Java IfStatement.THEN_STATEMENT_PROPERTY属性代码示例

/** {@inheritDoc} */
@Override
public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModel model)
    throws CoreException {
  ASTRewrite rewrite = cuRewrite.getASTRewrite();
  String label;
  if (fBodyProperty == IfStatement.THEN_STATEMENT_PROPERTY) {
    label = FixMessages.CodeStyleFix_ChangeIfToBlock_desription;
  } else if (fBodyProperty == IfStatement.ELSE_STATEMENT_PROPERTY) {
    label = FixMessages.CodeStyleFix_ChangeElseToBlock_description;
  } else {
    label = FixMessages.CodeStyleFix_ChangeControlToBlock_description;
  }

  TextEditGroup group = createTextEditGroup(label, cuRewrite);
  ASTNode moveTarget = rewrite.createMoveTarget(fBody);
  Block replacingBody = cuRewrite.getRoot().getAST().newBlock();
  replacingBody.statements().add(moveTarget);
  rewrite.set(fControlStatement, fBodyProperty, replacingBody, group);
}
 

private boolean needsBlockAroundDanglingIf() {
  /* see https://bugs.eclipse.org/bugs/show_bug.cgi?id=169331
   *
   * Situation:
   * boolean a, b;
   * void toInline() {
   *     if (a)
   *         hashCode();
   * }
   * void m() {
   *     if (b)
   *         toInline();
   *     else
   *         toString();
   * }
   * => needs block around inlined "if (a)..." to avoid attaching else to wrong if.
   */
  return fTargetNode.getLocationInParent() == IfStatement.THEN_STATEMENT_PROPERTY
      && fTargetNode.getParent().getStructuralProperty(IfStatement.ELSE_STATEMENT_PROPERTY)
          != null
      && fSourceProvider.isDangligIf();
}
 

private boolean needsBlockAroundDanglingIf() {
	/* see https://bugs.eclipse.org/bugs/show_bug.cgi?id=169331
	 *
	 * Situation:
	 * boolean a, b;
	 * void toInline() {
	 *     if (a)
	 *         hashCode();
	 * }
	 * void m() {
	 *     if (b)
	 *         toInline();
	 *     else
	 *         toString();
	 * }
	 * => needs block around inlined "if (a)..." to avoid attaching else to wrong if.
	 */
	return fTargetNode.getLocationInParent() == IfStatement.THEN_STATEMENT_PROPERTY
			&& fTargetNode.getParent().getStructuralProperty(IfStatement.ELSE_STATEMENT_PROPERTY) != null
			&& fSourceProvider.isDangligIf();
}
 

/**
 * {@inheritDoc}
 */
@Override
public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModel model) throws CoreException {
	ASTRewrite rewrite= cuRewrite.getASTRewrite();
	String label;
	if (fBodyProperty == IfStatement.THEN_STATEMENT_PROPERTY) {
		label = FixMessages.CodeStyleFix_ChangeIfToBlock_desription;
	} else if (fBodyProperty == IfStatement.ELSE_STATEMENT_PROPERTY) {
		label = FixMessages.CodeStyleFix_ChangeElseToBlock_description;
	} else {
		label = FixMessages.CodeStyleFix_ChangeControlToBlock_description;
	}

	TextEditGroup group= createTextEditGroup(label, cuRewrite);
	ASTNode moveTarget= rewrite.createMoveTarget(fBody);
	Block replacingBody= cuRewrite.getRoot().getAST().newBlock();
	replacingBody.statements().add(moveTarget);
	rewrite.set(fControlStatement, fBodyProperty, replacingBody, group);
}
 

/**
 * Returns true if a node at a given location is a body of a control statement. Such body nodes are
 * interesting as when replacing them, it has to be evaluates if a Block is needed instead.
 * E.g. <code> if (x) do(); -> if (x) { do1(); do2() } </code>
 *
 * @param locationInParent Location of the body node
 * @return Returns true if the location is a body node location of a control statement.
 */
public static boolean isControlStatementBody(StructuralPropertyDescriptor locationInParent) {
	return locationInParent == IfStatement.THEN_STATEMENT_PROPERTY
			|| locationInParent == IfStatement.ELSE_STATEMENT_PROPERTY
			|| locationInParent == ForStatement.BODY_PROPERTY
			|| locationInParent == EnhancedForStatement.BODY_PROPERTY
			|| locationInParent == WhileStatement.BODY_PROPERTY
			|| locationInParent == DoStatement.BODY_PROPERTY;
}
 

private void insertAt(ASTNode target, Statement declaration) {
  ASTRewrite rewrite = fCURewrite.getASTRewrite();
  TextEditGroup groupDescription =
      fCURewrite.createGroupDescription(
          RefactoringCoreMessages.ExtractTempRefactoring_declare_local_variable);

