public static IEnumerable <ClassInfo> OuterClassInfosFromCSharpSource(
string source, string filePath)
{
try
{
var codeArray = source.ToCharArray();
var inputStream = new AntlrInputStream(codeArray, codeArray.Length);
var lexer = new CSharpLexer(inputStream);
var commonTokenStream = new CommonTokenStream(lexer);
var compilationUnitListener = new CompilationUnitListener(filePath);
var parser = new CSharpParser(commonTokenStream);
parser.RemoveErrorListeners();
parser.AddErrorListener(new ErrorListener());
parser.compilation_unit().EnterRule(compilationUnitListener);
return(compilationUnitListener.OuterClassInfos);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
return(null);
}
static void Main(string[] args)
{
using (StreamReader fileStream = new StreamReader("Program.cs"))
{
AntlrInputStream inputStream = new AntlrInputStream(fileStream);
CSharpLexer lexer = new CSharpLexer(inputStream);
CommonTokenStream commonTokenStream = new CommonTokenStream(lexer);
CSharpParser parser = new CSharpParser(commonTokenStream);
parser.RemoveErrorListeners();
parser.AddErrorListener(new ErrorListener()); // add ours
var compilationUnit = parser.compilation_unit();
}
}
static void HandleFileCs(TestListener listener, string filePath)
{
FileInfo info = new FileInfo(filePath);
if (info.Extension == ".cs")
{
AntlrFileStream stream = new AntlrFileStream(filePath);
CSharpLexer lexer = new CSharpLexer(stream);
CommonTokenStream tokens = new CommonTokenStream(lexer);
CSharpParser parser = new CSharpParser(tokens);
parser.RemoveErrorListeners();
parser.AddErrorListener(new CustomError());
CSharpParser.Compilation_unitContext startContext = parser.compilation_unit();
ParseTreeWalker walker = new ParseTreeWalker();
walker.Walk(listener, startContext);
}
}
static void Main(string[] args)
{
List <string> options = new List <string>();
List <string> arguments = new List <string>();
string ast_output_file = null;
CommandLine.Parser.Default.ParseArguments <Options>(args)
.WithParsed <Options>(o =>
{
arguments = o.CsharpFiles.ToList();
ast_output_file = o.AstOutFile;
})
.WithNotParsed(a =>
{
System.Console.Error.WriteLine(a);
});
Runtime.Redirect r = new Runtime.Redirect(ast_output_file);
foreach (var file_name in arguments)
{
var code_as_string = File.ReadAllText(file_name);
var input = new AntlrInputStream(code_as_string);
var lexer = new CSharpLexer(input);
var tokens = new CommonTokenStream(lexer);
var parser = new CSharpParser(tokens);
var listener = new ErrorListener <IToken>();
parser.AddErrorListener(listener);
CSharpParser.Compilation_unitContext tree = parser.compilation_unit();
if (listener.had_error)
{
return;
}
var sb = new StringBuilder();
var ser = new Runtime.AstHelpers();
ser.ParenthesizedAST(sb, file_name, tree, tokens);
System.Console.Error.WriteLine(sb.ToString());
}
r.Dispose();
}
static void Try(string ffn)
{
var sourceCode = System.IO.File.ReadAllText(ffn);
List <IToken> codeTokens = new List <IToken>();
List <IToken> commentTokens = new List <IToken>();
Lexer preprocessorLexer = new CSharpLexer(new AntlrInputStream(sourceCode));
// Collect all tokens with lexer (CSharpLexer.g4).
var tokens = preprocessorLexer.GetAllTokens();
var directiveTokens = new List <IToken>();
var directiveTokenSource = new ListTokenSource(directiveTokens);
var directiveTokenStream = new CommonTokenStream(directiveTokenSource, CSharpLexer.DIRECTIVE);
CSharpPreprocessorParser preprocessorParser = new CSharpPreprocessorParser(directiveTokenStream);
int index = 0;
bool compiliedTokens = true;
while (index < tokens.Count)
{
var token = tokens[index];
if (token.Type == CSharpLexer.SHARP)
{
directiveTokens.Clear();
int directiveTokenIndex = index + 1;
// Collect all preprocessor directive tokens.
while (directiveTokenIndex < tokens.Count &&
tokens[directiveTokenIndex].Type != CSharpLexer.Eof &&
tokens[directiveTokenIndex].Type != CSharpLexer.DIRECTIVE_NEW_LINE &&
tokens[directiveTokenIndex].Type != CSharpLexer.SHARP)
{
if (tokens[directiveTokenIndex].Channel == CSharpLexer.COMMENTS_CHANNEL)
{
commentTokens.Add(tokens[directiveTokenIndex]);
}
else if (tokens[directiveTokenIndex].Channel != Lexer.Hidden)
{
directiveTokens.Add(tokens[directiveTokenIndex]);
}
directiveTokenIndex++;
}
directiveTokenSource = new ListTokenSource(directiveTokens);
directiveTokenStream = new CommonTokenStream(directiveTokenSource, CSharpLexer.DIRECTIVE);
preprocessorParser.TokenStream = directiveTokenStream;
preprocessorParser.Reset();
// Parse condition in preprocessor directive (based on CSharpPreprocessorParser.g4 grammar).
CSharpPreprocessorParser.Preprocessor_directiveContext directive = preprocessorParser.preprocessor_directive();
// if true than next code is valid and not ignored.
compiliedTokens = directive.value;
var directiveStr = tokens[index + 1].Text.Trim();
if ("line".Equals(directiveStr) || "error".Equals(directiveStr) || "warning".Equals(directiveStr) || "define".Equals(directiveStr) || "endregion".Equals(directiveStr) || "endif".Equals(directiveStr) || "pragma".Equals(directiveStr))
{
compiliedTokens = true;
}
string conditionalSymbol = null;
if ("define".Equals(tokens[index + 1].Text))
{
// add to the conditional symbols
conditionalSymbol = tokens[index + 2].Text;
preprocessorParser.ConditionalSymbols.Add(conditionalSymbol);
}
if ("undef".Equals(tokens[index + 1].Text))
{
conditionalSymbol = tokens[index + 2].Text;
preprocessorParser.ConditionalSymbols.Remove(conditionalSymbol);
}
index = directiveTokenIndex - 1;
}
else if (token.Channel == CSharpLexer.COMMENTS_CHANNEL)
{
commentTokens.Add(token); // Colect comment tokens (if required).
}
else if (token.Channel != Lexer.Hidden && token.Type != CSharpLexer.DIRECTIVE_NEW_LINE && compiliedTokens)
{
codeTokens.Add(token); // Collect code tokens.
}
index++;
}
// At second stage tokens parsed in usual way.
var codeTokenSource = new ListTokenSource(codeTokens);
var codeTokenStream = new CommonTokenStream(codeTokenSource);
CSharpParser parser = new CSharpParser(codeTokenStream);
// Parse syntax tree (CSharpParser.g4)
var listener = new ErrorListener <IToken>(parser, preprocessorLexer, codeTokenStream);
parser.AddErrorListener(listener);
var tree = parser.compilation_unit();
if (listener.had_error)
{
System.Console.WriteLine("error in parse.");
}
else
{
System.Console.WriteLine("parse completed.");
}
System.Console.WriteLine(codeTokenStream.OutputTokens(preprocessorLexer));
System.Console.WriteLine(tree.OutputTree(codeTokenStream, preprocessorLexer));
}
