C++ define函数代码示例

std::string Version::preprocessorDefinition() const {
  SmallString<64> define("-D__SWIFT_COMPILER_VERSION=");
  llvm::raw_svector_ostream OS(define);
  uint64_t versionConstant = 0;

  auto NumComponents = Components.size();

  if (NumComponents > 0)
    versionConstant += Components[0] * 1000 * 1000 * 1000;
  // Component 2 is not used.
  if (NumComponents > 2)
    versionConstant += Components[2] * 1000 * 1000;
  if (NumComponents > 3)
    versionConstant += Components[3] * 1000;
  if (NumComponents > 4)
    versionConstant += Components[4];

  OS << versionConstant;
  return OS.str().str();
}

int main(void){
	char s[]="tudo puta e viado.";
	clock_t Ti, Tf;

	//scanf("%[^\n]",&s);
	printf("%s\n",s );

	Ti=clock();
	string_inverte(s);
	Tf=clock();
	printf("%s\nem tempo: %f",s,(Tf-Ti) );

	//usando pilha
	char t[]="tudo puta e viado.";
	lista pilha;
	int cont=0;
	char aux;

	printf("\npilha\n");
	Ti=clock();
	define(&pilha);

	while(t[cont]!='.'){
		while(t[cont]!=' ' && t[cont]!='.'){
			empilha(&pilha,t[cont]);
			cont++;
		}
		while(pilha.total>0){
			aux=desempilha(&pilha);
			printf("%c",aux );
		}
		printf(" ");
		if(t[cont]!='.'){
			cont++;
		}
	}
	Tf=clock();
	printf("\npilha com tempo: %f\n",(Tf-Ti) );

	return 0;
}

void 
SDFLoader::load()
{
	std::ifstream infile(_filename);
	std::string line;
	while(std::getline(infile, line)) {
		std::istringstream iss(line);
		std::vector<std::string> tokens{std::istream_iterator<std::string>{iss},
										std::istream_iterator<std::string>{}};
		if (tokens.size() > 0 && tokens[0].substr(0, 1) == "#") {
			continue;
		}
		if (tokens[0] == "render" && tokens.size() == 5) {
			render(tokens);
		} else if(tokens[0] == "define") {
			define(tokens);
		} else {
			throw std::runtime_error("illegal sdf line");
		}
	}
}

void UmlActivityParameter::html(Q3CString pfix, unsigned int rank, unsigned int level) {
  define();

  fw.write("<table><tr><td><div class=\"element\">Activity action pin <b>");
  writeq(name());
  fw.write("</b></div></td></tr></table>\n");

  Q3CString s = defaultValue();
  
  if (! s.isEmpty()) {
    fw.write("<p>Default value :</p><ul>");
  
    fw.write("<pre>\n");
    writeq(s);
    fw.write("</pre></ul>");
  }

  UmlPinParameter::html(pfix, rank, level);

  unload(FALSE, FALSE);
}

int				get_next_line(int const fd, char **line)
{
	static t_var	*get_in[MAX_FD];

	if (fd >= MAX_FD || fd < 0 || line == NULL)
		return (-1);
	if (get_in[fd] && get_in[fd]->file_lecture == 0)
		return (0);
	if (!get_in[fd] && !define(&get_in[fd]))
		return (-1);
	while (get_in[fd]->file_lecture > 0 && !((return_line(get_in[fd]))))
	{
		while (get_in[fd]->tampon + BUFF_SIZE > get_in[fd]->len)
			if (!add_memory_size(get_in[fd]))
				return (-1);
		get_in[fd]->file_lecture = read(fd,
				get_in[fd]->memory + get_in[fd]->tampon, BUFF_SIZE);
		get_in[fd]->tampon = get_in[fd]->tampon + get_in[fd]->file_lecture;
	}
	return (return_handle(&get_in[fd], get_in[fd], line));
}

