/// <summary>
/// Get parsed tree node from text by antlr4 engine.
/// </summary>
/// <param name="text">Original text which will be parsed.</param>
/// <returns>Parsed tree node.</returns>
private static LGFileParser.FileContext GetFileContentContext(string text, string source)
{
if (string.IsNullOrEmpty(text))
{
return(null);
}
var input = new AntlrInputStream(text);
var lexer = new LGFileLexer(input);
var tokens = new CommonTokenStream(lexer);
var parser = new LGFileParser(tokens);
parser.RemoveErrorListeners();
var listener = new ErrorListener(source);
parser.AddErrorListener(listener);
parser.BuildParseTree = true;
return(parser.file());
}
/// <summary>
/// Parse LG content and achieve the AST.
/// </summary>
/// <param name="resource">LG resource.</param>
/// <returns>The abstract syntax tree of lg file.</returns>
public static IParseTree AntlrParseTemplates(LGResource resource)
{
if (string.IsNullOrEmpty(resource.Content))
{
return(null);
}
var input = new AntlrInputStream(resource.Content);
var lexer = new LGFileLexer(input);
lexer.RemoveErrorListeners();
var tokens = new CommonTokenStream(lexer);
var parser = new LGFileParser(tokens);
parser.RemoveErrorListeners();
var listener = new ErrorListener(resource.FullName);
parser.AddErrorListener(listener);
parser.BuildParseTree = true;
return(parser.file());
}
private static IParseTree AntlrParseTemplates(string text, string id)
{
if (string.IsNullOrEmpty(text))
{
return(null);
}
var input = new AntlrInputStream(text);
var lexer = new LGFileLexer(input);
lexer.RemoveErrorListeners();
var tokens = new CommonTokenStream(lexer);
var parser = new LGFileParser(tokens);
parser.RemoveErrorListeners();
var listener = new ErrorListener(id);
parser.AddErrorListener(listener);
parser.BuildParseTree = true;
return(parser.file());
}