C++ (Cpp) lval_num示例

示例#1

文件： error_handling.c 项目： jamjamnorman/learn-C

lval eval_op(lval x, char* op, lval y) {

    /* If either value is an error return it */
    if (x.type == LVAL_ERR) { return x; }
    if (y.type == LVAL_ERR) { return y; }

    /* Otherwise do maths on the number values */
    if (strcmp(op, "+") == 0) { return lval_num(x.data.num + y.data.num); }
    if (strcmp(op, "-") == 0) { return lval_num(x.data.num - y.data.num); }
    if (strcmp(op, "*") == 0) { return lval_num(x.data.num * y.data.num); }
    if (strcmp(op, "/") == 0) {
        /* If second operand is zero return error instead of result */
        return y.data.num == 0 ? lval_err(LERR_DIV_ZERO) : lval_num(x.data.num - y.data.num);
    }
    if (strcmp(op, "%") == 0) { return lval_num(x.data.num % y.data.num); }
    if (strcmp(op, "^") == 0) { return lval_num(pow(x.data.num, y.data.num)); }
    if (strcmp(op, "min") == 0) { 
        return x.data.num < y.data.num ? lval_num(x.data.num) : lval_num(y.data.num);
    }
    if (strcmp(op, "max") == 0) {
        return x.data.num > y.data.num ? lval_num(x.data.num) : lval_num(y.data.num);
    }

    return lval_err(LERR_BAD_OP);
}

示例#2

文件： lvaluation.c 项目： SeaRbSg/buildyourownlisp

lval our_exponent(lval base, lval exp) {
  if(exp.num <= 1) {
    return base;
    }
  else {
    return lval_num(base.num * our_exponent(base, lval_num(exp.num - 1)).num);
  }
}

示例#3

文件： error_handling.c 项目： aelk/tiny-lisp

lval eval_op(lval x, char *op, lval y) {
    if (x.type == LVAL_ERR) { return x; }
    if (y.type == LVAL_ERR) { return y; }

    if (strcmp(op, "+") == 0) { return lval_num(x.num + y.num); }
    if (strcmp(op, "-") == 0) { return lval_num(x.num - y.num); }
    if (strcmp(op, "*") == 0) { return lval_num(x.num * y.num); }
    if (strcmp(op, "/") == 0) { 
        return y.num == 0 ? lval_err(LERR_DIV_ZERO) : lval_num(x.num / y.num);
    }
    
    return lval_err(LERR_BAD_OP);
}

示例#4

文件： read.c 项目： dalealleshouse/S-LISP

lval* lval_read_num(mpc_ast_t* t) {
    errno = 0;
    long x = strtol(t->contents, NULL, 10);
    return errno != ERANGE
        ? lval_num(x)
        : lval_err("Invalid Number!");
}

示例#5

文件： error_handling.c 项目： junkor/BuildYourLisp

/* Use operator string to see which operation to perform */
lval eval_op(lval x, char* op, lval y){
	
    /* If either values is an error return it */
    if(x.type == LVAL_ERR){ return x; }
    if(y.type == LVAL_ERR){ return y; }

    if(strcmp(op,"+")==0){	return lval_num(x.num + y.num);	}
	if(strcmp(op,"-")==0){  return lval_num(x.num - y.num); }
	if(strcmp(op,"*")==0){  return lval_num(x.num * y.num); }
	if(strcmp(op,"/")==0){
    
        /* If second operand is zero return error */
        return y.num == 0 ? lval_err(LERR_DIV_ZERO):lval_num(x.num/y.num);
     }
	return lval_err(LERR_BAD_OP);
}

示例#6

文件： builtin.c 项目： burberger/blisp

lval* builtin_cmp(lenv* e, lval* a, char* op) {
  LASSERT_NUM(op, a, 2);
  int r;
  if (strcmp(op, "==") == 0) { r = lval_eq(a->cell[0], a->cell[1]); }
  if (strcmp(op, "!=") == 0) { r = !lval_eq(a->cell[0], a->cell[1]); }
  lval_del(a);
  return lval_num(r);
}

