discover/grub2: Handle var tokens in lexer

[petitboot] / discover / grub2 / grub2.h

diff --git a/discover/grub2/grub2.h b/discover/grub2/grub2.h
index cc817ff4b9eae7e29fb6ebbcebf5775d3376f293..cbd69dc70188b27cd5ae8c77fc4ce404b3c0de3d 100644 (file)
--- a/discover/grub2/grub2.h
+++ b/discover/grub2/grub2.h
@@ -4,12 +4,20 @@
 #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 list_item        argv_list;
 };
@@ -18,48 +26,53 @@ struct grub2_argv {
        struct list             words;
 };
 
+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_statement {
-       struct list_item        list;
-       enum {
-               STMT_TYPE_SIMPLE,
-               STMT_TYPE_MENUENTRY,
-               STMT_TYPE_IF,
-               STMT_TYPE_BLOCK,
-       } type;
-       union {
-               struct grub2_statement_simple           simple;
-               struct grub2_statement_menuentry        menuentry;
-               struct grub2_statement_if               ifstmt;
-               struct grub2_statement_block            block;
-       };
-};
-
-struct grub2_statements {
-       struct list             list;
+struct grub2_script {
+       struct grub2_statements *statements;
+       struct list             environment;
 };
 
 struct grub2_parser {
        void                    *scanner;
-       struct grub2_statements *statements;
+       struct grub2_script     *script;
 };
 
 struct grub2_statements *create_statements(struct grub2_parser *parser);
@@ -78,8 +91,11 @@ struct grub2_statement *create_statement_if(struct grub2_parser *parser,
 struct grub2_statement *create_statement_block(struct grub2_parser *parser,
                struct grub2_statements *stmts);
 
-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);
 
@@ -90,5 +106,15 @@ 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);
+
+struct grub2_script *create_script(void *ctx);
+
 #endif /* GRUB2_H */