Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package miniportugol; import miniportugol.parser.MiniPortugolLexer; import miniportugol.parser.MiniPortugolParser; import miniportugol.parser.PortugolVisitor; import org.antlr.v4.runtime.ANTLRInputStream; import org.antlr.v4.runtime.CommonTokenStream; import org.antlr.v4.runtime.tree.ParseTree; /** * * @author wellington */ public class Run { /** * @param args the command line arguments */ public static void main(String[] args) { ANTLRInputStream input = new ANTLRInputStream("2/2+2\n"); MiniPortugolLexer lexer = new MiniPortugolLexer(input); CommonTokenStream tokens = new CommonTokenStream(lexer); MiniPortugolParser parser = new MiniPortugolParser(tokens); ParseTree tree = parser.prog(); PortugolVisitor eval = new PortugolVisitor(); eval.visit(tree); } }