C++ rb_ary_push函数代码示例

/*
 * call-seq:
 *
 *    API::Function.new(address, prototype = 'V', return_type = 'L')
 *
 * Creates and returns an API::Function object. This object is similar to an
 * API object, except that instead of a character function name you pass a
 * function pointer address as the first argument, and there's no associated
 * DLL file.
 *
 * Once you have your API::Function object you can then call it the same way
 * you would an API object.
 *
 * Example:
 *
 *    require 'win32/api'
 *    include Win32
 *
 *    LoadLibrary = API.new('LoadLibrary', 'P', 'L')
 *    GetProcAddress = API.new('GetProcAddress', 'LP', 'L')
 *
 *    # Play a system beep
 *    hlib = LoadLibrary.call('user32')
 *    addr = GetProcAddress.call(hlib, 'MessageBeep')
 *    func = Win32::API::Function.new(addr, 'L', 'L')
 *    func.call(0)
 */
static VALUE func_init(int argc, VALUE* argv, VALUE self){
   Win32API* ptr;
   int i;
   VALUE v_address, v_proto, v_return;

   rb_scan_args(argc, argv, "12", &v_address, &v_proto, &v_return);

   Data_Get_Struct(self, Win32API, ptr);

   // Convert a string prototype to an array of characters
   if(rb_respond_to(v_proto, rb_intern("split")))
      v_proto = rb_str_split(v_proto, "");

   // Convert a nil or empty prototype to 'V' (void) automatically
   if(NIL_P(v_proto) || RARRAY_LEN(v_proto) == 0){
      v_proto = rb_ary_new();
      rb_ary_push(v_proto, rb_str_new2("V"));
   }

   // Set an arbitrary limit of 20 parameters
   if(20 < RARRAY_LEN(v_proto))
      rb_raise(rb_eArgError, "too many parameters: %d\n", RARRAY_LEN(v_proto));

   // Set the default return type to 'L' (DWORD)
   if(NIL_P(v_return))
      v_return = rb_str_new2("L");

   ptr->function = (FARPROC)NUM2LONG(v_address);

   // Push the numeric prototypes onto our int array for later use.

   for(i = 0; i < RARRAY_LEN(v_proto); i++){
      SafeStringValue(RARRAY_PTR(v_proto)[i]);
      switch(*(char*)StringValuePtr(RARRAY_PTR(v_proto)[i])){
         case 'L':
            ptr->prototype[i] = _T_LONG;
            break;
         case 'P':
            ptr->prototype[i] = _T_POINTER;
            break;
         case 'I': case 'B':
            ptr->prototype[i] = _T_INTEGER;
            break;
         case 'V':
            ptr->prototype[i] = _T_VOID;
            break;
         case 'K':
            ptr->prototype[i] = _T_CALLBACK;
            break;
         case 'S':
            ptr->prototype[i] = _T_STRING;
            break;
         default:
            rb_raise(cAPIProtoError, "Illegal prototype '%s'",
               StringValuePtr(RARRAY_PTR(v_proto)[i])
            );
      }
   }

   // Store the return type for later use.

   // Automatically convert empty strings or nil to type void.
   if(NIL_P(v_return) || RSTRING_LEN(v_return) == 0){
      v_return = rb_str_new2("V");
      ptr->return_type = _T_VOID;
   }
   else{
      SafeStringValue(v_return);
      switch(*RSTRING_PTR(v_return)){
         case 'L':
            ptr->return_type = _T_LONG;
            break;
         case 'P':
//.........这里部分代码省略.........

/* Hash#foreach callback for ruby_curl_multi_requests */
static int ruby_curl_multi_requests_callback(VALUE key, VALUE value, VALUE result_array) {
  rb_ary_push(result_array, value);
  
  return ST_CONTINUE;
}

static VALUE oci8_lob_read(int argc, VALUE *argv, VALUE self)
{
    oci8_lob_t *lob = DATA_PTR(self);
    oci8_svcctx_t *svcctx = oci8_get_svcctx(lob->svc);
    ub4 length;
    ub4 nchar;
    ub4 amt;
    sword rv;
    char buf[8192];
    size_t buf_size_in_char;
    VALUE size;
    VALUE v = rb_ary_new();

