From 89bda83e0570ab87c6e449f5955613d5385e90b3 Mon Sep 17 00:00:00 2001 From: "alexanders@b2ef00c0-3703-41da-baef-cfe82387ac0c" Date: Wed, 3 Feb 2010 00:50:41 +0000 Subject: removed obsolete svn folder from hg tree --HG-- extra : convert_revision : svn%3Ab2ef00c0-3703-41da-baef-cfe82387ac0c/trunk%408 --- .../src/org/mozilla/javascript/NativeGlobal.java | 790 +++++++++++++++++++++ 1 file changed, 790 insertions(+) create mode 100644 infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java (limited to 'infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java') diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java new file mode 100644 index 0000000..58faad4 --- /dev/null +++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java @@ -0,0 +1,790 @@ +/* -*- 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) 1997-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Norris Boyd + * Igor Bukanov + * Mike McCabe + * + * 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 org.mozilla.javascript.xml.XMLLib; + +/** + * This class implements the global native object (function and value + * properties only). + * + * See ECMA 15.1.[12]. + * + * @author Mike Shaver + */ + +public class NativeGlobal implements Serializable, IdFunctionCall +{ + static final long serialVersionUID = 6080442165748707530L; + + public static void init(Context cx, Scriptable scope, boolean sealed) { + NativeGlobal obj = new NativeGlobal(); + + for (int id = 1; id <= LAST_SCOPE_FUNCTION_ID; ++id) { + String name; + int arity = 1; + switch (id) { + case Id_decodeURI: + name = "decodeURI"; + break; + case Id_decodeURIComponent: + name = "decodeURIComponent"; + break; + case Id_encodeURI: + name = "encodeURI"; + break; + case Id_encodeURIComponent: + name = "encodeURIComponent"; + break; + case Id_escape: + name = "escape"; + break; + case Id_eval: + name = "eval"; + break; + case Id_isFinite: + name = "isFinite"; + break; + case Id_isNaN: + name = "isNaN"; + break; + case Id_isXMLName: + name = "isXMLName"; + break; + case Id_parseFloat: + name = "parseFloat"; + break; + case Id_parseInt: + name = "parseInt"; + arity = 2; + break; + case Id_unescape: + name = "unescape"; + break; + case Id_uneval: + name = "uneval"; + break; + default: + throw Kit.codeBug(); + } + IdFunctionObject f = new IdFunctionObject(obj, FTAG, id, name, + arity, scope); + if (sealed) { + f.sealObject(); + } + f.exportAsScopeProperty(); + } + + ScriptableObject.defineProperty( + scope, "NaN", ScriptRuntime.NaNobj, + ScriptableObject.DONTENUM); + ScriptableObject.defineProperty( + scope, "Infinity", + ScriptRuntime.wrapNumber(Double.POSITIVE_INFINITY), + ScriptableObject.DONTENUM); + ScriptableObject.defineProperty( + scope, "undefined", Undefined.instance, + ScriptableObject.DONTENUM); + + String[] errorMethods = Kit.semicolonSplit("" + +"ConversionError;" + +"EvalError;" + +"RangeError;" + +"ReferenceError;" + +"SyntaxError;" + +"TypeError;" + +"URIError;" + +"InternalError;" + +"JavaException;" + ); + + /* + Each error constructor gets its own Error object as a prototype, + with the 'name' property set to the name of the error. + */ + for (int i = 0; i < errorMethods.length; i++) { + String name = errorMethods[i]; + Scriptable errorProto = ScriptRuntime. + newObject(cx, scope, "Error", + ScriptRuntime.emptyArgs); + errorProto.put("name", errorProto, name); + if (sealed) { + if (errorProto instanceof ScriptableObject) { + ((ScriptableObject)errorProto).sealObject(); + } + } + IdFunctionObject ctor = new IdFunctionObject(obj, FTAG, + Id_new_CommonError, + name, 