nsz Git - cparser/blob - wrappergen/write_fluffy.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_fluffy.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 "adt/error.h"
  32 #include "printer.h"
  33
  34 static const scope_t *global_scope;
  35 static FILE          *out;
  36
  37 static void write_type(const type_t *type);
  38
  39 static const char *get_atomic_type_string(const atomic_type_kind_t type)
  40 {
  41         switch(type) {
  42         case ATOMIC_TYPE_VOID:        return "void";
  43         case ATOMIC_TYPE_CHAR:        return "byte";
  44         case ATOMIC_TYPE_SCHAR:       return "byte";
  45         case ATOMIC_TYPE_UCHAR:       return "unsigned byte";
  46         case ATOMIC_TYPE_SHORT:       return "short";
  47         case ATOMIC_TYPE_USHORT:      return "unsigned short";
  48         case ATOMIC_TYPE_INT:         return "int";
  49         case ATOMIC_TYPE_UINT:        return "unsigned int";
  50         case ATOMIC_TYPE_LONG:        return "int";
  51         case ATOMIC_TYPE_ULONG:       return "unsigned int";
  52         case ATOMIC_TYPE_LONGLONG:    return "long";
  53         case ATOMIC_TYPE_ULONGLONG:   return "unsigned long";
  54         case ATOMIC_TYPE_FLOAT:       return "float";
  55         case ATOMIC_TYPE_DOUBLE:      return "double";
  56         case ATOMIC_TYPE_LONG_DOUBLE: return "double";
  57         case ATOMIC_TYPE_BOOL:        return "bool";
  58         default:                      panic("unsupported atomic type");
  59         }
  60 }
  61
  62 static void write_atomic_type(const atomic_type_t *type)
  63 {
  64         fprintf(out, "%s", get_atomic_type_string(type->akind));
  65 }
  66
  67 static void write_pointer_type(const pointer_type_t *type)
  68 {
  69         write_type(type->points_to);
  70         fputc('*', out);
  71 }
  72
  73 static entity_t *find_typedef(const type_t *type)
  74 {
  75         /* first: search for a matching typedef in the global type... */
  76         entity_t *entity = global_scope->entities;
  77         for ( ; entity != NULL; entity = entity->base.next) {
  78                 if (entity->kind != ENTITY_TYPEDEF)
  79                         continue;
  80                 if (entity->typedefe.type == type)
  81                         break;
  82         }
  83
  84         return entity;
  85 }
  86
  87 static void write_compound_type(const compound_type_t *type)
  88 {
  89         entity_t *entity = find_typedef((const type_t*) type);
  90         if(entity != NULL) {
  91                 fprintf(out, "%s", entity->base.symbol->string);
  92                 return;
  93         }
  94
  95         /* does the struct have a name? */
  96         symbol_t *symbol = type->compound->base.symbol;
  97         if(symbol != NULL) {
  98                 /* TODO: make sure we create a struct for it... */
  99                 fprintf(out, "%s", symbol->string);
 100                 return;
 101         }
 102         /* TODO: create a struct and use its name here... */
 103         fprintf(out, "/* TODO anonymous struct */byte");
 104 }
 105
 106 static void write_enum_type(const enum_type_t *type)
 107 {
 108         entity_t *entity = find_typedef((const type_t*) type);
 109         if (entity != NULL) {
 110                 fprintf(out, "%s", entity->base.symbol->string);
 111                 return;
 112         }
 113
 114         /* does the enum have a name? */
 115         symbol_t *symbol = type->enume->base.symbol;
 116         if (symbol != NULL) {
 117                 /* TODO: make sure we create an enum for it... */
 118                 fprintf(out, "%s", symbol->string);
 119                 return;
 120         }
 121         /* TODO: create a struct and use its name here... */
 122         fprintf(out, "/* TODO anonymous enum */byte");
 123 }
 124
 125 static void write_function_type(const function_type_t *type)
 126 {
 127         fprintf(out, "(func(");
 128
 129         function_parameter_t *parameter = type->parameters;
 130         int                   first     = 1;
 131         while(parameter != NULL) {
 132                 if(!first) {
 133                         fprintf(out, ", ");
 134                 } else {
 135                         first = 0;
 136                 }
 137
 138 #if 0
 139                 if(parameter->symbol != NULL) {
 140                         fprintf(out, "%s : ", parameter->symbol->string);
 141                 } else {
 142                         /* TODO make up some unused names (or allow _ in fluffy?) */
 143                         fprintf(out, "_ : ");
 144                 }
 145 #endif
 146                 fputs("_ : ", out);
 147                 write_type(parameter->type);
 148
 149                 parameter = parameter->next;
 150         }
 151
 152         fprintf(out, ") : ");
 153         write_type(type->return_type);
 154         fprintf(out, ")");
 155 }
 156
 157 static void write_type(const type_t *type)
 158 {
 159         switch(type->kind) {
 160         case TYPE_ATOMIC:
 161                 write_atomic_type(&type->atomic);
 162                 return;
 163         case TYPE_POINTER:
 164                 write_pointer_type(&type->pointer);
 165                 return;
 166         case TYPE_COMPOUND_UNION:
 167         case TYPE_COMPOUND_STRUCT:
 168                 write_compound_type(&type->compound);
 169                 return;
 170         case TYPE_ENUM:
 171                 write_enum_type(&type->enumt);
 172                 return;
 173         case TYPE_FUNCTION:
 174                 write_function_type(&type->function);
 175                 return;
 176         case TYPE_COMPLEX:
 177         case TYPE_IMAGINARY:
 178         default:
 179                 fprintf(out, "/* TODO type */");
 180                 break;
 181         }
 182 }
 183
 184 static void write_compound_entry(const entity_t *entity)
 185 {
 186         fprintf(out, "\t%s : ", entity->base.symbol->string);
