-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathparser.y
2633 lines (2090 loc) · 64.4 KB
/
parser.y
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
%{
#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include "1905050_symbolTable.h"
using namespace std;
int yyparse(void);
int yylex(void);
extern FILE *yyin;
extern symbolTable symbol_table;
extern int count_line;
extern int error_num;
extern ofstream log_file;
ofstream error_file;
ofstream parseTree_file;
extern string UpperCase(string s);
vector<pair<string,string>> parameter_list;
vector<symbolInfo*> argument_list;
string function_name, function_type;
string variable_type;
bool isFunctionDefined = false;
bool isFunctionDeclared = false;
bool isIdDeclared = false;
bool functionReturnFound = false;
bool isErrorFunction = false;
//parse tree
string parse_line;
int scope_id = 1;
int bucketSize = 11;
int label_count = 1;
int temp_count = 0;
int asm_LineCount = 0;
int asm_CS_endLine = 0;
int asm_DS_endLine = 0;
string new_label(){
string label;
label = "L_" + to_string(label_count);
label_count++;
return label;
}
string new_temp(){
string temp;
temp = "t" + to_string(temp_count);
temp_count++;
return temp;
}
void generateError(string s){
error_file << "Line# " << count_line << ": " << s << endl;
error_num++;
}
void yyerror(const char *s){
//write your code
//error_file << "Line# " << count_line << ": Syntax error" << s << endl;
//generateError("Syntax error "+string(s));
}
int string_line_count(string str){
int line_count = 1;
//count lines in string with new lines
for(int i=0; i<str.size(); i++){
if(str[i] == '\n'){
line_count++;
}
}
return line_count;
}
void addCS_endLine(int count){
asm_CS_endLine += count;
asm_LineCount += count;
}
void write(string file_name, string str,bool isAppend = false){
ofstream file;
if(isAppend){
file.open(file_name, ios::app);
}
else{
file.open(file_name);
}
file << str << endl;
file.close();
}
void writeMiddle(string file_name, string str,int line){
//make new file named "temp.asm"
//copy the code from "code.asm" upto line
//then append the str and append the rest of "code.asm" to "temp.asm"
//copy "temp.asm" to "code.asm"
ofstream temp_file;
temp_file.open("temp.asm");
ifstream asm_file;
asm_file.open("code.asm");
string line_str;
int line_count = 0;
bool written = false;
while(getline(asm_file, line_str)){
//line_count++;
if(line_count == line){
temp_file << str << endl;
written = true;
}
temp_file << line_str << endl;
line_count++;
}
if(written == false){
temp_file << str << endl;
written = true;
}
//remove code.asm and rename temp.asm to code.asm
asm_file.close();
temp_file.close();
remove("code.asm");
rename("temp.asm", "code.asm");
}
void writeCS(string str){
//cout<<asm_CS_endLine<<endl;
addCS_endLine(string_line_count(str)+1);
writeMiddle("code.asm", str, asm_CS_endLine);
}
bool checkVoid(string type){
//error_file<<type<<endl;
if(type == "CONST_VOID"){
generateError("Void cannot be used in expression ");
return true;
}
return false;
}
void checkFunctionDeclaration(string name, string type){
function_name = name;
function_type = type;
symbolInfo* symbol = new symbolInfo(name, "FUNCTION");
symbol->setReturnType(type);
symbol->setIdStructure(type);
symbol->setIsFunction(true);
bool inserted = symbol_table.Insert(*symbol,log_file);
//inserted
if(inserted){
symbol->setReturnType(type);
//add parameter_list to symbol and remove the list
for(int i=0; i<parameter_list.size(); i++){
//symbolInfo* parameter = new symbolInfo(parameter_list[i].first, parameter_list[i].second);
string str = UpperCase(parameter_list[i].second);
