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// Helper for HW2/CS453.
import java.io.*;
import visitor.*;
import syntaxtree.*;
import java.util.*;
// Files are stored in the minijava directory/package.
import minijava.*;
public class Typecheck {
public static void main(String[] args) {
Node root = null;
try {
root = new MiniJavaParser(System.in).Goal();
// Pretty-print the tree. PPrinter inherits from
// GJDepthFirst<R,A>. R=Void, A=String.
PPrinter<Void,String> pp = new PPrinter<Void,String>();
root.accept(pp, "");
// // Build the symbol table. Top-down visitor, inherits from
// // GJDepthFirst<R,A>. R=Void, A=Integer.
// SymTableVis<Void, Integer> pv =
// new SymTableVis<Void,Integer>();
// root.accept(pv, 0);
// HashMap<String, String> symt = pv.symt;
// Do type checking. Bottom-up visitor, also inherits from
// GJDepthFirst. Visit functions return MyTpe (=R), and
// take a symbol table (HashMap<String,String>) as
// argument (=A). You may implement things differently of
// course!
TypeCheckSimp ts = new TypeCheckSimp();
TypeInstance res = root.accept(ts, null);
// Ugly code not to be inspired from: "my" way of storing
// type info / typecheck property: if some of my internal
// structure is empty, then things don't typecheck for
// me. This is specific to my own implementation.
// if (res != null && res.type_array.size() > 0)
if (res.get_type() != TypeEnum.ERROR)
System.out.println("Program type checked successfully");
else
System.out.println("Type error");
}
catch (ParseException e) {
System.out.println(e.toString());
System.exit(1);
}
}
}
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