1 | /* |
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2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
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3 | * Released under the terms of the GNU GPL v2.0. |
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4 | */ |
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5 | |
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6 | #ifndef EXPR_H |
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7 | #define EXPR_H |
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8 | |
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9 | #ifdef __cplusplus |
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10 | extern "C" { |
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11 | #endif |
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12 | |
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13 | #include <stdio.h> |
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14 | #ifndef __cplusplus |
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15 | #include <stdbool.h> |
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16 | #endif |
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17 | |
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18 | struct file { |
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19 | struct file *next; |
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20 | struct file *parent; |
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21 | char *name; |
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22 | int lineno; |
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23 | int flags; |
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24 | }; |
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25 | |
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26 | #define FILE_BUSY 0x0001 |
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27 | #define FILE_SCANNED 0x0002 |
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28 | #define FILE_PRINTED 0x0004 |
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29 | |
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30 | typedef enum tristate { |
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31 | no, mod, yes |
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32 | } tristate; |
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33 | |
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34 | enum expr_type { |
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35 | E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE |
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36 | }; |
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37 | |
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38 | union expr_data { |
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39 | struct expr *expr; |
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40 | struct symbol *sym; |
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41 | }; |
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42 | |
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43 | struct expr { |
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44 | enum expr_type type; |
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45 | union expr_data left, right; |
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46 | }; |
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47 | |
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48 | #define E_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) |
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49 | #define E_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) |
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50 | #define E_NOT(dep) (2-(dep)) |
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51 | |
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52 | struct expr_value { |
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53 | struct expr *expr; |
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54 | tristate tri; |
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55 | }; |
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56 | |
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57 | struct symbol_value { |
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58 | void *val; |
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59 | tristate tri; |
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60 | }; |
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61 | |
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62 | enum symbol_type { |
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63 | S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER |
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64 | }; |
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65 | |
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66 | struct symbol { |
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67 | struct symbol *next; |
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68 | char *name; |
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69 | char *help; |
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70 | enum symbol_type type; |
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71 | struct symbol_value curr, user; |
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72 | tristate visible; |
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73 | int flags; |
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74 | struct property *prop; |
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75 | struct expr *dep, *dep2; |
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76 | struct expr_value rev_dep; |
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77 | struct expr_value rev_dep_inv; |
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78 | }; |
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79 | |
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80 | #define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER) |
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81 | |
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82 | #define SYMBOL_YES 0x0001 |
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83 | #define SYMBOL_MOD 0x0002 |
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84 | #define SYMBOL_NO 0x0004 |
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85 | #define SYMBOL_CONST 0x0007 |
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86 | #define SYMBOL_CHECK 0x0008 |
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87 | #define SYMBOL_CHOICE 0x0010 |
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88 | #define SYMBOL_CHOICEVAL 0x0020 |
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89 | #define SYMBOL_PRINTED 0x0040 |
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90 | #define SYMBOL_VALID 0x0080 |
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91 | #define SYMBOL_OPTIONAL 0x0100 |
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92 | #define SYMBOL_WRITE 0x0200 |
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93 | #define SYMBOL_CHANGED 0x0400 |
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94 | #define SYMBOL_NEW 0x0800 |
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95 | #define SYMBOL_AUTO 0x1000 |
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96 | #define SYMBOL_CHECKED 0x2000 |
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97 | #define SYMBOL_WARNED 0x8000 |
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98 | |
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99 | #define SYMBOL_MAXLENGTH 256 |
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100 | #define SYMBOL_HASHSIZE 257 |
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101 | #define SYMBOL_HASHMASK 0xff |
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102 | |
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103 | enum prop_type { |
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104 | P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_DESELECT, P_SELECT, P_RANGE, P_RESET |
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105 | }; |
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106 | |
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107 | struct property { |
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108 | struct property *next; |
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109 | struct symbol *sym; |
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110 | enum prop_type type; |
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111 | const char *text; |
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112 | struct expr_value visible; |
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113 | struct expr *expr; |
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114 | struct menu *menu; |
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115 | struct file *file; |
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116 | int lineno; |
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117 | }; |
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118 | |
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119 | #define for_all_properties(sym, st, tok) \ |
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120 | for (st = sym->prop; st; st = st->next) \ |
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121 | if (st->type == (tok)) |
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122 | #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) |
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123 | #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) |
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124 | #define for_all_prompts(sym, st) \ |
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125 | for (st = sym->prop; st; st = st->next) \ |
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126 | if (st->text) |
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127 | |
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128 | struct menu { |
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129 | struct menu *next; |
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130 | struct menu *parent; |
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131 | struct menu *list; |
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132 | struct symbol *sym; |
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133 | struct property *prompt; |
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134 | struct expr *dep; |
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135 | unsigned int flags; |
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136 | //char *help; |
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137 | struct file *file; |
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138 | int lineno; |
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139 | void *data; |
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140 | }; |
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141 | |
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142 | #define MENU_CHANGED 0x0001 |
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143 | #define MENU_ROOT 0x0002 |
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144 | |
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145 | #ifndef SWIG |
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146 | |
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147 | extern struct file *file_list; |
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148 | extern struct file *current_file; |
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149 | struct file *lookup_file(const char *name); |
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150 | |
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151 | extern struct symbol symbol_yes, symbol_no, symbol_mod; |
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152 | extern struct symbol *modules_sym; |
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153 | extern int cdebug; |
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154 | struct expr *expr_alloc_symbol(struct symbol *sym); |
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155 | struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); |
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156 | struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); |
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157 | struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); |
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158 | struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); |
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159 | struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); |
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160 | struct expr *expr_copy(struct expr *org); |
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161 | void expr_free(struct expr *e); |
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162 | int expr_eq(struct expr *e1, struct expr *e2); |
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163 | void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); |
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164 | tristate expr_calc_value(struct expr *e); |
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165 | struct expr *expr_eliminate_yn(struct expr *e); |
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166 | struct expr *expr_trans_bool(struct expr *e); |
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167 | struct expr *expr_eliminate_dups(struct expr *e); |
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168 | struct expr *expr_transform(struct expr *e); |
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169 | int expr_contains_symbol(struct expr *dep, struct symbol *sym); |
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170 | bool expr_depends_symbol(struct expr *dep, struct symbol *sym); |
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171 | struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2); |
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172 | struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2); |
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173 | void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2); |
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174 | struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); |
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175 | |
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176 | void expr_fprint(struct expr *e, FILE *out); |
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177 | struct gstr; /* forward */ |
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178 | void expr_gstr_print(struct expr *e, struct gstr *gs); |
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179 | |
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180 | static inline int expr_is_yes(struct expr *e) |
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181 | { |
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182 | return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); |
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183 | } |
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184 | |
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185 | static inline int expr_is_no(struct expr *e) |
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186 | { |
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187 | return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); |
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188 | } |
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189 | #endif |
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190 | |
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191 | #ifdef __cplusplus |
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192 | } |
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193 | #endif |
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194 | |
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195 | #endif /* EXPR_H */ |
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