Rip out the old command parser, remove migration code

This commit is contained in:
Michael Stapelberg 2012-01-27 22:11:03 +00:00
parent 76ad5dac63
commit 3229f7677f
9 changed files with 22 additions and 1094 deletions

View File

@ -3,7 +3,7 @@ TOPDIR=$(shell pwd)
include $(TOPDIR)/common.mk
# Depend on the object files of all source-files in src/*.c and on all header files
AUTOGENERATED:=src/cfgparse.tab.c src/cfgparse.yy.c src/cmdparse.tab.c src/cmdparse.yy.c
AUTOGENERATED:=src/cfgparse.tab.c src/cfgparse.yy.c
FILES:=$(filter-out $(AUTOGENERATED),$(wildcard src/*.c))
FILES:=$(FILES:.c=.o)
HEADERS:=$(filter-out include/loglevels.h,$(wildcard include/*.h))
@ -28,7 +28,7 @@ src/%.o: src/%.c ${HEADERS}
all: i3 subdirs
i3: libi3/libi3.a src/cfgparse.y.o src/cfgparse.yy.o src/cmdparse.y.o src/cmdparse.yy.o ${FILES}
i3: libi3/libi3.a src/cfgparse.y.o src/cfgparse.yy.o ${FILES}
echo "[i3] LINK i3"
$(CC) $(LDFLAGS) -o $@ $(filter-out libi3/libi3.a,$^) $(LIBS)
@ -75,22 +75,12 @@ src/cfgparse.yy.o: src/cfgparse.l src/cfgparse.y.o ${HEADERS}
$(FLEX) -i -o$(@:.o=.c) $<
$(CC) $(CPPFLAGS) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cfgparse.l/ { print NR }' loglevels.tmp))" -c -o $@ $(@:.o=.c)
src/cmdparse.yy.o: src/cmdparse.l src/cmdparse.y.o ${HEADERS}
echo "[i3] LEX $<"
$(FLEX) -Pcmdyy -i -o$(@:.o=.c) $<
$(CC) $(CPPFLAGS) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cmdparse.l/ { print NR }' loglevels.tmp))" -c -o $@ $(@:.o=.c)
src/cfgparse.y.o: src/cfgparse.y ${HEADERS}
echo "[i3] YACC $<"
$(BISON) --debug --verbose -b $(basename $< .y) -d $<
$(CC) $(CPPFLAGS) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cfgparse.y/ { print NR }' loglevels.tmp))" -c -o $@ $(<:.y=.tab.c)
src/cmdparse.y.o: src/cmdparse.y ${HEADERS}
echo "[i3] YACC $<"
$(BISON) -p cmdyy --debug --verbose -b $(basename $< .y) -d $<
$(CC) $(CPPFLAGS) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cmdparse.y/ { print NR }' loglevels.tmp))" -c -o $@ $(<:.y=.tab.c)
install: all
echo "[i3] INSTALL"
@ -140,7 +130,7 @@ dist: distclean
rm -rf i3-${VERSION}
clean:
rm -f src/*.o src/*.gcno src/cfgparse.tab.{c,h} src/cfgparse.yy.c src/cfgparse.{output,dot} src/cmdparse.tab.{c,h} src/cmdparse.yy.c src/cmdparse.{output,dot} loglevels.tmp include/loglevels.h include/GENERATED_*
rm -f src/*.o src/*.gcno src/cfgparse.tab.{c,h} src/cfgparse.yy.c src/cfgparse.{output,dot} loglevels.tmp include/loglevels.h include/GENERATED_*
(which lcov >/dev/null 2>&1 && lcov -d . --zerocounters) || true
$(MAKE) -C libi3 clean
$(MAKE) -C docs clean

View File

@ -22,12 +22,6 @@ typedef struct owindow {
typedef TAILQ_HEAD(owindows_head, owindow) owindows_head;
void cmd_MIGRATION_enable();
void cmd_MIGRATION_disable();
void cmd_MIGRATION_save_new_parameters(Match *current_match, ...);
void cmd_MIGRATION_save_old_parameters(Match *current_match, ...);
void cmd_MIGRATION_validate();
char *cmd_criteria_init(Match *current_match);
char *cmd_criteria_match_windows(Match *current_match);
char *cmd_criteria_add(Match *current_match, char *ctype, char *cvalue);

View File

@ -2,7 +2,7 @@
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
*
* assignments.c: Assignments for specific windows (for_window).
*
@ -41,7 +41,7 @@ void run_assignments(i3Window *window) {
DLOG("execute command %s\n", current->dest.command);
char *full_command;
sasprintf(&full_command, "[id=\"%d\"] %s", window->id, current->dest.command);
char *json_result = parse_cmd(full_command);
char *json_result = parse_command(full_command);
FREE(full_command);
FREE(json_result);
}

