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326 lines
9.5 KiB
326 lines
9.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2002 Roman Zippel <[email protected]> |
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*/ |
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#ifndef EXPR_H |
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#define EXPR_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include <assert.h> |
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#include <stdio.h> |
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#include "list.h" |
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#ifndef __cplusplus |
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#include <stdbool.h> |
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#endif |
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struct file { |
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struct file *next; |
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struct file *parent; |
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const char *name; |
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int lineno; |
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}; |
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typedef enum tristate { |
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no, mod, yes |
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} tristate; |
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enum expr_type { |
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E_NONE, E_OR, E_AND, E_NOT, |
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E_EQUAL, E_UNEQUAL, E_LTH, E_LEQ, E_GTH, E_GEQ, |
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E_LIST, E_SYMBOL, E_RANGE |
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}; |
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union expr_data { |
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struct expr *expr; |
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struct symbol *sym; |
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}; |
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struct expr { |
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enum expr_type type; |
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union expr_data left, right; |
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}; |
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#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2)) |
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#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2)) |
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#define EXPR_NOT(dep) (2-(dep)) |
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#define expr_list_for_each_sym(l, e, s) \ |
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for (e = (l); e && (s = e->right.sym); e = e->left.expr) |
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struct expr_value { |
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struct expr *expr; |
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tristate tri; |
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}; |
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struct symbol_value { |
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void *val; |
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tristate tri; |
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}; |
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enum symbol_type { |
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S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING |
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}; |
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/* enum values are used as index to symbol.def[] */ |
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enum { |
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S_DEF_USER, /* main user value */ |
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S_DEF_AUTO, /* values read from auto.conf */ |
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S_DEF_DEF3, /* Reserved for UI usage */ |
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S_DEF_DEF4, /* Reserved for UI usage */ |
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S_DEF_COUNT |
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}; |
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/* |
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* Represents a configuration symbol. |
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* |
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* Choices are represented as a special kind of symbol and have the |
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* SYMBOL_CHOICE bit set in 'flags'. |
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*/ |
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struct symbol { |
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/* The next symbol in the same bucket in the symbol hash table */ |
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struct symbol *next; |
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/* The name of the symbol, e.g. "FOO" for 'config FOO' */ |
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char *name; |
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/* S_BOOLEAN, S_TRISTATE, ... */ |
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enum symbol_type type; |
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/* |
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* The calculated value of the symbol. The SYMBOL_VALID bit is set in |
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* 'flags' when this is up to date. Note that this value might differ |
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* from the user value set in e.g. a .config file, due to visibility. |
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*/ |
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struct symbol_value curr; |
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/* |
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* Values for the symbol provided from outside. def[S_DEF_USER] holds |
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* the .config value. |
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*/ |
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struct symbol_value def[S_DEF_COUNT]; |
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/* |
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* An upper bound on the tristate value the user can set for the symbol |
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* if it is a boolean or tristate. Calculated from prompt dependencies, |
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* which also inherit dependencies from enclosing menus, choices, and |
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* ifs. If 'n', the user value will be ignored. |
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* |
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* Symbols lacking prompts always have visibility 'n'. |
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*/ |
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tristate visible; |
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/* SYMBOL_* flags */ |
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int flags; |
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/* List of properties. See prop_type. */ |
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struct property *prop; |
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/* Dependencies from enclosing menus, choices, and ifs */ |
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struct expr_value dir_dep; |
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/* Reverse dependencies through being selected by other symbols */ |
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struct expr_value rev_dep; |
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/* |
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* "Weak" reverse dependencies through being implied by other symbols |
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*/ |
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struct expr_value implied; |
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}; |
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#define for_all_symbols(i, sym) for (i = 0; i < SYMBOL_HASHSIZE; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) |
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#define SYMBOL_CONST 0x0001 /* symbol is const */ |
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#define SYMBOL_CHECK 0x0008 /* used during dependency checking */ |
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#define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */ |
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#define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */ |
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#define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */ |
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#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */ |
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#define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */ |
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#define SYMBOL_CHANGED 0x0400 /* ? */ |
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#define SYMBOL_WRITTEN 0x0800 /* track info to avoid double-write to .config */ |
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#define SYMBOL_NO_WRITE 0x1000 /* Symbol for internal use only; it will not be written */ |
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#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */ |
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#define SYMBOL_WARNED 0x8000 /* warning has been issued */ |
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/* Set when symbol.def[] is used */ |
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#define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */ |
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#define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */ |
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#define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */ |
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#define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */ |
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#define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */ |
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/* choice values need to be set before calculating this symbol value */ |
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#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000 |
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#define SYMBOL_MAXLENGTH 256 |
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#define SYMBOL_HASHSIZE 9973 |
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/* A property represent the config options that can be associated |
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* with a config "symbol". |
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* Sample: |
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* config FOO |
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* default y |
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* prompt "foo prompt" |
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* select BAR |
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* config BAZ |
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* int "BAZ Value" |
