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-rw-r--r--kjs/array_object.cpp869
1 files changed, 869 insertions, 0 deletions
diff --git a/kjs/array_object.cpp b/kjs/array_object.cpp
new file mode 100644
index 000000000..a23e08dae
--- /dev/null
+++ b/kjs/array_object.cpp
@@ -0,0 +1,869 @@
+// -*- c-basic-offset: 2 -*-
+/*
+ * This file is part of the KDE libraries
+ * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ * Copyright (C) 2003 Apple Computer, 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 "value.h"
+#include "object.h"
+#include "types.h"
+#include "interpreter.h"
+#include "operations.h"
+#include "array_object.h"
+#include "internal.h"
+#include "error_object.h"
+
+#include "array_object.lut.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#define MAX_INDEX 4294967294U // 2^32-2
+
+using namespace KJS;
+
+// ------------------------------ ArrayInstanceImp -----------------------------
+
+const unsigned sparseArrayCutoff = 10000;
+
+const ClassInfo ArrayInstanceImp::info = {"Array", 0, 0, 0};
+
+ArrayInstanceImp::ArrayInstanceImp(ObjectImp *proto, unsigned initialLength)
+ : ObjectImp(proto)
+ , length(initialLength)
+ , storageLength(initialLength < sparseArrayCutoff ? initialLength : 0)
+ , capacity(storageLength)
+ , storage(capacity ? (ValueImp **)calloc(capacity, sizeof(ValueImp *)) : 0)
+{
+}
+
+ArrayInstanceImp::ArrayInstanceImp(ObjectImp *proto, const List &list)
+ : ObjectImp(proto)
+ , length(list.size())
+ , storageLength(length)
+ , capacity(storageLength)
+ , storage(capacity ? (ValueImp **)malloc(sizeof(ValueImp *) * capacity) : 0)
+{
+ ListIterator it = list.begin();
+ unsigned l = length;
+ for (unsigned i = 0; i < l; ++i) {
+ storage[i] = (it++).imp();
+ }
+}
+
+ArrayInstanceImp::~ArrayInstanceImp()
+{
+ free(storage);
+}
+
+Value ArrayInstanceImp::get(ExecState *exec, const Identifier &propertyName) const
+{
+ if (propertyName == lengthPropertyName)
+ return Number(length);
+
+ bool ok;
+ unsigned index = propertyName.toArrayIndex(&ok);
+ if (ok) {
+ if (index >= length)
+ return Undefined();
+ if (index < storageLength) {
+ ValueImp *v = storage[index];
+ return v ? Value(v) : Undefined();
+ }
+ }
+
+ return ObjectImp::get(exec, propertyName);
+}
+
+Value ArrayInstanceImp::getPropertyByIndex(ExecState *exec,
+ unsigned index) const
+{
+ if (index > MAX_INDEX)
+ return ObjectImp::get(exec, Identifier::from(index));
+ if (index >= length)
+ return Undefined();
+ if (index < storageLength) {
+ ValueImp *v = storage[index];
+ return v ? Value(v) : Undefined();
+ }
+
+ return ObjectImp::get(exec, Identifier::from(index));
+}
+
+// Special implementation of [[Put]] - see ECMA 15.4.5.1
+void ArrayInstanceImp::put(ExecState *exec, const Identifier &propertyName, const Value &value, int attr)
+{
+ if (propertyName == lengthPropertyName) {
+ unsigned int newLen = value.toUInt32(exec);
+ if (value.toNumber(exec) != double(newLen)) {
+ Object err = Error::create(exec, RangeError, "Invalid array length.");
