/// <summary>
/// Gets the variables in a (bind, project) pair.
/// </summary>
private static QueryStatement GetVariables(BindProjectPair pair)
{
var project = pair.Project;
var isLet = project.Parameters.Any(param => param.Name.StartsWith(LET_PREFIX));
if (isLet)
{
var letParam = project.Parameters.ElementAt(1);
var letName = letParam.Name;
var originalName = Regex.Split(letName, LET_PREFIX)[1];
var letExpression = Expression.Lambda(project.Body, project.Parameters.First(),
Expression.Parameter(letParam.Type, originalName));
var letVariables = ParseExpression.GetExpressionVariables(letExpression);
return(new LetStatement(originalName, letExpression, letVariables));
}
var bindVars = ParseExpression.GetExpressionVariables(pair.Bind);
var projectVars = ParseExpression.GetExpressionVariables(project);
return(new BindProjectStatement(pair, bindVars, projectVars)
{
IsSelect = pair.IsSelect
});
}
public BindProjectStatement(BindProjectPair expressions, ExpressionVariables bindVars, ExpressionVariables projectVars)
{
Expressions = expressions;
BindVariables = bindVars;
ProjectVariables = projectVars;
}
