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parser.y
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parser.y
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%define parse.error verbose
%code provides{
typedef union{
int ival; /* Value of integer values */
double rval; /* Value of real values*/
char *string; /* Value string */
char type[255];
SymTableNode *ident; /* Value of a IDENTIFIER */
} _YYSTYPE;
}
%code requires{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "symtable.h"
#include "misc.h"
#include "ast.h"
#include "semantic.h"
}
%union {
char string[255];
int token_type;
struct boolean_expression boolean_expression;
struct expression expression;
struct statement statement;
struct ifstatement ifstatement;
}
%token ENTRY
%token LOOP "loop"
%token IF "?"
%token ELSE ":"
%token READ
%token WRITE
%token BREAK "break"
%token CONTINUE "continue"
%token <expression> ID
%type <string> type_declare
%type <string> just_declare
/* %type <string> struct_fields */
%type <string> srt
%type <string> crt
%token <string> FUNCTIONDECLARE
%token <string> NUMBERDECLARE
%token <string> STRINGDECLARE
%token <string> CONSTDECLARE
%token <string> BOOLEENDECLARE
%token <string> STRUCTTYPEDECLARE
%token <string> STRUCTDECLARE
%token <string> TABLEDECLARE
%token <string> POINTERDECLARE
%token ADDRESSVALUE "&"
%token POINTERVALUE "@"
%token OPENHOOK "{"
%token <token_type> CLOSEHOOK "}"
%token OPENPARENTHESIS "("
%token CLOSEPARENTHESIS ")"
%token OPENBRACKET "["
%token CLOSEBRACKET "]"
%token EQUAL "="
%token NONEQUAL "!="
%token AND "&&"
%token OR "||"
%token NON "!"
%token INFERIOR "<"
%token SUPERIOR ">"
%token INFERIOREQUAL "<="
%token SUPERIOREQUAL ">="
%token ADD "+"
%token SUB "-"
%token MULT "*"
%token DIV "/"
%token MOD "%"
%token POWER "^"
%token DOT "."
%token COMMA ","
%token SEMICOLON ";"
%token ASSIGNMENT "<-"
%token RETURN "->"
%token INTEGER
%token REALNUMBER
%token STRING
%token TRUE
%token FALSE
// special token
%type <token_type> M;
%type <statement> statement bloc N ifstmtonly;
%type <ifstatement> ifstmt elsestmt;
%type <expression> expression;
%type <expression> var_exp;
// Lof
//Comparison
%left COMMA
%nonassoc ASSIGNMENT
%left OR
%left AND
%left NON
%nonassoc EQUAL NONEQUAL INFERIOR SUPERIOR INFERIOREQUAL SUPERIOREQUAL
%left ADD SUB
%left MULT DIV MOD
%nonassoc ADDRESSVALUE POINTERVALUE
%left DOT OPENBRACKET CLOSEBRACKET
%left POWER
%left OPENPARENTHESIS
%type <string> ret
%{
extern int yylineno;
extern int yyleng;
extern FILE *yyin, *yyout;
char* currentFileName;
extern int yylex();
void yysuccess();
void yyerror();
void showLexicalError();
GlobalSymTable* gSymT; //Our global table of symbols
SymTable* symt; //Current table of symboles (used by scanner.l as well)
char save[50];
int currentColumn = 1;
int showsuccess = 0;
// flag for entering loops
int flag=0;
// flag for assignment statements
bool flag_assign=false;
_YYSTYPE _yylval;
/* Set of instruction of the current statement */
quadruplets_node quads[MAXCODE];
int currentInstruction = 0;
// temp name storage
char tempnames[255][255]; int indicator;
struct jump_indices* breaklist_stack[100]; int breaklist_stack_top = -1;
struct jump_indices* continuelist_stack[100]; int continuelist_stack_top = -1;
struct statement currentBloc;
struct jump_indices *loop_breaklist;
%}
%%
underscore: %empty
| underscore func
| error func {yyerrok;}
;
func: FUNCTIONDECLARE ret ID {
_yylval.ident->symType = FUNCTIONDECLARE;
set_attr(_yylval.ident, "typeretour", $<string>2);
} OPENPARENTHESIS params_eps CLOSEPARENTHESIS OPENHOOK bloc CLOSEHOOK {