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* range 1..255 |
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* |
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* Please, also check parser.y:print_symbol() when modifying the |
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* list of property types! |
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*/ |
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enum prop_type { |
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P_UNKNOWN, |
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P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */ |
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P_COMMENT, /* text associated with a comment */ |
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P_MENU, /* prompt associated with a menu or menuconfig symbol */ |
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P_DEFAULT, /* default y */ |
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P_CHOICE, /* choice value */ |
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P_SELECT, /* select BAR */ |
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P_IMPLY, /* imply BAR */ |
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P_RANGE, /* range 7..100 (for a symbol) */ |
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P_SYMBOL, /* where a symbol is defined */ |
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}; |
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struct property { |
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struct property *next; /* next property - null if last */ |
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enum prop_type type; /* type of property */ |
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const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */ |
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struct expr_value visible; |
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struct expr *expr; /* the optional conditional part of the property */ |
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struct menu *menu; /* the menu the property are associated with |
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* valid for: P_SELECT, P_RANGE, P_CHOICE, |
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* P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */ |
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struct file *file; /* what file was this property defined */ |
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int lineno; /* what lineno was this property defined */ |
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}; |
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#define for_all_properties(sym, st, tok) \ |
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for (st = sym->prop; st; st = st->next) \ |
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if (st->type == (tok)) |
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#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT) |
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#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE) |
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#define for_all_prompts(sym, st) \ |
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for (st = sym->prop; st; st = st->next) \ |
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if (st->text) |
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/* |
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* Represents a node in the menu tree, as seen in e.g. menuconfig (though used |
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* for all front ends). Each symbol, menu, etc. defined in the Kconfig files |
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* gets a node. A symbol defined in multiple locations gets one node at each |
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* location. |
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*/ |
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struct menu { |
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/* The next menu node at the same level */ |
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struct menu *next; |
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/* The parent menu node, corresponding to e.g. a menu or choice */ |
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struct menu *parent; |
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/* The first child menu node, for e.g. menus and choices */ |
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struct menu *list; |
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/* |
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* The symbol associated with the menu node. Choices are implemented as |
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* a special kind of symbol. NULL for menus, comments, and ifs. |
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*/ |
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struct symbol *sym; |
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/* |
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* The prompt associated with the node. This holds the prompt for a |
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* symbol as well as the text for a menu or comment, along with the |
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* type (P_PROMPT, P_MENU, etc.) |
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*/ |
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struct property *prompt; |
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/* |
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* 'visible if' dependencies. If more than one is given, they will be |
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* ANDed together. |
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*/ |
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struct expr *visibility; |
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/* |
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* Ordinary dependencies from e.g. 'depends on' and 'if', ANDed |
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* together |
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*/ |
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struct expr *dep; |
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/* MENU_* flags */ |
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unsigned int flags; |
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/* Any help text associated with the node */ |
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char *help; |
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/* The location where the menu node appears in the Kconfig files */ |
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struct file *file; |
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int lineno; |
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/* For use by front ends that need to store auxiliary data */ |
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void *data; |
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}; |
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/* |
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* Set on a menu node when the corresponding symbol changes state in some way. |
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* Can be checked by front ends. |
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*/ |
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#define MENU_CHANGED 0x0001 |
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#define MENU_ROOT 0x0002 |
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struct jump_key { |
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struct list_head entries; |
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size_t offset; |
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struct menu *target; |
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int index; |
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}; |
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extern struct file *file_list; |
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extern struct file *current_file; |
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struct file *lookup_file(const char *name); |
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extern struct symbol symbol_yes, symbol_no, symbol_mod; |
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extern struct symbol *modules_sym; |
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extern int cdebug; |
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struct expr *expr_alloc_symbol(struct symbol *sym); |
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struct expr *expr_alloc_one(enum expr_type type, struct expr *ce); |
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struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2); |
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struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2); |
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struct expr *expr_alloc_and(struct expr *e1, struct expr *e2); |
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struct expr *expr_alloc_or(struct expr *e1, struct expr *e2); |
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struct expr *expr_copy(const struct expr *org); |
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void expr_free(struct expr *e); |
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void expr_eliminate_eq(struct expr **ep1, struct expr **ep2); |
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int expr_eq(struct expr *e1, struct expr *e2); |
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tristate expr_calc_value(struct expr *e); |
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struct expr *expr_trans_bool(struct expr *e); |
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struct expr *expr_eliminate_dups(struct expr *e); |
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struct expr *expr_transform(struct expr *e); |
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int expr_contains_symbol(struct expr *dep, struct symbol *sym); |
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bool expr_depends_symbol(struct expr *dep, struct symbol *sym); |
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struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym); |
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void expr_fprint(struct expr *e, FILE *out); |
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struct gstr; /* forward */ |
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void expr_gstr_print(struct expr *e, struct gstr *gs); |
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void expr_gstr_print_revdep(struct expr *e, struct gstr *gs, |
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tristate pr_type, const char *title); |
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static inline int expr_is_yes(struct expr *e) |
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{ |
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return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes); |
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} |
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static inline int expr_is_no(struct expr *e) |
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{ |
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return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no); |
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} |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* EXPR_H */
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