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uccompiler.y
executable file
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uccompiler.y
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%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ast.h"
extern int yylineno;
extern char * yytext;
extern int columnNumber;
void print(char *s);
void yyerror (char *s);
extern int yylex();
int flag_error = 0;
int stat_list = 0;
tree_node* root = NULL;
tree_node* auxId = NULL;
tree_node* auxNull = NULL;
tree_node* auxIntLit = NULL;
tree_node* auxChrLit = NULL;
tree_node* auxStrLit = NULL;
%}
%token BITWISEAND
%token BITWISEOR
%token BITWISEXOR
%token AND
%token OR
%token EQ
%token ASSIGN
%token NOT
%token NE
%token GT
%token LT
%token GE
%token LE
%token COMMA
%token SEMI
%token LBRACE
%token RBRACE
%token LPAR
%token RPAR
%token PLUS
%token MINUS
%token MUL
%token DIV
%token MOD
%token INT
%token CHAR
%token VOID
%token IF
%token ELSE
%token RETURN
%token RESERVED
%token SHORT
%token DOUBLE
%token WHILE
%locations
%token <id> ID
%token <intlit> INTLIT
%token <chrlit> CHRLIT
%token <reallit> REALLIT
%type <node> Start
%type <node> Restart
%type <node> FunctionDefinition
%type <node> FunctionDeclaration
%type <node> FunctionDeclarator
%type <node> FunctionBody
%type <node> Declaration
%type <node> TypeSpec
%type <node> Declarator
%type <node> CommaDeclarator
%type <node> Statement
%type <node> ParameterList
%type <node> ParameterDeclaration
%type <node> CommaParameterDeclaration
%type <node> ZUAssignExpr
%type <node> StatementSpecial
%type <node> StatList
%type <node> Expr
%type <node> ExprSpecial
%type <node> ZUExprZMComma
%type <node> ZMComma
%type <node> ZUid
%type <node> ZUExpr
%type <node> Empty
%type <node> FandD
%type <node> Restatement
%union{
char* id;
char* intlit;
char* chrlit;
char* reallit;
struct _tree_node* node;
}
%left COMMA
%right ASSIGN
%left OR
%left AND
%left BITWISEOR
%left BITWISEXOR
%left BITWISEAND
%left EQ NE
%left GE LE GT LT
%left PLUS MINUS
%left MUL DIV MOD
%nonassoc "pos" "neg"
%right NOT
%left LPAR RPAR LBRACE RBRACE
%nonassoc ELSE
%%
Start: FunctionDefinition Restart {
$$ = create_simple_node("Program",yylineno,(int)(columnNumber));
root = $$;
if($1 != NULL) {
add_child($$, $1);
add_brother($1, $2);
}
}
| FunctionDeclaration Restart {
$$ = create_simple_node("Program", yylineno, (int)(columnNumber));
root = $$;
if($1 != NULL) {
add_child($$, $1);
add_brother($1, $2);
}
}
| Declaration Restart {
$$ = create_simple_node("Program", yylineno, (int)(columnNumber));
root = $$;
if($1 != NULL) {
add_child($$, $1);
add_brother($1, $2);
}
}
;
Restart: Empty {$$ = $1;}
| FunctionDefinition Restart {
$$ = $1;
if($1 != NULL) {
add_brother($1, $2);
}
}
| FunctionDeclaration Restart {
$$ = $1;
if($1 != NULL) {
add_brother($1, $2);
}
}
| Declaration Restart {
$$ = $1;
if($1 != NULL) {
add_brother($1, $2);
}
}
;
FunctionDefinition: TypeSpec FunctionDeclarator FunctionBody {
$$ = create_simple_node("FuncDefinition", yylineno, (int)(columnNumber));
add_child($$, $1);
add_brother($1,$2);
add_brother($1,$3);
$$->loc = @2;
}
;
FunctionDeclaration: TypeSpec FunctionDeclarator SEMI {
$$ = create_simple_node("FuncDeclaration", yylineno, (int)(columnNumber));
add_child($$, $1);
add_brother($$->son,$2);
$$->loc = @2;
}
;
FunctionDeclarator: ID LPAR ParameterList RPAR {
$$ = create_value_node("Id", $1, yylineno, (int)($3->col - strlen($1)));
add_brother($$, $3);
}
;
FunctionBody: LBRACE FandD RBRACE {
$$ = create_simple_node("FuncBody", yylineno, (int)(columnNumber));
if($2 != NULL){
add_child($$,$2);
}
}
;
FandD: StatementSpecial FandD {
$$ = $1;
if($1 != NULL) {
add_brother($1, $2);
}
else{
$$ = $2;
}
}
| Declaration FandD {
$$ = $1;
if($1 != NULL) {
add_brother($1, $2);
}
}
| Empty {$$ = $1;}
;
ParameterList: ParameterDeclaration CommaParameterDeclaration {
$$ = create_simple_node("ParamList", yylineno, (int)($1->col - 1));
add_child($$,$1);
add_brother($1,$2);
$$->loc = @1;
}
;
ParameterDeclaration: TypeSpec ZUid {
