1 |
/* |
2 |
* Copyright (c) 2014-2017 Christian Schoenebeck and Andreas Persson |
3 |
* |
4 |
* http://www.linuxsampler.org |
5 |
* |
6 |
* This file is part of LinuxSampler and released under the same terms. |
7 |
* See README file for details. |
8 |
*/ |
9 |
|
10 |
/* Parser for NKSP real-time instrument script language. */ |
11 |
|
12 |
%{ |
13 |
#define YYERROR_VERBOSE 1 |
14 |
#include "parser_shared.h" |
15 |
#include <string> |
16 |
#include <map> |
17 |
using namespace LinuxSampler; |
18 |
|
19 |
void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err); |
20 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt); |
21 |
int InstrScript_tnamerr(char* yyres, const char* yystr); |
22 |
int InstrScript_lex(YYSTYPE* lvalp, YYLTYPE* llocp, void* scanner); |
23 |
#define scanner context->scanner |
24 |
#define PARSE_ERR(loc,txt) yyerror(&loc, context, txt) |
25 |
#define PARSE_WRN(loc,txt) InstrScript_warning(&loc, context, txt) |
26 |
#define PARSE_DROP(loc) context->addPreprocessorComment(loc.first_line, loc.last_line, loc.first_column+1, loc.last_column+1); |
27 |
#define yytnamerr(res,str) InstrScript_tnamerr(res, str) |
28 |
%} |
29 |
|
30 |
// generate reentrant safe parser |
31 |
%pure-parser |
32 |
%parse-param { LinuxSampler::ParserContext* context } |
33 |
%lex-param { void* scanner } |
34 |
// avoid symbol collision with other (i.e. future) auto generated (f)lex scanners |
35 |
// (NOTE: "=" is deprecated here with Bison 3.x, however removing it would cause an error with Bison 2.x) |
36 |
%name-prefix="InstrScript_" |
37 |
%locations |
38 |
%defines |
39 |
%error-verbose |
40 |
|
41 |
%token <iValue> INTEGER "integer literal" |
42 |
%token <sValue> STRING "string literal" |
43 |
%token <sValue> IDENTIFIER "function name" |
44 |
%token <sValue> VARIABLE "variable name" |
45 |
%token ON "keyword 'on'" |
46 |
%token END "keyword 'end'" |
47 |
%token INIT "keyword 'init'" |
48 |
%token NOTE "keyword 'note'" |
49 |
%token RELEASE "keyword 'release'" |
50 |
%token CONTROLLER "keyword 'controller'" |
51 |
%token DECLARE "keyword 'declare'" |
52 |
%token ASSIGNMENT "operator ':='" |
53 |
%token CONST_ "keyword 'const'" |
54 |
%token POLYPHONIC "keyword 'polyphonic'" |
55 |
%token WHILE "keyword 'while'" |
56 |
%token SYNCHRONIZED "keyword 'synchronized'" |
57 |
%token IF "keyword 'if'" |
58 |
%token ELSE "keyword 'else'" |
59 |
%token SELECT "keyword 'select'" |
60 |
%token CASE "keyword 'case'" |
61 |
%token TO "keyword 'to'" |
62 |
%token OR "operator 'or'" |
63 |
%token AND "operator 'and'" |
64 |
%token NOT "operator 'not'" |
65 |
%token BITWISE_OR "bitwise operator '.or.'" |
66 |
%token BITWISE_AND "bitwise operator '.and.'" |
67 |
%token BITWISE_NOT "bitwise operator '.not.'" |
68 |
%token FUNCTION "keyword 'function'" |
69 |
%token CALL "keyword 'call'" |
70 |
%token MOD "operator 'mod'" |
71 |
%token LE "operator '<='" |
72 |
%token GE "operator '>='" |
73 |
%token END_OF_FILE 0 "end of file" |
74 |
%token UNKNOWN_CHAR "unknown character" |
75 |
|
76 |
%type <nEventHandlers> script sections |
77 |
%type <nEventHandler> section eventhandler |
78 |
%type <nStatements> statements opt_statements userfunctioncall |
79 |
%type <nStatement> statement assignment |
80 |
%type <nFunctionCall> functioncall |
81 |
%type <nArgs> args |
82 |
%type <nExpression> arg expr logical_or_expr logical_and_expr bitwise_or_expr bitwise_and_expr rel_expr add_expr mul_expr unary_expr concat_expr |
83 |
%type <nCaseBranch> caseclause |
84 |
%type <nCaseBranches> caseclauses |
85 |
|
86 |
%start script |
87 |
|
88 |
%% |
89 |
|
90 |
script: |
91 |
sections { |
92 |
$$ = context->handlers = $1; |
93 |
} |
94 |
|
95 |
sections: |
96 |
section { |
97 |
$$ = new EventHandlers(); |
98 |
if ($1) $$->add($1); |
99 |
} |
100 |
| sections section { |
101 |
$$ = $1; |
102 |
if ($2) $$->add($2); |
103 |
} |
104 |
|
105 |
section: |
106 |
function_declaration { |
107 |
$$ = EventHandlerRef(); |
108 |
} |
109 |
| eventhandler { |
110 |
$$ = $1; |
111 |
} |
112 |
|
113 |
eventhandler: |
114 |
ON NOTE opt_statements END ON { |
115 |
if (context->onNote) |
116 |
PARSE_ERR(@2, "Redeclaration of 'note' event handler."); |
117 |
context->onNote = new OnNote($3); |
118 |
$$ = context->onNote; |
119 |
} |
120 |
| ON INIT opt_statements END ON { |
121 |
if (context->onInit) |
122 |
PARSE_ERR(@2, "Redeclaration of 'init' event handler."); |
