10 static void syntax_error(const char *fn, size_t ln, const char *msg, ...) {
11 fprintf(stderr, "WARNING: Syntax error on line %zu in '%s'%s", ln, fn, msg ? ": ": "\n");
16 vfprintf(stderr, msg, argv);
25 %token_type {PSI_Token *}
26 %token_destructor {free($$);}
27 %extra_argument {PSI_Lexer *L}
28 /* TOKEN is defined inside syntax_error */
30 syntax_error(L->fn, L->line, "Unexpected token '%s'.\n", TOKEN->text);
35 blocks ::= blocks block.
39 block ::= LIB(T) QUOTED_STRING(libname) EOS. {
41 syntax_error(L->fn, T->line, "Extra 'lib %s' statement has no effect.\n", libname->text);
43 L->lib = strndup(libname->text + 1, libname->size - 2);
49 block ::= decl(decl). {
50 L->decls = add_decl(L->decls, decl);
52 block ::= impl(impl). {
53 L->impls = add_impl(L->impls, impl);
55 block ::= decl_typedef(def). {
56 L->defs = add_decl_typedef(L->defs, def);
59 %type decl_typedef {decl_typedef*}
60 decl_typedef(def) ::= TYPEDEF NAME(ALIAS) decl_type(type) EOS. {
61 def = init_decl_typedef(ALIAS->text, type);
66 decl(decl) ::= decl_abi(abi) decl_arg(func) LPAREN decl_args(args) RPAREN EOS. {
67 decl = init_decl(abi, func, args);
70 %type decl_abi {decl_abi*}
71 decl_abi(abi) ::= NAME(T). {
72 abi = init_decl_abi(T->text);
75 %type decl_var {decl_var*}
76 decl_var(var) ::= NAME(T). {
77 var = init_decl_var(T->text, 0);
80 decl_var(var) ::= pointers(p) NAME(T). {
81 var = init_decl_var(T->text, p);
85 %type decl_vars {decl_vars*}
86 decl_vars(vars) ::= decl_var(var). {
87 vars = init_decl_vars(var);
89 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
90 vars = add_decl_var(vars_, var);
93 %type decl_arg {decl_arg*}
94 decl_arg(arg) ::= decl_type(type) decl_var(var). {
95 arg = init_decl_arg(type, var);
98 %type decl_args {decl_args*}
99 decl_args(args) ::= decl_arg(arg). {
100 args = init_decl_args(arg);
102 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
103 args = add_decl_arg(args_, arg);
106 %type decl_type {decl_type*}
107 decl_type(type_) ::= VOID(T). {
108 type_ = init_decl_type(T->type, T->text);
111 decl_type(type_) ::= INT(T). {
112 type_ = init_decl_type(T->type, T->text);
115 decl_type(type_) ::= FLOAT(T). {
116 type_ = init_decl_type(T->type, T->text);
119 decl_type(type_) ::= DOUBLE(T). {
120 type_ = init_decl_type(T->type, T->text);
123 decl_type(type_) ::= SINT8(T). {
124 type_ = init_decl_type(T->type, T->text);
127 decl_type(type_) ::= UINT8(T). {
128 type_ = init_decl_type(T->type, T->text);
131 decl_type(type_) ::= SINT16(T). {
132 type_ = init_decl_type(T->type, T->text);
135 decl_type(type_) ::= UINT16(T). {
136 type_ = init_decl_type(T->type, T->text);
139 decl_type(type_) ::= SINT32(T). {
140 type_ = init_decl_type(T->type, T->text);
143 decl_type(type_) ::= UINT32(T). {
144 type_ = init_decl_type(T->type, T->text);
147 decl_type(type_) ::= SINT64(T). {
148 type_ = init_decl_type(T->type, T->text);
151 decl_type(type_) ::= UINT64(T). {
152 type_ = init_decl_type(T->type, T->text);
155 decl_type(type_) ::= NAME(T). {
156 type_ = init_decl_type(T->type, T->text);
161 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
162 impl = init_impl(func, stmts);
165 %type impl_func {impl_func*}
166 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN impl_args(args) RPAREN COLON impl_type(type). {
167 func = init_impl_func(NAME->text, args, type);
170 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN RPAREN COLON impl_type(type). {
171 func = init_impl_func(NAME->text, NULL, type);
175 %type impl_def_val {impl_def_val*}
176 impl_def_val(def) ::= NULL. {
178 def = init_impl_def_val();
180 impl_def_val(def) ::= number. {
182 def = init_impl_def_val();
