nsz Git - cparser/blob - wrappergen/write_jna.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #include <errno.h>
  23 #include <string.h>
  24
  25 #include "write_jna.h"
  26 #include "symbol_t.h"
  27 #include "ast_t.h"
  28 #include "type_t.h"
  29 #include "entity_t.h"
  30 #include "type.h"
  31 #include "printer.h"
  32 #include "adt/error.h"
  33 #include <libfirm/adt/pset_new.h>
  34
  35 static const scope_t *global_scope;
  36 static FILE          *out;
  37 static pset_new_t     avoid_symbols;
  38
  39 static void write_type(type_t *type);
  40
  41 static bool is_system_header(const char *fname)
  42 {
  43         return strncmp(fname, "/usr/include", 12) == 0;
  44 }
  45
  46 static const char *fix_builtin_names(const char *name)
  47 {
  48         if (strcmp(name, "class") == 0) {
  49                 return "_class";
  50         } else if(strcmp(name, "this") == 0) {
  51                 return "_this";
  52         } else if(strcmp(name, "public") == 0) {
  53                 return "_public";
  54         } else if(strcmp(name, "protected") == 0) {
  55                 return "_protected";
  56         } else if(strcmp(name, "private") == 0) {
  57                 return "_private";
  58         } else if(strcmp(name, "final") == 0) {
  59                 return "_final";
  60         }
  61         /* TODO put all reserved names here */
  62         return name;
  63 }
  64
  65 static const char *get_atomic_type_string(const atomic_type_kind_t type)
  66 {
  67         switch(type) {
  68         case ATOMIC_TYPE_VOID:        return "void";
  69         case ATOMIC_TYPE_CHAR:        return "byte";
  70         case ATOMIC_TYPE_SCHAR:       return "byte";
  71         case ATOMIC_TYPE_UCHAR:       return "byte";
  72         case ATOMIC_TYPE_SHORT:       return "short";
  73         case ATOMIC_TYPE_USHORT:      return "short";
  74         case ATOMIC_TYPE_INT:         return "int";
  75         case ATOMIC_TYPE_UINT:        return "int";
  76         case ATOMIC_TYPE_LONG:        return "com.sun.jna.NativeLong";
  77         case ATOMIC_TYPE_ULONG:       return "com.sun.jna.NativeLong";
  78         case ATOMIC_TYPE_LONGLONG:    return "long";
  79         case ATOMIC_TYPE_ULONGLONG:   return "long";
  80         case ATOMIC_TYPE_FLOAT:       return "float";
  81         case ATOMIC_TYPE_DOUBLE:      return "double";
  82         case ATOMIC_TYPE_LONG_DOUBLE: return "double";
  83         case ATOMIC_TYPE_BOOL:        return "boolean";
  84         default:                      panic("unsupported atomic type");
  85         }
  86 }
  87
  88 static void write_atomic_type(const atomic_type_t *type)
  89 {
  90         fputs(get_atomic_type_string(type->akind), out);
  91 }
  92
  93 static void write_pointer_type(const pointer_type_t *type)
  94 {
  95         type_t *points_to = skip_typeref(type->points_to);
  96         if (is_type_atomic(points_to, ATOMIC_TYPE_CHAR)) {
  97                 fputs("String", out);
  98                 return;
  99         }
 100         if (is_type_pointer(points_to)) {
 101                 /* hack... */
 102                 fputs("Pointer[]", out);
 103                 return;
 104         }
 105         fputs("Pointer", out);
 106 }
 107
 108 static entity_t *find_typedef(const type_t *type)
 109 {
 110         /* first: search for a matching typedef in the global type... */
 111         entity_t *entity = global_scope->entities;
 112         for ( ; entity != NULL; entity = entity->base.next) {
 113                 if (entity->kind != ENTITY_TYPEDEF)
 114                         continue;
 115                 if (entity->typedefe.type == type)
 116                         break;
 117         }
 118
 119         return entity;
 120 }
 121
 122 static entity_t *find_enum_typedef(const enum_t *enume)
 123 {
 124         /* first: search for a matching typedef in the global type... */
 125         entity_t *entity = global_scope->entities;
 126         for ( ; entity != NULL; entity = entity->base.next) {
 127                 if (entity->kind != ENTITY_TYPEDEF)
 128                         continue;
 129                 type_t *type = entity->typedefe.type;
 130                 if (type->kind != TYPE_ENUM)
 131                         continue;
 132
 133                 enum_t *e_entity = type->enumt.enume;
 134                 if (e_entity == enume)
 135                         break;
 136         }
 137
 138         return entity;
 139 }
 140
 141 static void write_compound_type(const compound_type_t *type)
 142 {
 143         entity_t *entity = find_typedef((const type_t*) type);
 144         if(entity != NULL) {
 145                 fputs(entity->base.symbol->string, out);
 146                 return;
 147         }
 148