insertNewGlobalEntry(gSymT, symt); symt = allocateSymTable();
yysuccess(1,"function ended.");
fprintf(stdout, "\n" MAGENTA "========= Quadruplets =========" RESET "\n\n");
for(int i = 0; i < currentInstruction; i++){
print_quadruplets_node(&quads[i]);
}
printf("\nNB INST: %d\n", currentInstruction);
print_tempnames();
}
ret: %empty {strcpy($$ , "void");}
| srt // simple return type
| crt // complex return type
;
// just for simplicity
srt: NUMBERDECLARE {strcpy($$ , _yylval.type); } | STRINGDECLARE {strcpy($$ , _yylval.type); } | BOOLEENDECLARE {strcpy($$ , _yylval.type); } ;
crt: TABLEDECLARE {strcpy($$ , _yylval.type); };
params_eps: %empty
| params
;
params: param comma_params;
comma_params: %empty
| COMMA params
;
param: type_declare ID { if(_yylval.ident == NULL) yyerror_semantic("ID already declared!"); else set_attr(_yylval.ident, "type", $1); } ;
bloc: bloc statement M {
yysuccess(1, "Block.");
if ($2.nextlist != NULL){
backpatch(quads, currentInstruction+1, $2.nextlist, $3);
$$.nextlist = $2.nextlist;
}else{
$$.nextlist = NULL;
}
if ($1.breaklist != NULL || $2.breaklist != NULL){
struct jump_indices* temp = merge($1.breaklist, $2.breaklist);
breaklist_stack[breaklist_stack_top] = merge(temp, breaklist_stack[breaklist_stack_top]);
}else{
$$.breaklist = NULL;
}
if ($1.continuelist != NULL || $2.continuelist != NULL){
struct jump_indices* temp = merge($1.continuelist, $2.continuelist);
continuelist_stack[continuelist_stack_top] = merge(temp, continuelist_stack[continuelist_stack_top]);
}else{
$$.continuelist = NULL;
}
}
| %empty {
yysuccess(1, "emptyness");
$$.breaklist = NULL;
$$.nextlist = NULL;
$$.continuelist = NULL;
}
;
statement: declare SEMICOLON {
$$.nextlist = NULL;
}
| assign SEMICOLON {
}
| inc LOOP M OPENPARENTHESIS expression CLOSEPARENTHESIS OPENHOOK {flag++;} M bloc M {flag--;} CLOSEHOOK {
if (!$5.is_boolean){yyerror_semantic("Expression in loop() must be boolean! "); return;}
backpatch(quads, currentInstruction+1, $10.nextlist, $3);
backpatch(quads, currentInstruction+1, $5.boolean_expression.truelist, $9);
$$.nextlist = $5.boolean_expression.falselist;
backpatch(quads, currentInstruction+1, breaklist_stack[breaklist_stack_top], $11+1);
backpatch(quads, currentInstruction+1, continuelist_stack[continuelist_stack_top], $3);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand1_val->label = $3;
operand2_val->empty = 1;
result_val->empty = 1;
// gen quad
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
create_operand(Labels, operand1_val), create_operand(Empty,operand2_val), create_operand(Empty, result_val));
quads[currentInstruction] = *quad;
currentInstruction++;
breaklist_stack_top--;
continuelist_stack_top--;
}
|inc LOOP M OPENPARENTHESIS assign SEMICOLON M expression SEMICOLON M assign M CLOSEPARENTHESIS OPENHOOK {flag ++;} M bloc M {flag--;} CLOSEHOOK{
if (!$8.is_boolean){yyerror_semantic("Expression in loop() must be boolean! ");}
backpatch(quads, currentInstruction+1, $17.nextlist, $7);
backpatch(quads, currentInstruction+1, $8.boolean_expression.truelist, $16);
$$.nextlist = $8.boolean_expression.falselist;
backpatch(quads, currentInstruction+1, $17.continuelist, $18);
backpatch(quads, currentInstruction+1, loop_breaklist, $18+1);
loop_breaklist = NULL;
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand1_val->label = $7;
operand2_val->empty = 1;
result_val->empty = 1;
// migrate instructions
migrate(quads, $10, $12-1, $16, currentInstruction-1);
// gen quad
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
