discover/grub2: Add structures & API for parser

[petitboot] / discover / grub2 / parser-api.c

diff --git a/discover/grub2/parser-api.c b/discover/grub2/parser-api.c
new file mode 100644 (file)
index 0000000..6e05ecf
--- /dev/null
+++ b/discover/grub2/parser-api.c
@@ -0,0 +1,79 @@
+
+#include <talloc/talloc.h>
+
+#include "grub2.h"
+
+struct grub2_statements *create_statements(struct grub2_parser *parser)
+{
+       struct grub2_statements *stmts = talloc(parser,
+                       struct grub2_statements);
+       list_init(&stmts->list);
+       return stmts;
+}
+
+struct grub2_statement *create_statement_simple(struct grub2_parser *parser,
+               struct grub2_argv *argv)
+{
+       struct grub2_statement *stmt = talloc(parser, struct grub2_statement);
+       stmt->type = STMT_TYPE_SIMPLE;
+       stmt->simple.argv = argv;
+       return stmt;
+}
+
+struct grub2_statement *create_statement_menuentry(struct grub2_parser *parser,
+               struct grub2_argv *argv, struct grub2_statements *stmts)
+{
+       struct grub2_statement *stmt = talloc(parser, struct grub2_statement);
+       stmt->type = STMT_TYPE_MENUENTRY;
+       stmt->menuentry.argv = argv;
+       stmt->menuentry.statements = stmts;
+       return stmt;
+}
+
+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 *stmt = talloc(parser, struct grub2_statement);
+       stmt->type = STMT_TYPE_IF;
+       stmt->ifstmt.condition = condition;
+       stmt->ifstmt.true_case = true_case;
+       stmt->ifstmt.false_case = false_case;
+       return stmt;
+}
+void statement_append(struct grub2_statements *stmts,
+               struct grub2_statement *stmt)
+{
+       if (!stmt)
+               return;
+       list_add_tail(&stmts->list, &stmt->list);
+}
+
+struct grub2_word *create_word(struct grub2_parser *parser, const char *text,
+               bool expand, bool split)
+{
+       struct grub2_word *word = talloc(parser, struct grub2_word);
+       word->text = talloc_strdup(word, text);
+       word->expand = expand;
+       word->split = split;
+       word->next = NULL;
+       return word;
+}
+
+struct grub2_argv *create_argv(struct grub2_parser *parser)
+{
+       struct grub2_argv *argv = talloc(parser, struct grub2_argv);
+       list_init(&argv->words);
+       return argv;
+}
+
+void argv_append(struct grub2_argv *argv, struct grub2_word *word)
+{
+       list_add_tail(&argv->words, &word->argv_list);
+}
+
+void word_append(struct grub2_word *w1, struct grub2_word *w2)
+{
+       w1->next = w2;
+}