = "org.mozilla.javascript.tools.shell.Global"; - Class globalClass = Kit.classOrNull(GLOBAL_CLASS); - if (globalClass != null) { - try { - Class[] parm = { ScriptRuntime.ContextClass }; - Constructor globalClassCtor = globalClass.getConstructor(parm); - Object[] arg = { cx }; - return (ScriptableObject) globalClassCtor.newInstance(arg); - } catch (Exception e) { - // fall through... - } - } - return new ImporterTopLevel(cx); - } - - public static boolean hasTopCall(Context cx) - { - return (cx.topCallScope != null); - } - - public static Scriptable getTopCallScope(Context cx) - { - Scriptable scope = cx.topCallScope; - if (scope == null) { - throw new IllegalStateException(); - } - return scope; - } - - public static Object doTopCall(Callable callable, - Context cx, Scriptable scope, - Scriptable thisObj, Object[] args) - { - if (scope == null) throw new IllegalArgumentException(); - if (cx.topCallScope != null) throw new IllegalStateException(); - - Object result; - cx.topCallScope = ScriptableObject.getTopLevelScope(scope); - cx.useDynamicScope = cx.hasFeature(Context.FEATURE_DYNAMIC_SCOPE); - ContextFactory f = cx.getFactory(); - try { - result = f.doTopCall(callable, cx, scope, thisObj, args); - } finally { - cx.topCallScope = null; - // Cleanup cached references - cx.cachedXMLLib = null; - - if (cx.currentActivationCall != null) { - // Function should always call exitActivationFunction - // if it creates activation record - throw new IllegalStateException(); - } - } - return result; - } - - /** - * Return <tt>possibleDynamicScope</tt> if <tt>staticTopScope</tt> - * is present on its prototype chain and return <tt>staticTopScope</tt> - * otherwise. - * Should only be called when <tt>staticTopScope</tt> is top scope. - */ - static Scriptable checkDynamicScope(Scriptable possibleDynamicScope, - Scriptable staticTopScope) - { - // Return cx.topCallScope if scope - if (possibleDynamicScope == staticTopScope) { - return possibleDynamicScope; - } - Scriptable proto = possibleDynamicScope; - for (;;) { - proto = proto.getPrototype(); - if (proto == staticTopScope) { - return possibleDynamicScope; - } - if (proto == null) { - return staticTopScope; - } - } - } - - public static void addInstructionCount(Context cx, int instructionsToAdd) - { - cx.instructionCount += instructionsToAdd; - if (cx.instructionCount > cx.instructionThreshold) - { - cx.observeInstructionCount(cx.instructionCount); - cx.instructionCount = 0; - } - } - - public static void initScript(NativeFunction funObj, Scriptable thisObj, - Context cx, Scriptable scope, - boolean evalScript) - { - if (cx.topCallScope == null) - throw new IllegalStateException(); - - int varCount = funObj.getParamAndVarCount(); - if (varCount != 0) { - - Scriptable varScope = scope; - // Never define any variables from var statements inside with - // object. See bug 38590. - while (varScope instanceof NativeWith) { - varScope = varScope.getParentScope(); - } - - for (int i = varCount; i-- != 0;) { - String name = funObj.getParamOrVarName(i); - boolean isConst = funObj.getParamOrVarConst(i); - // Don't overwrite existing def if already defined in object - // or prototypes of object. - if (!ScriptableObject.hasProperty(scope, name)) { - if (!evalScript) { - // Global var definitions are supposed to be DONTDELETE - if (isConst) - ScriptableObject.defineConstProperty(varScope, name); - else - ScriptableObject.defineProperty( - varScope, name, Undefined.instance, - ScriptableObject.PERMANENT); - } else { - varScope.put(name, varScope, Undefined.instance); - } - } else { - ScriptableObject.redefineProperty(scope, name, isConst); - } - } - } - } - - public static Scriptable createFunctionActivation(NativeFunction funObj, - Scriptable scope, - Object[] args) - { - return new NativeCall(funObj, scope, args); - } - - - public static void enterActivationFunction(Context cx, - Scriptable scope) - { - if (cx.topCallScope == null) - throw new IllegalStateException(); - NativeCall call = (NativeCall)scope; - call.parentActivationCall = cx.currentActivationCall; - cx.currentActivationCall = call; - } - - public static void exitActivationFunction(Context cx) - { - NativeCall call = cx.currentActivationCall; - cx.currentActivationCall = call.parentActivationCall; - call.parentActivationCall = null; - } - - static NativeCall findFunctionActivation(Context cx, Function f) - { - NativeCall call = cx.currentActivationCall; - while (call != null) { - if (call.function == f) - return call; - call = call.parentActivationCall; - } - return null; - } - - public static Scriptable newCatchScope(Throwable t, - Scriptable lastCatchScope, - String exceptionName, - Context cx, Scriptable scope) - { - Object obj; - boolean cacheObj; - - getObj: - if (t instanceof JavaScriptException) { - cacheObj = false; - obj = ((JavaScriptException)t).getValue(); - } else { - cacheObj = true; - - // Create wrapper object unless it was associated with - // the previous scope object - - if (lastCatchScope != null) { - NativeObject last = (NativeObject)lastCatchScope; - obj = last.getAssociatedValue(t); - if (obj == null) Kit.codeBug(); - break getObj; - } - - RhinoException re; - String errorName; - String errorMsg; - Throwable javaException = null; - - if (t instanceof EcmaError) { - EcmaError ee = (EcmaError)t; - re = ee; - errorName = ee.getName(); - errorMsg = ee.getErrorMessage(); - } else if (t instanceof WrappedException) { - WrappedException we = (WrappedException)t; - re = we; - javaException = we.getWrappedException(); - errorName = "JavaException"; - errorMsg = javaException.getClass().getName() - +": "+javaException.getMessage(); - } else if (t instanceof EvaluatorException) { - // Pure evaluator exception, nor WrappedException instance - EvaluatorException ee = (EvaluatorException)t; - re = ee; - errorName = "InternalError"; - errorMsg = ee.getMessage(); - } else if (cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)) { - // With FEATURE_ENHANCED_JAVA_ACCESS, scripts can catch - // all exception types - re = new WrappedException(t); - errorName = "JavaException"; - errorMsg = t.toString(); - } else { - // Script can catch only instances of JavaScriptException, - // EcmaError and EvaluatorException - throw Kit.codeBug(); - } - - String sourceUri = re.sourceName(); - if (sourceUri == null) { - sourceUri = ""; - } - int line = re.lineNumber(); - Object args[]; - if (line > 0) { - args = new Object[] { errorMsg, sourceUri, new Integer(line) }; - } else { - args = new Object[] { errorMsg, sourceUri }; - } - - Scriptable errorObject = cx.newObject(scope, errorName, args); - ScriptableObject.putProperty(errorObject, "name", errorName); - - if (javaException != null) { - Object wrap = cx.getWrapFactory().wrap(cx, scope, javaException, - null); - ScriptableObject.defineProperty( - errorObject, "javaException", wrap, - ScriptableObject.PERMANENT | ScriptableObject.READONLY); - } - Object wrap = cx.getWrapFactory().wrap(cx, scope, re, null); - ScriptableObject.defineProperty( - errorObject, "rhinoException", wrap, - ScriptableObject.PERMANENT | ScriptableObject.READONLY); - - obj = errorObject; - } - - NativeObject catchScopeObject = new NativeObject(); - // See ECMA 12.4 - catchScopeObject.defineProperty( - exceptionName, obj, ScriptableObject.PERMANENT); - - // Add special Rhino object __exception__ defined in the catch - // scope that can be used to retrieve the Java exception associated - // with the JavaScript exception (to get stack trace info, etc.) - /*APPJET NOJAVA*/ - /*catchScopeObject.defineProperty( - "__exception__", Context.javaToJS(t, scope), - ScriptableObject.PERMANENT|ScriptableObject.DONTENUM);*/ - - if (cacheObj) { - catchScopeObject.associateValue(t, obj); - } - return catchScopeObject; - } - - public static Scriptable enterWith(Object obj, Context cx, - Scriptable scope) - { - Scriptable sobj = toObjectOrNull(cx, obj); - if (sobj == null) { - throw typeError1("msg.undef.with", toString(obj)); - } - if (sobj instanceof XMLObject) { - XMLObject xmlObject = (XMLObject)sobj; - return xmlObject.enterWith(scope); - } - return new NativeWith(scope, sobj); - } - - public static Scriptable leaveWith(Scriptable scope) - { - NativeWith nw = (NativeWith)scope; - return nw.getParentScope(); - } - - public static Scriptable enterDotQuery(Object value, Scriptable scope) - { - if (!