create_operand(Labels, operand1_val), create_operand(Empty,operand2_val), create_operand(Empty, result_val));
quads[currentInstruction] = *quad;
currentInstruction++;
breaklist_stack_top--;
continuelist_stack_top--;
}
| inc LOOP M OPENPARENTHESIS init_declare SEMICOLON M expression SEMICOLON M assign M CLOSEPARENTHESIS OPENHOOK {flag++;} M bloc M {flag--;} CLOSEHOOK {
if (!$8.is_boolean){yyerror_semantic("Expression in loop() must be boolean! ");}
backpatch(quads, currentInstruction+1, $17.nextlist, $7);
backpatch(quads, currentInstruction+1, $8.boolean_expression.truelist, $16);
$$.nextlist = $8.boolean_expression.falselist;
backpatch(quads, currentInstruction+1, $17.continuelist, $18);
backpatch(quads, currentInstruction+1, loop_breaklist, $18+1);
loop_breaklist = NULL;
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand1_val->label = $7;
operand2_val->empty = 1;
result_val->empty = 1;
// migrate instructions
migrate(quads, $10, $12-1, $16, currentInstruction-1);
// gen quad
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
create_operand(Labels, operand1_val), create_operand(Empty,operand2_val), create_operand(Empty, result_val));
quads[currentInstruction] = *quad;
currentInstruction++;
breaklist_stack_top--;
continuelist_stack_top--;
}
| ifstmtonly {
$$.nextlist = $1.nextlist;
loop_breaklist = merge(loop_breaklist, $1.breaklist);
}
| ifstmt elsestmt {
$$.nextlist = $2.nextlist;
loop_breaklist = merge(loop_breaklist, merge($2.breaklist, $1.breaklist));
$$.continuelist = merge($1.continuelist, $2.continuelist) ;
}
| BREAK SEMICOLON {
if(flag <= 0) yyerror_semantic("Break statement not allowed outside a loop.");
else {
yysuccess(1, "Break statement");
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand1_val->label = -1;
operand2_val->empty = 1;
result_val->empty = 1;
// gen quad
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
create_operand(Labels, operand1_val), create_operand(Empty,operand2_val), create_operand(Empty, result_val));
quads[currentInstruction] = *quad;
$$.breaklist = makelist(currentInstruction);
currentInstruction++;
}
}
| CONTINUE SEMICOLON {
if(flag <= 0) yyerror_semantic("Continue statement not allowed outside a loop.");
else {
yysuccess(1, "Continue statement");
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand1_val->label = -1;
operand2_val->empty = 1;
result_val->empty = 1;
// gen quad
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
create_operand(Labels, operand1_val), create_operand(Empty,operand2_val), create_operand(Empty, result_val));
quads[currentInstruction] = *quad;
$$.continuelist = makelist(currentInstruction);
currentInstruction++;
}
}
;
type_declare: NUMBERDECLARE {strcpy($$ , _yylval.type); }
| STRINGDECLARE {strcpy($$ , _yylval.type);}
| BOOLEENDECLARE {strcpy($$ , _yylval.type); }
| TABLEDECLARE {strcpy($$ , _yylval.type); }
;
just_declare: type_declare ID {
if(_yylval.ident == NULL) yyerror_semantic("ID already declared!");
else set_attr(_yylval.ident, "type", $1);
}
;
init_declare: just_declare ASSIGNMENT {flag_assign=true;} expression {flag_assign=false;} {
char sym[255];
char val[255];
bool type_checked=false;
// get symbole from symtable
strcpy(sym, symt->tail->symName);
printf("Symbol declared recently: %s\n", sym);
AttrNode *node = symt->tail->rootAttr;
while(node != NULL){
if(strcmp(node->name,"type")== 0){
if($4.is_boolean){
if(strcmp(node->val,"boolean")== 0) {
type_checked=true; yysuccess(1,"boolean checked");
}
else{yyerror_semantic("Type mismatch"); return;}
}
else if($4.is_string){
