Packages
igniter
0.3.66
0.8.2
0.8.1
0.8.0
0.7.9
0.7.8
0.7.7
0.7.6
0.7.5
0.7.4
0.7.3
0.7.2
0.7.1
0.7.0
0.6.30
0.6.29
0.6.28
0.6.27
0.6.26
0.6.25
0.6.24
0.6.23
0.6.22
0.6.21
0.6.20
0.6.19
0.6.18
0.6.17
0.6.16
0.6.15
0.6.14
0.6.13
0.6.12
0.6.11
0.6.10
0.6.9
0.6.8
0.6.7
0.6.6
0.6.5
0.6.4
0.6.3
0.6.2
0.6.1
0.6.0
0.5.52
0.5.51
0.5.50
0.5.49
0.5.48
0.5.47
0.5.46
0.5.45
0.5.44
0.5.43
0.5.42
0.5.41
0.5.40
0.5.39
0.5.38
0.5.37
0.5.36
0.5.35
0.5.34
0.5.33
0.5.32
0.5.31
0.5.30
0.5.29
0.5.28
0.5.27
0.5.26
0.5.25
0.5.24
0.5.23
0.5.22
0.5.21
0.5.20
0.5.19
0.5.18
0.5.17
0.5.16
0.5.15
0.5.14
0.5.13
0.5.12
0.5.11
0.5.10
0.5.9
0.5.8
0.5.7
0.5.6
0.5.5
0.5.4
0.5.3
0.5.2
0.5.1
0.5.0
0.4.8
0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.78
0.3.77
0.3.76
0.3.75
0.3.74
0.3.73
0.3.72
0.3.71
0.3.70
0.3.69
0.3.68
0.3.67
0.3.66
0.3.65
0.3.64
0.3.63
0.3.62
0.3.61
0.3.60
0.3.59
0.3.58
0.3.57
0.3.56
0.3.55
0.3.54
0.3.53
0.3.52
0.3.51
0.3.50
0.3.49
0.3.48
0.3.47
0.3.46
0.3.45
0.3.44
0.3.43
0.3.42
0.3.41
0.3.40
0.3.39
0.3.38
0.3.37
0.3.36
0.3.35
0.3.34
0.3.33
0.3.32
0.3.31
0.3.30
0.3.29
0.3.28
0.3.27
0.3.26
0.3.25
0.3.24
0.3.23
0.3.22
0.3.21
0.3.20
0.3.19
0.3.18
0.3.17
0.3.16
0.3.15
0.3.14
0.3.13
0.3.12
0.3.11
0.3.10
0.3.9
0.3.8
0.3.7
0.3.6
0.3.5
0.3.4
0.3.3
0.3.2
0.3.1
0.3.0
0.2.13
0.2.12
0.2.11
0.2.10
0.2.9
0.2.8
0.2.7
0.2.6
0.2.5
0.2.4
0.2.3
0.2.2
0.2.1
0.2.0
0.1.8
0.1.7
0.1.6
0.1.5
0.1.4
0.1.3
0.1.2
0.1.1
0.1.0
A code generation and project patching framework
Current section
Files
Jump to
Current section
Files
lib/igniter/code/tuple.ex
defmodule Igniter.Code.Tuple do
@moduledoc """
Utilities for working with tuples.
"""
alias Igniter.Code.Common
alias Sourceror.Zipper
@doc "Returns `true` if the zipper is at a literal tuple, `false` if not."
@spec tuple?(Zipper.t()) :: boolean()
def tuple?(item) do
item = Igniter.Code.Common.maybe_move_to_single_child_block(item)
case item.node do
{:{}, _, _} -> true
{_, _} -> true
_ -> false
end
end
@doc "Appends `quoted` to the elem"
@spec append_elem(Zipper.t(), quoted :: Macro.t()) :: {:ok, Zipper.t()} | :error
def append_elem(zipper, quoted) do
if tuple?(zipper) do
case zipper.node do
{l, r} ->
{:ok, Zipper.replace(zipper, {:{}, [], [l, r, quoted]})}
{:{}, _, list} ->
{:ok, Zipper.replace(zipper, {:{}, [], list ++ [quoted]})}
end
else
:error
end
end
@spec elem_equals?(Zipper.t(), elem :: non_neg_integer(), value :: term) :: boolean()
def elem_equals?(zipper, elem, value) do
case tuple_elem(zipper, elem) do
{:ok, zipper} ->
Igniter.Code.Common.nodes_equal?(zipper, value)
_ ->
false
end
end
@doc "Returns a zipper at the tuple element at the given index, or `:error` if the index is out of bounds."
@spec tuple_elem(Zipper.t(), elem :: non_neg_integer()) :: {:ok, Zipper.t()} | :error
def tuple_elem(item, elem) do
item
|> Common.maybe_move_to_single_child_block()
|> Zipper.down()
|> Common.nth_right(elem)
|> case do
{:ok, nth} ->
{:ok, Common.maybe_move_to_single_child_block(nth)}
:error ->
:error
end
end
end