123 |
context->onInit = new OnInit($3); |
124 |
$$ = context->onInit; |
125 |
} |
126 |
| ON RELEASE opt_statements END ON { |
127 |
if (context->onRelease) |
128 |
PARSE_ERR(@2, "Redeclaration of 'release' event handler."); |
129 |
context->onRelease = new OnRelease($3); |
130 |
$$ = context->onRelease; |
131 |
} |
132 |
| ON CONTROLLER opt_statements END ON { |
133 |
if (context->onController) |
134 |
PARSE_ERR(@2, "Redeclaration of 'controller' event handler."); |
135 |
context->onController = new OnController($3); |
136 |
$$ = context->onController; |
137 |
} |
138 |
|
139 |
function_declaration: |
140 |
FUNCTION IDENTIFIER opt_statements END FUNCTION { |
141 |
const char* name = $2; |
142 |
if (context->functionProvider->functionByName(name)) { |
143 |
PARSE_ERR(@2, (String("There is already a built-in function with name '") + name + "'.").c_str()); |
144 |
} else if (context->userFunctionByName(name)) { |
145 |
PARSE_ERR(@2, (String("There is already a user defined function with name '") + name + "'.").c_str()); |
146 |
} else { |
147 |
context->userFnTable[name] = $3; |
148 |
} |
149 |
} |
150 |
|
151 |
opt_statements: |
152 |
/* epsilon (empty argument) */ { |
153 |
$$ = new Statements(); |
154 |
} |
155 |
| statements { |
156 |
$$ = $1; |
157 |
} |
158 |
|
159 |
statements: |
160 |
statement { |
161 |
$$ = new Statements(); |
162 |
if ($1) { |
163 |
if (!isNoOperation($1)) $$->add($1); // filter out NoOperation statements |
164 |
} else |
165 |
PARSE_WRN(@1, "Not a statement."); |
166 |
} |
167 |
| statements statement { |
168 |
$$ = $1; |
169 |
if ($2) { |
170 |
if (!isNoOperation($2)) $$->add($2); // filter out NoOperation statements |
171 |
} else |
172 |
PARSE_WRN(@2, "Not a statement."); |
173 |
} |
174 |
|
175 |
statement: |
176 |
functioncall { |
177 |
$$ = $1; |
178 |
} |
179 |
| userfunctioncall { |
180 |
$$ = $1; |
181 |
} |
182 |
| DECLARE VARIABLE { |
183 |
const char* name = $2; |
184 |
//printf("declared var '%s'\n", name); |
185 |
if (context->variableByName(name)) |
186 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
187 |
if (name[0] == '@') { |
188 |
context->vartable[name] = new StringVariable(context); |
189 |
$$ = new NoOperation; |
190 |
} else { |
191 |
context->vartable[name] = new IntVariable(context); |
192 |
$$ = new NoOperation; |
193 |
} |
194 |
} |
195 |
| DECLARE POLYPHONIC VARIABLE { |
196 |
const char* name = $3; |
197 |
//printf("declared polyphonic var '%s'\n", name); |
198 |
if (context->variableByName(name)) |
199 |
PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str()); |
200 |
if (name[0] != '$') { |
201 |
PARSE_ERR(@3, "Polyphonic variables may only be declared as integers."); |
202 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
203 |
} else { |
204 |
context->vartable[name] = new PolyphonicIntVariable(context); |
205 |
$$ = new NoOperation; |
206 |
} |
207 |
} |
208 |
| DECLARE VARIABLE ASSIGNMENT expr { |
209 |
const char* name = $2; |
210 |
//printf("declared assign var '%s'\n", name); |
211 |
if (context->variableByName(name)) |
212 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
213 |
if ($4->exprType() == STRING_EXPR) { |
214 |
if (name[0] == '$') |
215 |
PARSE_WRN(@2, (String("Variable '") + name + "' declared as integer, string expression assigned though.").c_str()); |
216 |
StringExprRef expr = $4; |
217 |
if (expr->isConstExpr()) { |
218 |
const String s = expr->evalStr(); |
219 |
StringVariableRef var = new StringVariable(context); |
220 |
context->vartable[name] = var; |
221 |
$$ = new Assignment(var, new StringLiteral(s)); |
222 |
} else { |
223 |
StringVariableRef var = new StringVariable(context); |
224 |
context->vartable[name] = var; |
225 |
$$ = new Assignment(var, expr); |
226 |
} |
227 |
} else { |
228 |
if (name[0] == '@') |
229 |
PARSE_WRN(@2, (String("Variable '") + name + "' declared as string, integer expression assigned though.").c_str()); |
230 |
IntExprRef expr = $4; |
231 |
if (expr->isConstExpr()) { |
232 |
const vmint i = expr->evalInt(); |
233 |
IntVariableRef var = new IntVariable(context); |
234 |
context->vartable[name] = var; |
235 |
$$ = new Assignment(var, new IntLiteral(i)); |
236 |
} else { |
237 |
IntVariableRef var = new IntVariable(context); |
238 |
context->vartable[name] = var; |
239 |
$$ = new Assignment(var, expr); |
240 |
} |
241 |
} |
242 |
