public static string UnsupportedTargetTypeForAggregateFunction(AggregateFunctionContext context)
{
StringBuilder error = GetIntro(context.Member);
error.AppendFormat("Aggregate function '{0}' doesn't support type '{1}' as target type",
context.ImplementationType, context.Member.Type);
return error.ToString();
}
virtual public IEnumerable <string> GetIterationStatements(AggregateFunctionContext context, IList <AggregateExpressionPathItem> pathItems)
{
AggregateExpressionPathItem lastPathItem = pathItems[pathItems.Count - 1];
string finalTarget = "";
foreach (AggregateExpressionPathItem pathItem in pathItems)
{
if (pathItem.IsCollection)
{
finalTarget = pathItem.Object;
}
}
string finalExpression = context.Member.AggregateMappingDescription.FinalExpression;
string processedExpression = "";
if ((string.IsNullOrEmpty(finalExpression) || lastPathItem.IsCollection))
{
processedExpression = finalTarget;
}
else
{
processedExpression = string.Format("{0}.{1}", finalTarget, finalExpression);
}
string fullFormat = GetFormatForExecutedExpression(context);
fullFormat = fullFormat.Replace("FN_OBJ", "{0}");
fullFormat = fullFormat.Replace("CURR_ITEM", "{1}");
return(new string[] { string.Format(fullFormat, context.FunctionObjectName, processedExpression) });
}
public override CodeStatement GetAssignmentStatement(AggregateFunctionContext context)
{
string resultExpression = m_isArray ? string.Format("{0}.ToArray()", context.FunctionObjectName) : context.FunctionObjectName;
return new CodeAssignStatement(
new CodeVariableReferenceExpression("target." + context.Member.Member),
new CodeArgumentReferenceExpression(resultExpression));
}
public virtual IEnumerable<CodeStatement> GetInitializationStatements(AggregateFunctionContext context)
{
CodeExpression[] parameters = new CodeExpression[0];
CodeStatement st = new CodeVariableDeclarationStatement(context.ImplementationType, context.FunctionObjectName,
new CodeObjectCreateExpression(context.ImplementationType, parameters));
return new CodeStatement[] {st};
}
virtual public IEnumerable <CodeStatement> GetInitializationStatements(AggregateFunctionContext context)
{
CodeExpression[] parameters = new CodeExpression[0];
CodeStatement st = new CodeVariableDeclarationStatement(context.ImplementationType, context.FunctionObjectName,
new CodeObjectCreateExpression(context.ImplementationType, parameters));
return(new CodeStatement[] { st });
}
public virtual CodeStatement GetAssignmentStatement(AggregateFunctionContext context)
{
string resultExpression = context.FunctionObjectName + ".Result";
if (context.Member.HasFormatting)
resultExpression = string.Format("string.Format(\"{0}\", {1}.Result)", context.Member.Format, context.FunctionObjectName);
return new CodeAssignStatement(
new CodeVariableReferenceExpression("target." + context.Member.Member),
new CodeArgumentReferenceExpression(resultExpression));
}
public virtual CodeStatement GetAssignmentStatement(AggregateFunctionContext context)
{
m_context = context;
string expression = GetResultExpression();
if (context.Member.HasFormatting)
expression = string.Format("string.Format(\"{0}\", {1})", context.Member.Format, expression);
return new CodeAssignStatement(
new CodeVariableReferenceExpression("target." + context.Member.Member),
new CodeArgumentReferenceExpression(expression));
}
public override IEnumerable<CodeStatement> GetInitializationStatements(AggregateFunctionContext context)
{
List<CodeStatement> statements = new List<CodeStatement>(base.GetInitializationStatements(context));
CodeStatement st = new CodeVariableDeclarationStatement(typeof(int),
GetCounterObjectName(context),
new CodeSnippetExpression("0"));
statements.Add(st);
return statements;
}
virtual public CodeStatement GetAssignmentStatement(AggregateFunctionContext context)
{
string resultExpression = context.FunctionObjectName + ".Result";
if (context.Member.HasFormatting)
{
resultExpression = string.Format("string.Format(\"{0}\", {1}.Result)", context.Member.Format, context.FunctionObjectName);
}
return(new CodeAssignStatement(
new CodeVariableReferenceExpression("target." + context.Member.Member),
new CodeArgumentReferenceExpression(resultExpression)));
}
public override IEnumerable<CodeStatement> GetInitializationStatements(AggregateFunctionContext context)
{
MemberMappingDescriptor member = context.Member;
Type resultType;
Type instanceType;
bool isSimpleMapping = false;
if (member.IsArray || member.IsList)
{
instanceType = member.IsArray ?