    rb_scan_args(argc, argv, "01", &size);
    length = oci8_lob_get_length(lob);
    if (length <= lob->pos) /* EOF */
        return Qnil;
    length -= lob->pos;
    if (NIL_P(size)) {
        nchar = length; /* read until EOF */
    } else {
        nchar = NUM2UINT(size);
        if (nchar > length)
            nchar = length;
    }
    amt = nchar;
    buf_size_in_char = sizeof(buf) / lob->char_width;
    do {
        if (lob->state == S_BFILE_CLOSE) {
            rv = OCILobFileOpen_nb(svcctx, svcctx->base.hp.svc, oci8_errhp, lob->base.hp.lob, OCI_FILE_READONLY);
            if (rv == OCI_ERROR && oci8_get_error_code(oci8_errhp) == 22290) {
                /* ORA-22290: operation would exceed the maximum number of opened files or LOBs */
                /* close all opened BFILE implicitly. */
                oci8_base_t *base;
                for (base = &lob->base; base != &lob->base; base = base->next) {
                    if (base->type == OCI_DTYPE_LOB) {
                        oci8_lob_t *tmp = (oci8_lob_t *)base;
                        if (tmp->state == S_BFILE_OPEN) {
                            tmp->state = S_BFILE_CLOSE;
                        }
                    }
                }
                oci_lc(OCILobFileCloseAll_nb(svcctx, svcctx->base.hp.svc, oci8_errhp));
                continue;
            }
            if (rv != OCI_SUCCESS)
                oci8_raise(oci8_errhp, rv, NULL);
            lob->state = S_BFILE_OPEN;
        }
        /* initialize buf in zeros everytime to check a nul characters. */
        memset(buf, 0, sizeof(buf));
        rv = OCILobRead_nb(svcctx, svcctx->base.hp.svc, oci8_errhp, lob->base.hp.lob, &amt, lob->pos + 1, buf, sizeof(buf), NULL, NULL, 0, lob->csfrm);
        if (rv == OCI_ERROR && oci8_get_error_code(oci8_errhp) == 22289) {
            /* ORA-22289: cannot perform FILEREAD operation on an unopened file or LOB */
            if (lob->state == S_BFILE_CLOSE)
                continue;
        }
        if (rv != OCI_SUCCESS && rv != OCI_NEED_DATA)
            oci8_raise(oci8_errhp, rv, NULL);

        /* Workaround when using Oracle 10.2.0.4 or 11.1.0.6 client and
         * variable-length character set (e.g. AL32UTF8).
         *
         * When the above mentioned condition, amt may be shorter. So
         * amt is increaded until a nul character to know the actually
         * read size.
         */
        while (amt < sizeof(buf) && buf[amt] != '\0') {
            amt++;
        }

        if (amt == 0)
            break;
        /* for fixed size charset, amt is the number of characters stored in buf. */
        if (amt > buf_size_in_char)
            rb_raise(eOCIException, "Too large buffer fetched or you set too large size of a character.");
        amt *= lob->char_width;
        rb_ary_push(v, rb_str_new(buf, amt));
    } while (rv == OCI_NEED_DATA);
    lob->pos += nchar;
    if (nchar == length) {
        lob_close(lob);
        bfile_close(lob);
    }
    if (RARRAY_LEN(v) == 0) {
        return Qnil;
    }
    v = rb_ary_join(v, Qnil);
    OBJ_TAINT(v);
    if (lob->lobtype == OCI_TEMP_CLOB) {
        /* set encoding */
        rb_enc_associate(v, oci8_encoding);
        return rb_str_conv_enc(v, oci8_encoding, rb_default_internal_encoding());
    } else {
        /* ASCII-8BIT */
        return v;
    }
}

static NODE *
build_Array_each_node(rb_iseq_t *iseq, NODE * node, NODE * lnode,
		      VALUE param_vars, VALUE local_vars)
{
    /* Special block for Array#each
       ary.each{|e|
       BODY
       }
       =>
       {|e, _self|
       _i = 0
       while _i < _self.length
       e = _self[_i]
       redo_point:
       BODY
       next_point:
       _i = _i.succ
       end
       }

       ary.each{
       BODY
       }
       =>
       {|_i, _self|
       _i = 0
       while _i < _self.length
       redo_point:
       BODY
       next_point:
       _i = _i.succ
       end
       }
     */

