public override JmesPathExpression Accept(ITransformVisitor visitor)
{
JmesPathExpression[] visitedExpressionsStorage = expressions_;
JmesPathExpression[] visitedExpressions = null;
for (int i = 0, n = expressions_.Length; i < n; i++)
{
var expression = expressions_[i];
var visitedExpression = expression.Accept(visitor);
// the first time we visited a transformed argument, allocate new
// argument storage and copy any preceding untransformed arguments
if (expression != visitedExpression && visitedExpressions == null)
{
visitedExpressions = new JmesPathExpression[n];
visitedExpressionsStorage = visitedExpressions;
if (i > 0)
{
Array.Copy(expressions_, visitedExpressions, i - 1);
}
}
visitedExpressionsStorage[i] = visitedExpression;
}
// if our visited argument storage array and the one backing this
// instance are the same, then no arguments were transformed
if (visitedExpressionsStorage == expressions_)
{
return(visitor.Visit(this));
}
return(visitor.Visit(new JmesPathFunctionExpression(name_, visitedExpressionsStorage, function_)));
}
public JmesPathIndexExpression(JmesPathExpression expression, JmesPathExpression specifier)
: base(expression, specifier)
{
System.Diagnostics.Debug.Assert(
specifier is JmesPathIndex ||
specifier is JmesPathFilterProjection ||
specifier is JmesPathFlattenProjection ||
specifier is JmesPathListWildcardProjection ||
specifier is JmesPathSliceProjection ||
false
);
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathSubExpression"/> class
/// with two <see cref="JmesPathExpression"/> objects.
/// </summary>
/// <param name="expression"></param>
/// <param name="subExpression"></param>
public JmesPathSubExpression(JmesPathExpression expression, JmesPathExpression subExpression)
: base(expression, subExpression)
{
System.Diagnostics.Debug.Assert(
subExpression is JmesPathFunctionExpression ||
subExpression is JmesPathIdentifier ||
subExpression is JmesPathMultiSelectHash ||
subExpression is JmesPathMultiSelectList ||
subExpression is JmesPathHashWildcardProjection ||
subExpression is JmesPathFunctionExpression ||
false
);
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathCompoundExpression"/> class
/// with two <see cref="JmesPathExpression"/> objects.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
protected JmesPathCompoundExpression(JmesPathExpression left, JmesPathExpression right)
{
if (left == null)
{
throw new ArgumentNullException(nameof(left));
}
if (right == null)
{
throw new ArgumentNullException(nameof(right));
}
left_ = left;
right_ = right;
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathComparison" /> class
/// that performs a comparison between two specified expressions.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
protected JmesPathComparison(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathSimpleExpression"/> class.
/// </summary>
/// <param name="expression"></param>
protected JmesPathSimpleExpression(JmesPathExpression expression)
{
expression_ = expression;
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathNotEqualOperator"/> class.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathNotEqualOperator(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
protected override JmesPathExpression CreateWith(JmesPathExpression left, JmesPathExpression right) => new JmesPathEqualOperator(left, right);
public static void MakeExpressionType(JmesPathExpression expression)
{
expression.IsExpressionType = true;
}
protected override JmesPathExpression CreateWith(JmesPathExpression left, JmesPathExpression right) => new JmesPathIndexExpression(left, right);
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathPipeExpression"/> class
/// with two <see cref="JmesPathExpression"/> objects.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathPipeExpression(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
public JmesParenExpression(JmesPathExpression expression)
{
expression_ = expression;
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathLessThanOperator"/> class
/// to perform a comparison between two specified expressions.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathLessThanOperator(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
protected abstract JmesPathExpression CreateWith(JmesPathExpression left, JmesPathExpression right);
public JmesPathFilterProjection(JmesPathExpression expression)
{
expression_ = expression;
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathNotExpression"/>
/// that negates the result of evaluating its associated expression.
/// </summary>
/// <param name="expression"></param>
public JmesPathNotExpression(JmesPathExpression expression)
: base(expression)
{
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathGreaterThanOrEqualOperator"/> class
/// to perform a comparison between two specified expressions.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathGreaterThanOrEqualOperator(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
