/[svn]/linuxsampler/trunk/src/scriptvm/parser.y
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revision 2945 by schoenebeck, Thu Jul 14 00:22:26 2016 UTC revision 3595 by schoenebeck, Tue Sep 3 11:06:33 2019 UTC
# Line 1  Line 1 
1  /*  /*
2   * Copyright (c) 2014-2016 Christian Schoenebeck and Andreas Persson   * Copyright (c) 2014-2017 Christian Schoenebeck and Andreas Persson
3   *   *
4   * http://www.linuxsampler.org   * http://www.linuxsampler.org
5   *   *
# Line 18  Line 18 
18    
19      void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err);      void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err);
20      void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt);      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);      int InstrScript_lex(YYSTYPE* lvalp, YYLTYPE* llocp, void* scanner);
23      #define scanner context->scanner      #define scanner context->scanner
24      #define PARSE_ERR(loc,txt)  yyerror(&loc, context, txt)      #define PARSE_ERR(loc,txt)  yyerror(&loc, context, txt)
25      #define PARSE_WRN(loc,txt)  InstrScript_warning(&loc, context, txt)      #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  // generate reentrant safe parser
# Line 29  Line 32 
32  %parse-param { LinuxSampler::ParserContext* context }  %parse-param { LinuxSampler::ParserContext* context }
33  %lex-param { void* scanner }  %lex-param { void* scanner }
34  // avoid symbol collision with other (i.e. future) auto generated (f)lex scanners  // avoid symbol collision with other (i.e. future) auto generated (f)lex scanners
35  %name-prefix "InstrScript_"  // (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  %locations
38  %defines  %defines
39  %error-verbose  %error-verbose
40    
41  %token <iValue> INTEGER  %token <iValue> INTEGER "integer literal"
42  %token <sValue> STRING  %token <fValue> REAL "real number literal"
43  %token <sValue> IDENTIFIER  %token <iUnitValue> INTEGER_UNIT "integer literal with unit"
44  %token <sValue> VARIABLE  %token <fUnitValue> REAL_UNIT "real number literal with unit"
45  %token ON END INIT NOTE DECLARE ASSIGNMENT WHILE IF OR RELEASE AND ELSE  %token <sValue> STRING "string literal"
46  %token BITWISE_OR BITWISE_AND BITWISE_NOT  %token <sValue> IDENTIFIER "function name"
47  %token CONTROLLER SELECT CASE TO NOT CONST_ POLYPHONIC MOD  %token <sValue> VARIABLE "variable name"
48  %token LE GE  %token ON "keyword 'on'"
49    %token END "keyword 'end'"
50  %type <nEventHandlers> script eventhandlers  %token INIT "keyword 'init'"
51  %type <nEventHandler> eventhandler  %token NOTE "keyword 'note'"
52  %type <nStatements> statements body  %token RELEASE "keyword 'release'"
53    %token CONTROLLER "keyword 'controller'"
54    %token DECLARE "keyword 'declare'"
55    %token ASSIGNMENT "operator ':='"
56    %token CONST_ "keyword 'const'"
57    %token POLYPHONIC "keyword 'polyphonic'"
58    %token WHILE "keyword 'while'"
59    %token SYNCHRONIZED "keyword 'synchronized'"
60    %token IF "keyword 'if'"
61    %token ELSE "keyword 'else'"
62    %token SELECT "keyword 'select'"
63    %token CASE "keyword 'case'"
64    %token TO "keyword 'to'"
65    %token OR "operator 'or'"
66    %token AND "operator 'and'"
67    %token NOT "operator 'not'"
68    %token BITWISE_OR "bitwise operator '.or.'"
69    %token BITWISE_AND "bitwise operator '.and.'"
70    %token BITWISE_NOT "bitwise operator '.not.'"
71    %token FUNCTION "keyword 'function'"
72    %token CALL "keyword 'call'"
73    %token MOD "operator 'mod'"
74    %token LE "operator '<='"
75    %token GE "operator '>='"
76    %token END_OF_FILE 0 "end of file"
77    %token UNKNOWN_CHAR "unknown character"
78    
79    %type <nEventHandlers> script sections
80    %type <nEventHandler> section eventhandler
81    %type <nStatements> statements opt_statements userfunctioncall
82  %type <nStatement> statement assignment  %type <nStatement> statement assignment
83  %type <nFunctionCall> functioncall  %type <nFunctionCall> functioncall
84  %type <nArgs> args  %type <nArgs> args
# Line 58  Line 91 
91  %%  %%
92    
93  script:  script:
94      eventhandlers  {      sections  {
95          $$ = context->handlers = $1;          $$ = context->handlers = $1;
96      }      }
97    
98  eventhandlers:  sections:
99      eventhandler  {      section  {
100          $$ = new EventHandlers();          $$ = new EventHandlers();
101          $$->add($1);          if ($1) $$->add($1);
102        }
103        | sections section  {
104            $$ = $1;
105            if ($2) $$->add($2);
106        }
107    
108    section:
109        function_declaration  {
110            $$ = EventHandlerRef();
111      }      }
112      | eventhandlers eventhandler  {      | eventhandler  {
113          $$ = $1;          $$ = $1;
         $$->add($2);  
114      }      }
115    
116  eventhandler:  eventhandler:
117      ON NOTE body END ON  {      ON NOTE opt_statements END ON  {
118          if (context->onNote)          if (context->onNote)
119              PARSE_ERR(@2, "Redeclaration of 'note' event handler.");              PARSE_ERR(@2, "Redeclaration of 'note' event handler.");
120          context->onNote = new OnNote($3);          context->onNote = new OnNote($3);
121          $$ = context->onNote;          $$ = context->onNote;
122      }      }
123      | ON INIT body END ON  {      | ON INIT opt_statements END ON  {
124          if (context->onInit)          if (context->onInit)
125              PARSE_ERR(@2, "Redeclaration of 'init' event handler.");              PARSE_ERR(@2, "Redeclaration of 'init' event handler.");
126          context->onInit = new OnInit($3);          context->onInit = new OnInit($3);
127          $$ = context->onInit;          $$ = context->onInit;
128      }      }
129      | ON RELEASE body END ON  {      | ON RELEASE opt_statements END ON  {
130          if (context->onRelease)          if (context->onRelease)
131              PARSE_ERR(@2, "Redeclaration of 'release' event handler.");              PARSE_ERR(@2, "Redeclaration of 'release' event handler.");
132          context->onRelease = new OnRelease($3);          context->onRelease = new OnRelease($3);
133          $$ = context->onRelease;          $$ = context->onRelease;
134      }      }
135      | ON CONTROLLER body END ON  {      | ON CONTROLLER opt_statements END ON  {
136          if (context->onController)          if (context->onController)
137              PARSE_ERR(@2, "Redeclaration of 'controller' event handler.");              PARSE_ERR(@2, "Redeclaration of 'controller' event handler.");
138          context->onController = new OnController($3);          context->onController = new OnController($3);
139          $$ = context->onController;          $$ = context->onController;
140      }      }
141    
142  body:  function_declaration:
143        FUNCTION IDENTIFIER opt_statements END FUNCTION  {
144            const char* name = $2;
145            if (context->functionProvider->functionByName(name)) {
146                PARSE_ERR(@2, (String("There is already a built-in function with name '") + name + "'.").c_str());
147            } else if (context->userFunctionByName(name)) {
148                PARSE_ERR(@2, (String("There is already a user defined function with name '") + name + "'.").c_str());
149            } else {
150                context->userFnTable[name] = $3;
151            }
152        }
153    
154    opt_statements:
155      /* epsilon (empty argument) */  {      /* epsilon (empty argument) */  {
156          $$ = new Statements();          $$ = new Statements();
157      }      }
# Line 126  statement: Line 179  statement:
179      functioncall  {      functioncall  {
180          $$ = $1;          $$ = $1;
181      }      }
182        | userfunctioncall  {
183            $$ = $1;
184        }
185      | DECLARE VARIABLE  {      | DECLARE VARIABLE  {
186          const char* name = $2;          const char* name = $2;
187          //printf("declared var '%s'\n", name);          //printf("declared var '%s'\n", name);
188          if (context->variableByName(name))          if (context->variableByName(name)) {
189              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());
190          if (name[0] == '@') {          } else if (name[0] == '@') {
191              context->vartable[name] = new StringVariable(context);              context->vartable[name] = new StringVariable(context);
192              $$ = new NoOperation;          } else if (name[0] == '~') {
193                context->vartable[name] = new RealVariable({
194                    .ctx = context
195                });
196            } else if (name[0] == '$') {
197                context->vartable[name] = new IntVariable({
198                    .ctx = context
199                });
200            } else if (name[0] == '?') {
201                PARSE_ERR(@2, (String("Real number array variable '") + name + "' declaration requires array size.").c_str());
202            } else if (name[0] == '%') {
203                PARSE_ERR(@2, (String("Integer array variable '") + name + "' declaration requires array size.").c_str());
204          } else {          } else {
205              context->vartable[name] = new IntVariable(context);              PARSE_ERR(@2, (String("Variable '") + name + "' declared with unknown type.").c_str());
             $$ = new NoOperation;  
206          }          }
207            $$ = new NoOperation;
208      }      }
209      | DECLARE POLYPHONIC VARIABLE  {      | DECLARE POLYPHONIC VARIABLE  {
210          const char* name = $3;          const char* name = $3;
211          //printf("declared polyphonic var '%s'\n", name);          //printf("declared polyphonic var '%s'\n", name);
212          if (context->variableByName(name))          if (context->variableByName(name)) {
213              PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str());              PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str());
214          if (name[0] != '$') {          } else if (name[0] != '$' && name[0] != '~') {
215              PARSE_ERR(@3, "Polyphonic variables may only be declared as integers.");              PARSE_ERR(@3, "Polyphonic variables must only be declared either as integer or real number type.");
216              $$ = new FunctionCall("nothing", new Args, NULL); // whatever          } else if (name[0] == '~') {
217          } else {              context->vartable[name] = new PolyphonicRealVariable({
218              context->vartable[name] = new PolyphonicIntVariable(context);                  .ctx = context
219              $$ = new NoOperation;              });
220            } else {
221                context->vartable[name] = new PolyphonicIntVariable({
222                    .ctx = context
223                });
224          }          }
225            $$ = new NoOperation;
226      }      }
227      | DECLARE VARIABLE ASSIGNMENT expr  {      | DECLARE VARIABLE ASSIGNMENT expr  {
228          const char* name = $2;          const char* name = $2;
229          //printf("declared assign var '%s'\n", name);          //printf("declared assign var '%s'\n", name);
230          if (context->variableByName(name))          const ExprType_t declType = exprTypeOfVarName(name);
231            if (context->variableByName(name)) {
232              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());