    ID _self = rb_intern("#_self");
    ID _i = rb_intern("#_i");

    if (iseq->argc == 0) {
	ID _e = rb_intern("#_e");
	rb_ary_push(param_vars, ID2SYM(_e));
	rb_ary_push(param_vars, ID2SYM(_self));
	iseq->argc += 2;
	rb_ary_push(local_vars, ID2SYM(_i));

	node =
	    new_block(NEW_DASGN(_i, NEW_LIT(INT2FIX(0))),
		      NEW_WHILE(NEW_CALL(NEW_DVAR(_i), idLT,
					 new_ary(NEW_CALL
						 (NEW_DVAR(_self), idLength,
						  0), 0)),
				new_block(NEW_OPTBLOCK(node),
					  NEW_DASGN(_i,
						    NEW_CALL(NEW_DVAR(_i),
							     idSucc, 0))),
				Qundef));
    }
    else {
	ID e = SYM2ID(rb_ary_entry(param_vars, 0));
	NODE *assign;

	rb_ary_push(param_vars, ID2SYM(_self));
	iseq->argc++;
	rb_ary_push(local_vars, ID2SYM(_i));

	if (nd_type(lnode) == NODE_DASGN_CURR) {
	    assign = NEW_DASGN(e,
			       NEW_CALL(NEW_DVAR(_self), idAREF,
					new_ary(NEW_DVAR(_i), 0)));
	}
	else {
	    assign = new_assign(lnode,
				NEW_CALL(NEW_DVAR(_self), idAREF,
					 new_ary(NEW_DVAR(_i), 0)));
	}

	node =
	    new_block(NEW_DASGN(_i, NEW_LIT(INT2FIX(0))),
		      NEW_WHILE(NEW_CALL(NEW_DVAR(_i), idLT,
					 new_ary(NEW_CALL
						 (NEW_DVAR(_self), idLength,
						  0), 0)), new_block(assign,
								     new_block
								     (NEW_OPTBLOCK
								      (node),
								      NEW_DASGN
								      (_i,
								       NEW_CALL
								       (NEW_DVAR
									(_i),
									idSucc,
									0)))),
				Qundef));
    }
    return node;
}

static void
rb_provide_feature(VALUE feature)
{
    rb_ary_push(get_loaded_features(), feature);
}

static VALUE get_value(const char* buffer, int* position, int type) {
    VALUE value;
    switch (type) {
    case 1:
        {
            double d;
            memcpy(&d, buffer + *position, 8);
            value = rb_float_new(d);
            *position += 8;
            break;
        }
    case 2:
    case 13:
        {
            *position += 4;
            int value_length = strlen(buffer + *position);
            value = rb_str_new(buffer+ *position, value_length);
            *position += value_length + 1;
            break;
        }
    case 3:
        {
            int size;
            memcpy(&size, buffer + *position, 4);
            if (strcmp(buffer + *position + 5, "$ref") == 0) { // DBRef
                int offset = *position + 14;
                VALUE argv[2];
                int collection_length = strlen(buffer + offset);
                argv[0] = rb_str_new(buffer + offset, collection_length);
                offset += collection_length + 1;
                char id_type = buffer[offset];
                offset += 5;
                argv[1] = get_value(buffer, &offset, (int)id_type);
                value = rb_class_new_instance(2, argv, DBRef);
            } else {
                value = elements_to_hash(buffer + *position + 4, size - 5);
            }
            *position += size;
            break;
        }
    case 4:
        {
            int size;
            memcpy(&size, buffer + *position, 4);
            int end = *position + size - 1;
            *position += 4;

            value = rb_ary_new();
            while (*position < end) {
                int type = (int)buffer[(*position)++];
                int key_size = strlen(buffer + *position);
                *position += key_size + 1; // just skip the key, they're in order.
                VALUE to_append = get_value(buffer, position, type);
                rb_ary_push(value, to_append);
            }
            (*position)++;
            break;
        }
    case 5:
        {
            int length;
            memcpy(&length, buffer + *position, 4);
            int subtype = (unsigned char)buffer[*position + 4];
            VALUE data;
            if (subtype == 2) {
                data = rb_str_new(buffer + *position + 9, length - 4);
            } else {
                data = rb_str_new(buffer + *position + 5, length);
            }
            VALUE st = INT2FIX(subtype);
            VALUE argv[2] = {data, st};
            value = rb_class_new_instance(2, argv, Binary);
            *position += length + 5;
            break;
        }
    case 6:
        {
            value = rb_class_new_instance(0, NULL, Undefined);
            break;
        }
    case 7:
        {
            VALUE str = rb_str_new(buffer + *position, 12);
            VALUE oid = rb_funcall(str, rb_intern("unpack"), 1, rb_str_new2("C*"));
            value = rb_class_new_instance(1, &oid, ObjectID);
            *position += 12;
            break;
        }
    case 8:
        {
            value = buffer[(*position)++] ? Qtrue : Qfalse;
            break;
        }
    case 9:
        {
            long long millis;
            memcpy(&millis, buffer + *position, 8);
            VALUE seconds = INT2NUM(millis / 1000);
            VALUE microseconds = INT2NUM((millis % 1000) * 1000);

//.........这里部分代码省略.........

