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credo
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A static code analysis tool with a focus on code consistency and teaching.
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lib/credo/execution/issues.ex
defmodule Credo.Execution.Issues do
use GenServer
alias Credo.Execution
alias Credo.SourceFile
def start_server(exec) do
{:ok, pid} = GenServer.start_link(__MODULE__, [])
%Execution{exec | issues_pid: pid}
end
@doc "Appends an `issue` for the specified `filename`."
def append(
%Execution{issues_pid: pid},
%SourceFile{filename: filename},
issue
) do
GenServer.call(pid, {:append, filename, issue})
end
@doc "Returns the issues for the specified `filename`."
def get(%Execution{issues_pid: pid}, %SourceFile{filename: filename}) do
GenServer.call(pid, {:get, filename})
end
@doc "Sets/overwrites all `issues` for the given Execution struct."
def set(%Execution{issues_pid: pid}, issues) do
GenServer.call(pid, {:set, issues})
end
@doc "Returns all `issues` for the given Execution struct."
def to_map(%Execution{issues_pid: pid}) do
GenServer.call(pid, :to_map)
end
# callbacks
def init(_) do
{:ok, %{}}
end
def handle_call({:append, filename, issue}, _from, current_state) do
issues = List.wrap(current_state[filename])
new_issue_list = List.wrap(issue) ++ issues
new_current_state = Map.put(current_state, filename, new_issue_list)
{:reply, new_issue_list, new_current_state}
end
def handle_call({:get, filename}, _from, current_state) do
{:reply, List.wrap(current_state[filename]), current_state}
end
def handle_call({:set, issues}, _from, _current_state) do
filenames =
issues
|> Enum.map(& &1.filename)
|> Enum.uniq()
new_current_state =
Enum.reduce(filenames, %{}, fn filename, state ->
new_issue_list = Enum.filter(issues, &(&1.filename == filename))
Map.put(state, filename, new_issue_list)
end)
{:reply, new_current_state, new_current_state}
end
def handle_call(:to_map, _from, current_state) do
{:reply, current_state, current_state}
end
end