233          if ($4->exprType() == STRING_EXPR) {              $$ = new NoOperation;
234              if (name[0] == '$')          } else if ($4->exprType() == STRING_EXPR) {
235                  PARSE_WRN(@2, (String("Variable '") + name + "' declared as integer, string expression assigned though.").c_str());              if (name[0] != '@')
236                    PARSE_WRN(@2, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", string expression assigned though.").c_str());
237              StringExprRef expr = $4;              StringExprRef expr = $4;
238              if (expr->isConstExpr()) {              if (expr->isConstExpr()) {
239                  const String s = expr->evalStr();                  const String s = expr->evalStr();
# Line 171  statement: Line 245  statement:
245                  context->vartable[name] = var;                  context->vartable[name] = var;
246                  $$ = new Assignment(var, expr);                  $$ = new Assignment(var, expr);
247              }              }
248          } else {          } else if ($4->exprType() == REAL_EXPR) {
249              if (name[0] == '@')              if (name[0] != '~')
250                  PARSE_WRN(@2, (String("Variable '") + name + "' declared as string, integer expression assigned though.").c_str());                  PARSE_WRN(@2, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", real number expression assigned though.").c_str());
251                RealExprRef expr = $4;
252                RealVariableRef var = new RealVariable({
253                    .ctx = context,
254                    .unitType = expr->unitType(),
255                    .isFinal = expr->isFinal()
256                });
257                if (expr->isConstExpr()) {
258                    $$ = new Assignment(var, new RealLiteral({
259                        .value = expr->evalReal(),
260                        .unitFactor = expr->unitFactor(),
261                        .unitType = expr->unitType(),
262                        .isFinal = expr->isFinal()
263                    }));
264                } else {
265                    $$ = new Assignment(var, expr);
266                }
267                context->vartable[name] = var;
268            } else if ($4->exprType() == INT_EXPR) {
269                if (name[0] != '$')
270                    PARSE_WRN(@2, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", integer expression assigned though.").c_str());
271              IntExprRef expr = $4;              IntExprRef expr = $4;
272                IntVariableRef var = new IntVariable({
273                    .ctx = context,
274                    .unitType = expr->unitType(),
275                    .isFinal = expr->isFinal()
276                });
277              if (expr->isConstExpr()) {              if (expr->isConstExpr()) {
278                  const int i = expr->evalInt();                  $$ = new Assignment(var, new IntLiteral({
279                  IntVariableRef var = new IntVariable(context);                      .value = expr->evalInt(),
280                  context->vartable[name] = var;                      .unitFactor = expr->unitFactor(),
281                  $$ = new Assignment(var, new IntLiteral(i));                      .unitType = expr->unitType(),
282                        .isFinal = expr->isFinal()
283                    }));
284              } else {              } else {
                 IntVariableRef var = new IntVariable(context);  
                 context->vartable[name] = var;  
285                  $$ = new Assignment(var, expr);                  $$ = new Assignment(var, expr);
286              }              }
287                context->vartable[name] = var;
288            } else if ($4->exprType() == EMPTY_EXPR) {
289                PARSE_ERR(@4, "Expression does not result in a value.");
290                $$ = new NoOperation;
291            } else if (isArray($4->exprType())) {
292                PARSE_ERR(@2, (String("Variable '") + name + "' declared as scalar type, array expression assigned though.").c_str());
293                $$ = new NoOperation;
294          }          }
295      }      }
296      | DECLARE VARIABLE '[' expr ']'  {      | DECLARE VARIABLE '[' expr ']'  {
# Line 192  statement: Line 298  statement:
298          const char* name = $2;          const char* name = $2;
299          if (!$4->isConstExpr()) {          if (!$4->isConstExpr()) {
300              PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str());              PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
301          } else if ($4->exprType() != INT_EXPR) {          } else if ($4->exprType() != INT_EXPR) {
302              PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str());              PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
303          } else if (context->variableByName(name)) {          } else if (context->variableByName(name)) {
304              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
305          } else {          } else {
306              IntExprRef expr = $4;              IntExprRef sizeExpr = $4;
307              int size = expr->evalInt();              if (sizeExpr->unitType() || sizeExpr->hasUnitFactorNow()) {
308              if (size <= 0) {                  PARSE_ERR(@4, "Units are not allowed as array size.");
                 PARSE_ERR(@4, (String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str());  
                 $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
309              } else {              } else {
310                  context->vartable[name] = new IntArrayVariable(context, size);                  if (sizeExpr->isFinal())
311                  $$ = new NoOperation;                      PARSE_WRN(@4, "Final operator '!' is meaningless here.");
312                    vmint size = sizeExpr->evalInt();
313                    if (size <= 0) {
314                        PARSE_ERR(@4, (String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str());
315                    } else {
316                        if (name[0] == '?') {
317                            context->vartable[name] = new RealArrayVariable(context, size);
318                        } else if (name[0] == '%') {
319                            context->vartable[name] = new IntArrayVariable(context, size);
320                        } else {
321                            PARSE_ERR(@2, (String("Variable '") + name + "' declared as unknown array type: use either '%' or '?' instead of '" + String(name).substr(0,1) + "'.").c_str());
322                        }
323                    }
324              }              }
325          }          }
326            $$ = new NoOperation;
327      }      }
328      | DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')'  {      | DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')'  {
329          const char* name = $2;          const char* name = $2;
330          if (!$4->isConstExpr()) {          if (!$4->isConstExpr()) {
331              PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str());              PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with constant array size.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
332          } else if ($4->exprType() != INT_EXPR) {          } else if ($4->exprType() != INT_EXPR) {
333              PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str());              PARSE_ERR(@4, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
334          } else if (context->variableByName(name)) {          } else if (context->variableByName(name)) {
335              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());              PARSE_ERR(@2, (String("Redeclaration of variable '") + name + "'.").c_str());
             $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
336          } else {          } else {
337              IntExprRef sizeExpr = $4;              IntExprRef sizeExpr = $4;
338              ArgsRef args = $8;              ArgsRef args = $8;
339              int size = sizeExpr->evalInt();              vmint size = sizeExpr->evalInt();
340              if (size <= 0) {              if (size <= 0) {
341                  PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with positive array size.").c_str());                  PARSE_ERR(@4, (String("Array variable '") + name + "' must be declared with positive array size.").c_str());
                 $$ = new FunctionCall("nothing", new Args, NULL); // whatever  
342              } else if (args->argsCount() > size) {              } else if (args->argsCount() > size) {
343                  PARSE_ERR(@8, (String("Variable '") + name +                  PARSE_ERR(@8, (String("Array variable '") + name +
344                              "' was declared with size " + ToString(size) +
345                              " but " + ToString(args->argsCount()) +
346                              " values were assigned." ).c_str());
347                } else if (sizeExpr->unitType() || sizeExpr->hasUnitFactorNow()) {
348                    PARSE_ERR(@4, "Units are not allowed as array size.");
349                } else {
350                    if (sizeExpr->isFinal())
351                        PARSE_WRN(@4, "Final operator '!' is meaningless here.");
352                    ExprType_t declType = EMPTY_EXPR;
353                    if (name[0] == '%') {
354                        declType = INT_EXPR;
355                    } else if (name[0] == '?') {
356                        declType = REAL_EXPR;
357                    } else if (name[0] == '$') {
358                        PARSE_ERR(@2, (String("Variable '") + name + "' declaration ambiguous: Use '%' as name prefix for integer arrays instead of '$'.").c_str());
359                    } else if (name[0] == '~') {
360                        PARSE_ERR(@2, (String("Variable '") + name + "' declaration ambiguous: Use '?' as name prefix for real number arrays instead of '~'.").c_str());
361                    } else {
362                        PARSE_ERR(@2, (String("Variable '") + name + "' declared as unknown array type: use either '%' or '?' instead of '" + String(name).substr(0,1) + "'.").c_str());
363                    }
364                    bool argsOK = true;
365                    if (declType == EMPTY_EXPR) {
366                        argsOK = false;
367                    } else {
368                        for (vmint i = 0; i < args->argsCount(); ++i) {
369                            if (args->arg(i)->exprType() != declType) {
370                                PARSE_ERR(
371                                    @8,
372                                    (String("Array variable '") + name +
373                                    "' declared with invalid assignment values. Assigned element " +
374                                    ToString(i+1) + " is not an " + typeStr(declType) + " expression.").c_str()
375                                );
376                                argsOK = false;
377                                break;
378                            } else if (args->arg(i)->asNumber()->unitType()) {
379                                PARSE_ERR(
380                                    @8,
381                                    (String("Array variable '") + name +
382                                    "' declared with invalid assignment values. Assigned element " +
