git.m6w6.name Git - m6w6/ext-psi/blob - src/parser_proc.y

   1 %include {
   2 #include <assert.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "parser.h"
   7
   8 }
   9
  10 %name PSI_ParserProc
  11 %token_prefix PSI_T_
  12 %token_type {PSI_Token *}
  13 %token_destructor {free($$);}
  14 %extra_argument {PSI_Parser *P}
  15 /* TOKEN is defined inside syntax_error */
  16 %syntax_error {
  17         PSI_ParserSyntaxError(P, P->fn, P->line, "Unexpected token '%s'", TOKEN->text);
  18 }
  19 file ::= blocks.
  20
  21 blocks ::= block.
  22 blocks ::= blocks block.
  23
  24 block ::= COMMENT.
  25
  26 block ::= LIB(T) QUOTED_STRING(libname) EOS. {
  27         if (P->lib) {
  28                 PSI_ParserSyntaxError(P, P->fn, T->line, "Extra 'lib %s' statement has no effect", libname->text);
  29         } else {
  30                 P->lib = strndup(libname->text + 1, libname->size - 2);
  31         }
  32         free(libname);
  33         free(T);
  34 }
  35
  36 block ::= decl(decl). {
  37         P->decls = add_decl(P->decls, decl);
  38 }
  39 block ::= impl(impl). {
  40         P->impls = add_impl(P->impls, impl);
  41 }
  42 block ::= decl_typedef(def). {
  43         P->defs = add_decl_typedef(P->defs, def);
  44 }
  45
  46 %type decl_typedef {decl_typedef*}
  47 decl_typedef(def) ::= TYPEDEF NAME(ALIAS) decl_type(type) EOS. {
  48         def = init_decl_typedef(ALIAS->text, type);
  49         free(ALIAS);
  50 }
  51
  52 %type decl {decl*}
  53 decl(decl) ::= decl_abi(abi) decl_arg(func) LPAREN decl_args(args) RPAREN EOS. {
  54         decl = init_decl(abi, func, args);
  55 }
  56
  57 %type decl_abi {decl_abi*}
  58 decl_abi(abi) ::= NAME(T). {
  59         abi = init_decl_abi(T->text);
  60 }
  61
  62 %type decl_var {decl_var*}
  63 decl_var(var) ::= NAME(T). {
  64         var = init_decl_var(T->text, 0);
  65         free(T);
  66 }
  67 decl_var(var) ::= pointers(p) NAME(T). {
  68         var = init_decl_var(T->text, p);
  69         free(T);
  70 }
  71
  72 %type decl_vars {decl_vars*}
  73 decl_vars(vars) ::= decl_var(var). {
  74         vars = init_decl_vars(var);
  75 }
  76 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
  77         vars = add_decl_var(vars_, var);
  78 }
  79
  80 %type decl_arg {decl_arg*}
  81 decl_arg(arg) ::= decl_type(type) decl_var(var). {
  82         arg = init_decl_arg(type, var);
  83 }
  84
  85 %type decl_args {decl_args*}
  86 decl_args ::= VOID.
