From a8a145eb2fa1656dfbd92da3ea36af05544c206f Mon Sep 17 00:00:00 2001 From: BVK Chaitanya Date: Wed, 5 May 2010 14:05:06 +0530 Subject: [PATCH] simplify cmdblock with cmdlist --- include/grub/script_sh.h | 19 ++++------------- script/execute.c | 6 +++--- script/parser.y | 10 +++------ script/script.c | 46 +++++++++++++++++----------------------- util/grub-script-check.c | 2 +- 5 files changed, 31 insertions(+), 52 deletions(-) diff --git a/include/grub/script_sh.h b/include/grub/script_sh.h index b55b6a806..53f4f13bb 100644 --- a/include/grub/script_sh.h +++ b/include/grub/script_sh.h @@ -82,15 +82,6 @@ struct grub_script_cmdline struct grub_script_arglist *arglist; }; -/* A block of commands, this can be used to group commands. */ -struct grub_script_cmdblock -{ - struct grub_script_cmd cmd; - - /* A chain of commands. */ - struct grub_script_cmd *cmdlist; -}; - /* An if statement. */ struct grub_script_cmdif { @@ -234,8 +225,6 @@ grub_script_add_arglist (struct grub_parser_param *state, struct grub_script_cmd * grub_script_create_cmdline (struct grub_parser_param *state, struct grub_script_arglist *arglist); -struct grub_script_cmd * -grub_script_create_cmdblock (struct grub_parser_param *state); struct grub_script_cmd * grub_script_create_cmdif (struct grub_parser_param *state, @@ -262,9 +251,9 @@ grub_script_create_cmdmenu (struct grub_parser_param *state, int options); struct grub_script_cmd * -grub_script_add_cmd (struct grub_parser_param *state, - struct grub_script_cmdblock *cmdblock, - struct grub_script_cmd *cmd); +grub_script_append_cmd (struct grub_parser_param *state, + struct grub_script_cmd *list, + struct grub_script_cmd *last); struct grub_script_arg * grub_script_arg_add (struct grub_parser_param *state, struct grub_script_arg *arg, @@ -301,7 +290,7 @@ void grub_script_yyerror (struct grub_parser_param *, char const *); /* Commands to execute, don't use these directly. */ grub_err_t grub_script_execute_cmdline (struct grub_script_cmd *cmd); -grub_err_t grub_script_execute_cmdblock (struct grub_script_cmd *cmd); +grub_err_t grub_script_execute_cmdlist (struct grub_script_cmd *cmd); grub_err_t grub_script_execute_cmdif (struct grub_script_cmd *cmd); grub_err_t grub_script_execute_cmdfor (struct grub_script_cmd *cmd); grub_err_t grub_script_execute_cmdwhile (struct grub_script_cmd *cmd); diff --git a/script/execute.c b/script/execute.c index 40f161267..e10558b4d 100644 --- a/script/execute.c +++ b/script/execute.c @@ -269,13 +269,13 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd) /* Execute a block of one or more commands. */ grub_err_t -grub_script_execute_cmdblock (struct grub_script_cmd *cmd) +grub_script_execute_cmdlist (struct grub_script_cmd *list) { int ret = 0; - struct grub_script_cmdblock *cmdblock = (struct grub_script_cmdblock *) cmd; + struct grub_script_cmd *cmd; /* Loop over every command and execute it. */ - for (cmd = cmdblock->cmdlist; cmd; cmd = cmd->next) + for (cmd = list->next; cmd; cmd = cmd->next) ret = grub_script_execute_cmd (cmd); return ret; diff --git a/script/parser.y b/script/parser.y index b5815ea8d..cc08af37a 100644 --- a/script/parser.y +++ b/script/parser.y @@ -96,9 +96,7 @@ script: newlines0 } | script statement delimiter newlines0 { - struct grub_script_cmdblock *cmdblock; - cmdblock = (struct grub_script_cmdblock *) $1; - $$ = grub_script_add_cmd (state, cmdblock, $2); + $$ = grub_script_append_cmd (state, $1, $2); } | error { @@ -183,13 +181,11 @@ command: grubcmd { $$ = $1; } /* A list of commands. */ commands1: newlines0 command { - $$ = grub_script_add_cmd (state, 0, $2); + $$ = grub_script_append_cmd (state, 0, $2); } | commands1 delimiters1 command { - struct grub_script_cmdblock *cmdblock; - cmdblock = (struct grub_script_cmdblock *) $1; - $$ = grub_script_add_cmd (state, cmdblock, $3); + $$ = grub_script_append_cmd (state, $1, $3); } ; diff --git a/script/script.c b/script/script.c index 4c87d9491..9cee40dcb 100644 --- a/script/script.c +++ b/script/script.c @@ -291,46 +291,40 @@ grub_script_create_cmdmenu (struct grub_parser_param *state, return (struct grub_script_cmd *) cmd; } -/* Create a block of commands. CMD contains the command that should - be added at the end of CMDBLOCK's list. If CMDBLOCK is zero, a new - cmdblock will be created. */ +/* Create a chain of commands. LAST contains the command that should + be added at the end of LIST's list. If LIST is zero, a new list + will be created. */ struct grub_script_cmd * -grub_script_add_cmd (struct grub_parser_param *state, - struct grub_script_cmdblock *cmdblock, - struct grub_script_cmd *cmd) +grub_script_append_cmd (struct grub_parser_param *state, + struct grub_script_cmd *list, + struct grub_script_cmd *last) { struct grub_script_cmd *ptr; - grub_dprintf ("scripting", "cmdblock\n"); + grub_dprintf ("scripting", "append command\n"); - if (!cmd) - return (struct grub_script_cmd *) cmdblock; + if (! last) + return list; - if (!cmdblock) + if (! list) { - cmdblock = grub_script_malloc (state, sizeof (*cmdblock)); - if (!cmdblock) + list = grub_script_malloc (state, sizeof (*list)); + if (! list) return 0; - cmdblock->cmd.exec = grub_script_execute_cmdblock; - cmdblock->cmd.next = 0; - cmdblock->cmdlist = cmd; - cmd->next = 0; + list->exec = grub_script_execute_cmdlist; + list->next = last; } else { - if (!cmdblock->cmdlist) - cmdblock->cmdlist = cmd; - else - { - ptr = cmdblock->cmdlist; - while (ptr->next) - ptr = ptr->next; - ptr->next = cmd; - } + ptr = list; + while (ptr->next) + ptr = ptr->next; + + ptr->next = last; } - return (struct grub_script_cmd *) cmdblock; + return list; } diff --git a/util/grub-script-check.c b/util/grub-script-check.c index dc732aa01..3b7ab295d 100644 --- a/util/grub-script-check.c +++ b/util/grub-script-check.c @@ -70,7 +70,7 @@ grub_script_execute_cmdline (struct grub_script_cmd *cmd __attribute__ ((unused) } grub_err_t -grub_script_execute_cmdblock (struct grub_script_cmd *cmd __attribute__ ((unused))) +grub_script_execute_cmdlist (struct grub_script_cmd *cmd __attribute__ ((unused))) { return 0; }