private void Fun(string pat, string ast_string)
{
var ast_stream = CharStreams.fromstring(ast_string);
var ast_lexer = new AstLexer(ast_stream);
var ast_tokens = new CommonTokenStream(ast_lexer);
var ast_parser = new AstParserParser(ast_tokens);
ast_parser.BuildParseTree = true;
var listener = new ErrorListener <IToken>();
ast_parser.AddErrorListener(listener);
IParseTree ast_tree = ast_parser.ast();
if (listener.had_error)
{
throw new Exception();
}
_ast = ast_tree;
var lexer = new AstLexer(null);
var parser = new AstParserParser(new CommonTokenStream(lexer));
ParseTreePatternMatcher ptpm = new ParseTreePatternMatcher(lexer, parser);
var re = ptpm.Compile(pat, AstParserParser.RULE_node);
var c = ast_tree.GetChild(0);
var b = re.Matches(c);
System.Console.WriteLine(b);
}
/// <summary>
/// The same as
/// <see cref="CompileParseTreePattern(string, int)"/>
/// but specify a
/// <see cref="Lexer"/>
/// rather than trying to deduce it from this parser.
/// </summary>
public virtual ParseTreePattern CompileParseTreePattern(string pattern, int patternRuleIndex, Lexer lexer)
{
ParseTreePatternMatcher m = new ParseTreePatternMatcher(lexer, this);
return(m.Compile(pattern, patternRuleIndex));
}