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@ -1,214 +0,0 @@
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
* cmdparse.l: the lexer for commands you send to i3 (or bind on keys)
*
*/
%option nounput
%option noinput
%option noyy_top_state
%option stack
%{
#include <stdio.h>
#include <string.h>
#include "cmdparse.tab.h"
#include "config.h"
#include "util.h"
#include "libi3.h"
int cmdyycolumn = 1;
#define YY_DECL int yylex (struct context *context)
#define YY_USER_ACTION { \
context->first_column = cmdyycolumn; \
context->last_column = cmdyycolumn+yyleng-1; \
cmdyycolumn += yyleng; \
}
/* macro to first eat whitespace, then expect a string */
#define WS_STRING do { \
yy_push_state(WANT_STRING); \
yy_push_state(EAT_WHITESPACE); \
} while (0)
%}
EOL (\r?\n)
/* handle everything up to \n as a string */
%s WANT_STRING
/* eat a whitespace, then go to the next state on the stack */
%s EAT_WHITESPACE
/* handle a quoted string or everything up to the next whitespace */
%s WANT_QSTRING
%x MOVE
%x MOVE_WS
%x EXEC
%x BUFFER_LINE
%%
{
/* This is called when a new line is lexed. We only want the
* first line to match to go into state BUFFER_LINE */
if (context->line_number == 0) {
context->line_number = 1;
BEGIN(INITIAL);
yy_push_state(BUFFER_LINE);
}
}
<BUFFER_LINE>^[^\r\n]*/{EOL}? {
/* save whole line */
context->line_copy = sstrdup(yytext);
yyless(0);
yy_pop_state();
yy_set_bol(true);
cmdyycolumn = 1;
}
/* The next/prev/back_and_forth tokens are here to recognize them *before*
* handling strings ('workspace' command). While flex uses the longest
* match, in case of a tie the order of rules becomes relevant. Since the
* input is fully consumed (these are the last tokens), it comes to a tie.
* */
next { BEGIN(INITIAL); return TOK_NEXT; }
prev { BEGIN(INITIAL); return TOK_PREV; }
next_on_output { BEGIN(INITIAL); return TOK_NEXT_ON_OUTPUT; }
prev_on_output { BEGIN(INITIAL); return TOK_PREV_ON_OUTPUT; }
back_and_forth { BEGIN(INITIAL); return TOK_BACK_AND_FORTH; }
/* MOVE is the state after a 'move' token was processed. We need this state
* to skip some tokens (for making the commands clearer) and to properly
* move to the MOVE_WS state. */
<MOVE>to { /* eat this token */ }
<MOVE>window { /* eat this token */ }
<MOVE>container { /* eat this token */ }
<MOVE>workspace { yy_pop_state(); yy_push_state(MOVE_WS); yy_push_state(EAT_WHITESPACE); return TOK_WORKSPACE; }
<MOVE>scratchpad { yy_pop_state(); return TOK_SCRATCHPAD; }
<MOVE>output { yy_pop_state(); return TOK_OUTPUT; }
<MOVE>up { yy_pop_state(); return TOK_UP; }
<MOVE>down { yy_pop_state(); return TOK_DOWN; }
<MOVE>left { yy_pop_state(); return TOK_LEFT; }
<MOVE>right { yy_pop_state(); return TOK_RIGHT; }
/* MOVE_WS is the state after a 'workspace' token was processed in the MOVE
* state. We need a separate state to deal with the fact that the old
* 'move workspace <ws>' command needs to be supported (the new command is
* 'move to workspace') while we also need to support
* 'move workspace to output <output>'. */
<MOVE_WS>to { yy_pop_state(); return TOK_TO; }
<MOVE_WS>[^t] { yy_pop_state(); yy_push_state(WANT_STRING); yyless(0); }
<WANT_STRING>\"[^\"]+\" {
BEGIN(INITIAL);
/* strip quotes */
char *copy = sstrdup(yytext+1);
copy[strlen(copy)-1] = '\0';
cmdyylval.string = copy;
return STR;
}
<WANT_QSTRING>\"[^\"]+\" {
BEGIN(INITIAL);
/* strip quotes */
char *copy = sstrdup(yytext+1);
copy[strlen(copy)-1] = '\0';
cmdyylval.string = copy;
return STR;
}
<WANT_STRING>[^;\n]+ { BEGIN(INITIAL); cmdyylval.string = sstrdup(yytext); return STR; }
<EAT_WHITESPACE>[;\n] { BEGIN(INITIAL); return ';'; }
<EAT_WHITESPACE>[ \t]* { yy_pop_state(); }
[ \t]* { /* ignore whitespace */ ; }
<EXEC>--no-startup-id { printf("no startup id\n"); yy_pop_state(); return TOK_NO_STARTUP_ID; }
<EXEC>. { printf("anything else: *%s*\n", yytext); yyless(0); yy_pop_state(); yy_pop_state(); }
exec { WS_STRING; yy_push_state(EXEC); yy_push_state(EAT_WHITESPACE); return TOK_EXEC; }
exit { return TOK_EXIT; }
reload { return TOK_RELOAD; }
restart { return TOK_RESTART; }
kill { return TOK_KILL; }
window { return TOK_WINDOW; }
container { return TOK_CONTAINER; }
client { return TOK_CLIENT; }
fullscreen { return TOK_FULLSCREEN; }
global { return TOK_GLOBAL; }
layout { return TOK_LAYOUT; }
default { return TOK_DEFAULT; }
stacked { return TOK_STACKED; }
stacking { return TOK_STACKED; }
tabbed { return TOK_TABBED; }
border { return TOK_BORDER; }
normal { return TOK_NORMAL; }
none { return TOK_NONE; }
1pixel { return TOK_1PIXEL; }
mode { BEGIN(WANT_QSTRING); return TOK_MODE; }
tiling { return TOK_TILING; }
floating { return TOK_FLOATING; }
toggle { return TOK_TOGGLE; }
mode_toggle { return TOK_MODE_TOGGLE; }
workspace { WS_STRING; return TOK_WORKSPACE; }
output { WS_STRING; return TOK_OUTPUT; }
focus { return TOK_FOCUS; }
move { yy_push_state(MOVE); return TOK_MOVE; }
open { return TOK_OPEN; }
scratchpad { return TOK_SCRATCHPAD; }
show { return TOK_SHOW; }
split { return TOK_SPLIT; }
horizontal { return TOK_HORIZONTAL; }
vertical { return TOK_VERTICAL; }
up { return TOK_UP; }
down { return TOK_DOWN; }
left { return TOK_LEFT; }
right { return TOK_RIGHT; }
parent { return TOK_PARENT; }
child { return TOK_CHILD; }
resize { return TOK_RESIZE; }
shrink { return TOK_SHRINK; }
grow { return TOK_GROW; }
px { return TOK_PX; }
or { return TOK_OR; }
ppt { return TOK_PPT; }
to { return TOK_TO; }
nop { WS_STRING; return TOK_NOP; }
append_layout { WS_STRING; return TOK_APPEND_LAYOUT; }
mark { WS_STRING; return TOK_MARK; }
enable { return TOK_ENABLE; }
true { return TOK_ENABLE; }
yes { return TOK_ENABLE; }
disable { return TOK_DISABLE; }
false { return TOK_DISABLE; }
no { return TOK_DISABLE; }
class { BEGIN(WANT_QSTRING); return TOK_CLASS; }
instance { BEGIN(WANT_QSTRING); return TOK_INSTANCE; }
window_role { BEGIN(WANT_QSTRING); return TOK_WINDOW_ROLE; }
id { BEGIN(WANT_QSTRING); return TOK_ID; }
con_id { BEGIN(WANT_QSTRING); return TOK_CON_ID; }
con_mark { BEGIN(WANT_QSTRING); return TOK_MARK; }
title { BEGIN(WANT_QSTRING); return TOK_TITLE; }
[0-9]+ { cmdyylval.number = atoi(yytext); return NUMBER; }
. { return (int)yytext[0]; }
<<EOF>> {
while (yy_start_stack_ptr > 0)
yy_pop_state();
yyterminate();
}
%%