 149         /* does the struct have a name? */
 150         symbol_t *symbol = type->compound->base.symbol;
 151         if(symbol != NULL) {
 152                 /* TODO: make sure we create a struct for it... */
 153                 fputs(symbol->string, out);
 154                 return;
 155         }
 156         /* TODO: create a struct and use its name here... */
 157         fputs("/* TODO anonymous struct */byte", out);
 158 }
 159
 160 static void write_enum_name(const enum_type_t *type)
 161 {
 162         entity_t *entity = find_typedef((const type_t*) type);
 163         if (entity != NULL) {
 164                 fputs(entity->base.symbol->string, out);
 165                 return;
 166         }
 167
 168         /* does the enum have a name? */
 169         symbol_t *symbol = type->enume->base.symbol;
 170         if (symbol != NULL) {
 171                 /* TODO: make sure we create an enum for it... */
 172                 fputs(symbol->string, out);
 173                 return;
 174         }
 175
 176         /* now we have a problem as we don't know how we'll call the anonymous
 177          * enum */
 178         panic("can't reference entries from anonymous enums yet");
 179 }
 180
 181 static void write_enum_type(const enum_type_t *type)
 182 {
 183         entity_t *entity = find_typedef((const type_t*) type);
 184         if (entity != NULL) {
 185                 fprintf(out, "/* %s */int", entity->base.symbol->string);
 186                 return;
 187         }
 188
 189         /* does the enum have a name? */
 190         symbol_t *symbol = type->enume->base.symbol;
 191         if (symbol != NULL) {
 192                 /* TODO: make sure we create an enum for it... */
 193                 fprintf(out, "/* %s */int", symbol->string);
 194                 return;
 195         }
 196         fprintf(out, "/* anonymous enum */int");
 197 }
 198
 199 static void write_type(type_t *type)
 200 {
 201         type = skip_typeref(type);
 202         switch(type->kind) {
 203         case TYPE_ATOMIC:
 204                 write_atomic_type(&type->atomic);
 205                 return;
 206         case TYPE_POINTER:
 207                 write_pointer_type(&type->pointer);
 208                 return;
 209         case TYPE_COMPOUND_UNION:
 210         case TYPE_COMPOUND_STRUCT:
 211                 write_compound_type(&type->compound);
 212                 return;
 213         case TYPE_ENUM:
 214                 write_enum_type(&type->enumt);
 215                 return;
 216         case TYPE_BUILTIN:
 217                 write_type(type->builtin.real_type);
 218                 return;
 219         case TYPE_ERROR:
 220         case TYPE_INVALID:
 221         case TYPE_TYPEOF:
 222         case TYPE_TYPEDEF:
 223                 panic("invalid type found");
 224         case TYPE_ARRAY:
 225         case TYPE_BITFIELD:
 226         case TYPE_REFERENCE:
 227         case TYPE_FUNCTION:
 228         case TYPE_COMPLEX:
 229         case TYPE_IMAGINARY:
 230                 fprintf(out, "/* TODO type */Pointer");
 231                 break;
 232         }
 233 }
 234
 235 #if 0
 236 static void write_compound_entry(const entity_t *entity)
 237 {
 238         fprintf(out, "\t%s : ", entity->base.symbol->string);
 239         write_type(entity->declaration.type);
 240         fprintf(out, "\n");
 241 }
 242
 243 static void write_compound(const symbol_t *symbol, const compound_type_t *type)
 244 {
 245         fprintf(out, "%s %s:\n",
 246                 type->base.kind == TYPE_COMPOUND_STRUCT ? "struct" : "union",
 247                         symbol->string);
 248
 249         const entity_t *entity = type->compound->members.entities;
 250         for ( ; entity != NULL; entity = entity->base.next) {
 251                 write_compound_entry(entity);
 252         }
 253
 254         fprintf(out, "\n");
 255 }
 256 #endif
 257
 258 static void write_expression(const expression_t *expression);
 259
 260 static void write_unary_expression(const unary_expression_t *expression)
 261 {
 262         switch(expression->base.kind) {
 263         case EXPR_UNARY_NEGATE:
 264                 fputc('-', out);
 265                 break;
 266         case EXPR_UNARY_NOT:
 267                 fputc('!', out);
 268                 break;
 269         case EXPR_UNARY_CAST_IMPLICIT:
 270                 write_expression(expression->value);
 271                 return;
 272         default:
 273                 panic("unimeplemented unary expression found");
 274         }
 275         write_expression(expression->value);
 276 }
 277
 278 static void write_binary_expression(const binary_expression_t *expression)
 279 {
 280         fputs("(", out);
 281         write_expression(expression->left);
