]> git.sur5r.net Git - i3/i3/blobdiff - src/cmdparse.y
Implement 'fullscreen global'
[i3/i3] / src / cmdparse.y
index f588ad1aa022039385881a3c9b080e9f3c2da578..fbc2307f2c7f7953970c4f6a9c9ec7b68e55cded 100644 (file)
@@ -3,7 +3,7 @@
  * vim:ts=4:sw=4:expandtab
  *
  * i3 - an improved dynamic tiling window manager
- * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
  *
  * cmdparse.y: the parser for commands you send to i3 (or bind on keys)
  *
 #include <sys/stat.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <limits.h>
 
 #include "all.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
+ * criteria but which did not match any windows. This macro has to be called in
+ * every command.
+ */
+#define HANDLE_EMPTY_MATCH do { \
+    if (match_is_empty(&current_match)) { \
+        owindow *ow = smalloc(sizeof(owindow)); \
+        ow->con = focused; \
+        TAILQ_INIT(&owindows); \
+        TAILQ_INSERT_TAIL(&owindows, ow, owindows); \
+    } \
+} while (0)
+
 typedef struct yy_buffer_state *YY_BUFFER_STATE;
 extern int cmdyylex(struct context *context);
 extern int cmdyyparse(void);
 extern FILE *cmdyyin;
 YY_BUFFER_STATE cmdyy_scan_string(const char *);
 
-static struct bindings_head *current_bindings;
 static struct context *context;
 static Match current_match;
 
@@ -37,6 +51,10 @@ typedef struct owindow {
 } owindow;
 static TAILQ_HEAD(owindows_head, owindow) owindows;
 
+/* Holds the JSON which will be returned via IPC or NULL for the default return
+ * message */
+static char *json_output;
+
 /* We don’t 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. */
@@ -45,8 +63,7 @@ static TAILQ_HEAD(owindows_head, owindow) owindows;
 void cmdyyerror(const char *error_message) {
     ELOG("\n");
     ELOG("CMD: %s\n", error_message);
-    ELOG("CMD: in file \"%s\", line %d:\n",
-            context->filename, context->line_number);
+    ELOG("CMD: in command:\n");
     ELOG("CMD:   %s\n", context->line_copy);
     ELOG("CMD:   ");
     for (int c = 1; c <= context->last_column; c++)
@@ -55,28 +72,36 @@ void cmdyyerror(const char *error_message) {
         else printf(" ");
     printf("\n");
     ELOG("\n");
+    context->compact_error = sstrdup(error_message);
 }
 
 int cmdyywrap() {
     return 1;
 }
 
-void parse_cmd(const char *new) {
-
-    //const char *new = "[level-up workspace] attach $output, focus";
-
+char *parse_cmd(const char *new) {
+    LOG("COMMAND: *%s*\n", new);
     cmdyy_scan_string(new);
 
+    match_init(&current_match);
     context = scalloc(sizeof(struct context));
     context->filename = "cmd";
+    FREE(json_output);
     if (cmdyyparse() != 0) {
-            fprintf(stderr, "Could not parse configfile\n");
-            exit(1);
+        fprintf(stderr, "Could not parse command\n");
+        asprintf(&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\n");
+    printf("done, json output = %s\n", json_output);
 
     FREE(context->line_copy);
+    FREE(context->compact_error);
     free(context);
+    return json_output;
 }
 
 %}
@@ -86,42 +111,82 @@ void parse_cmd(const char *new) {
 
 %union {
     char *string;
+    char chr;
+    int number;
 }
 
-%token TOK_ATTACH "attach"
-%token TOK_EXEC "exec"
-%token TOK_EXIT "exit"
-%token TOK_RELOAD "reload"
-%token TOK_RESTART "restart"
-%token TOK_KILL "kill"
-%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_NONE "none"
-%token TOK_1PIXEL "1pixel"
-%token TOK_MODE "mode"
-%token TOK_TILING "tiling"
-%token TOK_FLOATING "floating"
-%token TOK_WORKSPACE "workspace"
-%token TOK_FOCUS "focus"
-%token TOK_MOVE "move"
-%token TOK_OPEN "open"
-
-%token TOK_CLASS "class"
-%token TOK_ID "id"
-%token TOK_CON_ID "con_id"
-
-%token WHITESPACE "<whitespace>"
-%token STR "<string>"
+%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_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_ENABLE          "enable"
+%token              TOK_DISABLE         "disable"
+%token              TOK_WORKSPACE       "workspace"
+%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_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_CLASS           "class"
+%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>    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
 
