X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fgrub2%2Fgrub2.h;h=1ac9f88db896b257d38c8c9c0347f0b7857b44d7;hp=2c7951a5520c90e4c5b5040f6da81fedc634cb6e;hb=5e1b3c27ab320eae17b9c9d75b4111c924860268;hpb=1284a547ec73795d7d76dc099426fb89c3359f25

diff --git a/discover/grub2/grub2.h b/discover/grub2/grub2.h
index 2c7951a..1ac9f88 100644
--- a/discover/grub2/grub2.h
+++ b/discover/grub2/grub2.h
@@ -1,59 +1,99 @@
 #ifndef GRUB2_H
 #define GRUB2_H
 
+#include <discover/device-handler.h>
+
 #include <stdbool.h>
 #include <list/list.h>
 
-struct grub2_parser;
+struct grub2_script;
 
 struct grub2_word {
-	const char		*text;
-	bool			expand;
+	enum {
+		GRUB2_WORD_TEXT,
+		GRUB2_WORD_VAR,
+	} type;
+	union {
+		char		*text;
+		const char	*name;
+	};
 	bool			split;
 	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 discover_context		*ctx;
+	struct discover_boot_option	*opt;
 };
 
 struct grub2_parser {
 	void			*scanner;
-	struct grub2_statements	*statements;
+	struct grub2_script	*script;
+};
+
+struct grub2_root {
+	char *uuid;
 };
 
 struct grub2_statements *create_statements(struct grub2_parser *parser);
@@ -69,8 +109,14 @@ 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 +127,42 @@ 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(struct grub2_parser *parser,
+		struct discover_context *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);
+
+/* resources */
+struct resource *create_grub2_resource(void *ctx,
+		struct discover_device *orig_device,
+		struct grub2_root *root, const char *path);
+
+bool resolve_grub2_resource(struct device_handler *handler,
+		struct resource *res);
+
+/* external parser api */
+struct grub2_parser *grub2_parser_create(struct discover_context *ctx);
+void grub2_parser_parse(struct grub2_parser *parser, char *buf, int len);
 #endif /* GRUB2_H */