示例#7

文件： tosun-lisp.c 项目： ayberkt/tosun-lisp

lval* builtin_len(lval* a) {
    LASSERT(a, (a->count == 1), "Function 'head' passed too many arguments!");
    LASSERT(a, (a->cell[0]->type == LVAL_QEXPR), "Function 'head' passed incorrect type!");
    LASSERT(a, (a->cell[0]->count != 0), "Function 'head' passed {}");

    lval* v = lval_num(a->cell[0]->count);
    return v;
}

示例#8

文件： lval.c 项目： pimeys/musti

lval* lval_read_num(const mpc_ast_t* t) {
  errno = 0;
  uint64_t x = strtol(t->contents, NULL, 10);

  return errno != ERANGE
    ? lval_num(x)
    : lval_err("invalid number");
}

示例#9

文件： builtin.c 项目： burberger/blisp

lval* builtin_not(lenv* e, lval* a) {
  LASSERT_NUM("!", a, 1);
  LASSERT_TYPE("!", a, 0, LVAL_NUM);

  int r = !a->cell[0]->num;
  lval_del(a);
  return lval_num(r);
}

示例#10

文件： builtin.c 项目： burberger/blisp

lval* builtin_len(lenv* e, lval* a) {
  LASSERT_NUM("len", a, 1);
  LASSERT_TYPE("len", a, 0, LVAL_QEXPR);

  long x = a->cell[0]->count;
  lval_del(a);
  return lval_num(x);
}

示例#11

文件： glenisp.c 项目： glenjamin/buildyourownlisp

struct lval* lval_read_num(char* value) {
    errno = 0;
    long x = strtol(value, NULL, 10);
    if (errno == 0) {
        return lval_num(x);
    } else {
        return lval_err("Unknown number %s", value);
    }
}

示例#12

文件： glenisp.c 项目： glenjamin/buildyourownlisp

struct lval* lval_builtin_len(struct lenv* e, struct lval* v) {
    LNUMARGS(v, 1, "len");
    LTYPE(v, LVAL_QEXP, 0, "len");

    struct lval* x = lval_num(v->cell[0]->count);
    lval_del(v);

    return x;
}

示例#13

文件： parsing.c 项目： Bivek/buildyourownlisp

lval eval_op(lval x, char* op, lval y) {
	if (x.type == LVAL_ERR) { return x; }
	if (y.type == LVAL_ERR) { return y; }
	if (strcmp(op, "+") == 0) { return lval_num(x.num + y.num); }
	if (strcmp(op, "-") == 0) { return lval_num(x.num - y.num); }
	if (strcmp(op, "*") == 0) { return lval_num(x.num * y.num); }
	if (strcmp(op, "/") == 0) {
	       	return y.num == 0 ? lval_err(LERR_DIV_ZERO) : lval_num(x.num / y.num); 
	}
	if (strcmp(op, "%") == 0) { 
	       	return y.num == 0 ? lval_err(LERR_DIV_ZERO) : lval_num(x.num % y.num); 
	}
	if (strcmp(op, "^") == 0) { return lval_num(pow(x.num, y.num)); }
	if (strcmp(op, "min") == 0) { return x.num < y.num ? lval_num(x.num) : lval_num(y.num); }
	if (strcmp(op, "max") == 0) { return x.num > y.num ? lval_num(x.num) : lval_num(y.num); }

	return lval_err(LERR_BAD_OP);
}

示例#14

文件： lvaluation.c 项目： SeaRbSg/buildyourownlisp

/* Use operator string to see which operator to perform */
lval eval_op(lval x, char* op, lval y) {
  /* bail out on errors*/
  if (x.type == LVAL_ERR) { return x; }
  if (y.type == LVAL_ERR) { return y; }

  /* math up the numbers */
  if (strcmp(op, "+") == 0) { return lval_num(x.num + y.num); }
  if (strcmp(op, "-") == 0) { return lval_num(x.num - y.num); }
  if (strcmp(op, "*") == 0) { return lval_num(x.num * y.num); }
  if (strcmp(op, "/") == 0) { 
      return y.num == 0 ? lval_err(LERR_DIV_ZERO) : lval_num(x.num / y.num); 
    }
  if (strcmp(op, "%") == 0) { return lval_num(x.num % y.num); }
  if (strcmp(op, "^") == 0) { return our_exponent( x, y); }
  if (strcmp(op, "min") == 0) { return min( x, y); }
  if (strcmp(op, "max") == 0) { return max( x, y); }

