discover/grub2: Hook up flex/bison parser to discover server

[petitboot] / discover / grub2 / grub2.h

diff --git a/discover/grub2/grub2.h b/discover/grub2/grub2.h
index f2a780d385510317479085e4d29c092e82c28d20..149e1e1fba0e6b6712ad61c98cc8eb5dcbee01aa 100644 (file)
--- a/discover/grub2/grub2.h
+++ b/discover/grub2/grub2.h
@@ -1,10 +1,165 @@
 #ifndef GRUB2_H
 #define GRUB2_H
 
+#include <discover/device-handler.h>
+
+#include <stdbool.h>
+#include <list/list.h>
+
+struct grub2_script;
+
+struct grub2_word {
+       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_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;
+};
+
+struct grub2_script {
+       struct grub2_statements *statements;
+       struct list             environment;
+       struct list             commands;
+       struct list             symtab;
+};
+
 struct grub2_parser {
-       void    *scanner;
+       void                    *scanner;
+       struct grub2_script     *script;
+};
+
+struct grub2_root {
+       char *uuid;
 };
 
+struct grub2_statements *create_statements(struct grub2_parser *parser);
+
+struct grub2_statement *create_statement_simple(struct grub2_parser *parser,
+               struct grub2_argv *argv);
+
+struct grub2_statement *create_statement_menuentry(struct grub2_parser *parser,
+               struct grub2_argv *argv, struct grub2_statements *stmts);
+
+struct grub2_statement *create_statement_if(struct grub2_parser *parser,
+               struct grub2_statement *condition,
+               struct grub2_statements *true_case,
+               struct grub2_statements *false_case);
+
+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);
+
+void statement_append(struct grub2_statements *stmts,
+               struct grub2_statement *stmt);
+
+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);
+
+/* 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(void *ctx);
+void grub2_parser_parse(struct grub2_parser *parser, char *buf, int len);
 #endif /* GRUB2_H */