} |
243 |
| DECLARE VARIABLE '[' expr ']' { |
244 |
//printf("declare array without args\n"); |
245 |
const char* name = $2; |
246 |
if (!$4->isConstExpr()) { |
247 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
248 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
249 |
} else if ($4->exprType() != INT_EXPR) { |
250 |
PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
251 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
252 |
} else if (context->variableByName(name)) { |
253 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
254 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
255 |
} else { |
256 |
IntExprRef expr = $4; |
257 |
vmint size = expr->evalInt(); |
258 |
if (size <= 0) { |
259 |
PARSE_ERR(@4, (String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str()); |
260 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
261 |
} else { |
262 |
context->vartable[name] = new IntArrayVariable(context, size); |
263 |
$$ = new NoOperation; |
264 |
} |
265 |
} |
266 |
} |
267 |
| DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
268 |
const char* name = $2; |
269 |
if (!$4->isConstExpr()) { |
270 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
271 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
272 |
} else if ($4->exprType() != INT_EXPR) { |
273 |
PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
274 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
275 |
} else if (context->variableByName(name)) { |
276 |
PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str()); |
277 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
278 |
} else { |
279 |
IntExprRef sizeExpr = $4; |
280 |
ArgsRef args = $8; |
281 |
vmint size = sizeExpr->evalInt(); |
282 |
if (size <= 0) { |
283 |
PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
284 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
285 |
} else if (args->argsCount() > size) { |
286 |
PARSE_ERR(@8, (String("Array variable '") + name + |
287 |
"' was declared with size " + ToString(size) + |
288 |
" but " + ToString(args->argsCount()) + |
289 |
" values were assigned." ).c_str()); |
290 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
291 |
} else { |
292 |
bool argsOK = true; |
293 |
for (vmint i = 0; i < args->argsCount(); ++i) { |
294 |
if (args->arg(i)->exprType() != INT_EXPR) { |
295 |
PARSE_ERR( |
296 |
@8, |
297 |
(String("Array variable '") + name + |
298 |
"' declared with invalid assignment values. Assigned element " + |
299 |
ToString(i+1) + " is not an integer expression.").c_str() |
300 |
); |
301 |
argsOK = false; |
302 |
break; |
303 |
} |
304 |
} |
305 |
if (argsOK) { |
306 |
context->vartable[name] = new IntArrayVariable(context, size, args); |
307 |
$$ = new NoOperation; |
308 |
} else |
309 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
310 |
} |
311 |
} |
312 |
} |
313 |
| DECLARE CONST_ VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
314 |
const char* name = $3; |
315 |
if (!$5->isConstExpr()) { |
316 |
PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
317 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
318 |
} else if ($5->exprType() != INT_EXPR) { |
319 |
PARSE_ERR(@5, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
320 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
321 |
} else if (context->variableByName(name)) { |
322 |
PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str()); |
323 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
324 |
} else { |
325 |
IntExprRef sizeExpr = $5; |
326 |
ArgsRef args = $9; |
327 |
vmint size = sizeExpr->evalInt(); |
328 |
if (size <= 0) { |
329 |
PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
330 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
331 |
} else if (args->argsCount() > size) { |
332 |
PARSE_ERR(@9, (String("Array variable '") + name + |
333 |
"' was declared with size " + ToString(size) + |
334 |
" but " + ToString(args->argsCount()) + |
335 |
" values were assigned." ).c_str()); |
336 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
337 |
} else { |
338 |
bool argsOK = true; |
339 |
for (vmint i = 0; i < args->argsCount(); ++i) { |
340 |
if (args->arg(i)->exprType() != INT_EXPR) { |
341 |
PARSE_ERR( |
342 |
@9, |
343 |
(String("Array variable '") + name + |
344 |
"' declared with invalid assignment values. Assigned element " + |
345 |
