feat(Flag Dependency): Evaluate flags that depend on other flags in local evaluation

.github/workflows/sdk-spec.yml

@@ -11,7 +11,8 @@ permissions:
 jobs:
   sdk-spec:
     # Keep the ref in `uses:` and `spec-ref` in sync.
-    uses: Flagsmith/sdk-spec/.github/workflows/run-spec.yml@v0.3.0
+    uses: Flagsmith/sdk-spec/.github/workflows/run-spec.yml@v0.7.1
     with:
-      spec-ref: v0.3.0
+      spec-ref: v0.7.1
       language: elixir
+      tags: core or local-evaluation

.gitmodules

@@ -1,7 +1,7 @@
 [submodule "test/support/engine-test-data"]
 	path = test/support/engine-test-data
-	url = git@github.com:Flagsmith/engine-test-data.git
-	branch = v1.0.0
+	url = https://github.com/Flagsmith/engine-test-data.git
+	branch = v3.12.1
 [submodule "test/support/sdk-benchmarks"]
 	path = test/support/sdk-benchmarks
 	url = https://github.com/Flagsmith/sdk-benchmarks.git

lib/engine/evaluation_result.ex

@@ -0,0 +1,15 @@
+defmodule Flagsmith.Engine.EvaluationResult do
+  @moduledoc false
+
+  # as specified by https://github.com/Flagsmith/flagsmith/blob/main/sdk/evaluation-result.json
+
+  alias __MODULE__.{FlagResult, SegmentResult}
+
+  @enforce_keys [:flags, :segments]
+  defstruct @enforce_keys
+
+  @type t :: %__MODULE__{
+          flags: %{String.t() => FlagResult.t()},
+          segments: list(SegmentResult.t())
+        }
+end

lib/engine/evaluation_result/flag_result.ex

@@ -0,0 +1,15 @@
+defmodule Flagsmith.Engine.EvaluationResult.FlagResult do
+  @moduledoc false
+
+  @enforce_keys [:name, :enabled, :value, :reason, :variant]
+  defstruct @enforce_keys ++ [metadata: nil]
+
+  @type t :: %__MODULE__{
+          name: String.t(),
+          enabled: boolean(),
+          value: String.t() | number() | boolean() | nil,
+          reason: String.t(),
+          variant: String.t() | nil,
+          metadata: map() | nil
+        }
+end

lib/engine/evaluation_result/segment_result.ex

@@ -0,0 +1,11 @@
+defmodule Flagsmith.Engine.EvaluationResult.SegmentResult do
+  @moduledoc false
+
+  @enforce_keys [:name]
+  defstruct @enforce_keys ++ [metadata: nil]
+
+  @type t :: %__MODULE__{
+          name: String.t(),
+          metadata: map() | nil
+        }
+end