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         if (strncmp(fname, "/usr/include", 12) == 0)
  44                 return true;
  45         if (fname == builtin_source_position.input_name)
  46                 return true;
  47         return false;
  48 }
  49
  50 static const char *fix_builtin_names(const char *name)
  51 {
  52         if (strcmp(name, "class") == 0) {
  53                 return "_class";
  54         } else if(strcmp(name, "this") == 0) {
  55                 return "_this";
  56         } else if(strcmp(name, "public") == 0) {
  57                 return "_public";
  58         } else if(strcmp(name, "protected") == 0) {
  59                 return "_protected";
  60         } else if(strcmp(name, "private") == 0) {
  61                 return "_private";
  62         } else if(strcmp(name, "final") == 0) {
  63                 return "_final";
  64         }
  65         /* TODO put all reserved names here */
  66         return name;
  67 }
  68
  69 static const char *get_atomic_type_string(const atomic_type_kind_t type)
  70 {
  71         switch(type) {
  72         case ATOMIC_TYPE_VOID:        return "void";
  73         case ATOMIC_TYPE_CHAR:        return "byte";
  74         case ATOMIC_TYPE_SCHAR:       return "byte";
  75         case ATOMIC_TYPE_UCHAR:       return "byte";
  76         case ATOMIC_TYPE_SHORT:       return "short";
  77         case ATOMIC_TYPE_USHORT:      return "short";
  78         case ATOMIC_TYPE_INT:         return "int";
  79         case ATOMIC_TYPE_UINT:        return "int";
  80         case ATOMIC_TYPE_LONG:        return "com.sun.jna.NativeLong";
  81         case ATOMIC_TYPE_ULONG:       return "com.sun.jna.NativeLong";
  82         case ATOMIC_TYPE_LONGLONG:    return "long";
  83         case ATOMIC_TYPE_ULONGLONG:   return "long";
  84         case ATOMIC_TYPE_FLOAT:       return "float";
  85         case ATOMIC_TYPE_DOUBLE:      return "double";
  86         case ATOMIC_TYPE_BOOL:        return "boolean";
  87         default:                      panic("unsupported atomic type");
  88         }
  89 }
  90
  91 static void write_atomic_type(const atomic_type_t *type)
  92 {
  93         fputs(get_atomic_type_string(type->akind), out);
  94 }
  95
  96 static void write_pointer_type(const pointer_type_t *type)
  97 {
  98         type_t *points_to = skip_typeref(type->points_to);
  99         if (is_type_atomic(points_to, ATOMIC_TYPE_CHAR)) {
 100                 fputs("String", out);
 101                 return;
 102         }
 103         if (is_type_pointer(points_to)) {
 104                 /* hack... */
 105                 fputs("java.nio.Buffer", out);
 106                 return;
 107         }
 108         fputs("Pointer", out);
 109 }
 110
 111 static entity_t *find_typedef(const type_t *type)
 112 {
 113         /* first: search for a matching typedef in the global type... */
 114         entity_t *entity = global_scope->entities;
 115         for ( ; entity != NULL; entity = entity->base.next) {
 116                 if (entity->kind != ENTITY_TYPEDEF)
 117                         continue;
 118                 if (entity->typedefe.type == type)
 119                         break;
 120         }
 121
 122         return entity;
 123 }
 124
 125 static entity_t *find_enum_typedef(const enum_t *enume)
 126 {
 127         /* first: search for a matching typedef in the global type... */
 128         entity_t *entity = global_scope->entities;
 129         for ( ; entity != NULL; entity = entity->base.next) {
 130                 if (entity->kind != ENTITY_TYPEDEF)
 131                         continue;
 132                 type_t *type = entity->typedefe.type;
 133                 if (type->kind != TYPE_ENUM)
 134                         continue;
 135
 136                 enum_t *e_entity = type->enumt.enume;
 137                 if (e_entity == enume)
 138                         break;
 139         }
 140
 141         return entity;
 142 }
 143
 144 static void write_compound_type(const compound_type_t *type)
 145 {
 146         entity_t *entity = find_typedef((const type_t*) type);
 147         if(entity != NULL) {
 148                 fputs(entity->base.symbol->string, out);
 149                 return;
 150         }
 151
 152         /* does the struct have a name? */
 153         symbol_t *symbol = type->compound->base.symbol;
 154         if(symbol != NULL) {
 155                 /* TODO: make sure we create a struct for it... */
 156                 fputs(symbol->string, out);
 157                 return;
 158         }
 159         /* TODO: create a struct and use its name here... */
 160         fputs("/* TODO anonymous struct */byte", out);
 161 }
 162
 163 static void write_enum_name(const enum_type_t *type)
