12 %token_type {PSI_Token *}
13 %token_destructor {free($$);}
14 %default_destructor {(void)P;}
15 %extra_argument {PSI_Parser *P}
16 /* TOKEN is defined inside syntax_error */
18 if (TOKEN && TOKEN->type != PSI_T_EOF) {
19 PSI_ParserSyntaxError(P, P->psi.file.fn, P->line, "Unexpected token '%s'", TOKEN->text);
21 PSI_ParserSyntaxError(P, P->psi.file.fn, P->line, "Unexpected end of input");
28 %fallback NAME TEMP FREE SET LET RETURN LIB INT UNSIGNED.
33 blocks ::= blocks block.
37 block ::= LIB(T) QUOTED_STRING(libname) EOS. {
39 PSI_ParserSyntaxError(P, P->psi.file.ln, T->line, "Extra 'lib %s' statement has no effect", libname->text);
41 P->psi.file.ln = strndup(libname->text + 1, libname->size - 2);
47 block ::= decl(decl). {
48 P->decls = add_decl(P->decls, decl);
50 block ::= impl(impl). {
51 P->impls = add_impl(P->impls, impl);
53 block ::= decl_typedef(def). {
54 P->defs = add_decl_typedef(P->defs, def);
55 if (def->type->strct) {
56 P->structs = add_decl_struct(P->structs, def->type->strct);
59 block ::= constant(constant). {
60 P->consts = add_constant(P->consts, constant);
62 block ::= decl_struct(strct). {
63 P->structs = add_decl_struct(P->structs, strct);
66 %type decl_struct {decl_struct*}
67 %destructor decl_struct {free_decl_struct($$);}
68 decl_struct(strct) ::= STRUCT NAME(N) struct_size(size_) LBRACE struct_args(args) RBRACE. {
69 strct = init_decl_struct(N->text, args);
74 %type struct_size {size_t}
75 struct_size(size) ::= . {
78 struct_size(size) ::= COLON COLON LPAREN NUMBER(SIZ) RPAREN. {
79 size = atol(SIZ->text);
83 %token_class const_type_token BOOL INT FLOAT STRING.
84 %type const_type {const_type*}
85 %destructor const_type {free_const_type($$);}
86 const_type(type_) ::= const_type_token(T). {
87 type_ = init_const_type(T->type, T->text);
90 %type constant {constant*}
91 %destructor constant {free_constant($$);}
92 constant(constant) ::= CONST const_type(type) NSNAME(T) EQUALS impl_def_val(val) EOS. {
93 constant = init_constant(type, T->text, val);
97 %type decl_typedef {decl_typedef*}
98 %destructor decl_typedef {free_decl_typedef($$);}
99 decl_typedef(def) ::= TYPEDEF decl_type(type) NAME(ALIAS) EOS. {
100 def = init_decl_typedef(ALIAS->text, type);
103 /* support opaque types */
104 decl_typedef(def) ::= TYPEDEF VOID(V) NAME(ALIAS) EOS. {
105 def = init_decl_typedef(ALIAS->text, init_decl_type(V->type, V->text));
109 decl_typedef(def) ::= TYPEDEF STRUCT(S) NAME(N) NAME(ALIAS) EOS. {
110 def = init_decl_typedef(ALIAS->text, init_decl_type(S->type, N->text));
115 decl_typedef(def) ::= TYPEDEF decl_struct(s) NAME(ALIAS) EOS. {
116 def = init_decl_typedef(ALIAS->text, init_decl_type(PSI_T_STRUCT, s->name));
117 def->type->strct = s;
122 %destructor decl {free_decl($$);}
123 decl(decl) ::= decl_abi(abi) decl_func(func) LPAREN decl_args(args) RPAREN EOS. {
124 decl = init_decl(abi, func, args);
127 %type decl_func {decl_arg*}
128 %destructor decl_func {free_decl_arg($$);}
129 decl_func(func) ::= decl_arg(arg). {
132 /* special case for void functions */
133 decl_func(func) ::= VOID(T) NAME(N). {
134 func = init_decl_arg(
135 init_decl_type(T->type, T->text),
136 init_decl_var(N->text, 0, 0)
142 %type decl_abi {decl_abi*}
143 %destructor decl_abi {free_decl_abi($$);}
144 decl_abi(abi) ::= NAME(T). {
145 abi = init_decl_abi(T->text);
149 %type decl_var {decl_var*}
150 %destructor decl_var {free_decl_var($$);}
151 decl_var(var) ::= indirection(p) NAME(T). {
152 var = init_decl_var(T->text, p, 0);