383                                    ToString(i+1) + " contains a unit type, only metric prefixes are allowed for arrays.").c_str()
384                                );
385                                argsOK = false;
386                                break;
387                            } else if (args->arg(i)->asNumber()->isFinal()) {
388                                PARSE_ERR(
389                                    @8,
390                                    (String("Array variable '") + name +
391                                    "' declared with invalid assignment values. Assigned element " +
392                                    ToString(i+1) + " declared as 'final' value.").c_str()
393                                );
394                                argsOK = false;
395                                break;
396                            }
397                        }
398                    }
399                    if (argsOK) {
400                        if (declType == REAL_EXPR)
401                            context->vartable[name] = new RealArrayVariable(context, size, args);
402                        else
403                            context->vartable[name] = new IntArrayVariable(context, size, args);
404                    }
405                }
406            }
407            $$ = new NoOperation;
408        }
409        | DECLARE CONST_ VARIABLE '[' expr ']' ASSIGNMENT '(' args ')'  {
410            const char* name = $3;
411            if (!$5->isConstExpr()) {
412                PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with constant array size.").c_str());
413            } else if ($5->exprType() != INT_EXPR) {
414                PARSE_ERR(@5, (String("Size of array variable '") + name + "' declared with non integer expression.").c_str());
415            } else if (context->variableByName(name)) {
416                PARSE_ERR(@3, (String("Redeclaration of variable '") + name + "'.").c_str());
417            } else {
418                IntExprRef sizeExpr = $5;
419                ArgsRef args = $9;
420                vmint size = sizeExpr->evalInt();
421                if (size <= 0) {
422                    PARSE_ERR(@5, (String("Array variable '") + name + "' must be declared with positive array size.").c_str());
423                } else if (args->argsCount() > size) {
424                    PARSE_ERR(@9, (String("Array variable '") + name +
425                            "' was declared with size " + ToString(size) +                            "' was declared with size " + ToString(size) +
426                            " but " + ToString(args->argsCount()) +                            " but " + ToString(args->argsCount()) +
427                            " values were assigned." ).c_str());                            " values were assigned." ).c_str());
428                  $$ = new FunctionCall("nothing", new Args, NULL); // whatever                        } else if (sizeExpr->unitType() || sizeExpr->hasUnitFactorNow()) {
429                    PARSE_ERR(@5, "Units are not allowed as array size.");
430              } else {              } else {
431                    if (sizeExpr->isFinal())
432                        PARSE_WRN(@5, "Final operator '!' is meaningless here.");
433                    ExprType_t declType = EMPTY_EXPR;
434                    if (name[0] == '%') {
435                        declType = INT_EXPR;
436                    } else if (name[0] == '?') {
437                        declType = REAL_EXPR;
438                    } else if (name[0] == '$') {
439                        PARSE_ERR(@3, (String("Variable '") + name + "' declaration ambiguous: Use '%' as name prefix for integer arrays instead of '$'.").c_str());
440                    } else if (name[0] == '~') {
441                        PARSE_ERR(@3, (String("Variable '") + name + "' declaration ambiguous: Use '?' as name prefix for real number arrays instead of '~'.").c_str());
442                    } else {
443                        PARSE_ERR(@3, (String("Variable '") + name + "' declared as unknown array type: use either '%' or '?' instead of '" + String(name).substr(0,1) + "'.").c_str());
444                    }
445                  bool argsOK = true;                  bool argsOK = true;
446                  for (int i = 0; i < args->argsCount(); ++i) {                  if (declType == EMPTY_EXPR) {
447                      if (args->arg(i)->exprType() != INT_EXPR) {                      argsOK = false;
448                          PARSE_ERR(                  } else {
449                              @8,                      for (vmint i = 0; i < args->argsCount(); ++i) {
450                              (String("Array variable '") + name +                          if (args->arg(i)->exprType() != declType) {
451                              "' declared with invalid assignment values. Assigned element " +                              PARSE_ERR(
452                              ToString(i+1) + " is not an integer expression.").c_str()                                  @9,
453                          );                                  (String("const array variable '") + name +
454                          argsOK = false;                                  "' declared with invalid assignment values. Assigned element " +
455                          break;                                  ToString(i+1) + " is not an " + typeStr(declType) + " expression.").c_str()
456                                );
457                                argsOK = false;
458                                break;
459                            }
460                            if (!args->arg(i)->isConstExpr()) {
461                                PARSE_ERR(
462                                    @9,
463                                    (String("const array variable '") + name +
464                                    "' must be defined with const values. Assigned element " +
465                                    ToString(i+1) + " is not a const expression though.").c_str()
466                                );
467                                argsOK = false;
468                                break;
469                            } else if (args->arg(i)->asNumber()->unitType()) {
470                                PARSE_ERR(
471                                    @9,
472                                    (String("const array variable '") + name +
473                                    "' declared with invalid assignment values. Assigned element " +
474                                    ToString(i+1) + " contains a unit type, only metric prefixes are allowed for arrays.").c_str()
475                                );
476                                argsOK = false;
477                                break;
478                            } else if (args->arg(i)->asNumber()->isFinal()) {
479                                PARSE_ERR(
480                                    @9,
481                                    (String("const array variable '") + name +
482                                    "' declared with invalid assignment values. Assigned element " +
483                                    ToString(i+1) + " declared as 'final' value.").c_str()
484                                );
485                                argsOK = false;
486                                break;
487                            }
488                      }                      }
489                  }                  }
490                  if (argsOK)                  if (argsOK) {
491                      $$ = context->vartable[name] = new IntArrayVariable(context, size, args);                      if (declType == REAL_EXPR)
492                  else                          context->vartable[name] = new RealArrayVariable(context, size, args, true);
493                      $$ = new FunctionCall("nothing", new Args, NULL); // whatever                      else
494                            context->vartable[name] = new IntArrayVariable(context, size, args, true);
495                    }
496              }              }
497          }          }
498            $$ = new NoOperation;
499      }      }
500      | DECLARE CONST_ VARIABLE ASSIGNMENT expr  {      | DECLARE CONST_ VARIABLE ASSIGNMENT expr  {
501          const char* name = $3;          const char* name = $3;
502            const ExprType_t declType = exprTypeOfVarName(name);
503          if ($5->exprType() == STRING_EXPR) {          if ($5->exprType() == STRING_EXPR) {
504              if (name[0] == '$')              if (name[0] != '@')
505                  PARSE_WRN(@5, "Variable declared as integer, string expression assigned though.");                  PARSE_WRN(@5, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", string expression assigned though.").c_str());
506              String s;              String s;
507              StringExprRef expr = $5;              StringExprRef expr = $5;
508              if (expr->isConstExpr())              if (expr->isConstExpr())
# Line 270  statement: Line 512  statement:
512              ConstStringVariableRef var = new ConstStringVariable(context, s);              ConstStringVariableRef var = new ConstStringVariable(context, s);
513              context->vartable[name] = var;              context->vartable[name] = var;
514              //$$ = new Assignment(var, new StringLiteral(s));              //$$ = new Assignment(var, new StringLiteral(s));
515              $$ = new NoOperation();          } else if ($5->exprType() == REAL_EXPR) {
516          } else {              if (name[0] != '~')
517              if (name[0] == '@')                  PARSE_WRN(@5, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", real number expression assigned though.").c_str());
518                  PARSE_WRN(@5, "Variable declared as string, integer expression assigned though.");              RealExprRef expr = $5;
519              int i = 0;              if (!expr->isConstExpr()) {
520                    PARSE_ERR(@5, (String("Assignment to const real number variable '") + name + "' requires const expression.").c_str());
521                }
522                ConstRealVariableRef var = new ConstRealVariable(
523                    #if defined(__GNUC__) && !defined(__clang__)
524                    (const RealVarDef&) // GCC 8.x requires this cast here (looks like a GCC bug to me); cast would cause an error with clang though
525                    #endif
526                {
527                    .value = (expr->isConstExpr()) ? expr->evalReal() : vmfloat(0),
528                    .unitFactor = (expr->isConstExpr()) ? expr->unitFactor() : VM_NO_FACTOR,
529                    .unitType = expr->unitType(),
530                    .isFinal = expr->isFinal()
531                });
532                context->vartable[name] = var;
533                //$$ = new Assignment(var, new IntLiteral(i));
534            } else if ($5->exprType() == INT_EXPR) {
535                if (name[0] != '$')
536                    PARSE_WRN(@5, (String("Variable '") + name + "' declared as " + typeStr(declType) + ", integer expression assigned though.").c_str());
537              IntExprRef expr = $5;              IntExprRef expr = $5;
538              if (expr->isConstExpr())              if (!expr->isConstExpr()) {
