Examples of LLambda


Examples of de.tuhrig.thofu.types.LLambda

        LList parameters = (LList) ((LList) tokens).getFirst();

        LList body = (LList) ((LList) tokens).getRest();

        return new LLambda(parameters, body, environment);
      }
    });

    // (if condition ifExpression elseExpression)
    root.put(LSymbol.get("if"), new LOperation("if") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {

        LObject condition = ((LList) tokens).get(0);

        LObject result = condition.run(environment, tokens);

        if (result.equals(LBoolean.TRUE)) {

          LObject ifExpression = ((LList) tokens).get(1);
          return ifExpression.run(environment, tokens);
        }

        else {

          LObject elseExpression = ((LList) tokens).get(2);
          return elseExpression.run(environment, tokens);
        }
      }
    });
   
    // (for (define i 0) (< i 5) (set! i (+ i 1)) (print i))
    root.put(LSymbol.get("for"), new LOperation("for") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {

        LList define = (LList) ((LList) tokens).get(0);
        LList condition = (LList) ((LList) tokens).get(1);
        LList increment = (LList) ((LList) tokens).get(2);
        LList block = (LList) ((LList) tokens).get(3);

        Environment innerEnvironment = new Environment(environment);

        define.evaluate(innerEnvironment, tokens);
       
        LObject result = LNull.NULL;
       
        while(condition.evaluate(innerEnvironment, tokens) == LBoolean.TRUE) {
         
          result = block.evaluate(innerEnvironment, tokens);
         
          increment.evaluate(innerEnvironment, tokens);
        }

        return result;
      }
    });
   
    // (while (true) (print i))
    root.put(LSymbol.get("while"), new LOperation("while") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {

        LList condition = (LList) ((LList) tokens).get(0);
        LList block = (LList) ((LList) tokens).get(1);
   
        LObject result = LNull.NULL;
       
        while(condition.evaluate(environment, tokens) == LBoolean.TRUE) {
         
          result = block.evaluate(environment, tokens);
        }

        return result;
      }
    });
   
    // (do (true) (print i))
    root.put(LSymbol.get("do"), new LOperation("do") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {

        LList condition = (LList) ((LList) tokens).get(0);
        LList block = (LList) ((LList) tokens).get(1);
   
        LObject result = LNull.NULL;
       
        do {
         
          result = block.evaluate(environment, tokens);
         
        }while(condition.evaluate(environment, tokens) == LBoolean.TRUE);

        return result;
      }
    });

    /**
     * Java functions
     */
 
    // (import "name")
    root.put(LSymbol.get("import"), new LOperation("import") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {

        LList list = (LList) tokens;

        for (LObject object: list) {
       
          String tmp = object.toString();
         
          System.out.println("import " + tmp);
         
          if(tmp.endsWith("*")) {
           
            System.out.println("package");
           
            LJava.importPackage(tmp.substring(0, tmp.length()-2));
          }
          else {
           
            System.out.println("class");
           
            LJava.importClass(tmp);
          }
        }
       
        return LBoolean.TRUE;
      }
    });
   
    // (interface Interface.class object)
    root.put(LSymbol.get("interface"), new LOperation("interface") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {
       
        LList list = (LList) tokens;
             
        LObject c = list.get(0).run(environment, tokens);
        LLambda lambda = (LLambda) list.get(1).run(environment, tokens);
       
        LJClass cl = (LJClass) c.run(environment, tokens);

        return LJava.createInterface((Class<?>) cl.getJObject(), lambda, environment);
      }
    });
   
    // (class Class.class object)
    root.put(LSymbol.get("class"), new LOperation("class") {

      @Override
      public LObject evaluate(Environment environment, LObject tokens) {
       
        LList list = (LList) tokens;
             
        LObject c = list.get(0).run(environment, tokens);
        LLambda lambda = (LLambda) list.get(1).run(environment, tokens);
       
        LJClass cl = (LJClass) c.run(environment, tokens);

        return LJava.createClass((Class<?>) cl.getJObject(), lambda, environment);
      }
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