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
symbol->addParameter(str);
}
//parameter_list.clear();
}
//couldn't be inserted
else{
symbolInfo* s = symbol_table.LookUp(name, log_file);
if(s->getIsFunction()){
isFunctionDeclared = true;
if(s->getIsDefined()){
isFunctionDefined = true;
}
else if(s->getIdStructure()!=type){
isErrorFunction = true;
}
}
else{
generateError("'" + name + "' redeclared as different kind of symbol");
isIdDeclared = true;
isErrorFunction = true;
}
}
}
void checkFunctionDefinition(){
if(isIdDeclared){
//generateError("Multiple Declaration of " + name);
return;
}
else if(isFunctionDefined){
generateError("Multiple definition of the function " + function_name);
return;
}
else if(isErrorFunction){
return;
}
symbolInfo* symbol = symbol_table.LookUp_current(function_name, log_file);
symbol->setIsDefined(true);
if(symbol->getReturnType() != function_type && symbol->getReturnType() != "CONST_VOID" && symbol->getName() != "main" && functionReturnFound == false){
//error_file<<symbol->getReturnType()<<" "<<function_type<<endl;
generateError("Function defintion of non void return type must have a return statement");
}
}
void handleTypeCheck(symbolInfo* left_symbol, symbolInfo* right_symbol ,string err_message){
if(left_symbol->getType() == "undeclared" || right_symbol->getType() == "undeclared"){
generateError(err_message);
}
else if(left_symbol->getType() != right_symbol->getType()){
if(left_symbol->getType() == "ARRAY"){
generateError(err_message+", "+left_symbol->getName()+" is an array");
}
else if(right_symbol->getType() == "ARRAY"){
generateError(err_message+", "+right_symbol->getName()+" is an array");
}
else{
generateError(err_message);
}
}
}
string HandleTypeCast(symbolInfo* left_symbol, symbolInfo* right_symbol, string err_message){
if(left_symbol->getType() == "undeclared" || right_symbol->getType() == "undeclared"){
generateError(err_message);
}
else if(left_symbol->getType() != right_symbol->getType()){
if(left_symbol->getType() == "ARRAY"){
handleTypeCheck(left_symbol, right_symbol, err_message);
}
else if(right_symbol->getType() == "ARRAY"){
handleTypeCheck(left_symbol, right_symbol, err_message);
}
else if(left_symbol->getType() == "CONST_FLOAT"){
return "CONST_FLOAT";
}
else if(left_symbol->getType() == "CONST_INT" && (right_symbol->getType()=="CONST_INT" || right_symbol->getType()=="CONST_CHAR" ) ){
return "CONST_INT";
}
else{
handleTypeCheck(left_symbol, right_symbol, err_message);
}
}
return left_symbol->getType();
}
string HandleTypeCastAvoidSide(symbolInfo* left_symbol, symbolInfo* right_symbol, string err_message){
if(left_symbol->getType() == "undeclared" || right_symbol->getType() == "undeclared"){
generateError(err_message);
}
else if(left_symbol->getType() != right_symbol->getType()){
if(left_symbol->getType() == "ARRAY"){
handleTypeCheck(left_symbol, right_symbol, err_message);
}
else if(right_symbol->getType() == "ARRAY"){
handleTypeCheck(left_symbol, right_symbol, err_message);
}
else if(left_symbol->getType() == "CONST_FLOAT" || right_symbol->getType() == "CONST_FLOAT"){
return "CONST_FLOAT";
}
else if(left_symbol->getType() == "CONST_INT" || right_symbol->getType() == "CONST_INT" ){
return "CONST_INT";
}
else{
handleTypeCheck(left_symbol, right_symbol, err_message);
}
}
return left_symbol->getType();
}
void insertVariable(string name, string type, int array_size = 0){
if(symbol_table.hasFunctionDefined(name,log_file)){
generateError("Multiple Declaration of " + name + " as a function");
}
else if(symbol_table.LookUp_current(name, log_file) != NULL){
//check if type contains [] or not
