xref: /external/chromium_org/v8/src/v8conversions.h

// 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:
//
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//       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
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//       with the distribution.
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//
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#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);

// Converts a number into size_t.
inline size_t NumberToSize(Isolate* isolate,
                           Object* number) {
  SealHandleScope shs(isolate);
  if (number->IsSmi()) {
    return Smi::cast(number)->value();
  } else {
    ASSERT(number->IsHeapNumber());
    double value = HeapNumber::cast(number)->value();
    return static_cast<size_t>(value);
  }
}

} }  // namespace v8::internal

#endif  // V8_V8CONVERSIONS_H_