Name
SPVM::StringBuffer - String Buffer
Usage
use StringBuffer;
# new
my $buffer = StringBuffer->new;
# push string
$buffer->push("abc");
$buffer->push("def");
# Convert to string - abcdef
my $string = $buffer->to_string;Description
String buffer.
Enumerations
enum {
DEFAULT_CAPACITY = 4,
}DEFAULT_CAPACITY
The default capacity. The value is 4.
Fields
capacity
has capacity : ro int;The capacity. This is the length of the internally reserved characters to extend the length of the string buffer.
length
has length : ro int;The length of the string buffer.
value
has value : ro mutable string;The value. This is the internally used string, but it can be manipulated directly.
my $value = $buffer->value;
$valeu->[0] = 'a';Class Methods
new
static method new : StringBuffer ($string = undef : string, $capacity = -1 : int)Create a new StringBuffer object using "new_len".
The passed length to "new_len" is the length of the string. If the string is undef, the length is 0.
The string is copied to the value of the the created string buffer.
new_len
static method new_len : StringBuffer ($length : int, $capacity = -1 : int)Create a new StringBuffer object with the length and the capacity.
If the capacity is less than 0, the capacity is set to the value of "DEFAULT_CAPACITY".
If the length is greater than the capacity, the capacity is set to the length.
The length must be greater than or equal to 0. Otherwise an excpetion will be thrown.
Instance Methods
push
method push : void ($string : string)Add a string after the end of the string in the string buffer.
push_char
method push_char : void ($char : byte)Add a character after the end of the string in the string buffer.
replace
method replace : void ($offset : int, $length : int, $replace : string)Replace the characters of the range specified by the offset and the lenght with the replacement string.
The offset must be greater than or equal to 0. Otherwise an exception will be thrown.
The offset + the removing lenght must be less than or equal to the length of the string buffer. Otherwise an exception will be thrown.
reserve
method reserve : void ($new_capacity : int)Reserve the characters with the new capacity.
If the new capacity is greater than the capacity of the string buffer, the capacity of the string buffer is extended to the new capacity.
Note that "value" is replaced with the new value and the value of the original string buffer are copied to the new value in the above case.
The new capacity must be greater than or equal to 0. Otherwise an excpetion will be thrown.
to_string
method to_string : string ()Convert the string buffer to a string.