TLeafG Support (#379)

* Add TLeafG support

* Add TLeafG test

* Improve error reporting

Author: tamasgal

src/bootstrap.jl

@@ -349,6 +349,41 @@ end
 
 primitivetype(l::TLeafL) = l.fIsUnsigned ? UInt64 : Int64
 
+# FIXME this should be generated and inherited from TLeaf
+@with_kw struct TLeafG
+    # from TNamed
+    fName
+    fTitle
+
+    # from TLeaf
+    fLen
+    fLenType
+    fOffset
+    fIsRange
+    fIsUnsigned
+    fLeafCount
+
+    # own fields
+    fMinimum
+    fMaximum
+end
+
+function parsefields!(io, fields, T::Type{TLeafG})
+    preamble = Preamble(io, T)
+    parsefields!(io, fields, TLeaf)
+    fields[:fMinimum] = readtype(io, Int64)
+    fields[:fMaximum] = readtype(io, Int64)
+    endcheck(io, preamble)
+end
+
+function unpack(io, tkey::TKey, refs::Dict{Int32, Any}, T::Type{TLeafG})
+    @initparse
+    parsefields!(io, fields, T)
+    T(;fields...)
+end
+
+primitivetype(l::TLeafG) = Int64
+
 # FIXME this should be generated and inherited from TLeaf
 @with_kw struct TLeafO
     # from TNamed

src/streamers.jl

@@ -240,7 +240,8 @@ function readobjany!(io, tkey::TKey, refs)
             try
                 streamer = getfield(@__MODULE__, Symbol(cname))
             catch UndefVarError
-                @error "Could not get streamer for '$(cname)'"
+                @warn "Could not get streamer for '$(cname)' (TKey: $(tkey))"
+                return missing
             end
         end
 

test/bootstrapping.jl

@@ -186,3 +186,11 @@ end
     @test (UnROOT.basketarray_iter(t.b1) .|> length) == [1228, 1228, 44]
     @test length(UnROOT.basketarray(t.b1, 1)) == 1228
 end
+
+@testset "primitives" begin
+    f = UnROOT.samplefile("TLeafG.root")
+    toa = UnROOT.array(f, "TOA/TOA_NS")
+    @test 55548 == length(toa)
+    @test 1675274976213420032 == toa[1]
+    @test 1675275224652052992 == toa[end]
+end