ToString(i+1) + " is not an integer expression.").c_str() |
346 |
); |
347 |
argsOK = false; |
348 |
break; |
349 |
} |
350 |
if (!args->arg(i)->isConstExpr()) { |
351 |
PARSE_ERR( |
352 |
@9, |
353 |
(String("const array variable '") + name + |
354 |
"' must be defined with const values. Assigned element " + |
355 |
ToString(i+1) + " is not a const expression though.").c_str() |
356 |
); |
357 |
argsOK = false; |
358 |
break; |
359 |
} |
360 |
} |
361 |
if (argsOK) { |
362 |
context->vartable[name] = new IntArrayVariable(context, size, args, true); |
363 |
$$ = new NoOperation; |
364 |
} else |
365 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
366 |
} |
367 |
} |
368 |
} |
369 |
| DECLARE CONST_ VARIABLE ASSIGNMENT expr { |
370 |
const char* name = $3; |
371 |
if ($5->exprType() == STRING_EXPR) { |
372 |
if (name[0] == '$') |
373 |
PARSE_WRN(@5, "Variable declared as integer, string expression assigned though."); |
374 |
String s; |
375 |
StringExprRef expr = $5; |
376 |
if (expr->isConstExpr()) |
377 |
s = expr->evalStr(); |
378 |
else |
379 |
PARSE_ERR(@5, (String("Assignment to const string variable '") + name + "' requires const expression.").c_str()); |
380 |
ConstStringVariableRef var = new ConstStringVariable(context, s); |
381 |
context->vartable[name] = var; |
382 |
//$$ = new Assignment(var, new StringLiteral(s)); |
383 |
$$ = new NoOperation(); |
384 |
} else { |
385 |
if (name[0] == '@') |
386 |
PARSE_WRN(@5, "Variable declared as string, integer expression assigned though."); |
387 |
vmint i = 0; |
388 |
IntExprRef expr = $5; |
389 |
if (expr->isConstExpr()) |
390 |
i = expr->evalInt(); |
391 |
else |
392 |
PARSE_ERR(@5, (String("Assignment to const integer variable '") + name + "' requires const expression.").c_str()); |
393 |
ConstIntVariableRef var = new ConstIntVariable(i); |
394 |
context->vartable[name] = var; |
395 |
//$$ = new Assignment(var, new IntLiteral(i)); |
396 |
$$ = new NoOperation(); |
397 |
} |
398 |
} |
399 |
| assignment { |
400 |
$$ = $1; |
401 |
} |
402 |
| WHILE '(' expr ')' opt_statements END WHILE { |
403 |
if ($3->exprType() == INT_EXPR) { |
404 |
$$ = new While($3, $5); |
405 |
} else { |
406 |
PARSE_ERR(@3, "Condition for 'while' loops must be integer expression."); |
407 |
$$ = new While(new IntLiteral(0), $5); |
408 |
} |
409 |
} |
410 |
| SYNCHRONIZED opt_statements END SYNCHRONIZED { |
411 |
$$ = new SyncBlock($2); |
412 |
} |
413 |
| IF '(' expr ')' opt_statements ELSE opt_statements END IF { |
414 |
$$ = new If($3, $5, $7); |
415 |
} |
416 |
| IF '(' expr ')' opt_statements END IF { |
417 |
$$ = new If($3, $5); |
418 |
} |
419 |
| SELECT expr caseclauses END SELECT { |
420 |
if ($2->exprType() == INT_EXPR) { |
421 |
$$ = new SelectCase($2, $3); |
422 |
} else { |
423 |
PARSE_ERR(@2, "Statement 'select' can only by applied to integer expressions."); |
424 |
$$ = new SelectCase(new IntLiteral(0), $3); |
425 |
} |
426 |
} |
427 |
|
428 |
caseclauses: |
429 |
caseclause { |
430 |
$$ = CaseBranches(); |
431 |
$$.push_back($1); |
432 |
} |
433 |
| caseclauses caseclause { |
434 |
$$ = $1; |
435 |
$$.push_back($2); |
436 |
} |
437 |
|
438 |
caseclause: |
439 |
CASE INTEGER opt_statements { |
440 |
$$ = CaseBranch(); |
441 |
$$.from = new IntLiteral($2); |
442 |
$$.statements = $3; |
443 |
} |
444 |
| CASE INTEGER TO INTEGER opt_statements { |
445 |
$$ = CaseBranch(); |
446 |
$$.from = new IntLiteral($2); |
447 |
$$.to = new IntLiteral($4); |
448 |
$$.statements = $5; |
449 |
} |
450 |
|
451 |
userfunctioncall: |
452 |
CALL IDENTIFIER { |
453 |
const char* name = $2; |
454 |
StatementsRef fn = context->userFunctionByName(name); |
455 |
if (context->functionProvider->functionByName(name)) { |
456 |
PARSE_ERR(@1, (String("Keyword 'call' must only be used for user defined functions, not for any built-in function like '") + name + "'.").c_str()); |
457 |
$$ = StatementsRef(); |
458 |
} else if (!fn) { |
459 |
PARSE_ERR(@2, (String("No user defined function with name '") + name + "'.").c_str()); |
460 |
$$ = StatementsRef(); |
461 |
} else { |
462 |
$$ = fn; |
463 |
} |
464 |
} |
465 |
|
466 |
functioncall: |
467 |
IDENTIFIER '(' args ')' { |
468 |
const char* name = $1; |
469 |
//printf("function call of '%s' with args\n", name); |
470 |
ArgsRef args = $3; |
471 |
VMFunction* fn = context->functionProvider->functionByName(name); |
472 |
