jspnode.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 1,836 行 · 第 1/4 页

	if (boolean.class.equals(type))
	  return expr.evalBoolean(null) ? "true" : "false";
	else if (Boolean.class.equals(type))
	  return expr.evalBoolean(null) ? "java.lang.Boolean.TRUE" : "java.lang.Boolean.FALSE";
	else if (byte.class.equals(type))
	  return "(byte) " + expr.evalLong(null);
	else if (Byte.class.equals(type))
	  return "new java.lang.Byte((byte) " + expr.evalLong(null) + "L)";
	else if (short.class.equals(type))
	  return "(short) " + expr.evalLong(null);
	else if (Short.class.equals(type))
	  return "new java.lang.Short((short) " + expr.evalLong(null) + "L)";
	else if (int.class.equals(type))
	  return "(int) " + expr.evalLong(null);
	else if (Integer.class.equals(type))
	  return "new java.lang.Integer((int) " + expr.evalLong(null) + "L)";
	else if (long.class.equals(type))
	  return "" + expr.evalLong(null) + "L";
	else if (Long.class.equals(type))
	  return "new java.lang.Long(" + expr.evalLong(null) + "L)";
	else if (float.class.equals(type))
	  return "(float) " + expr.evalDouble(null);
	else if (Float.class.equals(type))
	  return "new java.lang.Float((float) " + expr.evalDouble(null) + ")";
	else if (double.class.equals(type)) {
	  double v = expr.evalDouble(null);

	  if (Double.isNaN(v))
	    return "Double.NaN";
	  else
	    return "" + v;
	}
	else if (Double.class.equals(type)) {
	  double v = expr.evalDouble(null);

	  if (Double.isNaN(v))
	    return "new Double(Double.NaN)";
	  else
	    return "new java.lang.Double(" + v + ")";
	}
	else if (char.class.equals(type))
	  return "((char) " + (int) expr.evalCharacter(null) + ")";
	else if (Character.class.equals(type)) {
	  // jsp/18s0
	  return "new Character((char) " + (int) expr.evalCharacter(null) + ")";
	}
	else if (String.class.equals(type))
	  return "\"" + escapeJavaString(expr.evalString(null)) + "\"";
	else if (BigInteger.class.equals(type)) {
	  String v = expr.evalBigInteger(null).toString();

	  // 18s3
	  if (v.equals("") || v.equals("0"))
	    return "java.math.BigInteger.ZERO";
	  else
	    return "new java.math.BigInteger(\"" + v + "\")";
	}
	else if (BigDecimal.class.equals(type)) {
	  String v = expr.evalBigDecimal(null).toString();

	  // 18s4
	  if (v.equals("") || v.equals("0.0"))
	    return "java.math.BigDecimal.ZERO";
	  else
	    return "new java.math.BigDecimal(\"" + v + "\")";
	}
	else if (Object.class.equals(type)) {
	  Object cValue = expr.evalObject(null);

	  String result = generateObject(cValue);

	  if (result != null)
	    return result;
	}
	else {
	  Object cValue = expr.evalObject(null);

	  // jsp/184t
	  if ("".equals(cValue))
	    return "null";
	}
      } catch (Throwable e) {
	// jsp/18co
	// exceptions are caught at runtime
	log.log(Level.FINER, e.toString(), e);
	
	log.fine(e.getMessage());
      }
    }
    
    int exprIndex = _gen.addExpr(value);
    String var = "_caucho_expr_" + exprIndex;

    if (boolean.class.equals(type))
      return var + ".evalBoolean(_jsp_env)";
    else if (Boolean.class.equals(type))
      return var + ".evalBoolean(_jsp_env) ? java.lang.Boolean.TRUE : java.lang.Boolean.FALSE";
    else if (byte.class.equals(type))
      return "(byte) " + var + ".evalLong(_jsp_env)";
    else if (Byte.class.equals(type))
      return "new java.lang.Byte((byte) " + var + ".evalLong(_jsp_env))";
    else if (short.class.equals(type))
      return "(short) " + var + ".evalLong(_jsp_env)";
    else if (Short.class.equals(type))
      return "new java.lang.Short((short) " + var + ".evalLong(_jsp_env))";
    else if (int.class.equals(type))
      return "(int) " + var + ".evalLong(_jsp_env)";
    else if (Integer.class.equals(type))
      return "new java.lang.Integer((int) " + var + ".evalLong(_jsp_env))";
    else if (long.class.equals(type))
      return var + ".evalLong(_jsp_env)";
    else if (Long.class.equals(type))
      return "new java.lang.Long(" + var + ".evalLong(_jsp_env))";
    else if (float.class.equals(type))
      return "(float) " + var + ".evalDouble(_jsp_env)";
    else if (Float.class.equals(type))
      return "new java.lang.Float((float) " + var + ".evalDouble(_jsp_env))";
    else if (double.class.equals(type))
      return var + ".evalDouble(_jsp_env)";
    else if (Double.class.equals(type))
      return "new java.lang.Double(" + var + ".evalDouble(_jsp_env))";
    else if (java.math.BigDecimal.class.equals(type))
      return "" + var + ".evalBigDecimal(_jsp_env)";
    else if (java.math.BigInteger.class.equals(type))
      return "" + var + ".evalBigInteger(_jsp_env)";
    else if (char.class.equals(type))
      return var + ".evalCharacter(_jsp_env)";
    else if (Character.class.equals(type))
      return "new Character(" + var + ".evalCharacter(_jsp_env))";
    else if (String.class.equals(type))
      return var + ".evalString(_jsp_env)";
    else if (BigInteger.class.equals(type))
      return var + ".evalBigInteger(_jsp_env)";
    else if (BigDecimal.class.equals(type))
      return var + ".evalBigDecimal(_jsp_env)";
    else if (Object.class.equals(type))
      return var + ".evalObject(_jsp_env)";
    else {
      return "(" + classToString(type) + ") " + var + ".evalObject(_jsp_env)";
    }
  }