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@ -1,626 +0,0 @@
%{
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
*
* cmdparse.y: the parser for commands you send to i3 (or bind on keys)
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <float.h>
#include "all.h"
typedef struct yy_buffer_state *YY_BUFFER_STATE;
extern int cmdyylex(struct context *context);
extern int cmdyyparse(void);
extern int cmdyylex_destroy(void);
extern FILE *cmdyyin;
YY_BUFFER_STATE cmdyy_scan_string(const char *);
static struct context *context;
static Match current_match;
/* Holds the JSON which will be returned via IPC or NULL for the default return
* message */
static char *json_output;
/* We dont need yydebug for now, as we got decent error messages using
* yyerror(). Should you ever want to extend the parser, it might be handy
* to just comment it in again, so it stays here. */
//int cmdyydebug = 1;
void cmdyyerror(const char *error_message) {
ELOG("\n");
ELOG("CMD: %s\n", error_message);
ELOG("CMD: in command:\n");
ELOG("CMD: %s\n", context->line_copy);
ELOG("CMD: ");
for (int c = 1; c <= context->last_column; c++)
if (c >= context->first_column)
printf("^");
else printf(" ");
printf("\n");
ELOG("\n");
context->compact_error = sstrdup(error_message);
}
int cmdyywrap() {
return 1;
}
char *parse_cmd(const char *new) {
cmd_MIGRATION_enable();
char *output = parse_command(new);
if (output != NULL) {
printf("MIGRATION: new output != NULL: %s\n", output);
free(output);
}
cmd_MIGRATION_disable();
json_output = NULL;
LOG("COMMAND: *%s*\n", new);
cmdyy_scan_string(new);
cmd_criteria_init(&current_match);
context = scalloc(sizeof(struct context));
context->filename = "cmd";
if (cmdyyparse() != 0) {
fprintf(stderr, "Could not parse command\n");
sasprintf(&json_output, "{\"success\":false, \"error\":\"%s at position %d\"}",
context->compact_error, context->first_column);
FREE(context->line_copy);
FREE(context->compact_error);
free(context);
return json_output;
}
printf("done, json output = %s\n", json_output);
cmd_MIGRATION_validate();
cmdyylex_destroy();
FREE(context->line_copy);
FREE(context->compact_error);
free(context);
return json_output;
}
%}
%error-verbose
%lex-param { struct context *context }
%union {
char *string;
char chr;
int number;
}
%token TOK_EXEC "exec"
%token TOK_EXIT "exit"
%token TOK_RELOAD "reload"
%token TOK_RESTART "restart"
%token TOK_KILL "kill"
%token TOK_WINDOW "window"
%token TOK_CONTAINER "container"
%token TOK_CLIENT "client"
%token TOK_FULLSCREEN "fullscreen"
%token TOK_GLOBAL "global"
%token TOK_LAYOUT "layout"
%token TOK_DEFAULT "default"
%token TOK_STACKED "stacked"
%token TOK_TABBED "tabbed"
%token TOK_BORDER "border"
%token TOK_NORMAL "normal"
%token TOK_NONE "none"
%token TOK_1PIXEL "1pixel"
%token TOK_MODE "mode"
%token TOK_TILING "tiling"
%token TOK_FLOATING "floating"
%token TOK_MODE_TOGGLE "mode_toggle"
%token TOK_ENABLE "enable"
%token TOK_DISABLE "disable"
%token TOK_WORKSPACE "workspace"
%token TOK_OUTPUT "output"
%token TOK_TOGGLE "toggle"
%token TOK_FOCUS "focus"
%token TOK_MOVE "move"
%token TOK_OPEN "open"
%token TOK_NEXT "next"
%token TOK_PREV "prev"
%token TOK_NEXT_ON_OUTPUT "next_on_output"
%token TOK_PREV_ON_OUTPUT "prev_on_output"
%token TOK_SCRATCHPAD "scratchpad"
%token TOK_SHOW "show"
%token TOK_SPLIT "split"
%token TOK_HORIZONTAL "horizontal"
%token TOK_VERTICAL "vertical"
%token TOK_UP "up"
%token TOK_DOWN "down"
%token TOK_LEFT "left"
%token TOK_RIGHT "right"
%token TOK_PARENT "parent"
%token TOK_CHILD "child"
%token TOK_APPEND_LAYOUT "append_layout"
%token TOK_MARK "mark"
%token TOK_RESIZE "resize"
%token TOK_GROW "grow"
%token TOK_SHRINK "shrink"
%token TOK_PX "px"
%token TOK_OR "or"
%token TOK_PPT "ppt"
%token TOK_NOP "nop"
%token TOK_BACK_AND_FORTH "back_and_forth"
%token TOK_NO_STARTUP_ID "--no-startup-id"
%token TOK_TO "to"
%token TOK_CLASS "class"
%token TOK_INSTANCE "instance"
%token TOK_WINDOW_ROLE "window_role"
%token TOK_ID "id"
%token TOK_CON_ID "con_id"
%token TOK_TITLE "title"
%token <string> STR "<string>"
%token <number> NUMBER "<number>"
%type <number> direction
%type <number> split_direction
%type <number> fullscreen_mode
%type <number> level
%type <number> window_mode
%type <number> boolean
%type <number> border_style
%type <number> layout_mode
%type <number> resize_px
%type <number> resize_way
%type <number> resize_tiling
%type <number> optional_kill_mode
%type <number> optional_no_startup_id
%%
commands:
commands ';' command
| command
{
cmd_criteria_init(&current_match);
}
;
command:
match operations
;
match:
| matchstart criteria matchend
;
matchstart:
'['
;
matchend:
']'
{
json_output = cmd_criteria_match_windows(&current_match);
}
;
criteria:
criteria criterion
| criterion
;
criterion:
TOK_CLASS '=' STR
{
cmd_criteria_add(&current_match, "class", $3);
free($3);
}
| TOK_INSTANCE '=' STR
{
cmd_criteria_add(&current_match, "instance", $3);
free($3);
}
| TOK_WINDOW_ROLE '=' STR
{
cmd_criteria_add(&current_match, "window_role", $3);
free($3);
}
| TOK_CON_ID '=' STR
{
cmd_criteria_add(&current_match, "con_id", $3);
free($3);
}
| TOK_ID '=' STR
{
cmd_criteria_add(&current_match, "id", $3);
free($3);
}
| TOK_MARK '=' STR
{
cmd_criteria_add(&current_match, "con_mark", $3);
free($3);
}
| TOK_TITLE '=' STR
{
cmd_criteria_add(&current_match, "title", $3);
free($3);
}
;
operations:
operation
| operations ',' operation
;
operation:
exec
| exit
| restart
| reload
| border
| layout
| append_layout
| move
| workspace
| focus
| kill
| open
| fullscreen
| split
| floating
| mark
| resize
| nop
| scratchpad
| mode
;
exec:
TOK_EXEC optional_no_startup_id STR
{
