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phoenix
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Productive. Reliable. Fast. A productive web framework that does not compromise speed or maintainability.
Security advisory:
This version has known vulnerabilities.
View advisories
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Files
lib/phoenix/code_reloader/proxy.ex
# A tiny proxy that stores all output sent to the group leader
# while forwarding all requests to it.
defmodule Phoenix.CodeReloader.Proxy do
@moduledoc false
use GenServer
def start() do
GenServer.start(__MODULE__, :ok)
end
def diagnostics(proxy, diagnostics) do
GenServer.cast(proxy, {:diagnostics, diagnostics})
end
def stop(proxy) do
GenServer.call(proxy, :stop, :infinity)
end
## Callbacks
def init(:ok) do
{:ok, []}
end
def handle_cast({:diagnostics, diagnostics}, output) do
{:noreply, diagnostics |> Enum.map(&diagnostic_to_chars/1) |> Enum.reverse(output)}
end
def handle_call(:stop, _from, output) do
{:stop, :normal, Enum.reverse(output), output}
end
def handle_info(msg, output) do
case msg do
{:io_request, from, reply, {:put_chars, chars}} ->
put_chars(from, reply, chars, output)
{:io_request, from, reply, {:put_chars, m, f, as}} ->
put_chars(from, reply, apply(m, f, as), output)
{:io_request, from, reply, {:put_chars, _encoding, chars}} ->
put_chars(from, reply, chars, output)
{:io_request, from, reply, {:put_chars, _encoding, m, f, as}} ->
put_chars(from, reply, apply(m, f, as), output)
{:io_request, _from, _reply, _request} = msg ->
send(Process.group_leader(), msg)
{:noreply, output}
_ ->
{:noreply, output}
end
end
defp put_chars(from, reply, chars, output) do
send(Process.group_leader(), {:io_request, from, reply, {:put_chars, chars}})
{:noreply, [chars | output]}
end
defp diagnostic_to_chars(%{severity: :error, message: "**" <> _ = message}) do
"\n#{message}\n"
end
defp diagnostic_to_chars(%{severity: severity, message: message, file: file, position: position}) do
"\n#{severity}: #{message}\n #{Path.relative_to_cwd(file)}#{position(position)}\n"
end
defp position({line, col}), do: ":#{line}:#{col}"
defp position(line) when is_integer(line) and line > 0, do: ":#{line}"
defp position(_), do: ""
end