static NODE *
build_Integer_times_node(rb_iseq_t *iseq, NODE * node, NODE * lnode,
			 VALUE param_vars, VALUE local_vars)
{
    /* Special Block for Integer#times
       {|e, _self|
       _e = e
       while(e < _self)
       e = _e
       redo_point:
       BODY
       next_point:
       _e = _e.succ
       end
       }

       {|e, _self|
       while(e < _self)
       BODY
       next_point:
       e = e.succ
       end
       }
     */
    ID _self = rb_intern("#_self");
    if (iseq->argc == 0) {
	ID e = rb_intern("#e");
	rb_ary_push(param_vars, ID2SYM(e));
	rb_ary_push(param_vars, ID2SYM(_self));
	iseq->argc += 2;

	node =
	    NEW_WHILE(NEW_CALL
		      (NEW_DVAR(e), idLT, new_ary(NEW_DVAR(_self), 0)),
		      new_block(NEW_OPTBLOCK(node),
				NEW_DASGN(e,
					  NEW_CALL(NEW_DVAR(e), idSucc, 0))),
		      Qundef);
    }
    else {
	ID _e = rb_intern("#_e");
	ID e = SYM2ID(rb_ary_entry(param_vars, 0));
	NODE *assign;

	rb_ary_push(param_vars, ID2SYM(_self));
	rb_ary_push(local_vars, ID2SYM(_e));
	iseq->argc++;

	if (nd_type(lnode) == NODE_DASGN_CURR) {
	    assign = NEW_DASGN(e, NEW_DVAR(_e));
	}
	else {
	    assign = new_assign(lnode, NEW_DVAR(_e));
	}

	node =
	    new_block(NEW_DASGN(_e, NEW_DVAR(e)),
		      NEW_WHILE(NEW_CALL
				(NEW_DVAR(_e), idLT,
				 new_ary(NEW_DVAR(_self), 0)),
				new_block(assign,
					  new_block(NEW_OPTBLOCK(node),
						    NEW_DASGN(_e,
							      NEW_CALL
							      (NEW_DVAR(_e),
							       idSucc, 0)))),
				Qundef));
    }
    return node;
}

static VALUE rb_keychain_find(int argc, VALUE *argv, VALUE self){

  VALUE kind;
  VALUE attributes;
  VALUE first_or_all;
  rb_scan_args(argc, argv, "2:", &first_or_all, &kind, &attributes);

  Check_Type(first_or_all, T_SYMBOL);
  Check_Type(kind, T_STRING);
  
  CFMutableDictionaryRef query = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

  CFDictionarySetValue(query, kSecReturnAttributes, kCFBooleanTrue);
  CFDictionarySetValue(query, kSecReturnRef, kCFBooleanTrue);
  

  if(rb_to_id(first_or_all) == rb_intern("all")){
    CFDictionarySetValue(query, kSecMatchLimit, kSecMatchLimitAll);
  }

  rb_add_value_to_cf_dictionary(query, kSecClass, kind);


  if(!NIL_P(attributes)){
    Check_Type(attributes, T_HASH);
    VALUE rb_keychains = rb_hash_aref(attributes, ID2SYM(rb_intern("keychains")));
    if(!NIL_P(rb_keychains)){
      Check_Type(rb_keychains, T_ARRAY);
      CFMutableArrayRef searchArray = CFArrayCreateMutable(NULL, RARRAY_LEN(rb_keychains), &kCFTypeArrayCallBacks);
      for(int index=0; index < RARRAY_LEN(rb_keychains); index++){
        SecKeychainRef keychain = NULL;
        Data_Get_Struct(RARRAY_PTR(rb_keychains)[index], struct OpaqueSecKeychainRef, keychain);
        CFArrayAppendValue(searchArray, keychain);
      }
      CFDictionarySetValue(query, kSecMatchSearchList,searchArray);
      CFRelease(searchArray);
    }  

    VALUE limit = rb_hash_aref(attributes, ID2SYM(rb_intern("limit")));
    if(!NIL_P(limit)){
      Check_Type(limit, T_FIXNUM);
      long c_limit = FIX2LONG(limit);
      CFNumberRef cf_limit = CFNumberCreate(NULL, kCFNumberLongType, &c_limit);
      CFDictionarySetValue(query, kSecMatchLimit, cf_limit);
      CFRelease(cf_limit);
    }

    VALUE conditions = rb_hash_aref(attributes, ID2SYM(rb_intern("conditions")));
    
    if(!NIL_P(conditions)){
      Check_Type(conditions, T_HASH);
      VALUE rQuery = Data_Wrap_Struct(rb_cPointerWrapper, NULL, NULL, query);
      rb_block_call(conditions, rb_intern("each"), 0, NULL, RUBY_METHOD_FUNC(add_conditions_to_query), rQuery);
    }
  }

