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ass6_13CS10060.y
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%error-verbose
%{
#include <string>
#include <cstdlib>
#include "ass6_13CS10060_translator.h"
using namespace std;
extern "C" int yylex(void);
extern "C" char* yytext;
void yyerror(const char* s);
#define YYDEBUG 1
SymbolTable *globalST,*currentST;
QuadArray *quadsArray;
StringTable *strTable;
Type* currentType;
%}
%union {
int intVal;
double doubleVal;
char charVal;
char* stringVal;
char* identifier;
SymbolTableRow* symrow;
Expression* expr;
ListType* ltype;
ArgList* alist;
int instruction;
Type* _type;
int cpointer;
ParameterList* plist;
};
%token <intVal> INTEGER_CONST
%token <doubleVal> FLOATING_CONST
%token <charVal> CHARACTER_CONST
%token <stringVal> STRING_LIT
%token AUTO
%token BREAK
%token CASE
%token CHAR
%token CONST
%token CONTINUE
%token DEFAULT
%token DO
%token DOUBLE
%token ELSE
%token ENUM
%token EXTERN
%token FLOAT
%token FOR
%token GOTO
%token IF
%token INLINE
%token INT
%token LONG
%token REGISTER
%token RESTRICT
%token RETURN
%token SHORT
%token SIGNED
%token SIZEOF
%token STATIC
%token STRUCT
%token SWITCH
%token TYPEDEF
%token UNION
%token UNSIGNED
%token VOID
%token VOLATILE
%token WHILE
%token _BOOL
%token _COMPLEX
%token _IMAGINARY
%token ENUMERATION_CONST
%token <identifier> IDENTITY
%token ARROW_OP
%token INCREMENT_OP
%token DECREMENT_OP
%token RIGHT_SHIFT_OP
%token LEFT_SHIFT_OP
%token GREATER_EQUAL_OP
%token LESS_EQUAL_OP
%token EQUALITY_OP
%token NOTEQUAL_OP
%token LOGICAL_OR_OP
%token LOGICAL_AND_OP
%token ELLIPSIS
%token MULT_ASSIGNMENT_OP
%token DIV_ASSIGNMENT_OP
%token MOD_ASSIGNMENT_OP
%token ADD_ASSIGNMENT_OP
%token SUB_ASSIGNMENT_OP
%token LSH_ASSIGNMENT_OP
%token RSH_ASSIGNMENT_OP
%token BIAND_ASSIGNMENT_OP
%token BIXOR_ASSIGNMENT_OP
%token BIOR_ASSIGNMENT_OP
%token NEWLINE
%type <expr> expression
%type <expr> primary_expression
%type <expr> postfix_expression
%type <expr> assignment_expression
%type <expr> unary_expression
%type <expr> cast_expression
%type <expr> multiplicative_expression
%type <expr> additive_expression
%type <expr> shift_expression
%type <expr> relational_expression
%type <expr> equality_expression
%type <expr> AND_expression
%type <expr> exclusive_OR_expression
%type <expr> inclusive_OR_expression
%type <expr> logical_AND_expression
%type <expr> logical_OR_expression
%type <expr> conditional_expression
%type <expr> constant_expression
%type <alist> argument_expression_list
%type <instruction>M
%type <ltype>N
%type <_type>type_specifier
%type <_type>specifier_qualifier_list
%type <_type> type_name
%type <_type>declaration_specifiers
%type <ltype> statement
%type <ltype> labeled_statement
%type <ltype> compound_statement
%type <ltype> expression_statement
%type <ltype> selection_statement
%type <ltype> iteration_statement
%type <ltype> jump_statement
%type <ltype> block_item_list
%type <ltype> block_item
%type <expr> expression_opt
%type <symrow> declaration
%type <symrow> init_declarator
%type <_type> init_declarator_list
%type <symrow> initializer
%type <symrow> declarator
%type <symrow> direct_declarator
%type <plist> parameter_type_list
%type <plist> parameter_list
%type <symrow> parameter_declaration
%type <cpointer> pointer
%start translation_unit
%nonassoc LOWER_THAN_ELSE
%nonassoc ELSE
%%
primary_expression: IDENTITY
{
SymbolTableRow* symrow = currentST->lookup($1);
if(!symrow){
yyerror("Variable used before declaration");
}