185 %type impl_var {impl_var*}
186 impl_var(var) ::= DOLLAR NAME(T). {
187 var = init_impl_var(T->text, 0);
190 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
191 var = init_impl_var(T->text, 1);
195 %type impl_arg {impl_arg*}
196 impl_arg(arg) ::= impl_type(type) impl_var(var). {
197 arg = init_impl_arg(type, var, NULL);
199 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
200 arg = init_impl_arg(type, var, def);
203 %type impl_args {impl_args*}
204 impl_args(args) ::= impl_arg(arg). {
205 args = init_impl_args(arg);
207 impl_args(args) ::= impl_args(args_) COMMA impl_arg(arg). {
208 args = add_impl_arg(args_, arg);
211 %type impl_stmts {impl_stmts*}
212 impl_stmts(stmts) ::= impl_stmt(stmt). {
213 stmts = init_impl_stmts(stmt);
215 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
216 stmts = add_impl_stmt(stmts_, stmt);
219 %type impl_stmt {impl_stmt*}
220 impl_stmt(stmt) ::= let_stmt(let). {
221 stmt = init_impl_stmt(PSI_T_LET, let);
223 impl_stmt(stmt) ::= set_stmt(set). {
224 stmt = init_impl_stmt(PSI_T_SET, set);
226 impl_stmt(stmt) ::= ret_stmt(ret). {
227 stmt = init_impl_stmt(PSI_T_RET, ret);
230 %type let_stmt {let_stmt*}
231 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
232 let = init_let_stmt(var, val);
235 %type let_value {let_value*}
236 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
237 val = init_let_value(func, var, 0);
239 let_value(val) ::= REFERENCE NULL. {
240 val = init_let_value(NULL, NULL, 1);
242 let_value(val) ::= NULL. {
243 val = init_let_value(NULL, NULL, 0);
246 %type let_func {let_func*}
247 let_func(func) ::= STRVAL(T). {
248 func = init_let_func(T->type, T->text);
251 let_func(func) ::= INTVAL(T). {
252 func = init_let_func(T->type, T->text);
255 let_func(func) ::= FLOATVAL(T). {
256 func = init_let_func(T->type, T->text);
259 let_func(func) ::= BOOLVAL(T). {
260 func = init_let_func(T->type, T->text);
264 %type set_stmt {set_stmt*}
265 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
266 set = init_set_stmt(var, val);
269 %type set_value {set_value*}
270 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
271 val = init_set_value(func, vars);
274 %type set_func {set_func*}
275 set_func(func) ::= TO_STRING(T). {
276 func = init_set_func(T->type, T->text);
279 set_func(func) ::= TO_INT(T). {
280 func = init_set_func(T->type, T->text);
283 set_func(func) ::= TO_FLOAT(T). {
284 func = init_set_func(T->type, T->text);
287 set_func(func) ::= TO_BOOL(T). {
288 func = init_set_func(T->type, T->text);
292 %type ret_stmt {ret_stmt*}
293 ret_stmt(ret) ::= RET set_func(func) LPAREN decl_var(var) RPAREN EOS. {
294 ret = init_ret_stmt(func, var);
297 %type impl_type {impl_type*}
298 impl_type(type_) ::= VOID(T). {
299 type_ = init_impl_type(T->type, T->text);
302 impl_type(type_) ::= MIXED(T). {
303 type_ = init_impl_type(T->type, T->text);
306 impl_type(type_) ::= BOOL(T). {
307 type_ = init_impl_type(T->type, T->text);
310 impl_type(type_) ::= INT(T). {
311 type_ = init_impl_type(T->type, T->text);
314 impl_type(type_) ::= FLOAT(T). {
315 type_ = init_impl_type(T->type, T->text);
318 impl_type(type_) ::= STRING(T). {
319 type_ = init_impl_type(T->type, T->text);
322 impl_type(type_) ::= ARRAY(T). {
323 type_ = init_impl_type(T->type, T->text);
328 digits ::= digits DIGIT.
329 decimals ::= digits DOT digits.
330 decimals ::= DOT digits.
331 decimals ::= digits DOT.
333 number ::= PLUS digits.
334 number ::= MINUS digits.
336 number ::= MINUS decimals.
337 number ::= PLUS decimals.
339 %type pointers {unsigned}
340 pointers(p) ::= POINTER. {++p;}
341 pointers(p) ::= pointers(P) POINTER. {p = ++P;}