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_GOTO_BB,
  29 };
  30
  31 struct statement {
  32         enum statement_type type;
  33         struct position pos;
  34         union {
  35                 struct /* label_arg */ {
  36                         struct symbol *label;
  37                         struct statement *label_statement;
  38                 };
  39                 struct expression *expression;
  40                 struct /* return_statement */ {
  41                         struct expression *ret_value;
  42                         struct symbol *ret_target;
  43                 };
  44                 struct /* if_statement */ {
  45                         struct expression *if_conditional;
  46                         struct statement *if_true;
  47                         struct statement *if_false;
  48                 };
  49                 struct /* compound_struct */ {
  50                         struct symbol_list *syms;
  51                         struct statement_list *stmts;
  52                         struct symbol *ret;
  53                 };
  54                 struct /* labeled_struct */ {
  55                         struct symbol *label_identifier;
  56                         struct statement *label_statement;
  57                 };
  58                 struct /* case_struct */ {
  59                         struct expression *case_expression;
  60                         struct expression *case_to;
  61                         struct statement *case_statement;
  62                         struct symbol *case_label;
  63                 };
  64                 struct /* switch_struct */ {
  65                         struct expression *switch_expression;
  66                         struct statement *switch_statement;
  67                         struct symbol *switch_break, *switch_case;
  68                 };
  69                 struct /* iterator_struct */ {
  70                         struct symbol *iterator_break;
  71                         struct symbol *iterator_continue;
  72                         struct symbol_list *iterator_syms;
  73                         struct statement  *iterator_pre_statement;
  74                         struct expression *iterator_pre_condition;
  75
  76                         struct statement  *iterator_statement;
  77
  78                         struct statement  *iterator_post_statement;
  79                         struct expression *iterator_post_condition;
  80                 };
  81                 struct /* goto_struct */ {
  82                         struct symbol *goto_label;
  83                         struct expression *goto_expression;
  84                 };
  85                 struct /* goto_bb */ {
  86                         struct expression *bb_conditional;
  87                         struct symbol *bb_target;
  88                 };
  89         };
  90 };
  91
  92 extern struct token *parse_expression(struct token *, struct expression **);
  93 extern struct token *statement_list(struct token *, struct statement_list **);
  94 extern struct symbol *label_symbol(struct token *token);
  95
  96 extern int show_statement(struct statement *);
  97 extern void show_statement_list(struct statement_list *, const char *);
  98 extern int show_expression(struct expression *);
  99 extern void translation_unit(struct token *, struct symbol_list **);
 100
 101 extern struct symbol *ctype_integer(unsigned int spec);
 102 extern struct symbol *ctype_fp(unsigned int spec);
 103
 104 extern int match_string_ident(struct ident *, const char *);
 105 extern void copy_statement(struct statement *src, struct statement *dst);
 106 extern int inline_function(struct expression *expr, struct symbol *sym);
 107
 108 #endif /* PARSE_H */