git.ozlabs.org Git - petitboot/blob - discover/grub2/parser-api.c

   1
   2 #include <talloc/talloc.h>
   3
   4 #include "grub2.h"
   5
   6 struct grub2_statements *create_statements(struct grub2_parser *parser)
   7 {
   8         struct grub2_statements *stmts = talloc(parser,
   9                         struct grub2_statements);
  10         list_init(&stmts->list);
  11         return stmts;
  12 }
  13
  14 struct grub2_statement *create_statement_simple(struct grub2_parser *parser,
  15                 struct grub2_argv *argv)
  16 {
  17         struct grub2_statement_simple *stmt =
  18                 talloc(parser, struct grub2_statement_simple);
  19         stmt->st.type = STMT_TYPE_SIMPLE;
  20         stmt->st.exec = statement_simple_execute;
  21         stmt->argv = argv;
  22         return &stmt->st;
  23 }
  24
  25 struct grub2_statement *create_statement_menuentry(struct grub2_parser *parser,
  26                 struct grub2_argv *argv, struct grub2_statements *stmts)
  27 {
  28         struct grub2_statement_menuentry *stmt =
  29                 talloc(parser, struct grub2_statement_menuentry);
  30         stmt->st.type = STMT_TYPE_MENUENTRY;
  31         stmt->st.exec = statement_menuentry_execute;
  32         stmt->argv = argv;
  33         stmt->statements = stmts;
  34         return &stmt->st;
  35 }
  36
  37 struct grub2_statement *create_statement_if(struct grub2_parser *parser,
  38                 struct grub2_statement *condition,
  39                 struct grub2_statements *true_case,
  40                 struct grub2_statements *false_case)
  41 {
  42         struct grub2_statement_if *stmt =
  43                 talloc(parser, struct grub2_statement_if);
  44         stmt->st.type = STMT_TYPE_IF;
  45         stmt->st.exec = statement_if_execute;
  46         stmt->condition = condition;
  47         stmt->true_case = true_case;
  48         stmt->false_case = false_case;
  49         return &stmt->st;
  50 }
  51
  52 struct grub2_statement *create_statement_block(struct grub2_parser *parser,
  53                 struct grub2_statements *stmts)
  54 {
  55         struct grub2_statement_block *stmt =
  56                 talloc(parser, struct grub2_statement_block);
  57         stmt->st.type = STMT_TYPE_BLOCK;
  58         stmt->st.exec = NULL;
  59         stmt->statements = stmts;
  60         return &stmt->st;
  61 }
  62
  63 void statement_append(struct grub2_statements *stmts,
  64                 struct grub2_statement *stmt)
  65 {
  66         if (!stmt)
  67                 return;
  68         list_add_tail(&stmts->list, &stmt->list);
  69 }
  70
  71 struct grub2_word *create_word_text(struct grub2_parser *parser,
  72                 const char *text)
  73 {
  74         struct grub2_word *word = talloc(parser, struct grub2_word);
  75         word->type = GRUB2_WORD_TEXT;
  76         word->split = false;
  77         word->text = talloc_strdup(word, text);
  78         word->next = NULL;
  79         word->last = word;
  80         return word;
  81 }
  82
  83 struct grub2_word *create_word_var(struct grub2_parser *parser,
  84                 const char *name, bool split)
  85 {
  86         struct grub2_word *word = talloc(parser, struct grub2_word);
  87         word->type = GRUB2_WORD_VAR;
  88         word->name = talloc_strdup(word, name);
  89         word->split = split;
  90         word->next = NULL;
  91         word->last = word;
  92         return word;
  93 }
  94
  95 struct grub2_argv *create_argv(struct grub2_parser *parser)
  96 {
  97         struct grub2_argv *argv = talloc(parser, struct grub2_argv);
  98         list_init(&argv->words);
  99         return argv;
 100 }
 101
 102 void argv_append(struct grub2_argv *argv, struct grub2_word *word)
 103 {
 104         list_add_tail(&argv->words, &word->argv_list);
 105 }
 106
 107 void word_append(struct grub2_word *w1, struct grub2_word *w2)
 108 {
 109         w1->last->next = w2;
 110         w1->last = w2;
 111 }