Examples of httl.ast.UnaryOperator

httl.ast.UnaryOperator
UnaryOperator. (SPI, Prototype, ThreadSafe) @author Liang Fei (liangfei0201 AT gmail DOT com)

  }


  private UnaryOperator createUnaryOperator(String operator, int priority, int offset) {
    String name = UNARY_OPERATOR_NAMES.get(operator);
    if (StringUtils.isNotEmpty(name)) {
      return new UnaryOperator(name, priority, offset);
    } else if (StringUtils.isFunction(operator)) {
      return new UnaryOperator(operator.substring(1), priority, offset);
    } else {
      throw new UnsupportedOperationException("Unsupported unary operator " + operator);
    }
  }

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            if ("(".equals(prev) && ("(".equals(after) || StringUtils.isNamed(after))) {
              Operator left = operatorStack.pop();
              if (left != Bracket.ROUND) {
                throw new ParseException("Miss left parenthesis", token.getOffset());
              }
              UnaryOperator operator = createUnaryOperator(msg, getPriority(msg, true), getTokenOffset(token) );
              operatorTokens.put(operator, token);
              operatorStack.push(operator);
              beforeOperator = true;
              i ++;
              continue;
            }
          }
        }
        if (i > 0) {
          String pre = tokens.get(i - 1).getMessage().trim();
          if ("is".equals(pre) || "instanceof".equals(pre)) {
            StringBuilder buf = new StringBuilder();
            buf.append("@");
            buf.append(msg);
            while (i + 1 < tokens.size() && isPackageName(tokens.get(i + 1).getMessage().trim())) {
              buf.append(tokens.get(i + 1).getMessage().trim());
              i ++;
            }
            msg = buf.toString();
          }
        }
      }
      // ================
      if (msg.length() >= 2 
          && (msg.startsWith("\"") && msg.endsWith("\"") 
          || msg.startsWith("\'") && msg.endsWith("\'") 
          || msg.startsWith("`") && msg.endsWith("`"))) {
        String value = StringUtils.unescapeString(msg.substring(1, msg.length() - 1));
        if (msg.startsWith("`") && value.length() == 1) {
          parameterStack.push(new Constant(value.charAt(0), false, token.getOffset()));
        } else if (msg.startsWith("`") && value.length() == 2 && value.charAt(0) == '\\') {
          parameterStack.push(new Constant(value.charAt(1), true, token.getOffset()));
        } else {
          parameterStack.push(new Constant(StringUtils.unescapeString(value), false, token.getOffset()));
        }
        beforeOperator = false;
      } else if (StringUtils.isNumber(msg)) {
        Object value;
        boolean boxed = false;
        if (msg.endsWith("b") || msg.endsWith("B")) {
          value = Byte.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("B");
        } else if (msg.endsWith("s") || msg.endsWith("S")) {
          value = Short.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("S");
        } else if (msg.endsWith("i") || msg.endsWith("I")) {
          value = Integer.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("I");
        } else if (msg.endsWith("l") || msg.endsWith("L")) {
          value = Long.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("L");
        } else if (msg.endsWith("f") || msg.endsWith("F")) {
          value = Float.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("F");
        } else if (msg.endsWith("d") || msg.endsWith("D")) {
          value = Double.valueOf(msg.substring(0, msg.length() - 1));
          boxed = msg.endsWith("D");
        } else if (msg.indexOf('.') >= 0) {
          value = Double.valueOf(msg);
        } else {
          value = Integer.valueOf(msg);
        }
        parameterStack.push(new Constant(value, boxed, token.getOffset()));
        beforeOperator = false;
      } else if ("null".equals(msg)) {
        parameterStack.push(new Constant(null, false, token.getOffset()));
        beforeOperator = false;
      } else if ("true".equals(msg) || "false".equals(msg)) {
        parameterStack.push(new Constant("true".equals(msg) ? Boolean.TRUE : Boolean.FALSE, false, token.getOffset()));
        beforeOperator = false;
      } else if ("TRUE".equals(msg) || "FALSE".equals(msg)) {
        parameterStack.push(new Constant("TRUE".equals(msg) ? Boolean.TRUE : Boolean.FALSE, true, token.getOffset()));
        beforeOperator = false;
      } else if (msg.length() > 1 && msg.startsWith("@")) {
        parameterStack.push(new Constant(ClassUtils.forName(importPackages, msg.substring(1).trim()), false, token.getOffset()));
        beforeOperator = false;
      } else if (StringUtils.isNamed(msg) && ! "instanceof".equals(msg)) {
        parameterStack.push(new Variable(msg, getTokenOffset(token) ));
        beforeOperator = false;
      } else if ("(".equals(msg)) {
        operatorStack.push(Bracket.ROUND);
        beforeOperator = true;
      } else if (")".equals(msg)) {
        while (popOperator(parameterStack, operatorStack, operatorTokens, offset) != Bracket.ROUND);
        beforeOperator = false;
      } else if ("]".equals(msg)) {
        while (popOperator(parameterStack, operatorStack, operatorTokens, offset) != Bracket.SQUARE);
        beforeOperator = false;
      } else if ("}".equals(msg)) {
        while (popOperator(parameterStack, operatorStack, operatorTokens, offset) != Bracket.BRACE);
        beforeOperator = false;
      } else {
        if (StringUtils.isFunction(msg)) {
          String method = msg.substring(1);
          if (forbidEqualsMethods != null ) {
            for (String forbid : forbidEqualsMethods) {
              if (method.equals(forbid)) {
                throw new ParseException("Forbid call method " + method + " by forbid.method=" + forbid + " config.", offset);
              }
            }
          }
          if (forbidStartsMethods != null ) {
            for (String forbid : forbidStartsMethods) {
              if (method.startsWith(forbid)) {
                throw new ParseException("Forbid call method " + method + " by forbid.method=" + forbid + "* config.", offset);
              }
            }
          }
          if (forbidEndsMethods != null ) {
            for (String forbid : forbidEndsMethods) {
              if (method.endsWith(forbid)) {
                throw new ParseException("Forbid call method " + method + " by forbid.method=*" + forbid + " config.", offset);
              }
            }
          }
        }
        
