source: branches/0.20.x/abcl/src/org/armedbear/lisp/scripting/AbclScriptEngineFactory.java

/*
 * AbclScriptEngineFactory.java
 *
 * Copyright (C) 2008 Alessio Stalla
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package org.armedbear.lisp.scripting;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;

public class AbclScriptEngineFactory implements ScriptEngineFactory {

    private static final AbclScriptEngine THE_ONLY_ONE_ENGINE = new AbclScriptEngine();
  
  @Override
  public String getEngineName() {
    return "ABCL Script";
  }

  @Override
  public String getEngineVersion() {
    return "0.1";
  }

  @Override
  public List<String> getExtensions() {
    List<String> extensions = new ArrayList<String>(1);
    extensions.add("lisp");
    return Collections.unmodifiableList(extensions);
  }

  @Override
  public String getLanguageName() {
    return "ANSI Common Lisp";
  }

  @Override
  public String getLanguageVersion() {
    return "ANSI X3.226:1994";
  }

  public static String escape(String raw) {
    StringBuilder sb = new StringBuilder();
    int len = raw.length();
    char c;
    for(int i = 0; i < len; ++i) {
      c = raw.charAt(i);
      if(c != '"') {
        sb.append(c);
      } else {
        sb.append("\\\"");
      }
    }
    return sb.toString();
  }
  
  @Override
  public String getMethodCallSyntax(String obj, String method, String... args) {
    StringBuilder sb = new StringBuilder();
    sb.append("(jcall \"");
    sb.append(method);
    sb.append("\" ");
    sb.append(obj);
    for(String arg : args) {
      sb.append(" ");
      sb.append(arg);
    }
    sb.append(")");
    return sb.toString();
  }

  @Override
  public List<String> getMimeTypes() {
      return Collections.unmodifiableList(new ArrayList<String>());
  }

  @Override
  public List<String> getNames() {
    List<String> names = new ArrayList<String>(1);
    names.add("ABCL");
    names.add("cl");
    names.add("Lisp");
    names.add("Common Lisp");
    return Collections.unmodifiableList(names);
  }

  @Override
  public String getOutputStatement(String str) {
    return "(cl:print \"" + str + "\")";
  }

  @Override
  public Object getParameter(String key) {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public String getProgram(String... statements) {
    StringBuilder sb = new StringBuilder();
    sb.append("(cl:progn");
    for(String stmt : statements) {
      sb.append("\n\t");
      sb.append(stmt);
    }
    sb.append(")");
    return sb.toString();
  }

  @Override
  public ScriptEngine getScriptEngine() {
    return THE_ONLY_ONE_ENGINE;
  }

}