+ exec->setException(err);
+ return;
+ }
+ setLength(newLen, exec);
+ return;
+ }
+
+ bool ok;
+ unsigned index = propertyName.toArrayIndex(&ok);
+ if (ok) {
+ putPropertyByIndex(exec, index, value, attr);
+ return;
+ }
+
+ ObjectImp::put(exec, propertyName, value, attr);
+}
+
+void ArrayInstanceImp::putPropertyByIndex(ExecState *exec, unsigned index,
+ const Value &value, int attr)
+{
+ if (index < sparseArrayCutoff && index >= storageLength) {
+ resizeStorage(index + 1);
+ }
+
+ if (index >= length && index <= MAX_INDEX) {
+ length = index + 1;
+ }
+
+ if (index < storageLength) {
+ storage[index] = value.imp();
+ return;
+ }
+
+ assert(index >= sparseArrayCutoff);
+ ObjectImp::put(exec, Identifier::from(index), value, attr);
+}
+
+bool ArrayInstanceImp::hasProperty(ExecState *exec, const Identifier &propertyName) const
+{
+ if (propertyName == lengthPropertyName)
+ return true;
+
+ bool ok;
+ unsigned index = propertyName.toArrayIndex(&ok);
+ if (ok) {
+ if (index >= length)
+ return false;
+ if (index < storageLength) {
+ ValueImp *v = storage[index];
+ return v && v != UndefinedImp::staticUndefined;
+ }
+ }
+
+ return ObjectImp::hasProperty(exec, propertyName);
+}
+
+bool ArrayInstanceImp::hasPropertyByIndex(ExecState *exec, unsigned index) const
+{
+ if (index > MAX_INDEX)
+ return ObjectImp::hasProperty(exec, Identifier::from(index));
+ if (index >= length)
+ return false;
+ if (index < storageLength) {
+ ValueImp *v = storage[index];
+ return v && v != UndefinedImp::staticUndefined;
+ }
+
+ return ObjectImp::hasProperty(exec, Identifier::from(index));
+}
+
+bool ArrayInstanceImp::deleteProperty(ExecState *exec, const Identifier &propertyName)
+{
+ if (propertyName == lengthPropertyName)
+ return false;
+
+ bool ok;
+ unsigned index = propertyName.toArrayIndex(&ok);
+ if (ok) {
+ if (index >= length)
+ return true;
+ if (index < storageLength) {
+ storage[index] = 0;
+ return true;
+ }
+ }
+
+ return ObjectImp::deleteProperty(exec, propertyName);
+}
+
+bool ArrayInstanceImp::deletePropertyByIndex(ExecState *exec, unsigned index)
+{
+ if (index > MAX_INDEX)
+ return ObjectImp::deleteProperty(exec, Identifier::from(index));
+ if (index >= length)
+ return true;
+ if (index < storageLength) {
+ storage[index] = 0;
+ return true;
+ }
+
+ return ObjectImp::deleteProperty(exec, Identifier::from(index));
+}
+
+ReferenceList ArrayInstanceImp::propList(ExecState *exec, bool recursive)
+{
+ ReferenceList properties = ObjectImp::propList(exec,recursive);
+
+ // avoid fetching this every time through the loop
+ ValueImp *undefined = UndefinedImp::staticUndefined;
+
+ for (unsigned i = 0; i < storageLength; ++i) {
+ ValueImp *imp = storage[i];
+ if (imp && imp != undefined && !ObjectImp::hasProperty(exec,Identifier::from(i))) {
+ properties.append(Reference(this, i));
+ }
+ }
+ return properties;
+}
+
+void ArrayInstanceImp::resizeStorage(unsigned newLength)
+{
+ if (newLength < storageLength) {
