abstract class AbstractArrayRead[E]
super SequenceRead[E]
- var _length: Int = 0
- redef fun length do return _length
+ redef var length = 0
redef fun is_empty do return _length == 0
self[pos] = item
end
+ redef fun insert_all(coll, pos)
+ do
+ var l = coll.length
+ if l == 0 then return
+ enlarge(length + l)
+ _length += l
+ copy_to(pos, length-pos-l, self, pos + l)
+ for c in coll do
+ self[pos] = c
+ pos += 1
+ end
+ end
+
redef fun add(item) do self[length] = item
redef fun clear do _length = 0
# assert a == b
class Array[E]
super AbstractArray[E]
- super ArrayCapable[E]
redef fun [](index)
do
var c = _capacity
if cap <= c then return
while c <= cap do c = c * 2 + 2
- var a = calloc_array(c)
+ var a = new NativeArray[E](c)
if _capacity > 0 then _items.copy_to(a, _length)
_items = a
_capacity = c
init with_capacity(cap: Int)
do
assert positive: cap >= 0
- _items = calloc_array(cap)
+ _items = new NativeArray[E](cap)
_capacity = cap
_length = 0
end
init filled_with(value: E, count: Int)
do
assert positive: count >= 0
- _items = calloc_array(count)
+ _items = new NativeArray[E](count)
_capacity = count
_length = count
var i = 0
end
# The internal storage.
- var _items: nullable NativeArray[E] = null
+ private var items: nullable NativeArray[E] = null
# Do not use this method
# FIXME: Remove it once modules can intrude non local modules
fun intern_items: NativeArray[E] do return _items.as(not null)
# The size of `_items`.
- var _capacity: Int = 0
+ private var capacity: Int = 0
redef fun ==(o)
do
end
return true
end
+
+ # Concatenation of arrays.
+ #
+ # Returns a new array built by concatenating `self` and `other` together.
+ #
+ # var a1 = [1,2,3]
+ # var a2 = [4,5,6]
+ # var a3 = a1 + a2
+ # assert a3 == [1,2,3,4,5,6]
+ #
+ # Because a new array is always created, future modification on `self` and `other`
+ # does not impact the previously computed result.
+ #
+ # a1.add(30)
+ # a2.add(60)
+ # assert a3 == [1,2,3,4,5,6] # unchanged
+ # assert a1 + a2 == [1,2,3,30,4,5,6,60]
+ fun +(other: Array[E]): Array[E]
+ do
+ var res = new Array[E].with_capacity(length + other.length)
+ res.append(self)
+ res.append(other)
+ return res
+ end
+
+ # Repetition of arrays.
+ #
+ # returns a new array built by concatenating `self` `repeat` times.
+ #
+ # var a = [1,2,3]
+ # assert (a * 0).is_empty
+ # assert a * 1 == [1,2,3]
+ # assert a * 2 == [1,2,3,1,2,3]
+ # assert (a * 10).length == 30
+ fun *(repeat: Int): Array[E]
+ do
+ assert repeat >= 0
+ var res = new Array[E].with_capacity(length * repeat)
+ while repeat > 0 do
+ res.add_all(self)
+ repeat -= 1
+ end
+ return res
+ end
end
# An `Iterator` on `AbstractArray`
redef fun next do _index += 1
- init(a: AbstractArrayRead[E])
- do
- _array = a
- _index = 0
- end
+ redef var index = 0
- var _index: Int = 0
- redef fun index do return _index
- var _array: AbstractArrayRead[E]
+ var array: AbstractArrayRead[E]
end
private class ArrayReverseIterator[E]
redef fun next do _index -= 1
- init(a: AbstractArrayRead[E])
+ init
do
- _array = a
- _index = a.length - 1
+ _index = _array.length - 1
end
end
super Set[E]
# The stored elements.
- var _array: Array[E]
+ private var array: Array[E] is noinit
redef fun has(e) do return _array.has(e)
redef fun item: E do return _iter.item
- init(iter: ArrayIterator[E]) do _iter = iter
-
- var _iter: ArrayIterator[E]
+ var iter: ArrayIterator[E]
end
end
# Internal storage.
- var _items = new Array[Couple[K,E]]
+ private var items = new Array[Couple[K,E]]
# fast remove the ith element of the array
private fun remove_at_index(i: Int)
end
# The last positive result given by a index(1) call
- var _last_index: Int = 0
+ private var last_index: Int = 0
# Where is the `key` in `_item`?
# return -1 if not found
# Native classes ##############################################################
-# Subclasses of this class can create native arrays
-interface ArrayCapable[E]
- # Get a new array of `size` elements.
- protected fun calloc_array(size: Int): NativeArray[E] is intern
-end
-
# Native Nit array
# Access are unchecked and it has a fixed size
# Not for public use: may become private.
universal NativeArray[E]
+ # Creates a new NativeArray of capacity `length`
+ new(length: Int) is intern
# The length of the array
fun length: Int is intern
# Use `self` to initialize a standard Nit Array.
fun to_a: Array[E] do return new Array[E].with_native(self, length)
+
+ # Get item at `index`.
fun [](index: Int): E is intern
+
+ # Set `item` at `index`.
fun []=(index: Int, item: E) is intern
+
+ # Copy `length` items to `dest`.
fun copy_to(dest: NativeArray[E], length: Int) is intern
#fun =(o: NativeArray[E]): Bool is intern
#fun !=(o: NativeArray[E]): Bool is intern
nitlanguage / nit.git / blobdiff