                 i = expr->evalInt();  
             else  
539                  PARSE_ERR(@5, (String("Assignment to const integer variable '") + name + "' requires const expression.").c_str());                  PARSE_ERR(@5, (String("Assignment to const integer variable '") + name + "' requires const expression.").c_str());
540              ConstIntVariableRef var = new ConstIntVariable(i);              }
541                ConstIntVariableRef var = new ConstIntVariable(
542                    #if defined(__GNUC__) && !defined(__clang__)
543                    (const IntVarDef&) // GCC 8.x requires this cast here (looks like a GCC bug to me); cast would cause an error with clang though
544                    #endif
545                {
546                    .value = (expr->isConstExpr()) ? expr->evalInt() : 0,
547                    .unitFactor = (expr->isConstExpr()) ? expr->unitFactor() : VM_NO_FACTOR,
548                    .unitType = expr->unitType(),
549                    .isFinal = expr->isFinal()
550                });
551              context->vartable[name] = var;              context->vartable[name] = var;
552              //$$ = new Assignment(var, new IntLiteral(i));              //$$ = new Assignment(var, new IntLiteral(i));
553              $$ = new NoOperation();          } else if ($5->exprType() == EMPTY_EXPR) {
554                PARSE_ERR(@5, "Expression does not result in a value.");
555            } else if (isArray($5->exprType())) {
556                PARSE_ERR(@5, (String("Variable '") + name + "' declared as scalar type, array expression assigned though.").c_str());
557          }          }
558            $$ = new NoOperation();
559      }      }
560      | assignment  {      | assignment  {
561          $$ = $1;          $$ = $1;
562      }      }
563      | WHILE '(' expr ')' statements END WHILE  {      | WHILE '(' expr ')' opt_statements END WHILE  {
564          if ($3->exprType() == INT_EXPR) {          if ($3->exprType() == INT_EXPR) {
565              $$ = new While($3, $5);              IntExprRef expr = $3;
566                if (expr->asNumber()->unitType() ||
567                    expr->asNumber()->hasUnitFactorEver())
568                    PARSE_WRN(@3, "Condition for 'while' loops contains a unit.");
569                else if (expr->isFinal() && expr->isConstExpr())
570                    PARSE_WRN(@3, "Final operator '!' is meaningless here.");
571                $$ = new While(expr, $5);
572          } else {          } else {
573              PARSE_ERR(@3, "Condition for 'while' loops must be integer expression.");              PARSE_ERR(@3, "Condition for 'while' loops must be integer expression.");
574              $$ = new While(new IntLiteral(0), $5);              $$ = new While(new IntLiteral({ .value = 0 }), $5);
575          }          }
576      }      }
577      | IF '(' expr ')' statements ELSE statements END IF  {      | SYNCHRONIZED opt_statements END SYNCHRONIZED  {
578          $$ = new If($3, $5, $7);          $$ = new SyncBlock($2);
579        }
580        | IF '(' expr ')' opt_statements ELSE opt_statements END IF  {
581            if ($3->exprType() == INT_EXPR) {
582                IntExprRef expr = $3;
583                if (expr->asNumber()->unitType() ||
584                    expr->asNumber()->hasUnitFactorEver())
585                    PARSE_WRN(@3, "Condition for 'if' contains a unit.");
586                else if (expr->isFinal() && expr->isConstExpr())
587                    PARSE_WRN(@3, "Final operator '!' is meaningless here.");
588                $$ = new If($3, $5, $7);
589            } else {
590                PARSE_ERR(@3, "Condition for 'if' must be integer expression.");
591                $$ = new If(new IntLiteral({ .value = 0 }), $5, $7);
592            }
593      }      }
594      | IF '(' expr ')' statements END IF  {      | IF '(' expr ')' opt_statements END IF  {
595          $$ = new If($3, $5);          if ($3->exprType() == INT_EXPR) {
596                IntExprRef expr = $3;
597                if (expr->asNumber()->unitType() ||
598                    expr->asNumber()->hasUnitFactorEver())
599                    PARSE_WRN(@3, "Condition for 'if' contains a unit.");
600                else if (expr->isFinal() && expr->isConstExpr())
601                    PARSE_WRN(@3, "Final operator '!' is meaningless here.");
602                $$ = new If($3, $5);
603            } else {
604                PARSE_ERR(@3, "Condition for 'if' must be integer expression.");
605                $$ = new If(new IntLiteral({ .value = 0 }), $5);
606            }
607      }      }
608      | SELECT expr caseclauses END SELECT  {      | SELECT expr caseclauses END SELECT  {
609          if ($2->exprType() == INT_EXPR) {          if ($2->exprType() == INT_EXPR) {
610              $$ = new SelectCase($2, $3);              IntExprRef expr = $2;
611                if (expr->unitType() || expr->hasUnitFactorEver()) {
612                    PARSE_ERR(@2, "Units are not allowed here.");
613                    $$ = new SelectCase(new IntLiteral({ .value = 0 }), $3);
614                } else {
615                    if (expr->isFinal() && expr->isConstExpr())
616                        PARSE_WRN(@2, "Final operator '!' is meaningless here.");
617                    $$ = new SelectCase(expr, $3);
618                }
619          } else {          } else {
620              PARSE_ERR(@2, "Statement 'select' can only by applied to integer expressions.");              PARSE_ERR(@2, "Statement 'select' can only by applied to integer expressions.");
621              $$ = new SelectCase(new IntLiteral(0), $3);              $$ = new SelectCase(new IntLiteral({ .value = 0 }), $3);
622          }          }
623      }      }
624    
# Line 323  caseclauses: Line 633  caseclauses:
633      }      }
634    
635  caseclause:  caseclause:
636      CASE INTEGER statements  {      CASE INTEGER opt_statements  {
637          $$ = CaseBranch();          $$ = CaseBranch();
638          $$.from = new IntLiteral($2);          $$.from = new IntLiteral({ .value = $2 });
639          $$.statements = $3;          $$.statements = $3;
640      }      }
641      | CASE INTEGER TO INTEGER statements  {      | CASE INTEGER TO INTEGER opt_statements  {
642          $$ = CaseBranch();          $$ = CaseBranch();
643          $$.from = new IntLiteral($2);          $$.from = new IntLiteral({ .value = $2 });
644          $$.to   = new IntLiteral($4);          $$.to   = new IntLiteral({ .value = $4 });
645          $$.statements = $5;          $$.statements = $5;
646      }      }
647    
648    userfunctioncall:
649        CALL IDENTIFIER  {
650            const char* name = $2;
651            StatementsRef fn = context->userFunctionByName(name);
652            if (context->functionProvider->functionByName(name)) {
653                PARSE_ERR(@1, (String("Keyword 'call' must only be used for user defined functions, not for any built-in function like '") + name + "'.").c_str());
654                $$ = StatementsRef();
655            } else if (!fn) {
656                PARSE_ERR(@2, (String("No user defined function with name '") + name + "'.").c_str());
657                $$ = StatementsRef();
658            } else {
659                $$ = fn;
660            }
661        }
662    
663  functioncall:  functioncall:
664      IDENTIFIER '(' args ')'  {      IDENTIFIER '(' args ')'  {
665          const char* name = $1;          const char* name = $1;
666          //printf("function call of '%s' with args\n", name);          //printf("function call of '%s' with args\n", name);
667          ArgsRef args = $3;          ArgsRef args = $3;
668          VMFunction* fn = context->functionProvider->functionByName(name);          VMFunction* fn = context->functionProvider->functionByName(name);
669          if (!fn) {          if (context->userFunctionByName(name)) {
670                PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str());
671                $$ = new FunctionCall(name, args, NULL);
672            } else if (!fn) {
673              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());
674              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
675            } else if (context->functionProvider->isFunctionDisabled(fn,context)) {
676                PARSE_DROP(@$);
677                $$ = new NoFunctionCall;
678          } else if (args->argsCount() < fn->minRequiredArgs()) {          } else if (args->argsCount() < fn->minRequiredArgs()) {
679              PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());              PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());
680              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
# Line 352  functioncall: Line 683  functioncall:
683              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
684          } else {          } else {
685              bool argsOK = true;              bool argsOK = true;
686              for (int i = 0; i < args->argsCount(); ++i) {              for (vmint i = 0; i < args->argsCount(); ++i) {
687                  if (args->arg(i)->exprType() != fn->argType(i) && !fn->acceptsArgType(i, args->arg(i)->exprType())) {                  if (!fn->acceptsArgType(i, args->arg(i)->exprType())) {
688                      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());                      PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects " + acceptedArgTypesStr(fn, i) + " type, but type " + typeStr(args->arg(i)->exprType()) + " was given instead.").c_str());
689                      argsOK = false;                      argsOK = false;
690                      break;                      break;
691                  } else if (fn->modifiesArg(i) && !args->arg(i)->isModifyable()) {                  } else if (fn->modifiesArg(i) && !args->arg(i)->isModifyable()) {
692                      PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects an assignable variable.").c_str());                      PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects an assignable variable.").c_str());
693                      argsOK = false;                      argsOK = false;
694                      break;                      break;
695                    } else if (isNumber(args->arg(i)->exprType()) && !fn->acceptsArgUnitType(i, args->arg(i)->asNumber()->unitType())) {
696                        if (args->arg(i)->asNumber()->unitType())
697                            PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' does not expect unit " + unitTypeStr(args->arg(i)->asNumber()->unitType()) +  ".").c_str());
698                        else
699                            PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects a unit.").c_str());
700                        argsOK = false;
701                        break;
702                    } else if (isNumber(args->arg(i)->exprType()) && args->arg(i)->asNumber()->hasUnitFactorEver() && !fn->acceptsArgUnitPrefix(i, args->arg(i)->asNumber()->unitType())) {
703                        if (args->arg(i)->asNumber()->unitType())
704                            PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' does not expect a unit prefix for unit" + unitTypeStr(args->arg(i)->asNumber()->unitType()) + ".").c_str());
705                        else