symbolInfo* s = symbol_table.LookUp(name, log_file);
if((type.find("[]") != string::npos)&& !(s->getIsArray())){
generateError("'" + name + "' redeclared as different kind of symbol");
}
else if(!(type.find("[]") != string::npos) && s->getIsArray()){
generateError("'" + name + "' redeclared as different kind of symbol");
}
else{
generateError("Conflicting types for'" + name +"'");
}
}
else{
if(type == "CONST_VOID" || type == "void" || type == "VOID"){
//generateError("Variable can not be of type void");
}
//check if type contains [] or not
else if(type.find("[]") != string::npos){
//array
string str = UpperCase(type.substr(0, type.size()-2));
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
string idStructure = str;
type = "ARRAY";
symbolInfo* symbol = new symbolInfo(name, type);
symbol->setIsArray(true);
symbol->setIdStructure(idStructure);
symbol_table.Insert(*symbol,log_file);
if(symbol_table.get_current_id() != 1 && array_size > 0){
writeCS("\tSUB SP, "+to_string(array_size*2));
}
}
else{
//variable
string str = UpperCase(type);
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
string idStructure = str;
type = "ID";
symbolInfo* symbol = new symbolInfo(name, type);
symbol->setIsArray(false);
symbol->setIdStructure(idStructure);
symbol->setIsID(true);
symbol_table.Insert(*symbol,log_file);
if(symbol_table.get_current_id() != 1 && array_size == 0){
writeCS("\tPUSH BX");
}
}
}
}
void printTree(symbolInfo* root, int level){
for(int i=0; i<level; i++){
parseTree_file <<" ";
}
if(root->getIsLeaf()==true){
//parseTree_file << root->getName() << " " << "Line" << endl;
parseTree_file << root->getType() << " : " << root->getName() <<" "<<"<Line: "<<root->getStartLine()<<">"<< endl;
return;
}
else{
parseTree_file << root->getParseLine() <<" "<<"<Line: "<<root->getStartLine()<<"-"<<root->getEndLine()<<">"<< endl;
}
for(int i=0; i<root->getChildren().size(); i++){
printTree(root->getChildren()[i], level+1);
}
}
void startAsmFile(){
ofstream asm_file;
asm_file.open("code.asm");
asm_file << ".MODEL SMALL" << endl;
asm_file << ".STACK 1000H" << endl;
asm_file << ".DATA" << endl;
asm_file << "\tCR EQU 0DH\n\
LF EQU 0AH\n\
number DB \"00000$\" " << endl;
asm_LineCount += 6;
asm_DS_endLine = asm_LineCount;
asm_file << ".Code" << endl;
asm_LineCount += 1;
asm_CS_endLine = asm_LineCount;
asm_file.close();
}
void endAsmFile(){
ofstream asm_file;
asm_file.open("code.asm", ios::app);
asm_file << "END main" << endl;
asm_LineCount += 1;
asm_file.close();
}
//Global variable and array helper functions
void global_var_declaration(string name, string type,string array_size = "1"){
string str = "\t" + name + " DW "+array_size+" DUP (0000H)" ;
asm_LineCount += 1;
asm_CS_endLine += 1;
writeMiddle("code.asm", str, asm_DS_endLine);
asm_DS_endLine += 1;
}
void start_main(){
string str = "\tMOV AX, @DATA\n\
MOV DS, AX\n\
PUSH BP\n\
MOV BP, SP";
write("code.asm",str,true);
addCS_endLine(4);
}
void end_main(){
string str = "\tMOV AX,4CH\n\
INT 21H";
write("code.asm",str,true);
addCS_endLine(2);
}
void procedure_declaration(string func_name){
symbol_table.reset_currentScopeIdCount();
string str = func_name + " PROC";
write("code.asm",str,true);
addCS_endLine(1);
if(func_name == "main"){
start_main();
}
else{
string str = "\tPUSH BP\n\
MOV BP, SP";
write("code.asm",str,true);
addCS_endLine(2);
}
}
void procedure_end(string func_name, int param_count){
if(func_name == "main"){
end_main();
}
else{
string str = "POP BP\n\
RET " + (param_count ? to_string(param_count*2) : "") ;
//writeCS(str);
}
write("code.asm",func_name+" ENDP",true);
addCS_endLine(1);
}
string JumpConverter(string str){