if (context->userFunctionByName(name)) { |
473 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
474 |
$$ = new FunctionCall(name, args, NULL); |
475 |
} else if (!fn) { |
476 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
477 |
$$ = new FunctionCall(name, args, NULL); |
478 |
} else if (context->functionProvider->isFunctionDisabled(fn,context)) { |
479 |
PARSE_DROP(@$); |
480 |
$$ = new NoFunctionCall; |
481 |
} else if (args->argsCount() < fn->minRequiredArgs()) { |
482 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
483 |
$$ = new FunctionCall(name, args, NULL); |
484 |
} else if (args->argsCount() > fn->maxAllowedArgs()) { |
485 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' accepts max. " + ToString(fn->maxAllowedArgs()) + " arguments.").c_str()); |
486 |
$$ = new FunctionCall(name, args, NULL); |
487 |
} else { |
488 |
bool argsOK = true; |
489 |
for (vmint i = 0; i < args->argsCount(); ++i) { |
490 |
if (args->arg(i)->exprType() != fn->argType(i) && !fn->acceptsArgType(i, args->arg(i)->exprType())) { |
491 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects " + typeStr(fn->argType(i)) + " type, but type " + typeStr(args->arg(i)->exprType()) + " was given instead.").c_str()); |
492 |
argsOK = false; |
493 |
break; |
494 |
} else if (fn->modifiesArg(i) && !args->arg(i)->isModifyable()) { |
495 |
PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects an assignable variable.").c_str()); |
496 |
argsOK = false; |
497 |
break; |
498 |
} |
499 |
} |
500 |
$$ = new FunctionCall(name, args, argsOK ? fn : NULL); |
501 |
} |
502 |
} |
503 |
| IDENTIFIER '(' ')' { |
504 |
const char* name = $1; |
505 |
//printf("function call of '%s' (with empty args)\n", name); |
506 |
ArgsRef args = new Args; |
507 |
VMFunction* fn = context->functionProvider->functionByName(name); |
508 |
if (context->userFunctionByName(name)) { |
509 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
510 |
$$ = new FunctionCall(name, args, NULL); |
511 |
} else if (!fn) { |
512 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
513 |
$$ = new FunctionCall(name, args, NULL); |
514 |
} else if (context->functionProvider->isFunctionDisabled(fn,context)) { |
515 |
PARSE_DROP(@$); |
516 |
$$ = new NoFunctionCall; |
517 |
} else if (fn->minRequiredArgs() > 0) { |
518 |
PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
519 |
$$ = new FunctionCall(name, args, NULL); |
520 |
} else { |
521 |
$$ = new FunctionCall(name, args, fn); |
522 |
} |
523 |
} |
524 |
| IDENTIFIER { |
525 |
const char* name = $1; |
526 |
//printf("function call of '%s' (without args)\n", name); |
527 |
ArgsRef args = new Args; |
528 |
VMFunction* fn = context->functionProvider->functionByName(name); |
529 |
if (context->userFunctionByName(name)) { |
530 |
PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str()); |
531 |
$$ = new FunctionCall(name, args, NULL); |
532 |
} else if (!fn) { |
533 |
PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str()); |
534 |
$$ = new FunctionCall(name, args, NULL); |
535 |
} else if (context->functionProvider->isFunctionDisabled(fn,context)) { |
536 |
PARSE_DROP(@$); |
537 |
$$ = new NoFunctionCall; |
538 |
} else if (fn->minRequiredArgs() > 0) { |
539 |
PARSE_ERR(@1, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
540 |
$$ = new FunctionCall(name, args, NULL); |
541 |
} else { |
542 |
$$ = new FunctionCall(name, args, fn); |
543 |
} |
544 |
} |
545 |
|
546 |
args: |
547 |
arg { |
548 |
$$ = new Args(); |
549 |
$$->add($1); |
550 |
} |
551 |
| args ',' arg { |
552 |
$$ = $1; |
553 |
$$->add($3); |
554 |
} |
555 |
|
556 |
arg: |
557 |
expr |
558 |
|
559 |
assignment: |
560 |
VARIABLE ASSIGNMENT expr { |
561 |
//printf("variable lookup with name '%s' as assignment expr\n", $1); |
562 |
const char* name = $1; |
563 |
VariableRef var = context->variableByName(name); |
564 |
if (!var) |
565 |
PARSE_ERR(@1, (String("Variable assignment: No variable declared with name '") + name + "'.").c_str()); |
566 |
else if (var->isConstExpr()) |
567 |
PARSE_ERR(@2, (String("Variable assignment: Cannot modify const variable '") + name + "'.").c_str()); |
568 |
else if (!var->isAssignable()) |
569 |
PARSE_ERR(@2, (String("Variable assignment: Variable '") + name + "' is not assignable.").c_str()); |
570 |
else if (var->exprType() != $3->exprType()) |
571 |
PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str()); |