706                            PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' does not expect a unit prefix.").c_str());
707                        argsOK = false;
708                        break;
709                    } else if (!fn->acceptsArgFinal(i) && isNumber(args->arg(i)->exprType()) && args->arg(i)->asNumber()->isFinal()) {
710                        PARSE_ERR(@3, (String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' does not expect a \"final\" value.").c_str());
711                        argsOK = false;
712                        break;
713                  }                  }
714              }              }
715                if (argsOK) {
716                    // perform built-in function's own, custom arguments checks (if any)
717                    fn->checkArgs(&*args, [&](String err) {
718                        PARSE_ERR(@3, (String("Built-in function '") + name + "()': " + err).c_str());
719                        argsOK = false;
720                    }, [&](String wrn) {
721                        PARSE_WRN(@3, (String("Built-in function '") + name + "()': " + wrn).c_str());
722                    });
723                }
724              $$ = new FunctionCall(name, args, argsOK ? fn : NULL);              $$ = new FunctionCall(name, args, argsOK ? fn : NULL);
725          }          }
726      }      }
# Line 371  functioncall: Line 729  functioncall:
729          //printf("function call of '%s' (with empty args)\n", name);          //printf("function call of '%s' (with empty args)\n", name);
730          ArgsRef args = new Args;          ArgsRef args = new Args;
731          VMFunction* fn = context->functionProvider->functionByName(name);          VMFunction* fn = context->functionProvider->functionByName(name);
732          if (!fn) {          if (context->userFunctionByName(name)) {
733                PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str());
734                $$ = new FunctionCall(name, args, NULL);
735            } else if (!fn) {
736              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());
737              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
738            } else if (context->functionProvider->isFunctionDisabled(fn,context)) {
739                PARSE_DROP(@$);
740                $$ = new NoFunctionCall;
741          } else if (fn->minRequiredArgs() > 0) {          } else if (fn->minRequiredArgs() > 0) {
742              PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());              PARSE_ERR(@3, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());
743              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
# Line 386  functioncall: Line 750  functioncall:
750          //printf("function call of '%s' (without args)\n", name);          //printf("function call of '%s' (without args)\n", name);
751          ArgsRef args = new Args;          ArgsRef args = new Args;
752          VMFunction* fn = context->functionProvider->functionByName(name);          VMFunction* fn = context->functionProvider->functionByName(name);
753          if (!fn) {          if (context->userFunctionByName(name)) {
754                PARSE_ERR(@1, (String("Missing 'call' keyword before user defined function name '") + name + "'.").c_str());
755                $$ = new FunctionCall(name, args, NULL);
756            } else if (!fn) {
757              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());              PARSE_ERR(@1, (String("No built-in function with name '") + name + "'.").c_str());
758              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
759            } else if (context->functionProvider->isFunctionDisabled(fn,context)) {
760                PARSE_DROP(@$);
761                $$ = new NoFunctionCall;
762          } else if (fn->minRequiredArgs() > 0) {          } else if (fn->minRequiredArgs() > 0) {
763              PARSE_ERR(@1, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());              PARSE_ERR(@1, (String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str());
764              $$ = new FunctionCall(name, args, NULL);              $$ = new FunctionCall(name, args, NULL);
# Line 423  assignment: Line 793  assignment:
793              PARSE_ERR(@2, (String("Variable assignment: Variable '") + name + "' is not assignable.").c_str());              PARSE_ERR(@2, (String("Variable assignment: Variable '") + name + "' is not assignable.").c_str());
794          else if (var->exprType() != $3->exprType())          else if (var->exprType() != $3->exprType())
795              PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str());
796            else if (isNumber(var->exprType())) {
797                NumberVariableRef numberVar = var;
798                NumberExprRef expr = $3;
799                if (numberVar->unitType() != expr->unitType())
800                    PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' has unit type " + unitTypeStr(numberVar->unitType()) + ", assignment has unit type " + unitTypeStr(expr->unitType()) + " though.").c_str());
801                else if (numberVar->isFinal() != expr->isFinal())
802                    PARSE_ERR(@3, (String("Variable assignment: Variable '") + name + "' was declared as " + String(numberVar->isFinal() ? "final" : "not final") + ", assignment is " + String(expr->isFinal() ? "final" : "not final") + " though.").c_str());
803            }
804          $$ = new Assignment(var, $3);          $$ = new Assignment(var, $3);
805      }      }
806      | VARIABLE '[' expr ']' ASSIGNMENT expr  {      | VARIABLE '[' expr ']' ASSIGNMENT expr  {
# Line 430  assignment: Line 808  assignment:
808          VariableRef var = context->variableByName(name);          VariableRef var = context->variableByName(name);
809          if (!var)          if (!var)
810              PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str());              PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str());
811          else if (var->exprType() != INT_ARR_EXPR)          else if (!isArray(var->exprType()))
812              PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str());              PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str());
813            else if (var->isConstExpr())
814                PARSE_ERR(@5, (String("Variable assignment: Cannot modify const array variable '") + name + "'.").c_str());
815            else if (!var->isAssignable())
816                PARSE_ERR(@5, (String("Variable assignment: Array variable '") + name + "' is not assignable.").c_str());
817          else if ($3->exprType() != INT_EXPR)          else if ($3->exprType() != INT_EXPR)
818              PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str());              PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str());
819          else if ($6->exprType() != INT_EXPR)          else if ($3->asInt()->unitType())
820              PARSE_ERR(@5, (String("Value assigned to array variable '") + name + "' must be an integer expression.").c_str());              PARSE_ERR(@3, "Unit types are not allowed as array index.");
821          IntArrayElementRef element = new IntArrayElement(var, $3);          else if ($6->exprType() != scalarTypeOfArray(var->exprType()))
822          $$ = new Assignment(element, $6);              PARSE_ERR(@5, (String("Variable '") + name + "' was declared as " + typeStr(var->exprType()) + ", assigned expression is " + typeStr($6->exprType()) + " though.").c_str());
823            else if ($6->asNumber()->unitType())
824                PARSE_ERR(@6, "Unit types are not allowed for array variables.");
825            else if ($6->asNumber()->isFinal())
826                PARSE_ERR(@6, "Final operator '!' not allowed for array variables.");
827            else if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((ArrayExprRef)var)->arraySize())
828                PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) +
829                              " exceeds size of array variable '" + name +
830                              "' which was declared with size " +
831                              ToString(((ArrayExprRef)var)->arraySize()) + ".").c_str());
832            else if ($3->asInt()->isFinal())
833                PARSE_WRN(@3, "Final operator '!' is meaningless here.");
834            if (var->exprType() == INT_ARR_EXPR) {
835                IntArrayElementRef element = new IntArrayElement(var, $3);
836                $$ = new Assignment(element, $6);
837            } else if (var->exprType() == REAL_ARR_EXPR) {
838                RealArrayElementRef element = new RealArrayElement(var, $3);
839                $$ = new Assignment(element, $6);
840            } else {
841                $$ = new NoOperation; // actually not possible to ever get here
842            }
843      }      }
844    
845  unary_expr:  unary_expr:
846      INTEGER  {      INTEGER  {
847          $$ = new IntLiteral($1);          $$ = new IntLiteral({ .value = $1 });
848        }
849        | REAL  {
850            $$ = new RealLiteral({ .value = $1 });
851        }
852        | INTEGER_UNIT  {
853            IntLiteralRef literal = new IntLiteral({
854                .value = $1.iValue,
855                .unitFactor = VMUnit::unitFactor($1.prefix),
856                .unitType = $1.unit
857            });
858            $$ = literal;
859        }
860        | REAL_UNIT  {
861            RealLiteralRef literal = new RealLiteral({
862                .value = $1.fValue,
863                .unitFactor = VMUnit::unitFactor($1.prefix),
864                .unitType = $1.unit
865            });
866            $$ = literal;
867      }      }
868      | STRING    {      | STRING    {
869          $$ = new StringLiteral($1);          $$ = new StringLiteral($1);
# Line 454  unary_expr: Line 875  unary_expr:
875              $$ = var;              $$ = var;
876          else {          else {
877              PARSE_ERR(@1, (String("No variable declared with name '") + $1 + "'.").c_str());              PARSE_ERR(@1, (String("No variable declared with name '") + $1 + "'.").c_str());
878              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
879          }          }
880      }      }
881      | VARIABLE '[' expr ']'  {      | VARIABLE '[' expr ']'  {
# Line 462  unary_expr: Line 883  unary_expr:
883          VariableRef var = context->variableByName(name);          VariableRef var = context->variableByName(name);
884          if (!var) {          if (!var) {
885              PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str());              PARSE_ERR(@1, (String("No variable declared with name '") + name + "'.").c_str());
886              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
887          } else if (var->exprType() != INT_ARR_EXPR) {          } else if (!isArray(var->exprType())) {
888              PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str());              PARSE_ERR(@2, (String("Variable '") + name + "' is not an array variable.").c_str());
889              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
890          } else if ($3->exprType() != INT_EXPR) {          } else if ($3->exprType() != INT_EXPR) {
891              PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str());              PARSE_ERR(@3, (String("Array variable '") + name + "' accessed with non integer expression.").c_str());