int main(){
    //declaração das variáveis
    int i, ch, nl, np;
    int *Rep = NULL;
    bignum perm;
    char frase[MAXDIGITS];
    //Armazenado a frase digitada pelo usário
    printf ("Por favor digite a frase desejada\n");
    scanf (" %[^\n]", frase);
    //A função define, define a quantidade de letras e de palavras contidas na frase,  e as armazenas em nl e np respectivamente
    define (frase, &nl, &np);
    //A função reteptição armazena a quantidade de vezes que as letras (a-z) forma repetidas armazenado em um vetor
    Rep = repeticao (frase);
    //Controle caso a locação de memórias do vetor não for bem sucedida
    if (!Rep){
        printf ("Ocorreu um erro estranho\n");
        return 0;
    }   
    //Imprime os dados obitidos
    printf("----------------\n");
    printf ("A frase digitada foi: %s\n", frase);
    printf ("Ela possui %d letras e %d palavras\n", nl, np);
    printf("----------------\n");
    printf ("Letras repetidas\n");
    for (i=0; i<ALF; i++){
        ch = 97;
        if (Rep[i] != 0){
            printf("%c -> %d repeticoes\n",ch+i, Rep[i]);
        }
    }
    printf("----------------\n");
    //A funcao calclando_com_corretas calcula qual é o numero de combianacoes exatas
    calculando_com_corretas ( nl,  np, Rep, &perm);
    printf ("A frase digitada pode ser escrita de ");
    //Exibindo o resultado
    print_bignum (&perm);
    printf ("maneiras\n");
    //FIM DO PROGRAMA
    return 0;
}

void register_builtin_definitions(void)
{
    struct macro macro = {
        {IDENTIFIER, NULL, 0},
        OBJECT_LIKE,
        0, /* parameters */
    };

    macro.name.strval = "__STDC_VERSION__";
    macro.replacement = parse("199409L", &macro.size);
    define(macro);

    macro.name.strval = "__STDC__";
    macro.replacement = parse("1", &macro.size);
    define(macro);

    macro.name.strval = "__STDC_HOSTED__";
    macro.replacement = parse("1", &macro.size);
    define(macro);

    macro.name.strval = "__LINE__";
    macro.replacement = parse("0", &macro.size);
    define(macro);

    macro.name.strval = "__x86_64__";
    macro.replacement = parse("1", &macro.size);
    define(macro);

    /* For some reason this is not properly handled by macros in musl. */
    macro.name.strval = "__inline";
    macro.replacement = parse(" ", &macro.size);
    define(macro);

    macro.name.strval = "__FILE__";
    macro.replacement = calloc(1, sizeof(*macro.replacement));
    macro.replacement[0].token.token = STRING;
    macro.replacement[0].token.strval = current_file.path;
    macro.replacement[0].token.intval = 0;
    define(macro);

    register__builtin_va_end();
}

int org(int size, char *label, char *op, int *errorPtr)
{
  int newLoc;
  bool backRef;

  if (size)
    NEWERROR(*errorPtr, INV_SIZE_CODE);
  if (!*op) {
    NEWERROR(*errorPtr, SYNTAX);
    return NORMAL;
  }
  if (offsetMode) {
    loc = locOffset;            // restore loc used prior to Offset directive
    offsetMode = false;         // turn off offset mode
  }

  op = eval(op, &newLoc, &backRef, errorPtr);
  if (*errorPtr < SEVERE && !backRef) {
    NEWERROR(*errorPtr, INV_FORWARD_REF);
  }
  else if (*errorPtr < ERRORN) {
    if (isspace(*op) || !*op) {
      // Check for an odd value, adjust to one higher
      if (newLoc & 1) {
	NEWERROR(*errorPtr, ODD_ADDRESS);
	newLoc++;
      }
      loc = newLoc;
      // Define the label attached to this directive, if any
      if (*label)
	define(label, loc, pass2, true, errorPtr);
      // Show new location counter on listing
      listLoc();
    }
    else
      NEWERROR(*errorPtr, SYNTAX);
  }
  return NORMAL;
}

void
ds(int size, char *label, char *op, int *errorPtr)
{
	int blockSize;
	char backRef;
	char *eval();

	if (size == SHORT) {
		NEWERROR(*errorPtr, INV_SIZE_CODE);
		size = WORD;
	} else if (!size)
		size = WORD;
	/* Move location counter to a word boundary and fix the listing if doing
	   DS.W or DS.L (but not if doing DS.B, so DS.B's can be contiguous) */
	if ((size & (WORD | LONG)) && (loc & 1)) {
		loc++;
		listLoc();
	}
	/* Define the label attached to this directive, if any */
	if (*label)
		define(label, loc, pass2, errorPtr);
	/* Evaluate the size of the block (in bytes, words, or longwords) */
	op = eval(op, &blockSize, &backRef, errorPtr);
	if (*errorPtr < SEVERE && !backRef) {
		NEWERROR(*errorPtr, INV_FORWARD_REF);
		return;
	}
	if (*errorPtr > SEVERE)
		return;
	if (!isspace(*op) && *op) {
		NEWERROR(*errorPtr, SYNTAX);
		return;
	}
	if (blockSize < 0) {
		NEWERROR(*errorPtr, INV_LENGTH);
		return;
	}
	loc += blockSize * size;
}

void ShootEmUp::escapeCheck() {
	if (_count321 != 0)
		return;

	if (_escapeCount > 0) {
		_escapeCount--;
		return;
	}

	// Escape_count = 0; now what ?

