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#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,
STMT_TYPE_CONDITIONAL,
} 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_conditional {
struct grub2_statement st;
struct grub2_statement *condition;
struct grub2_statements *statements;
};
struct grub2_statement_if {
struct grub2_statement st;
struct grub2_statements *conditionals;
struct grub2_statements *else_case;
};
struct grub2_statement_block {
struct grub2_statement st;
struct grub2_statements *statements;
};
struct grub2_statement_function {
struct grub2_statement st;
struct grub2_word *name;
struct grub2_statements *body;
};
struct grub2_script {
struct grub2_statements *statements;
struct list environment;
struct list symtab;
struct discover_context *ctx;
struct discover_boot_option *opt;
unsigned int n_options;
};
struct grub2_parser {
void *scanner;
struct grub2_script *script;
};
/* type for builtin functions */
typedef int (*grub2_function)(struct grub2_script *script, void *data,
int argc, char *argv[]);
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_conditional(
struct grub2_parser *parser, struct grub2_statement *condition,
struct grub2_statements *statements);
struct grub2_statement *create_statement_if(struct grub2_parser *parser,
struct grub2_statement *conditional,
struct grub2_statements *elifs,
struct grub2_statements *else_case);
struct grub2_statement *create_statement_block(struct grub2_parser *parser,
struct grub2_statements *stmts);
struct grub2_statement *create_statement_function(struct grub2_parser *parser,
struct grub2_word *name, struct grub2_statements *body);
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_block_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);
int statement_function_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_function(struct grub2_script *script,
const char *name, grub2_function fn, void *data);
void register_builtins(struct grub2_script *script);
/* resources */
struct resource *create_grub2_resource(struct discover_boot_option *opt,
struct discover_device *orig_device,
const char *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 */
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