 164 {
 165         entity_t *entity = find_typedef((const type_t*) type);
 166         if (entity != NULL) {
 167                 fputs(entity->base.symbol->string, out);
 168                 return;
 169         }
 170
 171         /* does the enum have a name? */
 172         symbol_t *symbol = type->enume->base.symbol;
 173         if (symbol != NULL) {
 174                 /* TODO: make sure we create an enum for it... */
 175                 fputs(symbol->string, out);
 176                 return;
 177         }
 178
 179         /* now we have a problem as we don't know how we'll call the anonymous
 180          * enum */
 181         panic("can't reference entries from anonymous enums yet");
 182 }
 183
 184 static void write_enum_type(const enum_type_t *type)
 185 {
 186         entity_t *entity = find_typedef((const type_t*) type);
 187         if (entity != NULL) {
 188                 fprintf(out, "/* %s */int", entity->base.symbol->string);
 189                 return;
 190         }
 191
 192         /* does the enum have a name? */
 193         symbol_t *symbol = type->enume->base.symbol;
 194         if (symbol != NULL) {
 195                 /* TODO: make sure we create an enum for it... */
 196                 fprintf(out, "/* %s */int", symbol->string);
 197                 return;
 198         }
 199         fprintf(out, "/* anonymous enum */int");
 200 }
 201
 202 static void write_type(type_t *type)
 203 {
 204         type = skip_typeref(type);
 205         switch(type->kind) {
 206         case TYPE_ATOMIC:
 207                 write_atomic_type(&type->atomic);
 208                 return;
 209         case TYPE_POINTER:
 210                 write_pointer_type(&type->pointer);
 211                 return;
 212         case TYPE_COMPOUND_UNION:
 213         case TYPE_COMPOUND_STRUCT:
 214                 write_compound_type(&type->compound);
 215                 return;
 216         case TYPE_ENUM:
 217                 write_enum_type(&type->enumt);
 218                 return;
 219         case TYPE_BUILTIN:
 220                 write_type(type->builtin.real_type);
 221                 return;
 222         case TYPE_ERROR:
 223         case TYPE_INVALID:
 224         case TYPE_TYPEOF:
 225         case TYPE_TYPEDEF:
 226                 panic("invalid type found");
 227         case TYPE_ARRAY:
 228         case TYPE_BITFIELD:
 229         case TYPE_REFERENCE:
 230         case TYPE_FUNCTION:
 231         case TYPE_COMPLEX:
 232         case TYPE_IMAGINARY:
 233                 fprintf(out, "/* TODO type */Pointer");
 234                 break;
 235         }
 236 }
 237
 238 #if 0
 239 static void write_compound_entry(const entity_t *entity)
 240 {
 241         fprintf(out, "\t%s : ", entity->base.symbol->string);
 242         write_type(entity->declaration.type);
 243         fprintf(out, "\n");
 244 }
 245
 246 static void write_compound(const symbol_t *symbol, const compound_type_t *type)
 247 {
 248         fprintf(out, "%s %s:\n",
 249                 type->base.kind == TYPE_COMPOUND_STRUCT ? "struct" : "union",
 250                         symbol->string);
 251
 252         const entity_t *entity = type->compound->members.entities;
 253         for ( ; entity != NULL; entity = entity->base.next) {
 254                 write_compound_entry(entity);
 255         }
 256
 257         fprintf(out, "\n");
 258 }
 259 #endif
 260
 261 static void write_expression(const expression_t *expression);
 262
 263 static void write_unary_expression(const unary_expression_t *expression)
 264 {
 265         switch(expression->base.kind) {
 266         case EXPR_UNARY_NEGATE:
 267                 fputc('-', out);
 268                 break;
 269         case EXPR_UNARY_NOT:
 270                 fputc('!', out);
 271                 break;
 272         case EXPR_UNARY_CAST_IMPLICIT:
 273                 write_expression(expression->value);
 274                 return;
 275         default:
 276                 panic("unimeplemented unary expression found");
 277         }
 278         write_expression(expression->value);
 279 }
 280
 281 static void write_binary_expression(const binary_expression_t *expression)
 282 {
 283         fputs("(", out);
 284         write_expression(expression->left);
 285         fputc(' ', out);
 286         switch(expression->base.kind) {
 287         case EXPR_BINARY_BITWISE_OR:  fputs("|", out); break;
 288         case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
 289         case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
 290         case EXPR_BINARY_SHIFTLEFT:   fputs("<<", out); break;
 291         case EXPR_BINARY_SHIFTRIGHT:  fputs(">>", out); break;
 292         case EXPR_BINARY_ADD:         fputs("+", out); break;
