Package org.eclipse.jdt.internal.compiler.impl

Examples of org.eclipse.jdt.internal.compiler.impl.Constant

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   * Returns <code>true</code> if JDT optimized the condition to
   * <code>true</code>.
   */
  private static boolean isOptimizedTrue(Expression condition) {
    if (condition != null) {
      Constant cst = condition.optimizedBooleanConstant();
      if (cst != Constant.NotAConstant) {
        if (cst.booleanValue() == true) {
          return true;
        }
      }
    }
    return false;
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      /*
       * Rely on JDT's computed constant value to deal with an
       * AnnotationElementValue expression whose resolved type is a primitive or
       * a string.
       */
      Constant constant = elementValueExpression.constant;
      int expectedTypeId = expectedElementValueType.id;

      if (expectedElementValueType.isArrayType()) {
        /*
         * This can happen when an element value is an array with a single
         * element. In this case JLS 3.0 section 9.7 allows for the
         * ArrayInitializer expression to be implicit. Since, element values can
         * only be single dimensional arrays, we take the leaf type of the
         * expected array type as our resultant element value type.
         */
        assert (!elementValueExpression.resolvedType.isArrayType() && expectedElementValueType.dimensions() == 1);

        expectedTypeId = expectedElementValueType.leafComponentType().id;
      }

      if (elementValueExpression.resolvedType.id != expectedTypeId) {
        /*
         * Narrowing and widening conversions are handled by the following
         * Constant.castTo call. JDT wants the upper four bits of this mask to
         * be the target type id and the lower four bits to be the source type
         * id. See Constant.castTo for more details.
         */
        constant = constant.castTo((expectedTypeId << 4)
            + elementValueExpression.resolvedType.id);
      }

      elementValue = getConstantValue(constant);
    } else if (elementValueExpression instanceof ClassLiteralAccess) {
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   * Returns <code>true</code> if JDT optimized the condition to
   * <code>false</code>.
   */
  private static boolean isOptimizedFalse(Expression condition) {
    if (condition != null) {
      Constant cst = condition.optimizedBooleanConstant();
      if (cst != Constant.NotAConstant) {
        if (cst.booleanValue() == false) {
          return true;
        }
      }
    }
    return false;
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   * Returns <code>true</code> if JDT optimized the condition to
   * <code>true</code>.
   */
  private static boolean isOptimizedTrue(Expression condition) {
    if (condition != null) {
      Constant cst = condition.optimizedBooleanConstant();
      if (cst != Constant.NotAConstant) {
        if (cst.booleanValue()) {
          return true;
        }
      }
    }
    return false;
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   * Returns <code>true</code> if JDT optimized the condition to
   * <code>false</code>.
   */
  private static boolean isOptimizedFalse(Expression condition) {
    if (condition != null) {
      Constant cst = condition.optimizedBooleanConstant();
      if (cst != Constant.NotAConstant) {
        if (cst.booleanValue() == false) {
          return true;
        }
      }
    }
    return false;
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   * Returns <code>true</code> if JDT optimized the condition to
   * <code>true</code>.
   */
  private static boolean isOptimizedTrue(Expression condition) {
    if (condition != null) {
      Constant cst = condition.optimizedBooleanConstant();
      if (cst != Constant.NotAConstant) {
        if (cst.booleanValue()) {
          return true;
        }
      }
    }
    return false;
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   */
  Object resolveConstantExpressionValue(Expression expression) {
    org.eclipse.jdt.internal.compiler.ast.ASTNode node = (org.eclipse.jdt.internal.compiler.ast.ASTNode) this.newAstToOldAst.get(expression);
    if (node instanceof org.eclipse.jdt.internal.compiler.ast.Expression) {
      org.eclipse.jdt.internal.compiler.ast.Expression compilerExpression = (org.eclipse.jdt.internal.compiler.ast.Expression) node;
      Constant constant = compilerExpression.constant;
      if (constant != null && constant != Constant.NotAConstant) {
        switch (constant.typeID()) {
          case TypeIds.T_int : return new Integer(constant.intValue());
          case TypeIds.T_byte : return new Byte(constant.byteValue());
          case TypeIds.T_short : return new Short(constant.shortValue());
          case TypeIds.T_char : return new Character(constant.charValue());
          case TypeIds.T_float : return new Float(constant.floatValue());
          case TypeIds.T_double : return new Double(constant.doubleValue());
          case TypeIds.T_boolean : return constant.booleanValue() ? Boolean.TRUE : Boolean.FALSE;
          case TypeIds.T_long : return new Long(constant.longValue());
          case TypeIds.T_JavaLangString : return constant.stringValue();
        }
        return null;
      }
    }
    return null;
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  /* (non-Javadoc)
   * @see IVariableBinding#getConstantValue()
   * @since 3.0
   */
  public Object getConstantValue() {
    Constant c = this.binding.constant();
    if (c == null || c == Constant.NotAConstant) return null;
    switch (c.typeID()) {
      case TypeIds.T_boolean:
        return Boolean.valueOf(c.booleanValue());
      case TypeIds.T_byte:
        return new Byte(c.byteValue());
      case TypeIds.T_char:
        return new Character(c.charValue());
      case TypeIds.T_double:
        return new Double(c.doubleValue());
      case TypeIds.T_float:
        return new Float(c.floatValue());
      case TypeIds.T_int:
        return new Integer(c.intValue());
      case TypeIds.T_long:
        return new Long(c.longValue());
      case TypeIds.T_short:
        return new Short(c.shortValue());
      case TypeIds.T_JavaLangString:
        return c.stringValue();
    }
    return null;
  }
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  private int addFieldAttributes(FieldBinding fieldBinding, int fieldAttributeOffset) {
    int attributesNumber = 0;
    // 4.7.2 only static constant fields get a ConstantAttribute
    // Generate the constantValueAttribute
    Constant fieldConstant = fieldBinding.constant();
    if (fieldConstant != Constant.NotAConstant){
      attributesNumber += generateConstantValueAttribute(fieldConstant, fieldBinding, fieldAttributeOffset);
    }
    if (this.targetJDK < ClassFileConstants.JDK1_5 && fieldBinding.isSynthetic()) {
      attributesNumber += generateSyntheticAttribute();
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  }
  private void generateElementValue(
      Expression defaultValue,
      TypeBinding memberValuePairReturnType,
      int attributeOffset) {
    Constant constant = defaultValue.constant;
    TypeBinding defaultValueBinding = defaultValue.resolvedType;
    if (defaultValueBinding == null) {
      this.contentsOffset = attributeOffset;
    } else {
      if (defaultValueBinding.isMemberType()) {
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