 %%
 
-commands: /* empty */
-    | commands optwhitespace ';' optwhitespace command
+commands:
+    commands ';' command
     | command
     {
         owindow *current;
@@ -132,19 +197,16 @@ commands: /* empty */
             TAILQ_REMOVE(&owindows, current, owindows);
             free(current);
         }
+        match_init(&current_match);
     }
     ;
 
-optwhitespace:
-    | WHITESPACE
-    ;
-
 command:
-    match optwhitespace operations
+    match operations
     ;
 
 match:
-    | matchstart optwhitespace criteria optwhitespace matchend
+    | matchstart criteria matchend
     {
         printf("match parsed\n");
     }
@@ -154,7 +216,7 @@ matchstart:
     '['
     {
         printf("start\n");
-        memset(&current_match, '\0', sizeof(Match));
+        match_init(&current_match);
         TAILQ_INIT(&owindows);
         /* copy all_cons */
         Con *con;
@@ -190,6 +252,11 @@ matchend:
                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 
                 }
+            } else if (current_match.mark != NULL && current->con->mark != NULL &&
+                    strcasecmp(current_match.mark, current->con->mark) == 0) {
+                printf("match by mark\n");
+                    TAILQ_INSERT_TAIL(&owindows, current, owindows);
+
             } else {
                 if (current->con->window == NULL)
                     continue;
@@ -211,49 +278,91 @@ matchend:
     ;
 
 criteria:
+    criteria criterion
+    | criterion
+    ;
+
+criterion:
     TOK_CLASS '=' STR
     {
-        printf("criteria: class = %s\n", $<string>3);
-        current_match.class = $<string>3;
+        printf("criteria: class = %s\n", $3);
+        current_match.class = $3;
     }
     | TOK_CON_ID '=' STR
     {
-        printf("criteria: id = %s\n", $<string>3);
-        /* TODO: correctly parse number */
-        current_match.con_id = atoi($<string>3);
-        printf("id as int = %d\n", current_match.con_id);
+        printf("criteria: id = %s\n", $3);
+        char *end;
+        long parsed = strtol($3, &end, 10);
+        if (parsed == LONG_MIN ||
+            parsed == LONG_MAX ||
+            parsed < 0 ||
+            (end && *end != '\0')) {
+            ELOG("Could not parse con id \"%s\"\n", $3);
+        } else {
+            current_match.con_id = (Con*)parsed;
+            printf("id as int = %p\n", current_match.con_id);
+        }
+    }
+    | TOK_ID '=' STR
+    {
+        printf("criteria: window id = %s\n", $3);
+        char *end;
+        long parsed = strtol($3, &end, 10);
+        if (parsed == LONG_MIN ||
+            parsed == LONG_MAX ||
+            parsed < 0 ||
+            (end && *end != '\0')) {
+            ELOG("Could not parse window id \"%s\"\n", $3);
+        } else {
+            current_match.id = parsed;
+            printf("window id as int = %d\n", current_match.id);
+        }
+    }
+    | TOK_MARK '=' STR
+    {
+        printf("criteria: mark = %s\n", $3);
+        current_match.mark = $3;
+    }
+    | TOK_TITLE '=' STR
+    {
+        printf("criteria: title = %s\n", $3);
+        current_match.title = $3;
     }
     ;
 
 operations:
     operation
-    | operation optwhitespace
-    | operations ',' optwhitespace operation
+    | operations ',' operation
     ;
 
 operation:
     exec
     | exit
-    /*| reload
     | restart
-    | mark
-    | fullscreen
-    | layout
+    | reload
     | border
-    | mode
-    | workspace
-    | move*/
+    | layout
+    | append_layout
+    | move
     | workspace
-    | attach
     | focus
     | kill
     | open
+    | fullscreen
+    | split
+    | floating
+    | mark
+    | resize
+    | nop
+    | mode
     ;
 
 exec:
-    TOK_EXEC WHITESPACE STR
+    TOK_EXEC STR
     {
-        printf("should execute %s\n", $<string>3);
+        printf("should execute %s\n", $2);
+        start_application($2);
+        free($2);
     }
     ;
 
