X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=discover%2Fgrub2%2Fgrub2.h;h=60a573456d3afa286400a7f7e9f2629b0947f0ef;hb=5c6c8ea8ca66fe70563143cb226852a10b1a98fb;hp=2c7951a5520c90e4c5b5040f6da81fedc634cb6e;hpb=1284a547ec73795d7d76dc099426fb89c3359f25;p=petitboot

diff --git a/discover/grub2/grub2.h b/discover/grub2/grub2.h
index 2c7951a..60a5734 100644
--- a/discover/grub2/grub2.h
+++ b/discover/grub2/grub2.h
@@ -4,56 +4,90 @@
 #include <stdbool.h>
 #include <list/list.h>
 
-struct grub2_parser;
+struct grub2_script;
 
 struct grub2_word {
-	const char		*text;
-	bool			expand;
-	bool			split;
+	enum {
+		GRUB2_WORD_TEXT,
+		GRUB2_WORD_VAR,
+	} type;
+	union {
+		char	*text;
+		struct {
+			const char	*name;
+			bool		split;
+		} var;
+	};
 	struct grub2_word	*next;
+	struct grub2_word	*last;
 	struct list_item	argv_list;
 };
 
 struct grub2_argv {
 	struct list		words;
+
+	/* postprocessing (with process_expansions) populates these to hand to
+	 * the grub2_command callbacks */
+	char			**argv;
+	int			argc;
+};
+
+struct grub2_statements {
+	struct list		list;
+};
+
+struct grub2_statement {
+	struct list_item	list;
+	enum {
+		STMT_TYPE_SIMPLE,
+		STMT_TYPE_MENUENTRY,
+		STMT_TYPE_IF,
+		STMT_TYPE_BLOCK,
+	} type;
+	int			(*exec)(struct grub2_script *,
+					struct grub2_statement *);
 };
 
 struct grub2_statement_simple {
+	struct grub2_statement	st;
 	struct grub2_argv	*argv;
 };
 
 struct grub2_statement_menuentry {
+	struct grub2_statement	st;
 	struct grub2_argv	*argv;
 	struct grub2_statements	*statements;
 };
 
 struct grub2_statement_if {
+	struct grub2_statement	st;
 	struct grub2_statement	*condition;
 	struct grub2_statements	*true_case;
 	struct grub2_statements	*false_case;
 };
 
-struct grub2_statement {
+struct grub2_statement_block {
+	struct grub2_statement	st;
+	struct grub2_statements	*statements;
+};
+
+struct grub2_command {
+	const char		*name;
+	int			(*exec)(struct grub2_script *script,
+					int argc, char *argv[]);
 	struct list_item	list;
-	enum {
-		STMT_TYPE_SIMPLE,
-		STMT_TYPE_MENUENTRY,
-		STMT_TYPE_IF,
-	} type;
-	union {
-		struct grub2_statement_simple		simple;
-		struct grub2_statement_menuentry	menuentry;
-		struct grub2_statement_if		ifstmt;
-	};
 };
 
-struct grub2_statements {
-	struct list		list;
+struct grub2_script {
+	struct grub2_statements	*statements;
+	struct list		environment;
+	struct list		commands;
+	struct list		symtab;
 };
 
 struct grub2_parser {
 	void			*scanner;
-	struct grub2_statements	*statements;
+	struct grub2_script	*script;
 };
 
 struct grub2_statements *create_statements(struct grub2_parser *parser);
@@ -69,8 +103,14 @@ struct grub2_statement *create_statement_if(struct grub2_parser *parser,
 		struct grub2_statements *true_case,
 		struct grub2_statements *false_case);
 
-struct grub2_word *create_word(struct grub2_parser *parser, const char *text,
-		bool expand, bool split);
+struct grub2_statement *create_statement_block(struct grub2_parser *parser,
+		struct grub2_statements *stmts);
+
+struct grub2_word *create_word_text(struct grub2_parser *parser,
+		const char *text);
+
+struct grub2_word *create_word_var(struct grub2_parser *parser,
+		const char *name, bool split);
 
 struct grub2_argv *create_argv(struct grub2_parser *parser);
 
@@ -81,5 +121,29 @@ void argv_append(struct grub2_argv *argv, struct grub2_word *word);
 
 void word_append(struct grub2_word *w1, struct grub2_word *w2);
 
+/* script interface */
+void script_execute(struct grub2_script *script);
+
+int statement_simple_execute(struct grub2_script *script,
+		struct grub2_statement *statement);
+int statement_if_execute(struct grub2_script *script,
+		struct grub2_statement *statement);
+int statement_menuentry_execute(struct grub2_script *script,
+		struct grub2_statement *statement);
+
+struct grub2_script *create_script(void *ctx);
+
+const char *script_env_get(struct grub2_script *script, const char *name);
+
+void script_env_set(struct grub2_script *script,
+		const char *name, const char *value);
+
+void script_register_command(struct grub2_script *script,
+		struct grub2_command *command);
+
+struct grub2_command *script_lookup_command(struct grub2_script *script,
+		const char *name);
+
+void register_builtins(struct grub2_script *script);
 #endif /* GRUB2_H */