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handle nil values in lua iterators

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This commit is contained in:
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.State.Encoding = Encoding.UTF8;
LuaState.LoadCLRPackage();
#region Iterators
// Empty function for nil iterators
LuaState.DoString("function nil_iterator() end");
//Materials and AtmosphereComposition
LuaState.DoString(@"
function materials (material_list)
local i = 0
local count = material_list.Count
return function ()
i = i + 1
if i <= count then
return { name = material_list[i - 1].Name, percent = material_list[i - 1].Percent }
if material_list then
local i = 0
local count = material_list.Count
return function ()
i = i + 1
if i <= count then
return { name = material_list[i - 1].Name, percent = material_list[i - 1].Percent }
end
end
else
return nil_iterator
end
end");
//Rings
LuaState.DoString(@"
function rings (ring_list)
local i = 0
local count = ring_list.Count
return function ()
i = i + 1
if i <= count then
local ring = ring_list[i - 1]
return { name = ring.Name, ringclass = ring.RingClass, massmt = ring.MassMT, innerrad = ring.InnerRad, outerrad = ring.OuterRad }
if ring_list then
local i = 0
local count = ring_list.Count
return function ()
i = i + 1
if i <= count then
local ring = ring_list[i - 1]
return { name = ring.Name, ringclass = ring.RingClass, massmt = ring.MassMT, innerrad = ring.InnerRad, outerrad = ring.OuterRad }
end
end
else
return nil_iterator
end
end");
//Bodies in system
LuaState.DoString(@"
function bodies (system_list)
local i = 0
local count = system_list.Count
return function ()
i = i + 1
if i <= count then
return system_list[i - 1]
if system_list then
local i = 0
local count = system_list.Count
return function ()
i = i + 1
if i <= count then
return system_list[i - 1]
end
end
else
return nil_iterator
end
end");
//Parent bodies
LuaState.DoString(@"
function allparents (parent_list)
local i = 0
local count
if parent_list then count = parent_list.Count else count = 0 end
return function ()
i = i + 1
if i <= count then
return { parenttype = parent_list[i - 1].ParentType, body = parent_list[i - 1].Body, scan = parent_list[i - 1].Scan }
if parent_list then
local i = 0
local count
if parent_list then count = parent_list.Count else count = 0 end
return function ()
i = i + 1
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
else
return nil_iterator
end
end");