1. CMPE 152: Compiler Design March 26 – April 16 Labs
Department of Computer Engineering San Jose State University Spring 2019 Instructor: Ron Mak

2. Today’s Lab: Assignment #5
Write the first draft of the ANTLR 4 grammar file for your source language.
Use the Eclipse ANTLR plugin.
Generate a syntax diagram from the grammar.
Generate a parse tree from the source program.
Generate the parser and lexer.
For the External Tool Configuration, use:
Compile a sample source program.
Due: Wednesday, April 17.
-no-listener -visitor -encoding UTF-8 -Dlanguage=Cpp

3. Starter Main Program for Assignment #5
#include <iostream>
#include <fstream>
#include "antlr4-runtime.h"
#include "PclLexer.h"
#include "PclParser.h"
#include "PclBaseVisitor.h"
using namespace std;
using namespace antlrcpp;
using namespace antlr4;
int main(int argc, const char *args[]) {
    ifstream ins;
    ins.open(args[1]);
    ANTLRInputStream input(ins);
    PclLexer lexer(&input);
    CommonTokenStream tokens(&lexer);
    PclParser parser(&tokens);
    tree::ParseTree *tree = parser.program();
    PclBaseVisitor compiler;
    compiler.visit(tree);
    return 0; }