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auto merge of #7254 : Blei/rust/intrinsic-overhaul, r=cmr 

This sets the `get_tydesc()` return type correctly and removes the intrinsic module. See #3730, #3475.

Update: this now also removes the unused shape fields in tydescs.
This commit is contained in:
bors 2013-06-25 04:38:06 -07:00
parent b11346bb5d f8ae3cdcaa
commit 7aee5da08d
35 changed files with 558 additions and 647 deletions
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53
src/libextra/arena.rs
View File

@ -41,30 +41,21 @@ use list::{MutList, MutCons, MutNil};
use core::at_vec;
use core::cast::{transmute, transmute_mut, transmute_mut_region};
use core::cast;
use core::libc::size_t;
use core::ptr;
use core::sys::TypeDesc;
use core::sys;
use core::uint;
use core::vec;
use core::unstable::intrinsics;
use core::unstable::intrinsics::{TyDesc};
pub mod rustrt {
use core::libc::size_t;
use core::sys::TypeDesc;
#[cfg(not(stage0))]
use core::unstable::intrinsics::{get_tydesc};
pub extern {
#[rust_stack]
unsafe fn rust_call_tydesc_glue(root: *u8,
tydesc: *TypeDesc,
field: size_t);
}
#[cfg(stage0)]
unsafe fn get_tydesc<T>() -> *TyDesc {
intrinsics::get_tydesc::<T>() as *TyDesc
}
// This probably belongs somewhere else. Needs to be kept in sync with
// changes to glue...
static tydesc_drop_glue_index: size_t = 3 as size_t;
// The way arena uses arrays is really deeply awful. The arrays are
// allocated, and have capacities reserved, but the fill for the array
// will always stay at 0.
@ -125,6 +116,19 @@ fn round_up_to(base: uint, align: uint) -> uint {
(base + (align - 1)) & !(align - 1)
}
#[inline]
#[cfg(not(stage0))]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
// This function should be inlined when stage0 is gone
((*tydesc).drop_glue)(data);
}
#[inline]
#[cfg(stage0)]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
((*tydesc).drop_glue)(0 as **TyDesc, data);
}
// Walk down a chunk, running the destructors for any objects stored
// in it.
unsafe fn destroy_chunk(chunk: &Chunk) {
@ -137,19 +141,18 @@ unsafe fn destroy_chunk(chunk: &Chunk) {
let (tydesc, is_done) = un_bitpack_tydesc_ptr(*tydesc_data);
let (size, align) = ((*tydesc).size, (*tydesc).align);
let after_tydesc = idx + sys::size_of::<*TypeDesc>();
let after_tydesc = idx + sys::size_of::<*TyDesc>();
let start = round_up_to(after_tydesc, align);
//debug!("freeing object: idx = %u, size = %u, align = %u, done = %b",
// start, size, align, is_done);
if is_done {
rustrt::rust_call_tydesc_glue(
ptr::offset(buf, start), tydesc, tydesc_drop_glue_index);
call_drop_glue(tydesc, ptr::offset(buf, start) as *i8);
}
// Find where the next tydesc lives
idx = round_up_to(start + size, sys::pref_align_of::<*TypeDesc>());
idx = round_up_to(start + size, sys::pref_align_of::<*TyDesc>());
}
}
@ -158,12 +161,12 @@ unsafe fn destroy_chunk(chunk: &Chunk) {
// is necessary in order to properly do cleanup if a failure occurs
// during an initializer.
#[inline]
unsafe fn bitpack_tydesc_ptr(p: *TypeDesc, is_done: bool) -> uint {
unsafe fn bitpack_tydesc_ptr(p: *TyDesc, is_done: bool) -> uint {
let p_bits: uint = transmute(p);
p_bits | (is_done as uint)
}
#[inline]
unsafe fn un_bitpack_tydesc_ptr(p: uint) -> (*TypeDesc, bool) {
unsafe fn un_bitpack_tydesc_ptr(p: uint) -> (*TyDesc, bool) {
(transmute(p & !1), p & 1 == 1)
}
@ -203,7 +206,7 @@ impl Arena {
#[inline]
fn alloc_pod<'a, T>(&'a mut self, op: &fn() -> T) -> &'a T {
unsafe {
let tydesc = sys::get_type_desc::<T>();
let tydesc = get_tydesc::<T>();
let ptr = self.alloc_pod_inner((*tydesc).size, (*tydesc).align);
let ptr: *mut T = transmute(ptr);
intrinsics::move_val_init(&mut (*ptr), op());
@ -231,13 +234,13 @@ impl Arena {
let head = transmute_mut_region(&mut self.head);
let tydesc_start = head.fill;
let after_tydesc = head.fill + sys::size_of::<*TypeDesc>();
let after_tydesc = head.fill + sys::size_of::<*TyDesc>();
let start = round_up_to(after_tydesc, align);
let end = start + n_bytes;
if end > at_vec::capacity(head.data) {
return self.alloc_nonpod_grow(n_bytes, align);
}
head.fill = round_up_to(end, sys::pref_align_of::<*TypeDesc>());
head.fill = round_up_to(end, sys::pref_align_of::<*TyDesc>());
//debug!("idx = %u, size = %u, align = %u, fill = %u",
// start, n_bytes, align, head.fill);
@ -250,7 +253,7 @@ impl Arena {
#[inline]
fn alloc_nonpod<'a, T>(&'a mut self, op: &fn() -> T) -> &'a T {
unsafe {
let tydesc = sys::get_type_desc::<T>();
let tydesc = get_tydesc::<T>();
let (ty_ptr, ptr) =
self.alloc_nonpod_inner((*tydesc).size, (*tydesc).align);
let ty_ptr: *mut uint = transmute(ty_ptr);