  87 decl_args(args) ::= decl_arg(arg). {
  88         args = init_decl_args(arg);
  89 }
  90 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
  91         args = add_decl_arg(args_, arg);
  92 }
  93
  94 %type decl_type {decl_type*}
  95 decl_type(type_) ::= VOID(T). {
  96         type_ = init_decl_type(T->type, T->text);
  97         free(T);
  98 }
  99 decl_type(type_) ::= CHAR(T). {
 100         type_ = init_decl_type(T->type, T->text);
 101         free(T);
 102 }
 103 decl_type(type_) ::= SHORT(T). {
 104         type_ = init_decl_type(T->type, T->text);
 105         free(T);
 106 }
 107 decl_type(type_) ::= INT(T). {
 108         type_ = init_decl_type(T->type, T->text);
 109         free(T);
 110 }
 111 decl_type(type_) ::= LONG(T). {
 112         type_ = init_decl_type(T->type, T->text);
 113         free(T);
 114 }
 115 decl_type(type_) ::= FLOAT(T). {
 116         type_ = init_decl_type(T->type, T->text);
 117         free(T);
 118 }
 119 decl_type(type_) ::= DOUBLE(T). {
 120         type_ = init_decl_type(T->type, T->text);
 121         free(T);
 122 }
 123 decl_type(type_) ::= SINT8(T). {
 124         type_ = init_decl_type(T->type, T->text);
 125         free(T);
 126 }
 127 decl_type(type_) ::= UINT8(T). {
 128         type_ = init_decl_type(T->type, T->text);
 129         free(T);
 130 }
 131 decl_type(type_) ::= SINT16(T). {
 132         type_ = init_decl_type(T->type, T->text);
 133         free(T);
 134 }
 135 decl_type(type_) ::= UINT16(T). {
 136         type_ = init_decl_type(T->type, T->text);
 137         free(T);
 138 }
 139 decl_type(type_) ::= SINT32(T). {
 140         type_ = init_decl_type(T->type, T->text);
 141         free(T);
 142 }
 143 decl_type(type_) ::= UINT32(T). {
 144         type_ = init_decl_type(T->type, T->text);
 145         free(T);
 146 }
 147 decl_type(type_) ::= SINT64(T). {
 148         type_ = init_decl_type(T->type, T->text);
 149         free(T);
 150 }
 151 decl_type(type_) ::= UINT64(T). {
 152         type_ = init_decl_type(T->type, T->text);
 153         free(T);
 154 }
 155 decl_type(type_) ::= NAME(T). {
 156         type_ = init_decl_type(T->type, T->text);
 157         free(T);
 158 }
 159
 160 %type impl {impl*}
 161 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 162         impl = init_impl(func, stmts);
 163 }
 164
 165 %type impl_func {impl_func*}
 166 impl_func(func) ::= FUNCTION NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 167         func = init_impl_func(NAME->text, args, type, 0);
 168         free(NAME);
 169 }
 170 impl_func(func) ::= FUNCTION REFERENCE NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 171         func = init_impl_func(NAME->text, args, type, 1);
 172         free(NAME);
 173 }
 174
 175 %type impl_def_val {impl_def_val*}
 176 impl_def_val(def) ::= NULL(T). {
 177         def = init_impl_def_val(T);
 178 }
 179 impl_def_val(def) ::= NUMBER(T). {
 180         def = init_impl_def_val(T);
 181 }
 182 impl_def_val(def) ::= TRUE(T). {
 183         def = init_impl_def_val(T);
 184 }
 185 impl_def_val(def) ::= FALSE(T). {
 186         def = init_impl_def_val(T);
 187 }
 188 impl_def_val(def) ::= QUOTED_STRING(T). {
 189         def = init_impl_def_val(T);
 190 }
 191
 192 %type impl_var {impl_var*}
 193 impl_var(var) ::= DOLLAR NAME(T). {
 194         var = init_impl_var(T->text, 0);
 195         free(T);
 196 }
 197 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 198         var = init_impl_var(T->text, 1);
 199         free(T);
 200 }
 201
 202 %type impl_arg {impl_arg*}
 203 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 204         arg = init_impl_arg(type, var, NULL);
 205 }
 206 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 207         arg = init_impl_arg(type, var, def);
 208 }
 209
 210 %type impl_args {impl_args*}
 211 impl_args(args) ::= LPAREN RPAREN. {
 212         args = NULL;
 213 }
 214 impl_args(args) ::= LPAREN impl_arg_list(args_) RPAREN. {
 215         args = args_;
 216 }
 217 %type impl_arg_list {impl_args*}
 218 impl_arg_list(args) ::= impl_arg(arg). {
 219         args = init_impl_args(arg);
 220 }
 221 impl_arg_list(args) ::= impl_arg_list(args_) COMMA impl_arg(arg). {
 222         args = add_impl_arg(args_, arg);
