X-Git-Url: http://nitlanguage.org diff --git a/lib/c.nit b/lib/c.nit index d94ae8e..a9b04e1 100644 --- a/lib/c.nit +++ b/lib/c.nit @@ -14,10 +14,11 @@ # See the License for the specific language governing permissions and # limitations under the License. -# Utilities and performant structure for the FFI with C +# Structures and services for compatibility with the C language module c -import standard -intrude import standard::collection::array + +import core +intrude import core::collection::array # A thin wrapper around a `NativeCArray` adding length information abstract class CArray[E] @@ -70,10 +71,10 @@ extern class NativeCArray `{ void * `} type E: nullable Object # Get element at `index`. - fun [](index: E): E is abstract + fun [](index: Int): E is abstract # Set `val` at `index`. - fun []=(index: E, val: E) is abstract + fun []=(index: Int, val: E) is abstract # Return pointer to the address to the second element of this array # @@ -92,8 +93,8 @@ class CIntArray super size end - # Build from an `Array[Int]` - new from(array: Array[Int]) + # Create from an `SequenceRead[Int]` + new from(array: SequenceRead[Int]) do var carray = new CIntArray(array.length) for i in array.length.times do @@ -111,15 +112,15 @@ extern class NativeCIntArray `{ 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 [](index) `{ return self[index]; `} + redef fun []=(index, val) `{ self[index] = val; `} - redef fun +(offset) `{ return recv + offset; `} + redef fun +(offset) `{ return self + offset; `} end # Wrapper around an array of `unsigned char` in C (`unsigned char*`) with length and destroy state class CByteArray - super CArray[Int] + super CArray[Byte] redef type NATIVE: NativeCByteArray # Allocate a new array of `size` @@ -128,8 +129,8 @@ class CByteArray super size end - # Build from an `Array[Int]` - new from(array: Array[Int]) + # Create from a `SequenceRead[Byte]` + new from(array: SequenceRead[Byte]) do var carray = new CByteArray(array.length) for i in array.length.times do @@ -142,20 +143,57 @@ end # An array of `unsigned char` in C (`unsigned char*`) extern class NativeCByteArray `{ unsigned char* `} super NativeCArray - redef type E: Int + redef type E: Byte # 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; `} + redef fun [](index) `{ return self[index]; `} + redef fun []=(index, val) `{ self[index] = val; `} + + redef fun +(offset) `{ return self + offset; `} +end + +# Wrapper around an array of `NativeString` in C (`char**`) with length and destroy state. +class CNativeStringArray + super CArray[NativeString] + + redef type NATIVE: NativeCStringArray + + # Initialize a new NativeCStringArray of `size` elements. + init(size: Int) is old_style_init do + native_array = new NativeCStringArray(size) + super size + end + + # Create from an `SequenceRead[NativeString]` + new from(array: SequenceRead[NativeString]) + do + var carray = new CNativeStringArray(array.length) + for i in array.length.times do + carray[i] = array[i] + end + return carray + end +end + +# An array of `NativeString` in C (`char**`) +extern class NativeCStringArray `{ char** `} + super NativeCArray + + redef type E: NativeString + + # Initialize a new NativeCStringArray of `size` elements. + new(size: Int) `{ return calloc(size, sizeof(char*)); `} - redef fun +(offset) `{ return recv + offset; `} + redef fun [](index) `{ return self[index]; `} + redef fun []=(index, val) `{ self[index] = val; `} + redef fun +(offset) `{ return self + offset; `} end redef class NativeString super NativeCArray redef type E: Char - redef fun +(offset) `{ return recv + offset; `} + redef fun +(offset) `{ return self + offset; `} end