public Expression Resolve(LinqCompiler _compiler)
{
UIForiaLinqCompiler compiler = (UIForiaLinqCompiler)_compiler;
switch (variableType)
{
case AliasResolverType.ContextVariable: {
ParameterExpression el = compiler.GetElement();
Expression access = Expression.MakeMemberAccess(el, TemplateCompiler.s_UIElement_BindingNode);
Expression call = ExpressionFactory.CallInstanceUnchecked(access, TemplateCompiler.s_LinqBindingNode_GetContextVariable, Expression.Constant(id));
Type varType = ReflectionUtil.CreateGenericType(typeof(ContextVariable <>), type);
UnaryExpression convert = Expression.Convert(call, varType);
ParameterExpression variable = compiler.AddVariable(type, "ctxVar_resolve_" + GetName());
compiler.Assign(variable, Expression.MakeMemberAccess(convert, varType.GetField("value")));
return(variable);
}
case AliasResolverType.RepeatItem: {
compiler.Comment(name);
//var repeat_item_name = element.bindingNode.GetRepeatItem<T>(id).value;
ParameterExpression el = compiler.GetElement();
Expression access = Expression.MakeMemberAccess(el, TemplateCompiler.s_UIElement_BindingNode);
ReflectionUtil.TypeArray1[0] = type;
MethodInfo getItem = TemplateCompiler.s_LinqBindingNode_GetRepeatItem.MakeGenericMethod(ReflectionUtil.TypeArray1);
Expression call = ExpressionFactory.CallInstanceUnchecked(access, getItem, Expression.Constant(id));
Type varType = ReflectionUtil.CreateGenericType(typeof(ContextVariable <>), type);
ParameterExpression variable = compiler.AddVariable(type, "repeat_item_" + GetName());
compiler.Assign(variable, Expression.MakeMemberAccess(call, varType.GetField(nameof(ContextVariable <int> .value))));
return(variable);
}
case AliasResolverType.RepeatIndex: {
ParameterExpression el = compiler.GetElement();
Expression access = Expression.MakeMemberAccess(el, TemplateCompiler.s_UIElement_BindingNode);
Expression call = ExpressionFactory.CallInstanceUnchecked(access, TemplateCompiler.s_LinqBindingNode_GetContextVariable, Expression.Constant(id));
UnaryExpression convert = Expression.Convert(call, typeof(ContextVariable <int>));
ParameterExpression variable = compiler.AddVariable(type, "repeat_index_" + GetName());
compiler.Assign(variable, Expression.MakeMemberAccess(convert, typeof(ContextVariable <int>).GetField(nameof(ContextVariable <int> .value))));
return(variable);
}
default:
throw new ArgumentOutOfRangeException();
}
}
public Expression ResolveType(LinqCompiler _compiler)
{
UIForiaLinqCompiler compiler = (UIForiaLinqCompiler)_compiler;
switch (variableType)
{
case AliasResolverType.ContextVariable: {
return(compiler.AddVariable(type, "ctxvar_" + GetName()));;
}
case AliasResolverType.RepeatItem: {
return(compiler.AddVariable(type, "repeat_item_" + GetName()));
}
case AliasResolverType.RepeatIndex: {
return(compiler.AddVariable(typeof(int), "ctxvar_" + GetName()));
}
default:
throw new ArgumentOutOfRangeException();
}
}
protected override void SetupClosure(LinqCompiler p)
{
this.parent = p as UIForiaLinqCompiler;
}
