1/*
2 * Copyright (C) 2017 Caio Lima <ticaiolima@gmail.com>.
3 * Copyright (C) 2017 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "BigIntPrototype.h"
29
30#include "BigIntObject.h"
31#include "Error.h"
32#include "JSBigInt.h"
33#include "JSCBuiltins.h"
34#include "JSCInlines.h"
35#include "JSCast.h"
36#include "JSFunction.h"
37#include "JSGlobalObject.h"
38#include "JSString.h"
39#include "NumberPrototype.h"
40#include <wtf/Assertions.h>
41
42namespace JSC {
43
44static EncodedJSValue JSC_HOST_CALL bigIntProtoFuncToString(ExecState*);
45static EncodedJSValue JSC_HOST_CALL bigIntProtoFuncToLocaleString(ExecState*);
46static EncodedJSValue JSC_HOST_CALL bigIntProtoFuncValueOf(ExecState*);
47
48}
49
50#include "BigIntPrototype.lut.h"
51
52namespace JSC {
53
54const ClassInfo BigIntPrototype::s_info = { "BigInt", &Base::s_info, &bigIntPrototypeTable, nullptr, CREATE_METHOD_TABLE(BigIntPrototype) };
55
56/* Source for BigIntPrototype.lut.h
57@begin bigIntPrototypeTable
58 toString bigIntProtoFuncToString DontEnum|Function 0
59 toLocaleString bigIntProtoFuncToLocaleString DontEnum|Function 0
60 valueOf bigIntProtoFuncValueOf DontEnum|Function 0
61@end
62*/
63
64STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(BigIntPrototype);
65
66BigIntPrototype::BigIntPrototype(VM& vm, Structure* structure)
67 : JSNonFinalObject(vm, structure)
68{
69}
70
71void BigIntPrototype::finishCreation(VM& vm, JSGlobalObject*)
72{
73 Base::finishCreation(vm);
74 ASSERT(inherits(vm, info()));
75 putDirectWithoutTransition(vm, vm.propertyNames->toStringTagSymbol, jsString(&vm, "BigInt"), PropertyAttribute::DontEnum | PropertyAttribute::ReadOnly);
76}
77
78// ------------------------------ Functions ---------------------------
79
80static ALWAYS_INLINE JSBigInt* toThisBigIntValue(VM& vm, JSValue thisValue)
81{
82 if (thisValue.isCell()) {
83 if (JSBigInt* bigInt = jsDynamicCast<JSBigInt*>(vm, thisValue.asCell()))
84 return bigInt;
85
86 if (BigIntObject* bigIntObject = jsDynamicCast<BigIntObject*>(vm, thisValue.asCell()))
87 return bigIntObject->internalValue();
88 }
89
90 return nullptr;
91}
92
93EncodedJSValue JSC_HOST_CALL bigIntProtoFuncToString(ExecState* state)
94{
95 VM& vm = state->vm();
96 auto scope = DECLARE_THROW_SCOPE(vm);
97
98 JSBigInt* value = toThisBigIntValue(vm, state->thisValue());
99 if (!value)
100 return throwVMTypeError(state, scope, "'this' value must be a BigInt or BigIntObject"_s);
101
102 ASSERT(value);
103
104 int32_t radix = extractToStringRadixArgument(state, state->argument(0), scope);
105 RETURN_IF_EXCEPTION(scope, encodedJSValue());
106
107 String resultString = value->toString(state, radix);
108 RETURN_IF_EXCEPTION(scope, encodedJSValue());
109 scope.release();
110 if (resultString.length() == 1)
111 return JSValue::encode(vm.smallStrings.singleCharacterString(resultString[0]));
112
113 return JSValue::encode(jsNontrivialString(&vm, resultString));
114}
115
116EncodedJSValue JSC_HOST_CALL bigIntProtoFuncToLocaleString(ExecState* state)
117{
118 return bigIntProtoFuncToString(state);
119}
120
121EncodedJSValue JSC_HOST_CALL bigIntProtoFuncValueOf(ExecState* state)
122{
123 VM& vm = state->vm();
124 if (JSBigInt* value = toThisBigIntValue(vm, state->thisValue()))
125 return JSValue::encode(value);
126
127 auto scope = DECLARE_THROW_SCOPE(vm);
128 return throwVMTypeError(state, scope, "'this' value must be a BigInt or BigIntObject"_s);
129}
130
131} // namespace JSC
132