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4771 lines (4471 loc) · 298 KB
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%{
#include <stdio.h>
#include<math.h>
//extern FILE *fptr;
extern struct symbol_table;
extern struct symbol_table *t;
extern int flag_dtype;
extern char d_type[10];
extern char id_name[32];
char d_type[10];
int flag_dtype=0;
char id_name[32];
extern char current_level[100];
extern int current_level_length;
extern int previous_level;
extern FILE *fptr;
FILE *fptr;
char current_level[100]={'0'};
int current_level_length=1;
int previous_level=0;
//Used for label and temporary variable generation
int temp_counter=0;
char temp_buffer[50];
char label_buffer[50];
int label_counter=0;
//represents the labels used in if and while loops
//char L1[50];
//char L2[50];
//char L_ARR[100][10];
int QUAD_INDEX=0;
//symbol_table *t=NULL;
#ifndef _HEADER_H
#define _HEADER_H
#include "while_java.h"
#endif
AST_NODE *scope_numbering[100];
int ast_scope=0;
LABEL_ARR label_arr[100];
%}
%token T_IMPORT T_DOT T_SEMICOLON T_ID T_ACCESS_SPECIFIER T_CLASS T_LEFT_FLOW_PARAN T_RIGHT_FLOW_PARAN T_STATIC T_DTYPE T_MAIN T_LEFT_PARAN T_RIGHT_PARAN T_LEFT_BRACKET T_RIGHT_BRACKET T_NEWLINE T_WHILE T_LOR T_LAND T_XOR T_GREATER_EQUALTO T_LESS_EQUALTO T_GREATERTHAN T_LESSTHAN T_EQUALTO T_ADD_SHORT T_SUB_SHORT T_MUL_SHORT T_DIV_SHORT T_MOD_SHORT T_DOUBLE_EQUALTO T_NOT_EQUALTO T_BITAND T_BITOR T_BIT_LEFT_SHIFT T_BIT_RIGHT_SHIFT T_PLUS T_MINUS T_MUL T_DIV T_MOD T_INCREMENT T_DECREMENT T_CHARACTER T_COMMA T_DIGIT T_IF T_ELSE T_SQUOTE T_LNOT T_QUOTE T_TRUE T_FALSE T_VOID T_DECIMAL
//%type <strval> T_ID stmt
%type<s1> H O C T_ID stmt T_DIGIT T_DECIMAL T_TRUE T_FALSE T_CHARACTER bool_exp
%type<strval> string
%type<strval> T_DTYPE
//TO DO: Handle byte, String, long, short
//TO DO: Handle type checking
//TODO: Use inherited attributes for if and while
%union{
struct{
int id_flag; /* Checks if identifier is found*/
char strval[100]; /*Stores the identifier */
/* Store values of identifiers*/
char ch;
double doubval;
int intval;
int boolval;
int byteval;
char d_type[32];
char next[50];
/*For AST*/
AST_NODE *temp;
}s1;
//for boolean expressions
int intval;
double dbval;
char chval;
char strval[100];
int boolval;
};
%locations
%right T_EQUALTO T_ADD_SHORT T_SUB_SHORT T_MUL_SHORT T_DIV_SHORT T_MOD_SHORT
%left T_LOR
%left T_LAND
%left T_BITOR
%left T_XOR
%left T_BITAND
%left T_DOUBLE_EQUALTO T_NOT_EQUALTO
%left T_LESSTHAN T_LESS_EQUALTO T_GREATERTHAN T_GREATER_EQUALTO
%left T_BIT_LEFT_SHIFT T_BIT_RIGHT_SHIFT
%left T_PLUS T_MINUS
%left T_MUL T_DIV T_MOD
%right T_INCREMENT T_DECREMENT T_LNOT
%left T_LEFT_PARAN T_RIGHT_PARAN
%%
start: preprocessor class_declaration {printf("Success\n");display_table(t);display_quadruple();dead_code_elimination();exit(0);}
;
preprocessor: /*lambda */
| T_IMPORT header T_SEMICOLON
;
header: T_ID T_DOT header
| T_ID
;
class_declaration: T_ACCESS_SPECIFIER T_CLASS T_ID T_LEFT_FLOW_PARAN program T_RIGHT_FLOW_PARAN
;
program: T_ACCESS_SPECIFIER T_STATIC T_VOID T_MAIN T_LEFT_PARAN T_DTYPE T_LEFT_BRACKET T_RIGHT_BRACKET T_ID T_RIGHT_PARAN T_LEFT_FLOW_PARAN
{
if(flag_dtype==1){
printf("Flag dtype %d\n",flag_dtype);
strcpy(id_name,$<s1.strval>9);
printf("yylval.strval %s\n",id_name);
VALUES new_val;
strcpy(new_val.sval,"\0");
node* f=insert_table(t,"T_ID",flag_dtype,id_name,d_type,new_val);
flag_dtype=0;
}
enter_scope();
}
stmt T_RIGHT_FLOW_PARAN {
display_AST(scope_numbering[0]);
exit_scope();}
/*| T_ACCESS_SPECIFIER T_STATIC T_DTYPE T_MAIN T_LEFT_PARAN T_DTYPE T_LEFT_BRACKET T_RIGHT_BRACKET T_ID T_RIGHT_PARAN T_LEFT_FLOW_PARAN stmt T_RIGHT_FLOW_PARAN */
/*| T_ACCESS_SPECIFIER T_STATIC T_DTYPE T_MAIN T_LEFT_PARAN T_DTYPE T_LEFT_BRACKET T_RIGHT_BRACKET T_ID T_RIGHT_PARAN T_LEFT_FLOW_PARAN stmt T_RIGHT_FLOW_PARAN*/
;
S: T_WHILE
{
int hash_index=hash_scope(current_level);