 223 }
 224
 225 %type impl_stmts {impl_stmts*}
 226 impl_stmts(stmts) ::= impl_stmt(stmt). {
 227         stmts = init_impl_stmts(stmt);
 228 }
 229 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 230         stmts = add_impl_stmt(stmts_, stmt);
 231 }
 232
 233 %type impl_stmt {impl_stmt*}
 234 impl_stmt(stmt) ::= let_stmt(let). {
 235         stmt = init_impl_stmt(PSI_T_LET, let);
 236 }
 237 impl_stmt(stmt) ::= set_stmt(set). {
 238         stmt = init_impl_stmt(PSI_T_SET, set);
 239 }
 240 impl_stmt(stmt) ::= return_stmt(ret). {
 241         stmt = init_impl_stmt(PSI_T_RETURN, ret);
 242 }
 243 impl_stmt(stmt) ::= free_stmt(free). {
 244         stmt = init_impl_stmt(PSI_T_FREE, free);
 245 }
 246
 247 %type let_stmt {let_stmt*}
 248 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 249         let = init_let_stmt(var, val);
 250 }
 251
 252 %type let_value {let_value*}
 253 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 254         val = init_let_value(func, var, 0);
 255 }
 256 let_value(val) ::= REFERENCE let_func(func) LPAREN impl_var(var) RPAREN. {
 257         val = init_let_value(func, var, 1);
 258 }
 259 let_value(val) ::= REFERENCE NULL. {
 260         val = init_let_value(NULL, NULL, 1);
 261 }
 262 let_value(val) ::= NULL. {
 263         val = init_let_value(NULL, NULL, 0);
 264 }
 265
 266 %type let_func {let_func*}
 267 let_func(func) ::= STRLEN(T). {
 268         func = init_let_func(T->type, T->text);
 269         free(T);
 270 }
 271 let_func(func) ::= STRVAL(T). {
 272         func = init_let_func(T->type, T->text);
 273         free(T);
 274 }
 275 let_func(func) ::= INTVAL(T). {
 276         func = init_let_func(T->type, T->text);
 277         free(T);
 278 }
 279 let_func(func) ::= FLOATVAL(T). {
 280         func = init_let_func(T->type, T->text);
 281         free(T);
 282 }
 283 let_func(func) ::= BOOLVAL(T). {
 284         func = init_let_func(T->type, T->text);
 285         free(T);
 286 }
 287
 288 %type set_stmt {set_stmt*}
 289 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 290         set = init_set_stmt(var, val);
 291 }
 292
 293 %type set_value {set_value*}
 294 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 295         val = init_set_value(func, vars);
 296 }
 297
 298 %type set_func {set_func*}
 299 set_func(func) ::= TO_STRING(T). {
 300         func = init_set_func(T->type, T->text);
 301         free(T);
 302 }
 303 set_func(func) ::= TO_INT(T). {
 304         func = init_set_func(T->type, T->text);
 305         free(T);
 306 }
 307 set_func(func) ::= TO_FLOAT(T). {
 308         func = init_set_func(T->type, T->text);
 309         free(T);
 310 }
 311 set_func(func) ::= TO_BOOL(T). {
 312         func = init_set_func(T->type, T->text);
 313         free(T);
 314 }
 315 set_func(func) ::= VOID(T). {
 316         func = init_set_func(T->type, T->text);
 317         free(T);
 318 }
 319
 320 %type return_stmt {return_stmt*}
 321 return_stmt(ret) ::= RETURN set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 322         ret = init_return_stmt(func, var);
 323 }
 324
 325 %type free_stmt {free_stmt*}
 326 free_stmt(free) ::= FREE decl_vars(vars) EOS. {
 327         free = init_free_stmt(vars);
 328 }
 329
 330 %type impl_type {impl_type*}
 331 impl_type(type_) ::= VOID(T). {
 332         type_ = init_impl_type(T->type, T->text);
 333         free(T);
 334 }
 335 impl_type(type_) ::= MIXED(T). {
 336         type_ = init_impl_type(T->type, T->text);
 337         free(T);
 338 }
 339 impl_type(type_) ::= BOOL(T). {
 340         type_ = init_impl_type(T->type, T->text);
 341         free(T);
 342 }
 343 impl_type(type_) ::= INT(T). {
 344         type_ = init_impl_type(T->type, T->text);
 345         free(T);
 346 }
 347 impl_type(type_) ::= FLOAT(T). {
 348         type_ = init_impl_type(T->type, T->text);
 349         free(T);
 350 }
 351 impl_type(type_) ::= STRING(T). {
 352         type_ = init_impl_type(T->type, T->text);
 353         free(T);
 354 }
 355 impl_type(type_) ::= ARRAY(T). {
 356         type_ = init_impl_type(T->type, T->text);
 357         free(T);
 358 }
 359
 360 %type pointers {unsigned}
 361 pointers(p) ::= POINTER. {++p;}
 362 pointers(p) ::= pointers(P) POINTER. {p = P+1;}