if(str == "=="){
return "JE";
}
else if(str == "!="){
return "JNE";
}
else if(str == ">"){
return "JG";
}
else if(str == "<"){
return "JL";
}
else if(str == ">="){
return "JGE";
}
else if(str == "<="){
return "JLE";
}
else{
return "ERROR";
}
}
//All sorts of write codes needed
void write_printProc(){
string str ="";
/*str += "print_output proc ;print what is in ax\n\
push ax\n\
push bx\n\
push cx\n\
push dx\n\
push si\n\
lea si,number\n\
mov bx,10\n\
add si,4\n\
cmp ax,0\n\
jnge negate\n\
print:\n\
xor dx,dx\n\
div bx\n\
mov [si],dl\n\
add [si],'0'\n\
dec si\n\
cmp ax,0\n\
jne print\n\
inc si\n\
lea dx,si\n\
mov ah,9\n\
int 21h\n\
pop si\n\
pop dx\n\
pop cx\n\
pop bx\n\
pop ax\n\
ret\n\
negate:\n\
push ax\n\
mov ah,2\n\
mov dl,'-'\n\
int 21h\n\
pop ax\n\
neg ax\n\
jmp print\n\
print_output endp";
*/
str += "\n\tPRINT_OUTPUT PROC\r\n\
; PRINTS THE CONTENTS OF AX\r\n\
PUSH AX\r\n\
PUSH BX\r\n\
PUSH CX\r\n\
PUSH DX\r\n\
PUSH SI\r\n\
LEA SI, number\r\n\
MOV BX, 10\r\n\
ADD SI, 4\r\n\
CMP AX, 0\r\n\
JNGE NEGATE\r\n\
PRINT:\r\n\
XOR DX, DX\r\n\
DIV BX\r\n\
MOV [SI], DL\r\n\
ADD [SI], '0'\r\n\
DEC SI\r\n\
CMP AX, 0\r\n\
JNE PRINT\r\n\
INC SI\r\n\
LEA DX, SI\r\n\
MOV AH, 9\r\n\
INT 21H\r\n\
POP SI\r\n\
POP DX\r\n\
POP CX\r\n\
POP BX\r\n\
POP AX\r\n\
RET\r\n\
NEGATE:\r\n\
PUSH AX\r\n\
MOV AH, 2\r\n\
MOV DL, '-'\r\n\
INT 21H\r\n\
POP AX\r\n\
NEG AX\r\n\
JMP PRINT\r\n\
PRINT_OUTPUT ENDP\r\n";
write("code.asm",str,true);
addCS_endLine(string_line_count(str) + 1);
}
void write_newLineProc(){
string str ="";
/*str += "new_line proc\n\
push ax\n\
push dx\n\
mov ah,2\n\
mov dl,cr\n\
int 21h\n\
mov ah,2\n\
mov dl,lf\n\
int 21h\n\
pop dx\n\
pop ax\n\
ret\n\
new_line endp";
*/
str += "\n\tNEW_LINE PROC\r\n\
; PRINTS A NEW LINE\r\n\
PUSH AX\r\n\
PUSH DX\r\n\
MOV AH, 2\r\n\
MOV DL, cr\r\n\
INT 21H\r\n\
MOV AH, 2\r\n\
MOV DL, lf\r\n\
INT 21H\r\n\
POP DX\r\n\
POP AX\r\n\
RET\r\n\
NEW_LINE ENDP\r\n";
write("code.asm",str,true);
addCS_endLine(string_line_count(str) + 1);
}
%}
%define parse.error verbose
%union {
symbolInfo* symbol_info;
}
%token<symbol_info> IF ELSE FOR WHILE DO BREAK PRINTLN RETURN INT CHAR FLOAT DOUBLE VOID CONTINUE CASE DEFAULT
%token<symbol_info> LPAREN RPAREN LCURL RCURL LTHIRD RTHIRD COMMA SEMICOLON
%token<symbol_info> ID
%token<symbol_info> CONST_INT
%token<symbol_info> CONST_FLOAT
%token<symbol_info> ADDOP MULOP ASSIGNOP RELOP LOGICOP NOT INCOP DECOP INCOP_PRE DECOP_PRE INCOP_POST DECOP_POST
%type<symbol_info> start program unit func_declaration func_definition parameter_list compound_statement var_declaration type_specifier declaration_list statements statement expression_statement variable expression logic_expression rel_expression simple_expression term unary_expression factor argument_list arguments
%left ASSIGNOP
%left LOGICOP
%left RELOP
%left ADDOP
%left MULOP
%right NOT
%right INCOP DECOP
%right INCOP_PRE DECOP_PRE
%left INCOP_POST DECOP_POST
%nonassoc ALTERNATIVE_ELSE
%nonassoc ELSE
%%
start : program
{
//write your code in this block in all the similar blocks below
$$ = new symbolInfo($1->getName(), "variable");
log_file<< "start : program " << endl;
parse_line = "start : program";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($1->getEndLine());
$$->addChild($1);
//printTree($$, 0);
}
;
program : program unit{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $2->getName() , "variable");
log_file<< "program : program unit " << endl;
parse_line = "program : program unit";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($2->getEndLine());
$$->addChild($1);
$$->addChild($2);
}
| unit{
//write your code