+ memset(storage + newLength, 0, sizeof(ValueImp *) * (storageLength - newLength));
+ }
+ if (newLength > capacity) {
+ unsigned newCapacity;
+ if (newLength > sparseArrayCutoff) {
+ newCapacity = newLength;
+ } else {
+ newCapacity = (newLength * 3 + 1) / 2;
+ if (newCapacity > sparseArrayCutoff) {
+ newCapacity = sparseArrayCutoff;
+ }
+ }
+ storage = (ValueImp **)realloc(storage, newCapacity * sizeof (ValueImp *));
+ memset(storage + capacity, 0, sizeof(ValueImp *) * (newCapacity - capacity));
+ capacity = newCapacity;
+ }
+ storageLength = newLength;
+}
+
+void ArrayInstanceImp::setLength(unsigned newLength, ExecState *exec)
+{
+ if (newLength <= storageLength) {
+ resizeStorage(newLength);
+ }
+
+ if (newLength < length) {
+ ReferenceList sparseProperties;
+
+ _prop.addSparseArrayPropertiesToReferenceList(sparseProperties, Object(this));
+
+ ReferenceListIterator it = sparseProperties.begin();
+ while (it != sparseProperties.end()) {
+ Reference ref = it++;
+ bool ok;
+ unsigned index = ref.getPropertyName(exec).toArrayIndex(&ok);
+ if (ok && index > newLength) {
+ ref.deleteValue(exec);
+ }
+ }
+ }
+
+ length = newLength;
+}
+
+void ArrayInstanceImp::mark()
+{
+ ObjectImp::mark();
+ unsigned l = storageLength;
+ for (unsigned i = 0; i < l; ++i) {
+ ValueImp *imp = storage[i];
+ if (imp && !imp->marked())
+ imp->mark();
+ }
+}
+
+static ExecState *execForCompareByStringForQSort;
+
+static int compareByStringForQSort(const void *a, const void *b)
+{
+ ExecState *exec = execForCompareByStringForQSort;
+ ValueImp *va = *(ValueImp **)a;
+ ValueImp *vb = *(ValueImp **)b;
+ if (va->dispatchType() == UndefinedType) {
+ return vb->dispatchType() == UndefinedType ? 0 : 1;
+ }
+ if (vb->dispatchType() == UndefinedType) {
+ return -1;
+ }
+ return compare(va->dispatchToString(exec), vb->dispatchToString(exec));
+}
+
+void ArrayInstanceImp::sort(ExecState *exec)
+{
+ int lengthNotIncludingUndefined = pushUndefinedObjectsToEnd(exec);
+
+ execForCompareByStringForQSort = exec;
+ qsort(storage, lengthNotIncludingUndefined, sizeof(ValueImp *), compareByStringForQSort);
+ execForCompareByStringForQSort = 0;
+}
+
+namespace KJS {
+
+struct CompareWithCompareFunctionArguments {
+ CompareWithCompareFunctionArguments(ExecState *e, ObjectImp *cf)
+ : exec(e)
+ , compareFunction(cf)
+ , globalObject(e->dynamicInterpreter()->globalObject())
+ {
+ arguments.append(Undefined());
+ arguments.append(Undefined());
+ }
+
+ ExecState *exec;
+ ObjectImp *compareFunction;
+ List arguments;
+ Object globalObject;
+};
+
+}
+
+static CompareWithCompareFunctionArguments *compareWithCompareFunctionArguments;
+
+static int compareWithCompareFunctionForQSort(const void *a, const void *b)
+{
+ CompareWithCompareFunctionArguments *args = compareWithCompareFunctionArguments;
+
+ ValueImp *va = *(ValueImp **)a;
+ ValueImp *vb = *(ValueImp **)b;
+ if (va->dispatchType() == UndefinedType) {
+ return vb->dispatchType() == UndefinedType ? 0 : 1;
