gri3-wm/include/commands_parser.h

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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
*
* commands.c: all command functions (see commands_parser.c)
*
*/
#pragma once
#include <yajl/yajl_gen.h>
/*
* Holds an intermediate represenation of the result of a call to any command.
* When calling parse_command("floating enable, border none"), the parser will
* internally use this struct when calling cmd_floating and cmd_border.
*/
struct CommandResultIR {
/* The JSON generator to append a reply to (may be NULL). */
yajl_gen json_gen;
/* The next state to transition to. Passed to the function so that we can
* determine the next state as a result of a function call, like
* cfg_criteria_pop_state() does. */
int next_state;
/* Whether the command requires calling tree_render. */
bool needs_tree_render;
};
typedef struct CommandResult CommandResult;
/**
* A struct that contains useful information about the result of a command as a
* whole (e.g. a compound command like "floating enable, border none").
* needs_tree_render is true if needs_tree_render of any individual command was
* true.
*/
struct CommandResult {
bool parse_error;
/* the error_message is currently only set for parse errors */
char *error_message;
bool needs_tree_render;
};
/**
* Parses and executes the given command. If a caller-allocated yajl_gen is
* passed, a json reply will be generated in the format specified by the ipc
* protocol. Pass NULL if no json reply is required.
*
* Free the returned CommandResult with command_result_free().
*/
CommandResult *parse_command(const char *input, yajl_gen gen);
/**
* Frees a CommandResult
*/
void command_result_free(CommandResult *result);