 282         switch(expression->base.kind) {
 283         case EXPR_BINARY_BITWISE_OR:  fputs("|", out); break;
 284         case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
 285         case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
 286         case EXPR_BINARY_SHIFTLEFT:   fputs("<<", out); break;
 287         case EXPR_BINARY_SHIFTRIGHT:  fputs(">>", out); break;
 288         case EXPR_BINARY_ADD:         fputs("+", out); break;
 289         case EXPR_BINARY_SUB:         fputs("-", out); break;
 290         case EXPR_BINARY_MUL:         fputs("*", out); break;
 291         case EXPR_BINARY_DIV:         fputs("/", out); break;
 292         default:
 293                 panic("unimplemented binexpr");
 294         }
 295         write_expression(expression->right);
 296         fputs(")", out);
 297 }
 298
 299 static void write_expression(const expression_t *expression)
 300 {
 301         const const_expression_t *constant;
 302         /* TODO */
 303         switch(expression->kind) {
 304         case EXPR_CONST:
 305                 constant = &expression->conste;
 306                 if(is_type_integer(expression->base.type)) {
 307                         fprintf(out, "%lld", constant->v.int_value);
 308                 } else {
 309                         fprintf(out, "%Lf", constant->v.float_value);
 310                 }
 311                 break;
 312         case EXPR_REFERENCE_ENUM_VALUE: {
 313                 /* UHOH... hacking */
 314                 entity_t *entity = expression->reference.entity;
 315                 write_enum_name(& entity->enum_value.enum_type->enumt);
 316                 fprintf(out, ".%s.val", entity->base.symbol->string);
 317                 break;
 318         }
 319         EXPR_UNARY_CASES
 320                 write_unary_expression(&expression->unary);
 321                 break;
 322         EXPR_BINARY_CASES
 323                 write_binary_expression(&expression->binary);
 324                 break;
 325         default:
 326                 panic("not implemented expression");
 327         }
 328 }
 329
 330 static void write_enum(const symbol_t *symbol, const enum_t *entity)
 331 {
 332         char buf[128];
 333         const char *name;
 334
 335         if (symbol == NULL) {
 336                 static int lastenum = 0;
 337                 snprintf(buf, sizeof(buf), "AnonEnum%d", lastenum++);
 338                 name = buf;
 339         } else {
 340                 name = symbol->string;
 341         }
 342
 343         fprintf(out, "\tpublic static enum %s {\n", name);
 344
 345         entity_t *entry = entity->base.next;
 346         for ( ; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
 347                         entry = entry->base.next) {
 348                 fprintf(out, "\t\t%s", entry->base.symbol->string);
 349                 fprintf(out, "(");
 350                 if(entry->enum_value.value != NULL) {
 351                         write_expression(entry->enum_value.value);
 352                 }
 353                 fprintf(out, ")");
 354                 if (entry->base.next != NULL
 355                                 && entry->base.next->kind == ENTITY_ENUM_VALUE) {
 356                         fputs(",\n", out);
 357                 } else {
 358                         fputs(";\n", out);
 359                 }
 360         }
 361         fprintf(out, "\t\tpublic final int val;\n");
 362         fprintf(out, "\t\tprivate static class C { static int next_val; }\n\n");
 363         fprintf(out, "\t\t%s(int val) {\n", name);
 364         fprintf(out, "\t\t\tthis.val = val;\n");
 365         fprintf(out, "\t\t\tC.next_val = val + 1;\n");
 366         fprintf(out, "\t\t}\n");
 367         fprintf(out, "\t\t%s() {\n", name);
 368         fprintf(out, "\t\t\tthis.val = C.next_val++;\n");
 369         fprintf(out, "\t\t}\n");
 370         fprintf(out, "\t\t\n");
 371         fprintf(out, "\t\tpublic static %s getEnum(int val) {\n", name);
 372         fprintf(out, "\t\t\tfor(%s entry : values()) {\n", name);
 373         fprintf(out, "\t\t\t\tif (val == entry.val)\n");
 374         fprintf(out, "\t\t\t\t\treturn entry;\n");
 375         fprintf(out, "\t\t\t}\n");
 376         fprintf(out, "\t\t\treturn null;\n");
 377         fprintf(out, "\t\t}\n");
 378         fprintf(out, "\t}\n");
 379 }
 380
 381 #if 0
 382 static void write_variable(const entity_t *entity)
 383 {
 384         fprintf(out, "var %s : ", entity->base.symbol->string);
 385         write_type(entity->declaration.type);
 386         fprintf(out, "\n");
 387 }
 388 #endif
 389
 390 static void write_function(const entity_t *entity)
 391 {
 392         if (entity->function.statement != NULL) {
 393                 fprintf(stderr, "Warning: can't convert function bodies (at %s)\n",