json_output = cmd_exec(&current_match, ($2 ? "--no-startup-id" : NULL), $3);
free($3);
}
;
optional_no_startup_id:
/* empty */ { $$ = false; }
| TOK_NO_STARTUP_ID { $$ = true; }
;
exit:
TOK_EXIT
{
json_output = cmd_exit(&current_match);
}
;
reload:
TOK_RELOAD
{
json_output = cmd_reload(&current_match);
}
;
restart:
TOK_RESTART
{
json_output = cmd_restart(&current_match);
}
;
focus:
TOK_FOCUS
{
json_output = cmd_focus(&current_match);
}
| TOK_FOCUS direction
{
json_output = cmd_focus_direction(&current_match,
($2 == TOK_LEFT ? "left" :
($2 == TOK_RIGHT ? "right" :
($2 == TOK_UP ? "up" :
"down"))));
}
| TOK_FOCUS TOK_OUTPUT STR
{
json_output = cmd_focus_output(&current_match, $3);
free($3);
}
| TOK_FOCUS window_mode
{
json_output = cmd_focus_window_mode(&current_match,
($2 == TOK_TILING ? "tiling" :
($2 == TOK_FLOATING ? "floating" :
"mode_toggle")));
}
| TOK_FOCUS level
{
json_output = cmd_focus_level(&current_match, ($2 == TOK_PARENT ? "parent" : "child"));
}
;
window_mode:
TOK_TILING { $$ = TOK_TILING; }
| TOK_FLOATING { $$ = TOK_FLOATING; }
| TOK_MODE_TOGGLE { $$ = TOK_MODE_TOGGLE; }
;
level:
TOK_PARENT { $$ = TOK_PARENT; }
| TOK_CHILD { $$ = TOK_CHILD; }
;
kill:
TOK_KILL optional_kill_mode
{
json_output = cmd_kill(&current_match, ($2 == KILL_WINDOW ? "window" : "client"));
}
;
optional_kill_mode:
/* empty */ { $$ = KILL_WINDOW; }
| TOK_WINDOW { $$ = KILL_WINDOW; }
| TOK_CLIENT { $$ = KILL_CLIENT; }
;
workspace:
TOK_WORKSPACE TOK_NEXT
{
json_output = cmd_workspace(&current_match, "next");
}
| TOK_WORKSPACE TOK_PREV
{
json_output = cmd_workspace(&current_match, "prev");
}
| TOK_WORKSPACE TOK_NEXT_ON_OUTPUT
{
json_output = cmd_workspace(&current_match, "next_on_output");
}
| TOK_WORKSPACE TOK_PREV_ON_OUTPUT
{
json_output = cmd_workspace(&current_match, "prev_on_output");
}
| TOK_WORKSPACE TOK_BACK_AND_FORTH
{
json_output = cmd_workspace_back_and_forth(&current_match);
}
| TOK_WORKSPACE STR
{
json_output = cmd_workspace_name(&current_match, $2);
free($2);
}
;
open:
TOK_OPEN
{
json_output = cmd_open(&current_match);
}
;
fullscreen:
TOK_FULLSCREEN fullscreen_mode
{
json_output = cmd_fullscreen(&current_match, ($2 == CF_OUTPUT ? "output" : "global"));
}
;
fullscreen_mode:
/* empty */ { $$ = CF_OUTPUT; }
| TOK_GLOBAL { $$ = CF_GLOBAL; }
;
split:
TOK_SPLIT split_direction
{
char buf[2] = {'\0', '\0'};
buf[0] = $2;
json_output = cmd_split(&current_match, buf);
}
;
split_direction:
TOK_HORIZONTAL { $$ = 'h'; }
| 'h' { $$ = 'h'; }
| TOK_VERTICAL { $$ = 'v'; }
| 'v' { $$ = 'v'; }
;
floating:
TOK_FLOATING boolean
{
json_output = cmd_floating(&current_match,
($2 == TOK_ENABLE ? "enable" :
($2 == TOK_DISABLE ? "disable" :
"toggle")));
}
;
boolean:
TOK_ENABLE { $$ = TOK_ENABLE; }
| TOK_DISABLE { $$ = TOK_DISABLE; }
| TOK_TOGGLE { $$ = TOK_TOGGLE; }
;
border:
TOK_BORDER border_style
{
json_output = cmd_border(&current_match,
($2 == BS_NORMAL ? "normal" :
($2 == BS_NONE ? "none" :
($2 == BS_1PIXEL ? "1pixel" :
"toggle"))));
}
;
border_style:
TOK_NORMAL { $$ = BS_NORMAL; }
| TOK_NONE { $$ = BS_NONE; }
| TOK_1PIXEL { $$ = BS_1PIXEL; }
| TOK_TOGGLE { $$ = TOK_TOGGLE; }
;
move:
TOK_MOVE direction resize_px
{
char buffer[128];
snprintf(buffer, sizeof(buffer), "%d", $3);
json_output = cmd_move_direction(&current_match,
($2 == TOK_LEFT ? "left" :
($2 == TOK_RIGHT ? "right" :
($2 == TOK_UP ? "up" :
"down"))),
buffer);
}
| TOK_MOVE TOK_WORKSPACE STR
{
json_output = cmd_move_con_to_workspace_name(&current_match, $3);
}
| TOK_MOVE TOK_WORKSPACE TOK_NEXT
{
json_output = cmd_move_con_to_workspace(&current_match, "next");
}
| TOK_MOVE TOK_WORKSPACE TOK_PREV
{
json_output = cmd_move_con_to_workspace(&current_match, "prev");
}
| TOK_MOVE TOK_WORKSPACE TOK_NEXT_ON_OUTPUT
{
json_output = cmd_move_con_to_workspace(&current_match, "next_on_output");
}
| TOK_MOVE TOK_WORKSPACE TOK_PREV_ON_OUTPUT
{
json_output = cmd_move_con_to_workspace(&current_match, "prev_on_output");
}
| TOK_MOVE TOK_OUTPUT STR
{
json_output = cmd_move_con_to_output(&current_match, $3);
free($3);
}
| TOK_MOVE TOK_SCRATCHPAD
{
json_output = cmd_move_scratchpad(&current_match);
}
| TOK_MOVE TOK_WORKSPACE TOK_TO TOK_OUTPUT STR
{
json_output = cmd_move_workspace_to_output(&current_match, $5);
free($5);
}
;
append_layout:
TOK_APPEND_LAYOUT STR
{
json_output = cmd_append_layout(&current_match, $2);
free($2);
}
;
layout:
TOK_LAYOUT layout_mode
{
json_output = cmd_layout(&current_match,
($2 == L_DEFAULT ? "default" :
($2 == L_STACKED ? "stacked" :
"tabbed")));
}
;
layout_mode:
TOK_DEFAULT { $$ = L_DEFAULT; }
| TOK_STACKED { $$ = L_STACKED; }
| TOK_TABBED { $$ = L_TABBED; }
;
mark:
TOK_MARK STR
{
json_output = cmd_mark(&current_match, $2);
free($2);
}
;
nop:
TOK_NOP STR
{
json_output = cmd_nop(&current_match, $2);
free($2);
}
;
scratchpad:
TOK_SCRATCHPAD TOK_SHOW
{
json_output = cmd_scratchpad_show(&current_match);
}
;
resize:
TOK_RESIZE resize_way direction resize_px resize_tiling
{
char buffer1[128], buffer2[128];
snprintf(buffer1, sizeof(buffer1), "%d", $4);
snprintf(buffer2, sizeof(buffer2), "%d", $5);
json_output = cmd_resize(&current_match,
($2 == TOK_SHRINK ? "shrink" : "grow"),
($3 == TOK_LEFT ? "left" :
($3 == TOK_RIGHT ? "right" :
($3 == TOK_DOWN ? "down" :
"up"))),
buffer1,
buffer2);
}
;
resize_px:
/* empty */
{
$$ = 10;
}
| NUMBER TOK_PX
{
$$ = $1;
}
;
resize_tiling:
/* empty */
{
$$ = 10;
}
| TOK_OR NUMBER TOK_PPT
{
$$ = $2;
}
;
resize_way:
TOK_GROW { $$ = TOK_GROW; }
| TOK_SHRINK { $$ = TOK_SHRINK; }
;
direction:
TOK_UP { $$ = TOK_UP; }
| TOK_DOWN { $$ = TOK_DOWN; }
| TOK_LEFT { $$ = TOK_LEFT; }
| TOK_RIGHT { $$ = TOK_RIGHT; }
;
mode:
TOK_MODE STR
{
json_output = cmd_mode(&current_match, $2);
free($2);
}
;