$$ = new Expression();
$$->loc = symrow;
$$->type = symrow->type;
}
| INTEGER_CONST
{
//cout<<"Inte"<<$1<<endl;
$$ = new Expression();
$$->loc = currentST->gentemp(INT_TYPE,$1,CONSTANT_TEMP);
$$->type = INT_TYPE;
quadsArray->emit(COPY,($$->loc),Value($1));
}
| FLOATING_CONST
{
$$ = new Expression();
$$->loc = currentST->gentemp(DOUBLE_TYPE,$1,CONSTANT_TEMP);
$$->type = DOUBLE_TYPE;
quadsArray->emit(COPY,($$->loc),Value($1));
}
| CHARACTER_CONST
{
$$ = new Expression();
//cout<<$1<<endl;
$$->loc = currentST->gentemp(CHAR_TYPE,$1,CONSTANT_TEMP);
$$->type = CHAR_TYPE;
quadsArray->emit(COPY,($$->loc),Value($1));
}
| ENUMERATION_CONST
{
/* Empty action as enumeration constant not handled */
}
| STRING_LIT
{
$$ = new Expression();
string lstr = strTable->lookup($1);
$$->loc = currentST->gentemp(STRING_TYPE,lstr,CONSTANT_TEMP);
$$->type = STRING_TYPE;
quadsArray->emit(COPY,$$->loc,Value(lstr));
}
| '(' expression ')'
{
$$ = $2;
}
;
postfix_expression: primary_expression
{
$$ = $1;
}
| postfix_expression '[' expression ']'
{
$3->convertBoolToInt();
$$ = new Expression();
$$->array = $1->array;
$$->type = ((Array*)($1->type))->elemType;
$$->loc = currentST->gentemp(INT_TYPE);
if($1->loc->type->name != "int"){
quadsArray->emit(MULT,$$->loc,$3->loc,$$->type->getSize());
$$->array = $1->loc;
}
else
{
quadsArray->emit(MULT,$$->loc,$3->loc,$$->type->getSize());
quadsArray->emit(PLUS,($$->loc),($1->loc),$$->loc);
}
}
| postfix_expression '(' ')'
{
$$ = new Expression();
//cout<<"I was here\n";
SymbolTableRow* id = currentST->lookup(($1->loc)->name);
if(!isCallable($1->type)){
yyerror("called object is not a function");
}
else{
if($1->array != NULL){
SymbolTableRow *srow = currentST->gentemp($1->type);
/*if($1->array->type->name == "pointer" && 0)
{
SymbolTableRow* tmp = currentST->gentemp($1->array->type);
quadsArray->emit(PLUS,tmp,$1->array,$1->loc);
quadsArray->emit(ASSIGNVALUE,srow,tmp);
}
else
{*/
quadsArray->emit(ASSIGNARR,srow,($1->array),($1->loc));
//}
$$ = callFunction(srow,NULL);
}
else{
//cout<<"I was here\n";
$$ = callFunction(id,NULL);
}
}
}
| postfix_expression '(' argument_expression_list ')'
{
$$ = new Expression();
SymbolTableRow* id = currentST->lookup($1->loc->name);
if(!isCallable($1->type)){
$1->type->print(cout);
yyerror("called object is not a function");
}
else{
if($1->array != NULL){
SymbolTableRow *srow = currentST->gentemp($1->type);
/*if($1->array->type->name == "pointer" && 0)
{
SymbolTableRow* tmp = currentST->gentemp($1->array->type);
quadsArray->emit(PLUS,tmp,$1->array,$1->loc);
quadsArray->emit(ASSIGNVALUE,srow,tmp);
}
else
{*/
quadsArray->emit(ASSIGNARR,srow,($1->array),($1->loc));
//}
$$ = callFunction(srow,$3);
}
else{
//cout<<"I was here\n";
$$ = callFunction(id,$3);
}
}
}
| postfix_expression '.' IDENTITY
{
/* Empty action as structures not handled */
}
| postfix_expression ARROW_OP IDENTITY
{
/* Empty action as structures not handled */
}
| postfix_expression INCREMENT_OP
{
/**
*
* As from the specification we have the following constraint over the operand:
* Constraint : "The operand of the postfix increment or decrement operator shall
* have qualified or unqualified real or pointer type and shall be a modifiable lvalue"
* Hence it has to bec checked that the type of $1 is one of int,double,char,pointer and
* is indeed a non-const variable
* Since the correctness of program is assumed the check is not done
* Semantics : "The result of the postfix ++ operator is the value of the operand.