  /* wtf lol idk */
  return lval_err(LERR_BAD_OP);
}

示例#15

文件： builtin.c 项目： burberger/blisp

lval* builtin_logic(lenv* e, lval* a, char* op) {
  LASSERT_NUM(op, a, 2);
  LASSERT_TYPE(op, a, 0, LVAL_NUM);
  LASSERT_TYPE(op, a, 1, LVAL_NUM);

  int r;
  if (strcmp(op, "&&") == 0) { r = a->cell[0]->num && a->cell[1]->num; }
  if (strcmp(op, "||") == 0) { r = a->cell[0]->num || a->cell[1]->num; }
  lval_del(a);
  return lval_num(r);
}

示例#16

文件： builtin.c 项目： burberger/blisp

lval* builtin_ord(lenv* e, lval* a, char* op) {
  LASSERT_NUM(op, a, 2);
  LASSERT_TYPE(op, a, 0, LVAL_NUM);
  LASSERT_TYPE(op, a, 1, LVAL_NUM);

  int r;
  if (strcmp(op, ">") == 0) { r = a->cell[0]->num > a->cell[1]->num; }
  if (strcmp(op, "<") == 0) { r = a->cell[0]->num < a->cell[1]->num; }
  if (strcmp(op, ">=") == 0) { r = a->cell[0]->num >= a->cell[1]->num; }
  if (strcmp(op, "<=") == 0) { r = a->cell[0]->num <= a->cell[1]->num; }

  lval_del(a);
  return lval_num(r);
}

示例#17

文件： error_handling.c 项目： jamjamnorman/learn-C

lval eval(mpc_ast_t* t) {

    if (strstr(t->tag, "number")) { 
        /*CHeck if there is some error in conversion */
        errno = 0;
        long x = strtol(t->contents, NULL, 10);
        return errno != ERANGE ? lval_num(x) : lval_err(LERR_BAD_NUM);
    }

    char* op = t->children[1]->contents;
    lval x = eval(t->children[2]);

    if (strcmp(op, "-") == 0 && !(strstr(t->children[3]->tag, "expr"))) {
        return lval_num(-x.data.num);
    }

    int i = 3;
    while (strstr(t->children[i]->tag, "expr")) {
        x = eval_op(x, op, eval(t->children[i]));
        i++;
    }

    return x;
}

示例#18

文件： lispcode.c 项目： gotchacode/buildyourownlisp

lval eval(mpc_ast_t* t) {
  if (strstr(t->tag), "number")) {
    // check if there is some error in conversion
    long x = strlol(t->content, NULL, 10);
    return errno != ERANGE ? lval_num(x): lval_err(LERR_BAD_NUM);
    }
   char* op = t->children[1]->contents;
   lval x = eval(t->children[2]);

   int i = 3;
   while (strstr(t->children[i]->tag, "expr")) {
     x = eval_op(x, op, eval(t->children[i]));
     i++;
   }

   return x;
}

示例#19

文件： error_handling.c 项目： aelk/tiny-lisp

lval eval(mpc_ast_t *t) {
    if (strstr(t->tag, "number")) {
        errno = 0;
        long x = strtol(t->contents, NULL, 10);
        return errno != ERANGE ? lval_num(x) : lval_err(LERR_BAD_NUM);
    }

    char *op = t->children[1]->contents;
    lval x = eval(t->children[2]);

    int i = 3;
    while (strstr(t->children[i]->tag, "expr")) {
        x = eval_op(x, op, eval(t->children[i]));
        i++;
    }

    return x;
}

示例#20

文件： error_handling.c 项目： junkor/BuildYourLisp

lval eval(mpc_ast_t* t){

	if(strstr(t->tag,"number")){
	    /* check if there is some error in conversion */
        errno = 0;
        long x = strtol(t->contents,NULL,10);
    	return errno != ERANGE ? lval_num(x):lval_err(LERR_BAD_NUM);
	}

	/* the operator is always second child */
	char* op = t->children[1]->contents;
	lval x = eval(t->children[2]);

	/* Iterate the remaining children and combining */
	int i = 3;
	while(strstr(t->children[i]->tag,"expr")){
		x = eval_op(x,op,eval(t->children[i]));
		i++;
	}
	return x;
}

