Tom Hubrecht
50c47c340f
Those are new warnings that come with a more up-to-date llvm Fixes #1066 Co-authored-by: eldritch horrors <pennae@lix.systems> Change-Id: I305d0d810d12a5e8d31c7d89e0cdb3a82df71556
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
#pragma once
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/// @file
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#include "lix/libutil/finally.hh"
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#include "lix/libutil/types.hh"
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#include <functional>
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#include <string>
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namespace nix {
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namespace detail {
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/** Provides the completion hooks for the repl, without exposing its complete
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* internals. */
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struct ReplCompleterMixin {
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virtual StringSet completePrefix(const std::string & prefix) = 0;
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};
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};
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enum class ReplPromptType {
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ReplPrompt,
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ContinuationPrompt,
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};
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class ReplInteracter
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{
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public:
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using Guard = Finally<std::function<void()>>;
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virtual Guard init(detail::ReplCompleterMixin * repl) = 0;
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/** Returns a boolean of whether the interacter got EOF */
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virtual bool getLine(std::string & input, ReplPromptType promptType) = 0;
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virtual ~ReplInteracter(){};
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};
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class ReadlineLikeInteracter final : public ReplInteracter
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{
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std::string historyFile;
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public:
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ReadlineLikeInteracter(std::string historyFile)
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: historyFile(historyFile)
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{
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}
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virtual Guard init(detail::ReplCompleterMixin * repl) override;
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virtual bool getLine(std::string & input, ReplPromptType promptType) override;
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/** Writes the current history to the history file.
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*
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* This function logs but ignores errors from readline's write_history().
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*/
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void writeHistory();
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virtual ~ReadlineLikeInteracter() override;
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};
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class AutomationInteracter final : public ReplInteracter
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{
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public:
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AutomationInteracter() = default;
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virtual Guard init(detail::ReplCompleterMixin * repl) override;
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virtual bool getLine(std::string & input, ReplPromptType promptType) override;
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virtual ~AutomationInteracter() override = default;
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};
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};
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