159 lines
4.6 KiB
C++
159 lines
4.6 KiB
C++
#ifndef command_manager_hh_INCLUDED
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#define command_manager_hh_INCLUDED
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#include "coord.hh"
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#include "completion.hh"
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#include "array_view.hh"
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#include "shell_manager.hh"
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#include "parameters_parser.hh"
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#include "string.hh"
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#include "optional.hh"
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#include "utils.hh"
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#include "hash_map.hh"
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#include <functional>
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#include <initializer_list>
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namespace Kakoune
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{
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class Context;
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using CommandParameters = ConstArrayView<String>;
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using CommandFunc = std::function<void (const ParametersParser& parser,
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Context& context,
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const ShellContext& shell_context)>;
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using CommandCompleter = std::function<Completions (const Context& context,
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CompletionFlags,
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CommandParameters,
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size_t, ByteCount)>;
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using CommandHelper = std::function<String (const Context& context, CommandParameters)>;
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enum class CommandFlags
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{
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None = 0,
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Hidden = 1,
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};
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constexpr bool with_bit_ops(Meta::Type<CommandFlags>) { return true; }
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struct CommandInfo { String name, info; };
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struct Token
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{
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enum class Type
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{
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Raw,
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RawQuoted,
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RawEval,
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ShellExpand,
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RegisterExpand,
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OptionExpand,
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ValExpand,
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ArgExpand,
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CommandSeparator
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};
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Type type;
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ByteCount pos;
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BufferCoord coord;
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String content;
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};
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struct Reader
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{
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public:
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Reader(StringView s) : str{s}, pos{s.begin()}, line_start{s.begin()}, line{} {}
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Codepoint operator*() const;
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Codepoint peek_next() const;
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Reader& operator++();
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explicit operator bool() const { return pos < str.end(); }
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StringView substr_from(const char* start) const { return {start, pos}; }
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BufferCoord coord() const { return {line, (int)(pos - line_start)}; }
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StringView str;
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const char* pos;
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const char* line_start;
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LineCount line;
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};
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class CommandParser
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{
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public:
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CommandParser(StringView command_line);
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Optional<Token> read_token(bool throw_on_unterminated);
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const char* pos() const { return m_reader.pos; }
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BufferCoord coord() const { return m_reader.coord(); }
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bool done() const { return not m_reader; }
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private:
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Reader m_reader;
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};
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class CommandManager : public Singleton<CommandManager>
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{
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public:
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void execute(StringView command_line, Context& context,
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const ShellContext& shell_context = ShellContext{});
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Completions complete(const Context& context, CompletionFlags flags,
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StringView command_line, ByteCount cursor_pos);
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Completions complete(const Context& context, CompletionFlags flags,
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CommandParameters params,
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size_t token_to_complete, ByteCount pos_in_token);
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Optional<CommandInfo> command_info(const Context& context,
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StringView command_line) const;
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bool command_defined(StringView command_name) const;
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void register_command(String command_name, CommandFunc func,
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String docstring,
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ParameterDesc param_desc,
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CommandFlags flags = CommandFlags::None,
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CommandHelper helper = CommandHelper(),
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CommandCompleter completer = CommandCompleter());
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Completions complete_command_name(const Context& context, StringView query) const;
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void clear_last_complete_command() { m_last_complete_command = String{}; }
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private:
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void execute_single_command(CommandParameters params,
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Context& context,
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const ShellContext& shell_context,
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BufferCoord pos);
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struct Command
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{
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CommandFunc func;
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String docstring;
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ParameterDesc param_desc;
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CommandFlags flags;
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CommandHelper helper;
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CommandCompleter completer;
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};
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using CommandMap = HashMap<String, Command, MemoryDomain::Commands>;
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CommandMap m_commands;
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String m_last_complete_command;
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int m_command_depth = 0;
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CommandMap::const_iterator find_command(const Context& context,
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StringView name) const;
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};
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String expand(StringView str, const Context& context,
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const ShellContext& shell_context = ShellContext{});
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String expand(StringView str, const Context& context,
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const ShellContext& shell_context,
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const std::function<String (String)>& postprocess);
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}
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#endif // command_manager_hh_INCLUDED
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