147 lines
5.4 KiB
C++
147 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the JavaScript 2 Prototype.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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#ifdef _WIN32
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#include "msvc_pragma.h"
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#endif
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#include <algorithm>
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#include <list>
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#include <map>
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#include <stack>
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#include "world.h"
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#include "utilities.h"
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#include "js2value.h"
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#include "numerics.h"
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#include "reader.h"
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#include "parser.h"
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#include "regexp.h"
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#include "js2engine.h"
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#include "bytecodecontainer.h"
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#include "js2metadata.h"
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namespace JavaScript {
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namespace MetaData {
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js2val Number_Constructor(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
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{
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js2val thatValue = OBJECT_TO_JS2VAL(new NumberInstance(meta, meta->numberClass->prototype, meta->numberClass));
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NumberInstance *numInst = checked_cast<NumberInstance *>(JS2VAL_TO_OBJECT(thatValue));
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if (argc > 0)
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numInst->mValue = meta->toFloat64(argv[0]);
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else
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numInst->mValue = 0.0;
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return thatValue;
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}
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static js2val Number_Call(JS2Metadata *meta, const js2val thisValue, js2val argv[], uint32 argc)
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{
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if (argc > 0)
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return meta->engine->allocNumber(meta->toFloat64(argv[0]));
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else
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return JS2VAL_ZERO;
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}
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static js2val Number_toString(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
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{
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if (!JS2VAL_IS_OBJECT(thisValue)
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|| (JS2VAL_TO_OBJECT(thisValue)->kind != SimpleInstanceKind)
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|| ((checked_cast<SimpleInstance *>(JS2VAL_TO_OBJECT(thisValue)))->type != meta->numberClass))
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meta->reportError(Exception::typeError, "Number.toString called on something other than a number thing", meta->engine->errorPos());
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NumberInstance *numInst = checked_cast<NumberInstance *>(JS2VAL_TO_OBJECT(thisValue));
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return STRING_TO_JS2VAL(meta->engine->numberToString(&numInst->mValue));
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}
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static js2val Number_valueOf(JS2Metadata *meta, const js2val thisValue, js2val * /*argv*/, uint32 /*argc*/)
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{
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if (!JS2VAL_IS_OBJECT(thisValue)
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|| (JS2VAL_TO_OBJECT(thisValue)->kind != SimpleInstanceKind)
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|| ((checked_cast<SimpleInstance *>(JS2VAL_TO_OBJECT(thisValue)))->type != meta->numberClass))
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meta->reportError(Exception::typeError, "Number.valueOf called on something other than a number thing", meta->engine->errorPos());
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NumberInstance *numInst = checked_cast<NumberInstance *>(JS2VAL_TO_OBJECT(thisValue));
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return meta->engine->allocNumber(numInst->mValue);
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}
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void initNumberObject(JS2Metadata *meta)
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{
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NamespaceList publicNamespaceList;
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publicNamespaceList.push_back(meta->publicNamespace);
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meta->numberClass->construct = Number_Constructor;
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meta->numberClass->call = Number_Call;
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#define N_CONSTANTS_COUNT (5)
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struct {
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char *name;
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float64 value;
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} NumberObjectConstants[N_CONSTANTS_COUNT] = {
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{ "MAX_VALUE", maxDouble },
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{ "MIN_VALUE", minDouble },
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{ "NaN", nan },
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{ "POSITIVE_INFINITY", positiveInfinity },
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{ "NEGATIVE_INFINITY", negativeInfinity },
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};
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uint32 i;
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meta->env->addFrame(meta->numberClass);
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for (i = 0; i < N_CONSTANTS_COUNT; i++)
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{
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Variable *v = new Variable(meta->numberClass, meta->engine->allocNumber(NumberObjectConstants[i].value), true);
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meta->defineLocalMember(meta->env, &meta->world.identifiers[NumberObjectConstants[i].name], publicNamespaceList, Attribute::NoOverride, false, ReadWriteAccess, v, 0, false);
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}
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meta->env->removeTopFrame();
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FunctionData prototypeFunctions[] =
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{
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{ "toString", 0, Number_toString },
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{ "valueOf", 0, Number_valueOf },
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{ NULL }
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};
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meta->numberClass->prototype = OBJECT_TO_JS2VAL(new NumberInstance(meta, meta->objectClass->prototype, meta->numberClass));
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meta->initBuiltinClass(meta->numberClass, &prototypeFunctions[0], NULL, Number_Constructor, Number_Call);
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}
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}
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}
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