CS_CodeGen.jrag

import java.io.*;
import java.util.*;

aspect CS_CodeGenEnv {

  // Environment wrapper for CS-code generation
  // handles indentation, file writing, 

  public class CS_env {

    public final int version;
    public final String verStr;
    private int indent;
    private int depth;
    private CS_printer printer;
    private HashMap unique = new HashMap();

    final private static class CS_printer {
      
      private boolean newline = true;
      private File file;
      private PrintStream out;
      private IOException exception;
      

      public CS_printer(File f) {
  	file = f;
        File parentFile = f.getParentFile();
        if(parentFile != null) {
            parentFile.mkdirs();
        }
      }

     public CS_printer(PrintStream out) {
        this.out = out;
      }

      public void close() throws IOException {
	if (out != null) {
  	  out.close();
        }
	if (exception != null) {
	  throw exception;
        }
      }

      public PrintStream getPrintStream() {
	return(out);
      }

      public void checkOpen() {
	if (out == null && exception == null) {
          try {
    	    out = new PrintStream(new FileOutputStream(file));
          } catch (IOException e) {
	    exception = e;
          }
        }
      }

      public void print(CS_env env, String s) {
	checkOpen();
        if (newline) {
          newline = false;
          for (int i = 0 ; i < env.indent ; i++) {
            out.print("  ");
          }
        }
        out.print(s);
      }