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_DECLARATION,
  17         STMT_EXPRESSION,
  18         STMT_COMPOUND,
  19         STMT_IF,
  20         STMT_RETURN,
  21         STMT_CASE,
  22         STMT_SWITCH,
  23         STMT_ITERATOR,
  24         STMT_LABEL,
  25         STMT_GOTO,
  26         STMT_ASM,
  27         STMT_CONTEXT,
  28         STMT_RANGE,
  29 };
  30
  31 struct statement {
  32         enum statement_type type;
  33         struct position pos;
  34         union {
  35                 struct /* declaration */ {
  36                         struct symbol_list *declaration;
  37                 };
  38                 struct /* label_arg */ {
  39                         struct symbol *label;
  40                         struct statement *label_statement;
  41                 };
  42                 struct {
  43                         struct expression *expression;
  44                         struct expression *context;
  45                 };
  46                 struct /* return_statement */ {
  47                         struct expression *ret_value;
  48                         struct symbol *ret_target;
  49                 };
  50                 struct /* if_statement */ {
  51                         struct expression *if_conditional;
  52                         struct statement *if_true;
  53                         struct statement *if_false;
  54                 };
  55                 struct /* compound_struct */ {
  56                         struct statement_list *stmts;
  57                         struct symbol *ret;
  58                         struct symbol *inline_fn;
  59                         struct statement *args;
  60                 };
  61                 struct /* labeled_struct */ {
  62                         struct symbol *label_identifier;
  63                         struct statement *label_statement;
  64                 };
  65                 struct /* case_struct */ {
  66                         struct expression *case_expression;
  67                         struct expression *case_to;
  68                         struct statement *case_statement;
  69                         struct symbol *case_label;
  70                 };
  71                 struct /* switch_struct */ {
  72                         struct expression *switch_expression;
  73                         struct statement *switch_statement;
  74                         struct symbol *switch_break, *switch_case;
  75                 };
  76                 struct /* iterator_struct */ {
  77                         struct symbol *iterator_break;
  78                         struct symbol *iterator_continue;
  79                         struct symbol_list *iterator_syms;
  80                         struct statement  *iterator_pre_statement;
  81                         struct expression *iterator_pre_condition;
  82
  83                         struct statement  *iterator_statement;
  84
  85                         struct statement  *iterator_post_statement;
  86                         struct expression *iterator_post_condition;
  87                 };
  88                 struct /* goto_struct */ {
  89                         struct symbol *goto_label;
  90
  91                         /* computed gotos have these: */
  92                         struct expression *goto_expression;
  93                         struct symbol_list *target_list;
  94                 };
  95                 struct /* goto_bb */ {
  96                         struct expression *bb_conditional;
  97                         struct symbol *bb_target;
  98                 };
  99                 struct /* multijmp */ {
 100                         struct expression *multi_from;
 101                         struct expression *multi_to;
 102                         struct symbol *multi_target;
 103                 };
 104                 struct /* asm */ {
 105                         struct expression *asm_string;
 106                         struct expression_list *asm_outputs;
 107                         struct expression_list *asm_inputs;
 108                         struct expression_list *asm_clobbers;
 109                 };
 110                 struct /* range */ {
 111                         struct expression *range_expression;
 112                         struct expression *range_low;
 113                         struct expression *range_high;
 114                 };
 115         };
 116 };
 117
 118 extern struct symbol_list *function_computed_target_list;
 119 extern struct statement_list *function_computed_goto_list;
 120
 121 extern struct token *parse_expression(struct token *, struct expression **);
 122 extern struct symbol *label_symbol(struct token *token);
 123
 124 extern int show_statement(struct statement *);
 125 extern void show_statement_list(struct statement_list *, const char *);
 126 extern int show_expression(struct expression *);
 127
 128 extern struct token *external_declaration(struct token *token, struct symbol_list **list);
 129
 130 extern struct symbol *ctype_integer(int size, int want_unsigned);
 131
 132 extern void copy_statement(struct statement *src, struct statement *dst);
 133 extern int inline_function(struct expression *expr, struct symbol *sym);
 134 extern void uninline(struct symbol *sym);
 135 extern void init_parser(int);
 136
 137 #endif /* PARSE_H */