strcpy((label_arr[hash_index]).L1,new_label());
add_quadruple("Label",NULL,NULL,label_arr[hash_index].L1);
strcpy(label_arr[hash_index].L2,new_label());
}
T_LEFT_PARAN bool_exp
{
int hash_index=hash_scope(current_level);
add_quadruple("ifFalse",$<s1.strval>4,NULL,label_arr[hash_index].L2);
}
T_RIGHT_PARAN T_LEFT_FLOW_PARAN
{
enter_scope();
}
stmt
T_RIGHT_FLOW_PARAN
{
AST_NODE *temp=create_ast_node("while");
AST_NODE *child1=$<s1.temp>4;
AST_NODE *child2=scope_numbering[ast_scope-1];
insert_child_ast_node(temp,child1);
insert_child_ast_node(temp,child2);
exit_scope();
int hash_index=hash_scope(current_level);
add_quadruple("goto",NULL,NULL,label_arr[hash_index].L1);
add_quadruple("Label",NULL,NULL,label_arr[hash_index].L2);
insert_child_ast_node(scope_numbering[ast_scope-1],temp);
}
/*| T_WHILE T_LEFT_PARAN bool_exp T_RIGHT_PARAN T_LEFT_FLOW_PARAN {enter_scope();}
stmt ST_RIGHT_FLOW_PARAN {exit_scope();}*/
;
bool_exp: bool_exp T_LOR bool_exp
{
AST_NODE *temp=create_ast_node("||");
insert_child_ast_node(temp,$<s1.temp>1);
insert_child_ast_node(temp,$<s1.temp>3);
$<s1.temp>$=temp;
if($<s1.id_flag>3==1 && $<s1.id_flag>1==1){
//if C is variable->s1.id_flag
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp(t1->datatype,t2->datatype)){
yyerror("Semantic Error in |: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"boolean"))){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival | new_val2->sival;
}
else{
yyerror("Semantic Error in |: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("||",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==1 && $<s1.id_flag>3==0){
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>3,t2->datatype)){
yyerror("Semantic Error in |: Incompatible types");
}
else{
if((!strcmp(t2->datatype,"boolean"))){
new_val2->sival=$<s1.boolval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival | new_val2->sival;
}
else{
yyerror("Semantic Error in |: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("||",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==0 && $<s1.id_flag>3==1){
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,t1->datatype)){
yyerror("Semantic Error in |: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"boolean"))){
new_val1->sival=$<s1.boolval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival | new_val2->sival;
}
else{
yyerror("Semantic Error in |: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("||",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
free(new_val1);
free(new_val2);
}
else {
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,$<s1.d_type>3)){
yyerror("Semantic Error in |: Incompatible types");
}
else{
if((!strcmp($<s1.d_type>1,"boolean"))){
new_val1->sival=$<s1.boolval>1;
new_val2->sival=$<s1.boolval>3;
new_val.sival=new_val1->sival | new_val2->sival;
}
else{
yyerror("Semantic Error in |: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("||",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
$<s1.id_flag>$=1;
}
}
| bool_exp T_LAND bool_exp
{
AST_NODE *temp=create_ast_node("&&");
insert_child_ast_node(temp,$<s1.temp>1);
insert_child_ast_node(temp,$<s1.temp>3);
$<s1.temp>$=temp;
if($<s1.id_flag>3==1 && $<s1.id_flag>1==1){
//if C is variable->s1.id_flag
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp(t1->datatype,t2->datatype)){
yyerror("Semantic Error in &: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"boolean"))){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival & new_val2->sival;
}
else{
yyerror("Semantic Error in &: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("&&",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==1 && $<s1.id_flag>3==0){
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>3,t2->datatype)){
yyerror("Semantic Error in &: Incompatible types");
}
else{
if((!strcmp(t2->datatype,"boolean"))){
