Java 类com.intellij.psi.PsiEmptyStatement 实例源码

@Override
public void visitEmptyStatement(PsiEmptyStatement statement) {
    mVisitor.report("PsiEmptyStatement", statement.getText(), statement);
    super.visitStatement(statement);
}

/**
 * Adds new statements before given anchor statement creating a new code block, if necessary
 *
 * @param anchor        existing statement
 * @param newStatements the new statements which should be added before the existing one
 * @return last added physical statement
 */
public static PsiStatement addBefore(PsiStatement anchor, PsiStatement... newStatements)
{
    if(newStatements.length == 0)
    {
        throw new IllegalArgumentException();
    }
    PsiElement oldStatement = anchor;
    PsiElement parent = oldStatement.getParent();
    while(parent instanceof PsiLabeledStatement)
    {
        oldStatement = parent;
        parent = oldStatement.getParent();
    }
    if(newStatements.length == 1 && oldStatement instanceof PsiEmptyStatement)
    {
        return (PsiStatement) oldStatement.replace(newStatements[0]);
    }
    PsiElement result = null;
    if(parent instanceof PsiCodeBlock)
    {
        for(PsiStatement statement : newStatements)
        {
            result = parent.addBefore(statement, oldStatement);
        }
    }
    else
    {
        final PsiElementFactory factory = JavaPsiFacade.getElementFactory(anchor.getProject());
        final PsiBlockStatement newBlockStatement = (PsiBlockStatement) factory.createStatementFromText("{}", oldStatement);
        final PsiElement codeBlock = newBlockStatement.getCodeBlock();
        for(PsiStatement newStatement : newStatements)
        {
            codeBlock.add(newStatement);
        }
        codeBlock.add(oldStatement);
        final PsiStatement[] statements = ((PsiBlockStatement) oldStatement.replace(newBlockStatement)).getCodeBlock().getStatements();
        result = statements[statements.length - 2];
    }
    return (PsiStatement) result;
}