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c_vec: Remove the mutable cast be forcing the pointer to be mutable throughout (discussion in #1217).

This commit is contained in:
Joshua Wise 2011-11-25 02:42:56 -05:00 committed by Niko Matsakis
parent c2eb084b4c
commit 45dc5356df
1 changed files with 7 additions and 6 deletions
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13
src/lib/c_vec.rs
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@ -43,7 +43,7 @@ export ptr;
*/
tag t<T> {
t({ base: *T, size: uint, rsrc: @dtor_res});
t({ base: *mutable T, size: uint, rsrc: @dtor_res});
}
resource dtor_res(dtor: option::t<fn@()>) {
@ -57,14 +57,15 @@ resource dtor_res(dtor: option::t<fn@()>) {
Section: Introduction forms
*/
unsafe fn create<T>(base: *T, size: uint) -> t<T> {
unsafe fn create<T>(base: *mutable T, size: uint) -> t<T> {
ret t({base: base,
size: size,
rsrc: @dtor_res(option::none)
});
}
unsafe fn create_with_dtor<T>(base: *T, size: uint, dtor: fn@()) -> t<T> {
unsafe fn create_with_dtor<T>(base: *mutable T, size: uint, dtor: fn@())
-> t<T> {
ret t({base: base,
size: size,
rsrc: @dtor_res(option::some(dtor))
@ -77,12 +78,12 @@ unsafe fn create_with_dtor<T>(base: *T, size: uint, dtor: fn@()) -> t<T> {
fn get<copy T>(t: t<T>, ofs: uint) -> T {
assert ofs < (*t).size;
ret unsafe { *ptr::offset((*t).base, ofs) };
ret unsafe { *ptr::mut_offset((*t).base, ofs) };
}
fn set<copy T>(t: t<T>, ofs: uint, v: T) {
assert ofs < (*t).size;
unsafe { *(ptr::offset((*t).base, ofs) as *mutable T) = v };
unsafe { *ptr::mut_offset((*t).base, ofs) = v };
}
/*
@ -93,6 +94,6 @@ fn size<T>(t: t<T>) -> uint {
ret (*t).size;
}
unsafe fn ptr<T>(t: t<T>) -> *T {
unsafe fn ptr<T>(t: t<T>) -> *mutable T {
ret (*t).base;
}