private CppParser BuildParser(string sourceCode)
{
// Parse the file
var inputStream = new AntlrInputStream(sourceCode);
var lexer = new CppLexer(inputStream);
var tokenStream = new CommonTokenStream(lexer);
var parser = new CppParser(tokenStream);
// Setup error handling
lexer.RemoveErrorListeners();
lexer.AddErrorListener(new LexerExceptionErrorListener());
parser.RemoveErrorListeners();
parser.AddErrorListener(new ParserExceptionErrorListener());
return(parser);
}
private void RunTest(string sourceCode, int expectedToken)
{
// Parse the file
var inputStream = new AntlrInputStream(sourceCode);
var lexer = new CppLexer(inputStream);
// Setup error handling
lexer.RemoveErrorListeners();
lexer.AddErrorListener(new LexerExceptionErrorListener());
// Match all tokens
var tokens = lexer.GetAllTokens();
// Verify we got the single expected token
Assert.Equal(1, tokens.Count);
Assert.Equal(expectedToken, tokens[0].Type);
}
public static TranslationUnit GenerateAST(AntlrInputStream inputStream)
{
// Parse the file
var lexer = new CppLexer(inputStream);
var tokenStream = new CommonTokenStream(lexer);
var parser = new CppParser(tokenStream);
// var tokens = lexer.GetAllTokens().Select(token => lexer.Vocabulary.GetSymbolicName(token.Type)).ToList();
// Setup error handling
lexer.RemoveErrorListeners();
lexer.AddErrorListener(new LexerExceptionErrorListener());
parser.RemoveErrorListeners();
parser.AddErrorListener(new ParserExceptionErrorListener());
// Parse the concrete syntax tree
var translationUnit = parser.translationUnit();
// Convert the the abstract syntax tree
var visitor = new ASTVisitor();
var ast = (TranslationUnit)visitor.Visit(translationUnit);
return(ast);
}