View File

@ -11,7 +11,6 @@
#include <stdarg.h>
#include "all.h"
#include "cmdparse.tab.h"
/** When the command did not include match criteria (!), we use the currently
* focused command. Do not confuse this case with a command which included
@ -61,113 +60,9 @@ static Output *get_output_from_string(Output *current_output, const char *output
return output;
}
/*******************************************************************************
* Helper functions for the migration testing. We let the new parser call every
* function here and save the stack (current_match plus all parameters. Then we
* let the old parser call every function and actually execute the code. When
* there are differences between the first and the second invocation (or if
* there has not been a first invocation at all), we generate an error.
******************************************************************************/
static bool migration_test = false;
typedef struct stackframe {
Match match;
int n_args;
char *args[10];
TAILQ_ENTRY(stackframe) stackframes;
} stackframe;
static TAILQ_HEAD(stackframes_head, stackframe) old_stackframes =
TAILQ_HEAD_INITIALIZER(old_stackframes);
static struct stackframes_head new_stackframes =
TAILQ_HEAD_INITIALIZER(new_stackframes);
/* We use this char* to uniquely terminate the list of parameters to save. */
static char *last_parameter = "0";
void cmd_MIGRATION_enable() {
migration_test = true;
/* clear the current stack */
while (!TAILQ_EMPTY(&old_stackframes)) {
stackframe *current = TAILQ_FIRST(&old_stackframes);
for (int c = 0; c < current->n_args; c++)
if (current->args[c])
free(current->args[c]);
TAILQ_REMOVE(&old_stackframes, current, stackframes);
free(current);
}
while (!TAILQ_EMPTY(&new_stackframes)) {
stackframe *current = TAILQ_FIRST(&new_stackframes);
for (int c = 0; c < current->n_args; c++)
if (current->args[c])
free(current->args[c]);
TAILQ_REMOVE(&new_stackframes, current, stackframes);
free(current);
}
}
void cmd_MIGRATION_disable() {
migration_test = false;
}
void cmd_MIGRATION_save_new_parameters(Match *current_match, ...) {
va_list args;
DLOG("saving parameters.\n");
stackframe *frame = scalloc(sizeof(stackframe));
match_copy(&(frame->match), current_match);
/* All parameters are char*s */
va_start(args, current_match);
while (true) {
char *parameter = va_arg(args, char*);
if (parameter == last_parameter)
break;
DLOG("parameter = %s\n", parameter);
if (parameter)
frame->args[frame->n_args] = sstrdup(parameter);
frame->n_args++;
}
va_end(args);
TAILQ_INSERT_TAIL(&new_stackframes, frame, stackframes);
}
void cmd_MIGRATION_save_old_parameters(Match *current_match, ...) {
va_list args;
DLOG("saving new parameters.\n");
stackframe *frame = scalloc(sizeof(stackframe));
match_copy(&(frame->match), current_match);
/* All parameters are char*s */
va_start(args, current_match);
while (true) {
char *parameter = va_arg(args, char*);
if (parameter == last_parameter)
break;
DLOG("parameter = %s\n", parameter);
if (parameter)
frame->args[frame->n_args] = sstrdup(parameter);
frame->n_args++;
}
va_end(args);
TAILQ_INSERT_TAIL(&old_stackframes, frame, stackframes);
}
static bool re_differ(struct regex *new, struct regex *old) {
return ((new == NULL && old != NULL) ||
(new != NULL && old == NULL) ||
(new != NULL && old != NULL &&
strcmp(new->pattern, old->pattern) != 0));
}
static bool str_differ(char *new, char *old) {
return ((new == NULL && old != NULL) ||
(new != NULL && old == NULL) ||
(new != NULL && old != NULL &&
strcmp(new, old) != 0));
}
// This code is commented out because we might recycle it for popping up error
// messages on parser errors.
#if 0
static pid_t migration_pid = -1;
/*
@ -259,69 +154,7 @@ void cmd_MIGRATION_start_nagbar() {
#endif
}
void cmd_MIGRATION_validate() {
DLOG("validating the different stacks now\n");
int old_count = 0;
int new_count = 0;
stackframe *current;
TAILQ_FOREACH(current, &new_stackframes, stackframes)
new_count++;
TAILQ_FOREACH(current, &old_stackframes, stackframes)
old_count++;
if (new_count != old_count) {
ELOG("FAILED, new_count == %d != old_count == %d\n", new_count, old_count);
cmd_MIGRATION_start_nagbar();
return;
}
DLOG("parameter count matching, comparing one by one...\n");
stackframe *new_frame = TAILQ_FIRST(&new_stackframes),
*old_frame = TAILQ_FIRST(&old_stackframes);
for (int i = 0; i < new_count; i++) {
if (new_frame->match.dock != old_frame->match.dock ||
new_frame->match.id != old_frame->match.id ||
new_frame->match.con_id != old_frame->match.con_id ||
new_frame->match.floating != old_frame->match.floating ||
new_frame->match.insert_where != old_frame->match.insert_where ||
re_differ(new_frame->match.title, old_frame->match.title) ||
re_differ(new_frame->match.application, old_frame->match.application) ||
re_differ(new_frame->match.class, old_frame->match.class) ||
re_differ(new_frame->match.instance, old_frame->match.instance) ||
re_differ(new_frame->match.mark, old_frame->match.mark) ||
re_differ(new_frame->match.role, old_frame->match.role) ) {
ELOG("FAILED, new_frame->match != old_frame->match (frame %d)\n", i);
cmd_MIGRATION_start_nagbar();
return;
}
if (new_frame->n_args != old_frame->n_args) {
ELOG("FAILED, new_frame->n_args == %d != old_frame->n_args == %d (frame %d)\n",
new_frame->n_args, old_frame->n_args, i);
cmd_MIGRATION_start_nagbar();
