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missed a spot little refactor pycall and conda to extras little refactoring
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| Original file line number | Diff line number | Diff line change |
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@@ -5,4 +5,4 @@ Manifest.toml | |
| *.jl.mem | ||
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| test/_scrap.jl | ||
| .DS_STORE | ||
| .vscode | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,36 @@ | ||
| module CDataInterface | ||
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| export ArrowSchema, ArrowArray, getschema, getarray | ||
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| include("c_definitions.jl") | ||
| include("jl_definitions.jl") | ||
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| function getschema(f) | ||
| schref = Ref{CArrowSchema}() | ||
| ptr = Base.unsafe_convert(Ptr{CArrowSchema}, schref) | ||
| f(ptr) | ||
| sch = ArrowSchema(schref) | ||
| finalizer(sch) do x | ||
| r = getfield(x.carrowschema[], :release) | ||
| if r != C_NULL | ||
| ccall(r, Cvoid, (Ptr{CArrowSchema},), x.carrowschema) | ||
| end | ||
| end | ||
| return sch | ||
| end | ||
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| function getarray(f) | ||
| arr_ref = Ref{CArrowArray}() | ||
| ptr = Base.unsafe_convert(Ptr{CArrowArray}, arr_ref) | ||
| f(ptr) | ||
| arr = ArrowArray(arr_ref) | ||
| finalizer(arr) do x | ||
| r = getfield(x.c_arrow_array[], :release) | ||
| if r != C_NULL | ||
| ccall(r, Cvoid, (Ptr{CArrowArray},), x.c_arrow_array) | ||
| end | ||
| end | ||
| return arr | ||
| end | ||
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| end # module |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,66 @@ | ||
| # https://arrow.apache.org/docs/format/CDataInterface.html#data-type-description-format-strings | ||
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| function get_type_from_format_string(format_string ::String) ::DataType | ||
| if format_string == "n" | ||
| Nothing | ||
| elseif format_string == "b" | ||
| Bool | ||
| elseif format_string == "c" | ||
| Int8 | ||
| elseif format_string == "C" | ||
| UInt8 | ||
| elseif format_string == "s" | ||
| Int16 | ||
| elseif format_string == "S" | ||
| UInt16 | ||
| elseif format_string == "i" | ||
| Int32 | ||
| elseif format_string == "I" | ||
| UInt32 | ||
| elseif format_string == "l" | ||
| Int64 | ||
| elseif format_string == "L" | ||
| UInt64 | ||
| elseif format_string == "e" | ||
| Float16 | ||
| elseif format_string == "f" | ||
| Float32 | ||
| elseif format_string == "g" | ||
| Float64 | ||
| elseif format_string == "z" || format_string == "Z" | ||
| Vector{UInt8} | ||
| elseif format_string == "u" || format_string == "U" | ||
| String | ||
| elseif format_string[1] == 'd' | ||
| const splits = split(format_string[3:end], ",") | ||
| precision = Int(splits[1]) | ||
| scale = Int(splits[2]) | ||
| if length(splits) == 3 | ||
| bandwidth = splits[3] | ||
| end | ||
| #TODO return something here | ||
| elseif format_string[1] == 'w' | ||
| #TODO figure out fixed width binary | ||
| elseif format_string[1] == '+' | ||
| if format_string[2] == 'l' || format_string[2] == 'L' | ||
| Arrow.List | ||
| elseif format_string[2] == 'w' | ||
| size = Int(format_string[4:end]) #TODO use this somehow | ||
| Arrow.FixedSizeList | ||
| elseif format_string[2] == 's' | ||
| Arrow.Struct | ||
| elseif format_string[2] == 'm' | ||
| Arrow.Map | ||
| elseif format_string[2:3] == "ud" | ||
| type_strings = split(format_string[5:end], ",") # todo use this somehow | ||
| Arrow.DenseUnion | ||
| elseif format_string[2:3] == "us" | ||
| type_strings = split(format_string[5:end], ",") # todo use this somehow | ||
| Arrow.DenseUnion | ||
| end | ||
| elseif format_string [1] == 't' | ||
| # todo return something here | ||
| end | ||
| end | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,66 @@ | ||
| mutable struct ArrowSchema | ||
| format::String | ||
| name::String | ||
| metadata::Dict{String, String} | ||
| flags::Int64 | ||
| n_children::Int64 | ||
| children::Vector{ArrowSchema} | ||
| dictionary::Union{Nothing, ArrowSchema} | ||
| carrowschema::Ref{CArrowSchema} | ||
| end | ||
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| ArrowSchema(s::Ref{CArrowSchema}) = ArrowSchema( | ||
| s[].format, | ||
| s[].name, | ||
| s[].metadata, | ||
| s[].flags, | ||
| s[].n_children, | ||
| map(ArrowSchema, s[].children), | ||
| s[].dictionary === nothing ? nothing : ArrowSchema(s[].dictionary), | ||
| s | ||
| ) | ||
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| ArrowSchema(s::CArrowSchema) = ArrowSchema( | ||
| s.format, | ||
| s.name, | ||
| s.metadata, | ||
| s.flags, | ||
| s.n_children, | ||
| map(ArrowSchema, s.children), s.dictionary === nothing ? nothing : ArrowSchema(s.dictionary), | ||
| Ref{CArrowSchema}() | ||
| ) | ||
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| mutable struct ArrowArray | ||
| length::Int64 | ||
| null_count::Int64 | ||
| offset::Int64 | ||
| n_buffers::Int64 | ||
| n_children::Int64 | ||
| buffers::Vector{Ptr{UInt8}} | ||
| children::Vector{ArrowArray} | ||
| dictionary::Union{Nothing, ArrowArray} | ||
| c_arrow_array::Ref{CArrowArray} | ||
| end | ||
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| ArrowArray(a::Ref{CArrowArray}) = ArrowArray( | ||
| a[].length, | ||
| a[].null_count, | ||
| a[].offset, | ||
| a[].n_buffers, | ||
| a[].n_children, | ||
| a[].buffers, | ||
| map(ArrowArray, a[].children), a[].dictionary === nothing ? nothing : ArrowArray(a[].dictionary), | ||
| a | ||
| ) | ||
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| ArrowArray(a::CArrowArray) = ArrowArray( | ||
| a.length, | ||
| a.null_count, | ||
| a.offset, | ||
| a.n_buffers, | ||
| a.n_children, | ||
| a.buffers, | ||
| map(ArrowArray, a.children), | ||
| a.dictionary === nothing ? nothing : ArrowArray(a.dictionary), | ||
| Ref{CArrowArray}() | ||
| ) |