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-rw-r--r--chromium/v8/src/v8conversions.h95
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diff --git a/chromium/v8/src/v8conversions.h b/chromium/v8/src/v8conversions.h
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-// Copyright 2011 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_V8CONVERSIONS_H_
-#define V8_V8CONVERSIONS_H_
-
-#include "conversions.h"
-
-namespace v8 {
-namespace internal {
-
-// Convert from Number object to C integer.
-inline int32_t NumberToInt32(Object* number) {
- if (number->IsSmi()) return Smi::cast(number)->value();
- return DoubleToInt32(number->Number());
-}
-
-
-inline uint32_t NumberToUint32(Object* number) {
- if (number->IsSmi()) return Smi::cast(number)->value();
- return DoubleToUint32(number->Number());
-}
-
-
-// Converts a string into a double value according to ECMA-262 9.3.1
-double StringToDouble(UnicodeCache* unicode_cache,
- String* str,
- int flags,
- double empty_string_val = 0);
-
-// Converts a string into an integer.
-double StringToInt(UnicodeCache* unicode_cache, String* str, int radix);
-
-inline bool TryNumberToSize(Isolate* isolate,
- Object* number, size_t* result) {
- SealHandleScope shs(isolate);
- if (number->IsSmi()) {
- int value = Smi::cast(number)->value();
- ASSERT(
- static_cast<unsigned>(Smi::kMaxValue)
- <= std::numeric_limits<size_t>::max());
- if (value >= 0) {
- *result = static_cast<size_t>(value);
- return true;
- }
- return false;
- } else {
- ASSERT(number->IsHeapNumber());
- double value = HeapNumber::cast(number)->value();
- if (value >= 0 &&
- value <= std::numeric_limits<size_t>::max()) {
- *result = static_cast<size_t>(value);
- return true;
- } else {
- return false;
- }
- }
-}
-
-// Converts a number into size_t.
-inline size_t NumberToSize(Isolate* isolate,
- Object* number) {
- size_t result = 0;
- bool is_valid = TryNumberToSize(isolate, number, &result);
- CHECK(is_valid);
- return result;
-}
-
-} } // namespace v8::internal
-
-#endif // V8_V8CONVERSIONS_H_