$$ = new symbolInfo($1->getName(), "variable");
log_file<< "program : unit " << endl;
parse_line = "program : unit";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($1->getEndLine());
$$->addChild($1);
}
;
unit : var_declaration{
//write your code
$$ = new symbolInfo($1->getName(), "variable");
log_file<< "unit : var_declaration " << endl;
parse_line = "unit : var_declaration";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($1->getEndLine());
$$->addChild($1);
}
| func_declaration{
//write your code
$$ = new symbolInfo($1->getName(), "variable");
log_file<< "unit : func_declaration " << endl;
parse_line = "unit : func_declaration";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($1->getEndLine());
$$->addChild($1);
}
| func_definition{
//write your code
$$ = new symbolInfo($1->getName(), "variable");
log_file<< "unit : func_definition " << endl;
parse_line = "unit : func_definition";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($1->getEndLine());
$$->addChild($1);
}
;
func_declaration : type_specifier ID LPAREN parameter_list RPAREN { procedure_declaration($2->getName()); } SEMICOLON{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $2->getName()+"("+ $4->getName()+")"+";", "variable");
log_file<< "func_declaration : type_specifier ID LPAREN parameter_list RPAREN SEMICOLON " << endl;
parse_line = "func_declaration : type_specifier ID LPAREN parameter_list RPAREN SEMICOLON";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($7->getEndLine());
$$->addChild($1);
$$->addChild($2);
$$->addChild($3);
$$->addChild($4);
$$->addChild($5);
$$->addChild($7);
string str = UpperCase($1->getName());
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
string return_type = str;
string name = $2->getName();
checkFunctionDeclaration(name, return_type);
if(isFunctionDeclared == true){
generateError("'"+name+"' redeclared as different kind of symbol");
}
//clear the function declaration
isFunctionDeclared = false;
isFunctionDefined = false;
isIdDeclared = false;
isErrorFunction = false;
function_name = "";
function_type = "";
//clear parameter list
parameter_list.clear();
}
| type_specifier ID LPAREN RPAREN { procedure_declaration($2->getName()); } SEMICOLON{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $2->getName()+"("+")"+";", "variable");
log_file<< "func_declaration : type_specifier ID LPAREN RPAREN SEMICOLON " << endl;
parse_line = "func_declaration : type_specifier ID LPAREN RPAREN SEMICOLON";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($6->getEndLine());
$$->addChild($1);
$$->addChild($2);
$$->addChild($3);
$$->addChild($4);
$$->addChild($6);
string str = UpperCase($1->getName());
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
string return_type = str;
string name = $2->getName();
checkFunctionDeclaration(name, return_type);
if(isFunctionDeclared == true){
generateError("Multiple Declaration of " + name);
}
//clear the function declaration
isFunctionDeclared = false;
isFunctionDefined = false;
isIdDeclared = false;
isErrorFunction = false;
function_name = "";
function_type = "";
//clear parameter list
parameter_list.clear();
}
;
func_definition : type_specifier ID LPAREN parameter_list RPAREN {string return_type = "CONST_"+UpperCase($1->getName());string name = $2->getName();checkFunctionDeclaration(name, return_type); procedure_declaration(name); }compound_statement{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $2->getName()+"("+ $4->getName()+")"+ $7->getName(), "variable");
log_file<< "func_definition : type_specifier ID LPAREN parameter_list RPAREN compound_statement " << endl;
