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reach

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reach lib reach inspect context.ex
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lib/reach/inspect/context.ex 

defmodule Reach.Inspect.Context do

  @moduledoc """

  Builds agent-readable context bundles for a single target function.

  """



  alias Reach.Effects

  alias Reach.Inspect.Data

  alias Reach.IR

  alias Reach.Project.Query



  def build(project, mfa, func, opts \\ []) do

    configured_depth = opts[:depth]

    depth = configured_depth || 3

    direct_callers = Query.callers(project, mfa, 1)



    %{

      target: mfa,

      location: location(func),

      effects: effects(func),

      deps: %{

        callers: direct_callers,

        callees: Query.callees(project, mfa, depth)

      },

      impact: %{

        direct_callers: direct_callers,

        transitive_callers: Query.callers(project, mfa, configured_depth || 4)

      },

      data: Data.summary(project, func, opts[:variable])

    }

  end



  def location(func) do

    span = func.source_span || %{}

    %{file: span[:file], line: span[:start_line]}

  end



  def effects(func) do

    func

    |> IR.all_nodes()

    |> Enum.map(&Effects.classify/1)

    |> Enum.uniq()

    |> Enum.sort()

    |> Enum.map(&to_string/1)

  end

end