  CFDictionaryRef result;

  OSStatus status = SecItemCopyMatching(query, (CFTypeRef*)&result);
  CFRelease(query);

  VALUE rb_item = rb_ary_new2(0);

  switch(status){
    case errSecItemNotFound: 
      break;
    default:
    CheckOSStatusOrRaise(status);
    if(CFArrayGetTypeID() == CFGetTypeID(result)){
      CFArrayRef result_array = (CFArrayRef)result;
      for(CFIndex i = 0; i < CFArrayGetCount(result_array); i++){
        rb_ary_push(rb_item,rb_keychain_item_from_sec_dictionary(CFArrayGetValueAtIndex(result_array,i)));
      }
    }
    else{
      rb_ary_push(rb_item, rb_keychain_item_from_sec_dictionary(result));
    }
    CFRelease(result);
  }

  if(rb_to_id(first_or_all) == rb_intern("first")){
    return rb_ary_entry(rb_item,0);
  }
  else{
    return rb_item;
  }
}

VALUE machine_marshal_dump( VALUE self ) {
  VALUE ary = rb_ary_new();
  VALUE dynamic, stack;
  long i;
  zmachine *zm;

  Data_Get_Struct( self, zmachine, zm );

  rb_ary_push( ary, rb_iv_get( self, "@program" ) );
  rb_ary_push( ary, rb_iv_get( self, "@output" ) );
  rb_ary_push( ary, rb_iv_get( self, "@keyboard" ) );
  rb_ary_push( ary, rb_iv_get( self, "@rng" ) );

  dynamic = rb_ary_new();
  for( i = 0; i < zm->m->dynamic_length; i++ ) {
    rb_ary_push( dynamic, UINT2NUM(zm->m->m_dynamic[i]) );
  }

  rb_ary_push( ary, dynamic );

  stack = rb_ary_new();
  for( i = 0; i < STACK_SIZE; i++ ) {
    rb_ary_push( stack, UINT2NUM(zm->stack[i]) );
  }

  rb_ary_push( ary, stack );

  rb_ary_push( ary, UINT2NUM(PC(zm)) );
  rb_ary_push( ary, UINT2NUM(zm->sp - zm->stack) );
  rb_ary_push( ary, UINT2NUM(zm->fp - zm->stack) );
  rb_ary_push( ary, UINT2NUM(zm->frame_count) );
  rb_ary_push( ary, UINT2NUM(zm->finished) );

  return ary;
}

static VALUE read_anything(VALUE protocol, field_metadata* fmd, protocol_method_table *pmt) {
  VALUE result = Qnil;

  if (fmd->type == TTYPE_BOOL) {
    result = fastcall_call(pmt->read_bool, protocol, Qnil);
  } else if (fmd->type == TTYPE_BYTE) {
    result = fastcall_call(pmt->read_byte, protocol, Qnil);
  } else if (fmd->type == TTYPE_I16) {
    result = fastcall_call(pmt->read_i16, protocol, Qnil);
  } else if (fmd->type == TTYPE_I32) {
    result = fastcall_call(pmt->read_i32, protocol, Qnil);
  } else if (fmd->type == TTYPE_I64) {
    result = fastcall_call(pmt->read_i64, protocol, Qnil);
  } else if (fmd->type == TTYPE_STRING) {
    result = fastcall_call(pmt->read_string, protocol, Qnil);
  } else if (fmd->type == TTYPE_DOUBLE) {
    result = fastcall_call(pmt->read_double, protocol, Qnil);
  } else if (fmd->type == TTYPE_STRUCT) {

    result = rb_class_new_instance(0, NULL, fmd->klass_v);

    if (rb_obj_is_kind_of(result, thrift_union_class)) {
      union_read(result, protocol, pmt);
    } else {
      struct_read(result, protocol, pmt);
    }
  } else if (fmd->type == TTYPE_MAP) {
    int i;

    VALUE map_header = fastcall_call(pmt->read_map_begin, protocol, Qnil);
    int key_ttype = FIX2INT(rb_ary_entry(map_header, 0));
    int value_ttype = FIX2INT(rb_ary_entry(map_header, 1));
    int num_entries = FIX2INT(rb_ary_entry(map_header, 2));

