internal IMemoryOwner <char> JsCopyStringUtf16Pooled()
{
const int start = 0;
int length = int.MaxValue;
var errorCode = NativeMethods.JsCopyStringUtf16(this, start, length, null, out var written);
JsErrorHelpers.ThrowIfError(errorCode);
length = (int)written;
var buffer = ArrayPool <char> .Shared.Rent(length);
unsafe
{
fixed(char *bufferPtr = buffer)
{
JsErrorHelpers.ThrowIfError(NativeMethods.JsCopyStringUtf16(this, start, length, (IntPtr)bufferPtr, out written));
}
}
return(new PooledCharBuffer(buffer, length));
}
/// <summary>
/// Retrieves a string pointer of a <c>String</c> value
/// </summary>
/// <remarks>
/// <para>
/// This function retrieves the string pointer of a <c>String</c> value. It will fail with
/// <c>InvalidArgument</c> if the type of the value is not <c>String</c>.
/// </para>
/// <para>
/// Requires an active script context.
/// </para>
/// </remarks>
/// <returns>The string</returns>
public new string ToString()
{
string result;
JsErrorCode errorCode;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
int start = 0;
int length = int.MaxValue;
char[] buffer = null;
UIntPtr written;
errorCode = NativeMethods.JsCopyStringUtf16(this, start, length, buffer, out written);
JsErrorHelpers.ThrowIfError(errorCode);
var charArrayPool = ArrayPool <char> .Shared;
length = (int)written;
buffer = charArrayPool.Rent(length + 1);
buffer[length] = '\0';
try
{
errorCode = NativeMethods.JsCopyStringUtf16(this, start, length, buffer, out written);
JsErrorHelpers.ThrowIfError(errorCode);
result = new string(buffer, start, length);
}
finally
{
charArrayPool.Return(buffer);
}
}
else
{
byte[] buffer = null;
UIntPtr bufferSize = UIntPtr.Zero;
UIntPtr length;
errorCode = NativeMethods.JsCopyString(this, buffer, bufferSize, out length);
JsErrorHelpers.ThrowIfError(errorCode);
var byteArrayPool = ArrayPool <byte> .Shared;
bufferSize = length;
int bufferLength = (int)bufferSize;
buffer = byteArrayPool.Rent(bufferLength + 1);
buffer[bufferLength] = 0;
try
{
errorCode = NativeMethods.JsCopyString(this, buffer, bufferSize, out length);
JsErrorHelpers.ThrowIfError(errorCode);
result = Encoding.UTF8.GetString(buffer, 0, bufferLength);
}
finally
{
byteArrayPool.Return(buffer);
}
}
return(result);
}
