--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/RegExpConstructor.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,360 @@
+/*
+ * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ * Copyright (C) 2003, 2007, 2008 Apple Inc. All Rights Reserved.
+ * Copyright (C) 2009 Torch Mobile, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include "config.h"
+#include "RegExpConstructor.h"
+
+#include "ArrayPrototype.h"
+#include "Error.h"
+#include "ExceptionHelpers.h"
+#include "JSArray.h"
+#include "JSFunction.h"
+#include "JSString.h"
+#include "Lookup.h"
+#include "ObjectPrototype.h"
+#include "RegExpMatchesArray.h"
+#include "RegExpObject.h"
+#include "RegExpPrototype.h"
+#include "RegExp.h"
+#include "RegExpCache.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace JSC {
+
+static JSValue regExpConstructorInput(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorMultiline(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorLastMatch(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorLastParen(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorLeftContext(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorRightContext(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar1(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar2(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar3(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar4(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar5(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar6(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar7(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar8(ExecState*, JSValue, const Identifier&);
+static JSValue regExpConstructorDollar9(ExecState*, JSValue, const Identifier&);
+
+static void setRegExpConstructorInput(ExecState*, JSObject*, JSValue);
+static void setRegExpConstructorMultiline(ExecState*, JSObject*, JSValue);
+
+} // namespace JSC
+
+#include "RegExpConstructor.lut.h"
+
+namespace JSC {
+
+ASSERT_CLASS_FITS_IN_CELL(RegExpConstructor);
+
+const ClassInfo RegExpConstructor::info = { "Function", &InternalFunction::info, 0, ExecState::regExpConstructorTable };
+
+/* Source for RegExpConstructor.lut.h
+@begin regExpConstructorTable
+ input regExpConstructorInput None
+ $_ regExpConstructorInput DontEnum
+ multiline regExpConstructorMultiline None
+ $* regExpConstructorMultiline DontEnum
+ lastMatch regExpConstructorLastMatch DontDelete|ReadOnly
+ $& regExpConstructorLastMatch DontDelete|ReadOnly|DontEnum
+ lastParen regExpConstructorLastParen DontDelete|ReadOnly
+ $+ regExpConstructorLastParen DontDelete|ReadOnly|DontEnum
+ leftContext regExpConstructorLeftContext DontDelete|ReadOnly
+ $` regExpConstructorLeftContext DontDelete|ReadOnly|DontEnum
+ rightContext regExpConstructorRightContext DontDelete|ReadOnly
+ $' regExpConstructorRightContext DontDelete|ReadOnly|DontEnum
+ $1 regExpConstructorDollar1 DontDelete|ReadOnly
+ $2 regExpConstructorDollar2 DontDelete|ReadOnly
+ $3 regExpConstructorDollar3 DontDelete|ReadOnly
+ $4 regExpConstructorDollar4 DontDelete|ReadOnly
+ $5 regExpConstructorDollar5 DontDelete|ReadOnly
+ $6 regExpConstructorDollar6 DontDelete|ReadOnly
+ $7 regExpConstructorDollar7 DontDelete|ReadOnly
+ $8 regExpConstructorDollar8 DontDelete|ReadOnly
+ $9 regExpConstructorDollar9 DontDelete|ReadOnly
+@end
+*/
+
+RegExpConstructor::RegExpConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, RegExpPrototype* regExpPrototype)
+ : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, "RegExp"))
+ , d(adoptPtr(new RegExpConstructorPrivate))
+{
+ // ECMA 15.10.5.1 RegExp.prototype
+ putDirectWithoutTransition(exec->propertyNames().prototype, regExpPrototype, DontEnum | DontDelete | ReadOnly);
+
+ // no. of arguments for constructor
+ putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 2), ReadOnly | DontDelete | DontEnum);
+}
+
+RegExpMatchesArray::RegExpMatchesArray(ExecState* exec, RegExpConstructorPrivate* data)
+ : JSArray(exec->lexicalGlobalObject()->regExpMatchesArrayStructure(), data->lastNumSubPatterns + 1, CreateInitialized)
+{
+ RegExpConstructorPrivate* d = new RegExpConstructorPrivate;
+ d->input = data->lastInput;
+ d->lastInput = data->lastInput;
+ d->lastNumSubPatterns = data->lastNumSubPatterns;
+ unsigned offsetVectorSize = (data->lastNumSubPatterns + 1) * 2; // only copying the result part of the vector
+ d->lastOvector().resize(offsetVectorSize);
+ memcpy(d->lastOvector().data(), data->lastOvector().data(), offsetVectorSize * sizeof(int));
+ // d->multiline is not needed, and remains uninitialized
+
+ setSubclassData(d);
+}
+
+RegExpMatchesArray::~RegExpMatchesArray()
+{
+ delete static_cast<RegExpConstructorPrivate*>(subclassData());
+}
+
+void RegExpMatchesArray::fillArrayInstance(ExecState* exec)
+{
+ RegExpConstructorPrivate* d = static_cast<RegExpConstructorPrivate*>(subclassData());
+ ASSERT(d);
+
+ unsigned lastNumSubpatterns = d->lastNumSubPatterns;
+
+ for (unsigned i = 0; i <= lastNumSubpatterns; ++i) {
+ int start = d->lastOvector()[2 * i];
+ if (start >= 0)
+ JSArray::put(exec, i, jsSubstring(exec, d->lastInput, start, d->lastOvector()[2 * i + 1] - start));
+ else
+ JSArray::put(exec, i, jsUndefined());
+ }
+
+ PutPropertySlot slot;
+ JSArray::put(exec, exec->propertyNames().index, jsNumber(exec, d->lastOvector()[0]), slot);
+ JSArray::put(exec, exec->propertyNames().input, jsString(exec, d->input), slot);
+
+ delete d;
+ setSubclassData(0);
+}
+
+JSObject* RegExpConstructor::arrayOfMatches(ExecState* exec) const
+{
+ return new (exec) RegExpMatchesArray(exec, d.get());
+}
+
+JSValue RegExpConstructor::getBackref(ExecState* exec, unsigned i) const
+{
+ if (!d->lastOvector().isEmpty() && i <= d->lastNumSubPatterns) {
+ int start = d->lastOvector()[2 * i];
+ if (start >= 0)
+ return jsSubstring(exec, d->lastInput, start, d->lastOvector()[2 * i + 1] - start);
+ }
+ return jsEmptyString(exec);
+}
+
+JSValue RegExpConstructor::getLastParen(ExecState* exec) const
+{
+ unsigned i = d->lastNumSubPatterns;
+ if (i > 0) {
+ ASSERT(!d->lastOvector().isEmpty());
+ int start = d->lastOvector()[2 * i];
+ if (start >= 0)
+ return jsSubstring(exec, d->lastInput, start, d->lastOvector()[2 * i + 1] - start);
+ }
+ return jsEmptyString(exec);
+}
+
+JSValue RegExpConstructor::getLeftContext(ExecState* exec) const
+{
+ if (!d->lastOvector().isEmpty())
+ return jsSubstring(exec, d->lastInput, 0, d->lastOvector()[0]);
+ return jsEmptyString(exec);
+}
+
+JSValue RegExpConstructor::getRightContext(ExecState* exec) const
+{
+ if (!d->lastOvector().isEmpty())
+ return jsSubstring(exec, d->lastInput, d->lastOvector()[1], d->lastInput.size() - d->lastOvector()[1]);
+ return jsEmptyString(exec);
+}
+
+bool RegExpConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+{
+ return getStaticValueSlot<RegExpConstructor, InternalFunction>(exec, ExecState::regExpConstructorTable(exec), this, propertyName, slot);
+}
+
+bool RegExpConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+ return getStaticValueDescriptor<RegExpConstructor, InternalFunction>(exec, ExecState::regExpConstructorTable(exec), this, propertyName, descriptor);
+}
+
+JSValue regExpConstructorDollar1(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 1);
+}
+
+JSValue regExpConstructorDollar2(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 2);
+}
+
+JSValue regExpConstructorDollar3(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 3);
+}
+
+JSValue regExpConstructorDollar4(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 4);
+}
+
+JSValue regExpConstructorDollar5(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 5);
+}
+
