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(args) ::= decl_arg(arg). {
  87         args = init_decl_args(arg);
  88 }
  89 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
  90         args = add_decl_arg(args_, arg);
  91 }
  92
  93 %type decl_type {decl_type*}
  94 decl_type(type_) ::= VOID(T). {
  95         type_ = init_decl_type(T->type, T->text);
  96         free(T);
  97 }
  98 decl_type(type_) ::= INT(T). {
  99         type_ = init_decl_type(T->type, T->text);
 100         free(T);
 101 }
 102 decl_type(type_) ::= FLOAT(T). {
 103         type_ = init_decl_type(T->type, T->text);
 104         free(T);
 105 }
 106 decl_type(type_) ::= DOUBLE(T). {
 107         type_ = init_decl_type(T->type, T->text);
 108         free(T);
 109 }
 110 decl_type(type_) ::= SINT8(T). {
 111         type_ = init_decl_type(T->type, T->text);
 112         free(T);
 113 }
 114 decl_type(type_) ::= UINT8(T). {
 115         type_ = init_decl_type(T->type, T->text);
 116         free(T);
 117 }
 118 decl_type(type_) ::= SINT16(T). {
 119         type_ = init_decl_type(T->type, T->text);
 120         free(T);
 121 }
 122 decl_type(type_) ::= UINT16(T). {
 123         type_ = init_decl_type(T->type, T->text);
 124         free(T);
 125 }
 126 decl_type(type_) ::= SINT32(T). {
 127         type_ = init_decl_type(T->type, T->text);
 128         free(T);
 129 }
 130 decl_type(type_) ::= UINT32(T). {
 131         type_ = init_decl_type(T->type, T->text);
 132         free(T);
 133 }
 134 decl_type(type_) ::= SINT64(T). {
 135         type_ = init_decl_type(T->type, T->text);
 136         free(T);
 137 }
 138 decl_type(type_) ::= UINT64(T). {
 139         type_ = init_decl_type(T->type, T->text);
 140         free(T);
 141 }
 142 decl_type(type_) ::= NAME(T). {
 143         type_ = init_decl_type(T->type, T->text);
 144         free(T);
 145 }
 146
 147 %type impl {impl*}
 148 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 149         impl = init_impl(func, stmts);
 150 }
 151
 152 %type impl_func {impl_func*}
 153 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN impl_args(args) RPAREN COLON impl_type(type). {
 154         func = init_impl_func(NAME->text, args, type);
 155         free(NAME);
 156 }
 157 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN RPAREN COLON impl_type(type). {
 158         func = init_impl_func(NAME->text, NULL, type);
 159         free(NAME);
 160 }
 161
 162 %type impl_def_val {impl_def_val*}
 163 impl_def_val(def) ::= NULL(T). {
 164         def = init_impl_def_val(T);
 165 }
 166 impl_def_val(def) ::= NUMBER(T). {
 167         def = init_impl_def_val(T);
 168 }
 169 impl_def_val(def) ::= TRUE(T). {
 170         def = init_impl_def_val(T);
 171 }
 172 impl_def_val(def) ::= FALSE(T). {
 173         def = init_impl_def_val(T);
 174 }
 175 impl_def_val(def) ::= QUOTED_STRING(T). {
 176         def = init_impl_def_val(T);
 177 }
 178
 179 %type impl_var {impl_var*}
 180 impl_var(var) ::= DOLLAR NAME(T). {
 181         var = init_impl_var(T->text, 0);
 182         free(T);
 183 }
 184 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 185         var = init_impl_var(T->text, 1);
 186         free(T);
 187 }
 188
 189 %type impl_arg {impl_arg*}
 190 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 191         arg = init_impl_arg(type, var, NULL);
 192 }
 193 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 194         arg = init_impl_arg(type, var, def);
 195 }
 196
 197 %type impl_args {impl_args*}
 198 impl_args(args) ::= impl_arg(arg). {
 199         args = init_impl_args(arg);
 200 }
 201 impl_args(args) ::= impl_args(args_) COMMA impl_arg(arg). {
 202         args = add_impl_arg(args_, arg);
 203 }
