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html_to_markdown
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2.8.3
High-performance HTML to Markdown converter
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lib/html_to_markdown/html_visitor_bridge.ex
defmodule HtmlToMarkdownHtmlVisitorBridge do
@moduledoc """
GenServer bridge for HtmlVisitor implementation in html_to_markdown.
Handles incoming trait method calls from Rust and dispatches them to an implementation module.
"""
use GenServer
require Logger
@doc """
Start a GenServer linked to the current process.
impl_module should be a module that implements the HtmlVisitor trait methods.
"""
def start_link(impl_module) do
GenServer.start_link(__MODULE__, impl_module, name: __MODULE__)
end
@impl GenServer
def init(impl_module) do
{:ok, impl_module}
end
@doc """
Handle an incoming trait call message.
Message format: {:trait_call, method_atom, args_json, reply_id}
"""
@impl GenServer
def handle_info({:trait_call, method, args_json, reply_id}, impl_module) do
try do
args = Jason.decode!(args_json)
# Dispatch to the implementation module
result = apply(impl_module, String.to_atom(method), args)
# Send result back to Rust
HtmlToMarkdown.Native.complete_trait_call(reply_id, Jason.encode!(result))
rescue
e ->
Logger.error("Error calling {impl_module}.{method}: {Exception.message(e)}")
HtmlToMarkdown.Native.fail_trait_call(reply_id, Exception.message(e))
end
{:noreply, impl_module}
end
@doc """
Register an implementation module, starting a GenServer to handle trait calls.
"""
def register(impl_module) do
{:ok, _pid} = start_link(impl_module)
HtmlToMarkdown.Native.register_html_visitor(self(), Atom.to_string(impl_module))
end
end