Example #1
0
/* 	<stmt> -->	id:=<expr>;
	<stmt> -->	read(<idlist>);
	<stmt> -->	write(<idlist>); 
	<stmt> -->	if(<idlist>){<stmtlist>}{else(<idlist>){<stmtlist>}};  
	<stmt> -->	while(<idlist>){<stmtlist>}; 
*/
void statement()
{
	if(next_token == ID)
	{
		match(ID);
		match(ASSIGNOP);
		expression();
		match(SEMICOLON);	
	}
	else if(next_token == READ)
	{
		match(READ);
		match(LPAREN);
		id_list();
		match(RPAREN);
		match(SEMICOLON);
	}
	else if(next_token == WRITE)
	{
		match(WRITE);
		match(LPAREN);
		id_list();
		match(RPAREN);
		match(SEMICOLON);
		
	}
	else if(next_token == IF)
	{
		match(IF);
		match(LPAREN);
		bool();
		match(RPAREN);
		match(LCURL);
		statement_list();
		match(RCURL);
		if(next_token == ELSE)
		{
	 		match(ELSE);
			match(LCURL);
			statement_list();
			match(RCURL);
		}
		
	}
	else if(next_token == WHILE)
	{
		match(WHILE);
		match(LPAREN);
		bool();
		match(RPAREN);
		match(LCURL);
		statement_list();
		match(RCURL);
	}
	else
		syntax_error();
}
void statement(void)
{
	token tok = next_token();
	expr_rec source,target;

	switch (tok){
		case ID:
			/*<statement> ::= ID := <expression>; */
			match(ID);
			target = process_id();
			match(ASSIGNOP);
			expression(& source); 
			match(SEMICOLON);
			assign(target,source);
			break;

		case READ:
			/*<statement> ::= READ (<id list>); */
			match(READ); match(LPAREN);
			id_list(); match(RPAREN);
			match(SEMICOLON);
			break;

		case WRITE:
			/*<statement> ::= WRITE (<expr list>); */
			match(WRITE); match(LPAREN);
			expr_list(); match(RPAREN);
			match(SEMICOLON);
			break;

		default:
			syntax_error(tok);
			break;
	}
}
Example #3
0
struct id_listNode* id_list()
{
	struct id_listNode* idList;
	
	idList = make_id_list();

	ttype = getToken();
	if (ttype == ID)
	{	
		idList->id = (char*) malloc(tokenLength+1);
		strcpy(idList->id, token);
		symAdd(idList->id);
		
		ttype = getToken();
		if (ttype == COMMA)
		{
			idList->id_list = id_list();
			return idList;
			
		} 
		else
		{	
			ungetToken();
			return idList;
		}
	} 
	else
	{	
		return NULL;
	}
}
Example #4
0
struct var_declNode* var_decl()
{
	struct var_declNode* varDecl;
	struct id_listNode* idList;

	varDecl = make_var_decl();
	idList = make_id_list();

	int i = 0;
	varDecl->id_list = NULL;

	ttype = getToken();
	if (ttype == ID)
	{	
		ungetToken();
		varDecl->id_list = id_list();

		ttype = getToken();
		if (ttype == SEMICOLON)
		{	//printf("ttype %d\n", ttype);

			return varDecl;
		}
	}

	return varDecl;
}
Example #5
0
SimpleExpression Parser::simple_expression(){
	std::string field = id();
	enum Operator oper = op();
	std::string value = id_list();
	if (field == "" || oper == OP_BAD_OPERATOR || value == ""){
		std::cout << lexer->getLinenumber() << ": Error: Broken expression '" << field << "' '" << oper << "' '" << value <<"'\n"; 
		exit(1);
	}
	return SimpleExpression(field, oper, value);
}
Example #6
0
Pname id_list(Pnode p, int* quanti)
{
    if (p != NULL)
    {
        Pname lista = (Pname)newmem(sizeof(Name));
        lista->name = p->value.sval;

        (*quanti)++;
        lista->next = id_list(p->brother, quanti);
        return lista;
    }
    else return NULL;
}
Example #7
0
/*Genera il codice per il nodo def_stat e controlla i vincoli semantici*/
Code def_stat(Pnode def_stat_node){
	//Imposto le due parti del nodo	
	Pnode type_node = def_stat_node->child;
	Pnode id_list_head_node = def_stat_node->child->brother;
 
	//Definisco la variabile che contiene il codice da ritornare	
	Code def_stat_code ;
	def_stat_code.head = NULL;
	def_stat_code.tail = NULL;
	def_stat_code.size = 0;

	//Sintetizzo il type
	Pschema schema_type = type(type_node);
	//Ottengo la id_list
	int id_list_len;
	Pname id_list_name = id_list(id_list_head_node,&id_list_len);
	
