MetaUtils - Utilities for metaprogramming in Julia

julia> ]
pkg> add https://github.com/genkuroki/MetaUtils.jl

julia> using Pkg; Pkg.add(url="https://github.com/genkuroki/MetaUtils.jl")

julia> using MetaUtils

julia> @show_sexpr 2x+1
(:call, :+, (:call, :*, 2, :x), 1)

julia> x = 10; (:call, :+, (:call, :*, 2, :x), 1) |> teval
21

julia> @show_tree 2x+1
Expr(:call)
├─ :+
├─ Expr(:call)
│  ├─ :*
│  ├─ 2
│  └─ :x
└─ 1

julia> show_tree(:(2x+1))
Expr(:call)
├─ :+
├─ Expr(:call)
│  ├─ :*
│  ├─ 2
│  └─ :x
└─ 1

julia> print_subtypes(AbstractRange)
AbstractRange
├─ LinRange
├─ OrdinalRange
│  ├─ AbstractUnitRange
│  │  ├─ Base.IdentityUnitRange
│  │  ├─ Base.OneTo
│  │  ├─ Base.Slice
│  │  └─ UnitRange
│  └─ StepRange
└─ StepRangeLen

julia> show_expr(:(f(x, g(y, z))))
Expr(:call, :f, :x, 
    Expr(:call, :g, :y, :z))

julia> @show_expr 2x+1
Expr(:call, :+, 
    Expr(:call, :*, 2, :x), 1)

julia> x = 10; Expr(:call, :+, 
    Expr(:call, :*, 2, :x), 1) |> eval
21

julia> show_expr(:(f(x, g(y, z))))
Expr(:call, :f, :x, 
    Expr(:call, :g, :y, :z))

julia> @show_texpr 2x+1
(:call, :+, 
    (:call, :*, 2, :x), 1)

julia> x = 10; (:call, :+, 
    (:call, :*, 2, :x), 1) |> teval
21

julia> (:call, :sin, (:call, :/, π, 6)) |> teval
0.49999999999999994

julia> @teval (:call, :sin, (:call, :/, π, 6))
0.49999999999999994

julia> (:sin, (:/, π, 6)) |> teval
0.49999999999999994

julia> @teval (:sin, (:/, π, 6))
0.49999999999999994

julia> MetaUtils.@t (:call, :sin, (:call, :/, π, 6))
:(sin(π / 6))
→ 0.49999999999999994

julia> MetaUtils.@T (:call, :sin, (:call, :/, π, 6))
(:call, :sin, (:call, :/, π, 6))
→ (:call, :sin, 
    (:call, :/, π, 6))
→ :(sin(π / 6))
→ 0.49999999999999994