572 |
$$ = new Assignment(var, $3); |
573 |
} |
574 |
| VARIABLE '[' expr ']' ASSIGNMENT expr { |
575 |
const char* name = $1; |
576 |
VariableRef var = context->variableByName(name); |
577 |
if (!var) |
578 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
579 |
else if (var->exprType() != INT_ARR_EXPR) |
580 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
581 |
else if (var->isConstExpr()) |
582 |
PARSE_ERR(@5, (String("Variable assignment: Cannot modify const array variable '") + name + "'.").c_str()); |
583 |
else if (!var->isAssignable()) |
584 |
PARSE_ERR(@5, (String("Variable assignment: Array variable '") + name + "' is not assignable.").c_str()); |
585 |
else if ($3->exprType() != INT_EXPR) |
586 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
587 |
else if ($6->exprType() != INT_EXPR) |
588 |
PARSE_ERR(@5, (String("Value assigned to array variable '") + name + "' must be an integer expression.").c_str()); |
589 |
else if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((IntArrayVariableRef)var)->arraySize()) |
590 |
PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) + |
591 |
" exceeds size of array variable '" + name + |
592 |
"' which was declared with size " + |
593 |
ToString(((IntArrayVariableRef)var)->arraySize()) + ".").c_str()); |
594 |
IntArrayElementRef element = new IntArrayElement(var, $3); |
595 |
$$ = new Assignment(element, $6); |
596 |
} |
597 |
|
598 |
unary_expr: |
599 |
INTEGER { |
600 |
$$ = new IntLiteral($1); |
601 |
} |
602 |
| STRING { |
603 |
$$ = new StringLiteral($1); |
604 |
} |
605 |
| VARIABLE { |
606 |
//printf("variable lookup with name '%s' as unary expr\n", $1); |
607 |
VariableRef var = context->variableByName($1); |
608 |
if (var) |
609 |
$$ = var; |
610 |
else { |
611 |
PARSE_ERR(@1, (String("No variable declared with name '") + $1 + "'.").c_str()); |
612 |
$$ = new IntLiteral(0); |
613 |
} |
614 |
} |
615 |
| VARIABLE '[' expr ']' { |
616 |
const char* name = $1; |
617 |
VariableRef var = context->variableByName(name); |
618 |
if (!var) { |
619 |
PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str()); |
620 |
$$ = new IntLiteral(0); |
621 |
} else if (var->exprType() != INT_ARR_EXPR) { |
622 |
PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str()); |
623 |
$$ = new IntLiteral(0); |
624 |
} else if ($3->exprType() != INT_EXPR) { |
625 |
PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
626 |
$$ = new IntLiteral(0); |
627 |
} else { |
628 |
if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((IntArrayVariableRef)var)->arraySize()) |
629 |
PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) + |
630 |
" exceeds size of array variable '" + name + |
631 |
"' which was declared with size " + |
632 |
ToString(((IntArrayVariableRef)var)->arraySize()) + ".").c_str()); |
633 |
$$ = new IntArrayElement(var, $3); |
634 |
} |
635 |
} |
636 |
| '(' expr ')' { |
637 |
$$ = $2; |
638 |
} |
639 |
| functioncall { |
640 |
$$ = $1; |
641 |
} |
642 |
| '-' unary_expr { |
643 |
$$ = new Neg($2); |
644 |
} |
645 |
| BITWISE_NOT unary_expr { |
646 |
if ($2->exprType() != INT_EXPR) { |
647 |
PARSE_ERR(@2, (String("Right operand of bitwise operator '.not.' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
648 |
$$ = new IntLiteral(0); |
649 |
} else { |
650 |
$$ = new BitwiseNot($2); |
651 |
} |
652 |
} |
653 |
| NOT unary_expr { |
654 |
if ($2->exprType() != INT_EXPR) { |
655 |
PARSE_ERR(@2, (String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
656 |
$$ = new IntLiteral(0); |
657 |
} else { |
658 |
$$ = new Not($2); |
659 |
} |
660 |
} |
661 |
|
662 |
expr: |
663 |
concat_expr |
664 |
|
665 |
concat_expr: |
666 |
logical_or_expr |
667 |
| concat_expr '&' logical_or_expr { |
668 |
ExpressionRef lhs = $1; |
669 |
ExpressionRef rhs = $3; |
670 |
if (lhs->isConstExpr() && rhs->isConstExpr()) { |
671 |
$$ = new StringLiteral( |
672 |
lhs->evalCastToStr() + rhs->evalCastToStr() |
673 |
); |
674 |
} else { |
675 |
$$ = new ConcatString(lhs, rhs); |
676 |
} |
677 |
} |
678 |
|
679 |
logical_or_expr: |
680 |
logical_and_expr |
681 |
| logical_or_expr OR logical_and_expr { |
682 |
ExpressionRef lhs = $1; |
683 |
ExpressionRef rhs = $3; |
684 |
if (lhs->exprType() != INT_EXPR) { |
685 |
PARSE_ERR(@1, (String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
686 |
$$ = new IntLiteral(0); |