34
src/libextra/dbg.rs
View File

@ -13,56 +13,62 @@
#[allow(missing_doc)];
use core::cast::transmute;
use core::sys;
#[cfg(stage0)]
use intrinsic::{get_tydesc};
#[cfg(not(stage0))]
use core::unstable::intrinsics::{get_tydesc};
pub mod rustrt {
use core::sys;
#[cfg(stage0)]
use intrinsic::{TyDesc};
#[cfg(not(stage0))]
use core::unstable::intrinsics::{TyDesc};
#[abi = "cdecl"]
pub extern {
pub unsafe fn debug_tydesc(td: *sys::TypeDesc);
pub unsafe fn debug_opaque(td: *sys::TypeDesc, x: *());
pub unsafe fn debug_box(td: *sys::TypeDesc, x: *());
pub unsafe fn debug_tag(td: *sys::TypeDesc, x: *());
pub unsafe fn debug_fn(td: *sys::TypeDesc, x: *());
pub unsafe fn debug_ptrcast(td: *sys::TypeDesc, x: *()) -> *();
pub unsafe fn debug_tydesc(td: *TyDesc);
pub unsafe fn debug_opaque(td: *TyDesc, x: *());
pub unsafe fn debug_box(td: *TyDesc, x: *());
pub unsafe fn debug_tag(td: *TyDesc, x: *());
pub unsafe fn debug_fn(td: *TyDesc, x: *());
pub unsafe fn debug_ptrcast(td: *TyDesc, x: *()) -> *();
pub unsafe fn rust_dbg_breakpoint();
}
}
pub fn debug_tydesc<T>() {
unsafe {
rustrt::debug_tydesc(sys::get_type_desc::<T>());
rustrt::debug_tydesc(get_tydesc::<T>());
}
}
pub fn debug_opaque<T>(x: T) {
unsafe {
rustrt::debug_opaque(sys::get_type_desc::<T>(), transmute(&x));
rustrt::debug_opaque(get_tydesc::<T>(), transmute(&x));
}
}
pub fn debug_box<T>(x: @T) {
unsafe {
rustrt::debug_box(sys::get_type_desc::<T>(), transmute(&x));
rustrt::debug_box(get_tydesc::<T>(), transmute(&x));
}
}
pub fn debug_tag<T>(x: T) {
unsafe {
rustrt::debug_tag(sys::get_type_desc::<T>(), transmute(&x));
rustrt::debug_tag(get_tydesc::<T>(), transmute(&x));
}
}
pub fn debug_fn<T>(x: T) {
unsafe {
rustrt::debug_fn(sys::get_type_desc::<T>(), transmute(&x));
rustrt::debug_fn(get_tydesc::<T>(), transmute(&x));
}
}
pub unsafe fn ptr_cast<T, U>(x: @T) -> @U {
transmute(
rustrt::debug_ptrcast(sys::get_type_desc::<T>(), transmute(x)))
rustrt::debug_ptrcast(get_tydesc::<T>(), transmute(x)))
}
/// Triggers a debugger breakpoint

