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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/runtime/runtime-utils.h" | 5 #include "src/runtime/runtime-utils.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/base/bits.h" | 8 #include "src/base/bits.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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26 HandleScope handle_scope(isolate); | 26 HandleScope handle_scope(isolate); |
27 DCHECK_EQ(1, args.length()); | 27 DCHECK_EQ(1, args.length()); |
28 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); | 28 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); |
29 return *String::ToNumber(subject); | 29 return *String::ToNumber(subject); |
30 } | 30 } |
31 | 31 |
32 | 32 |
33 // ES6 18.2.5 parseInt(string, radix) slow path | 33 // ES6 18.2.5 parseInt(string, radix) slow path |
34 RUNTIME_FUNCTION(Runtime_StringParseInt) { | 34 RUNTIME_FUNCTION(Runtime_StringParseInt) { |
35 HandleScope handle_scope(isolate); | 35 HandleScope handle_scope(isolate); |
36 DCHECK(args.length() == 2); | 36 DCHECK_EQ(2, args.length()); |
37 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); | 37 CONVERT_ARG_HANDLE_CHECKED(Object, string, 0); |
38 CONVERT_NUMBER_CHECKED(int, radix, Int32, args[1]); | 38 CONVERT_ARG_HANDLE_CHECKED(Object, radix, 1); |
39 // Step 8.a. is already handled in the JS function. | |
40 CHECK(radix == 0 || (2 <= radix && radix <= 36)); | |
41 | 39 |
| 40 // Convert {string} to a String first, and flatten it. |
| 41 Handle<String> subject; |
| 42 ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, subject, |
| 43 Object::ToString(isolate, string)); |
42 subject = String::Flatten(subject); | 44 subject = String::Flatten(subject); |
43 double value; | |
44 | 45 |
| 46 // Convert {radix} to Int32. |
| 47 if (!radix->IsNumber()) { |
| 48 ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, radix, Object::ToNumber(radix)); |
| 49 } |
| 50 int radix32 = DoubleToInt32(radix->Number()); |
| 51 if (radix32 != 0 && (radix32 < 2 || radix32 > 36)) { |
| 52 return isolate->heap()->nan_value(); |
| 53 } |
| 54 |
| 55 double result; |
45 { | 56 { |
46 DisallowHeapAllocation no_gc; | 57 DisallowHeapAllocation no_gc; |
47 String::FlatContent flat = subject->GetFlatContent(); | 58 String::FlatContent flat = subject->GetFlatContent(); |
48 | 59 |
49 if (flat.IsOneByte()) { | 60 if (flat.IsOneByte()) { |
50 value = | 61 result = StringToInt(isolate->unicode_cache(), flat.ToOneByteVector(), |
51 StringToInt(isolate->unicode_cache(), flat.ToOneByteVector(), radix); | 62 radix32); |
52 } else { | 63 } else { |
53 value = StringToInt(isolate->unicode_cache(), flat.ToUC16Vector(), radix); | 64 result = |
| 65 StringToInt(isolate->unicode_cache(), flat.ToUC16Vector(), radix32); |
54 } | 66 } |
55 } | 67 } |
56 | 68 |
57 return *isolate->factory()->NewNumber(value); | 69 return *isolate->factory()->NewNumber(result); |
58 } | 70 } |
59 | 71 |
60 | 72 |
61 // ES6 18.2.4 parseFloat(string) | 73 // ES6 18.2.4 parseFloat(string) |
62 RUNTIME_FUNCTION(Runtime_StringParseFloat) { | 74 RUNTIME_FUNCTION(Runtime_StringParseFloat) { |
63 HandleScope shs(isolate); | 75 HandleScope shs(isolate); |
64 DCHECK(args.length() == 1); | 76 DCHECK(args.length() == 1); |
65 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); | 77 CONVERT_ARG_HANDLE_CHECKED(String, subject, 0); |
66 | 78 |
67 double value = | 79 double value = |
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217 | 229 |
218 RUNTIME_FUNCTION(Runtime_GetHoleNaNLower) { | 230 RUNTIME_FUNCTION(Runtime_GetHoleNaNLower) { |
219 HandleScope scope(isolate); | 231 HandleScope scope(isolate); |
220 DCHECK(args.length() == 0); | 232 DCHECK(args.length() == 0); |
221 return *isolate->factory()->NewNumberFromUint(kHoleNanLower32); | 233 return *isolate->factory()->NewNumberFromUint(kHoleNanLower32); |
222 } | 234 } |
223 | 235 |
224 | 236 |
225 } // namespace internal | 237 } // namespace internal |
226 } // namespace v8 | 238 } // namespace v8 |
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