return;
}
for (int j = 0; j < new_frame->n_args; j++) {
if (str_differ(new_frame->args[j], old_frame->args[j])) {
ELOG("FAILED, new_frame->args[%d] == %s != old_frame->args[%d] == %s (frame %d)\n",
j, new_frame->args[j], j, old_frame->args[j], i);
cmd_MIGRATION_start_nagbar();
return;
}
}
new_frame = TAILQ_NEXT(new_frame, stackframes);
old_frame = TAILQ_NEXT(old_frame, stackframes);
}
DLOG("OK\n");
}
#define MIGRATION_init(x, ...) do { \
if (migration_test) { \
cmd_MIGRATION_save_new_parameters(current_match, __FUNCTION__, ##__VA_ARGS__ , last_parameter); \
return NULL; \
} else { \
cmd_MIGRATION_save_old_parameters(current_match, __FUNCTION__, ##__VA_ARGS__ , last_parameter); \
} \
} while (0)
#endif
/*******************************************************************************
* Criteria functions.
@ -353,13 +186,6 @@ char *cmd_criteria_init(Match *current_match) {
char *cmd_criteria_match_windows(Match *current_match) {
owindow *next, *current;
/* The same as MIGRATION_init, but doesnt return */
if (migration_test) {
cmd_MIGRATION_save_new_parameters(current_match, __FUNCTION__, last_parameter);
} else {
cmd_MIGRATION_save_old_parameters(current_match, __FUNCTION__, last_parameter);
}
DLOG("match specification finished, matching...\n");
/* copy the old list head to iterate through it and start with a fresh
* list which will contain only matching windows */
@ -404,13 +230,6 @@ char *cmd_criteria_match_windows(Match *current_match) {
}
char *cmd_criteria_add(Match *current_match, char *ctype, char *cvalue) {
/* The same as MIGRATION_init, but doesnt return */
if (migration_test) {
cmd_MIGRATION_save_new_parameters(current_match, __FUNCTION__, last_parameter);
} else {
cmd_MIGRATION_save_old_parameters(current_match, __FUNCTION__, last_parameter);
}
DLOG("ctype=*%s*, cvalue=*%s*\n", ctype, cvalue);
if (strcmp(ctype, "class") == 0) {
@ -477,8 +296,6 @@ char *cmd_criteria_add(Match *current_match, char *ctype, char *cvalue) {
char *cmd_move_con_to_workspace(Match *current_match, char *which) {
owindow *current;
MIGRATION_init(x, which);
DLOG("which=%s\n", which);
HANDLE_EMPTY_MATCH;
@ -510,8 +327,6 @@ char *cmd_move_con_to_workspace(Match *current_match, char *which) {
}
char *cmd_move_con_to_workspace_name(Match *current_match, char *name) {
MIGRATION_init(x, name);
if (strncasecmp(name, "__i3_", strlen("__i3_")) == 0) {
LOG("You cannot switch to the i3 internal workspaces.\n");
return sstrdup("{\"sucess\": false}");
@ -542,7 +357,6 @@ char *cmd_move_con_to_workspace_name(Match *current_match, char *name) {
}
char *cmd_resize(Match *current_match, char *way, char *direction, char *resize_px, char *resize_ppt) {
MIGRATION_init(x, way, direction, resize_px, resize_ppt);
/* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
DLOG("resizing in way %s, direction %s, px %s or ppt %s\n", way, direction, resize_px, resize_ppt);
// TODO: We could either handle this in the parser itself as a separate token (and make the stack typed) or we need a better way to convert a string to a number with error checking
@ -641,7 +455,6 @@ char *cmd_resize(Match *current_match, char *way, char *direction, char *resize_
}
char *cmd_border(Match *current_match, char *border_style_str) {
MIGRATION_init(x, border_style_str);
DLOG("border style should be changed to %s\n", border_style_str);
owindow *current;
@ -675,7 +488,6 @@ char *cmd_border(Match *current_match, char *border_style_str) {
}
char *cmd_nop(Match *current_match, char *comment) {
MIGRATION_init(x, comment);
LOG("-------------------------------------------------\n");
LOG(" NOP: %s\n", comment);
LOG("-------------------------------------------------\n");
@ -684,7 +496,6 @@ char *cmd_nop(Match *current_match, char *comment) {
}
char *cmd_append_layout(Match *current_match, char *path) {
MIGRATION_init(x, path);
LOG("Appending layout \"%s\"\n", path);
tree_append_json(path);
tree_render();
@ -694,7 +505,6 @@ char *cmd_append_layout(Match *current_match, char *path) {
}
char *cmd_workspace(Match *current_match, char *which) {
MIGRATION_init(x, which);
Con *ws;
DLOG("which=%s\n", which);
@ -720,7 +530,6 @@ char *cmd_workspace(Match *current_match, char *which) {
}
char *cmd_workspace_back_and_forth(Match *current_match) {
MIGRATION_init(x);
workspace_back_and_forth();
tree_render();
@ -729,7 +538,6 @@ char *cmd_workspace_back_and_forth(Match *current_match) {
}
char *cmd_workspace_name(Match *current_match, char *name) {
MIGRATION_init(x, name);
if (strncasecmp(name, "__i3_", strlen("__i3_")) == 0) {
LOG("You cannot switch to the i3 internal workspaces.\n");
return sstrdup("{\"sucess\": false}");
@ -758,7 +566,6 @@ char *cmd_workspace_name(Match *current_match, char *name) {
}
char *cmd_mark(Match *current_match, char *mark) {
MIGRATION_init(x, mark);
DLOG("Clearing all windows which have that mark first\n");
Con *con;
@ -784,7 +591,6 @@ char *cmd_mark(Match *current_match, char *mark) {
}
char *cmd_mode(Match *current_match, char *mode) {
MIGRATION_init(x, mode);
DLOG("mode=%s\n", mode);
switch_mode(mode);
@ -793,7 +599,6 @@ char *cmd_mode(Match *current_match, char *mode) {
}
char *cmd_move_con_to_output(Match *current_match, char *name) {
MIGRATION_init(x, name);
owindow *current;
DLOG("should move window to output %s\n", name);
@ -845,7 +650,6 @@ char *cmd_move_con_to_output(Match *current_match, char *name) {