  ASTNode parent = target.getParent();
  StructuralPropertyDescriptor locationInParent = target.getLocationInParent();
  while (locationInParent != Block.STATEMENTS_PROPERTY
      && locationInParent != SwitchStatement.STATEMENTS_PROPERTY) {
    if (locationInParent == IfStatement.THEN_STATEMENT_PROPERTY
        || locationInParent == IfStatement.ELSE_STATEMENT_PROPERTY
        || locationInParent == ForStatement.BODY_PROPERTY
        || locationInParent == EnhancedForStatement.BODY_PROPERTY
        || locationInParent == DoStatement.BODY_PROPERTY
        || locationInParent == WhileStatement.BODY_PROPERTY) {
      // create intermediate block if target was the body property of a control statement:
      Block replacement = rewrite.getAST().newBlock();
      ListRewrite replacementRewrite =
          rewrite.getListRewrite(replacement, Block.STATEMENTS_PROPERTY);
      replacementRewrite.insertFirst(declaration, null);
      replacementRewrite.insertLast(rewrite.createMoveTarget(target), null);
      rewrite.replace(target, replacement, groupDescription);
      return;
    }
    target = parent;
    parent = parent.getParent();
    locationInParent = target.getLocationInParent();
  }
  ListRewrite listRewrite =
      rewrite.getListRewrite(parent, (ChildListPropertyDescriptor) locationInParent);
  listRewrite.insertBefore(declaration, target, groupDescription);
}
 

private void insertAt(ASTNode target, Statement declaration) {
	ASTRewrite rewrite= fCURewrite.getASTRewrite();
	TextEditGroup groupDescription= fCURewrite.createGroupDescription(RefactoringCoreMessages.ExtractTempRefactoring_declare_local_variable);

	ASTNode parent= target.getParent();
	StructuralPropertyDescriptor locationInParent= target.getLocationInParent();
	while (locationInParent != Block.STATEMENTS_PROPERTY && locationInParent != SwitchStatement.STATEMENTS_PROPERTY) {
		if (locationInParent == IfStatement.THEN_STATEMENT_PROPERTY
				|| locationInParent == IfStatement.ELSE_STATEMENT_PROPERTY
				|| locationInParent == ForStatement.BODY_PROPERTY
				|| locationInParent == EnhancedForStatement.BODY_PROPERTY
				|| locationInParent == DoStatement.BODY_PROPERTY
				|| locationInParent == WhileStatement.BODY_PROPERTY) {
			// create intermediate block if target was the body property of a control statement:
			Block replacement= rewrite.getAST().newBlock();
			ListRewrite replacementRewrite= rewrite.getListRewrite(replacement, Block.STATEMENTS_PROPERTY);
			replacementRewrite.insertFirst(declaration, null);
			replacementRewrite.insertLast(rewrite.createMoveTarget(target), null);
			rewrite.replace(target, replacement, groupDescription);
			return;
		}
		target= parent;
		parent= parent.getParent();
		locationInParent= target.getLocationInParent();
	}
	ListRewrite listRewrite= rewrite.getListRewrite(parent, (ChildListPropertyDescriptor)locationInParent);
	listRewrite.insertBefore(declaration, target, groupDescription);
}
 

/**
 * Returns true if a node at a given location is a body of a control statement. Such body nodes are
 * interesting as when replacing them, it has to be evaluates if a Block is needed instead.
 * E.g. <code> if (x) do(); -> if (x) { do1(); do2() } </code>
 *
 * @param locationInParent Location of the body node
 * @return Returns true if the location is a body node location of a control statement.
 */
public static boolean isControlStatementBody(StructuralPropertyDescriptor locationInParent) {
	return locationInParent == IfStatement.THEN_STATEMENT_PROPERTY
		|| locationInParent == IfStatement.ELSE_STATEMENT_PROPERTY
		|| locationInParent == ForStatement.BODY_PROPERTY
		|| locationInParent == EnhancedForStatement.BODY_PROPERTY
		|| locationInParent == WhileStatement.BODY_PROPERTY
		|| locationInParent == DoStatement.BODY_PROPERTY;
}