/// <summary>
/// Loads a Monkeyspeak script from a file into a <see cref="Monkeyspeak.Page"/>.
/// </summary>
/// <param name="filePath">the file path to the script</param>
/// <returns></returns>
/// <exception cref="System.IO.IOException"></exception>
public Page LoadFromFile(string filePath)
{
if (!File.Exists(filePath))
{
// small fix for NUnit cases where the path is a temp location, also useful when passing simple file names to this method
var path = Path.GetDirectoryName(Uri.UnescapeDataString(new UriBuilder(Assembly.GetExecutingAssembly()?.CodeBase).Path));
path = Path.Combine(path, filePath);
if (File.Exists(path))
{
filePath = path;
}
else
{
throw new IOException($"{path} does not exist");
}
}
using (var reader = new SStreamReader(filePath))
{
Page page = new Page(this);
using (var lexer = new Lexer(this, reader))
{
page.VisitingToken = VisitTokens;
page.GenerateBlocks(lexer);
page.VisitingToken = null;
}
return(page);
}
}
/// <summary>
/// Loads a Monkeyspeak script from a string into a <see cref="Monkeyspeak.Page"/>.
/// </summary>
/// <param name="chunk">String that contains the Monkeyspeak script source.</param>
/// <returns></returns>
public Page LoadFromString(string chunk)
{
if (string.IsNullOrWhiteSpace(chunk))
{
throw new NullReferenceException("chunk");
}
try
{
var stream = new MemoryStream(Encoding.UTF8.GetBytes(chunk));
using (var reader = new SStreamReader(stream, Encoding.UTF8))
{
Page page = new Page(this);
using (var lexer = new Lexer(this, reader))
{
page.VisitingToken = VisitTokens;
page.GenerateBlocks(lexer);
page.VisitingToken = null;
}
return(page);
}
}
catch (Exception ex)
{
Logger.Debug <MonkeyspeakEngine>(ex);
throw;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Lexer"/> class.
/// </summary>
/// <param name="engine">The engine.</param>
/// <param name="reader">The reader.</param>
public Lexer(MonkeyspeakEngine engine, SStreamReader reader)
: base(engine, reader)
{
varDeclSym = engine.Options.VariableDeclarationSymbol;
stringBeginSym = engine.Options.StringBeginSymbol;
stringEndSym = engine.Options.StringEndSymbol;
lineCommentSym = engine.Options.LineCommentSymbol;
}
/// <summary>
/// Loads a Monkeyspeak script from a Stream into <paramref name="existingPage"/>.
/// </summary>
/// <param name="existingPage">Reference to an existing Page</param>
/// <param name="stream">Stream that contains the Monkeyspeak script. Closes the stream.</param>
public void LoadFromStream(Page existingPage, Stream stream)
{
try
{
using (var reader = new SStreamReader(stream, true))
{
using (var lexer = new Lexer(this, reader))
{
existingPage.VisitingToken = VisitTokens;
existingPage.GenerateBlocks(lexer);
existingPage.VisitingToken = null;
}
}
}
catch (Exception ex)
{
Logger.Debug <MonkeyspeakEngine>(ex);
}
}
/// <summary>
/// Loads a Monkeyspeak script from a string into <paramref name="existingPage"/>. and
/// clears the old page
/// </summary>
/// <param name="existingPage">Reference to an existing Page</param>
/// <param name="chunk">String that contains the Monkeyspeak script source.</param>
/// <returns></returns>
public void LoadFromString(Page existingPage, string chunk)
{
try
{
var stream = new MemoryStream(Encoding.UTF8.GetBytes(chunk));
using (var reader = new SStreamReader(stream, Encoding.UTF8))
{
using (var lexer = new Lexer(this, reader))
{
existingPage.VisitingToken = VisitTokens;
existingPage.GenerateBlocks(lexer);
existingPage.VisitingToken = null;
}
}
}
catch (Exception ex)
{
Logger.Debug <MonkeyspeakEngine>(ex);
}
}
/// <summary>
/// Loads a Monkeyspeak script from a Stream into a <see cref="Monkeyspeak.Page"/>.
/// </summary>
/// <param name="stream">Stream that contains the Monkeyspeak script. Closes the stream.</param>
/// <returns><see cref="Monkeyspeak.Page"/></returns>
public Page LoadFromStream(Stream stream)
{
try
{
using (var reader = new SStreamReader(stream, true))
{
Page page = new Page(this);
using (var lexer = new Lexer(this, reader))
{
page.VisitingToken = VisitTokens;
page.GenerateBlocks(lexer);
page.VisitingToken = null;
}
return(page);
}
}
catch (Exception ex)
{
Logger.Debug <MonkeyspeakEngine>(ex);
}
return(new Page(this)); // return a empty page so that the top level caller is not destroyed by nullreference exceptions :)
}
protected AbstractLexer(MonkeyspeakEngine engine, SStreamReader reader)
{
this.reader = reader;
Engine = engine;
}
