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handle nil values in lua iterators

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Xjph 2021-12-18 13:23:05 -03:30
parent 714537e58a
commit b2d0637146
1 changed files with 46 additions and 27 deletions
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73
ObservatoryExplorer/CustomCriteriaManager.cs
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@ -23,60 +23,79 @@ namespace Observatory.Explorer
LuaState = new(); LuaState = new();
LuaState.State.Encoding = Encoding.UTF8; LuaState.State.Encoding = Encoding.UTF8;
LuaState.LoadCLRPackage(); LuaState.LoadCLRPackage();
#region Iterators #region Iterators
// Empty function for nil iterators
LuaState.DoString("function nil_iterator() end");
//Materials and AtmosphereComposition //Materials and AtmosphereComposition
LuaState.DoString(@" LuaState.DoString(@"
function materials (material_list) function materials (material_list)
local i = 0 if material_list then
local count = material_list.Count local i = 0
return function () local count = material_list.Count
i = i + 1 return function ()
if i <= count then i = i + 1
return { name = material_list[i - 1].Name, percent = material_list[i - 1].Percent } if i <= count then
return { name = material_list[i - 1].Name, percent = material_list[i - 1].Percent }
end
end end
else
return nil_iterator
end end
end"); end");
//Rings //Rings
LuaState.DoString(@" LuaState.DoString(@"
function rings (ring_list) function rings (ring_list)
local i = 0 if ring_list then
local count = ring_list.Count local i = 0
return function () local count = ring_list.Count
i = i + 1 return function ()
if i <= count then i = i + 1
local ring = ring_list[i - 1] if i <= count then
return { name = ring.Name, ringclass = ring.RingClass, massmt = ring.MassMT, innerrad = ring.InnerRad, outerrad = ring.OuterRad } local ring = ring_list[i - 1]
return { name = ring.Name, ringclass = ring.RingClass, massmt = ring.MassMT, innerrad = ring.InnerRad, outerrad = ring.OuterRad }
end
end end
else
return nil_iterator
end end
end"); end");
//Bodies in system //Bodies in system
LuaState.DoString(@" LuaState.DoString(@"
function bodies (system_list) function bodies (system_list)
local i = 0 if system_list then
local count = system_list.Count local i = 0
return function () local count = system_list.Count
i = i + 1 return function ()
if i <= count then i = i + 1
return system_list[i - 1] if i <= count then
return system_list[i - 1]
end
end end
else
return nil_iterator
end end
end"); end");
//Parent bodies //Parent bodies
LuaState.DoString(@" LuaState.DoString(@"
function allparents (parent_list) function allparents (parent_list)
local i = 0 if parent_list then
local count local i = 0
if parent_list then count = parent_list.Count else count = 0 end local count
return function () if parent_list then count = parent_list.Count else count = 0 end
i = i + 1 return function ()
if i <= count then i = i + 1
return { parenttype = parent_list[i - 1].ParentType, body = parent_list[i - 1].Body, scan = parent_list[i - 1].Scan } if i <= count then
return { parenttype = parent_list[i - 1].ParentType, body = parent_list[i - 1].Body, scan = parent_list[i - 1].Scan }
end
end end
else
return nil_iterator
end end
end"); end");