 187         write_type(entity->declaration.type);
 188         fprintf(out, "\n");
 189 }
 190
 191 static void write_compound(const symbol_t *symbol, const compound_type_t *type)
 192 {
 193         fprintf(out, "%s %s:\n",
 194                 type->base.kind == TYPE_COMPOUND_STRUCT ? "struct" : "union",
 195                         symbol->string);
 196
 197         const entity_t *entity = type->compound->members.entities;
 198         for ( ; entity != NULL; entity = entity->base.next) {
 199                 write_compound_entry(entity);
 200         }
 201
 202         fprintf(out, "\n");
 203 }
 204
 205 static void write_expression(const expression_t *expression);
 206
 207 static void write_unary_expression(const unary_expression_t *expression)
 208 {
 209         switch(expression->base.kind) {
 210         case EXPR_UNARY_NEGATE:
 211                 fputc('-', out);
 212                 break;
 213         case EXPR_UNARY_NOT:
 214                 fputc('!', out);
 215                 break;
 216         default:
 217                 panic("unimeplemented unary expression found");
 218         }
 219         write_expression(expression->value);
 220 }
 221
 222 static void write_expression(const expression_t *expression)
 223 {
 224         switch(expression->kind) {
 225         case EXPR_LITERAL_INTEGER:
 226                 fprintf(out, "%s", expression->literal.value.begin);
 227                 break;
 228         case EXPR_UNARY_CASES:
 229                 write_unary_expression((const unary_expression_t*) expression);
 230                 break;
 231         default:
 232                 panic("not implemented expression");
 233         }
 234 }
 235
 236 static void write_enum(const symbol_t *symbol, const enum_type_t *type)
 237 {
 238         fprintf(out, "enum %s:\n", symbol->string);
 239
 240         entity_t *entry = type->enume->base.next;
 241         for ( ; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
 242                         entry = entry->base.next) {
 243                 fprintf(out, "\t%s", entry->base.symbol->string);
 244                 if(entry->enum_value.value != NULL) {
 245                         fprintf(out, " <- ");
 246                         write_expression(entry->enum_value.value);
 247                 }
 248                 fputc('\n', out);
 249         }
 250         fprintf(out, "typealias %s <- int\n", symbol->string);
 251         fprintf(out, "\n");
 252 }
 253
 254 static void write_variable(const entity_t *entity)
 255 {
 256         fprintf(out, "var %s : ", entity->base.symbol->string);
 257         write_type(entity->declaration.type);
 258         fprintf(out, "\n");
 259 }
 260
 261 static void write_function(const entity_t *entity)
 262 {
 263         if (entity->function.body != NULL) {
 264                 fprintf(stderr, "Warning: can't convert function bodies (at %s)\n",
 265                         entity->base.symbol->string);
 266         }
 267
 268         fprintf(out, "func extern %s(", entity->base.symbol->string);
 269
 270         const function_type_t *function_type
 271                 = (const function_type_t*) entity->declaration.type;
 272
 273         entity_t *parameter = entity->function.parameters.entities;
 274         int       first     = 1;
 275         for( ; parameter != NULL; parameter = parameter->base.next) {
 276                 assert(parameter->kind == ENTITY_PARAMETER);
 277                 if(!first) {
 278                         fprintf(out, ", ");
 279                 } else {
 280                         first = 0;
 281                 }
 282                 if(parameter->base.symbol != NULL) {
 283                         fprintf(out, "%s : ", parameter->base.symbol->string);
 284                 } else {
 285                         fputs("_ : ", out);
 286                 }
 287                 write_type(parameter->declaration.type);
 288         }
 289         if(function_type->variadic) {
 290                 if(!first) {
 291                         fprintf(out, ", ");
 292                 }
 293                 fputs("...", out);
 294         }
 295         fprintf(out, ")");
 296
 297         const type_t *return_type = skip_typeref(function_type->return_type);
 298         if (!is_type_void(return_type)) {
 299                 fprintf(out, " : ");
 300                 write_type(return_type);
 301         }
 302         fputc('\n', out);
 303 }
 304
 305 void write_fluffy_decls(FILE *output, const translation_unit_t *unit)
 306 {
 307         out            = output;
 308         global_scope = &unit->scope;
 309
 310         print_to_file(out);
 311         fprintf(out, "/* WARNING: Automatically generated file */\n");
 312
 313         /* write structs,unions + enums */
 314         entity_t *entity = unit->scope.entities;
 315         for( ; entity != NULL; entity = entity->base.next) {
 316                 if (entity->kind != ENTITY_TYPEDEF)
 317                         continue;
 318
 319                 type_t *type = entity->typedefe.type;
 320                 if (is_type_compound(type)) {
 321                         write_compound(entity->base.symbol, &type->compound);
 322                 } else if(type->kind == TYPE_ENUM) {
 323                         write_enum(entity->base.symbol, &type->enumt);
 324                 }
 325         }
 326
 327         /* write global variables */
 328         entity = unit->scope.entities;
 329         for( ; entity != NULL; entity = entity->base.next) {
 330                 if (entity->kind != ENTITY_VARIABLE)
 331                         continue;
 332
 333                 write_variable(entity);
 334         }
 335
 336         /* write functions */
 337         entity = unit->scope.entities;
 338         for( ; entity != NULL; entity = entity->base.next) {
 339                 if (entity->kind != ENTITY_FUNCTION)
 340                         continue;
 341
 342                 write_function(entity);
 343         }
 344 }