* After the result is obtained, the value of the operand is incremented.
* (That is, the value 1 of the appropriate type is added to it.)"
*
*/
$$ = new Expression();
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
int one = $1->type->getIdentity();
if($1->array != 0)
{
quadsArray->emit(ASSIGNARR,$$->loc,$1->array,$1->loc);
SymbolTableRow *symrow = currentST->gentemp($1->type);
quadsArray->emit(PLUS,symrow,$$->loc,one);
quadsArray->emit(ARRASSIGN,$1->array,$1->loc,symrow);
}
else{
quadsArray->emit(COPY,($$->loc),($1->loc));
quadsArray->emit(PLUS,($1->loc),($1->loc),one);
}
}
| postfix_expression DECREMENT_OP
{
/**
* Same as post increment operator
*/
$$ = new Expression();
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
int one = $1->type->getIdentity();
if($1->array != 0)
{
quadsArray->emit(ASSIGNARR,$$->loc,$1->array,$1->loc);
SymbolTableRow *symrow = currentST->gentemp($1->type);
quadsArray->emit(MINUS,symrow,$$->loc,one);
quadsArray->emit(ARRASSIGN,$1->array,$1->loc,symrow);
}
else{
quadsArray->emit(COPY,($$->loc),($1->loc));
quadsArray->emit(MINUS,($1->loc),($1->loc),one);
}
}
| '(' type_name ')' '{' initializer_list '}'
{
/* Empty action as not handled */
}
| '(' type_name ')' '{' initializer_list ',' '}'
{
/* Empty action as not handled */
}
;
argument_expression_list: assignment_expression
{
/**
Type check and compatibility to be handled in the function call time
*/
$$ = new ArgList();
$$->args.push_back($1);
}
| argument_expression_list ',' assignment_expression
{
$1->args.push_back($3);
$$ = $1;
}
;
unary_expression: postfix_expression
{
$$ = $1;
}
| INCREMENT_OP unary_expression
{
/**
*
* As from the specification we have the following constraint over the operand:
* Constraint : "The operand of the prefix increment or decrement operator shall
* have qualified or unqualified real or pointer type and shall be a modifiable lvalue"
*
* Hence it has to be checked that the type of $1 is one of int,double,char,pointer and
* is indeed a non-const variable
* Since the correctness of program is assumed the check is not done
*
* Semantics : "The result of the postfix ++ operator is the value of the operand.
* After the result is obtained, the value of the operand is incremented.
* (That is, the value 1 of the appropriate type is added to it.)"
