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'.\n", 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.\n", 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_) ::= INT(T). {
 100         type_ = init_decl_type(T->type, T->text);
 101         free(T);
 102 }
 103 decl_type(type_) ::= FLOAT(T). {
 104         type_ = init_decl_type(T->type, T->text);
 105         free(T);
 106 }
 107 decl_type(type_) ::= DOUBLE(T). {
 108         type_ = init_decl_type(T->type, T->text);
 109         free(T);
 110 }
 111 decl_type(type_) ::= SINT8(T). {
 112         type_ = init_decl_type(T->type, T->text);
 113         free(T);
 114 }
 115 decl_type(type_) ::= UINT8(T). {
 116         type_ = init_decl_type(T->type, T->text);
 117         free(T);
 118 }
 119 decl_type(type_) ::= SINT16(T). {
 120         type_ = init_decl_type(T->type, T->text);
 121         free(T);
 122 }
 123 decl_type(type_) ::= UINT16(T). {
 124         type_ = init_decl_type(T->type, T->text);
 125         free(T);
 126 }
 127 decl_type(type_) ::= SINT32(T). {
 128         type_ = init_decl_type(T->type, T->text);
 129         free(T);
 130 }
 131 decl_type(type_) ::= UINT32(T). {
 132         type_ = init_decl_type(T->type, T->text);
 133         free(T);
 134 }
 135 decl_type(type_) ::= SINT64(T). {
 136         type_ = init_decl_type(T->type, T->text);
 137         free(T);
 138 }
 139 decl_type(type_) ::= UINT64(T). {
 140         type_ = init_decl_type(T->type, T->text);
 141         free(T);
 142 }
 143 decl_type(type_) ::= NAME(T). {
 144         type_ = init_decl_type(T->type, T->text);
 145         free(T);
 146 }
 147
 148 %type impl {impl*}
 149 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 150         impl = init_impl(func, stmts);
 151 }
 152
 153 %type impl_func {impl_func*}
 154 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN impl_args(args) RPAREN COLON impl_type(type). {
 155         func = init_impl_func(NAME->text, args, type);
 156         free(NAME);
 157 }
 158 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN RPAREN COLON impl_type(type). {
 159         func = init_impl_func(NAME->text, NULL, type);
 160         free(NAME);
 161 }
 162
 163 %type impl_def_val {impl_def_val*}
 164 impl_def_val(def) ::= NULL(T). {
 165         def = init_impl_def_val(T);
 166 }
 167 impl_def_val(def) ::= NUMBER(T). {
 168         def = init_impl_def_val(T);
 169 }
 170 impl_def_val(def) ::= TRUE(T). {
 171         def = init_impl_def_val(T);
 172 }
 173 impl_def_val(def) ::= FALSE(T). {
 174         def = init_impl_def_val(T);
 175 }
 176 impl_def_val(def) ::= QUOTED_STRING(T). {
 177         def = init_impl_def_val(T);
 178 }
 179
 180 %type impl_var {impl_var*}
 181 impl_var(var) ::= DOLLAR NAME(T). {
 182         var = init_impl_var(T->text, 0);
 183         free(T);
 184 }
 185 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 186         var = init_impl_var(T->text, 1);
 187         free(T);
 188 }
 189
 190 %type impl_arg {impl_arg*}
 191 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 192         arg = init_impl_arg(type, var, NULL);
 193 }
 194 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 195         arg = init_impl_arg(type, var, def);
 196 }
 197
 198 %type impl_args {impl_args*}
 199 impl_args(args) ::= impl_arg(arg). {
 200         args = init_impl_args(arg);
 201 }
 202 impl_args(args) ::= impl_args(args_) COMMA impl_arg(arg). {
 203         args = add_impl_arg(args_, arg);
 204 }
 205
 206 %type impl_stmts {impl_stmts*}
 207 impl_stmts(stmts) ::= impl_stmt(stmt). {
 208         stmts = init_impl_stmts(stmt);
 209 }