 293         case EXPR_BINARY_SUB:         fputs("-", out); break;
 294         case EXPR_BINARY_MUL:         fputs("*", out); break;
 295         case EXPR_BINARY_DIV:         fputs("/", out); break;
 296         default:
 297                 panic("unimplemented binexpr");
 298         }
 299         fputc(' ', out);
 300         write_expression(expression->right);
 301         fputs(")", out);
 302 }
 303
 304 static void write_expression(const expression_t *expression)
 305 {
 306         /* TODO */
 307         switch(expression->kind) {
 308         case EXPR_LITERAL_INTEGER:
 309         case EXPR_LITERAL_INTEGER_OCTAL:
 310                 fprintf(out, "%s", expression->literal.value.begin);
 311                 break;
 312         case EXPR_LITERAL_INTEGER_HEXADECIMAL:
 313                 fprintf(out, "0x%s", expression->literal.value.begin);
 314                 break;
 315         case EXPR_REFERENCE_ENUM_VALUE: {
 316                 /* UHOH... hacking */
 317                 entity_t *entity = expression->reference.entity;
 318                 write_enum_name(& entity->enum_value.enum_type->enumt);
 319                 fprintf(out, ".%s.val", entity->base.symbol->string);
 320                 break;
 321         }
 322         EXPR_UNARY_CASES
 323                 write_unary_expression(&expression->unary);
 324                 break;
 325         EXPR_BINARY_CASES
 326                 write_binary_expression(&expression->binary);
 327                 break;
 328         default:
 329                 panic("not implemented expression");
 330         }
 331 }
 332
 333 static void write_enum(const symbol_t *symbol, const enum_t *entity)
 334 {
 335         char buf[128];
 336         const char *name;
 337
 338         if (symbol == NULL) {
 339                 static int lastenum = 0;
 340                 snprintf(buf, sizeof(buf), "AnonEnum%d", lastenum++);
 341                 name = buf;
 342         } else {
 343                 name = symbol->string;
 344         }
 345
 346         fprintf(out, "\tpublic static enum %s {\n", name);
 347
 348         entity_t *entry = entity->base.next;
 349         for ( ; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
 350                         entry = entry->base.next) {
 351                 fprintf(out, "\t\t%s", entry->base.symbol->string);
 352                 fprintf(out, "(");
 353                 if(entry->enum_value.value != NULL) {
 354                         write_expression(entry->enum_value.value);
 355                 }
 356                 fprintf(out, ")");
 357                 if (entry->base.next != NULL
 358                                 && entry->base.next->kind == ENTITY_ENUM_VALUE) {
 359                         fputs(",\n", out);
 360                 } else {
 361                         fputs(";\n", out);
 362                 }
 363         }
 364         fprintf(out, "\t\tpublic final int val;\n");
 365         fprintf(out, "\n");
 366         fprintf(out, "\t\tprivate static class C {\n");
 367         fprintf(out, "\t\t\tstatic int next_val;\n");
 368         fprintf(out, "\t\t}\n");
 369         fprintf(out, "\n");
 370         fprintf(out, "\t\t%s(int val) {\n", name);
 371         fprintf(out, "\t\t\tthis.val = val;\n");
 372         fprintf(out, "\t\t\tC.next_val = val + 1;\n");
 373         fprintf(out, "\t\t}\n");
 374         fprintf(out, "\n");
 375         fprintf(out, "\t\t%s() {\n", name);
 376         fprintf(out, "\t\t\tthis.val = C.next_val++;\n");
 377         fprintf(out, "\t\t}\n");
 378         fprintf(out, "\n");
 379         fprintf(out, "\t\tpublic static %s getEnum(int val) {\n", name);
 380         fprintf(out, "\t\t\tfor (%s entry : values()) {\n", name);
 381         fprintf(out, "\t\t\t\tif (val == entry.val)\n");
 382         fprintf(out, "\t\t\t\t\treturn entry;\n");
 383         fprintf(out, "\t\t\t}\n");
 384         fprintf(out, "\t\t\treturn null;\n");
 385         fprintf(out, "\t\t}\n");
 386         fprintf(out, "\t}\n");
 387         fprintf(out, "\n");
 388 }
 389
 390 #if 0
 391 static void write_variable(const entity_t *entity)
 392 {
 393         fprintf(out, "var %s : ", entity->base.symbol->string);
 394         write_type(entity->declaration.type);
 395         fprintf(out, "\n");
 396 }
 397 #endif
 398
 399 static void write_function(const entity_t *entity)
 400 {
 401         if (entity->function.statement != NULL) {
 402                 fprintf(stderr, "Warning: can't convert function bodies (at %s)\n",
 403                         entity->base.symbol->string);
 404                 return;
 405         }
 406
 407
 408         const function_type_t *function_type
 409                 = (const function_type_t*) entity->declaration.type;
 410
 411         fputc('\n', out);
