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using System;
using FileInfo = System.IO.FileInfo;
using Directory = System.IO.Directory;
using FileStream = System.IO.FileStream;
using FileMode = System.IO.FileMode;
using FileAccess = System.IO.FileAccess;
using Stream = System.IO.Stream;
using StreamReader = System.IO.StreamReader;
using BaseAST = antlr.BaseAST;
using CommonAST = antlr.CommonAST;
using ASTFactory = antlr.ASTFactory;
using RecognitionException = antlr.RecognitionException;
using AST = antlr.collections.AST;
using ASTFrame = antlr.debug.misc.ASTFrame;
class AppMain
{
internal static bool showTree = false;
public static void Main(string[] args)
{
// Use a try/catch block for parser exceptions
try
{
// if we have at least one command-line argument
if (args.Length > 0)
{
Console.Error.WriteLine("Parsing...");
// for each directory/file specified on the command line
for (int i = 0; i < args.Length; i++)
{
if (args[i].Equals("-showtree"))
{
showTree = true;
}
else
{
doFile(new FileInfo(args[i])); // parse it
}
}
}
else
Console.Error.WriteLine("Usage: java Main [-showtree] " + "<directory or file name>");
}
catch (System.Exception e)
{
Console.Error.WriteLine("exception: " + e);
Console.Error.WriteLine(e.StackTrace); // so we can get stack trace
}
}
// This method decides what action to take based on the type of
// file we are looking at
public static void doFile(FileInfo f)
{
// If this is a directory, walk each file/dir in that directory
if (Directory.Exists(f.FullName))
{
string[] files = Directory.GetFileSystemEntries(f.FullName);
for (int i = 0; i < files.Length; i++)
doFile(new FileInfo(f.FullName + "\\" + files[i]));
}
else if ((f.Name.Length > 5) && f.Name.Substring(f.Name.Length - 5).Equals(".java"))
{
Console.Error.WriteLine(" " + f.FullName);
parseFile(f.Name, new FileStream(f.FullName, FileMode.Open, FileAccess.Read));
}
}
// Here's where we do the real work...
public static void parseFile(string f, Stream s)
{
try
{
// Create a scanner that reads from the input stream passed to us
JavaLexer lexer = new JavaLexer(new StreamReader(s));
lexer.setFilename(f);
// Create a parser that reads from the scanner
JavaRecognizer parser = new JavaRecognizer(lexer);
parser.setFilename(f);
// start parsing at the compilationUnit rule
parser.compilationUnit();
// do something with the tree
doTreeAction(f, parser.getAST(), parser.getTokenNames());
}
catch (System.Exception e)
{
Console.Error.WriteLine("parser exception: " + e);
Console.Error.WriteLine(e.StackTrace); // so we can get stack trace
}
}
public static void doTreeAction(string f, AST t, string[] tokenNames)
{
if (t == null)
return ;
if (showTree)
{
BaseAST.setVerboseStringConversion(true, tokenNames);
ASTFactory factory = new ASTFactory();
AST r = factory.create(0, "AST ROOT");
r.setFirstChild(t);
ASTFrame frame = new ASTFrame("Java AST", r);
frame.ShowDialog();
//frame.Visible = true;
// System.out.println(t.toStringList());
}
JavaTreeParser tparse = new JavaTreeParser();
try
{
tparse.compilationUnit(t);
// System.out.println("successful walk of result AST for "+f);
}
catch (RecognitionException e)
{
Console.Error.WriteLine(e.Message);
Console.Error.WriteLine(e.StackTrace);
}
}
}
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