$$ = create_simple_node("ParamDeclaration", yylineno, (int)(columnNumber - (columnNumber - $1->col)));
add_child($$,$1);
add_brother($1,$2);
if($2 == NULL){
$$->loc = @1;
}
else{
$$->loc = @2;
}
}
;
CommaParameterDeclaration:COMMA ParameterDeclaration CommaParameterDeclaration {
$$ = $2;
add_brother($2,$3);
$$->loc = @2;
}
| Empty {$$ = $1;}
;
Declaration: TypeSpec Declarator CommaDeclarator SEMI {
$$ = $2;
if($3 != NULL) {
add_brother($$, $3);
}
tree_node* aux = $$;
tree_node aux2 = *$1;
while(aux != NULL) {
aux2.next_brother = aux->son;
aux2.father = aux;
aux->son = (tree_node*) malloc(sizeof(tree_node));
*(aux->son) = aux2;
aux = aux->next_brother;
}
}
| error SEMI {$$ = NULL;}
;
TypeSpec: INT { $$ = create_simple_node("Int", yylineno, (int)(columnNumber - 3));$$->loc = @1;}
| CHAR { $$ = create_simple_node("Char", yylineno, (int)(columnNumber - 4));$$->loc = @1;}
| VOID { $$ = create_simple_node("Void", yylineno, (int)(columnNumber - 4));$$->loc = @1;}
| SHORT { $$ = create_simple_node("Short", yylineno, (int)(columnNumber - 5));$$->loc = @1;}
| DOUBLE { $$ = create_simple_node("Double", yylineno, (int)(columnNumber - 6));$$->loc = @1;}
;
Declarator: ID ZUAssignExpr {
$$ = create_simple_node("Declaration", yylineno, (int)(columnNumber));
auxId = create_value_node("Id",$1, yylineno, (int)(columnNumber - strlen($1) - 1));
if($2 != NULL){
add_child($$,auxId);
add_brother($$->son,$2);
}
else{
add_child($$,auxId);
}
$$->loc = @1;
}
;
ZUAssignExpr: ASSIGN Expr {$$ = $2;}
| Empty {$$ = $1;}
;
CommaDeclarator: Empty {$$ = $1;}
| COMMA Declarator CommaDeclarator {
$$ = $2;
add_brother($2, $3);
}
;
Statement: error SEMI {$$ = NULL;}
| StatementSpecial {$$ = $1;}
;
StatementSpecial: ZUExpr SEMI {$$ = $1;}
| LBRACE StatList RBRACE {$$ = $2;}
| LBRACE Statement RBRACE {$$ = $2;}
| LBRACE RBRACE {$$ = NULL;}
| LBRACE error RBRACE {$$ = NULL;}
| IF LPAR Expr RPAR Statement {
if($3 != NULL) {
$$ = create_simple_node("If", yylineno, (int)(columnNumber));
add_child($$,$3);
if($5 != NULL) {
add_brother($3,$5);
}else {
add_brother($3,create_simple_node("Null", yylineno, (int)(columnNumber)));
}
add_brother($3,create_simple_node("Null", yylineno, (int)(columnNumber)));
} else {
$$ = NULL;
}
$$->loc = @3;
}
| IF LPAR Expr RPAR Statement ELSE Statement {
if( $3 != NULL ) {
$$ = create_simple_node("If", yylineno, (int)(columnNumber));
add_child($$, $3);
if($5 != NULL) {
add_brother($3,$5);
}else {
add_brother($3,create_simple_node("Null", yylineno, (int)(columnNumber)));
}
if($7 != NULL) {
add_brother($3,$7);
}else {
add_brother($3,create_simple_node("Null", yylineno, (int)(columnNumber)));
}
} else {
$$ = NULL;
}
$$->loc = @3;
}
| WHILE LPAR Expr RPAR Statement {
$$ = create_simple_node("While", yylineno, (int)(columnNumber));
if($3 != NULL) {
add_child($$,$3);
} else {
auxNull = create_simple_node("Null", yylineno, (int)(columnNumber));
add_child($$,auxNull);
}
if($5 != NULL) {
add_brother($$->son,$5);
}else {
add_brother($$->son,create_simple_node("Null", yylineno, (int)(columnNumber)));
}
$$->loc = @3;
}
| RETURN ZUExpr SEMI {
$$ = create_simple_node("Return", yylineno, (int)(columnNumber));
if($2 == NULL){
add_child($$, create_simple_node("Null", yylineno, (int)(columnNumber)));
$$->loc = @1;
}
else{
add_child($$,$2);
$$->loc = @2;
}
}
;
StatList: Statement Statement Restatement {
int stat_num = 0;
tree_node * stat_aux = $3;
while (stat_aux != NULL) {
stat_num +=1;
stat_aux = stat_aux -> next_brother;
}
if($1 != NULL && $2 != NULL) {
$$ = create_simple_node("StatList", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($$->son,$2);
add_brother($$->son,$3);
} else {
if($1 != NULL && $2 == NULL && stat_num >=1) {
$$ = create_simple_node("StatList", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($$->son, $3);
}else if($2 != NULL && $1 == NULL && stat_num >=1){
$$ = create_simple_node("StatList", yylineno, (int)(columnNumber));
add_child($$,$2);
add_brother($$->son, $3);
}else if($2 != NULL && $1 == NULL) {
$$ = $2;
add_brother($$, $3);
}else if($1 != NULL && $2 == NULL){
$$ = $1;
add_brother($$, $3);