if( strcmp(node->val,"string")== 0){type_checked=true;yysuccess(1,"string checked");}else{yyerror_semantic("type mismatch");}}
else if(strcmp(node->val,"number")== 0){type_checked=true;yysuccess(1,"number checked");}
else{yyerror_semantic("Type mismatch"); return;}
}
node=node->next;
}
if(type_checked==1){
if ($4.is_number){
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
// operand1 management
if ($4.arithmetic_expression.is_litteral){
operand1_val->integer = $4.arithmetic_expression.value;
operand1 = create_operand(Integers , operand1_val);
}else{
// strcpy(operand1_val->variable, $4.arithmetic_expression.sym);
// fetch symbole from symtable normally
strcpy(operand1_val->variable, tempnames[indicator-1]);
operand1 = create_operand(Variable , operand1_val);
}
operand2_val->empty = true; // or 1
operand2 = create_operand(Empty , operand1_val);
strcpy(result_val->variable, sym);
result = create_operand(Variable, result_val);
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[AFFECT],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}}
}
/* | just_declare ASSIGNMENT OPENBRACKET values_eps CLOSEBRACKET */
;
declare: just_declare
| init_declare
;
// TODO change this to var_exp
assign: ID {
if(!checkif_localsymbolexists(_yylval.ident)) return;
if(_yylval.ident == NULL) {
strcpy($<string>$, save);
} else {
strcpy($<string>$, _yylval.ident->symName);
}
} ASSIGNMENT expression {
char sym[255];
char val[255];
bool type_checked=false;
// get symbole from symtable
AttrNode *node = lookup(symt, save)->rootAttr;
while(node != NULL){
if(strcmp(node->name,"type")== 0){
if($4.is_boolean){
if(strcmp(node->val,"boolean")== 0) {
type_checked=true; yysuccess(1,"boolean checked");
}
else{yyerror_semantic("Type mismatch"); return;}
}
else if($4.is_string){
if( strcmp(node->val,"string")== 0){ type_checked=true;yysuccess(1,"string checked");}
else{yyerror_semantic("type mismatch"); return;}
}
else if(strcmp(node->val,"number")== 0){ type_checked=true;yysuccess(1,"number checked");}
else{yyerror_semantic("Type mismatch"); return;}
}
node=node->next;
}
if(type_checked==1){
if ($4.is_number){
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
// operand1 management
if ($4.arithmetic_expression.is_litteral){
operand1_val->integer = $4.arithmetic_expression.value;
operand1 = create_operand(Integers , operand1_val);
}else{
// strcpy(operand1_val->variable, $4.arithmetic_expression.sym);
// fetch symbole from symtable normally
strcpy(operand1_val->variable, tempnames[indicator-1]);
operand1 = create_operand(Variable , operand1_val);
}
operand2_val->empty = true; // or 1
operand2 = create_operand(Empty , operand1_val);
strcpy(result_val->variable, $<string>2);
// printf("ID: %s\n", $<string>2);
result = create_operand(Variable, result_val);
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[AFFECT],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}
}
}
/* | ADDRESSVALUE var ASSIGNMENT expression
| POINTERVALUE var ASSIGNMENT expression */
| var_exp ASSIGNMENT expression
;
ifstmtonly: IF OPENPARENTHESIS expression CLOSEPARENTHESIS OPENHOOK M bloc CLOSEHOOK {
if (!$3.is_boolean){yyerror_semantic("Expression in ?() must be boolean!"); return;}
yysuccess(1,"if stmt only.");
// Check if <expression> is boolean, otherwise throw a semantic error
backpatch(quads,currentInstruction+1, $3.boolean_expression.truelist, $6);
$$.nextlist = merge($7.nextlist, $3.boolean_expression.falselist);
if ($7.breaklist != NULL){
$$.breaklist = $7.breaklist;
}else{
$$.breaklist = NULL;
}
if ($7.continuelist != NULL){