*
*/
$$ = new Expression();
$$->loc = currentST->gentemp($2->type);
$$->type = $2->type;
int one = $2->type->getIdentity();
if($2->array != 0)
{
quadsArray->emit(ASSIGNARR,$$->loc,$2->array,$2->loc);
quadsArray->emit(PLUS,$$->loc,$$->loc,one);
quadsArray->emit(ARRASSIGN,$2->array,$2->loc,$$->loc);
}
else{
quadsArray->emit(PLUS,($2->loc),($2->loc),one);
quadsArray->emit(COPY,($$->loc),($2->loc));
}
}
| DECREMENT_OP unary_expression
{
/**
* Same as pre increment operator
*/
$$ = new Expression();
$$->loc = currentST->gentemp($2->type);
$$->type = $2->type;
int one = $2->type->getIdentity();
if($2->array != 0)
{
quadsArray->emit(ASSIGNARR,$$->loc,$2->array,$2->loc);
quadsArray->emit(MINUS,$$->loc,$$->loc,one);
quadsArray->emit(ARRASSIGN,$2->array,$2->loc,$$->loc);
}
else{
quadsArray->emit(MINUS,($2->loc),($2->loc),one);
quadsArray->emit(COPY,($$->loc),($2->loc));
}
}
| '&' cast_expression
{
$$ = new Expression();
Type *t = $2->type;
t = new Pointer(t);
$$->loc = currentST->gentemp(t);
$$->type = t;
if($2->array == NULL){
quadsArray->emit(ASSIGNADDRESS,$$->loc,$2->loc);
}
else{
quadsArray->emit(PLUS,$$->loc,$2->array,$2->loc);
//cout<<"ha"<<$2->loc->name<<endl;
}
}
| '*' cast_expression
{
$$ = new Expression();
Type *t = $2->type;
Pointer *p = (Pointer*)t;
t = p->pointeeType;
$$->type = t;
t = new Array(1,t);
$$->loc = currentST->gentemp(INT_TYPE);
$$->array = $2->loc;
quadsArray->emit(COPY,$$->loc,0);
}
| '+' cast_expression
{
/**
* Arithmetic Type : Integer and floating
* Constraint : The operand of the unary + or - operator shall have arithmetic type
* Semantics : The result of the unary + operator is the value of its (promoted) operand.
* The integer promotions are performed on the operand, and the result has the promoted type.
*/
/**
* Basically convert bool to int, promote char to int, else do nothing
*/
$2->convertBoolToInt();
typecheck($2,UPLUS);
$$ = $2;
}
| '-' cast_expression
{
/**
* Constraint : The operand of the unary + or - operator shall have arithmetic type
* Semantics : The result of the unary - operator is the negative of its (promoted) operand.
* The integer promotions are performed on the operand, and the result has the promoted type
*/
/**
* Basically convert bool to int, promote char to int, else do nothing
*/
$$ = new Expression();
if($2->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($2->type);
tmp->type = $2->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($2->array),($2->loc));
$2 = tmp;
}
$2->convertBoolToInt();
typecheck($2,UMINUS);
$$->loc = currentST->gentemp($2->type);
$$->type = $2->type;
quadsArray->emit(UMINUS,($$->loc),($2->loc));
}
| '~' cast_expression
{
/**
* Constraint : The operand of the ~ operator shall have integer type
* Semantics : The result of the ~ operator is the bitwise complement of its (promoted)
* operand (that is, each bit in the result is set if and only if the corresponding bit
* in the converted operand is not set). The integer promotions are performed on the
* operand, and the result has the promoted type.
*/
/**
* Basically convert bool to int, promote char to int, else do nothing
*/
$$ = new Expression();
if($2->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($2->type);
tmp->type = $2->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($2->array),($2->loc));
$2 = tmp;
}
$2->convertBoolToInt();
typecheck($2,COMPLEMENT);
$$->loc = currentST->gentemp($2->type);
$$->type = $2->type;
quadsArray->emit(COMPLEMENT,($$->loc),($2->loc));
}
| '!' cast_expression
{
/**
* Scalar Type : Arithmetic and pointer type
* Constraint : The operand of the ! operator, scalar type.
* Semantics : The result of the logical negation operator ! is 0
* if the value of its operand compares unequal to 0, 1 if the value
* of its operand compares equal to 0. The result has type int.
* The expression !E is equivalent to (0==E).