+ }
+ if (vb->dispatchType() == UndefinedType) {
+ return -1;
+ }
+
+ args->arguments.clear();
+ args->arguments.append(va);
+ args->arguments.append(vb);
+ double compareResult = args->compareFunction->call
+ (args->exec, args->globalObject, args->arguments).toNumber(args->exec);
+ return compareResult < 0 ? -1 : compareResult > 0 ? 1 : 0;
+}
+
+void ArrayInstanceImp::sort(ExecState *exec, Object &compareFunction)
+{
+ int lengthNotIncludingUndefined = pushUndefinedObjectsToEnd(exec);
+
+ CompareWithCompareFunctionArguments args(exec, compareFunction.imp());
+ compareWithCompareFunctionArguments = &args;
+ qsort(storage, lengthNotIncludingUndefined, sizeof(ValueImp *), compareWithCompareFunctionForQSort);
+ compareWithCompareFunctionArguments = 0;
+}
+
+unsigned ArrayInstanceImp::pushUndefinedObjectsToEnd(ExecState *exec)
+{
+ ValueImp *undefined = UndefinedImp::staticUndefined;
+
+ unsigned o = 0;
+
+ for (unsigned i = 0; i != storageLength; ++i) {
+ ValueImp *v = storage[i];
+ if (v && v != undefined) {
+ if (o != i)
+ storage[o] = v;
+ o++;
+ }
+ }
+
+ ReferenceList sparseProperties;
+ _prop.addSparseArrayPropertiesToReferenceList(sparseProperties, Object(this));
+ unsigned newLength = o + sparseProperties.length();
+
+ if (newLength > storageLength) {
+ resizeStorage(newLength);
+ }
+
+ ReferenceListIterator it = sparseProperties.begin();
+ while (it != sparseProperties.end()) {
+ Reference ref = it++;
+ storage[o] = ref.getValue(exec).imp();
+ ObjectImp::deleteProperty(exec, ref.getPropertyName(exec));
+ o++;
+ }
+
+ if (newLength != storageLength)
+ memset(storage + o, 0, sizeof(ValueImp *) * (storageLength - o));
+
+ return o;
+}
+
+// ------------------------------ ArrayPrototypeImp ----------------------------
+
+const ClassInfo ArrayPrototypeImp::info = {"Array", &ArrayInstanceImp::info, &arrayTable, 0};
+
+/* Source for array_object.lut.h
+@begin arrayTable 17
+ toString ArrayProtoFuncImp::ToString DontEnum|Function 0
+ toLocaleString ArrayProtoFuncImp::ToLocaleString DontEnum|Function 0
+ concat ArrayProtoFuncImp::Concat DontEnum|Function 1
+ join ArrayProtoFuncImp::Join DontEnum|Function 1
+ pop ArrayProtoFuncImp::Pop DontEnum|Function 0
+ push ArrayProtoFuncImp::Push DontEnum|Function 1
+ reverse ArrayProtoFuncImp::Reverse DontEnum|Function 0
+ shift ArrayProtoFuncImp::Shift DontEnum|Function 0
+ slice ArrayProtoFuncImp::Slice DontEnum|Function 2
+ sort ArrayProtoFuncImp::Sort DontEnum|Function 1
+ splice ArrayProtoFuncImp::Splice DontEnum|Function 2
+ unshift ArrayProtoFuncImp::UnShift DontEnum|Function 1
+@end
+*/
+
+// ECMA 15.4.4
+ArrayPrototypeImp::ArrayPrototypeImp(ExecState */*exec*/,
+ ObjectPrototypeImp *objProto)
+ : ArrayInstanceImp(objProto, 0)
+{
+ Value protect(this);
+ setInternalValue(Null());
+}
+
+Value ArrayPrototypeImp::get(ExecState *exec, const Identifier &propertyName) const
+{
+ //fprintf( stderr, "ArrayPrototypeImp::get(%s)\n", propertyName.ascii() );