$$.continuelist = $7.continuelist;
}else{
$$.continuelist = NULL;
}
}
ifstmt: IF OPENPARENTHESIS expression CLOSEPARENTHESIS OPENHOOK M bloc CLOSEHOOK {
$$.nextlist = $7.nextlist;
$$.boolean_expression.truelist = $3.boolean_expression.truelist;
$$.boolean_expression.falselist = $3.boolean_expression.falselist;
$$.m1 = $6;
if ($7.breaklist != NULL){
$$.breaklist = $7.breaklist;
}else{
$$.breaklist = NULL;
}
if ($7.continuelist != NULL){
$$.continuelist = $7.continuelist;
}else{
$$.continuelist = NULL;
}
}
elsestmt: N ELSE M OPENPARENTHESIS CLOSEPARENTHESIS OPENHOOK bloc CLOSEHOOK {
yysuccess(1,"else stmt.");
backpatch(quads, currentInstruction+1, ($<ifstatement>0).boolean_expression.truelist, ($<ifstatement>0).m1); // backpatch it to M1.inst
backpatch(quads, currentInstruction+1, ($<ifstatement>0).boolean_expression.falselist, $3); // backpatch it toM2.inst
struct jump_indices* temp = merge(($<ifstatement>0).nextlist, $1.nextlist);
$$.nextlist = merge(temp, $7.nextlist);
$$.breaklist = $7.breaklist;
};
//General formula for experession
expression:
OPENPARENTHESIS expression CLOSEPARENTHESIS {
if ($2.is_boolean){
$$.is_boolean = true;
$$.boolean_expression.falselist = $2.boolean_expression.falselist;
$$.boolean_expression.truelist = $2.boolean_expression.truelist;
}
else if($2.arithmetic_expression.is_litteral){
$$.arithmetic_expression.value = $2.arithmetic_expression.value;
$$.arithmetic_expression.is_litteral = $2.arithmetic_expression.is_litteral;
$$.is_number = true;
}
else if($2.is_string){
$$.is_string = true;
}
else if($2.is_number) {
$$.is_number = true;
strcpy($$.arithmetic_expression.sym, tempnames[indicator-1]);
}
else{
// is expression
$$.is_boolean = false;
$$.is_string = false;
$$.is_number = false;
}
}
| OPENPARENTHESIS error CLOSEPARENTHESIS { /* stop code */ return; }
| NON expression {
if ($2.is_boolean){
$$.is_boolean = true;
$$.boolean_expression.truelist = $2.boolean_expression.falselist;
$$.boolean_expression.falselist = $2.boolean_expression.truelist;
}
else{
yyerror("Expression after ! needs to be boolean!");
}
}
| expression OR M expression{
if ($1.is_boolean && $4.is_boolean){
$$.is_boolean = true;
backpatch(quads ,currentInstruction+1, $1.boolean_expression.falselist, $3);
$$.boolean_expression.truelist = merge($1.boolean_expression.truelist, $4.boolean_expression.truelist);
$$.boolean_expression.falselist = $4.boolean_expression.falselist;
}
else if (!$1.is_boolean){
yyerror("Expression before || needs to be boolean!");
}
else{
yyerror("Expression after || needs to be boolean!");
}
}
| expression AND M expression {
if ($1.is_boolean && $4.is_boolean){
$$.is_boolean = true;
backpatch(quads, currentInstruction+1,$1.boolean_expression.truelist, $3);
$$.boolean_expression.truelist = $4.boolean_expression.truelist;
$$.boolean_expression.falselist = merge($1.boolean_expression.falselist, $4.boolean_expression.falselist);
}
else if (!$1.is_boolean){
yyerror("Expression before && needs to be boolean!");
}
else{
yyerror("Expression after && needs to be boolean!");
}
}
| expression EQUAL expression{
if($1.is_boolean && $3.is_boolean){$$.is_boolean = true;}
else if ($1.is_string && $3.is_string){$$.is_boolean = true;}
else if($1.is_number && $3.is_number) {
$$.is_boolean = true;
$$.boolean_expression.truelist = makelist(currentInstruction);
$$.boolean_expression.falselist = makelist(currentInstruction+1);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
operand1_val->label = -1;
operand1 = create_operand(Labels, operand1_val);
// operand1 management