 412         fprintf(out, "\tpublic static native ");
 413         type_t *return_type = skip_typeref(function_type->return_type);
 414         write_type(return_type);
 415         fprintf(out, " %s(", entity->base.symbol->string);
 416
 417         entity_t *parameter = entity->function.parameters.entities;
 418         int       first     = 1;
 419         int       n         = 0;
 420         for ( ; parameter != NULL; parameter = parameter->base.next) {
 421                 assert(parameter->kind == ENTITY_PARAMETER);
 422                 if(!first) {
 423                         fprintf(out, ", ");
 424                 } else {
 425                         first = 0;
 426                 }
 427                 write_type(parameter->declaration.type);
 428                 if(parameter->base.symbol != NULL) {
 429                         fprintf(out, " %s", fix_builtin_names(parameter->base.symbol->string));
 430                 } else {
 431                         fprintf(out, " _%d", n++);
 432                 }
 433         }
 434         if(function_type->variadic) {
 435                 if(!first) {
 436                         fprintf(out, ", ");
 437                 } else {
 438                         first = 0;
 439                 }
 440                 fputs("Object ... args", out);
 441         }
 442         fprintf(out, ");\n");
 443 }
 444
 445
 446 void write_jna_decls(FILE *output, const translation_unit_t *unit)
 447 {
 448         out          = output;
 449         global_scope = &unit->scope;
 450
 451         pset_new_init(&avoid_symbols);
 452
 453         print_to_file(out);
 454         fprintf(out, "/* WARNING: Automatically generated file */\n");
 455         fputs("import com.sun.jna.Native;\n", out);
 456         fputs("import com.sun.jna.Pointer;\n", out);
 457         fputs("\n", out);
 458
 459         /* TODO: where to get the name from? */
 460         fputs("public class binding {\n", out);
 461         fputs("\tstatic {\n", out);
 462         fputs("\t\tNative.register(\"firm\");\n", out);
 463         fputs("\t}\n", out);
 464         fputs("\n", out);
 465
 466         /* read the avoid list */
 467         FILE *avoid = fopen("avoid.config", "r");
 468         if (avoid != NULL) {
 469                 while (!feof(avoid)) {
 470                         char buf[1024];
 471                         char *res = fgets(buf, sizeof(buf), avoid);
 472                         if (res == NULL)
 473                                 break;
 474                         if (buf[0] == 0)
 475                                 continue;
 476
 477                         size_t len = strlen(buf);
 478                         if (buf[len-1] == '\n')
 479                                 buf[len-1] = 0;
 480
 481                         char *str = malloc(len+1);
 482                         memcpy(str, buf, len+1);
 483                         symbol_t *symbol = symbol_table_insert(str);
 484                         pset_new_insert(&avoid_symbols, symbol);
 485                 }
 486                 fclose(avoid);
 487         }
 488
 489         /* write structs,unions + enums */
 490         entity_t *entity = unit->scope.entities;
 491         for ( ; entity != NULL; entity = entity->base.next) {
 492                 if (entity->kind == ENTITY_ENUM) {
 493                         if (find_enum_typedef(&entity->enume) != NULL)
 494                                 continue;
 495                         write_enum(entity->base.symbol, &entity->enume);
 496                 } else if (entity->kind == ENTITY_TYPEDEF) {
 497                         type_t *type = entity->typedefe.type;
 498                         if (type->kind == TYPE_ENUM) {
 499                                 write_enum(entity->base.symbol, type->enumt.enume);
 500                         }
 501                 }
 502
 503 #if 0
 504                 if(type->kind == TYPE_COMPOUND_STRUCT
 505                                 || type->kind == TYPE_COMPOUND_UNION) {
 506                         write_compound(entity->base.symbol, &type->compound);
 507                 }
 508 #endif
 509         }
 510
 511         /* write functions */
 512         entity = unit->scope.entities;
 513         for ( ; entity != NULL; entity = entity->base.next) {
 514                 if (entity->kind != ENTITY_FUNCTION)
 515                         continue;
 516                 if (is_system_header(entity->base.source_position.input_name))
 517                         continue;
 518
 519                 if (pset_new_contains(&avoid_symbols, entity->base.symbol))
 520                         continue;
 521                 write_function(entity);
 522         }
 523
 524         fputs("}\n", out);
 525
 526         pset_new_destroy(&avoid_symbols);
 527 }