new_val2->sival=$<s1.boolval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival & new_val2->sival;
}
else{
yyerror("Semantic Error in &: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("&&",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==0 && $<s1.id_flag>3==1){
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,t1->datatype)){
yyerror("Semantic Error in &: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"boolean"))){
new_val1->sival=$<s1.boolval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival & new_val2->sival;
}
else{
yyerror("Semantic Error in &: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("&&",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
free(new_val1);
free(new_val2);
}
else {
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,$<s1.d_type>3)){
yyerror("Semantic Error in &: Incompatible types");
}
else{
if((!strcmp($<s1.d_type>1,"boolean"))){
new_val1->sival=$<s1.boolval>1;
new_val2->sival=$<s1.boolval>3;
new_val.sival=new_val1->sival & new_val2->sival;
}
else{
yyerror("Semantic Error in &: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("&&",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
$<s1.id_flag>$=1;
}
}
| bool_exp T_DOUBLE_EQUALTO bool_exp
{
AST_NODE *temp=create_ast_node("==");
insert_child_ast_node(temp,$<s1.temp>1);
insert_child_ast_node(temp,$<s1.temp>3);
$<s1.temp>$=temp;
if($<s1.id_flag>3==1 && $<s1.id_flag>1==1){
//if C is variable->s1.id_flag
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp(t1->datatype,t2->datatype)){
yyerror("Semantic Error in ==: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"int"))){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->ival == new_val2->ival;
}
else if(!strcmp(t1->datatype,"short")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t1->datatype,"long")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->lival == new_val2->lival;
}
else if(!strcmp(t1->datatype,"byte")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t1->datatype,"float")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->fval == new_val2->fval;
}
else if(!strcmp(t1->datatype,"double")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->dval == new_val2->dval;
}
else if(!strcmp(t1->datatype,"char")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->cval == new_val2->cval;
}
else if(!strcmp(t1->datatype,"String")){
get_value(t1,new_val1);
get_value(t2,new_val2);
if(!strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in %: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("==",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==1 && $<s1.id_flag>3==0){
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>3,t2->datatype)){
yyerror("Semantic Error in ==: Incompatible types");
}
else{
if((!strcmp(t2->datatype,"int"))){
new_val2->ival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->ival == new_val2->ival;
}
else if(!strcmp(t2->datatype,"short")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t2->datatype,"long")){
new_val2->lival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->lival == new_val2->lival;
}
else if(!strcmp(t2->datatype,"byte")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t2->datatype,"float")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->fval == new_val2->fval;
}
else if(!strcmp(t2->datatype,"double")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->dval == new_val2->dval;
}
else if(!strcmp(t2->datatype,"char")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->cval == new_val2->cval;
}
else if(!strcmp(t2->datatype,"String")){
strcpy(new_val2->sval,$<s1.strval>3);
get_value(t2,new_val1);
if(!strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in ==: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("==",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==0 && $<s1.id_flag>3==1){