    // Check the declared key and value types against the expected ones and skip the map contents
    // if the types don't match.
    field_metadata* key_md = fmd->key;
    field_metadata* value_md = fmd->value;

    if (key_md && value_md) {
      int specified_key_type = key_md->type;
      int specified_value_type = value_md->type;
      if (num_entries == 0 || (specified_key_type == key_ttype && specified_value_type == value_ttype)) {
        result = rb_hash_new();

        for (i = 0; i < num_entries; ++i) {
          VALUE key, val;

          key = read_anything(protocol, key_md, pmt);
          val = read_anything(protocol, value_md, pmt);

          rb_hash_aset(result, key, val);
        }
      } else {
        skip_map_contents(protocol, INT2FIX(key_ttype), INT2FIX(value_ttype), num_entries);
      }
    } else {
      skip_map_contents(protocol, INT2FIX(key_ttype), INT2FIX(value_ttype), num_entries);
    }

    fastcall_call(pmt->read_map_end, protocol, Qnil);
  } else if (fmd->type == TTYPE_LIST) {
    int i;

    VALUE list_header = fastcall_call(pmt->read_list_begin, protocol, Qnil);
    int element_ttype = FIX2INT(rb_ary_entry(list_header, 0));
    int num_elements = FIX2INT(rb_ary_entry(list_header, 1));

    // Check the declared element type against the expected one and skip the list contents
    // if the types don't match.
    field_metadata* element_md = fmd->element;

    if (element_md) {
      int specified_element_type = element_md->type;
      if (specified_element_type == element_ttype) {
        result = rb_ary_new2(num_elements);

        for (i = 0; i < num_elements; ++i) {
          rb_ary_push(result, read_anything(protocol, element_md, pmt));
        }
      } else {
        skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
      }
    } else {
      skip_list_or_set_contents(protocol, INT2FIX(element_ttype), num_elements);
    }

    fastcall_call(pmt->read_list_end, protocol, Qnil);
  } else if (fmd->type == TTYPE_SET) {
    VALUE items;
    int i;

    VALUE set_header = fastcall_call(pmt->read_set_begin, protocol, Qnil);
    int element_ttype = FIX2INT(rb_ary_entry(set_header, 0));
    int num_elements = FIX2INT(rb_ary_entry(set_header, 1));

    // Check the declared element type against the expected one and skip the set contents
    // if the types don't match.
    field_metadata* element_md = fmd->element;
    if (element_md) {
//.........这里部分代码省略.........

static VALUE
rb_matrix_form(VALUE self, VALUE n)
{
    VALUE base_ary;
    VALUE res_ary;
    VALUE tmp_ary;
    long ary_len = 2;

    if(TYPE(n) != T_FIXNUM)
    {
        rb_raise(rb_eArgError, "Invalid argument for type Fixnum");
        return Qnil;
    }

    if(RTEST(rb_funcall(n, id_lt, 1, ZERO)))
    {
        rb_raise(rb_eArgError, "n cannot be negative");
        return Qnil;
    }
    else
    {
        base_ary = rb_ary_new2(ARY_LEN);
        res_ary =  rb_ary_new2(ARY_LEN);
        tmp_ary = rb_ary_new2(ARY_LEN);

        /* base is {{1, 1}, {1, 0}} */
        rb_ary_push(tmp_ary, ONE);
        rb_ary_push(tmp_ary, ONE);
        rb_ary_push(base_ary, tmp_ary);

        tmp_ary = rb_ary_new2(ARY_LEN);
        rb_ary_push(tmp_ary, ONE);
        rb_ary_push(tmp_ary, ZERO);
        rb_ary_push(base_ary, tmp_ary);

        /* res is {{1, 0}, {0, 1}} */
        tmp_ary = rb_ary_new2(ARY_LEN);
        rb_ary_push(tmp_ary, ONE);
        rb_ary_push(tmp_ary, ZERO);
        rb_ary_push(res_ary, tmp_ary);

        tmp_ary = rb_ary_new2(ARY_LEN);
        rb_ary_push(tmp_ary, ZERO);
        rb_ary_push(tmp_ary, ONE);
        rb_ary_push(res_ary, tmp_ary);

        while(!rb_equal(n, ZERO))
        {
            if(rb_equal(rb_funcall(n, id_mod, 1, TWO), ZERO))
            {
                n = rb_funcall(n, id_div, 1, TWO);
                base_ary = rb_matrix_mul(base_ary, base_ary);
            }
            else
            {
                n = rb_funcall(n, id_minus, 1, ONE);
                res_ary = rb_matrix_mul(res_ary, base_ary);
            }
        }
    }

    return res_ary;
}

/*
 * call-seq:
 *    Win32::API#call(arg1, arg2, ...)
 *
 * Calls the function pointer with the given arguments (if any). Note that,
 * while this method will catch some prototype mismatches (raising a TypeError
 * in the process), it is not fulproof.  It is ultimately your job to make
 * sure the arguments match the +prototype+ specified in the constructor.
 *
 * For convenience, nil is converted to NULL, true is converted to TRUE (1)
 * and false is converted to FALSE (0).
 */
static VALUE api_call(int argc, VALUE* argv, VALUE self){
   VALUE v_proto, v_args, v_arg, v_return;
   Win32API* ptr;
   unsigned long return_value;
   int i = 0;
   int len;

   struct{
      unsigned long params[20];
   } param;