(value instanceof XMLObject)) { - throw notXmlError(value); - } - XMLObject object = (XMLObject)value; - return object.enterDotQuery(scope); - } - - public static Object updateDotQuery(boolean value, Scriptable scope) - { - // Return null to continue looping - NativeWith nw = (NativeWith)scope; - return nw.updateDotQuery(value); - } - - public static Scriptable leaveDotQuery(Scriptable scope) - { - NativeWith nw = (NativeWith)scope; - return nw.getParentScope(); - } - - public static void setFunctionProtoAndParent(BaseFunction fn, - Scriptable scope) - { - fn.setParentScope(scope); - fn.setPrototype(ScriptableObject.getFunctionPrototype(scope)); - } - - public static void setObjectProtoAndParent(ScriptableObject object, - Scriptable scope) - { - // Compared with function it always sets the scope to top scope - scope = ScriptableObject.getVeryTopLevelScope(scope); // APPJET - object.setParentScope(scope); - Scriptable proto - = ScriptableObject.getClassPrototype(scope, object.getClassName()); - object.setPrototype(proto); - } - - public static void initFunction(Context cx, Scriptable scope, - NativeFunction function, int type, - boolean fromEvalCode) - { - if (type == FunctionNode.FUNCTION_STATEMENT) { - String name = function.getFunctionName(); - if (name != null && name.length() != 0) { - if (!fromEvalCode) { - // ECMA specifies that functions defined in global and - // function scope outside eval should have DONTDELETE set. - ScriptableObject.defineProperty - (scope, name, function, ScriptableObject.PERMANENT); - } else { - scope.put(name, scope, function); - } - } - } else if (type == FunctionNode.FUNCTION_EXPRESSION_STATEMENT) { - String name = function.getFunctionName(); - if (name != null && name.length() != 0) { - // Always put function expression statements into initial - // activation object ignoring the with statement to follow - // SpiderMonkey - while (scope instanceof NativeWith) { - scope = scope.getParentScope(); - } - scope.put(name, scope, function); - } - } else { - throw Kit.codeBug(); - } - } - - public static Scriptable newArrayLiteral(Object[] objects, - int[] skipIndices, - Context cx, Scriptable scope) - { - final int SKIP_DENSITY = 2; - int count = objects.length; - int skipCount = 0; - if (skipIndices != null) { - skipCount = skipIndices.length; - } - int length = count + skipCount; - if (length > 1 && skipCount * SKIP_DENSITY < length) { - // If not too sparse, create whole array for constructor - Object[] sparse; - if (skipCount == 0) { - sparse = objects; - } else { - sparse = new Object[length]; - int skip = 0; - for (int i = 0, j = 0; i != length; ++i) { - if (skip != skipCount && skipIndices[skip] == i) { - sparse[i] = Scriptable.NOT_FOUND; - ++skip; - continue; - } - sparse[i] = objects[j]; - ++j; - } - } - return cx.newObject(scope, "Array", sparse); - } - - Scriptable arrayObj = cx.newObject(scope, "Array", - ScriptRuntime.emptyArgs); - int skip = 0; - for (int i = 0, j = 0; i != length; ++i) { - if (skip != skipCount && skipIndices[skip] == i) { - ++skip; - continue; - } - ScriptableObject.putProperty(arrayObj, i, objects[j]); - ++j; - } - return arrayObj; - } - - /** - * This method is here for backward compat with existing compiled code. It - * is called when an object literal is compiled. The next instance will be - * the version called from new code. - * @deprecated This method only present for compatibility. - */ - public static Scriptable newObjectLiteral(Object[] propertyIds, - Object[] propertyValues, - Context cx, Scriptable scope) - { - // This will initialize to all zeros, exactly what we need for old-style - // getterSetters values (no getters or setters in the list) - int [] getterSetters = new int[propertyIds.length]; - return newObjectLiteral(propertyIds, propertyValues, getterSetters, - cx, scope); - } - - public static Scriptable