687 |
} else if (rhs->exprType() != INT_EXPR) { |
688 |
PARSE_ERR(@3, (String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
689 |
$$ = new IntLiteral(0); |
690 |
} else { |
691 |
$$ = new Or(lhs, rhs); |
692 |
} |
693 |
} |
694 |
|
695 |
logical_and_expr: |
696 |
bitwise_or_expr { |
697 |
$$ = $1; |
698 |
} |
699 |
| logical_and_expr AND bitwise_or_expr { |
700 |
ExpressionRef lhs = $1; |
701 |
ExpressionRef rhs = $3; |
702 |
if (lhs->exprType() != INT_EXPR) { |
703 |
PARSE_ERR(@1, (String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
704 |
$$ = new IntLiteral(0); |
705 |
} else if (rhs->exprType() != INT_EXPR) { |
706 |
PARSE_ERR(@3, (String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
707 |
$$ = new IntLiteral(0); |
708 |
} else { |
709 |
$$ = new And(lhs, rhs); |
710 |
} |
711 |
} |
712 |
|
713 |
bitwise_or_expr: |
714 |
bitwise_and_expr |
715 |
| bitwise_or_expr BITWISE_OR bitwise_and_expr { |
716 |
ExpressionRef lhs = $1; |
717 |
ExpressionRef rhs = $3; |
718 |
if (lhs->exprType() != INT_EXPR) { |
719 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
720 |
$$ = new IntLiteral(0); |
721 |
} else if (rhs->exprType() != INT_EXPR) { |
722 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
723 |
$$ = new IntLiteral(0); |
724 |
} else { |
725 |
$$ = new BitwiseOr(lhs, rhs); |
726 |
} |
727 |
} |
728 |
|
729 |
bitwise_and_expr: |
730 |
rel_expr { |
731 |
$$ = $1; |
732 |
} |
733 |
| bitwise_and_expr BITWISE_AND rel_expr { |
734 |
ExpressionRef lhs = $1; |
735 |
ExpressionRef rhs = $3; |
736 |
if (lhs->exprType() != INT_EXPR) { |
737 |
PARSE_ERR(@1, (String("Left operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
738 |
$$ = new IntLiteral(0); |
739 |
} else if (rhs->exprType() != INT_EXPR) { |
740 |
PARSE_ERR(@3, (String("Right operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
741 |
$$ = new IntLiteral(0); |
742 |
} else { |
743 |
$$ = new BitwiseAnd(lhs, rhs); |
744 |
} |
745 |
} |
746 |
|
747 |
rel_expr: |
748 |
add_expr |
749 |
| rel_expr '<' add_expr { |
750 |
ExpressionRef lhs = $1; |
751 |
ExpressionRef rhs = $3; |
752 |
if (lhs->exprType() != INT_EXPR) { |
753 |
PARSE_ERR(@1, (String("Left operand of operator '<' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
754 |
$$ = new IntLiteral(0); |
755 |
} else if (rhs->exprType() != INT_EXPR) { |
756 |
PARSE_ERR(@3, (String("Right operand of operator '<' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
757 |
$$ = new IntLiteral(0); |
758 |
} else { |
759 |
$$ = new Relation(lhs, Relation::LESS_THAN, rhs); |
760 |
} |
761 |
} |
762 |
| rel_expr '>' add_expr { |
763 |
ExpressionRef lhs = $1; |
764 |
ExpressionRef rhs = $3; |
765 |
if (lhs->exprType() != INT_EXPR) { |
766 |
PARSE_ERR(@1, (String("Left operand of operator '>' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
767 |
$$ = new IntLiteral(0); |
768 |
} else if (rhs->exprType() != INT_EXPR) { |
769 |
PARSE_ERR(@3, (String("Right operand of operator '>' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
770 |
$$ = new IntLiteral(0); |
771 |
} else { |
772 |
$$ = new Relation(lhs, Relation::GREATER_THAN, rhs); |
773 |
} |
774 |
} |
775 |
| rel_expr LE add_expr { |
776 |
ExpressionRef lhs = $1; |
777 |
ExpressionRef rhs = $3; |
778 |
if (lhs->exprType() != INT_EXPR) { |
779 |
PARSE_ERR(@1, (String("Left operand of operator '<=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
780 |
$$ = new IntLiteral(0); |
781 |
} else if (rhs->exprType() != INT_EXPR) { |
782 |
PARSE_ERR(@3, (String("Right operand of operator '<=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
783 |
$$ = new IntLiteral(0); |
784 |
} else { |
785 |
$$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs); |
786 |
} |
787 |
} |
788 |
| rel_expr GE add_expr { |
789 |
ExpressionRef lhs = $1; |
790 |
ExpressionRef rhs = $3; |
791 |
if (lhs->exprType() != INT_EXPR) { |
792 |
PARSE_ERR(@1, (String("Left operand of operator '>=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
793 |
$$ = new IntLiteral(0); |
794 |
} else if (rhs->exprType() != INT_EXPR) { |
795 |
PARSE_ERR(@3, (String("Right operand of operator '>=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
796 |
$$ = new IntLiteral(0); |
797 |
} else { |
798 |
$$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs); |
799 |
} |
800 |
} |
801 |
| rel_expr '=' add_expr { |
802 |