@@ -261,48 +370,142 @@ exit:
     TOK_EXIT
     {
         printf("exit, bye bye\n");
+        exit(0);
+    }
+    ;
+
+reload:
+    TOK_RELOAD
+    {
+        printf("reloading\n");
+        load_configuration(conn, NULL, true);
+        x_set_i3_atoms();
+        /* Send an IPC event just in case the ws names have changed */
+        ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
     }
     ;
 
-attach:
-    TOK_ATTACH
+restart:
+    TOK_RESTART
     {
-        printf("should attach\n");
+        printf("restarting i3\n");
+        i3_restart(false);
     }
     ;
 
 focus:
     TOK_FOCUS
     {
-        printf("should focus\n");
+        owindow *current;
+
+        if (match_is_empty(&current_match)) {
+            ELOG("You have to specify which window/container should be focused.\n");
+            ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
+
+            asprintf(&json_output, "{\"success\":false, \"error\":\"You have to "
+                     "specify which window/container should be focused\"}");
+            break;
+        }
+
+        int count = 0;
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            LOG("focusing %p / %s\n", current->con, current->con->name);
+            con_focus(current->con);
+            count++;
+        }
+
+        if (count > 1)
+            LOG("WARNING: Your criteria for the focus command matches %d containers, "
+                "while only exactly one container can be focused at a time.\n", count);
+
+        tree_render();
+    }
+    | TOK_FOCUS direction
+    {
+        int direction = $2;
+        switch (direction) {
+            case TOK_LEFT:
+                LOG("Focusing left\n");
+                tree_next('p', HORIZ);
+                break;
+            case TOK_RIGHT:
+                LOG("Focusing right\n");
+                tree_next('n', HORIZ);
+                break;
+            case TOK_UP:
+                LOG("Focusing up\n");
+                tree_next('p', VERT);
+                break;
+            case TOK_DOWN:
+                LOG("Focusing down\n");
+                tree_next('n', VERT);
+                break;
+            default:
+                ELOG("Invalid focus direction (%d)\n", direction);
+                break;
+        }
+
+        tree_render();
+    }
+    | TOK_FOCUS level
+    {
+        if ($2 == TOK_PARENT)
+            level_up();
+        else level_down();
+
+        tree_render();
     }
     ;
 
+level:
+    TOK_PARENT  { $$ = TOK_PARENT; }
+    | TOK_CHILD { $$ = TOK_CHILD;  }
+    ;
+
 kill:
-    TOK_KILL
+    TOK_KILL optional_kill_mode
     {
         owindow *current;
 
         printf("killing!\n");
-        /* TODO: check if the match is empty, not if the result is empty */
+        /* check if the match is empty, not if the result is empty */
         if (match_is_empty(&current_match))
-            tree_close(focused);
+            tree_close_con($2);
         else {
-        TAILQ_FOREACH(current, &owindows, owindows) {
-            printf("matching: %p / %s\n", current->con, current->con->name);
-            tree_close(current->con);
-        }
+            TAILQ_FOREACH(current, &owindows, owindows) {
+                printf("matching: %p / %s\n", current->con, current->con->name);
+                tree_close(current->con, $2, false);
+            }
         }
 
+        tree_render();
     }
     ;
 
+optional_kill_mode:
+    /* empty */             { $$ = KILL_WINDOW; }
+    | TOK_WINDOW { $$ = KILL_WINDOW; }
+    | TOK_CLIENT { $$ = KILL_CLIENT; }
+    ;
+
 workspace:
-    TOK_WORKSPACE WHITESPACE STR
+    TOK_WORKSPACE TOK_NEXT
+    {
+        workspace_next();
+        tree_render();
+    }
+    | TOK_WORKSPACE TOK_PREV
+    {
+        workspace_prev();
+        tree_render();
+    }
+    | TOK_WORKSPACE STR
     {
-        printf("should switch to workspace %s\n", $<string>3);
-        workspace_show($<string>3);
-        free($<string>3);
+        printf("should switch to workspace %s\n", $2);
+        workspace_show($2);
+        free($2);
+
+        tree_render();
     }
     ;
 