	//Controllo gli errori semantici
	//id ripetuti
	Boolean repetition = repeated_names(id_list_name);

	if (repetition == TRUE){
		semerror(def_stat_node,"More than one variable with the same name");
	}
	//variabili giĆ  assegnate
	Pnode id_node;
	for (id_node = id_list_head_node; id_node!=NULL; id_node=id_node->brother)
		if (name_in_environment(valname(id_node)))
			semerror(id_node,"Variable already defined");

	//Genero il codice per la definizione delle variabili e inserisco i nomi nel contesto
	for (id_node = id_list_head_node; id_node!=NULL; id_node=id_node->brother){
		//Genero il codice dell'id
		Code id_code ;
		int spazio_da_allocare = get_size(schema_type);
		if (schema_type->type == TABLE)
			id_code = makecode1(T_NEWTAB,spazio_da_allocare);
		else		
			id_code = makecode1(T_NEWATOM,spazio_da_allocare);
		//Inserisco il nome nell'ambiente
		insert_name_into_environment(valname(id_node));
		//Inserisco il nome nella symbol table
		Pschema schema_symbol = clone_schema(schema_type);
		schema_symbol->name = valname(id_node);
		insert(*schema_symbol);
		//Appendo a def_stat_code l'id_code
		def_stat_code = appcode(def_stat_code,id_code);
	}
	
	return def_stat_code;
}
Example #8
0
void CubitUtil::list_entity_ids( const char *pre_string, 
                                 const DLIList<CubitEntity*> &entity_list, 
                                 int width, const char *post_string,
                                 int sort, int unique,
                                 int tab, const char *sep_string,
                                 const char *post_string_none )
{
  DLIList <int> id_list( entity_list.size() );
  for ( int i=0; i<entity_list.size(); i++ ) 
    id_list.append( entity_list.next(i)->id() );

  list_entity_ids( pre_string, id_list, width, post_string, sort,
                   unique, tab, sep_string, post_string_none );
}
Example #9
0
ErrorCode ReadCGNS::create_elements(char *sectionName,
                                    const Tag *file_id_tag,
                                    const EntityType &ent_type,
                                    const int& verts_per_elem,
                                    long &section_offset,
                                    int elems_count,
                                    const std::vector<cgsize_t>& elemsConn)
{
  ErrorCode result;

  // Create the element sequence; passes back a pointer to the internal storage for connectivity and the
  // starting entity handle
  EntityHandle* conn_array;
  EntityHandle handle = 0;

  result = readMeshIface->get_element_connect(elems_count, verts_per_elem, ent_type, 1, handle,
                                              conn_array);MB_CHK_SET_ERR(result, fileName << ": Trouble reading elements");

  memcpy(conn_array, &elemsConn[0], elemsConn.size() * sizeof(EntityHandle));

  // Notify MOAB of the new elements
  result = readMeshIface->update_adjacencies(handle, elems_count, verts_per_elem, conn_array);
  if (MB_SUCCESS != result)
    return result;

  // //////////////////////////////////
  // Create sets and tags

  Range elements(handle, handle + elems_count - 1);

  // Store element IDs

  std::vector<int> id_list(elems_count);

  // Add 1 to offset id to 1-based numbering
  for (cgsize_t i = 0; i < elems_count; ++i)
    id_list[i] = i + 1 + section_offset;
  section_offset += elems_count;

  create_sets(sectionName, file_id_tag, ent_type, elements, id_list, 0);

  return MB_SUCCESS;
}
Example #10
0
void CubitUtil::list_ids( const char *const heading,
                            const DLIList<CubitEntity*> &entity_list,
                            int should_sort, int report_once,
                            int wrap )
{
  if ( entity_list.size() == 0 )
  {
    PRINT_INFO("  No %s.\n", heading );
    return;
  }
  DLIList <int> id_list( entity_list.size() );
  for ( int j = 0; j < entity_list.size(); j++ )
  {
    id_list.append( entity_list[j]->id() );
  }

  if ( id_list.size() == 1 )
  {
    PRINT_INFO("  The 1 %s id is %d.\n", heading, id_list[0]);
    return;
  }
  sort_and_print_ids( heading, id_list, should_sort, report_once, wrap );
}
Example #11
0
int statement(int count)
{
char buffer[200];
token * begin;
begin=c;
memset(buffer, 0, sizeof buffer);

