Packages
absinthe
1.2.0-alpha.1
1.11.0
1.10.2
1.10.1
1.10.0
1.9.1
1.9.0
1.8.0
1.7.11
1.7.10
1.7.9
1.7.8
1.7.7
1.7.6
1.7.5
1.7.4
1.7.3
1.7.2
1.7.1
1.7.0
1.6.8
1.6.7
retired
1.6.6
1.6.5
1.6.4
1.6.3
1.6.2
1.6.1
1.6.0
1.6.0-rc.1
1.6.0-rc.0
1.5.5
1.5.4
1.5.3
1.5.2
1.5.1
1.5.0
1.5.0-rc.5
1.5.0-rc.4
1.5.0-rc.3
1.5.0-rc.2
1.5.0-rc.1
1.5.0-rc.0
1.5.0-beta.2
1.5.0-beta.1
1.5.0-beta.0
1.5.0-alpha.4
1.5.0-alpha.3
1.5.0-alpha.2
1.5.0-alpha.1
1.5.0-alpha.0
1.4.16
1.4.15
1.4.14
1.4.13
1.4.12
1.4.11
1.4.10
1.4.9
1.4.8
retired
1.4.7
1.4.6
1.4.5
1.4.4
1.4.3
1.4.2
1.4.1
1.4.0
1.4.0-rc.3
1.4.0-rc.2
1.4.0-rc.1
1.4.0-rc.0
1.4.0-beta.5
1.4.0-beta.4
1.4.0-beta.3
1.4.0-beta.2
1.4.0-beta.1
1.3.2
1.3.1
1.3.0
1.3.0-rc.0
1.3.0-beta.2
1.3.0-beta.1
1.3.0-beta.0
1.2.6
1.2.5
1.2.4
1.2.3
1.2.2
1.2.1
1.2.0
1.2.0-rc.0
1.2.0-beta.0
1.2.0-alpha0
1.2.0-alpha.2
1.2.0-alpha.1
1.1.11
1.1.10
1.1.9
1.1.8
1.1.7
1.1.6
1.1.5
1.1.4
1.1.3
1.1.2
1.1.1
1.1.0
1.0.0
0.5.2
0.5.1
0.5.0
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.2.3
0.2.2
0.2.1
0.1.0
GraphQL for Elixir
Current section
Files
Jump to
Current section
Files
lib/absinthe/phase/document/uses.ex
defmodule Absinthe.Phase.Document.Uses do
@moduledoc """
Tracks uses of:
- Variables
- Fragments
"""
use Absinthe.Phase
alias Absinthe.Blueprint
@typep acc_t :: %{
fragments_available: [Blueprint.Document.Fragment.Named.t],
fragments: [Blueprint.Document.Fragment.Named.Use.t],
variables: [Blueprint.Input.Variable.Use.t]
}
@spec run(Blueprint.t, Keyword.t) :: {:ok, Blueprint.t}
def run(input, _options \\ []) do
ops = Enum.map(input.operations, &add_uses(&1, input))
node = %{input | operations: ops}
{:ok, node}
end
@spec add_uses(Blueprint.Document.Operation.t, Blueprint.t) :: Blueprint.Document.Operation.t
defp add_uses(%Blueprint.Document.Operation{} = node, doc) do
acc = %{
fragments_available: doc.fragments,
fragments: [],
variables: [],
}
{_, acc} = Blueprint.prewalk(node, acc, &handle_use/2)
%{
node |
fragment_uses: acc.fragments ++ node.fragment_uses,
variable_uses: acc.variables ++ node.variable_uses
}
end
@spec handle_use(Blueprint.node_t, acc_t) :: {Blueprint.node_t, acc_t}
defp handle_use(%Blueprint.Document.Fragment.Spread{} = node, acc) do
if uses?(acc, node) do
{node, acc}
else
target_fragment = Enum.find(acc.fragments_available, &(&1.name == node.name))
if target_fragment do
acc = acc |> put_use(target_fragment)
{_, acc} = Blueprint.prewalk(target_fragment, acc, &handle_use/2)
{node, acc}
else
{node, acc}
end
end
end
defp handle_use(%Blueprint.Input.Variable{} = node, acc) do
{node, put_use(acc, node)}
end
defp handle_use(node, acc) do
{node, acc}
end
@fragment_types [
Blueprint.Document.Fragment.Named,
Blueprint.Document.Fragment.Spread
]
@spec uses?(acc_t, Blueprint.node_t) :: boolean
defp uses?(acc, %struct{} = node) when struct in @fragment_types do
do_uses?(acc.fragments, node)
end
defp uses?(acc, %Blueprint.Input.Variable{} = node) do
do_uses?(acc.variables, node)
end
@spec do_uses?([Blueprint.use_t], Blueprint.node_t) :: boolean
defp do_uses?(list, node) do
Enum.find(list, &(&1.name == node.name))
end
@spec put_use(acc_t, Blueprint.node_t) :: acc_t
defp put_use(acc, %Blueprint.Input.Variable{} = node) do
ref = Blueprint.Input.Variable.to_use(node)
update_in(acc.variables, &[ref | &1])
end
defp put_use(acc, %Blueprint.Document.Fragment.Named{} = node) do
ref = Blueprint.Document.Fragment.Named.to_use(node)
update_in(acc.fragments, &[ref | &1])
end
end