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 };
  31
  32 struct statement {
  33         enum statement_type type;
  34         struct position pos;
  35         union {
  36                 struct /* label_arg */ {
  37                         struct symbol *label;
  38                         struct statement *label_statement;
  39                 };
  40                 struct expression *expression;
  41                 struct /* return_statement */ {
  42                         struct expression *ret_value;
  43                         struct symbol *ret_target;
  44                 };
  45                 struct /* if_statement */ {
  46                         struct expression *if_conditional;
  47                         struct statement *if_true;
  48                         struct statement *if_false;
  49                 };
  50                 struct /* compound_struct */ {
  51                         struct symbol_list *syms;
  52                         struct statement_list *stmts;
  53                         struct symbol *ret;
  54                 };
  55                 struct /* labeled_struct */ {
  56                         struct symbol *label_identifier;
  57                         struct statement *label_statement;
  58                 };
  59                 struct /* case_struct */ {
  60                         struct expression *case_expression;
  61                         struct expression *case_to;
  62                         struct statement *case_statement;
  63                         struct symbol *case_label;
  64                 };
  65                 struct /* switch_struct */ {
  66                         struct expression *switch_expression;
  67                         struct statement *switch_statement;
  68                         struct symbol *switch_break, *switch_case;
  69                 };
  70                 struct /* iterator_struct */ {
  71                         struct symbol *iterator_break;
  72                         struct symbol *iterator_continue;
  73                         struct symbol_list *iterator_syms;
  74                         struct statement  *iterator_pre_statement;
  75                         struct expression *iterator_pre_condition;
  76
  77                         struct statement  *iterator_statement;
  78
  79                         struct statement  *iterator_post_statement;
  80                         struct expression *iterator_post_condition;
  81                 };
  82                 struct /* goto_struct */ {
  83                         struct symbol *goto_label;
  84                         struct expression *goto_expression;
  85                 };
  86                 struct /* goto_bb */ {
  87                         struct expression *bb_conditional;
  88                         struct symbol *bb_target;
  89                 };
  90         };
  91 };
  92
  93 extern struct token *parse_expression(struct token *, struct expression **);
  94 extern struct token *statement_list(struct token *, struct statement_list **);
  95 extern struct symbol *label_symbol(struct token *token);
  96
  97 extern int show_statement(struct statement *);
  98 extern void show_statement_list(struct statement_list *, const char *);
  99 extern int show_expression(struct expression *);
 100 extern void translation_unit(struct token *, struct symbol_list **);
 101
 102 extern struct symbol *ctype_integer(unsigned int spec);
 103 extern struct symbol *ctype_fp(unsigned int spec);
 104
 105 extern int match_string_ident(struct ident *, const char *);
 106 extern void copy_statement(struct statement *src, struct statement *dst);
 107 extern int inline_function(struct expression *expr, struct symbol *sym);
 108
 109 #endif /* PARSE_H */