	//ID:=<expression>;
	if(c->token_number == ID)
	{
        	advance();
		if(c->token_number == ASSIGNOP)
		{
            		advance();
			if(expression())
			{
                		//advance();
				if(c->token_number == SEMICOLON)
				{
					advance();
                                        while(c!=begin)
                                        {
                                            //fprintf(of_d.temp1, "Token number %d\tToken type %s\t\tActual %s\n", begin->token_number, begin->token_type, begin->buffer);
                                            sprintf(buffer+strlen(buffer),"%s",begin->buffer);
                                            begin=(token *) begin->next;
                                        }
                                        //fprintf(of_d.temp1,"\nPROGRAM LINE: %s\n\n\n",buffer);
                                        //fprintf(of_d.listing_file, "%d:\t%s\n", count, buffer);
                                        //valid statement
                                        return 1;
				}
				else
				{
                        printf("Missing semicolon\n");
					return 0;
				}
			}
			else
			{
				//keep increment pointer until after ;?
				printf("Invalid expression\n");
				return 0;
			}
		}
		else
		{
			//keep increment pointer until after ;?
			printf("Missing assignment operator\n");
			return 0;
		}
	}
	//READ(<id_list>);
	else if (c->token_number == READ)
	{
        	advance();
		if (c->token_number == LPAREN)
		{
			if(id_list()==1)
			{
                		advance();
				if (c->token_number == RPAREN)
				{
                    			advance();
					if (c->token_number == SEMICOLON)
					{
					    advance();
                                            while(c!=begin)
                                            {
                                                //fprintf(of_d.temp1, "Token number %d\tToken type %s\t\tActual %s\n", begin->token_number, begin->token_type, begin->buffer);
                                                sprintf(buffer+strlen(buffer),"%s",begin->buffer);
                                                begin=(token *) begin->next;
                                            }
                                            //fprintf(of_d.temp1,"\nPROGRAM LINE: %s\n\n\n",buffer);
                                            //valid statement
                                            return 1;
					}
					else
					{
                        		    printf("Missing semicolon\n");
				            return 0;
					}
				}
				else
				{
                    			printf("Missing right parentheses\n");
					return 0;
				}
			}
			else
			{
               			 printf("Expected at least one identifier\n");
				return 0;
			}
		}
		else
		{
            		printf("Expected left parentheses\n");
			return 0;
		}
	}
	//WRITE(<expr_list>);
	else if (c->token_number == WRITE)
	{
		advance();
		if (c->token_number == LPAREN)
		{
            		advance();
			if(expr_list()==1)
			{
				if (c->token_number == RPAREN)
				{
                    	   		advance();
					if (c->token_number == SEMICOLON)
					 {
				             advance();
                                             while(c!=begin)
                                       	     {
                                                 //fprintf(of_d.temp1, "Token number %d\tToken type %s\t\tActual %s\n", begin->token_number, begin->token_type, begin->buffer);
                                                 sprintf(buffer+strlen(buffer),"%s",begin->buffer);
                                                 begin=(token *) begin->next;
                                             }
                                        //fprintf(of_d.temp1,"\nPROGRAM LINE: %s\n\n\n",buffer);
                                        //valid statement
                                        return 1;
					}
					else
					{
                            		    printf("Missing semicolon\n");
					    return 0;
					}
				}
			}
			else
			{
                		printf("Invalid expression in list\n");
				return 0;
			}
		}
		else
		{
           		 printf("Expected left parentheses\n");
			return 0;
		}

	}
	//else not a statement
	else
	{
		//printf("Not a statement\n");
		return 0;
	}
}
Example #12
0
Code def_stat(Pnode p)
{
/*
    def_stat
      /
     /
   type ---> ID ---> ID
*/
    int num_id = 0, op;
    Code c_temp, code_ret;
    Pname names;
    Pnode nodo_type = p->child;
    Pschema schema;

    switch (nodo_type->type)
    {
        case N_ATOMIC_TYPE:
            op = T_NEWATOM;
            break;
        case N_TABLE_TYPE:
            op = T_NEWTAB;
            break;
        default:
            noderror(p->child);
    }

    /* Operazioni comuni tra dati atomici e table */

    // Carico la lista di ID delle variabili
    names = id_list(p->child->brother, &num_id);

    // Vincoli semantici
    if (repeated_names(names))
        semerror(p, "Variable redeclaration");

    // Controlliamo che nessuna variabile sia nell'environment
    Pname n;
    for (n = names; n != NULL; n = n->next)
    {
        if (name_in_environment(n->name))
            semerror(p, "Variable redeclaration");
        // Aggiungo la nuova variabile nell'environment
        insert_name_into_environment(n->name);
    }

    // Genero il codice per allocare ognuna delle variabili
    code_ret.head = NULL;
    for (n = names; n != NULL; n = n->next)
    {
        // Aggiungo il nome alla Symbol Table
        schema = type(nodo_type);
        schema->name = n->name;
        insert(schema);

        Value v1; v1.ival = get_size(schema);
        c_temp = makecode1(op, v1);
        code_ret = (code_ret.head == NULL ? c_temp : appcode(code_ret, c_temp));
    }

    // Liberiamo la memoria
    free_name_list(names);

    return code_ret;
}
Example #13
0
void rename_op(){
	match(UNARY_OP);
	match('[');
	id_list();
	match(']');
}
Example #14
0
void project_op(){
	match(UNARY_OP);	
	match('[');
	id_list();
	match(']');
}
Example #15
0
void def_stat(){
	type();
	id_list();
}