 204
 205 %type impl_stmts {impl_stmts*}
 206 impl_stmts(stmts) ::= impl_stmt(stmt). {
 207         stmts = init_impl_stmts(stmt);
 208 }
 209 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 210         stmts = add_impl_stmt(stmts_, stmt);
 211 }
 212
 213 %type impl_stmt {impl_stmt*}
 214 impl_stmt(stmt) ::= let_stmt(let). {
 215         stmt = init_impl_stmt(PSI_T_LET, let);
 216 }
 217 impl_stmt(stmt) ::= set_stmt(set). {
 218         stmt = init_impl_stmt(PSI_T_SET, set);
 219 }
 220 impl_stmt(stmt) ::= ret_stmt(ret). {
 221         stmt = init_impl_stmt(PSI_T_RET, ret);
 222 }
 223
 224 %type let_stmt {let_stmt*}
 225 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 226         let = init_let_stmt(var, val);
 227 }
 228
 229 %type let_value {let_value*}
 230 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 231         val = init_let_value(func, var, 0);
 232 }
 233 let_value(val) ::= REFERENCE NULL. {
 234         val = init_let_value(NULL, NULL, 1);
 235 }
 236 let_value(val) ::= NULL. {
 237         val = init_let_value(NULL, NULL, 0);
 238 }
 239
 240 %type let_func {let_func*}
 241 let_func(func) ::= STRLEN(T). {
 242         func = init_let_func(T->type, T->text);
 243         free(T);
 244 }
 245 let_func(func) ::= STRVAL(T). {
 246         func = init_let_func(T->type, T->text);
 247         free(T);
 248 }
 249 let_func(func) ::= INTVAL(T). {
 250         func = init_let_func(T->type, T->text);
 251         free(T);
 252 }
 253 let_func(func) ::= FLOATVAL(T). {
 254         func = init_let_func(T->type, T->text);
 255         free(T);
 256 }
 257 let_func(func) ::= BOOLVAL(T). {
 258         func = init_let_func(T->type, T->text);
 259         free(T);
 260 }
 261
 262 %type set_stmt {set_stmt*}
 263 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 264         set = init_set_stmt(var, val);
 265 }
 266
 267 %type set_value {set_value*}
 268 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 269         val = init_set_value(func, vars);
 270 }
 271
 272 %type set_func {set_func*}
 273 set_func(func) ::= TO_STRING(T). {
 274         func = init_set_func(T->type, T->text);
 275         free(T);
 276 }
 277 set_func(func) ::= TO_INT(T). {
 278         func = init_set_func(T->type, T->text);
 279         free(T);
 280 }
 281 set_func(func) ::= TO_FLOAT(T). {
 282         func = init_set_func(T->type, T->text);
 283         free(T);
 284 }
 285 set_func(func) ::= TO_BOOL(T). {
 286         func = init_set_func(T->type, T->text);
 287         free(T);
 288 }
 289
 290 %type ret_stmt {ret_stmt*}
 291 ret_stmt(ret) ::= RET set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 292         ret = init_ret_stmt(func, var);
 293 }
 294
 295 %type impl_type {impl_type*}
 296 impl_type(type_) ::= VOID(T). {
 297         type_ = init_impl_type(T->type, T->text);
 298         free(T);
 299 }
 300 impl_type(type_) ::= MIXED(T). {
 301         type_ = init_impl_type(T->type, T->text);
 302         free(T);
 303 }
 304 impl_type(type_) ::= BOOL(T). {
 305         type_ = init_impl_type(T->type, T->text);
 306         free(T);
 307 }
 308 impl_type(type_) ::= INT(T). {
 309         type_ = init_impl_type(T->type, T->text);
 310         free(T);
 311 }
 312 impl_type(type_) ::= FLOAT(T). {
 313         type_ = init_impl_type(T->type, T->text);
 314         free(T);
 315 }
 316 impl_type(type_) ::= STRING(T). {
 317         type_ = init_impl_type(T->type, T->text);
 318         free(T);
 319 }
 320 impl_type(type_) ::= ARRAY(T). {
 321         type_ = init_impl_type(T->type, T->text);
 322         free(T);
 323 }
 324
 325 %type pointers {unsigned}
 326 pointers(p) ::= POINTER. {++p;}
 327 pointers(p) ::= pointers(P) POINTER. {p = ++P;}