forked from jasder/antlr
85 lines
3.1 KiB
C#
85 lines
3.1 KiB
C#
/*
|
|
* [The "BSD license"]
|
|
* Copyright (c) 2013 Terence Parr
|
|
* Copyright (c) 2013 Sam Harwell
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
using Sharpen;
|
|
using Encoding = System.Text.Encoding;
|
|
using File = System.IO.File;
|
|
|
|
namespace Antlr4.Runtime
|
|
{
|
|
/// <summary>
|
|
/// This is an ANTLRInputStream that is loaded from a file
|
|
/// all at once when you construct the object.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This is an ANTLRInputStream that is loaded from a file
|
|
/// all at once when you construct the object. This is a special case
|
|
/// since we know the exact size of the object to load. We can avoid lots
|
|
/// of data copying.
|
|
/// </remarks>
|
|
public class AntlrFileStream : AntlrInputStream
|
|
{
|
|
protected internal string fileName;
|
|
|
|
/// <exception cref="System.IO.IOException"></exception>
|
|
public AntlrFileStream(string fileName) : this(fileName, null)
|
|
{
|
|
}
|
|
|
|
/// <exception cref="System.IO.IOException"></exception>
|
|
public AntlrFileStream(string fileName, string encoding)
|
|
{
|
|
this.fileName = fileName;
|
|
Load(fileName, encoding);
|
|
}
|
|
|
|
/// <exception cref="System.IO.IOException"></exception>
|
|
public virtual void Load(string fileName, string encoding)
|
|
{
|
|
if (fileName == null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Encoding fileEncoding = Encoding.GetEncoding(encoding);
|
|
string text = File.ReadAllText(fileName, fileEncoding);
|
|
data = text.ToCharArray();
|
|
n = data.Length;
|
|
}
|
|
|
|
public override string SourceName
|
|
{
|
|
get
|
|
{
|
|
return fileName;
|
|
}
|
|
}
|
|
}
|
|
}
|