}
char *cmd_floating(Match *current_match, char *floating_mode) {
MIGRATION_init(x, floating_mode);
owindow *current;
DLOG("floating_mode=%s\n", floating_mode);
@ -874,7 +678,6 @@ char *cmd_floating(Match *current_match, char *floating_mode) {
}
char *cmd_move_workspace_to_output(Match *current_match, char *name) {
MIGRATION_init(x, name);
DLOG("should move workspace to output %s\n", name);
HANDLE_EMPTY_MATCH;
@ -923,7 +726,6 @@ char *cmd_move_workspace_to_output(Match *current_match, char *name) {
}
char *cmd_split(Match *current_match, char *direction) {
MIGRATION_init(x, direction);
/* TODO: use matches */
LOG("splitting in direction %c\n", direction[0]);
tree_split(focused, (direction[0] == 'v' ? VERT : HORIZ));
@ -937,7 +739,6 @@ char *cmd_split(Match *current_match, char *direction) {
char *cmd_kill(Match *current_match, char *kill_mode_str) {
if (kill_mode_str == NULL)
kill_mode_str = "window";
MIGRATION_init(x, kill_mode_str);
owindow *current;
DLOG("kill_mode=%s\n", kill_mode_str);
@ -969,7 +770,6 @@ char *cmd_kill(Match *current_match, char *kill_mode_str) {
}
char *cmd_exec(Match *current_match, char *nosn, char *command) {
MIGRATION_init(x, nosn, command);
bool no_startup_id = (nosn != NULL);
DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
@ -980,7 +780,6 @@ char *cmd_exec(Match *current_match, char *nosn, char *command) {
}
char *cmd_focus_direction(Match *current_match, char *direction) {
MIGRATION_init(x, direction);
if (focused &&
focused->type != CT_WORKSPACE &&
focused->fullscreen_mode != CF_NONE) {
@ -1010,7 +809,6 @@ char *cmd_focus_direction(Match *current_match, char *direction) {
}
char *cmd_focus_window_mode(Match *current_match, char *window_mode) {
MIGRATION_init(x, window_mode);
if (focused &&
focused->type != CT_WORKSPACE &&
focused->fullscreen_mode != CF_NONE) {
@ -1046,7 +844,6 @@ char *cmd_focus_window_mode(Match *current_match, char *window_mode) {
}
char *cmd_focus_level(Match *current_match, char *level) {
MIGRATION_init(x, level);
if (focused &&
focused->type != CT_WORKSPACE &&
focused->fullscreen_mode != CF_NONE) {
@ -1067,7 +864,6 @@ char *cmd_focus_level(Match *current_match, char *level) {
}
char *cmd_focus(Match *current_match) {
MIGRATION_init(x);
DLOG("current_match = %p\n", current_match);
if (focused &&
focused->type != CT_WORKSPACE &&
@ -1132,7 +928,6 @@ char *cmd_focus(Match *current_match) {
char *cmd_fullscreen(Match *current_match, char *fullscreen_mode) {
if (fullscreen_mode == NULL)
fullscreen_mode = "output";
MIGRATION_init(x, fullscreen_mode);
DLOG("toggling fullscreen, mode = %s\n", fullscreen_mode);
owindow *current;
@ -1150,7 +945,6 @@ char *cmd_fullscreen(Match *current_match, char *fullscreen_mode) {
}
char *cmd_move_direction(Match *current_match, char *direction, char *move_px) {
MIGRATION_init(x, direction, move_px);
// TODO: We could either handle this in the parser itself as a separate token (and make the stack typed) or we need a better way to convert a string to a number with error checking
int px = atoi(move_px);
@ -1170,10 +964,10 @@ char *cmd_move_direction(Match *current_match, char *direction, char *move_px) {
}
floating_reposition(focused->parent, newrect);
} else {
tree_move((strcmp(direction, "right") == 0 ? TOK_RIGHT :
(strcmp(direction, "left") == 0 ? TOK_LEFT :
(strcmp(direction, "up") == 0 ? TOK_UP :
TOK_DOWN))));
tree_move((strcmp(direction, "right") == 0 ? D_RIGHT :
(strcmp(direction, "left") == 0 ? D_LEFT :
(strcmp(direction, "up") == 0 ? D_UP :
D_DOWN))));
tree_render();
}
@ -1185,7 +979,6 @@ char *cmd_move_direction(Match *current_match, char *direction, char *move_px) {
char *cmd_layout(Match *current_match, char *layout_str) {
if (strcmp(layout_str, "stacking") == 0)
layout_str = "stacked";
MIGRATION_init(x, layout_str);
DLOG("changing layout to %s\n", layout_str);
owindow *current;
int layout = (strcmp(layout_str, "default") == 0 ? L_DEFAULT :
@ -1209,7 +1002,6 @@ char *cmd_layout(Match *current_match, char *layout_str) {
}
char *cmd_exit(Match *current_match) {
MIGRATION_init(x);
LOG("Exiting due to user command.\n");
exit(0);
@ -1217,7 +1009,6 @@ char *cmd_exit(Match *current_match) {
}
char *cmd_reload(Match *current_match) {
MIGRATION_init(x);
LOG("reloading\n");
kill_configerror_nagbar(false);
load_configuration(conn, NULL, true);
@ -1230,7 +1021,6 @@ char *cmd_reload(Match *current_match) {
}
char *cmd_restart(Match *current_match) {
MIGRATION_init(x);
LOG("restarting i3\n");
i3_restart(false);
@ -1239,7 +1029,6 @@ char *cmd_restart(Match *current_match) {
}
char *cmd_open(Match *current_match) {
MIGRATION_init(x);
LOG("opening new container\n");
Con *con = tree_open_con(NULL, NULL);
con_focus(con);
@ -1252,7 +1041,6 @@ char *cmd_open(Match *current_match) {
}
char *cmd_focus_output(Match *current_match, char *name) {
MIGRATION_init(x, name);
owindow *current;
DLOG("name = %s\n", name);
@ -1288,7 +1076,6 @@ char *cmd_focus_output(Match *current_match, char *name) {
}
char *cmd_move_scratchpad(Match *current_match) {
MIGRATION_init(x);
DLOG("should move window to scratchpad\n");
owindow *current;
@ -1306,7 +1093,6 @@ char *cmd_move_scratchpad(Match *current_match) {
}
char *cmd_scratchpad_show(Match *current_match) {
MIGRATION_init(x);
DLOG("should show scratchpad window\n");
owindow *current;