+ return lookupGetFunction<ArrayProtoFuncImp, ArrayInstanceImp>( exec, propertyName, &arrayTable, this );
+}
+
+// ------------------------------ ArrayProtoFuncImp ----------------------------
+
+ArrayProtoFuncImp::ArrayProtoFuncImp(ExecState *exec, int i, int len)
+ : InternalFunctionImp(
+ static_cast<FunctionPrototypeImp*>(exec->lexicalInterpreter()->builtinFunctionPrototype().imp())
+ ), id(i)
+{
+ Value protect(this);
+ put(exec,lengthPropertyName,Number(len),DontDelete|ReadOnly|DontEnum);
+}
+
+bool ArrayProtoFuncImp::implementsCall() const
+{
+ return true;
+}
+
+// ECMA 15.4.4
+Value ArrayProtoFuncImp::call(ExecState *exec, Object &thisObj, const List &args)
+{
+ unsigned int length = thisObj.get(exec,lengthPropertyName).toUInt32(exec);
+
+ Value result;
+ switch (id) {
+ case ToLocaleString:
+ case ToString:
+
+ if (!thisObj.inherits(&ArrayInstanceImp::info)) {
+ Object err = Error::create(exec,TypeError);
+ exec->setException(err);
+ return err;
+ }
+
+ // fall through
+ case Join: {
+ UString separator = ",";
+ UString str = "";
+
+ if (id == Join && args.size() > 0 && !args[0].isA(UndefinedType))
+ separator = args[0].toString(exec);
+ for (unsigned int k = 0; k < length; k++) {
+ if (k >= 1)
+ str += separator;
+
+ Value element = thisObj.get(exec, k);
+ if (element.type() == UndefinedType || element.type() == NullType)
+ continue;
+
+ bool fallback = false;
+ if (id == ToLocaleString) {
+ Object o = element.toObject(exec);
+ Object conversionFunction =
+ Object::dynamicCast(o.get(exec, toLocaleStringPropertyName));
+ if (conversionFunction.isValid() &&
+ conversionFunction.implementsCall()) {
+ str += conversionFunction.call(exec, o, List()).toString(exec);
+ } else {
+ // try toString() fallback
+ fallback = true;
+ }
+ }
+ if (id == ToString || id == Join || fallback) {
+ if (element.type() == ObjectType) {
+ Object o = Object::dynamicCast(element);
+ Object conversionFunction =
+ Object::dynamicCast(o.get(exec, toStringPropertyName));
+ if (conversionFunction.isValid() &&
+ conversionFunction.implementsCall()) {
+ str += conversionFunction.call(exec, o, List()).toString(exec);
+ } else {
+ UString msg = "Can't convert " + o.className() +
+ " object to string";
+ Object error = Error::create(exec, RangeError,
+ msg.cstring().c_str());
+ exec->setException(error);
+ return error;
+ }
+ } else {
+ str += element.toString(exec);
+ }
+ }
+ if ( exec->hadException() )
+ break;
+ }
+ result = String(str);
+ break;
+ }
+ case Concat: {
+ Object arr = Object::dynamicCast(exec->lexicalInterpreter()->builtinArray().construct(exec,List::empty()));
+ int n = 0;
+ Value curArg = thisObj;
+ Object curObj = Object::dynamicCast(thisObj);
+ ListIterator it = args.begin();
+ for (;;) {
+ if (curArg.type() == ObjectType &&
+ curObj.inherits(&ArrayInstanceImp::info)) {
+ unsigned int k = 0;
+ // Older versions tried to optimize out getting the length of thisObj
+ // by checking for n != 0, but that doesn't work if thisObj is an empty array.