   Data_Get_Struct(self, Win32API, ptr);

   rb_scan_args(argc, argv, "0*", &v_args);

   v_proto = rb_iv_get(self, "@prototype");

   // For void prototypes, allow either no args or an explicit nil
   if(RARRAY_LEN(v_proto) != RARRAY_LEN(v_args)){
      char* c = StringValuePtr(RARRAY_PTR(v_proto)[0]);
      if(!strcmp(c, "V")){
         rb_ary_push(v_args, Qnil);
      }
      else{
         rb_raise(rb_eArgError,
            "wrong number of parameters: expected %d, got %d",
            RARRAY_LEN(v_proto), RARRAY_LEN(v_args)
         );
      }
   }

   len = RARRAY_LEN(v_proto);

   for(i = 0; i < len; i++){
      v_arg = RARRAY_PTR(v_args)[i];

      // Convert nil to NULL.  Otherwise convert as appropriate.
      if(NIL_P(v_arg))
         param.params[i] = (unsigned long)NULL;
      else if(v_arg == Qtrue)
         param.params[i] = TRUE;
      else if(v_arg == Qfalse)
         param.params[i] = FALSE;
      else
         switch(ptr->prototype[i]){
            case _T_LONG:
               param.params[i] = NUM2ULONG(v_arg);
               break;
            case _T_INTEGER:
               param.params[i] = NUM2INT(v_arg);
               break;
            case _T_POINTER:
               if(FIXNUM_P(v_arg)){
                  param.params[i] = NUM2ULONG(v_arg);
               }
               else{
                  StringValue(v_arg);
                  rb_str_modify(v_arg);
                  param.params[i] = (unsigned long)StringValuePtr(v_arg);
               }
               break;
            case _T_CALLBACK:
               ActiveCallback = v_arg;
               v_proto = rb_iv_get(ActiveCallback, "@prototype");
               param.params[i] = (LPARAM)NUM2ULONG(rb_iv_get(ActiveCallback, "@address"));;
               break;
            case _T_STRING:
               param.params[i] = (unsigned long)RSTRING_PTR(v_arg);
               break;
            default:
               param.params[i] = NUM2ULONG(v_arg);
         }
   }

   /* Call the function, get the return value */
   return_value = ptr->function(param);


   /* Return the appropriate type based on the return type specified
    * in the constructor.
    */
   switch(ptr->return_type){
      case _T_INTEGER:
         v_return = INT2NUM(return_value);
         break;
      case _T_LONG:
         v_return = ULONG2NUM(return_value);
         break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
          char msec_char[7] = {'0','0','0','0','0','0','\0'};
          uint64_t seconds;

          tokens = sscanf(row[i], "%4u-%2u-%2u %2u:%2u:%2u.%6s", &year, &month, &day, &hour, &min, &sec, msec_char);
          if (tokens < 6) { /* msec might be empty */
            val = Qnil;
            break;
          }
          seconds = (year*31557600ULL) + (month*2592000ULL) + (day*86400ULL) + (hour*3600ULL) + (min*60ULL) + sec;