+JSValue regExpConstructorDollar6(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 6);
+}
+
+JSValue regExpConstructorDollar7(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 7);
+}
+
+JSValue regExpConstructorDollar8(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 8);
+}
+
+JSValue regExpConstructorDollar9(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 9);
+}
+
+JSValue regExpConstructorInput(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return jsString(exec, asRegExpConstructor(slotBase)->input());
+}
+
+JSValue regExpConstructorMultiline(ExecState*, JSValue slotBase, const Identifier&)
+{
+ return jsBoolean(asRegExpConstructor(slotBase)->multiline());
+}
+
+JSValue regExpConstructorLastMatch(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getBackref(exec, 0);
+}
+
+JSValue regExpConstructorLastParen(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getLastParen(exec);
+}
+
+JSValue regExpConstructorLeftContext(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getLeftContext(exec);
+}
+
+JSValue regExpConstructorRightContext(ExecState* exec, JSValue slotBase, const Identifier&)
+{
+ return asRegExpConstructor(slotBase)->getRightContext(exec);
+}
+
+void RegExpConstructor::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
+{
+ lookupPut<RegExpConstructor, InternalFunction>(exec, propertyName, value, ExecState::regExpConstructorTable(exec), this, slot);
+}
+
+void setRegExpConstructorInput(ExecState* exec, JSObject* baseObject, JSValue value)
+{
+ asRegExpConstructor(baseObject)->setInput(value.toString(exec));
+}
+
+void setRegExpConstructorMultiline(ExecState* exec, JSObject* baseObject, JSValue value)
+{
+ asRegExpConstructor(baseObject)->setMultiline(value.toBoolean(exec));
+}
+
+// ECMA 15.10.4
+JSObject* constructRegExp(ExecState* exec, const ArgList& args)
+{
+ JSValue arg0 = args.at(0);
+ JSValue arg1 = args.at(1);
+
+ if (arg0.inherits(&RegExpObject::info)) {
+ if (!arg1.isUndefined())
+ return throwError(exec, createTypeError(exec, "Cannot supply flags when constructing one RegExp from another."));
+ return asObject(arg0);
+ }
+
+ UString pattern = arg0.isUndefined() ? UString("") : arg0.toString(exec);
+ UString flags = arg1.isUndefined() ? UString("") : arg1.toString(exec);
+
+ RefPtr<RegExp> regExp = exec->globalData().regExpCache()->lookupOrCreate(pattern, flags);
+ if (!regExp->isValid())
+ return throwError(exec, createSyntaxError(exec, makeString("Invalid regular expression: ", regExp->errorMessage())));
+ return new (exec) RegExpObject(exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->regExpStructure(), regExp.release());
+}
+
+static EncodedJSValue JSC_HOST_CALL constructWithRegExpConstructor(ExecState* exec)
+{
+ ArgList args(exec);
+ return JSValue::encode(constructRegExp(exec, args));
+}
+
+ConstructType RegExpConstructor::getConstructData(ConstructData& constructData)
+{
+ constructData.native.function = constructWithRegExpConstructor;
+ return ConstructTypeHost;
+}
+
+// ECMA 15.10.3
+static EncodedJSValue JSC_HOST_CALL callRegExpConstructor(ExecState* exec)
+{
+ ArgList args(exec);
+ return JSValue::encode(constructRegExp(exec, args));
+}
+
+CallType RegExpConstructor::getCallData(CallData& callData)
+{
+ callData.native.function = callRegExpConstructor;
+ return CallTypeHost;
+}
+
+void RegExpConstructor::setInput(const UString& input)
+{
+ d->input = input;
+}
+
+const UString& RegExpConstructor::input() const
+{
+ // Can detect a distinct initial state that is invisible to JavaScript, by checking for null
+ // state (since jsString turns null strings to empty strings).
+ return d->input;
+}
+
+void RegExpConstructor::setMultiline(bool multiline)
+{
+ d->multiline = multiline;
+}
+
+bool RegExpConstructor::multiline() const
+{
+ return d->multiline;
+}
+
+} // namespace JSC