import Codex.KinoHelpers{:ok, pid} = Entrace.start_link()
Entrace.trace_cluster(pid, {Play, :add, 2}, &IO.inspect/1)# this was not working
Codex.KinoHelpers.trace({Play, :add, 2})
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September 8, 2024 18:56
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| {:ok, pid} = Entrace.start_link() | |
| Entrace.trace_cluster(pid, {Play, :add, 2}, &IO.inspect/1) |
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| defmodule Codex.KinoHelpers do | |
| def trace(mfa) do | |
| {:ok, tracer} = Entrace.start_link() | |
| trace_frame = Kino.Frame.new() | |
| trace(tracer, trace_frame, mfa) | |
| trace_frame | |
| end | |
| def trace(tracer, trace_frame, mfa) do | |
| Entrace.stop(tracer, mfa) | |
| Entrace.trace(tracer, mfa, fn %Entrace.Trace{} = t -> | |
| IO.inspect(t) | |
| {_mod, _fun, args} = t.mfa | |
| [stack_item | _rest] = t.stacktrace | |
| columns = [ | |
| Kino.Text.new(format_stacktrace_item(stack_item)), | |
| Kino.Tree.new(args) | |
| ] | |
| columns = | |
| if t.returned_at != nil do | |
| {:return, ret} = t.return_value | |
| columns ++ [format_return(ret)] | |
| else | |
| columns | |
| end | |
| stack = | |
| for {mod, fun, arity, [file: _file, line: _line]} <- t.stacktrace do | |
| [func: format_mfa({mod, fun, arity})] | |
| end | |
| Kino.Frame.append( | |
| trace_frame, | |
| Kino.Layout.tabs( | |
| Summary: Kino.Layout.grid(columns, columns: Enum.count(columns)), | |
| Stacktrace: Kino.DataTable.new(stack) | |
| ) | |
| ) | |
| end) | |
| end | |
| def format_stacktrace_item({:elixir, :eval_external_handler, _, _}) do | |
| "(eval)" | |
| end | |
| def format_stacktrace_item({mod, fun, arity, [file: file, line: line]}) do | |
| format_mfa({mod, fun, arity}) <> " " <> "#{file}:#{line}" | |
| end | |
| def format_mfa({mod, fun, arity}) do | |
| "Elixir." <> mod_name = Atom.to_string(mod) | |
| "&#{mod_name}.#{fun}/#{arity}" | |
| end | |
| def format_mfa(bad_mfa) do | |
| inspect(bad_mfa) | |
| end | |
| defp format_return(v) when is_binary(v) or is_number(v) or is_atom(v) do | |
| Kino.Inspect.new(v) | |
| end | |
| defp format_return(v) do | |
| Kino.Tree.new(v) | |
| end | |
| end |
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