155 decl_var(var) ::= indirection(p) NAME(T) LBRACKET NUMBER(D) RBRACKET. {
156 var = init_decl_var(T->text, p+1, atol(D->text));
161 %type decl_vars {decl_vars*}
162 %destructor decl_vars {free_decl_vars($$);}
163 decl_vars(vars) ::= decl_var(var). {
164 vars = init_decl_vars(var);
166 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
167 vars = add_decl_var(vars_, var);
170 %type decl_arg {decl_arg*}
171 %destructor decl_arg {free_decl_arg($$);}
172 decl_arg(arg_) ::= const_decl_type(type) decl_var(var). {
173 arg_ = init_decl_arg(type, var);
175 /* void pointers need a specific rule */
176 decl_arg(arg_) ::= VOID(T) pointers(p) NAME(N). {
177 arg_ = init_decl_arg(
178 init_decl_type(T->type, T->text),
179 init_decl_var(N->text, p, 0)
184 decl_arg(arg_) ::= CONST VOID(T) pointers(p) NAME(N). {
185 arg_ = init_decl_arg(
186 init_decl_type(T->type, T->text),
187 init_decl_var(N->text, p, 0)
193 %type decl_args {decl_args*}
194 %destructor decl_args {free_decl_args($$);}
197 decl_args(args) ::= decl_arg(arg). {
198 args = init_decl_args(arg);
200 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
201 args = add_decl_arg(args_, arg);
203 %type struct_args {decl_args*}
204 %destructor struct_args {free_decl_args($$);}
205 struct_args(args) ::= struct_arg(arg). {
206 args = init_decl_args(arg);
208 struct_args(args) ::= struct_args(args_) struct_arg(arg). {
209 args = add_decl_arg(args_, arg);
211 %type struct_arg {decl_arg*}
212 %destructor struct_arg {free_decl_arg($$);}
213 struct_arg(arg) ::= decl_arg(arg_) struct_layout(layout_) EOS. {
214 arg_->layout = layout_;
218 %type struct_layout {decl_struct_layout*}
219 %destructor struct_layout {free_decl_struct_layout($$);}
220 struct_layout(layout) ::= . {
223 struct_layout(layout) ::= COLON COLON LPAREN NUMBER(POS) COMMA NUMBER(SIZ) RPAREN. {
224 layout = init_decl_struct_layout(atol(POS->text), atol(SIZ->text));
229 %token_class decl_type_token FLOAT DOUBLE INT8 UINT8 INT16 UINT16 INT32 UINT32 INT64 UINT64 NAME.
230 %type decl_type {decl_type*}
231 %destructor decl_type {free_decl_type($$);}
232 decl_type(type_) ::= decl_type_token(T). {
233 type_ = init_decl_type(T->type, T->text);
237 decl_type(type_) ::= UNSIGNED NAME(T). {
238 type_ = init_decl_type(T->type, T->text);
239 type_->name = realloc(type_->name, T->size + sizeof("unsigned"));
240 memmove(type_->name + sizeof("unsigned"), type_->name, T->size);
241 memcpy(type_->name, "unsigned", sizeof("unsigned")-1);
242 type_->name[sizeof("unsigned")] = ' ';
243 type_->name[T->size + sizeof("unsigned")] = 0;
246 /* we have to support plain int here because we have it in our lexer rules */
247 decl_type(type_) ::= INT(T). {
248 type_ = init_decl_type(PSI_T_NAME, T->text);
252 decl_type(type_) ::= STRUCT(S) NAME(T). {
253 type_ = init_decl_type(S->type, T->text);
258 %type const_decl_type {decl_type*}
259 %destructor const_decl_type {free_decl_type($$);}
260 const_decl_type(type) ::= decl_type(type_). {
263 const_decl_type(type) ::= CONST decl_type(type_). {
268 %destructor impl {free_impl($$);}
269 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
270 impl = init_impl(func, stmts);
273 %type impl_func {impl_func*}
274 %destructor impl_func {free_impl_func($$);}
275 impl_func(func) ::= FUNCTION reference(r) NSNAME(NAME) impl_args(args) COLON impl_type(type). {
276 func = init_impl_func(NAME->text, args, type, r);
280 %token_class impl_def_val_token NULL NUMBER TRUE FALSE QUOTED_STRING.