parse_line = "func_definition : type_specifier ID LPAREN parameter_list RPAREN compound_statement";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($7->getEndLine());
$$->addChild($1);
$$->addChild($2);
$$->addChild($3);
$$->addChild($4);
$$->addChild($5);
//$$->addChild($6);
$$->addChild($7);
checkFunctionDefinition();
isFunctionDeclared = false;
isFunctionDefined = false;
isIdDeclared = false;
isErrorFunction = false;
function_name = "";
function_type = "";
procedure_end($2->getName(),parameter_list.size());
//clear parameter list
parameter_list.clear();
}
| type_specifier ID LPAREN RPAREN {string return_type = "CONST_"+UpperCase($1->getName());string name = $2->getName();checkFunctionDeclaration(name, return_type); procedure_declaration(name);}compound_statement{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $2->getName()+"("+")"+ $6->getName(), "variable");
log_file<< "func_definition : type_specifier ID LPAREN RPAREN compound_statement" << endl;
parse_line = "func_definition : type_specifier ID LPAREN RPAREN compound_statement";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($6->getEndLine());
$$->addChild($1);
$$->addChild($2);
$$->addChild($3);
$$->addChild($4);
//$$->addChild($5);
$$->addChild($6);
checkFunctionDefinition();
isFunctionDeclared = false;
isFunctionDefined = false;
isIdDeclared = false;
isErrorFunction = false;
function_name = "";
function_type = "";
procedure_end($2->getName(),parameter_list.size());
//clear parameter list
parameter_list.clear();
}
;
new_scope : {
if(isFunctionDeclared==true){
symbolInfo* symbol = symbol_table.LookUp(function_name,log_file);
//check return type
if(symbol->getIdStructure() != function_type){
generateError("Conflicting types for '"+ function_name +"'");
}
if(parameter_list.size() != symbol->getParameterListSize()){
generateError("Conflicting types for '"+ function_name +"'");
}
//check parameter type match with declaration
for(int i=0; i<parameter_list.size(); i++){
string str = UpperCase(parameter_list[i].second);
if(str.find("CONST_") != string::npos){
str = str;
}
else{
str = "CONST_" + str;
}
string ptype = str;
if(ptype != symbol->getParameter(i)){
generateError("Parameter type of function "+ function_name +" does not match with its declaration");
}
}
}
scope_id++;
symbol_table.enter_scope(scope_id,bucketSize, log_file);
int j = 0;
j = parameter_list.size();
//cout << "parameter size: " << j << endl;
//insert parameters in symbol table
for(int i=0; i<parameter_list.size(); i++){
//symbolInfo* symbol = new symbolInfo(parameter_list[i].first, Uppercase(parameter_list[i].second));
//symbol_table.Insert(*symbol, log_file);
string name = parameter_list[i].first;
string type = parameter_list[i].second;
string idStructure = UpperCase(type);
type = "ID";
symbolInfo* symbol = new symbolInfo(name, type);
symbol->setIsArray(false);
symbol->setIdStructure(idStructure);
symbol->setIsID(true);
symbol_table.Insert(*symbol,log_file);
symbol->setOffset(2 + (j * 2));
j--;
//cout << "parameter name: " << name << endl;
//cout << "parameter offset: " << symbol->get_offset() << endl;
}
}
;
parameter_list : parameter_list COMMA type_specifier ID{
//write your code
$$ = new symbolInfo($1->getName()+" "+ $3->getName()+" "+ $4->getName(), "variable");
log_file<< "parameter_list : parameter_list COMMA type_specifier ID" << endl;
parse_line = "parameter_list : parameter_list COMMA type_specifier ID";
$$->setParseLine(parse_line);
$$->setStartLine($1->getStartLine());
$$->setEndLine($4->getEndLine());
$$->addChild($1);
$$->addChild($2);
$$->addChild($3);
$$->addChild($4);
string name = $4->getName();