@@ -310,6 +513,302 @@ open:
     TOK_OPEN
     {
         printf("opening new container\n");
-        tree_open_con(NULL);
+        Con *con = tree_open_con(NULL, NULL);
+        con_focus(con);
+        asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
+
+        tree_render();
+    }
+    ;
+
+fullscreen:
+    TOK_FULLSCREEN fullscreen_mode
+    {
+        printf("toggling fullscreen, mode = %s\n", ($2 == CF_OUTPUT ? "normal" : "global"));
+        owindow *current;
+
+        HANDLE_EMPTY_MATCH;
+
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            printf("matching: %p / %s\n", current->con, current->con->name);
+            con_toggle_fullscreen(current->con, $2);
+        }
+
+        tree_render();
+    }
+    ;
+
+fullscreen_mode:
+    /* empty */  { $$ = CF_OUTPUT; }
+    | TOK_GLOBAL { $$ = CF_GLOBAL; }
+    ;
+
+split:
+    TOK_SPLIT split_direction
+    {
+        /* TODO: use matches */
+        printf("splitting in direction %c\n", $2);
+        tree_split(focused, ($2 == 'v' ? VERT : HORIZ));
+
+        tree_render();
+    }
+    ;
+
+split_direction:
+    TOK_HORIZONTAL  { $$ = 'h'; }
+    | 'h'           { $$ = 'h'; }
+    | TOK_VERTICAL  { $$ = 'v'; }
+    | 'v'           { $$ = 'v'; }
+    ;
+
+floating:
+    TOK_FLOATING boolean
+    {
+        HANDLE_EMPTY_MATCH;
+
+        owindow *current;
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            printf("matching: %p / %s\n", current->con, current->con->name);
+            if ($2 == TOK_TOGGLE) {
+                printf("should toggle mode\n");
+                toggle_floating_mode(current->con, false);
+            } else {
+                printf("should switch mode to %s\n", ($2 == TOK_FLOATING ? "floating" : "tiling"));
+                if ($2 == TOK_ENABLE) {
+                    floating_enable(current->con, false);
+                } else {
+                    floating_disable(current->con, false);
+                }
+            }
+        }
+
+        tree_render();
+    }
+    ;
+
+boolean:
+    TOK_ENABLE    { $$ = TOK_ENABLE; }
+    | TOK_DISABLE { $$ = TOK_DISABLE; }
+    | TOK_TOGGLE  { $$ = TOK_TOGGLE; }
+    ;
+
+border:
+    TOK_BORDER border_style
+    {
+        printf("border style should be changed to %d\n", $2);
+        owindow *current;
+
+        HANDLE_EMPTY_MATCH;
+
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            printf("matching: %p / %s\n", current->con, current->con->name);
+            if ($2 == TOK_TOGGLE) {
+                current->con->border_style++;
+                current->con->border_style %= 3;
+            } else current->con->border_style = $2;
+        }
+
+        tree_render();
+    }
+    ;
+
+border_style:
+    TOK_NORMAL      { $$ = BS_NORMAL; }
+    | TOK_NONE      { $$ = BS_NONE; }
+    | TOK_1PIXEL    { $$ = BS_1PIXEL; }
+    | TOK_TOGGLE    { $$ = TOK_TOGGLE; }
+    ;
+
+move:
+    TOK_MOVE direction
+    {
+        printf("moving in direction %d\n", $2);
+        tree_move($2);
+
+        tree_render();
+    }
+    | TOK_MOVE TOK_WORKSPACE STR
+    {
+        owindow *current;
+
+        printf("should move window to workspace %s\n", $3);
+        /* get the workspace */
+        Con *ws = workspace_get($3, NULL);
+        free($3);
+
+        HANDLE_EMPTY_MATCH;
+
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            printf("matching: %p / %s\n", current->con, current->con->name);
+            con_move_to_workspace(current->con, ws);
+        }
+
+        tree_render();
+    }
+    ;
+
+append_layout:
+    TOK_APPEND_LAYOUT STR
+    {
+        printf("restoring \"%s\"\n", $2);
+        tree_append_json($2);
+        free($2);
+        tree_render();
+    }
+    ;
+
+layout:
+    TOK_LAYOUT layout_mode
+    {
+        printf("changing layout to %d\n", $2);
+        owindow *current;
+
+        /* check if the match is empty, not if the result is empty */
+        if (match_is_empty(&current_match))
+            con_set_layout(focused->parent, $2);
+        else {
+            TAILQ_FOREACH(current, &owindows, owindows) {
+                printf("matching: %p / %s\n", current->con, current->con->name);
+                con_set_layout(current->con, $2);
+            }
+        }
+
+        tree_render();
+    }
+    ;
+
+layout_mode:
+    TOK_DEFAULT   { $$ = L_DEFAULT; }
+    | TOK_STACKED { $$ = L_STACKED; }
+    | TOK_TABBED  { $$ = L_TABBED; }
+    ;
+
+mark:
+    TOK_MARK STR
+    {
+        printf("marking window with str %s\n", $2);
+        owindow *current;
+
+        HANDLE_EMPTY_MATCH;
+
+        TAILQ_FOREACH(current, &owindows, owindows) {
+            printf("matching: %p / %s\n", current->con, current->con->name);
+            current->con->mark = sstrdup($2);
+        }
+
+        free($<string>2);
+
+        tree_render();
+    }
+    ;
+
+nop:
+    TOK_NOP STR
+    {
+        printf("-------------------------------------------------\n");
+        printf("  NOP: %s\n", $2);
+        printf("-------------------------------------------------\n");
+        free($2);
+    }
+    ;
+
+resize:
+    TOK_RESIZE resize_way direction resize_px resize_tiling
+    {
+        /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
+        printf("resizing in way %d, direction %d, px %d or ppt %d\n", $2, $3, $4, $5);
+        int direction = $3;
+        int px = $4;
+        int ppt = $5;
+        if ($2 == TOK_SHRINK) {
+            px *= -1;
+            ppt *= -1;
+        }
+
+        if (con_is_floating(focused)) {
+            printf("floating resize\n");
+            if (direction == TOK_UP) {
+                focused->parent->rect.y -= px;
+                focused->parent->rect.height += px;
+            } else if (direction == TOK_DOWN) {
+                focused->rect.height += px;
+            } else if (direction == TOK_LEFT) {
+                focused->rect.x -= px;
+                focused->rect.width += px;
+            } else {
+                focused->rect.width += px;
+            }
+        } else {
+            LOG("tiling resize\n");
+            /* get the default percentage */
+            int children = con_num_children(focused->parent);
+            Con *other;
+            LOG("ins. %d children\n", children);
+            double percentage = 1.0 / children;
+            LOG("default percentage = %f\n", percentage);
+
+            if (direction == TOK_UP || direction == TOK_LEFT) {
+                other = TAILQ_PREV(focused, nodes_head, nodes);
+            } else {
+                other = TAILQ_NEXT(focused, nodes);
+            }
+            if (other == TAILQ_END(workspaces)) {
+                LOG("No other container in this direction found, cannot resize.\n");
+                return 0;
+            }
+            LOG("other->percent = %f\n", other->percent);
+            LOG("focused->percent before = %f\n", focused->percent);
+            if (focused->percent == 0.0)
+                focused->percent = percentage;
+            if (other->percent == 0.0)
+                other->percent = percentage;
+            focused->percent += ((double)ppt / 100.0);
+            other->percent -= ((double)ppt / 100.0);
+            LOG("focused->percent after = %f\n", focused->percent);
+            LOG("other->percent after = %f\n", other->percent);
+        }
+
+        tree_render();
+    }
+    ;
+
+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
+    {
+        switch_mode($2);
     }
     ;