281 %type impl_def_val {impl_def_val*}
282 %destructor impl_def_val {free_impl_def_val($$);}
283 impl_def_val(def) ::= impl_def_val_token(T). {
284 def = init_impl_def_val(T->type, T->text);
288 %type impl_var {impl_var*}
289 %destructor impl_var {free_impl_var($$);}
290 impl_var(var) ::= reference(r) DOLLAR NAME(T). {
291 var = init_impl_var(T->text, r);
295 %type impl_arg {impl_arg*}
296 %destructor impl_arg {free_impl_arg($$);}
297 impl_arg(arg) ::= impl_type(type) impl_var(var). {
298 arg = init_impl_arg(type, var, NULL);
300 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
301 arg = init_impl_arg(type, var, def);
304 %type impl_args {impl_args*}
305 %destructor impl_args {free_impl_args($$);}
306 impl_args(args) ::= LPAREN RPAREN. {
309 impl_args(args) ::= LPAREN impl_arg_list(args_) RPAREN. {
312 %type impl_arg_list {impl_args*}
313 %destructor impl_arg_list {free_impl_args($$);}
314 impl_arg_list(args) ::= impl_arg(arg). {
315 args = init_impl_args(arg);
317 impl_arg_list(args) ::= impl_arg_list(args_) COMMA impl_arg(arg). {
318 args = add_impl_arg(args_, arg);
321 %type impl_stmts {impl_stmts*}
322 %destructor impl_stmts {free_impl_stmts($$);}
323 impl_stmts(stmts) ::= impl_stmt(stmt). {
324 stmts = init_impl_stmts(stmt);
326 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
327 stmts = add_impl_stmt(stmts_, stmt);
330 %type impl_stmt {impl_stmt*}
331 %destructor impl_stmt {free_impl_stmt($$);}
332 impl_stmt(stmt) ::= let_stmt(let). {
333 stmt = init_impl_stmt(PSI_T_LET, let);
335 impl_stmt(stmt) ::= set_stmt(set). {
336 stmt = init_impl_stmt(PSI_T_SET, set);
338 impl_stmt(stmt) ::= return_stmt(ret). {
339 stmt = init_impl_stmt(PSI_T_RETURN, ret);
341 impl_stmt(stmt) ::= free_stmt(free). {
342 stmt = init_impl_stmt(PSI_T_FREE, free);
345 %token_class num_exp_token NUMBER NSNAME.
346 %token_class num_exp_op_token PLUS MINUS ASTERISK SLASH.
347 %type num_exp {num_exp*}
348 %destructor num_exp {free_num_exp($$);}
349 num_exp(exp) ::= num_exp_token(tok). {
350 exp = init_num_exp(tok->type, tok->text);
353 num_exp(exp) ::= decl_var(var). {
354 exp = init_num_exp(PSI_T_NAME, var);
356 num_exp(exp) ::= num_exp(exp_) num_exp_op_token(operator_) num_exp(operand_). {
357 exp_->operator = operator_->type;
358 exp_->operand = operand_;
363 %type let_stmt {let_stmt*}
364 %destructor let_stmt {free_let_stmt($$);}
365 let_stmt(let) ::= LET decl_var(var) EOS. {
366 let = init_let_stmt(var, init_let_val(PSI_LET_NULL, NULL));
368 let_stmt(let) ::= LET decl_var(var) EQUALS reference(r) let_val(val) EOS. {
369 val->flags.one.is_reference = r ? 1 : 0;
370 let = init_let_stmt(var, val);
372 let_stmt(let) ::= TEMP decl_var(var) EQUALS decl_var(val) EOS. {
373 let = init_let_stmt(var, init_let_val(PSI_LET_TMP, val));
376 %type let_val {let_val*}
377 %destructor let_val {free_let_val($$);}
378 let_val(val) ::= NULL. {
379 val = init_let_val(PSI_LET_NULL, NULL);
381 let_val(val) ::= num_exp(exp). {
382 val = init_let_val(PSI_LET_NUMEXP, exp);
384 let_val(val) ::= CALLOC LPAREN let_calloc(alloc) RPAREN. {
385 val = init_let_val(PSI_LET_CALLOC, alloc);
387 let_val(val) ::= let_func(func). {
388 val = init_let_val(PSI_LET_FUNC, func);
391 %type let_calloc {let_calloc*}
392 %destructor let_calloc {free_let_calloc($$);}
393 let_calloc(alloc) ::= num_exp(nmemb) COMMA num_exp(size). {
394 alloc = init_let_calloc(nmemb, size);
396 %token_class let_func_token OBJVAL ARRVAL PATHVAL STRLEN STRVAL FLOATVAL INTVAL BOOLVAL.
