-USING: alien help.syntax help.markup libc kernel.private
-byte-arrays strings hashtables alien.syntax alien.strings
-sequences io.encodings.string debugger destructors vocabs.loader
-classes.struct math kernel ;
-QUALIFIED: math
-QUALIFIED: sequences
+USING: alien alien.syntax byte-arrays classes.struct help.markup
+help.syntax kernel math sequences ;
IN: alien.c-types
HELP: heap-size
$nl
"In " { $link POSTPONE: TYPEDEF: } ", " { $link POSTPONE: FUNCTION: } ", " { $link POSTPONE: CALLBACK: } ", and " { $link POSTPONE: STRUCT: } " definitions, pointer types can be created by suffixing " { $snippet "*" } " to a C type name. Outside of FFI definitions, a pointer C type can be created using the " { $link POSTPONE: pointer: } " syntax word:"
{ $unchecked-example "FUNCTION: int* foo ( char* bar ) ;" }
-{ $unchecked-example """: foo ( bar -- int* )
- pointer: int f \"foo\" { pointer: char } alien-invoke ;""" } } ;
+{ $unchecked-example ": foo ( bar -- int* )
+ pointer: int f \"foo\" { pointer: char } f alien-invoke ;" } } ;
ARTICLE: "byte-arrays-gc" "Byte arrays and the garbage collector"
"The Factor garbage collector can move byte arrays around, and it is only safe to pass byte arrays to C functions if the garbage collector will not run while C code still has a reference to the data."
ARTICLE: "c-types.primitives" "Primitive C types"
"The following numerical types are defined in the " { $vocab-link "alien.c-types" } " vocabulary; a " { $snippet "u" } " prefix denotes an unsigned type:"
{ $table
- { "C type" "Notes" }
+ { { $strong "C type" } { $strong "Notes" } }
{ { $link char } "always 1 byte" }
{ { $link uchar } { } }
{ { $link short } "always 2 bytes" }