umpf.h

   1 #include "lists.h"
   2
   3 /* cond.h */
   4 int yylex (void);
   5 void yyerror (char const *);
   6
   7 enum keyword {
   8         K_DISCARD,
   9         K_COPY,
  10         K_MAIL,
  11         K_PIPE,
  12         K_EMPTY
  13 };
  14
  15 struct tree {
  16         enum {
  17                 ST_IF,
  18                 ST_COND,
  19                 ST_BLOCK,
  20                 ST_ASS,
  21                 ST_LEAF,
  22                 ST_EMPTY,
  23                 ST_ARROW,
  24                 ST_OP
  25         } st;   /* subtree type */
  26         union {
  27                 struct {
  28                         struct tree* c; /* condition */
  29                         struct tree* i; /* if */
  30                         struct tree* e; /* else */
  31                 } tif;
  32
  33                 struct {
  34                         enum {
  35                                 OP_REL,
  36                                 OP_BOOL,
  37                                 JUST_BOOL /* value only in left, no op */
  38                         } type;
  39                         int op;
  40                         struct tree* left;
  41                         struct tree* right;
  42                 } cond; /* binary operator */
  43
  44                 struct {
  45                         struct tree* head;
  46                         struct tree* tail;
  47                 } block;
  48
  49                 struct {
  50                         struct tree* left;
  51                         struct tree* right;
  52                 } ass;
  53
  54                 struct {
  55                         enum {
  56                                 L_VAR,
  57                                 L_CONST,
  58                         } type;
  59                         char* value;
  60                         int n;
  61                 } leaf;
  62
  63                 struct {
  64                         enum keyword left;
  65                         enum keyword right;
  66                         struct tree* s;
  67                 } arrow;
  68
  69                 struct {
  70                         int op;
  71                         struct tree* left;
  72                         struct tree* right;
  73                 } op;
  74
  75         } pt;
  76 };
  77
  78 struct tree* input_tree;
  79
  80 /* lex.c */
  81 #define CC(a,b) ((a<<8)|b)
  82 void* xmalloc(size_t size);
  83 void* xrealloc(void* buf, size_t size);
  84 char* xstrdup(char* s);
  85 void __attribute__ ((noreturn)) die(char* msg, ...);
  86 void read_conf(char* filename);
  87 int line;
  88 FILE* conf;
  89
  90 /* code.c */
  91 #define BUFSIZE 4096
  92 #define HASHSIZE 103
  93 #define MAGIC 19
  94
  95 struct code {
  96         struct node car;
  97         enum {
  98                 OPC_SET,
  99                 OPC_JUMP,
 100                 OPC_JUMP_IF,
 101                 OPC_JUMP_UNLESS,
 102                 OPC_DELIVER,
 103                 OPC_CALL_EXT,
 104                 OPC_NOP,
 105                 OPC_CAT,
 106                 OPC_GT,
 107                 OPC_LT,
 108                 OPC_LE,
 109                 OPC_GE,
 110                 OPC_EQ,
 111                 OPC_NEQ,
 112                 OPC_RE,
 113                 OPC_NRE,
 114                 OPC_AND,
 115                 OPC_OR,
 116                 OPC_XOR,
 117                 OPC_NOT,
 118                 OPC_PLUS,
 119                 OPC_MINUS,
 120                 OPC_MUL,
 121                 OPC_DIV,
 122                 OPC_PIPE,
 123                 OPC_MAIL,
 124                 OPC_DISCARD
 125         } opcode;
 126
 127         union {
 128                 struct {
 129                         struct code* target;
 130                 } jump;
 131                 struct {
 132                         struct code* target;
 133                         int cond;
 134                 } jump_if;
 135                 struct {
 136                         struct code* target;
 137                         int cond;
 138                 } jump_unless;
 139                 struct {
 140                         int l;
 141                         int r;
 142                 } set;
 143                 struct {
 144                         int l;
 145                         int r;
 146                         int res; /* result */
 147                 } tpop;
 148                 struct {
 149                         int par;
 150                         int res; /* result */
 151                 } dpop;
 152                 struct {
 153                         int copy;
 154                         int what;
 155                 } arrow;
 156                 struct {
 157                 } nop;
 158         } u;
 159 };
 160
 161 struct variable {
 162         struct node car;
 163         char* name;
 164         int varcode;
 165         int modified;
 166 };
 167
 168 struct list input_code;
 169 struct list* var_hash;
 170 int current_varcode;
 171 int temp_varcode_start;
 172 char** var_tab;
 173 char** const_tab;
 174 int cur_const_n;
 175 int cur_const_s;
 176
 177 void init(void);
 178 void compile(struct tree* t, struct list* where);
 179 int find_var(char* name, struct list* hash);
 180 int store_const(char* c);
 181 struct list* new_var_hash(void);
 182 int get_bucket_number(char* name);
 183 void print_code(void);
 184
 185 /* int.c */
 186 struct hlist {
 187         struct node car;
 188         char* name;
 189         char* value;
 190         int have_var;
 191 };
 192
 193 struct email {
 194         struct list* headers;
 195         char* body;
 196         int body_len;
 197 };
 198
 199 void save_current_headers(struct list* hash);
 200 void print_vars(struct list* hash);
 201 void interp(struct list* ins, struct list* hash);
 202
 203 /* ham.c */
 204 char* default_mailbox;
 205
 206 struct list* current_headers;
 207 struct email* current_body;
 208 struct list* make_hlist(void);
 209 void print_headers(struct list* l);
 210 struct email* get_body(void);
 211
 212 /* lock.c */
 213 void save_gids(void);
 214 void close_mailbox(int fd, char* path, int is_default_mailbox);
 215 int open_mailbox(char* path, int is_default_mailbox);
 216 char* cat(char* l, char* r);
 217
 218