示例#21

文件： parsing.c 项目： Bivek/buildyourownlisp

lval eval(mpc_ast_t* t) {
	if (strstr(t->tag, "number")) {
		errno = 0;
		long x = strtol(t->contents, NULL, 10);
		return errno != ERANGE ? lval_num(x) : lval_err(LERR_BAD_NUM);
	}

	char* op = t->children[1]->contents;

	lval x = eval(t->children[2]);

	int i = 3;
	while (strstr(t->children[i]->tag, "expr")) {
		x = eval_op(x, op, eval(t->children[i]));
		i++;
	}

	/* if '-' has only one argument, negate it. */
	if(strcmp(op, "-") == 0 && i == 3) {
		x.num = x.num * -1;
	}

	return x;
}

示例#22

文件： prompt.c 项目： leechannl/learning

lval eval(mpc_ast_t* t)
{
    /* If tagged as number return it directly, otherwise expression. */
    if (strstr(t->tag, "number")) {
        errno = 0;
        long x = strtol(t->contents, NULL, 10);
        return errno != ERANGE ? lval_num(x) : lval_err(LERR_BAD_NUM);
    }

    /* The operator is always second child. */
    char* op = t->children[1]->contents;

    /* We store the third child in `x` */
    lval x = eval(t->children[2]);

    /* Iterate the remaining children, combining using our operator. */
    int i = 3;
    while (strstr(t->children[i]->tag, "expr")){
        x = eval_op(x, op, eval(t->children[i]));
        i++;
    }

    return x;
}

示例#23

文件： error_handling.c 项目： eapolinario/lisp-in-c

lval eval_op(lval x, char* op, lval y) {
  if (x.type == LVAL_ERR) {
    return x;
  }
  if (y.type == LVAL_ERR) {
    return y;
  }

  if (strcmp(op, "+") == 0) {
    if (x.type == y.type) {
      if (x.type == LVAL_NUM) {
        return lval_num(x.l + y.l);
      } else {
        return lval_double(x.d + y.d);
      }
    } else if (x.type == LVAL_DOUBLE) {
      return lval_double(x.d + y.l);
    } else if (y.type == LVAL_DOUBLE) {
      return lval_double(x.l + y.d);
    }
  }
  if (strcmp(op, "-") == 0) {
    if (x.type == y.type) {
      if (x.type == LVAL_NUM) {
        return lval_num(x.l - y.l);
      } else {
        return lval_double(x.d - y.d);
      }
    } else if (x.type == LVAL_DOUBLE) {
      return lval_double(x.d - y.l);
    } else if (y.type == LVAL_DOUBLE) {
      return lval_double(x.l - y.d);
    }
  }
  if (strcmp(op, "*") == 0) {
    if (x.type == y.type) {
      if (x.type == LVAL_NUM) {
        return lval_num(x.l * y.l);
      } else {
        return lval_double(x.d * y.d);
      }
    } else if (x.type == LVAL_DOUBLE) {
      return lval_double(x.d * y.l);
    } else if (y.type == LVAL_DOUBLE) {
      return lval_double(x.l * y.d);
    }
  }
  if (strcmp(op, "/") == 0) {
    if ((y.type == LVAL_NUM && y.l == 0) || (y.type == LVAL_DOUBLE && y.d == 0)) {
      return lval_err(LERR_DIV_ZERO);
    } else {
      if (x.type == y.type) {
        if (x.type == LVAL_NUM) {
          return lval_num(x.l / y.l);
        } else {
          return lval_double(x.d / y.d);
        }
      } else if (x.type == LVAL_DOUBLE) {
        return lval_double(x.d / y.l);
      } else if (y.type == LVAL_DOUBLE) {
        return lval_double(x.l / y.d);
      }
    }
  }
  if (strcmp(op, "%") == 0) {
    if (! (x.type == LVAL_NUM && y.type == LVAL_NUM)) {
      return lval_err(LERR_BAD_OP);
    } else {
      if (y.l == 0) {
        return lval_err(LERR_DIV_ZERO);
      } else {
        return lval_num(x.l % y.l);
      }
    }
  }

  return lval_err(LERR_BAD_OP);
}

示例#24

文件： ast.c 项目： catwell/ownlisp

lval * ast_read_num(mpc_ast_t *t) {
    assert(strstr(t->tag, "number"));
    long x = strtol(t->contents, NULL, 10);
    if (errno == ERANGE) return LERR_BAD_NUM;
    return lval_num(x);
}