newObjectLiteral(Object[] propertyIds, - Object[] propertyValues, - int [] getterSetters, - Context cx, Scriptable scope) - { - Scriptable object = cx.newObject(scope); - for (int i = 0, end = propertyIds.length; i != end; ++i) { - Object id = propertyIds[i]; - int getterSetter = getterSetters[i]; - Object value = propertyValues[i]; - if (id instanceof String) { - if (getterSetter == 0) - ScriptableObject.putProperty(object, (String)id, value); - else { - Callable fun; - String definer; - if (getterSetter < 0) // < 0 means get foo() ... - definer = "__defineGetter__"; - else - definer = "__defineSetter__"; - fun = getPropFunctionAndThis(object, definer, cx); - // Must consume the last scriptable object in cx - lastStoredScriptable(cx); - Object[] outArgs = new Object[2]; - outArgs[0] = id; - outArgs[1] = value; - fun.call(cx, scope, object, outArgs); - } - } else { - int index = ((Integer)id).intValue(); - ScriptableObject.putProperty(object, index, value); - } - } - return object; - } - - public static boolean isArrayObject(Object obj) - { - return obj instanceof NativeArray || obj instanceof Arguments; - } - - public static Object[] getArrayElements(Scriptable object) - { - Context cx = Context.getContext(); - long longLen = NativeArray.getLengthProperty(cx, object); - if (longLen > Integer.MAX_VALUE) { - // arrays beyond MAX_INT is not in Java in any case - throw new IllegalArgumentException(); - } - int len = (int) longLen; - if (len == 0) { - return ScriptRuntime.emptyArgs; - } else { - Object[] result = new Object[len]; - for (int i=0; i < len; i++) { - Object elem = ScriptableObject.getProperty(object, i); - result[i] = (elem == Scriptable.NOT_FOUND) ? Undefined.instance - : elem; - } - return result; - } - } - - static void checkDeprecated(Context cx, String name) { - int version = cx.getLanguageVersion(); - if (version >= Context.VERSION_1_4 || version == Context.VERSION_DEFAULT) { - String msg = getMessage1("msg.deprec.ctor", name); - if (version == Context.VERSION_DEFAULT) - Context.reportWarning(msg); - else - throw Context.reportRuntimeError(msg); - } - } - - public static String getMessage0(String messageId) - { - return getMessage(messageId, null); - } - - public static String getMessage1(String messageId, Object arg1) - { - Object[] arguments = {arg1}; - return getMessage(messageId, arguments); - } - - public static String getMessage2( - String messageId, Object arg1, Object arg2) - { - Object[] arguments = {arg1, arg2}; - return getMessage(messageId, arguments); - } - - public static String getMessage3( - String messageId, Object arg1, Object arg2, Object arg3) - { - Object[] arguments = {arg1, arg2, arg3}; - return getMessage(messageId, arguments); - } - - public static String getMessage4( - String messageId, Object arg1, Object arg2, Object arg3, Object arg4) - { - Object[] arguments = {arg1, arg2, arg3, arg4}; - return getMessage(messageId, arguments); - } - - /* OPT there's a noticable delay for the first error! Maybe it'd - * make sense to use a ListResourceBundle instead of a properties - * file to avoid (synchronized) text parsing. - */ - public static String getMessage(String messageId, Object[] arguments) - { - final String defaultResource - = "org.mozilla.javascript.resources.Messages"; - - Context cx = Context.getCurrentContext(); - Locale locale = cx != null ? cx.getLocale() : Locale.getDefault(); - - // ResourceBundle does cacheing. - ResourceBundle rb = ResourceBundle.getBundle(defaultResource, locale); - - String formatString; - try { - formatString = rb.getString(messageId); - } catch (java.util.MissingResourceException mre) { - throw new RuntimeException - ("no message resource found for message property "+ messageId); - } - - /* - * It's OK to format the string, even if 'arguments' is null; - * we need to format it anyway, to make double ''s collapse to - * single 's. - */ - MessageFormat formatter = new MessageFormat(formatString); - return formatter.format(arguments); - } - - public static EcmaError constructError(String error, String message) - { - int[] linep = new int[1]; - String filename = Context.getSourcePositionFromStack(linep); - return constructError(error, message, filename, linep[0], null, 0); - } - - public static EcmaError constructError(String error, - String message, - int lineNumberDelta) - { - int[] linep = new int[1]; - String filename = Context.getSourcePositionFromStack(linep); - if (linep[0] != 0) { - linep[0] += lineNumberDelta; - } - return constructError(error, message, filename, linep[0], null, 0); - } - - public static EcmaError constructError(String error, - String message, - String sourceName, - int lineNumber, - String lineSource, - int columnNumber) - { - return new EcmaError(error, message, sourceName, - lineNumber, lineSource, columnNumber); - } - - public static EcmaError typeError(String message) - { - return constructError("TypeError", message); - } - - public static EcmaError typeError0(String messageId) - { - String msg = getMessage0(messageId); - return typeError(msg); - } - - public static EcmaError typeError1(String messageId, String arg1) - { - String msg = getMessage1(messageId, arg1); - return typeError(msg); - } - - public static EcmaError typeError2(String messageId, String arg1, - String arg2) - { - String msg = getMessage2(messageId, arg1, arg2); - return typeError(msg); - } - - public static EcmaError typeError3(String messageId, String arg1, - String arg2, String arg3) - { - String msg = getMessage3(messageId, arg1, arg2, arg3); - return typeError(msg); - } - - public static RuntimeException undefReadError(Object object, Object id) - { - String idStr = (id == null) ? "null" : id.toString(); - return typeError2("msg.undef.prop.read", toString(object), idStr); - } - - public static RuntimeException undefCallError(Object object, Object id) - { - String idStr = (id == null) ? "null" : id.toString(); - return typeError2("msg.undef.method.call", toString(object), idStr); - } - - public static RuntimeException undefWriteError(Object object, - Object id, - Object value) - { - String idStr = (id == null) ? "null" : id.toString(); - String valueStr = (value instanceof Scriptable) - ? value.toString() : toString(value); - return typeError3("msg.undef.prop.write", toString(object), idStr, - valueStr); - } - - public static RuntimeException notFoundError(Scriptable object, - String property) - { - // XXX: use object to improve the error message - String msg = getMessage1("msg.is.not.defined", property); - throw constructError("ReferenceError", msg); - } - - public static RuntimeException notFunctionError(Object value) - { - return notFunctionError(value, value); - } - - public static RuntimeException notFunctionError(Object value, - Object messageHelper) - { - // Use value for better error reporting - String msg = (messageHelper == null) - ? "null" : messageHelper.toString(); - if (value == Scriptable.NOT_FOUND) { - return typeError1("msg.function.not.found", msg); - } - return typeError2("msg.isnt.function", msg, typeof(value)); - } - - public static RuntimeException notFunctionError(Object obj, Object value, - String propertyName) - { - // Use obj and value for better error reporting - String objString = toString(obj); - if (value == Scriptable.NOT_FOUND) { - return typeError2("msg.function.not.found.in", propertyName, - objString); - } - return typeError3("msg.isnt.function.in", propertyName, objString, - typeof(value)); - } - - private static RuntimeException notXmlError(Object value) - { - throw typeError1("msg.isnt.xml.object", toString(value)); - } - - private static void warnAboutNonJSObject(Object nonJSObject) - { - String message = -"RHINO USAGE WARNING: Missed Context.javaToJS() conversion:\n" -+"Rhino runtime detected object "+nonJSObject+" of class "+nonJSObject.getClass().getName()+" where it expected String, Number, Boolean or Scriptable instance. Please check your code for missing Context.javaToJS() call."; - Context.reportWarning(message); - // Just to be sure that it would be noticed - System.err.println(message); - } - - public static RegExpProxy getRegExpProxy(Context cx) - { - return