member.AggregateMappingDescription.TargetType.GetElementType() :
member.AggregateMappingDescription.TargetType.GetGenericArguments()[0];
resultType = typeof(List<>).MakeGenericType(instanceType);
if (!instanceType.IsPrimitive && instanceType != typeof(string))
{
m_expression = string.Format("{{0}}.Add({0}.AssembleFrom({{1}}));", GetAssemblerName(context));
}
else
{
m_expression = "{0}.Add({1});";
isSimpleMapping = true;
}
}
else
{
string msg = ErrorBuilder.CantAggregateOverNoncollectionError(member, "collect");
throw new OtisException(msg); //todo: test
}
m_isArray = member.IsArray;
List<CodeStatement> statements = new List<CodeStatement>();
CodeExpression[] parameters = new CodeExpression[0];
CodeStatement st = new CodeVariableDeclarationStatement(resultType,
context.FunctionObjectName,
new CodeObjectCreateExpression(resultType, parameters));
statements.Add(st);
if(!isSimpleMapping)
{
st = new CodeVariableDeclarationStatement(
string.Format("IAssembler<{0}, {1}>", TypeHelper.GetTypeDefinition(instanceType), TypeHelper.GetTypeDefinition(context.SourceItemType)),
GetAssemblerName(context),
new CodeSnippetExpression("this"));
statements.Add(st);
}
return statements;
}
public virtual IEnumerable<CodeStatement> GetInitializationStatements(AggregateFunctionContext context)
{
m_context = context;
if(!IsTypeSupportedAsTarget(context.Member.Type))
throw new OtisException(GetUnsupportedTargetTypeErrorMessage());
if (!IsTypeSupportedAsSource(context.SourceItemType))
throw new OtisException(GetUnsupportedSourceTypeErrorMessage());
CodeStatement st = new CodeVariableDeclarationStatement(GetFunctionObjectType(),
context.FunctionObjectName,
new CodeSnippetExpression(GetFunctionObjectInitialValue()));
return new CodeStatement[] {st};
}
private string GetProcessedExpressionFormat(AggregateFunctionContext context)
{
IExpressionFormatProvider fmtProvider = context.Generator as IExpressionFormatProvider;
if (fmtProvider == null)
{
Type realImplementationType = context.ImplementationType.IsGenericTypeDefinition ?
context.ImplementationType.MakeGenericType(typeof (int)) :
context.ImplementationType;
fmtProvider = (IExpressionFormatProvider) Activator.CreateInstance(realImplementationType, true);
}
if (string.IsNullOrEmpty(fmtProvider.ExpressionFormat))
return "{1}";
else
return fmtProvider.ExpressionFormat;
}
public virtual IEnumerable<string> GetIterationStatements(AggregateFunctionContext context, IList<AggregateExpressionPathItem> pathItems)
{
AggregateExpressionPathItem lastPathItem = pathItems[pathItems.Count - 1];
string finalTarget = "";
foreach (AggregateExpressionPathItem pathItem in pathItems)
if (pathItem.IsCollection)
finalTarget = pathItem.Object;
string finalExpression = context.Member.AggregateMappingDescription.FinalExpression;
string processedExpression = "";
if ((string.IsNullOrEmpty(finalExpression) || lastPathItem.IsCollection))
processedExpression = finalTarget;
else
processedExpression = string.Format("{0}.{1}", finalTarget, finalExpression);
string fullFormat = GetFormatForExecutedExpression(context);
fullFormat = fullFormat.Replace("FN_OBJ", "{0}");
fullFormat = fullFormat.Replace("CURR_ITEM", "{1}");
return new string[] { string.Format(fullFormat, context.FunctionObjectName, processedExpression) };
}
private string GetProcessedExpressionFormat(AggregateFunctionContext context)
{
IExpressionFormatProvider fmtProvider = context.Generator as IExpressionFormatProvider;
if (fmtProvider == null)
{
Type realImplementationType = context.ImplementationType.IsGenericTypeDefinition ?
context.ImplementationType.MakeGenericType(typeof(int)) :
context.ImplementationType;
fmtProvider = (IExpressionFormatProvider)Activator.CreateInstance(realImplementationType, true);
}
if (string.IsNullOrEmpty(fmtProvider.ExpressionFormat))
{
return("{1}");
}
else
{
return(fmtProvider.ExpressionFormat);
}
}
protected override string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
return "FN_OBJ = FN_OBJ + 1;";
}
protected virtual string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
string processedExpressionFormat = GetProcessedExpressionFormat(context);
return "{0}.ProcessValue(" + processedExpressionFormat + ")";
}
protected virtual string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
string processedExpressionFormat = GetProcessedExpressionFormat(context);
return("{0}.ProcessValue(" + processedExpressionFormat + ")");
}
protected override string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
return string.Format("FN_OBJ.Append(CURR_ITEM); FN_OBJ.Append(\"{0}\");", Separator);
// -> "{{ FN_OBJ.Append(CURR_ITEM); FN_OBJ.Append(\"separator\"); }}"
// -> "{ FN_OBJ.Append(CURR_ITEM); FN_OBJ.Append(\"separator\"); }"
}
protected override string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
// todo: test
return string.Format("FN_OBJ = FN_OBJ + CURR_ITEM; {0}++;", GetCounterObjectName(context));
}
protected abstract string GetFormatForExecutedExpression(AggregateFunctionContext context);
private static string GetCounterObjectName(AggregateFunctionContext context)
{
return context.FunctionObjectName + "_Cnt";
}
protected override string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
// todo: test
return m_expression;
}
protected override string GetFormatForExecutedExpression(AggregateFunctionContext context)
{
// todo: test
return "if(CURR_ITEM < FN_OBJ) FN_OBJ = CURR_ITEM;";
}
private static string GetAssemblerName(AggregateFunctionContext context)
{
return context.FunctionObjectName + "_Asm";
}
