abstract class CArray[E]
super AbstractArrayRead[E]
+ # The corresponding C type
type NATIVE: NativeCArray
+
+ # Pointer to the real C array
var native_array: NATIVE is noinit
- private init(length: Int) do self._length = length
+ private init(length: Int) is old_style_init do self._length = length
redef fun [](index)
do
return native_array[index]
end
+ # Set `val` at `index`.
fun []=(index: Int, val: E)
do
assert not destroyed
native_array[index] = val
end
+ # Was this instance destroyed?
+ #
+ # See `CArray::destroy`.
var destroyed = false
+
+ # Free used memory used by `native_array`.
+ #
+ # Also set `destroyed` to true.
fun destroy
do
if destroyed then return
# A native C array, as in a pointer to the first element of the array
extern class NativeCArray `{ void * `}
+
+ # Type of contained elements.
type E: nullable Object
- fun [](index: E): E is abstract
- fun []=(index: E, val: E) is abstract
+ # Get element at `index`.
+ fun [](index: Int): E is abstract
+
+ # Set `val` at `index`.
+ fun []=(index: Int, val: E) is abstract
# Return pointer to the address to the second element of this array
#
super CArray[Int]
redef type NATIVE: NativeCIntArray
- init(size: Int)
- do
+ # Initialize a new CIntArray of `size` elements.
+ init(size: Int) is old_style_init do
native_array = new NativeCIntArray(size)
super size
end
+
+ # Build from an `Array[Int]`
+ new from(array: Array[Int])
+ do
+ var carray = new CIntArray(array.length)
+ for i in array.length.times do
+ carray[i] = array[i]
+ end
+ return carray
+ end
end
# An array of `int` in C (`int*`)
super NativeCArray
redef type E: Int
+ # Initialize a new NativeCIntArray of `size` elements.
new(size: Int) `{ return calloc(size, sizeof(int)); `}
+
+ redef fun [](index) `{ return recv[index]; `}
+ redef fun []=(index, val) `{ recv[index] = val; `}
+
+ redef fun +(offset) `{ return recv + offset; `}
+end
+
+# Wrapper around an array of `unsigned char` in C (`unsigned char*`) with length and destroy state
+class CByteArray
+ super CArray[Int]
+ redef type NATIVE: NativeCByteArray
+
+ # Allocate a new array of `size`
+ init(size: Int) is old_style_init do
+ native_array = new NativeCByteArray(size)
+ super size
+ end
+
+ # Build from an `Array[Int]`
+ new from(array: Array[Int])
+ do
+ var carray = new CByteArray(array.length)
+ for i in array.length.times do
+ carray[i] = array[i]
+ end
+ return carray
+ end
+end
+
+# An array of `unsigned char` in C (`unsigned char*`)
+extern class NativeCByteArray `{ unsigned char* `}
+ super NativeCArray
+ redef type E: Int
+
+ # Allocate a new array of `size`
+ new(size: Int) `{ return calloc(size, sizeof(unsigned char)); `}
+
redef fun [](index) `{ return recv[index]; `}
redef fun []=(index, val) `{ recv[index] = val; `}