1, scope); + ctor.markAsConstructor(errorProto); + if (sealed) { + ctor.sealObject(); + } + ctor.exportAsScopeProperty(); + } + } + + public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope, + Scriptable thisObj, Object[] args) + { + if (f.hasTag(FTAG)) { + int methodId = f.methodId(); + switch (methodId) { + case Id_decodeURI: + case Id_decodeURIComponent: { + String str = ScriptRuntime.toString(args, 0); + return decode(str, methodId == Id_decodeURI); + } + + case Id_encodeURI: + case Id_encodeURIComponent: { + String str = ScriptRuntime.toString(args, 0); + return encode(str, methodId == Id_encodeURI); + } + + case Id_escape: + return js_escape(args); + + case Id_eval: + return js_eval(cx, scope, args); + + case Id_isFinite: { + boolean result; + if (args.length < 1) { + result = false; + } else { + double d = ScriptRuntime.toNumber(args[0]); + result = (d == d + && d != Double.POSITIVE_INFINITY + && d != Double.NEGATIVE_INFINITY); + } + return ScriptRuntime.wrapBoolean(result); + } + + case Id_isNaN: { + // The global method isNaN, as per ECMA-262 15.1.2.6. + boolean result; + if (args.length < 1) { + result = true; + } else { + double d = ScriptRuntime.toNumber(args[0]); + result = (d != d); + } + return ScriptRuntime.wrapBoolean(result); + } + + case Id_isXMLName: { + Object name = (args.length == 0) + ? Undefined.instance : args[0]; + XMLLib xmlLib = XMLLib.extractFromScope(scope); + return ScriptRuntime.wrapBoolean( + xmlLib.isXMLName(cx, name)); + } + + case Id_parseFloat: + return js_parseFloat(args); + + case Id_parseInt: + return js_parseInt(args); + + case Id_unescape: + return js_unescape(args); + + case Id_uneval: { + Object value = (args.length != 0) + ? args[0] : Undefined.instance; + return ScriptRuntime.uneval(cx, scope, value); + } + + case Id_new_CommonError: + // The implementation of all the ECMA error constructors + // (SyntaxError, TypeError, etc.) + return NativeError.make(cx, scope, f, args); + } + } + throw f.unknown(); + } + + /** + * The global method parseInt, as per ECMA-262 15.1.2.2. + */ + private Object js_parseInt(Object[] args) { + String s = ScriptRuntime.toString(args, 0); + int radix = ScriptRuntime.toInt32(args, 1); + + int len = s.length(); + if (len == 0) + return ScriptRuntime.NaNobj; + + boolean negative = false; + int start = 0; + char c; + do { + c = s.charAt(start); + if (!Character.isWhitespace(c)) + break; + start++; + } while (start < len); + + if (c == '+' || (negative = (c == '-'))) + start++; + + final int NO_RADIX = -1; + if (radix == 0) { + radix = NO_RADIX; + } else if (radix < 2 || radix > 36) { + return ScriptRuntime.NaNobj; + } else if (radix == 16 && len - start > 1 && s.charAt(start) == '0') { + c = s.charAt(start+1); + if (c == 'x' || c == 'X') + start += 2; + } + + if (radix == NO_RADIX) { + radix = 10; + if (len - start > 1 && s.charAt(start) == '0') { + c = s.charAt(start+1); + if (c == 'x' || c == 'X') { + radix = 16; + start += 2; + } else if ('0' <= c && c <= '9') { + radix = 8; + start++; + } + } + } + + double d = ScriptRuntime.stringToNumber(s, start, radix); + return ScriptRuntime.wrapNumber(negative ? -d : d); + } + + /** + * The global method parseFloat, as per ECMA-262 15.1.2.3. + * + * @param args the arguments to parseFloat, ignoring args[>=1] + */ + private Object js_parseFloat(Object[] args) + { + if (args.length < 1) + return ScriptRuntime.NaNobj; + + String s = ScriptRuntime.toString(args[0]); + int len = s.length(); + int start = 0; + // Scan forward to skip whitespace + char c; + for (;;) { + if (start == len) { + return ScriptRuntime.NaNobj; + } + c = s.charAt(start); + if (!TokenStream.isJSSpace(c)) { + break; + } + ++start; + } + + int i = start; + if (c == '+' || c == '-') { + ++i; + if (i == len) { + return ScriptRuntime.NaNobj; + } + c = s.charAt(i); + } + + if (c == 'I') { + // check for "Infinity" + if (i+8 <= len && s.regionMatches(i, "Infinity", 0, 8)) { + double d; + if (s.charAt(start) == '-') { + d = Double.NEGATIVE_INFINITY; + } else { + d = Double.POSITIVE_INFINITY; + } + return ScriptRuntime.wrapNumber(d); + } + return ScriptRuntime.NaNobj; + } + + // Find the end of the legal bit + int decimal = -1; + int exponent = -1; + for (; i < len; i++) { + switch (s.charAt(i)) { + case '.': + if (decimal != -1) // Only allow a single decimal point. + break; + decimal = i; + continue; + + case 'e': + case 'E': + if (exponent != -1) + break; + exponent = i; + continue; + + case '+': + case '-': + // Only allow '+' or '-' after 'e' or 'E' + if (exponent != i-1) + break; + continue; + + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + continue; + + default: + break; + } + break; + } + s = s.substring(start, i); + try { + return Double.valueOf(s); + } + catch (NumberFormatException ex) { + return ScriptRuntime.NaNobj; + } + } + + /** + * The global method escape, as per ECMA-262 15.1.2.4. + + * Includes code for the 'mask' argument supported by the C escape + * method, which used to be part of the browser imbedding. Blame + * for the strange constant names should be directed there. + */ + + private Object js_escape(Object[] args) { + final int + URL_XALPHAS = 1, + URL_XPALPHAS = 2, + URL_PATH = 4; + + String s = ScriptRuntime.toString(args, 0); + + int mask = URL_XALPHAS | URL_XPALPHAS | URL_PATH; + if (args.length > 1) { // the 'mask' argument. Non-ECMA. + double d = ScriptRuntime.toNumber(args[1]); + if (d != d || ((mask = (int) d) != d) || + 0 != (mask & ~(URL_XALPHAS | URL_XPALPHAS | URL_PATH))) + { + throw Context.reportRuntimeError0("msg.bad.esc.mask"); + } + } + + StringBuffer sb = null; + for (int k = 0, L = s.length(); k != L; ++k) { + int c = s.charAt(k); + if (mask != 0 + && ((c >= '0' && c <= '9') + || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') + || c == '@' || c == '*' || c == '_' || c == '-' || c == '.' + || (0 != (mask & URL_PATH) && (c == '/' || c == '+')))) + { + if (sb != null) { + sb.append((char)c); + } + } else { + if (sb == null) { + sb = new StringBuffer(L + 3); + sb.append(s); + sb.setLength(k); + } + + int hexSize; + if (c < 256) { + if (c == ' ' && mask == URL_XPALPHAS) { + sb.append('+'); + continue; + } + sb.append('%'); + hexSize = 2; + } else { + sb.append('%'); + 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(); + } + + /** + * The global unescape method, as per ECMA-262 15.1.2.5. + */ + + private Object js_unescape(Object[] args) + { + String s = ScriptRuntime.toString(args, 0); + int firstEscapePos = s.indexOf('%'); + if (firstEscapePos >= 0) { + int L = s.length(); + char[] buf = s.toCharArray(); + int destination = firstEscapePos; + for (int k = firstEscapePos; k != L;) { + char c = buf[k]; + ++k; + if (c == '%' && k != L) { + int end, start; + if (buf[k] == 'u') { + start = k + 1; + end = k + 5; + } else { + start = k; + end = k + 2; + } + if (end <= L) { + int x = 0; + for (int i = start; i != end; ++i) { + x = Kit.xDigitToInt(buf[i], x); + } + if (x >= 0) { + c = (char)x; + k = end; + } + } + } + buf[destination] = c; + ++destination; + } + s = new String(buf, 0, destination); + } + return s; + } + + private Object