106 lines
3.3 KiB
C++
106 lines
3.3 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 "memoryview.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 "utils.hh"
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#include <unordered_map>
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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 = memoryview<String>;
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using Command = std::function<void (const ParametersParser& parser, Context& 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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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 CommandFlags operator|(CommandFlags lhs, CommandFlags rhs)
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{
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return (CommandFlags)((int)lhs | (int)rhs);
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}
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constexpr bool operator&(CommandFlags lhs, CommandFlags rhs)
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{
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return (bool)((int)lhs & (int)rhs);
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}
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class PerArgumentCommandCompleter
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{
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public:
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using ArgumentCompleter = std::function<Completions (const Context&,
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CompletionFlags flags,
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const String&, ByteCount)>;
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using ArgumentCompleterList = memoryview<ArgumentCompleter>;
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PerArgumentCommandCompleter(ArgumentCompleterList completers)
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: m_completers(completers.begin(), completers.end()) {}
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Completions operator()(const Context& context,
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CompletionFlags flags,
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CommandParameters params,
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size_t token_to_complete,
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ByteCount pos_in_token) const;
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private:
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std::vector<ArgumentCompleter> m_completers;
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};
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using CommandInfo = std::pair<String, String>;
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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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memoryview<String> shell_params = {},
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const EnvVarMap& env_vars = EnvVarMap{});
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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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CommandInfo command_info(StringView command_line) const;
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bool command_defined(const String& command_name) const;
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void register_command(String command_name, Command command,
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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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CommandCompleter completer = CommandCompleter());
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void register_alias(String alias, String command);
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private:
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void execute_single_command(CommandParameters params,
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Context& context, CharCoord pos) const;
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struct CommandDescriptor
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{
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Command command;
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String docstring;
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ParameterDesc param_desc;
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CommandFlags flags;
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CommandCompleter completer;
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};
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using CommandMap = std::unordered_map<String, CommandDescriptor>;
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CommandMap m_commands;
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std::unordered_map<String, String> m_aliases;
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CommandMap::const_iterator find_command(const String& name) const;
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};
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}
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#endif // command_manager_hh_INCLUDED
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