397 %type let_func {let_func*}
398 %destructor let_func {free_let_func($$);}
399 let_func(func) ::= let_func_token(T) LPAREN impl_var(var) RPAREN. {
400 func = init_let_func(T->type, T->text, var);
405 %type set_stmt {set_stmt*}
406 %destructor set_stmt {free_set_stmt($$);}
407 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
408 set = init_set_stmt(var, val);
411 %type set_value {set_value*}
412 %destructor set_value {free_set_value($$);}
413 set_value(val) ::= set_func(func) LPAREN decl_var(var) RPAREN. {
414 val = init_set_value(func, init_decl_vars(var));
416 set_value(val) ::= set_func(func) LPAREN decl_var(var) COMMA num_exp(num_) RPAREN. {
417 val = init_set_value(func, init_decl_vars(var));
420 set_value(val) ::= set_func(func_) LPAREN decl_var(var) COMMA set_vals(vals) RPAREN. {
423 val->vars = init_decl_vars(var);
425 set_value(val) ::= set_func(func_) LPAREN decl_var(var) COMMA num_exp(num_) COMMA set_vals(vals) RPAREN. {
429 val->vars = init_decl_vars(var);
431 %type set_vals {set_value*}
432 %destructor set_vals {free_set_value($$);}
433 set_vals(vals) ::= set_value(val). {
434 vals = add_inner_set_value(init_set_value(NULL, NULL), val);
436 set_vals(vals) ::= set_vals(vals_) COMMA set_value(val). {
437 vals = add_inner_set_value(vals_, val);
440 %token_class set_func_token TO_OBJECT TO_ARRAY TO_STRING TO_INT TO_FLOAT TO_BOOL VOID.
441 %type set_func {set_func*}
442 %destructor set_func {free_set_func($$);}
443 set_func(func) ::= set_func_token(T). {
444 func = init_set_func(T->type, T->text);
448 %type return_stmt {return_stmt*}
449 %destructor return_stmt {free_return_stmt($$);}
450 return_stmt(ret) ::= RETURN set_value(val) EOS. {
451 ret = init_return_stmt(val);
454 %type free_stmt {free_stmt*}
455 %destructor free_stmt {free_free_stmt($$);}
456 free_stmt(free) ::= FREE free_calls(calls) EOS. {
457 free = init_free_stmt(calls);
460 %type free_calls {free_calls*}
461 %destructor free_calls {free_free_calls($$);}
462 free_calls(calls) ::= free_call(call). {
463 calls = init_free_calls(call);
465 free_calls(calls) ::= free_calls(calls_) COMMA free_call(call). {
466 calls = add_free_call(calls_, call);
469 %type free_call {free_call*}
470 %destructor free_call {free_free_call($$);}
471 free_call(call) ::= NAME(F) LPAREN decl_vars(vars) RPAREN. {
472 call = init_free_call(F->text, vars);
476 %token_class impl_type_token VOID MIXED BOOL INT FLOAT STRING ARRAY OBJECT.
477 %type impl_type {impl_type*}
478 %destructor impl_type {free_impl_type($$);}
479 impl_type(type_) ::= impl_type_token(T). {
480 type_ = init_impl_type(T->type, T->text);
484 %type reference {char}
485 reference(r) ::= . {r = 0;}
486 reference(r) ::= AMPERSAND. {r = 1;}
488 %type indirection {unsigned}
489 indirection(i) ::= . {i = 0;}
490 indirection(i) ::= pointers(p). {i = p;}
492 %type pointers {unsigned}
493 pointers(p) ::= ASTERISK. {p = 1;}
494 pointers(p) ::= pointers(P) ASTERISK. {p = P+1;}