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         STMT_INTERNAL,
  27 };
  28
  29 struct statement {
  30         enum statement_type type;
  31         struct position pos;
  32         union {
  33                 struct /* label_arg */ {
  34                         struct symbol *label;
  35                         struct statement *label_statement;
  36                 };
  37                 struct expression *expression;
  38                 struct /* return_statement */ {
  39                         struct expression *ret_value;
  40                         struct symbol *ret_target;
  41                 };
  42                 struct /* if_statement */ {
  43                         struct expression *if_conditional;
  44                         struct statement *if_true;
  45                         struct statement *if_false;
  46                 };
  47                 struct /* compound_struct */ {
  48                         struct symbol_list *syms;
  49                         struct statement_list *stmts;
  50                         struct symbol *ret;
  51                 };
  52                 struct /* labeled_struct */ {
  53                         struct symbol *label_identifier;
  54                         struct statement *label_statement;
  55                 };
  56                 struct /* case_struct */ {
  57                         struct expression *case_expression;
  58                         struct expression *case_to;
  59                         struct statement *case_statement;
  60                         struct symbol *case_label;
  61                 };
  62                 struct /* switch_struct */ {
  63                         struct expression *switch_expression;
  64                         struct statement *switch_statement;
  65                         struct symbol *switch_break, *switch_case;
  66                 };
  67                 struct /* iterator_struct */ {
  68                         struct symbol *iterator_break;
  69                         struct symbol *iterator_continue;
  70                         struct symbol_list *iterator_syms;
  71                         struct statement  *iterator_pre_statement;
  72                         struct expression *iterator_pre_condition;
  73
  74                         struct statement  *iterator_statement;
  75
  76                         struct statement  *iterator_post_statement;
  77                         struct expression *iterator_post_condition;
  78                 };
  79                 struct /* goto_struct */ {
  80                         struct symbol *goto_label;
  81
  82                         /* computed gotos have these: */
  83                         struct expression *goto_expression;
  84                         struct symbol_list *target_list;
  85                 };
  86                 struct /* goto_bb */ {
  87                         struct expression *bb_conditional;
  88                         struct symbol *bb_target;
  89                 };
  90                 struct /* multijmp */ {
  91                         struct expression *multi_from;
  92                         struct expression *multi_to;
  93                         struct symbol *multi_target;
  94                 };
  95                 struct /* asm */ {
  96                         struct expression *asm_string;
  97                         struct expression_list *asm_outputs;
  98                         struct expression_list *asm_inputs;
  99                         struct expression_list *asm_clobbers;
 100                 };
 101         };
 102 };
 103
 104 extern struct symbol_list *function_computed_target_list;
 105 extern struct statement_list *function_computed_goto_list;
 106
 107 extern struct token *parse_expression(struct token *, struct expression **);
 108 extern struct symbol *label_symbol(struct token *token);
 109
 110 extern int show_statement(struct statement *);
 111 extern void show_statement_list(struct statement_list *, const char *);
 112 extern int show_expression(struct expression *);
 113 extern struct symbol_list *translation_unit(struct token *);
 114
 115 extern struct symbol *ctype_integer(unsigned long spec);
 116 extern struct symbol *ctype_fp(unsigned long spec);
 117
 118 extern void copy_statement(struct statement *src, struct statement *dst);
 119 extern int inline_function(struct expression *expr, struct symbol *sym);
 120 extern void uninline(struct symbol *sym);
 121
 122 #endif /* PARSE_H */