View File

@ -2,7 +2,7 @@
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
*
* handlers.c: Small handlers for various events (keypresses, focus changes,
* ).
@ -118,7 +118,7 @@ static void handle_key_press(xcb_key_press_event_t *event) {
}
}
char *json_result = parse_cmd(bind->command);
char *json_result = parse_command(bind->command);
FREE(json_result);
return;
}

View File

@ -119,7 +119,7 @@ IPC_HANDLER(command) {
char *command = scalloc(message_size + 1);
strncpy(command, (const char*)message, message_size);
LOG("IPC: received: *%s*\n", command);
char *reply = parse_cmd((const char*)command);
char *reply = parse_command((const char*)command);
char *save_reply = reply;
free(command);

View File

@ -9,8 +9,6 @@
*/
#include "all.h"
#include "cmdparse.tab.h"
typedef enum { BEFORE, AFTER } position_t;
/*
@ -88,8 +86,8 @@ static void attach_to_workspace(Con *con, Con *ws) {
}
/*
* Moves the current container in the given direction (TOK_LEFT, TOK_RIGHT,
* TOK_UP, TOK_DOWN from cmdparse.l)
* Moves the current container in the given direction (D_LEFT, D_RIGHT,
* D_UP, D_DOWN).
*
*/
void tree_move(int direction) {
@ -107,7 +105,7 @@ void tree_move(int direction) {
return;
}
orientation_t o = (direction == TOK_LEFT || direction == TOK_RIGHT ? HORIZ : VERT);
orientation_t o = (direction == D_LEFT || direction == D_RIGHT ? HORIZ : VERT);
Con *same_orientation = con_parent_with_orientation(con, o);
/* The do {} while is used to 'restart' at this point with a different
@ -136,14 +134,14 @@ void tree_move(int direction) {
if (same_orientation == con->parent) {
DLOG("We are in the same container\n");
Con *swap;
if ((swap = (direction == TOK_LEFT || direction == TOK_UP ?
if ((swap = (direction == D_LEFT || direction == D_UP ?
TAILQ_PREV(con, nodes_head, nodes) :
TAILQ_NEXT(con, nodes)))) {
if (!con_is_leaf(swap)) {
insert_con_into(con, con_descend_focused(swap), AFTER);
goto end;
}
if (direction == TOK_LEFT || direction == TOK_UP)
if (direction == D_LEFT || direction == D_UP)
TAILQ_SWAP(swap, con, &(swap->parent->nodes_head), nodes);
else TAILQ_SWAP(con, swap, &(swap->parent->nodes_head), nodes);
@ -174,7 +172,7 @@ void tree_move(int direction) {
DLOG("above = %p\n", above);
Con *next;
position_t position;
if (direction == TOK_UP || direction == TOK_LEFT) {
if (direction == D_UP || direction == D_LEFT) {
position = BEFORE;
next = TAILQ_PREV(above, nodes_head, nodes);
} else {