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,t1->datatype)){
yyerror("Semantic Error in ==: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"int"))){
new_val1->ival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->ival == new_val2->ival;
}
else if(!strcmp(t1->datatype,"short")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t1->datatype,"long")){
new_val1->lival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->lival == new_val2->lival;
}
else if(!strcmp(t1->datatype,"byte")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp(t1->datatype,"float")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->fval == new_val2->fval;
}
else if(!strcmp(t1->datatype,"double")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->dval == new_val2->dval;
}
else if(!strcmp(t1->datatype,"char")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->cval == new_val2->cval;
}
else if(!strcmp(t1->datatype,"String")){
strcpy(new_val1->sval,$<s1.strval>1);
get_value(t1,new_val2);
if(!strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in ==: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("==",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else {
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,$<s1.d_type>3)){
yyerror("Semantic Error in ==: Incompatible types");
}
else{
if((!strcmp($<s1.d_type>1,"int"))){
new_val1->ival=$<s1.intval>1;
new_val2->ival=$<s1.intval>3;
new_val.sival=new_val1->ival == new_val2->ival;
}
else if(!strcmp($<s1.d_type>1,"short")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp($<s1.d_type>1,"long")){
new_val1->lival=$<s1.intval>1;
new_val2->lival=$<s1.intval>3;
new_val.sival=new_val1->lival == new_val2->lival;
}
else if(!strcmp($<s1.d_type>1,"byte")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->sival == new_val2->sival;
}
else if(!strcmp($<s1.d_type>1,"float")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->fval == new_val2->fval;
}
else if(!strcmp($<s1.d_type>1,"double")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->dval == new_val2->dval;
}
else if(!strcmp($<s1.d_type>1,"char")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->cval == new_val2->cval;
}
else if(!strcmp($<s1.d_type>1,"String")){
strcpy(new_val1->sval,$<s1.strval>1);
strcpy(new_val2->sval,$<s1.strval>3);
if(!strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in ==: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("==",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
$<s1.id_flag>$=1;
}
}
| bool_exp T_NOT_EQUALTO bool_exp
{
AST_NODE *temp=create_ast_node("!=");
insert_child_ast_node(temp,$<s1.temp>1);
insert_child_ast_node(temp,$<s1.temp>3);
$<s1.temp>$=temp;
if($<s1.id_flag>3==1 && $<s1.id_flag>1==1){
//if C is variable->s1.id_flag
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp(t1->datatype,t2->datatype)){
yyerror("Semantic Error in !=: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"int"))){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->ival!= new_val2->ival;
}
else if(!strcmp(t1->datatype,"short")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival!= new_val2->sival;
}
else if(!strcmp(t1->datatype,"long")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->lival!= new_val2->lival;
}
else if(!strcmp(t1->datatype,"byte")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->sival!= new_val2->sival;
}
else if(!strcmp(t1->datatype,"float")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->fval!= new_val2->fval;
}
else if(!strcmp(t1->datatype,"double")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->dval!= new_val2->dval;
}
else if(!strcmp(t1->datatype,"char")){
get_value(t1,new_val1);
get_value(t2,new_val2);
new_val.sival=new_val1->cval!= new_val2->cval;
}
else if(!strcmp(t1->datatype,"String")){
get_value(t1,new_val1);
get_value(t2,new_val2);
