public override void Parse(string code,
out CommonTokenStream TokStream,
out Parser Parser,
out Lexer Lexer,
out IParseTree ParseTree)
{
IParseTree pt = null;
// Set up Antlr to parse input grammar.
byte[] byteArray = Encoding.UTF8.GetBytes(code);
AntlrInputStream ais = new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd());
var lexer = new lbnfLexer(ais);
CommonTokenStream cts = new CommonTokenStream(lexer);
var parser = new lbnfParser(cts);
lexer.RemoveErrorListeners();
var lexer_error_listener = new ErrorListener <int>(parser, lexer, this.QuietAfter);
lexer.AddErrorListener(lexer_error_listener);
parser.RemoveErrorListeners();
var parser_error_listener = new ErrorListener <IToken>(parser, lexer, this.QuietAfter);
parser.AddErrorListener(parser_error_listener);
try
{
pt = parser.start_LGrammar();
}
catch (Exception)
{
// Parsing error.
}
TokStream = cts;
Parser = parser;
Lexer = lexer;
ParseTree = pt;
}
public override void Parse(ParsingResults pd, bool bail)
{
string ffn = pd.FullFileName;
string code = pd.Code;
if (ffn == null)
{
return;
}
if (code == null)
{
return;
}
this.QuietAfter = pd.QuietAfter;
IParseTree pt = null;
// Set up Antlr to parse input grammar.
byte[] byteArray = Encoding.UTF8.GetBytes(code);
AntlrInputStream ais = new AntlrInputStream(
new StreamReader(
new MemoryStream(byteArray)).ReadToEnd())
{
name = ffn
};
var lexer = new lbnfLexer(ais);
CommonTokenStream cts = new CommonTokenStream(lexer);
var parser = new lbnfParser(cts);
lexer.RemoveErrorListeners();
var lexer_error_listener = new ErrorListener <int>(parser, lexer, pd.QuietAfter);
lexer.AddErrorListener(lexer_error_listener);
parser.RemoveErrorListeners();
var parser_error_listener = new ErrorListener <IToken>(parser, lexer, pd.QuietAfter);
parser.AddErrorListener(parser_error_listener);
BailErrorHandler bail_error_handler = null;
if (bail)
{
bail_error_handler = new BailErrorHandler();
parser.ErrorHandler = bail_error_handler;
}
try
{
pt = parser.start_LGrammar();
}
catch (Exception)
{
// Parsing error.
}
//StringBuilder sb = new StringBuilder();
//TreeSerializer.ParenthesizedAST(pt, sb, "", cts);
//string fn = System.IO.Path.GetFileName(ffn);
//fn = "c:\\temp\\" + fn;
//System.IO.File.WriteAllText(fn, sb.ToString());
if (parser_error_listener.had_error || lexer_error_listener.had_error || (bail_error_handler != null && bail_error_handler.had_error))
{
System.Console.Error.WriteLine("Error in parse of " + ffn);
}
else
{
System.Console.Error.WriteLine("Parse completed of " + ffn);
}
pd.TokStream = cts;
pd.Parser = parser;
pd.Lexer = lexer;
pd.ParseTree = pt;
Stack <IParseTree> stack = new Stack <IParseTree>();
stack.Push(pt);
while (stack.Any())
{
var x = stack.Pop();
if (x is TerminalNodeImpl leaf)
{
}
else
{
var y = x as AttributedParseTreeNode;
if (y != null)
{
y.ParserDetails = pd;
}
for (int i = 0; i < x.ChildCount; ++i)
{
var c = x.GetChild(i);
if (c != null)
{
stack.Push(c);
}
}
}
}
}