+ length = curObj.get(exec,lengthPropertyName).toUInt32(exec);
+ while (k < length) {
+ if (curObj.hasProperty(exec,k))
+ arr.put(exec, n, curObj.get(exec, k));
+ n++;
+ k++;
+ }
+ } else {
+ arr.put(exec, n, curArg);
+ n++;
+ }
+ if (it == args.end())
+ break;
+ curArg = *it;
+ curObj = Object::dynamicCast(it++); // may be 0
+ }
+ arr.put(exec,lengthPropertyName, Number(n), DontEnum | DontDelete);
+
+ result = arr;
+ break;
+ }
+ case Pop:{
+ if (length == 0) {
+ thisObj.put(exec, lengthPropertyName, Number(length), DontEnum | DontDelete);
+ result = Undefined();
+ } else {
+ result = thisObj.get(exec, length - 1);
+ thisObj.put(exec, lengthPropertyName, Number(length - 1), DontEnum | DontDelete);
+ }
+ break;
+ }
+ case Push: {
+ for (int n = 0; n < args.size(); n++)
+ thisObj.put(exec, length + n, args[n]);
+ length += args.size();
+ thisObj.put(exec,lengthPropertyName, Number(length), DontEnum | DontDelete);
+ result = Number(length);
+ break;
+ }
+ case Reverse: {
+
+ unsigned int middle = length / 2;
+
+ for (unsigned int k = 0; k < middle; k++) {
+ unsigned lk1 = length - k - 1;
+ Value obj = thisObj.get(exec,k);
+ Value obj2 = thisObj.get(exec,lk1);
+ if (thisObj.hasProperty(exec,lk1)) {
+ if (thisObj.hasProperty(exec,k)) {
+ thisObj.put(exec, k, obj2);
+ thisObj.put(exec, lk1, obj);
+ } else {
+ thisObj.put(exec, k, obj2);
+ thisObj.deleteProperty(exec, lk1);
+ }
+ } else {
+ if (thisObj.hasProperty(exec, k)) {
+ thisObj.deleteProperty(exec, k);
+ thisObj.put(exec, lk1, obj);
+ } else {
+ // why delete something that's not there ? Strange.
+ thisObj.deleteProperty(exec, k);
+ thisObj.deleteProperty(exec, lk1);
+ }
+ }
+ }
+ result = thisObj;
+ break;
+ }
+ case Shift: {
+ if (length == 0) {
+ thisObj.put(exec, lengthPropertyName, Number(length), DontEnum | DontDelete);
+ result = Undefined();
+ } else {
+ result = thisObj.get(exec, 0);
+ for(unsigned int k = 1; k < length; k++) {
+ if (thisObj.hasProperty(exec, k)) {
+ Value obj = thisObj.get(exec, k);
+ thisObj.put(exec, k-1, obj);
+ } else
+ thisObj.deleteProperty(exec, k-1);
+ }
+ thisObj.deleteProperty(exec, length - 1);
+ thisObj.put(exec, lengthPropertyName, Number(length - 1), DontEnum | DontDelete);
+ }
+ break;
+ }
+ case Slice: {
+ // http://developer.netscape.com/docs/manuals/js/client/jsref/array.htm#1193713 or 15.4.4.10
+
+ // We return a new array
+ Object resObj = Object::dynamicCast(exec->lexicalInterpreter()->builtinArray().construct(exec,List::empty()));
+ result = resObj;
+ int begin = 0;
+ if (args[0].type() != UndefinedType) {
+ begin = args[0].toInteger(exec);
+ if ( begin < 0 )
+ begin = maxInt( begin + length, 0 );
+ else
+ begin = minInt( begin, length );
+ }
+ int end = length;
+ if (args[1].type() != UndefinedType)
+ {
+ end = args[1].toInteger(exec);
+ if ( end < 0 )
+ end = maxInt( end + length, 0 );
+ else
+ end = minInt( end, length );
+ }
+
+ //printf( "Slicing from %d to %d \n", begin, end );
+ int n = 0;
+ for(int k = begin; k < end; k++, n++) {
+ if (thisObj.hasProperty(exec, k)) {
+ Value obj = thisObj.get(exec, k);
+ resObj.put(exec, n, obj);
+ }
+ }
+ resObj.put(exec, lengthPropertyName, Number(n), DontEnum | DontDelete);
+ break;
+ }
+ case Sort:{
+#if 0
+ printf("KJS Array::Sort length=%d\n", length);
+ for ( unsigned int i = 0 ; i<length ; ++i )
+ printf("KJS Array::Sort: %d: %s\n", i, thisObj.get(exec, i).toString(exec).ascii() );
+#endif
+ Object sortFunction;
+ bool useSortFunction = (args[0].type() != UndefinedType);
+ if (useSortFunction)
+ {
+ sortFunction = args[0].toObject(exec);
+ if (!sortFunction.implementsCall())
+ useSortFunction = false;
+ }
+
+ if (thisObj.imp()->classInfo() == &ArrayInstanceImp::info) {
+ if (useSortFunction)
+ ((ArrayInstanceImp *)thisObj.imp())->sort(exec, sortFunction);
+ else
+ ((ArrayInstanceImp *)thisObj.imp())->sort(exec);
+ result = thisObj;
+ break;
+ }
+
+ if (length == 0) {
+ thisObj.put(exec, lengthPropertyName, Number(0), DontEnum | DontDelete);
+ result = thisObj;
+ break;
+ }
+
+ // "Min" sort. Not the fastest, but definitely less code than heapsort
+ // or quicksort, and much less swapping than bubblesort/insertionsort.