**/
/**
* Here a implicit bool type expression is generated which will
* anyway be converted to int if required
*/
if($2->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($2->type);
tmp->type = $2->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($2->array),($2->loc));
$2 = tmp;
}
if($2->type->isScalarType() && $2->type->name != "bool"){
quadsArray->emit(OP_GOTO,quadsArray->getNextIndex()+1);
$2->convertToBool();
}
$2->swapLists();
$$ = $2;
}
| SIZEOF unary_expression
{
$$ = new Expression();
$$->loc = currentST->gentemp(INT_TYPE,($2->type)->getSize(),CONSTANT_TEMP);
$$->type = INT_TYPE;
quadsArray->emit(COPY,($$->loc),($2->type)->getSize());
}
| SIZEOF '(' type_name ')'
{
$$ = new Expression();
$$->loc = currentST->gentemp(INT_TYPE,$3->getSize(),CONSTANT_TEMP);
$$->type = INT_TYPE;
quadsArray->emit(COPY,($$->loc),$3->getSize());
}
;
cast_expression: unary_expression
{
$$ =$1;
}
| '(' type_name ')' cast_expression
{
$$ = new Expression();
//TODO:: what is typename and how is it handled
}
;
multiplicative_expression: cast_expression
{
if($1->array != NULL){
$$ = new Expression();
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
/*if($1->array->type->name == "pointer" && 0)
{
SymbolTableRow* tmp = currentST->gentemp($1->array->type);
quadsArray->emit(PLUS,tmp,$1->array,$1->loc);
quadsArray->emit(ASSIGNVALUE,$$->loc,tmp);
}
else
{*/
quadsArray->emit(ASSIGNARR,$$->loc,($1->array),($1->loc));
//}
}
else
{
$$ = $1;
}
}
| multiplicative_expression '*' cast_expression
{
/**
* Constraint for multiplicatine expression :
* Each of the operands shall have arithmetic type.
* The operands of the % operator shall have integer type.
*
* Note : Constraints not checked due to assumption of correctness of code
*
*/
$$ = new Expression();
if($3->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($3->type);
tmp->type = $3->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($3->array),($3->loc));
$3 = tmp;
}
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,MULT);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(MULT,($$->loc),($1->loc),($3->loc));
}
| multiplicative_expression '/' cast_expression
{
$$ = new Expression();
if($3->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($3->type);
tmp->type = $3->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($3->array),($3->loc));
$3 = tmp;
}
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,DIV);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(DIV,($$->loc),($1->loc),($3->loc));
}
| multiplicative_expression '%' cast_expression
{
$$ = new Expression();
if($3->array != NULL){
Expression* tmp = new Expression();
tmp->loc = currentST->gentemp($3->type);
tmp->type = $3->type;
quadsArray->emit(ASSIGNARR,tmp->loc,($3->array),($3->loc));
$3 = tmp;
}
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,MOD);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(MOD,($$->loc),($1->loc),($3->loc));
}
;
additive_expression: multiplicative_expression
{
$$ = $1;
}
| additive_expression '+' multiplicative_expression
{
/**
* Constraint : For addition, either both operands shall have arithmetic type,
* or one operand shall be a pointer to an object type and the other
* shall have integer type. (Incrementing is equivalent to adding 1.)
* TODO : Check for the sematics of pointer and integr addition
*/
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,PLUS);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
if($1->type->name == "pointer")
{
SymbolTableRow *srow = currentST->gentemp($3->type);
quadsArray->emit(MULT,srow,srow,$1->type->getIdentity());
quadsArray->emit(PLUS,($$->loc),($1->loc),srow);
}
else if($3->type->name == "pointer")
{
SymbolTableRow *srow = currentST->gentemp($1->type);
quadsArray->emit(MULT,srow,srow,$3->type->getIdentity());
quadsArray->emit(PLUS,($$->loc),($3->loc),srow);
}
else
{
quadsArray->emit(PLUS,($$->loc),($1->loc),($3->loc));
}
}
| additive_expression '-' multiplicative_expression
{
/**
* Constraint : For subtraction, one of the following shall hold:
* -- both operands have arithmetic type;
* -- both operands are pointers to qualified or
* unqualified versions of compatible object types; or
* -- the left operand is a pointer to an object type and the
* right operand has integer type.