        if (beforeOperator) {
          if (! msg.startsWith("new ") && ! StringUtils.isFunction(msg) && ! UNARY_OPERATORS.contains(msg)) {
            throw new ParseException("Unsupported binary operator " + msg, getTokenOffset(token) );
          }
          UnaryOperator operator = createUnaryOperator(msg, getPriority(msg, true), getTokenOffset(token));
          operatorTokens.put(operator, token);
          operatorStack.push(operator);
        } else {
          if (! StringUtils.isFunction(msg) && ! BINARY_OPERATORS.contains(msg)) {
            throw new ParseException("Unsupported binary operator " + msg, getTokenOffset(token) );
          }
          BinaryOperator operator = createBinaryOperator(msg, getPriority(msg, false), getTokenOffset(token));
          operatorTokens.put(operator, token);
          while (! operatorStack.isEmpty() && ! (operatorStack.peek() instanceof Bracket)
              && operatorStack.peek().getPriority() >= operator.getPriority()) {
            popOperator(parameterStack, operatorStack, operatorTokens, offset);
          }
          operatorStack.push(operator);
        }
        if ("[".equals(msg)) {

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        throw new ParseException("Binary operator " + binaryOperator.getName() + " miss parameter", token == null ? offset : getTokenOffset(token));
      binaryOperator.setLeftParameter(parameterStack.pop());
      parameterStack.push(operator);
    } else if (operator instanceof UnaryOperator) {
      Token token = operatorTokens.get(operator);
      UnaryOperator unaryOperator = (UnaryOperator) operator;
      if (parameterStack.isEmpty())
        throw new ParseException("Unary operator " + unaryOperator.getName() + "miss parameter", token == null ? offset : getTokenOffset(token));
      unaryOperator.setParameter(parameterStack.pop());
      parameterStack.push(operator);
    }
    return operator;
  }

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Related Classes of httl.ast.UnaryOperator

httl.spi.parsers.ExpressionParser

java.text.ParseException

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