          if (seconds == 0) {
            val = Qnil;
          } else {
            if (month < 1 || day < 1) {
              rb_raise(cMysql2Error, "Invalid date in field '%.*s': %s", fields[i].name_length, fields[i].name, row[i]);
              val = Qnil;
            } else {
              if (seconds < MYSQL2_MIN_TIME || seconds > MYSQL2_MAX_TIME) { /* use DateTime for larger date range, does not support microseconds */
                VALUE offset = INT2NUM(0);
                if (args->db_timezone == intern_local) {
                  offset = rb_funcall(cMysql2Client, intern_local_offset, 0);
                }
                val = rb_funcall(cDateTime, intern_civil, 7, UINT2NUM(year), UINT2NUM(month), UINT2NUM(day), UINT2NUM(hour), UINT2NUM(min), UINT2NUM(sec), offset);
                if (!NIL_P(args->app_timezone)) {
                  if (args->app_timezone == intern_local) {
                    offset = rb_funcall(cMysql2Client, intern_local_offset, 0);
                    val = rb_funcall(val, intern_new_offset, 1, offset);
                  } else { /* utc */
                    val = rb_funcall(val, intern_new_offset, 1, opt_utc_offset);
                  }
                }
              } else {
                msec = msec_char_to_uint(msec_char, sizeof(msec_char));
                val = rb_funcall(rb_cTime, args->db_timezone, 7, UINT2NUM(year), UINT2NUM(month), UINT2NUM(day), UINT2NUM(hour), UINT2NUM(min), UINT2NUM(sec), UINT2NUM(msec));
                if (!NIL_P(args->app_timezone)) {
                  if (args->app_timezone == intern_local) {
                    val = rb_funcall(val, intern_localtime, 0);
                  } else { /* utc */
                    val = rb_funcall(val, intern_utc, 0);
                  }
                }
              }
            }
          }
          break;
        }
        case MYSQL_TYPE_DATE:       /* DATE field */
        case MYSQL_TYPE_NEWDATE: {  /* Newer const used > 5.0 */
          int tokens;
          unsigned int year=0, month=0, day=0;
          tokens = sscanf(row[i], "%4u-%2u-%2u", &year, &month, &day);
          if (tokens < 3) {
            val = Qnil;
            break;
          }
          if (year+month+day == 0) {
            val = Qnil;
          } else {
            if (month < 1 || day < 1) {
              rb_raise(cMysql2Error, "Invalid date in field '%.*s': %s", fields[i].name_length, fields[i].name, row[i]);
              val = Qnil;
            } else {
              val = rb_funcall(cDate, intern_new, 3, UINT2NUM(year), UINT2NUM(month), UINT2NUM(day));
            }
          }
          break;
        }
        case MYSQL_TYPE_TINY_BLOB:
        case MYSQL_TYPE_MEDIUM_BLOB:
        case MYSQL_TYPE_LONG_BLOB:
        case MYSQL_TYPE_BLOB:
        case MYSQL_TYPE_VAR_STRING:
        case MYSQL_TYPE_VARCHAR:
        case MYSQL_TYPE_STRING:     /* CHAR or BINARY field */
        case MYSQL_TYPE_SET:        /* SET field */
        case MYSQL_TYPE_ENUM:       /* ENUM field */
        case MYSQL_TYPE_GEOMETRY:   /* Spatial fielda */
        default:
          val = rb_str_new(row[i], fieldLengths[i]);
#ifdef HAVE_RUBY_ENCODING_H
          val = mysql2_set_field_string_encoding(val, fields[i], default_internal_enc, conn_enc);
#endif
          break;
        }
      }
      if (args->asArray) {
        rb_ary_push(rowVal, val);
      } else {
        rb_hash_aset(rowVal, field, val);
      }
    } else {
      if (args->asArray) {
        rb_ary_push(rowVal, Qnil);
      } else {
        rb_hash_aset(rowVal, field, Qnil);
      }
    }
  }
  return rowVal;
}

/* Convert an OR'd list of KMODs into a Ruby array of keysyms. */
VALUE convert_keymod( SDLMod mods )
{
  VALUE array;

  array = rb_ary_new();
  if(mods != 0)
  {
    /*        KEY MODIFIER                              KEY SYM */
    if(mods & KMOD_LSHIFT)   rb_ary_push(array,INT2NUM( SDLK_LSHIFT    ));
    if(mods & KMOD_RSHIFT)   rb_ary_push(array,INT2NUM( SDLK_RSHIFT    ));
    if(mods & KMOD_LCTRL)    rb_ary_push(array,INT2NUM( SDLK_LCTRL     ));
    if(mods & KMOD_RCTRL)    rb_ary_push(array,INT2NUM( SDLK_RCTRL     ));
    if(mods & KMOD_LALT)     rb_ary_push(array,INT2NUM( SDLK_LALT      ));
    if(mods & KMOD_RALT)     rb_ary_push(array,INT2NUM( SDLK_RALT      ));
    if(mods & KMOD_LMETA)    rb_ary_push(array,INT2NUM( SDLK_LMETA     ));
    if(mods & KMOD_RMETA)    rb_ary_push(array,INT2NUM( SDLK_RMETA     ));
    if(mods & KMOD_NUM)      rb_ary_push(array,INT2NUM( SDLK_NUMLOCK   ));
    if(mods & KMOD_CAPS)     rb_ary_push(array,INT2NUM( SDLK_CAPSLOCK  ));
    if(mods & KMOD_MODE)     rb_ary_push(array,INT2NUM( SDLK_MODE      ));
  }
  return array;
}

static void
rb_set_to_a_callback(const void *value, void *context)
{
    rb_ary_push((VALUE)context, (VALUE)value);
}