+ for ( unsigned int i = 0 ; i<length-1 ; ++i )
+ {
+ Value iObj = thisObj.get(exec,i);
+ unsigned int themin = i;
+ Value minObj = iObj;
+ for ( unsigned int j = i+1 ; j<length ; ++j )
+ {
+ Value jObj = thisObj.get(exec,j);
+ double cmp;
+ if (jObj.type() == UndefinedType) {
+ cmp = 1; // don't check minObj because there's no need to differentiate == (0) from > (1)
+ } else if (minObj.type() == UndefinedType) {
+ cmp = -1;
+ } else if (useSortFunction) {
+ List l;
+ l.append(jObj);
+ l.append(minObj);
+ cmp = sortFunction.call(exec, exec->dynamicInterpreter()->globalObject(), l).toNumber(exec);
+ } else {
+ cmp = (jObj.toString(exec) < minObj.toString(exec)) ? -1 : 1;
+ }
+ if ( cmp < 0 )
+ {
+ themin = j;
+ minObj = jObj;
+ }
+ }
+ // Swap themin and i
+ if ( themin > i )
+ {
+ //printf("KJS Array::Sort: swapping %d and %d\n", i, themin );
+ thisObj.put( exec, i, minObj );
+ thisObj.put( exec, themin, iObj );
+ }
+ }
+#if 0
+ printf("KJS Array::Sort -- Resulting array:\n");
+ for ( unsigned int i = 0 ; i<length ; ++i )
+ printf("KJS Array::Sort: %d: %s\n", i, thisObj.get(exec, i).toString(exec).ascii() );
+#endif
+ result = thisObj;
+ break;
+ }
+ case Splice: {
+ // 15.4.4.12 - oh boy this is huge
+ Object resObj = Object::dynamicCast(exec->lexicalInterpreter()->builtinArray().construct(exec,List::empty()));
+ result = resObj;
+ int begin = args[0].toUInt32(exec);
+ if ( begin < 0 )
+ begin = maxInt( begin + length, 0 );
+ else
+ begin = minInt( begin, length );
+ unsigned int deleteCount = minInt( maxInt( args[1].toUInt32(exec), 0 ), length - begin );
+
+ //printf( "Splicing from %d, deleteCount=%d \n", begin, deleteCount );
+ for(unsigned int k = 0; k < deleteCount; k++) {
+ if (thisObj.hasProperty(exec,k+begin)) {
+ Value obj = thisObj.get(exec, k+begin);
+ resObj.put(exec, k, obj);
+ }
+ }
+ resObj.put(exec, lengthPropertyName, Number(deleteCount), DontEnum | DontDelete);
+
+ unsigned int additionalArgs = maxInt( args.size() - 2, 0 );
+ if ( additionalArgs != deleteCount )
+ {
+ if ( additionalArgs < deleteCount )
+ {
+ for ( unsigned int k = begin; k < length - deleteCount; ++k )
+ {
+ if (thisObj.hasProperty(exec,k+deleteCount)) {
+ Value obj = thisObj.get(exec, k+deleteCount);
+ thisObj.put(exec, k+additionalArgs, obj);
+ }
+ else
+ thisObj.deleteProperty(exec, k+additionalArgs);
+ }
+ for ( unsigned int k = length ; k > length - deleteCount + additionalArgs; --k )
+ thisObj.deleteProperty(exec, k-1);
+ }
+ else
+ {
+ for ( unsigned int k = length - deleteCount; (int)k > begin; --k )
+ {