  public void convertParameterValue(JspJavaWriter out, String type, String value)
    throws IOException
  {
    if (type.equals("boolean"))
      out.print("java.lang.Boolean.TRUE.equals(" + value + ")");
    else if (type.equals("byte"))
      out.print("java.lang.Byte.valueOf(" + value + ")");
    else if (type.equals("char"))
      out.print("java.lang.Character.valueOf(" + value + ")");
    else if (type.equals("short"))
      out.print("java.lang.Short.valueOf(" + value + ")");
    else if (type.equals("int"))
      out.print("((java.lang.Integer) " + value + ").intValue()");
    else if (type.equals("long"))
      out.print("((java.lang.Long) " + value + ").longValue()");
    else if (type.equals("float"))
      out.print("((java.lang.Float) " + value + ").floatValue()");
    else if (type.equals("double"))
      out.print("((java.lang.Double) " + value + ").doubleValue()");
    else
      out.print("(" + type + ")" + value);
  }

  protected String classToString(Class cl)
  {
    if (cl.isArray())
      return classToString(cl.getComponentType()) + "[]";
    else
      return cl.getName();
  }

  /**
   * Returns true if the value is a runtime attribute.
   */
  public boolean hasRuntimeAttribute(String value)
    throws JspParseException
  {
    if (_parseState.isScriptingInvalid()) {
      // && value.indexOf("<%=") >= 0) {
      return false;
      /*
      throw error(L.l("Runtime expressions are forbidden here.  Scripting has been disabled either:\n1) disabled by the web.xml scripting-invalid\n2) disabled in a tag's descriptor\n3) forbidden in <jsp:attribute> or <jsp:body> tags."));
      */
    }
        
    if (value.startsWith("<%=") && value.endsWith("%>"))
      return true;
    else if (value.startsWith("%=") && value.endsWith("%"))
      return true;
    else if (value.indexOf("<%=") >= 0 &&
             value.indexOf("<%=") < value.indexOf("%>"))
      throw error(L.l("interpolated runtime values are forbidden by the JSP spec at '{0}'",
                      value));
    else
      return false;
  }

  /**
   * Returns true if the string has scripting.
   */
  public boolean hasScripting(String value)
  {
    try {
      return value != null && hasRuntimeAttribute(value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  /**
   * Returns true if the string has scripting.
   */
  public boolean hasScripting(JspAttribute value)
  {
    return value != null && value.hasScripting();
  }
  
  /**
   * Returns true if the value is a runtime attribute.
   */
  public boolean hasELAttribute(String value)
  {
    return ! _parseState.isELIgnored() && value.indexOf("${") >= 0;
  }
  
  /**
   * Returns true if the value is a runtime attribute.
   */
  public boolean hasDeferredAttribute(String value)
  {
    if (value.indexOf("#{") < 0)
      return false;
    else if (isPre21Taglib())
      return false;
    else
      return ! _parseState.isELIgnored();
  }
  
  /**
   * Returns true if the value is a runtime attribute.
   */
  public boolean hasELAttribute(String value, boolean isELIgnored)
  {
    return ! isELIgnored && value.indexOf("${") >= 0;
  }
  
  /**
   * Returns true if the value is a runtime attribute.
   */
  public boolean hasDeferredAttribute(String value, boolean isELIgnored)
  {
    if (isELIgnored)
      return false;
    else if (value.indexOf("#{") < 0)
      return false;
    else if (isPre21Taglib())
      return false;
    else
      return true;
  }

  /**
   * Returns the runtime attribute of the value.
   */
  public String getRuntimeAttribute(String value)
    throws Exception
  {
    if (value.startsWith("<%=") && value.endsWith("%>"))
      return value.substring(3, value.length() - 2);
    else if (value.startsWith("%=") && value.endsWith("%"))
      return value.substring(2, value.length() - 1);
    else
      return value;
  }

