Nice/testsuite helpers.nice,NONE,1.1

Update of /cvsroot/nice/Nice/testsuite
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv24733/testsuite

Added Files:
	helpers.nice 
Log Message:
Embedded DSL to write testcases as nice programs calling the compiler.


--- NEW FILE: helpers.nice ---
/**************************************************************************/
/*                                N I C E                                 */
/*             A high-level object-oriented research language             */
/*                        (c) Daniel Bonniot 2005                         */
/*                                                                        */
/*  This program is free software; you can redistribute it and/or modify  */
/*  it under the terms of the GNU General Public License as published by  */
/*  the Free Software Foundation; either version 2 of the License, or     */
/*  (at your option) any later version.                                   */
/*                                                                        */
/**************************************************************************/

/**
   Helper methods for the testsuite Embedded-DSL.

   The tests are written as nice programs with _test methods.
   The test methods exercise some aspect of compilation by calling the compiler
   on certain input, with certain arguments, and in a certain order.
   These helper methods provide a convenient way to make those calls to the
   compiler.

   @author Daniel Bonniot ([email protected])
 */

import nice.tools.compiler.console;
import nice.tools.compiler;
import bossa.modules;

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

let File tmp = new File("temp-testcase");

void compile
  (String pkg,
   ?String toplevel,
   ?String imp = null,
   ?String main = null,
   ?String check = null)
{
  let dirname = pkg.replace('.', File.separatorChar);
  let dir = new File(tmp, dirname);
  dir.mkdirs();
  writeProgram(new File(dir, "main.nice"), imp, toplevel, main, check);

  let output = consoleOutput();

  let compilation = new bossa.modules.Compilation
    (listener: output, parser: new bossa.parser.JavaccParser());
  compilation.sourcePath = tmp.getPath();
  if (imp != null)
    compilation.packagePath = new File(tmp, imp + ".jar").toString();
  compilation.runtimeFile = "share/java/nice.jar";
  compilation.output = new File(tmp, pkg + ".jar").toString();

  compile(compilation, pkg);

  assert output.errorCount == 0;
}

private void writeProgram
  (File to, ?String imp, ?String toplevel, ?String main, ?String check)
{
  using(let w = new BufferedWriter(new FileWriter(to))) {

    if (imp != null)
      w.write("import "imp";");

    if (toplevel != null)
      w.write(toplevel);

    if (main != null || check != null)
      {
	w.write("public void main(String[] args) {\n");
	if (main != null)
	  w.write(main);
	if (check != null)
	  w.write("\nassert "check";");
	w.write("\n}\n");
      }

  }
}

void run(String jar)
{
  run(new java.io.File(tmp, jar + ".jar"));
}

void run(java.io.File jar)
{
  let jarFile = new JarFile(jar);
  let mainClassName =
    jarFile.getManifest().getMainAttributes().getValue("Main-Class");
  let loader = new java.net.URLClassLoader
    ([jar.toURL(), new java.io.File("share/java/nice.jar").toURL()]);
  nice.tools.util.JDK.setDefaultAssertionStatus(loader, true);
  let mainClass = loader.loadClass(mainClassName);
  let main = mainClass.getMethod("main", [String[].class]);
  main.invoke(null, [cast(null)]);
}



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