892              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
893          } else {          } else if ($3->asInt()->unitType() || $3->asInt()->hasUnitFactorEver()) {
894              $$ = new IntArrayElement(var, $3);              PARSE_ERR(@3, "Units are not allowed as array index.");
895                $$ = new IntLiteral({ .value = 0 });
896            } else {
897                if ($3->isConstExpr() && $3->asInt()->evalInt() >= ((ArrayExprRef)var)->arraySize())
898                    PARSE_WRN(@3, (String("Index ") + ToString($3->asInt()->evalInt()) +
899                                   " exceeds size of array variable '" + name +
900                                   "' which was declared with size " +
901                                   ToString(((ArrayExprRef)var)->arraySize()) + ".").c_str());
902                else if ($3->asInt()->isFinal())
903                    PARSE_WRN(@3, "Final operator '!' is meaningless here.");
904                if (var->exprType() == REAL_ARR_EXPR) {
905                    $$ = new RealArrayElement(var, $3);
906                } else {
907                    $$ = new IntArrayElement(var, $3);
908                }
909          }          }
910      }      }
911      | '(' expr ')'  {      | '(' expr ')'  {
# Line 479  unary_expr: Line 914  unary_expr:
914      | functioncall  {      | functioncall  {
915          $$ = $1;          $$ = $1;
916      }      }
917        | '+' unary_expr  {
918            $$ = $2;
919        }
920      | '-' unary_expr  {      | '-' unary_expr  {
921          $$ = new Neg($2);          $$ = new Neg($2);
922      }      }
923      | BITWISE_NOT unary_expr  {      | BITWISE_NOT unary_expr  {
924          if ($2->exprType() != INT_EXPR) {          if ($2->exprType() != INT_EXPR) {
925              PARSE_ERR(@2, (String("Right operand of bitwise operator '.not.' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str());              PARSE_ERR(@2, (String("Right operand of bitwise operator '.not.' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str());
926              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
927            } else if ($2->asInt()->unitType() || $2->asInt()->hasUnitFactorEver()) {
928                PARSE_ERR(@2, "Units are not allowed for operands of bitwise operations.");
929                $$ = new IntLiteral({ .value = 0 });
930          } else {          } else {
931              $$ = new BitwiseNot($2);              $$ = new BitwiseNot($2);
932          }          }
# Line 493  unary_expr: Line 934  unary_expr:
934      | NOT unary_expr  {      | NOT unary_expr  {
935          if ($2->exprType() != INT_EXPR) {          if ($2->exprType() != INT_EXPR) {
936              PARSE_ERR(@2, (String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str());              PARSE_ERR(@2, (String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str());
937              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
938            } else if ($2->asInt()->unitType() || $2->asInt()->hasUnitFactorEver()) {
939                PARSE_ERR(@2, "Units are not allowed for operands of logical operations.");
940                $$ = new IntLiteral({ .value = 0 });
941          } else {          } else {
942              $$ = new Not($2);              $$ = new Not($2);
943          }          }
944      }      }
945        | '!' unary_expr  {
946            if (!isNumber($2->exprType())) {
947                PARSE_ERR(@2, (String("Right operand of \"final\" operator '!' must be a scalar number expression, is ") + typeStr($2->exprType()) + " though.").c_str());
948                $$ = new IntLiteral({ .value = 0 });
949            } else {
950                $$ = new Final($2);
951            }
952        }
953    
954  expr:  expr:
955      concat_expr      concat_expr
# Line 523  logical_or_expr: Line 975  logical_or_expr:
975          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
976          if (lhs->exprType() != INT_EXPR) {          if (lhs->exprType() != INT_EXPR) {
977              PARSE_ERR(@1, (String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
978              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
979          } else if (rhs->exprType() != INT_EXPR) {          } else if (rhs->exprType() != INT_EXPR) {
980              PARSE_ERR(@3, (String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
981              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
982          } else {          } else if (lhs->asInt()->unitType() || lhs->asInt()->hasUnitFactorEver()) {
983                PARSE_ERR(@1, "Units are not allowed for operands of logical operations.");
984                $$ = new IntLiteral({ .value = 0 });
985            } else if (rhs->asInt()->unitType() || rhs->asInt()->hasUnitFactorEver()) {
986                PARSE_ERR(@3, "Units are not allowed for operands of logical operations.");
987                $$ = new IntLiteral({ .value = 0 });
988            } else {
989                if (lhs->asInt()->isFinal() && !rhs->asInt()->isFinal())
990                    PARSE_WRN(@3, "Right operand of 'or' operation is not 'final', result will be 'final' though since left operand is 'final'.");
991                else if (!lhs->asInt()->isFinal() && rhs->asInt()->isFinal())
992                    PARSE_WRN(@1, "Left operand of 'or' operation is not 'final', result will be 'final' though since right operand is 'final'.");
993              $$ = new Or(lhs, rhs);              $$ = new Or(lhs, rhs);
994          }          }
995      }      }
# Line 541  logical_and_expr: Line 1003  logical_and_expr:
1003          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1004          if (lhs->exprType() != INT_EXPR) {          if (lhs->exprType() != INT_EXPR) {
1005              PARSE_ERR(@1, (String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1006              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1007          } else if (rhs->exprType() != INT_EXPR) {          } else if (rhs->exprType() != INT_EXPR) {
1008              PARSE_ERR(@3, (String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1009              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1010          } else {          } else if (lhs->asInt()->unitType() || lhs->asInt()->hasUnitFactorEver()) {
1011                PARSE_ERR(@1, "Units are not allowed for operands of logical operations.");
1012                $$ = new IntLiteral({ .value = 0 });
1013            } else if (rhs->asInt()->unitType() || rhs->asInt()->hasUnitFactorEver()) {
1014                PARSE_ERR(@3, "Units are not allowed for operands of logical operations.");
1015                $$ = new IntLiteral({ .value = 0 });
1016            } else {
1017                if (lhs->asInt()->isFinal() && !rhs->asInt()->isFinal())
1018                    PARSE_WRN(@3, "Right operand of 'and' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1019                else if (!lhs->asInt()->isFinal() && rhs->asInt()->isFinal())
1020                    PARSE_WRN(@1, "Left operand of 'and' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1021              $$ = new And(lhs, rhs);              $$ = new And(lhs, rhs);
1022          }          }
1023      }      }
# Line 557  bitwise_or_expr: Line 1029  bitwise_or_expr:
1029          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1030          if (lhs->exprType() != INT_EXPR) {          if (lhs->exprType() != INT_EXPR) {
1031              PARSE_ERR(@1, (String("Left operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1032              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1033          } else if (rhs->exprType() != INT_EXPR) {          } else if (rhs->exprType() != INT_EXPR) {
1034              PARSE_ERR(@3, (String("Right operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of bitwise operator '.or.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1035              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1036          } else {          } else if (lhs->asInt()->unitType() || lhs->asInt()->hasUnitFactorEver()) {
1037                PARSE_ERR(@1, "Units are not allowed for operands of bitwise operations.");
1038                $$ = new IntLiteral({ .value = 0 });
1039            } else if (rhs->asInt()->unitType() || rhs->asInt()->hasUnitFactorEver()) {
1040                PARSE_ERR(@3, "Units are not allowed for operands of bitwise operations.");
1041                $$ = new IntLiteral({ .value = 0 });
1042            } else {
1043                if (lhs->asInt()->isFinal() && !rhs->asInt()->isFinal())
1044                    PARSE_WRN(@3, "Right operand of '.or.' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1045                else if (!lhs->asInt()->isFinal() && rhs->asInt()->isFinal())
1046                    PARSE_WRN(@1, "Left operand of '.or.' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1047              $$ = new BitwiseOr(lhs, rhs);              $$ = new BitwiseOr(lhs, rhs);
1048          }          }
1049      }      }
# Line 575  bitwise_and_expr: Line 1057  bitwise_and_expr:
1057          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1058          if (lhs->exprType() != INT_EXPR) {          if (lhs->exprType() != INT_EXPR) {
1059              PARSE_ERR(@1, (String("Left operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1060              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1061          } else if (rhs->exprType() != INT_EXPR) {          } else if (rhs->exprType() != INT_EXPR) {
1062              PARSE_ERR(@3, (String("Right operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of bitwise operator '.and.' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1063              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1064          } else {          } else if (lhs->asInt()->unitType() || lhs->asInt()->hasUnitFactorEver()) {
1065                PARSE_ERR(@1, "Units are not allowed for operands of bitwise operations.");
1066                $$ = new IntLiteral({ .value = 0 });
1067            } else if (rhs->asInt()->unitType() || rhs->asInt()->hasUnitFactorEver()) {
1068                PARSE_ERR(@3, "Units are not allowed for operands of bitwise operations.");
1069                $$ = new IntLiteral({ .value = 0 });
1070            } else {
1071                if (lhs->asInt()->isFinal() && !rhs->asInt()->isFinal())
1072                    PARSE_WRN(@3, "Right operand of '.and.' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1073                else if (!lhs->asInt()->isFinal() && rhs->asInt()->isFinal())
1074                    PARSE_WRN(@1, "Left operand of '.and.' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1075              $$ = new BitwiseAnd(lhs, rhs);              $$ = new BitwiseAnd(lhs, rhs);
1076          }          }
1077      }      }
# Line 589  rel_expr: Line 1081  rel_expr:
1081      | rel_expr '<' add_expr  {      | rel_expr '<' add_expr  {