 210 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 211         stmts = add_impl_stmt(stmts_, stmt);
 212 }
 213
 214 %type impl_stmt {impl_stmt*}
 215 impl_stmt(stmt) ::= let_stmt(let). {
 216         stmt = init_impl_stmt(PSI_T_LET, let);
 217 }
 218 impl_stmt(stmt) ::= set_stmt(set). {
 219         stmt = init_impl_stmt(PSI_T_SET, set);
 220 }
 221 impl_stmt(stmt) ::= ret_stmt(ret). {
 222         stmt = init_impl_stmt(PSI_T_RET, ret);
 223 }
 224
 225 %type let_stmt {let_stmt*}
 226 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 227         let = init_let_stmt(var, val);
 228 }
 229
 230 %type let_value {let_value*}
 231 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 232         val = init_let_value(func, var, 0);
 233 }
 234 let_value(val) ::= REFERENCE NULL. {
 235         val = init_let_value(NULL, NULL, 1);
 236 }
 237 let_value(val) ::= NULL. {
 238         val = init_let_value(NULL, NULL, 0);
 239 }
 240
 241 %type let_func {let_func*}
 242 let_func(func) ::= STRLEN(T). {
 243         func = init_let_func(T->type, T->text);
 244         free(T);
 245 }
 246 let_func(func) ::= STRVAL(T). {
 247         func = init_let_func(T->type, T->text);
 248         free(T);
 249 }
 250 let_func(func) ::= INTVAL(T). {
 251         func = init_let_func(T->type, T->text);
 252         free(T);
 253 }
 254 let_func(func) ::= FLOATVAL(T). {
 255         func = init_let_func(T->type, T->text);
 256         free(T);
 257 }
 258 let_func(func) ::= BOOLVAL(T). {
 259         func = init_let_func(T->type, T->text);
 260         free(T);
 261 }
 262
 263 %type set_stmt {set_stmt*}
 264 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 265         set = init_set_stmt(var, val);
 266 }
 267
 268 %type set_value {set_value*}
 269 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 270         val = init_set_value(func, vars);
 271 }
 272
 273 %type set_func {set_func*}
 274 set_func(func) ::= TO_STRING(T). {
 275         func = init_set_func(T->type, T->text);
 276         free(T);
 277 }
 278 set_func(func) ::= TO_INT(T). {
 279         func = init_set_func(T->type, T->text);
 280         free(T);
 281 }
 282 set_func(func) ::= TO_FLOAT(T). {
 283         func = init_set_func(T->type, T->text);
 284         free(T);
 285 }
 286 set_func(func) ::= TO_BOOL(T). {
 287         func = init_set_func(T->type, T->text);
 288         free(T);
 289 }
 290 set_func(func) ::= VOID(T). {
 291         func = init_set_func(T->type, T->text);
 292         free(T);
 293 }
 294
 295 %type ret_stmt {ret_stmt*}
 296 ret_stmt(ret) ::= RET set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 297         ret = init_ret_stmt(func, var);
 298 }
 299
 300 %type impl_type {impl_type*}
 301 impl_type(type_) ::= VOID(T). {
 302         type_ = init_impl_type(T->type, T->text);
 303         free(T);
 304 }
 305 impl_type(type_) ::= MIXED(T). {
 306         type_ = init_impl_type(T->type, T->text);
 307         free(T);
 308 }
 309 impl_type(type_) ::= BOOL(T). {
 310         type_ = init_impl_type(T->type, T->text);
 311         free(T);
 312 }
 313 impl_type(type_) ::= INT(T). {
 314         type_ = init_impl_type(T->type, T->text);
 315         free(T);
 316 }
 317 impl_type(type_) ::= FLOAT(T). {
 318         type_ = init_impl_type(T->type, T->text);
 319         free(T);
 320 }
 321 impl_type(type_) ::= STRING(T). {
 322         type_ = init_impl_type(T->type, T->text);
 323         free(T);
 324 }
 325 impl_type(type_) ::= ARRAY(T). {
 326         type_ = init_impl_type(T->type, T->text);
 327         free(T);
 328 }
 329
 330 %type pointers {unsigned}
 331 pointers(p) ::= POINTER. {++p;}
 332 pointers(p) ::= pointers(P) POINTER. {p = ++P;}