	if (_escaping) {
		if (_gotOut) {
			newEscape();
			_escaping = false;
			_vm->_graphics->seuDrawPicture(_escapeStock * 90 + 20, 30, kStocks + 4);
		} else {
			_vm->_graphics->seuDrawPicture(_escapeStock * 90 + 20, 30, kStocks + 5);
			_escapeCount = 20;
			_gotOut = true;
			define(_escapeStock * 90 + 20, 50, 24, 0, 2, 17, false, true); // Escaped!
			gain(-10);
			_hasEscaped[_escapeStock] = true;

			_howManyHaveEscaped++;

			if (_howManyHaveEscaped == 7) {
				_vm->_graphics->seuDrawPicture(266, 90, 23);
				_time = 0;
			}
		}
	} else {
		_escapeStock = getStockNumber(_vm->_rnd->getRandomNumber(6));
		_escaping = true;
		_gotOut = false;
		_vm->_graphics->seuDrawPicture(_escapeStock * 90 + 20, 30, kStocks + 2); // Smiling!
		_escapeCount = 200;
	}
}

int processline(const char *line,FILE *fd,FILE *fw)
{
	int ret,i;
	char *fields[10];
	for(i=0;i<10;++i)
		*(fields+i)=malloc(100);

	split(line,fields,' ');

	//if it is a macro call then expand
	for(i=0;i<nami;++i)
	{
		ret=strcmp(namtab[i].name,fields[0]);
		if(ret==0)
		{
			expand(line,fw);
			return 1;
		}

	}

	//if it is a macro definiton than , define it
	ret=strcmp(fields[1],"MACRO");
	if(ret==0)
	{
		define(line,fields[0],fd);
		return 1;
	}

	//else write in into the output file

	fprintf(fw,line);
	fprintf(fw,"\n");

	for(i=0;i<10;++i)
		free(*(fields+i));
	return 1;

}

void
TestEval::eval_lambda()
{
  EnvPtr env = libraryEnvironment();
  ValuePtr value = eval(env, "((lambda (a b c) (+ a b c)) 1 2 3)");
  CHECK("Integer type", value->isNumber() && value->isExact());
  CHECK_EQUAL("Integer content", int, 6, value->vInt());

  value = eval(env, "(define foo (lambda (a b c) (+ a b c)))\n(foo 1 2 3)\n");
  CHECK("Integer type", value->isNumber() && value->isExact());
  CHECK_EQUAL("Integer content", int, 6, value->vInt());  

  value = eval(env, "\n\
(define (accum n) (lambda (a) (set! n (+ a n)) n))\n \
(define foo (accum 5))\n\
(define bar (accum 100))\n\
(foo 10) ;Comment\n\
(bar 10)\n\
(foo 10)");
  CHECK("Integer type", value->isNumber() && value->isExact());
  CHECK_EQUAL("Integer content", int, 25, value->vInt());  
}

static void
directive()
{
	Tok  *t;
	char *dir;

	t = ppnoexpand();
	dir = t->v;
	if(strcmp(dir, "include") == 0)
		include();
	else if(strcmp(dir, "define")  == 0)
		define();
	else if(strcmp(dir, "if")  == 0)
		pif();
	else if(strcmp(dir, "elseif")  == 0)
		elseif();
	else if(strcmp(dir, "else")  == 0)
		pelse();
	else if(strcmp(dir, "endif")  == 0)
		endif();
	else
		errorposf(&t->pos, "invalid directive %s", dir);
}

void init_preprocess(void)
{
   int i;
   char *cp;

   init_symtbl();
   for (i = 0; predefs[i]; i++)
   {
      cp = copyofstr("1");
      check_os_malloc(cp);
      define(predefs[i], -1, (unsigned char *) cp, DEF_PREDEF);
   }

   init_include();
   keep_comments = 0;
   no_line_lines = 0;
   do_at_ctrls = 0;
   incldep = 0;
   willbefirst = 1;
   quote = 0;
   ifstack = 0;
   n_skipped_ifs = 0;
}

int main(int argc, char** argv){

	

	note n[6];
	for(int i=0;i<6;i++){
		n[i].start = 1.0;
		n[i].length = 1.0;
	}


	

	

	define(n);

	for(int i = 0;i<6;i++)
		printf("%.2f\t%g\n", n[i].start, n[i].length);


	return 0;
}