Vega.jl/src/dsl_vlplot_macro/dsl_vlplot_macro.jl at 9f6b92e547c6ac945ce50cbcf094df16650565fb · queryverse/Vega.jl · GitHub

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function convert_curly_style_array(exprs, fragtype)
    res = Expr(:vect)

    for ex in exprs
        if ex isa Expr && ex.head == :braces
            push!(res.args, :($(convert_curly_style(ex.args, fragtype))))
        else
            push!(res.args, esc(ex))
        end
    end

    return res
end

function convert_curly_style(exprs, fragtype)
    new_expr = :($fragtype(Any[], OrderedDict{String,Any}()))

    pos_args = new_expr.args[2].args
    named_args = new_expr.args[3].args

    for ex in exprs
        if ex isa Expr && ex.head == :(=)
            if ex.args[2] isa Expr && ex.args[2].head == :braces
                push!(named_args, :($(string(ex.args[1])) => $(convert_curly_style(ex.args[2].args, fragtype))))
            elseif ex.args[2] isa Expr && ex.args[2].head == :vect
                push!(named_args, :($(string(ex.args[1])) => $(convert_curly_style_array(ex.args[2].args, fragtype))))
            else
                push!(named_args, :($(string(ex.args[1])) => $(esc(ex.args[2]))))
            end
        elseif ex isa Expr && ex.head == :braces
            push!(pos_args, convert_curly_style(ex.args, fragtype))
        else
            push!(pos_args, esc(ex))
        end
    end

    return new_expr
end

macro vgplot(ex...)
    new_ex = convert_curly_style(ex, VGFrag)

    return :(Vega.VGSpec(convert_frag_tree_to_dict(fix_shortcut_level_spec($new_ex))))
end

macro vgfrag(ex...)
    new_ex = convert_curly_style(ex, VGFrag)

    return new_ex
end