* TODO : Check for the semantics of subtracting interger from a pointer
*
*
*/
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();;
typecheck($1,$3,MINUS);
if($1->type->name == "pointer" && $3->type->name == "pointer")
{
$$->loc = currentST->gentemp(INT_TYPE);
$$->type = INT_TYPE;
quadsArray->emit(MINUS,$$->loc,$1->loc,$3->loc);
quadsArray->emit(DIV,$$->loc,$$->loc,$1->type->getIdentity());
}
else if($3->type->name == "pointer")
{
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
SymbolTableRow *srow = currentST->gentemp($1->type);
quadsArray->emit(MULT,srow,srow,$3->type->getIdentity());
quadsArray->emit(MINUS,($$->loc),($3->loc),srow);
}
else
{
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(MINUS,($$->loc),($1->loc),($3->loc));
}
}
;
shift_expression: additive_expression
{
$$ = $1;
}
| shift_expression LEFT_SHIFT_OP additive_expression
{
/**
* Constraint : Each of the operands shall have integer type.
*
*/
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,SLL);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(SLL,($$->loc),($1->loc),($3->loc));
}
| shift_expression RIGHT_SHIFT_OP additive_expression
{
/**
* Semantic : The result of E1 >> E2 is E1 right-shifted E2 bit positions.
* If E1 has an unsigned type or if E1 has a signed type and a
* nonnegative value, the value of the result is the integral
* part of the quotient of E1 / 2 E2 . If E1 has a signed type
* and a negative value, the resulting value is implementation-defined.
*
*/
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,SRA);
$$->loc = currentST->gentemp($1->type);
$$->type = $1->type;
quadsArray->emit(SRA,($$->loc),($1->loc),($3->loc));
}
;
relational_expression: shift_expression
{
$$ = $1;
}
| relational_expression '<' shift_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFLessGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFLessGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
| relational_expression '>' shift_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFGrtGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFGrtGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
| relational_expression LESS_EQUAL_OP shift_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFLessEqGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFLessEqGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
| relational_expression GREATER_EQUAL_OP shift_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFGrtEqGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFGrtEqGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
;
equality_expression: relational_expression
{
$$ = $1;
}
| equality_expression EQUALITY_OP relational_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFLogEqGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFLogEqGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
| equality_expression NOTEQUAL_OP relational_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,IFNotEqGOTO);
$$->loc = NULL;
$$->type = BOOL_TYPE;
$$->truelist = makelist(quadsArray->getNextIndex());
quadsArray->emit(IFNotEqGOTO,-1,($1->loc),($3->loc));
$$->falselist = makelist(quadsArray->getNextIndex());
quadsArray->emit(OP_GOTO,-1);
}
;
AND_expression: equality_expression
{
$$ = $1;
}
| AND_expression '&' equality_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,BitwiseAND);
$$->type = $1->type;
$$->loc = currentST->gentemp($$->type);
quadsArray->emit(BitwiseAND,($$->loc),($1->loc),($3->loc));
}
;
exclusive_OR_expression: AND_expression
{
$$ = $1;
}
| exclusive_OR_expression '^' AND_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,BitwiseXOR);
$$->type = $1->type;
$$->loc = currentST->gentemp($$->type);
quadsArray->emit(BitwiseXOR,($$->loc),($1->loc),($3->loc));
}
;
inclusive_OR_expression: exclusive_OR_expression
{
$$ =$1;
}
| inclusive_OR_expression '|' exclusive_OR_expression
{
$$ = new Expression();
$1->convertBoolToInt();
$3->convertBoolToInt();
typecheck($1,$3,BitwiseOR);
$$->type = $1->type;
$$->loc = currentST->gentemp($$->type);
quadsArray->emit(BitwiseOR,($$->loc),($1->loc),($3->loc));
}
;
logical_AND_expression: inclusive_OR_expression
{
$$ = $1;
}
| logical_AND_expression N LOGICAL_AND_OP M inclusive_OR_expression
{
$$ = new Expression();
if($5->type->isScalarType() && $5->type->name != "bool")
{
quadsArray->emit(OP_GOTO,quadsArray->getNextIndex()+1);
$5->convertToBool();
}
if($1->type->isScalarType() && $1->type->name != "bool"){
quadsArray->backpatch($2->nextlist,quadsArray->getNextIndex()+1);
$1->convertToBool();
}