if ($1.arithmetic_expression.is_litteral){
operand2_val->integer = $1.arithmetic_expression.value;
operand2 = create_operand(Integers , operand2_val);
}else{
strcpy(operand2_val->variable, $1.arithmetic_expression.sym);
operand2 = create_operand(Variable , operand2_val);
}
// operand2 management
if ($3.arithmetic_expression.is_litteral){
result_val->integer = $3.arithmetic_expression.value;
result = create_operand(Integers , result_val);
}else{
strcpy(result_val->variable, $3.arithmetic_expression.sym);
result = create_operand(Variable , result_val);
}
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BE],
operand1, operand2, result);
// indicator++;
quads[currentInstruction] = *quad;
currentInstruction++;
operand1_val->label = -1; operand1=create_operand(Labels, operand1_val);
operand2_val->empty = 1; operand2=create_operand(Empty, operand1_val);
result_val->empty = 1; result=create_operand(Empty, operand1_val);
quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}
else{yyerror_semantic(" = takes operands of same type"); return;}
}
| expression NONEQUAL expression{
if($1.is_boolean && $3.is_boolean){$$.is_boolean = true;}
else if ($1.is_string && $3.is_string){$$.is_boolean = true;}
else if($1.is_number && $3.is_number){
$$.is_boolean = true;
$$.boolean_expression.truelist = makelist(currentInstruction);
$$.boolean_expression.falselist = makelist(currentInstruction+1);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
operand1_val->label = -1;
operand1 = create_operand(Labels, operand1_val);
// operand1 management
if ($1.arithmetic_expression.is_litteral){
operand2_val->integer = $1.arithmetic_expression.value;
operand2 = create_operand(Integers , operand2_val);
}else{
strcpy(operand2_val->variable, $1.arithmetic_expression.sym);
operand2 = create_operand(Variable , operand2_val);
}
// operand2 management
if ($3.arithmetic_expression.is_litteral){
result_val->integer = $3.arithmetic_expression.value;
result = create_operand(Integers , result_val);
}else{
strcpy(result_val->variable, $3.arithmetic_expression.sym);
result = create_operand(Variable , result_val);
}
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BNE],
operand1, operand2, result);
// indicator++;
quads[currentInstruction] = *quad;
currentInstruction++;
operand1_val->label = -1; operand1=create_operand(Labels, operand1_val);
operand2_val->empty = 1; operand2=create_operand(Empty, operand1_val);
result_val->empty = 1; result=create_operand(Empty, operand1_val);
quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}
else{yyerror_semantic(" != takes operands of same type"); return;}
}
| expression INFERIOR expression {
if ($1.is_string || $3.is_string || $1.is_boolean || $3.is_boolean){yyerror_semantic("Invalid type for this operation"); return;}
else if ($1.is_number && $3.is_number){
$$.is_boolean = true;
$$.boolean_expression.truelist = makelist(currentInstruction);
$$.boolean_expression.falselist = makelist(currentInstruction+1);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
operand1_val->label = -1;
operand1 = create_operand(Labels, operand1_val);
// operand1 management
if ($1.arithmetic_expression.is_litteral){
operand2_val->integer = $1.arithmetic_expression.value;
operand2 = create_operand(Integers , operand2_val);
}else{
strcpy(operand2_val->variable, $1.arithmetic_expression.sym);
operand2 = create_operand(Variable , operand2_val);
}
// operand2 management
if ($3.arithmetic_expression.is_litteral){
result_val->integer = $3.arithmetic_expression.value;
result = create_operand(Integers , result_val);