$$ = new Relation($1, Relation::EQUAL, $3); |
803 |
} |
804 |
| rel_expr '#' add_expr { |
805 |
$$ = new Relation($1, Relation::NOT_EQUAL, $3); |
806 |
} |
807 |
|
808 |
add_expr: |
809 |
mul_expr |
810 |
| add_expr '+' mul_expr { |
811 |
ExpressionRef lhs = $1; |
812 |
ExpressionRef rhs = $3; |
813 |
if (lhs->exprType() != INT_EXPR) { |
814 |
PARSE_ERR(@1, (String("Left operand of operator '+' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
815 |
$$ = new IntLiteral(0); |
816 |
} else if (rhs->exprType() != INT_EXPR) { |
817 |
PARSE_ERR(@3, (String("Right operand of operator '+' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
818 |
$$ = new IntLiteral(0); |
819 |
} else { |
820 |
$$ = new Add(lhs,rhs); |
821 |
} |
822 |
} |
823 |
| add_expr '-' mul_expr { |
824 |
ExpressionRef lhs = $1; |
825 |
ExpressionRef rhs = $3; |
826 |
if (lhs->exprType() != INT_EXPR) { |
827 |
PARSE_ERR(@1, (String("Left operand of operator '-' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
828 |
$$ = new IntLiteral(0); |
829 |
} else if (rhs->exprType() != INT_EXPR) { |
830 |
PARSE_ERR(@3, (String("Right operand of operator '-' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
831 |
$$ = new IntLiteral(0); |
832 |
} else { |
833 |
$$ = new Sub(lhs,rhs); |
834 |
} |
835 |
} |
836 |
|
837 |
mul_expr: |
838 |
unary_expr |
839 |
| mul_expr '*' unary_expr { |
840 |
ExpressionRef lhs = $1; |
841 |
ExpressionRef rhs = $3; |
842 |
if (lhs->exprType() != INT_EXPR) { |
843 |
PARSE_ERR(@1, (String("Left operand of operator '*' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
844 |
$$ = new IntLiteral(0); |
845 |
} else if (rhs->exprType() != INT_EXPR) { |
846 |
PARSE_ERR(@3, (String("Right operand of operator '*' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
847 |
$$ = new IntLiteral(0); |
848 |
} else { |
849 |
$$ = new Mul(lhs,rhs); |
850 |
} |
851 |
} |
852 |
| mul_expr '/' unary_expr { |
853 |
ExpressionRef lhs = $1; |
854 |
ExpressionRef rhs = $3; |
855 |
if (lhs->exprType() != INT_EXPR) { |
856 |
PARSE_ERR(@1, (String("Left operand of operator '/' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
857 |
$$ = new IntLiteral(0); |
858 |
} else if (rhs->exprType() != INT_EXPR) { |
859 |
PARSE_ERR(@3, (String("Right operand of operator '/' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
860 |
$$ = new IntLiteral(0); |
861 |
} else { |
862 |
$$ = new Div(lhs,rhs); |
863 |
} |
864 |
} |
865 |
| mul_expr MOD unary_expr { |
866 |
ExpressionRef lhs = $1; |
867 |
ExpressionRef rhs = $3; |
868 |
if (lhs->exprType() != INT_EXPR) { |
869 |
PARSE_ERR(@1, (String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
870 |
$$ = new IntLiteral(0); |
871 |
} else if (rhs->exprType() != INT_EXPR) { |
872 |
PARSE_ERR(@3, (String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
873 |
$$ = new IntLiteral(0); |
874 |
} else { |
875 |
$$ = new Mod(lhs,rhs); |
876 |
} |
877 |
} |
878 |
|
879 |
%% |
880 |
|
881 |
void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err) { |
882 |
//fprintf(stderr, "%d: %s\n", locp->first_line, err); |
883 |
context->addErr(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, err); |
884 |
} |
885 |
|
886 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt) { |
887 |
//fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt); |
888 |
context->addWrn(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, txt); |
889 |
} |
890 |
|
891 |
/// Custom implementation of yytnamerr() to ensure quotation is always stripped from token names before printing them to error messages. |
892 |
int InstrScript_tnamerr(char* yyres, const char* yystr) { |
893 |
if (*yystr == '"') { |
894 |
int yyn = 0; |
895 |
char const *yyp = yystr; |
896 |
for (;;) |
897 |
switch (*++yyp) |
898 |
{ |
899 |
/* |
900 |
case '\'': |
901 |
case ',': |
902 |
goto do_not_strip_quotes; |
903 |
|
904 |
case '\\': |
905 |
if (*++yyp != '\\') |
906 |
goto do_not_strip_quotes; |
907 |
*/ |
908 |
/* Fall through. */ |
909 |
default: |
910 |
if (yyres) |
911 |
yyres[yyn] = *yyp; |
912 |
yyn++; |
913 |
break; |
914 |
|
915 |
case '"': |
916 |
if (yyres) |
917 |
yyres[yyn] = '\0'; |
918 |
return yyn; |
919 |
} |
920 |
/* |
921 |
do_not_strip_quotes: ; |
922 |
*/ |
923 |
} |
924 |
|
925 |
if (! yyres) |
926 |
return (int) yystrlen (yystr); |
927 |
|
928 |
return int( yystpcpy (yyres, yystr) - yyres ); |
929 |
} |