  /**
   * Converts a string-valued expression to the given type.
   */
  String stringToValue(Class type, String obj)
  {
    if (boolean.class.equals(type))
      return "com.caucho.jsp.PageContextImpl.toBoolean(" + obj + ")";
    else if (Boolean.class.equals(type))
      return "java.lang.Boolean.valueOf(" + obj + ")";
    else if (byte.class.equals(type))
      return "java.lang.Byte.parseByte(" + obj + ")";
    else if (Byte.class.equals(type))
      return "java.lang.Byte.valueOf(" + obj + ")";
    else if (char.class.equals(type))
      return obj + ".charAt(0)";
    else if (Character.class.equals(type))
      return "new java.lang.Character(" + obj + ".charAt(0))";
    else if (short.class.equals(type))
      return "java.lang.Short.parseShort(" + obj + ")";
    else if (Short.class.equals(type))
      return "java.lang.Short.valueOf(" + obj + ")";
    else if (int.class.equals(type))
      return "java.lang.Integer.parseInt(" + obj + ")";
    else if (Integer.class.equals(type))
      return "java.lang.Integer.valueOf(" + obj + ")";
    else if (long.class.equals(type))
      return "java.lang.Long.parseLong(" + obj + ")";
    else if (Long.class.equals(type))
      return "java.lang.Long.valueOf(" + obj + ")";
    else if (float.class.equals(type))
      return "java.lang.Float.parseFloat(" + obj + ")";
    else if (Float.class.equals(type))
      return "java.lang.Float.valueOf(" + obj + ")";
    else if (double.class.equals(type))
      return "java.lang.Double.parseDouble(" + obj + ")";
    else if (Double.class.equals(type))
      return "java.lang.Double.valueOf(" + obj + ")";
    else if (type.isAssignableFrom(String.class))
      return obj;
    else
      return null;
  }
  
  protected String generateObject(Object obj)
  {
    if (obj instanceof String)
      return "\"" + escapeJavaString((String) obj) + "\"";
    else if (obj instanceof Long)
      return "new java.lang.Long(" + obj + "L)";
    else if (obj instanceof Integer)
      return "new java.lang.Integer((int) " + obj + "L)";
    else if (obj instanceof Double) {
      double v = (Double) obj;

      if (Double.isNaN(v))
	return "new java.lang.Double(Double.NaN)";
      else
	return "new java.lang.Double(" + v + ")";
    }
    else if (obj instanceof Boolean)
      return ((Boolean) obj).booleanValue() ? "java.lang.Boolean.TRUE" : "java.lang.Boolean.FALSE";
    else
      return null;
  }
  
  public static String toELObject(String expr, Class type)
  {
    if (boolean.class.equals(type))
      return "((" + expr + ") ? Boolean.TRUE : Boolean.FALSE)";
    else if (byte.class.equals(type))
      return "new Long(" + expr + ")";
    else if (short.class.equals(type))
      return "new Long(" + expr + ")";
    else if (int.class.equals(type))
      return "new Long(" + expr + ")";
    else if (long.class.equals(type))
      return "new Long(" + expr + ")";
    else if (float.class.equals(type))
      return "new Double(" + expr + ")";
    else if (double.class.equals(type))
      return "new Double(" + expr + ")";
    else if (char.class.equals(type))
      return "String.valueOf(" + expr + ")";
    else
      return expr;
  }

  /**
   * Escapes a java string.
   */
  public static String escapeJavaString(String s)
  {
    if (s == null)
      return "";

    CharBuffer cb = CharBuffer.allocate();
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '\\')
        cb.append("\\\\");
      else if (s.charAt(i) == '"')
        cb.append("\\\"");
      else if (s.charAt(i) == '\n')
        cb.append("\\n");
      else if (s.charAt(i) == '\r')
        cb.append("\\r");
      else
        cb.append(s.charAt(i));
    }

    return cb.close();
  }

  protected Class loadClass(String type)
    throws JspParseException
  {
    if (type == null)
      return null;
    else {
      try {
        return _gen.getBeanClass(type);
      } catch (Exception e) {
        throw new JspParseException(e);
      }
    }
  }

  /**
   * Creates a parse exception with the proper line information.
   */
  protected JspParseException error(String msg)
  {
    return error(msg, null);
  }

  /**
   * Creates a parse exception with the proper line information.
   */
  protected JspParseException error(String msg, Throwable e)
  {
    if (_filename != null) {
      String lines = _gen.getSourceLines(_sourcePath, _startLine);
      
      return new JspLineParseException(_filename + ":" + _startLine + ": " + msg + lines, e);
    }
    else
      return new JspParseException(msg, e);
  }

  /**
   * Creates a parse exception with the proper line information.
   */
  protected JspParseException error(Throwable e)
  {
    if (e instanceof JspLineParseException)
      return (JspParseException) e;
    else if (_filename == null || e instanceof LineCompileException)
      return new JspLineParseException(e);

    String msg;
    
    if (e instanceof CompileException)
      msg = e.getMessage();
    else
      msg = String.valueOf(e);
    
    String lines = _gen.getSourceLines(_sourcePath, _startLine);
      
    return new JspLineParseException(_filename + ":" + _startLine + ": " + msg + lines, e);
  }

  /**
   * Returns a printable version of the node.
   */
  public String toString()
  {
    if (_name == null)
      return "<" + getClass().getName() + ">";
    else
      return "<" + _name.getName() + ">";
  }
}