parse.h

   1 #ifndef PARSE_H
   2 #define PARSE_H
   3 /*
   4  * Basic parsing data structures. Statements and symbols.
   5  *
   6  * Copyright (C) 2003 Transmeta Corp.
   7  *               2003 Linus Torvalds
   8  *
   9  *  Licensed under the Open Software License version 1.1
  10  */
  11
  12 #include "symbol.h"
  13
  14 enum statement_type {
  15         STMT_NONE,
  16         STMT_EXPRESSION,
  17         STMT_COMPOUND,
  18         STMT_IF,
  19         STMT_RETURN,
  20         STMT_CASE,
  21         STMT_SWITCH,
  22         STMT_ITERATOR,
  23         STMT_LABEL,
  24         STMT_GOTO,
  25         STMT_ASM,
  26
  27         /* These only show up after linearization */
  28         STMT_CONDTRUE,
  29         STMT_CONDFALSE,
  30         STMT_MULTIVALUE,
  31         STMT_MULTIJMP,
  32 };
  33
  34 struct statement {
  35         enum statement_type type;
  36         struct position pos;
  37         union {
  38                 struct /* label_arg */ {
  39                         struct symbol *label;
  40                         struct statement *label_statement;
  41                 };
  42                 struct expression *expression;
  43                 struct /* return_statement */ {
  44                         struct expression *ret_value;
  45                         struct symbol *ret_target;
  46                 };
  47                 struct /* if_statement */ {
  48                         struct expression *if_conditional;
  49                         struct statement *if_true;
  50                         struct statement *if_false;
  51                 };
  52                 struct /* compound_struct */ {
  53                         struct symbol_list *syms;
  54                         struct statement_list *stmts;
  55                         struct symbol *ret;
  56                 };
  57                 struct /* labeled_struct */ {
  58                         struct symbol *label_identifier;
  59                         struct statement *label_statement;
  60                 };
  61                 struct /* case_struct */ {
  62                         struct expression *case_expression;
  63                         struct expression *case_to;
  64                         struct statement *case_statement;
  65                         struct symbol *case_label;
  66                 };
  67                 struct /* switch_struct */ {
  68                         struct expression *switch_expression;
  69                         struct statement *switch_statement;
  70                         struct symbol *switch_break, *switch_case;
  71                 };
  72                 struct /* iterator_struct */ {
  73                         struct symbol *iterator_break;
  74                         struct symbol *iterator_continue;
  75                         struct symbol_list *iterator_syms;
  76                         struct statement  *iterator_pre_statement;
  77                         struct expression *iterator_pre_condition;
  78
  79                         struct statement  *iterator_statement;
  80
  81                         struct statement  *iterator_post_statement;
  82                         struct expression *iterator_post_condition;
  83                 };
  84                 struct /* goto_struct */ {
  85                         struct symbol *goto_label;
  86                         struct expression *goto_expression;
  87                 };
  88                 struct /* goto_bb */ {
  89                         struct expression *bb_conditional;
  90                         struct symbol *bb_target;
  91                 };
  92                 struct /* multijmp */ {
  93                         struct expression *multi_from;
  94                         struct expression *multi_to;
  95                         struct symbol *multi_target;
  96                 };
  97         };
  98 };
  99
 100 extern struct token *parse_expression(struct token *, struct expression **);
 101 extern struct token *statement_list(struct token *, struct statement_list **);
 102 extern struct symbol *label_symbol(struct token *token);
 103
 104 extern int show_statement(struct statement *);
 105 extern void show_statement_list(struct statement_list *, const char *);
 106 extern int show_expression(struct expression *);
 107 extern void translation_unit(struct token *, struct symbol_list **);
 108
 109 extern struct symbol *ctype_integer(unsigned int spec);
 110 extern struct symbol *ctype_fp(unsigned int spec);
 111
 112 extern int match_string_ident(struct ident *, const char *);
 113 extern void copy_statement(struct statement *src, struct statement *dst);
 114 extern int inline_function(struct expression *expr, struct symbol *sym);
 115
 116 #endif /* PARSE_H */