}else{
strcpy(result_val->variable, $3.arithmetic_expression.sym);
result = create_operand(Variable , result_val);
}
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BL],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
operand1_val->label = -1; operand1=create_operand(Labels, operand1_val);
operand2_val->empty = 1; operand2=create_operand(Empty, operand1_val);
result_val->empty = 1; result=create_operand(Empty, operand1_val);
quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}
else{yyerror_semantic(" < takes operands of same type"); return;}
}
| expression INFERIOREQUAL expression{
if ($1.is_string || $3.is_string || $1.is_boolean || $3.is_boolean){yyerror_semantic("Invalid type for this operation"); return;}
else if ($1.is_number && $3.is_number){
$$.is_boolean = true;
$$.boolean_expression.truelist = makelist(currentInstruction);
$$.boolean_expression.falselist = makelist(currentInstruction+1);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
operand1_val->label = -1;
operand1 = create_operand(Labels, operand1_val);
// operand1 management
if ($1.arithmetic_expression.is_litteral){
operand2_val->integer = $1.arithmetic_expression.value;
operand2 = create_operand(Integers , operand2_val);
}else{
strcpy(operand2_val->variable, $1.arithmetic_expression.sym);
operand2 = create_operand(Variable , operand2_val);
}
// operand2 management
if ($3.arithmetic_expression.is_litteral){
result_val->integer = $3.arithmetic_expression.value;
result = create_operand(Integers , result_val);
}else{
strcpy(result_val->variable, $3.arithmetic_expression.sym);
result = create_operand(Variable , result_val);
}
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BLE],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
operand1_val->label = -1; operand1=create_operand(Labels, operand1_val);
operand2_val->empty = 1; operand2=create_operand(Empty, operand1_val);
result_val->empty = 1; result=create_operand(Empty, operand1_val);
quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BR],
operand1, operand2, result);
quads[currentInstruction] = *quad;
currentInstruction++;
}
else{yyerror_semantic(" <= takes operands of same type"); return;}
}
| expression SUPERIOR expression {
if ($1.is_string || $3.is_string || $1.is_boolean || $3.is_boolean){yyerror_semantic("Invalid type for this operation"); return;}
else if ($1.is_number && $3.is_number){
$$.is_boolean = true;
$$.boolean_expression.truelist = makelist(currentInstruction);
$$.boolean_expression.falselist = makelist(currentInstruction+1);
union operandValue* operand1_val = create_operand_value();
union operandValue* operand2_val = create_operand_value();
union operandValue* result_val = create_operand_value();
operand* operand1;
operand* operand2;
operand* result;
operand1_val->label = -1;
operand1 = create_operand(Labels, operand1_val);
// operand1 management
if ($1.arithmetic_expression.is_litteral){
operand2_val->integer = $1.arithmetic_expression.value;
operand2 = create_operand(Integers , operand2_val);
}else{
strcpy(operand2_val->variable, $1.arithmetic_expression.sym);
operand2 = create_operand(Variable , operand2_val);
}
// operand2 management
if ($3.arithmetic_expression.is_litteral){
result_val->integer = $3.arithmetic_expression.value;
result = create_operand(Integers , result_val);
}else{
strcpy(result_val->variable, $3.arithmetic_expression.sym);
result = create_operand(Variable , result_val);
}
quadruplets_node* quad = create_quadruplet(currentInstruction, quadruplets_operators_names[BG],
operand1, operand2, result);