/// <summary>
/// Convert expression to code.
/// </summary>
/// <param name="expression">Expression.</param>
/// <param name="converter">Expression converter.</param>
/// <returns>Parts.</returns>
public override ICode Convert(MethodCallExpression expression, ExpressionConverter converter)
{
//ALL, DISTINCT, TOP
int expressionIndex = expression.SkipMethodChain(0);
var selectParts = new ICode[expression.Arguments.Count - expressionIndex];
selectParts[0] = string.IsNullOrEmpty(Name) ? SelectClause : Name.ToCode();
for (int i = 0; i < selectParts.Length - 1; i++, expressionIndex++)
{
selectParts[i + 1] = converter.ConvertToCode(expression.Arguments[expressionIndex]);
}
var select = LineSpace(selectParts);
//select elemnts.
var selectTargets = expression.Arguments[expression.Arguments.Count - 1];
//*
if (typeof(AsteriskElement).IsAssignableFromEx(selectTargets.Type))
{
select.Add("*".ToCode());
return(new SelectClauseCode(select));
}
//new []{ a, b, c} recursive.
else if (selectTargets.Type.IsArray)
{
var newArrayExp = selectTargets as NewArrayExpression;
if (newArrayExp != null)
{
var array = new ICode[newArrayExp.Expressions.Count];
for (int i = 0; i < array.Length; i++)
{
array[i] = converter.ConvertToCode(newArrayExp.Expressions[i]);
}
var coreCode = new VCode(select, new VCode(array)
{
Indent = 1, Separator = ","
});
return(new SelectClauseCode(coreCode));
}
}
//new { item = db.tbl.column }
{
var createInfo = ObjectCreateAnalyzer.MakeObjectCreateInfo(selectTargets);
var elements = new ICode[createInfo.Members.Length];
for (int i = 0; i < elements.Length; i++)
{
elements[i] = ConvertSelectedElement(converter, createInfo.Members[i]);
}
var coreCode = new VCode(select, new VCode(elements)
{
Indent = 1, Separator = ","
});
return(new SelectClauseCode(coreCode));
}
}
/// <summary>
/// Convert expression to code.
/// </summary>
/// <param name="expression">Expression.</param>
/// <param name="converter">Expression converter.</param>
/// <returns>Parts.</returns>
public override ICode Convert(MethodCallExpression expression, ExpressionConverter converter)
{
var name = FromConverterAttribute.GetSubQuery(expression.Arguments[0]);
var coreType = expression.Arguments[0].Type.GetGenericArgumentsEx()[0];
var info = ObjectCreateAnalyzer.MakeObjectCreateInfo(coreType);
//TODO
return(new WithEntriedCode(Line(name.ToCode(), Blanket(info.Members.Select(e => e.Name.ToCode()).ToArray())), new[] { name }));
}
