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# Define vector struct
struct Vector {
~void data,
int
size,
count,
_elsz
}
# Consts used in impl
int VECT_DEFAULT_SIZE = 4
int VECT_MAX_GROW = 128
# Methods on the struct
/; method Vector
# Initialize a new vector with elements
# 'elsz' bytes long
/; init (int elsz)
self.size = VECT_DEFAULT_SIZE
self._elsz = elsz
self.count = 0
self.data = _alloc(elsz * VECT_DEFAULT_SIZE)
;/
# Grow the size of the vector by 'size' elements
/; _grow (int size)
/; if (size > VECT_MAX_GROW)
size = VECT_MAX_GROW
;/
self.size = self.size + size
self.data = _realloc(self.data, self.size * self._elsz)
;/
# Shrink the size of the vector by 'size' elements
/; _shrink (int size)
/; if (self.size - size < 0)
self.size = 1
;; else
self.size = self.size - size
;/
/; if (self.count < self.size)
self.count = self.size
;/
self.data = _realloc(self.data, self.size * self._elsz)
;/
# Push an element onto the end of the vector
/; push (~void data)
/; if (count == size - 1)
self._grow(self.size)
;/
/; loop (int i = 0; i < self._elsz) [i++]
(self.data + i)` = (data + i)`
;/
self.count++
;/
# Pop an element off of the end of the vector
/; pop
self.count--
/; if (self.count < self.size / 2)
self._shrink(self.size / 3)
;/
;/
# Get a pointer to the start of an element in the vector
/; get (int index) [~void]
return self.data
;/
# Free all memory associated with the vector
/; end
_delete(self.data)
self.size = 0
self._elsz = 0
self.count = 0
;/
;/
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