cx.getRegExpProxy(); - } - - public static void setRegExpProxy(Context cx, RegExpProxy proxy) - { - if (proxy == null) throw new IllegalArgumentException(); - cx.regExpProxy = proxy; - } - - public static RegExpProxy checkRegExpProxy(Context cx) - { - RegExpProxy result = getRegExpProxy(cx); - if (result == null) { - throw Context.reportRuntimeError0("msg.no.regexp"); - } - return result; - } - - private static XMLLib currentXMLLib(Context cx) - { - // Scripts should be running to access this - if (cx.topCallScope == null) - throw new IllegalStateException(); - - XMLLib xmlLib = cx.cachedXMLLib; - if (xmlLib == null) { - xmlLib = XMLLib.extractFromScope(cx.topCallScope); - if (xmlLib == null) - throw new IllegalStateException(); - cx.cachedXMLLib = xmlLib; - } - - return xmlLib; - } - - /** - * Escapes the reserved characters in a value of an attribute - * - * @param value Unescaped text - * @return The escaped text - */ - public static String escapeAttributeValue(Object value, Context cx) - { - XMLLib xmlLib = currentXMLLib(cx); - return xmlLib.escapeAttributeValue(value); - } - - /** - * Escapes the reserved characters in a value of a text node - * - * @param value Unescaped text - * @return The escaped text - */ - public static String escapeTextValue(Object value, Context cx) - { - XMLLib xmlLib = currentXMLLib(cx); - return xmlLib.escapeTextValue(value); - } - - public static Ref memberRef(Object obj, Object elem, - Context cx, int memberTypeFlags) - { - if (!(obj instanceof XMLObject)) { - throw notXmlError(obj); - } - XMLObject xmlObject = (XMLObject)obj; - return xmlObject.memberRef(cx, elem, memberTypeFlags); - } - - public static Ref memberRef(Object obj, Object namespace, Object elem, - Context cx, int memberTypeFlags) - { - if (!(obj instanceof XMLObject)) { - throw notXmlError(obj); - } - XMLObject xmlObject = (XMLObject)obj; - return xmlObject.memberRef(cx, namespace, elem, memberTypeFlags); - } - - public static Ref nameRef(Object name, Context cx, - Scriptable scope, int memberTypeFlags) - { - XMLLib xmlLib = currentXMLLib(cx); - return xmlLib.nameRef(cx, name, scope, memberTypeFlags); - } - - public static Ref nameRef(Object namespace, Object name, Context cx, - Scriptable scope, int memberTypeFlags) - { - XMLLib xmlLib = currentXMLLib(cx); - return xmlLib.nameRef(cx, namespace, name, scope, memberTypeFlags); - } - - private static void storeIndexResult(Context cx, int index) - { - cx.scratchIndex = index; - } - - static int lastIndexResult(Context cx) - { - return cx.scratchIndex; - } - - public static void storeUint32Result(Context cx, long value) - { - if ((value >>> 32) != 0) - throw new IllegalArgumentException(); - cx.scratchUint32 = value; - } - - public static long lastUint32Result(Context cx) - { - long value = cx.scratchUint32; - if ((value >>> 32) != 0) - throw new IllegalStateException(); - return value; - } - - private static void storeScriptable(Context cx, Scriptable value) - { - // The previosly stored scratchScriptable should be consumed - if (cx.scratchScriptable != null) - throw new IllegalStateException(); - cx.scratchScriptable = value; - } - - public static Scriptable lastStoredScriptable(Context cx) - { - Scriptable result = cx.scratchScriptable; - cx.scratchScriptable = null; - return result; - } - - static String makeUrlForGeneratedScript - (boolean isEval, String masterScriptUrl, int masterScriptLine) - { - if (isEval) { - return masterScriptUrl+'#'+masterScriptLine+"(eval)"; - } else { - return masterScriptUrl+'#'+masterScriptLine+"(Function)"; - } - } - - static boolean isGeneratedScript(String sourceUrl) { - // ALERT: this may clash with a valid URL containing (eval) or - // (Function) - return sourceUrl.indexOf("(eval)") >= 0 - || sourceUrl.indexOf("(Function)") >= 0; - } - - private static RuntimeException errorWithClassName(String msg, Object val) - { - return Context.reportRuntimeError1(msg, val.getClass().getName()); - } - - public static final Object[] emptyArgs = new Object[0]; - public static final String[] emptyStrings = new String[0]; - -} |