if(strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in!=: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("!=",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==1 && $<s1.id_flag>3==0){
strcpy(id_name,$<s1.strval>1);
node *t2=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>3,t2->datatype)){
yyerror("Semantic Error in !=: Incompatible types");
}
else{
if((!strcmp(t2->datatype,"int"))){
new_val2->ival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->ival != new_val2->ival;
}
else if(!strcmp(t2->datatype,"short")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival != new_val2->sival;
}
else if(!strcmp(t2->datatype,"long")){
new_val2->lival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->lival != new_val2->lival;
}
else if(!strcmp(t2->datatype,"byte")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->sival != new_val2->sival;
}
else if(!strcmp(t2->datatype,"float")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->fval != new_val2->fval;
}
else if(!strcmp(t2->datatype,"double")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->dval != new_val2->dval;
}
else if(!strcmp(t2->datatype,"char")){
new_val2->sival=$<s1.intval>3;
get_value(t2,new_val1);
new_val.sival=new_val1->cval != new_val2->cval;
}
else if(strcmp(t2->datatype,"String")){
strcpy(new_val2->sval,$<s1.strval>3);
get_value(t2,new_val1);
if(strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in !=: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("!=",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else if($<s1.id_flag>1==0 && $<s1.id_flag>3==1){
strcpy(id_name,$<s1.strval>3);
node *t1=variable_access(t,id_name);
$<s1.id_flag>$=1;
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,t1->datatype)){
yyerror("Semantic Error in !=: Incompatible types");
}
else{
if((!strcmp(t1->datatype,"int"))){
new_val1->ival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->ival != new_val2->ival;
}
else if(!strcmp(t1->datatype,"short")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival != new_val2->sival;
}
else if(!strcmp(t1->datatype,"long")){
new_val1->lival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->lival != new_val2->lival;
}
else if(!strcmp(t1->datatype,"byte")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->sival != new_val2->sival;
}
else if(!strcmp(t1->datatype,"float")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->fval != new_val2->fval;
}
else if(!strcmp(t1->datatype,"double")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->dval != new_val2->dval;
}
else if(!strcmp(t1->datatype,"char")){
new_val1->sival=$<s1.intval>1;
get_value(t1,new_val2);
new_val.sival=new_val1->cval != new_val2->cval;
}
else if(!strcmp(t1->datatype,"String")){
strcpy(new_val1->sval,$<s1.strval>1);
get_value(t1,new_val2);
if(strcmp(new_val1->sval,new_val2->sval))
new_val.sival=1;
else
new_val.sival=0;
}
else{
yyerror("Semantic Error in !=: Incompatible types");
}
}
insert_table(t,"T_ID",1,$<s1.strval>$,d_type,new_val);
add_quadruple("!=",$<s1.strval>1,$<s1.strval>3,$<s1.strval>$);
;
free(new_val1);
free(new_val2);
}
else {
strcpy($<s1.strval>$,gen_temp()); //generates a new temp variable
/* add temporary variable to symbol table*/
strcpy(d_type,"boolean");
//evaluate value of temporary variable
VALUES *new_val1=(VALUES *)malloc(sizeof(VALUES));
VALUES *new_val2=(VALUES *)malloc(sizeof(VALUES));
VALUES new_val;
if(strcmp($<s1.d_type>1,$<s1.d_type>3)){
yyerror("Semantic Error in !=: Incompatible types");
}
else{
if((!strcmp($<s1.d_type>1,"int"))){
new_val1->ival=$<s1.intval>1;
new_val2->ival=$<s1.intval>3;
new_val.sival=new_val1->ival != new_val2->ival;
}
else if(!strcmp($<s1.d_type>1,"short")){
new_val1->sival=$<s1.intval>1;
new_val2->sival=$<s1.intval>3;
new_val.sival=new_val1->sival != new_val2->sival;
}
else if(!strcmp($<s1.d_type>1,"long")){
new_val1->lival=$<s1.intval>1;
new_val2->lival=$<s1.intval>3;