1082          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1083          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1084          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1085              PARSE_ERR(@1, (String("Left operand of operator '<' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '<' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1086              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1087          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1088              PARSE_ERR(@3, (String("Right operand of operator '<' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator '<' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1089              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1090          } else {          } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1091                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1092                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1093                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1094                $$ = new IntLiteral({ .value = 0 });
1095            } else {
1096                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1097                    PARSE_WRN(@3, "Right operand of '<' comparison is not 'final', left operand is 'final' though.");
1098                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1099                    PARSE_WRN(@1, "Left operand of '<' comparison is not 'final', right operand is 'final' though.");
1100              $$ = new Relation(lhs, Relation::LESS_THAN, rhs);              $$ = new Relation(lhs, Relation::LESS_THAN, rhs);
1101          }          }
1102      }      }
1103      | rel_expr '>' add_expr  {      | rel_expr '>' add_expr  {
1104          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1105          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1106          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1107              PARSE_ERR(@1, (String("Left operand of operator '>' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '>' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1108              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1109          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1110              PARSE_ERR(@3, (String("Right operand of operator '>' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator '>' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1111              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1112          } else {          } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1113                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1114                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1115                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1116                $$ = new IntLiteral({ .value = 0 });
1117            } else {
1118                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1119                    PARSE_WRN(@3, "Right operand of '>' comparison is not 'final', left operand is 'final' though.");
1120                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1121                    PARSE_WRN(@1, "Left operand of '>' comparison is not 'final', right operand is 'final' though.");
1122              $$ = new Relation(lhs, Relation::GREATER_THAN, rhs);              $$ = new Relation(lhs, Relation::GREATER_THAN, rhs);
1123          }          }
1124      }      }
1125      | rel_expr LE add_expr  {      | rel_expr LE add_expr  {
1126          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1127          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1128          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1129              PARSE_ERR(@1, (String("Left operand of operator '<=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '<=' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1130              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1131          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1132              PARSE_ERR(@3, (String("Right operand of operator '<=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator '<=' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1133              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1134          } else {          } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1135                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1136                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1137                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1138                $$ = new IntLiteral({ .value = 0 });
1139            } else {
1140                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1141                    PARSE_WRN(@3, "Right operand of '<=' comparison is not 'final', left operand is 'final' though.");
1142                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1143                    PARSE_WRN(@1, "Left operand of '<=' comparison is not 'final', right operand is 'final' though.");
1144              $$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs);              $$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs);
1145          }          }
1146      }      }
1147      | rel_expr GE add_expr  {      | rel_expr GE add_expr  {
1148          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1149          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1150          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1151              PARSE_ERR(@1, (String("Left operand of operator '>=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '>=' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1152              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1153          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1154              PARSE_ERR(@3, (String("Right operand of operator '>=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of operator '>=' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1155              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1156          } else {          } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1157                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1158                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1159                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1160                $$ = new IntLiteral({ .value = 0 });
1161            } else {
1162                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1163                    PARSE_WRN(@3, "Right operand of '>=' comparison is not 'final', left operand is 'final' though.");
1164                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1165                    PARSE_WRN(@1, "Left operand of '>=' comparison is not 'final', right operand is 'final' though.");
1166              $$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs);              $$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs);
1167          }          }
1168      }      }
1169      | rel_expr '=' add_expr  {      | rel_expr '=' add_expr  {
1170          $$ = new Relation($1, Relation::EQUAL, $3);          ExpressionRef lhs = $1;
1171            ExpressionRef rhs = $3;
1172            if (!isNumber(lhs->exprType())) {
1173                PARSE_ERR(@1, (String("Left operand of operator '=' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1174                $$ = new IntLiteral({ .value = 0 });
1175            } else if (!isNumber(rhs->exprType())) {
1176                PARSE_ERR(@3, (String("Right operand of operator '=' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1177                $$ = new IntLiteral({ .value = 0 });
1178            } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1179                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1180                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1181                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1182                $$ = new IntLiteral({ .value = 0 });
1183            } else {
1184                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1185                    PARSE_WRN(@3, "Right operand of '=' comparison is not 'final', left operand is 'final' though.");
1186                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1187                    PARSE_WRN(@1, "Left operand of '=' comparison is not 'final', right operand is 'final' though.");
1188                $$ = new Relation(lhs, Relation::EQUAL, rhs);
1189            }
1190      }      }
1191      | rel_expr '#' add_expr  {      | rel_expr '#' add_expr  {
1192          $$ = new Relation($1, Relation::NOT_EQUAL, $3);          ExpressionRef lhs = $1;
1193            ExpressionRef rhs = $3;
1194            if (!isNumber(lhs->exprType())) {
1195                PARSE_ERR(@1, (String("Left operand of operator '#' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1196                $$ = new IntLiteral({ .value = 0 });
1197            } else if (!isNumber(rhs->exprType())) {
1198                PARSE_ERR(@3, (String("Right operand of operator '#' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1199                $$ = new IntLiteral({ .value = 0 });
1200            } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1201                PARSE_ERR(@2, (String("Operands of relative operations must have same unit, left operand is ") +
1202                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1203                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1204                $$ = new IntLiteral({ .value = 0 });
1205            } else {
1206                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1207                    PARSE_WRN(@3, "Right operand of '#' comparison is not 'final', left operand is 'final' though.");
1208                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1209                    PARSE_WRN(@1, "Left operand of '#' comparison is not 'final', right operand is 'final' though.");
1210                $$ = new Relation(lhs, Relation::NOT_EQUAL, rhs);
1211            }
1212      }      }
1213    
1214  add_expr:  add_expr:
# Line 650  add_expr: Line 1216  add_expr:
1216      | add_expr '+' mul_expr  {      | add_expr '+' mul_expr  {
1217          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1218          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1219          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1220              PARSE_ERR(@1, (String("Left operand of operator '+' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '+' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1221              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1222          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1223              PARSE_ERR(@3, (String("Right operand of operator '+' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Right operand of operator '+' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1224              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1225          } else {          } else if (lhs->exprType() != rhs->exprType()) {
1226                PARSE_ERR(@2, (String("Operands of operator '+' must have same type; left operand is ") +
1227                          typeStr(lhs->exprType()) + " and right operand is " + typeStr(rhs->exprType()) + " though.").c_str());
1228                $$ = new IntLiteral({ .value = 0 });
1229            } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1230                PARSE_ERR(@2, (String("Operands of '+' operations must have same unit, left operand is ") +