js_eval(Context cx, Scriptable scope, Object[] args) + { + String m = ScriptRuntime.getMessage1("msg.cant.call.indirect", "eval"); + throw NativeGlobal.constructError(cx, "EvalError", m, scope); + } + + static boolean isEvalFunction(Object functionObj) + { + if (functionObj instanceof IdFunctionObject) { + IdFunctionObject function = (IdFunctionObject)functionObj; + if (function.hasTag(FTAG) && function.methodId() == Id_eval) { + return true; + } + } + return false; + } + + /** + * @deprecated Use {@link ScriptRuntime#constructError(String,String)} + * instead. + */ + public static EcmaError constructError(Context cx, + String error, + String message, + Scriptable scope) + { + return ScriptRuntime.constructError(error, message); + } + + /** + * @deprecated Use + * {@link ScriptRuntime#constructError(String,String,String,int,String,int)} + * instead. + */ + public static EcmaError constructError(Context cx, + String error, + String message, + Scriptable scope, + String sourceName, + int lineNumber, + int columnNumber, + String lineSource) + { + return ScriptRuntime.constructError(error, message, + sourceName, lineNumber, + lineSource, columnNumber); + } + + /* + * ECMA 3, 15.1.3 URI Handling Function Properties + * + * The following are implementations of the algorithms + * given in the ECMA specification for the hidden functions + * 'Encode' and 'Decode'. + */ + private static String encode(String str, boolean fullUri) { + byte[] utf8buf = null; + StringBuffer sb = null; + + for (int k = 0, length = str.length(); k != length; ++k) { + char C = str.charAt(k); + if (encodeUnescaped(C, fullUri)) { + if (sb != null) { + sb.append(C); + } + } else { + if (sb == null) { + sb = new StringBuffer(length + 3); + sb.append(str); + sb.setLength(k); + utf8buf = new byte[6]; + } + if (0xDC00 <= C && C <= 0xDFFF) { + throw Context.reportRuntimeError0("msg.bad.uri"); + } + int V; + if (C < 0xD800 || 0xDBFF < C) { + V = C; + } else { + k++; + if (k == length) { + throw Context.reportRuntimeError0("msg.bad.uri"); + } + char C2 = str.charAt(k); + if (!(0xDC00 <= C2 && C2 <= 0xDFFF)) { + throw Context.reportRuntimeError0("msg.bad.uri"); + } + V = ((C - 0xD800) << 10) + (C2 - 0xDC00) + 0x10000; + } + int L = oneUcs4ToUtf8Char(utf8buf, V); + for (int j = 0; j < L; j++) { + int d = 0xff & utf8buf[j]; + sb.append('%'); + sb.append(toHexChar(d >>> 4)); + sb.append(toHexChar(d & 0xf)); + } + } + } + return (sb == null) ? str : sb.toString(); + } + + private static char toHexChar(int i) { + if (i >> 4 != 0) Kit.codeBug(); + return (char)((i < 10) ? i + '0' : i - 10 + 'a'); + } + + private static int unHex(char c) { + if ('A' <= c && c <= 'F') { + return c - 'A' + 10; + } else if ('a' <= c && c <= 'f') { + return c - 'a' + 10; + } else if ('0' <= c && c <= '9') { + return c - '0'; + } else { + return -1; + } + } + + private static int unHex(char c1, char c2) { + int i1 = unHex(c1); + int i2 = unHex(c2); + if (i1 >= 0 && i2 >= 0) { + return (i1 << 4) | i2; + } + return -1; + } + + private static String decode(String str, boolean fullUri) { + char[] buf = null; + int bufTop = 0; + + for (int k = 0, length = str.length(); k != length;) { + char C = str.charAt(k); + if (C != '%') { + if (buf != null) { + buf[bufTop++] = C; + } + ++k; + } else { + if (buf == null) { + // decode always compress so result can not be bigger then + // str.length() + buf = new char[length]; + str.getChars(0, k, buf, 0); + bufTop = k; + } + int start = k; + if (k + 3 > length) + throw Context.reportRuntimeError0("msg.bad.uri"); + int B = unHex(str.charAt(k + 1), str.charAt(k + 2)); + if (B < 0) throw Context.reportRuntimeError0("msg.bad.uri"); + k += 3; + if ((B & 0x80) == 0) { + C = (char)B; + } else { + // Decode UTF-8 sequence into ucs4Char and encode it into + // UTF-16 + int utf8Tail, ucs4Char, minUcs4Char; + if ((B & 0xC0) == 0x80) { + // First UTF-8 should be ouside 0x80..0xBF + throw Context.reportRuntimeError0("msg.bad.uri"); + } else if ((B & 0x20) == 0) { + utf8Tail = 1; ucs4Char = B & 0x1F; + minUcs4Char = 0x80; + } else if ((B & 0x10) == 0) { + utf8Tail = 2; ucs4Char = B & 0x0F; + minUcs4Char = 0x800; + } else if ((B & 0x08) == 0) { + utf8Tail = 3; ucs4Char = B & 0x07; + minUcs4Char = 0x10000; + } else if ((B & 0x04) == 0) { + utf8Tail = 4; ucs4Char = B & 0x03; + minUcs4Char = 0x200000; + } else if ((B & 0x02) == 0) { + utf8Tail = 5; ucs4Char = B & 0x01; + minUcs4Char = 0x4000000; + } else { + // First UTF-8 can not be 0xFF or 0xFE + throw Context.reportRuntimeError0("msg.bad.uri"); + } + if (k + 3 * utf8Tail > length) + throw Context.reportRuntimeError0("msg.bad.uri"); + for (int j = 0; j != utf8Tail; j++) { + if (str.charAt(k) != '%') + throw Context.reportRuntimeError0("msg.bad.uri"); + B = unHex(str.charAt(k + 1), str.charAt(k + 2)); + if (B < 0 || (B & 0xC0) != 0x80) + throw Context.reportRuntimeError0("msg.bad.uri"); + ucs4Char = (ucs4Char << 6) | (B & 0x3F); + k += 3; + } + // Check for overlongs and other should-not-present codes + if (ucs4Char < minUcs4Char + || ucs4Char == 0xFFFE || ucs4Char == 0xFFFF) + { + ucs4Char = 0xFFFD; + } + if (ucs4Char >= 0x10000) { + ucs4Char -= 0x10000; + if (ucs4Char > 0xFFFFF) + throw Context.reportRuntimeError0("msg.bad.uri"); + char H = (char)((ucs4Char >>> 10) + 0xD800); + C = (char)((ucs4Char & 0x3FF) + 0xDC00); + buf[bufTop++] = H; + } else { + C = (char)ucs4Char; + } + } + if (fullUri && URI_DECODE_RESERVED.indexOf(C) >= 0) { + for (int x = start; x != k; x++) { + buf[bufTop++] = str.charAt(x); + } + } else { + buf[bufTop++] = C; + } + } + } + return (buf == null) ? str : new String(buf, 0, bufTop); + } + + private static boolean encodeUnescaped(char c, boolean fullUri) { + if (('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z') + || ('0' <= c && c <= '9')) + { + return true; + } + if ("-_.!~*'()".indexOf(c) >= 0) + return true; + if (fullUri) { + return URI_DECODE_RESERVED.indexOf(c) >= 0; + } + return false; + } + + private static final String URI_DECODE_RESERVED = ";/?:@&=+$,#"; + + /* Convert one UCS-4 char and write it into a UTF-8 buffer, which must be + * at least 6 bytes long. Return the number of UTF-8 bytes of data written. + */ + private static int oneUcs4ToUtf8Char(byte[] utf8Buffer, int ucs4Char) { + int utf8Length = 1; + + //JS_ASSERT(ucs4Char <= 0x7FFFFFFF); + if ((ucs4Char & ~0x7F) == 0) + utf8Buffer[0] = (byte)ucs4Char; + else { + int i; + int a = ucs4Char >>> 11; + utf8Length = 2; + while (a != 0) { + a >>>= 5; + utf8Length++; + } + i = utf8Length; + while (--i > 0) { + utf8Buffer[i] = (byte)((ucs4Char & 0x3F) | 0x80); + ucs4Char >>>= 6; + } + utf8Buffer[0] = (byte)(0x100 - (1 << (8-utf8Length)) + ucs4Char); + } + return utf8Length; + } + + private static final Object FTAG = new Object(); + + private static final int + Id_decodeURI = 1, + Id_decodeURIComponent = 2, + Id_encodeURI = 3, + Id_encodeURIComponent = 4, + Id_escape = 5, + Id_eval = 6, + Id_isFinite = 7, + Id_isNaN = 8, + Id_isXMLName = 9, + Id_parseFloat = 10, + Id_parseInt = 11, + Id_unescape = 12, + Id_uneval = 13, + + LAST_SCOPE_FUNCTION_ID = 13, + + Id_new_CommonError = 14; +} -- cgit v1.2.3