}else if($2 == NULL && $1 == NULL && stat_num >=2) {
$$ = create_simple_node("StatList", yylineno, (int)(columnNumber));
add_child($$,$3);
}
}
}
;
Restatement: Empty {$$ = $1;}
| Statement Restatement {
if($1 != NULL){
$$ = $1;
add_brother($$,$2);
}
else{
$$ = $2;
}
}
;
Expr: ExprSpecial {$$ = $1;}
| Expr COMMA ExprSpecial {
$$ = create_simple_node("Comma", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($$->son,$3);
$$->loc = @2;
}
;
ExprSpecial: ExprSpecial ASSIGN ExprSpecial {
$$ = create_simple_node("Store", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial AND ExprSpecial {
$$ = create_simple_node("And", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial OR ExprSpecial {
$$ = create_simple_node("Or", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial BITWISEAND ExprSpecial {
$$ = create_simple_node("BitWiseAnd", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial BITWISEOR ExprSpecial {
$$ = create_simple_node("BitWiseOr", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial BITWISEXOR ExprSpecial {
$$ = create_simple_node("BitWiseXor", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial EQ ExprSpecial {
$$ = create_simple_node("Eq", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial NE ExprSpecial {
$$ = create_simple_node("Ne", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial LT ExprSpecial {
$$ = create_simple_node("Lt", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial GT ExprSpecial {
$$ = create_simple_node("Gt", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial LE ExprSpecial {
$$ = create_simple_node("Le", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial GE ExprSpecial {
$$ = create_simple_node("Ge", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial PLUS ExprSpecial {
$$ = create_simple_node("Add", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial MINUS ExprSpecial {
$$ = create_simple_node("Sub", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial MUL ExprSpecial {
$$ = create_simple_node("Mul", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial DIV ExprSpecial {
$$ = create_simple_node("Div", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| ExprSpecial MOD ExprSpecial {
$$ = create_simple_node("Mod", yylineno, (int)(columnNumber));
add_child($$,$1);
add_brother($1,$3);
$$->loc = @2;
}
| NOT ExprSpecial {
$$ = create_simple_node("Not", yylineno, (int)(columnNumber));
add_child($$,$2);
$$->loc = @1;
}
| MINUS ExprSpecial %prec "neg" {
$$ = create_simple_node("Minus", yylineno, (int)(columnNumber));
add_child($$,$2);
$$->loc = @1;
}
| PLUS ExprSpecial %prec "pos" {
$$ = create_simple_node("Plus", yylineno, (int)(columnNumber));
add_child($$,$2);
$$->loc = @1;
}
| ID { $$ = create_value_node("Id",$1, yylineno, (int)(columnNumber- strlen($1)-2));$$->loc = @1;}
| INTLIT { $$ = create_value_node("IntLit",$1, yylineno, (int)(columnNumber - strlen($1)));$$->loc = @1;}
| CHRLIT { $$ = create_value_node("ChrLit",$1, yylineno, (int)(columnNumber - strlen($1)));$$->loc = @1;}
| REALLIT { $$ = create_value_node("RealLit",$1, yylineno, (int)(columnNumber - strlen($1)));$$->loc = @1;}
| LPAR Expr RPAR {$$ = $2;}
| LPAR error RPAR {$$ = NULL;}
| ID LPAR ZUExprZMComma RPAR {
$$ = create_simple_node("Call", yylineno, (int)(columnNumber - strlen($1)));
add_child($$, create_value_node("Id",$1, yylineno, (int)(columnNumber- strlen($1)-2)));
add_brother($$->son,$3);
$$->loc = @2;
}
| ID LPAR error RPAR {$$ = NULL;}
;
ZUExprZMComma: Empty {$$ = $1;}
| ExprSpecial ZMComma {
$$ = $1;
add_brother($$,$2);
}
;
ZMComma: Empty {$$ = $1;}
| COMMA ExprSpecial ZMComma {
$$ = $2;
add_brother($$,$3);
$$->loc = @2;
}
;
ZUid: Empty {$$ = NULL;}
| ID {$$ = create_value_node("Id",$1, yylineno, (int)(columnNumber - strlen($1)));$$->loc = @1;}
;
ZUExpr: Empty {$$ = NULL;}
| Expr {$$ = $1;$$->loc = @1;}
;
Empty: {$$ = NULL;}
;
%%
/* A função main() está do lado do lex */
void yyerror (char *s) {
flag_error = 1;
printf ("Line %d, col %d: %s: %s\n", yylineno, (int)(columnNumber - strlen(yytext)), s, yytext);
}