#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,
+ 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_if {
+struct grub2_statement_conditional {
+ struct grub2_statement st;
struct grub2_statement *condition;
- struct grub2_statements *true_case;
- struct grub2_statements *false_case;
+ struct grub2_statements *statements;
};
-struct grub2_statement {
- 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_statement_if {
+ struct grub2_statement st;
+ struct grub2_statements *conditionals;
+ struct grub2_statements *else_case;
};
-struct grub2_statements {
- struct list list;
+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_statement_for {
+ struct grub2_statement st;
+ struct grub2_word *var;
+ struct grub2_argv *list;
+ 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;
+ const char *filename;
+ unsigned int n_options;
};
struct grub2_parser {
void *scanner;
- struct grub2_statements *statements;
+ 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_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 *condition,
- struct grub2_statements *true_case,
- struct grub2_statements *false_case);
+ 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_statement *create_statement_for(struct grub2_parser *parser,
+ struct grub2_word *var, struct grub2_argv *list,
+ struct grub2_statements *body);
-struct grub2_word *create_word(struct grub2_parser *parser, const char *text,
- bool expand, bool split);
+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 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);
+int statement_for_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, const char *filename,
+ char *buf, int len);
#endif /* GRUB2_H */
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