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_CONTEXT,
  27         STMT_RANGE,
  28 };
  29
  30 struct statement {
  31         enum statement_type type;
  32         struct position pos;
  33         union {
  34                 struct /* label_arg */ {
  35                         struct symbol *label;
  36                         struct statement *label_statement;
  37                 };
  38                 struct expression *expression;
  39                 struct /* return_statement */ {
  40                         struct expression *ret_value;
  41                         struct symbol *ret_target;
  42                 };
  43                 struct /* if_statement */ {
  44                         struct expression *if_conditional;
  45                         struct statement *if_true;
  46                         struct statement *if_false;
  47                 };
  48                 struct /* compound_struct */ {
  49                         struct symbol_list *syms;
  50                         struct statement_list *stmts;
  51                         struct symbol *ret;
  52                 };
  53                 struct /* labeled_struct */ {
  54                         struct symbol *label_identifier;
  55                         struct statement *label_statement;
  56                 };
  57                 struct /* case_struct */ {
  58                         struct expression *case_expression;
  59                         struct expression *case_to;
  60                         struct statement *case_statement;
  61                         struct symbol *case_label;
  62                 };
  63                 struct /* switch_struct */ {
  64                         struct expression *switch_expression;
  65                         struct statement *switch_statement;
  66                         struct symbol *switch_break, *switch_case;
  67                 };
  68                 struct /* iterator_struct */ {
  69                         struct symbol *iterator_break;
  70                         struct symbol *iterator_continue;
  71                         struct symbol_list *iterator_syms;
  72                         struct statement  *iterator_pre_statement;
  73                         struct expression *iterator_pre_condition;
  74
  75                         struct statement  *iterator_statement;
  76
  77                         struct statement  *iterator_post_statement;
  78                         struct expression *iterator_post_condition;
  79                 };
  80                 struct /* goto_struct */ {
  81                         struct symbol *goto_label;
  82
  83                         /* computed gotos have these: */
  84                         struct expression *goto_expression;
  85                         struct symbol_list *target_list;
  86                 };
  87                 struct /* goto_bb */ {
  88                         struct expression *bb_conditional;
  89                         struct symbol *bb_target;
  90                 };
  91                 struct /* multijmp */ {
  92                         struct expression *multi_from;
  93                         struct expression *multi_to;
  94                         struct symbol *multi_target;
  95                 };
  96                 struct /* asm */ {
  97                         struct expression *asm_string;
  98                         struct expression_list *asm_outputs;
  99                         struct expression_list *asm_inputs;
 100                         struct expression_list *asm_clobbers;
 101                 };
 102                 struct /* range */ {
 103                         struct expression *range_expression;
 104                         struct expression *range_low;
 105                         struct expression *range_high;
 106                 };
 107         };
 108 };
 109
 110 extern struct symbol_list *function_computed_target_list;
 111 extern struct statement_list *function_computed_goto_list;
 112
 113 extern struct token *parse_expression(struct token *, struct expression **);
 114 extern struct symbol *label_symbol(struct token *token);
 115
 116 extern int show_statement(struct statement *);
 117 extern void show_statement_list(struct statement_list *, const char *);
 118 extern int show_expression(struct expression *);
 119
 120 extern struct token *external_declaration(struct token *token, struct symbol_list **list);
 121
 122 extern struct symbol *ctype_integer(unsigned long spec);
 123 extern struct symbol *ctype_fp(unsigned long spec);
 124
 125 extern void copy_statement(struct statement *src, struct statement *dst);
 126 extern int inline_function(struct expression *expr, struct symbol *sym);
 127 extern void uninline(struct symbol *sym);
 128
 129 #endif /* PARSE_H */