package minijava.minijava2piglet;

import minijava.MiniJavaParser;
import minijava.ParseException;
import minijava.TokenMgrError;
import minijava.symboltable.MClasses;
import minijava.syntaxtree.Node;
import minijava.typecheck.PrintError;
import minijava.visitor.BuildSymbolTableVisitor;
import minijava.visitor.GJDepthFirst;
import minijava.visitor.GenPigletVisitor;


public class Main { 
 
    public static void main(String[] args) {
    	try {
			new MiniJavaParser(System.in);
			Node root = MiniJavaParser.Goal();

			// 初始化符号表中最大的类
			MClasses my_classes = new MClasses();

			// 遍历抽象语法树，建立符号表，检查是否重复定义
			root.accept(new BuildSymbolTableVisitor(), my_classes);
			
			// 建立类的继承关系，寻找循环继承
			my_classes.buildClassRelation();
			
    		/*
    		 * TODO: Implement your own Visitors and other classes.
    		 * 
    		 */
    		GJDepthFirst v = new GenPigletVisitor();
    		root.accept(v, my_classes);
    	}
    	catch(TokenMgrError e){
    		//Handle Lexical Errors
    		e.printStackTrace();
    	}
    	catch (ParseException e){
    		//Handle Grammar Errors
    		e.printStackTrace();
    	}
    	catch(Exception e){
    		e.printStackTrace();
    	}
    	
    }
}