1231                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1232                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1233                $$ = new IntLiteral({ .value = 0 });
1234            } else {
1235                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1236                    PARSE_WRN(@3, "Right operand of '+' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1237                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1238                    PARSE_WRN(@1, "Left operand of '+' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1239              $$ = new Add(lhs,rhs);              $$ = new Add(lhs,rhs);
1240          }          }
1241      }      }
1242      | add_expr '-' mul_expr  {      | add_expr '-' mul_expr  {
1243          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1244          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1245          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1246              PARSE_ERR(@1, (String("Left operand of operator '-' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '-' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1247              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1248          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1249              PARSE_ERR(@3, (String("Right operand of operator '-' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Right operand of operator '-' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1250              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1251          } else {          } else if (lhs->exprType() != rhs->exprType()) {
1252                PARSE_ERR(@2, (String("Operands of operator '-' must have same type; left operand is ") +
1253                          typeStr(lhs->exprType()) + " and right operand is " + typeStr(rhs->exprType()) + " though.").c_str());
1254                $$ = new IntLiteral({ .value = 0 });
1255            } else if (lhs->asNumber()->unitType() != rhs->asNumber()->unitType()) {
1256                PARSE_ERR(@2, (String("Operands of '-' operations must have same unit, left operand is ") +
1257                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1258                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1259                $$ = new IntLiteral({ .value = 0 });
1260            } else {
1261                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1262                    PARSE_WRN(@3, "Right operand of '-' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1263                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1264                    PARSE_WRN(@1, "Left operand of '-' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1265              $$ = new Sub(lhs,rhs);              $$ = new Sub(lhs,rhs);
1266          }          }
1267      }      }
# Line 679  mul_expr: Line 1271  mul_expr:
1271      | mul_expr '*' unary_expr  {      | mul_expr '*' unary_expr  {
1272          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1273          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1274          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1275              PARSE_ERR(@1, (String("Left operand of operator '*' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '*' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1276              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1277          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1278              PARSE_ERR(@3, (String("Right operand of operator '*' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Right operand of operator '*' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1279              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1280          } else {          } else if (lhs->asNumber()->unitType() && rhs->asNumber()->unitType()) {
1281                PARSE_ERR(@2, (String("Only one operand of operator '*' may have a unit type, left operand is ") +
1282                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1283                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1284                $$ = new IntLiteral({ .value = 0 });
1285            } else if (lhs->exprType() != rhs->exprType()) {
1286                PARSE_ERR(@2, (String("Operands of operator '*' must have same type; left operand is ") +
1287                          typeStr(lhs->exprType()) + " and right operand is " + typeStr(rhs->exprType()) + " though.").c_str());
1288                $$ = new IntLiteral({ .value = 0 });
1289            } else {
1290                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1291                    PARSE_WRN(@3, "Right operand of '*' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1292                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1293                    PARSE_WRN(@1, "Left operand of '*' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1294              $$ = new Mul(lhs,rhs);              $$ = new Mul(lhs,rhs);
1295          }          }
1296      }      }
1297      | mul_expr '/' unary_expr  {      | mul_expr '/' unary_expr  {
1298          ExpressionRef lhs = $1;          ExpressionRef lhs = $1;
1299          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1300          if (lhs->exprType() != INT_EXPR) {          if (!isNumber(lhs->exprType())) {
1301              PARSE_ERR(@1, (String("Left operand of operator '/' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of operator '/' must be a scalar number expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1302              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1303          } else if (rhs->exprType() != INT_EXPR) {          } else if (!isNumber(rhs->exprType())) {
1304              PARSE_ERR(@3, (String("Right operand of operator '/' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Right operand of operator '/' must be a scalar number expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1305              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1306          } else {          } else if (lhs->asNumber()->unitType() && rhs->asNumber()->unitType() &&
1307                       lhs->asNumber()->unitType() != rhs->asNumber()->unitType())
1308            {
1309                PARSE_ERR(@2, (String("Operands of operator '/' with two different unit types, left operand is ") +
1310                    unitTypeStr(lhs->asNumber()->unitType()) + " and right operand is " +
1311                    unitTypeStr(rhs->asNumber()->unitType()) + " though.").c_str());
1312                $$ = new IntLiteral({ .value = 0 });
1313            } else if (!lhs->asNumber()->unitType() && rhs->asNumber()->unitType()) {
1314                PARSE_ERR(@3, ("Dividing left operand without any unit type by right operand with unit type (" +
1315                    unitTypeStr(rhs->asNumber()->unitType()) + ") is not possible.").c_str());
1316                $$ = new IntLiteral({ .value = 0 });
1317            } else if (lhs->exprType() != rhs->exprType()) {
1318                PARSE_ERR(@2, (String("Operands of operator '/' must have same type; left operand is ") +
1319                          typeStr(lhs->exprType()) + " and right operand is " + typeStr(rhs->exprType()) + " though.").c_str());
1320                $$ = new IntLiteral({ .value = 0 });
1321            } else {
1322                if (lhs->asNumber()->isFinal() && !rhs->asNumber()->isFinal())
1323                    PARSE_WRN(@3, "Right operand of '/' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1324                else if (!lhs->asNumber()->isFinal() && rhs->asNumber()->isFinal())
1325                    PARSE_WRN(@1, "Left operand of '/' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1326              $$ = new Div(lhs,rhs);              $$ = new Div(lhs,rhs);
1327          }          }
1328      }      }
# Line 707  mul_expr: Line 1331  mul_expr:
1331          ExpressionRef rhs = $3;          ExpressionRef rhs = $3;
1332          if (lhs->exprType() != INT_EXPR) {          if (lhs->exprType() != INT_EXPR) {
1333              PARSE_ERR(@1, (String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());              PARSE_ERR(@1, (String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str());
1334              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1335          } else if (rhs->exprType() != INT_EXPR) {          } else if (rhs->exprType() != INT_EXPR) {
1336              PARSE_ERR(@3, (String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());              PARSE_ERR(@3, (String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str());
1337              $$ = new IntLiteral(0);              $$ = new IntLiteral({ .value = 0 });
1338          } else {          } else {
1339                if (lhs->asInt()->unitType() || lhs->asInt()->hasUnitFactorEver())
1340                    PARSE_ERR(@1, "Operands of modulo operator must not use any unit.");
1341                if (rhs->asInt()->unitType() || rhs->asInt()->hasUnitFactorEver())
1342                    PARSE_ERR(@3, "Operands of modulo operator must not use any unit.");
1343                if (lhs->asInt()->isFinal() && !rhs->asInt()->isFinal())
1344                    PARSE_WRN(@3, "Right operand of 'mod' operation is not 'final', result will be 'final' though since left operand is 'final'.");
1345                else if (!lhs->asInt()->isFinal() && rhs->asInt()->isFinal())
1346                    PARSE_WRN(@1, "Left operand of 'mod' operation is not 'final', result will be 'final' though since right operand is 'final'.");
1347              $$ = new Mod(lhs,rhs);              $$ = new Mod(lhs,rhs);
1348          }          }
1349      }      }
# Line 727  void InstrScript_warning(YYLTYPE* locp, Line 1359  void InstrScript_warning(YYLTYPE* locp,
1359      //fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt);      //fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt);
1360      context->addWrn(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, txt);      context->addWrn(locp->first_line, locp->last_line, locp->first_column+1, locp->last_column+1, txt);
1361  }  }
1362    
1363    /// Custom implementation of yytnamerr() to ensure quotation is always stripped from token names before printing them to error messages.
1364    int InstrScript_tnamerr(char* yyres, const char* yystr) {
1365      if (*yystr == '"') {
1366          int yyn = 0;
1367          char const *yyp = yystr;
1368          for (;;)
1369            switch (*++yyp)
1370              {
1371    /*
1372              case '\'':
1373              case ',':
1374                goto do_not_strip_quotes;
1375    
1376              case '\\':
1377                if (*++yyp != '\\')
1378                  goto do_not_strip_quotes;
1379    */
1380                /* Fall through.  */
1381              default:
1382                if (yyres)
1383                  yyres[yyn] = *yyp;
1384                yyn++;
1385                break;
1386    
1387              case '"':
1388                if (yyres)
1389                  yyres[yyn] = '\0';
1390                return yyn;
1391              }
1392    /*
1393        do_not_strip_quotes: ;
1394    */
1395        }
1396    
1397      if (! yyres)
1398        return (int) yystrlen (yystr);
1399    
1400      return int( yystpcpy (yyres, yystr) - yyres );
1401    }
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