 394                         entity->base.symbol->string);
 395                 return;
 396         }
 397
 398
 399         const function_type_t *function_type
 400                 = (const function_type_t*) entity->declaration.type;
 401
 402         fputc('\t', out);
 403         type_t *return_type = skip_typeref(function_type->return_type);
 404         write_type(return_type);
 405         fprintf(out, " %s(", entity->base.symbol->string);
 406
 407         entity_t *parameter = entity->function.parameters.entities;
 408         int       first     = 1;
 409         int       n         = 0;
 410         for( ; parameter != NULL; parameter = parameter->base.next) {
 411                 assert(parameter->kind == ENTITY_PARAMETER);
 412                 if(!first) {
 413                         fprintf(out, ", ");
 414                 } else {
 415                         first = 0;
 416                 }
 417                 write_type(parameter->declaration.type);
 418                 if(parameter->base.symbol != NULL) {
 419                         fprintf(out, " %s", fix_builtin_names(parameter->base.symbol->string));
 420                 } else {
 421                         fprintf(out, " _%d", n++);
 422                 }
 423         }
 424         if(function_type->variadic) {
 425                 if(!first) {
 426                         fprintf(out, ", ");
 427                 } else {
 428                         first = 0;
 429                 }
 430                 fputs("Object ... args", out);
 431         }
 432         fprintf(out, ");\n");
 433 }
 434
 435
 436 void write_jna_decls(FILE *output, const translation_unit_t *unit)
 437 {
 438         out          = output;
 439         global_scope = &unit->scope;
 440
 441         pset_new_init(&avoid_symbols);
 442
 443         print_to_file(out);
 444         fprintf(out, "/* WARNING: Automatically generated file */\n");
 445         fputs("import com.sun.jna.Library;\n", out);
 446         fputs("import com.sun.jna.Pointer;\n", out);
 447         fputs("\n\n", out);
 448
 449         /* TODO: where to get the name from? */
 450         fputs("public interface binding extends Library {\n", out);
 451
 452         /* read the avoid list */
 453         FILE *avoid = fopen("avoid.config", "r");
 454         if (avoid != NULL) {
 455                 while (!feof(avoid)) {
 456                         char buf[1024];
 457                         fgets(buf, sizeof(buf), avoid);
 458                         size_t len = strlen(buf);
 459                         if (buf[len-1] == '\n')
 460                                 buf[len-1] = 0;
 461                         if (buf[0] == 0)
 462                                 continue;
 463
 464                         char *str = malloc(len+1);
 465                         memcpy(str, buf, len+1);
 466                         symbol_t *symbol = symbol_table_insert(str);
 467                         pset_new_insert(&avoid_symbols, symbol);
 468                 }
 469                 fclose(avoid);
 470         }
 471
 472         /* write structs,unions + enums */
 473         entity_t *entity = unit->scope.entities;
 474         for( ; entity != NULL; entity = entity->base.next) {
 475                 if (entity->kind == ENTITY_ENUM) {
 476                         if (find_enum_typedef(&entity->enume) != NULL)
 477                                 continue;
 478                         write_enum(entity->base.symbol, &entity->enume);
 479                 } else if (entity->kind == ENTITY_TYPEDEF) {
 480                         type_t *type = entity->typedefe.type;
 481                         if (type->kind == TYPE_ENUM) {
 482                                 write_enum(entity->base.symbol, type->enumt.enume);
 483                         }
 484                 }
 485
 486 #if 0
 487                 if(type->kind == TYPE_COMPOUND_STRUCT
 488                                 || type->kind == TYPE_COMPOUND_UNION) {
 489                         write_compound(entity->base.symbol, &type->compound);
 490                 }
 491 #endif
 492         }
 493
 494         /* write functions */
 495         entity = unit->scope.entities;
 496         for( ; entity != NULL; entity = entity->base.next) {
 497                 if (entity->kind != ENTITY_FUNCTION)
 498                         continue;
 499                 if (is_system_header(entity->base.source_position.input_name))
 500                         continue;
 501
 502                 if (pset_new_contains(&avoid_symbols, entity->base.symbol))
 503                         continue;
 504                 write_function(entity);
 505         }
 506
 507         fputs("}\n", out);
 508
 509         pset_new_destroy(&avoid_symbols);
 510 }