main.java

Java写的词法/语法分析器。可生成JAVA语言或者是C++的词法和语法分析器。并可产生语法分析树和对该树进行遍历

import java.io.*;
import antlr.DumpASTVisitor;

class Main {
	public static void main(String[] args) {
		try {
			LangLexer lexer = new LangLexer(new DataInputStream(System.in));
			LangParser parser = new LangParser(lexer);
			parser.block();
			antlr.CommonAST a = (antlr.CommonAST)parser.getAST();
			System.out.println(a.toStringList());
			LangWalker walker = new LangWalker();
			walker.block(a);	// walk tree
			System.out.println("done walking");
		} catch(Exception e) {
			System.err.println("exception: "+e);
		}
	}
}