+ if (thisObj.hasProperty(exec,k+deleteCount-1)) {
+ Value obj = thisObj.get(exec, k+deleteCount-1);
+ thisObj.put(exec, k+additionalArgs-1, obj);
+ }
+ else
+ thisObj.deleteProperty(exec, k+additionalArgs-1);
+ }
+ }
+ }
+ for ( unsigned int k = 0; k < additionalArgs; ++k )
+ {
+ thisObj.put(exec, k+begin, args[k+2]);
+ }
+ thisObj.put(exec, lengthPropertyName, Number(length - deleteCount + additionalArgs), DontEnum | DontDelete);
+ break;
+ }
+ case UnShift: { // 15.4.4.13
+ unsigned int nrArgs = args.size();
+ for ( unsigned int k = length; k > 0; --k )
+ {
+ if (thisObj.hasProperty(exec,k-1)) {
+ Value obj = thisObj.get(exec, k-1);
+ thisObj.put(exec, k+nrArgs-1, obj);
+ } else {
+ thisObj.deleteProperty(exec, k+nrArgs-1);
+ }
+ }
+ for ( unsigned int k = 0; k < nrArgs; ++k )
+ thisObj.put(exec, k, args[k]);
+ result = Number(length + nrArgs);
+ thisObj.put(exec, lengthPropertyName, result, DontEnum | DontDelete);
+ break;
+ }
+ default:
+ assert(0);
+ break;
+ }
+ return result;
+}
+
+// ------------------------------ ArrayObjectImp -------------------------------
+
+ArrayObjectImp::ArrayObjectImp(ExecState *exec,
+ FunctionPrototypeImp *funcProto,
+ ArrayPrototypeImp *arrayProto)
+ : InternalFunctionImp(funcProto)
+{
+ Value protect(this);
+ // ECMA 15.4.3.1 Array.prototype
+ put(exec,prototypePropertyName, Object(arrayProto), DontEnum|DontDelete|ReadOnly);
+
+ // no. of arguments for constructor
+ put(exec,lengthPropertyName, Number(1), ReadOnly|DontDelete|DontEnum);
+}
+
+bool ArrayObjectImp::implementsConstruct() const
+{
+ return true;
+}
+
+// ECMA 15.4.2
+Object ArrayObjectImp::construct(ExecState *exec, const List &args)
+{
+ // a single numeric argument denotes the array size (!)
+ if (args.size() == 1 && args[0].type() == NumberType) {
+ unsigned int n = args[0].toUInt32(exec);
+ if (n != args[0].toNumber(exec)) {
+ Object error = Error::create(exec, RangeError, "Invalid array length.");
+ exec->setException(error);
+ return error;
+ }
+ return Object(new ArrayInstanceImp(exec->lexicalInterpreter()->builtinArrayPrototype().imp(), n));
+ }
+
+ // otherwise the array is constructed with the arguments in it
+ return Object(new ArrayInstanceImp(exec->lexicalInterpreter()->builtinArrayPrototype().imp(), args));
+}
+
+bool ArrayObjectImp::implementsCall() const
+{
+ return true;
+}
+
+// ECMA 15.6.1
+Value ArrayObjectImp::call(ExecState *exec, Object &/*thisObj*/, const List &args)
+{
+ // equivalent to 'new Array(....)'
+ return construct(exec,args);
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-02 19:16:21 +0000