e4f62e4608
* It is tough to contribute to a project that doesn't use a formatter, * It is extra hard to contribute to a project which has configured the formatter, but ignores it for some files * Code formatting makes it harder to hide obscure / weird bugs by accident or on purpose, Let's rip the bandaid off? Note that PRs currently in flight should be able to be merged relatively easily by applying `clang-format` to their tip prior to merge.
51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
#pragma once
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/// @file
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#include "nix/util/finally.hh"
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#include "nix/util/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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{
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virtual StringSet completePrefix(const std::string & prefix) = 0;
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};
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}; // namespace detail
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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 : public virtual 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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virtual ~ReadlineLikeInteracter() override;
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};
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}; // namespace nix
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