17
src/librustc/back/abi.rs
View File

@ -8,9 +8,6 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
pub static rc_base_field_refcnt: uint = 0u;
pub static task_field_refcnt: uint = 0u;
@ -49,9 +46,7 @@ pub static tydesc_field_take_glue: uint = 2u;
pub static tydesc_field_drop_glue: uint = 3u;
pub static tydesc_field_free_glue: uint = 4u;
pub static tydesc_field_visit_glue: uint = 5u;
pub static tydesc_field_shape: uint = 6u;
pub static tydesc_field_shape_tables: uint = 7u;
pub static n_tydesc_fields: uint = 8u;
pub static n_tydesc_fields: uint = 6u;
// The two halves of a closure: code and environment.
pub static fn_field_code: uint = 0u;
@ -71,14 +66,4 @@ pub static vec_elt_elems: uint = 2u;
pub static slice_elt_base: uint = 0u;
pub static slice_elt_len: uint = 1u;
pub static worst_case_glue_call_args: uint = 7u;
pub static abi_version: uint = 1u;
pub fn memcpy_glue_name() -> ~str { return ~"rust_memcpy_glue"; }
pub fn bzero_glue_name() -> ~str { return ~"rust_bzero_glue"; }
pub fn yield_glue_name() -> ~str { return ~"rust_yield_glue"; }
pub fn no_op_type_glue_name() -> ~str { return ~"rust_no_op_type_glue"; }

3
src/librustc/driver/driver.rs
View File

@ -206,9 +206,6 @@ pub fn compile_rest(sess: Session,
let mut crate = crate_opt.unwrap();
let (llcx, llmod, link_meta) = {
crate = time(time_passes, ~"intrinsic injection", ||
front::intrinsic_inject::inject_intrinsic(sess, crate));
crate = time(time_passes, ~"extra injection", ||
front::std_inject::maybe_inject_libstd_ref(sess, crate));

140
src/librustc/front/intrinsic.rs
View File

@ -1,140 +0,0 @@
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// NB: this file is include_str!'ed into the compiler, re-parsed
// and injected into each crate the compiler builds. Keep it small.
pub mod intrinsic {
#[allow(missing_doc)];
pub use intrinsic::rusti::visit_tydesc;
// FIXME (#3727): remove this when the interface has settled and the
// version in sys is no longer present.
pub fn get_tydesc<T>() -> *TyDesc {
unsafe {
rusti::get_tydesc::<T>() as *TyDesc
}
}
pub struct TyDesc {
size: uint,
align: uint
// Remaining fields not listed
}
pub enum Opaque { }
pub trait TyVisitor {
fn visit_bot(&self) -> bool;
fn visit_nil(&self) -> bool;
fn visit_bool(&self) -> bool;
fn visit_int(&self) -> bool;
fn visit_i8(&self) -> bool;
fn visit_i16(&self) -> bool;
fn visit_i32(&self) -> bool;
fn visit_i64(&self) -> bool;
fn visit_uint(&self) -> bool;
fn visit_u8(&self) -> bool;
fn visit_u16(&self) -> bool;
fn visit_u32(&self) -> bool;
fn visit_u64(&self) -> bool;
fn visit_float(&self) -> bool;
fn visit_f32(&self) -> bool;
fn visit_f64(&self) -> bool;
fn visit_char(&self) -> bool;
fn visit_str(&self) -> bool;
fn visit_estr_box(&self) -> bool;
fn visit_estr_uniq(&self) -> bool;
fn visit_estr_slice(&self) -> bool;
fn visit_estr_fixed(&self, n: uint, sz: uint, align: uint) -> bool;
fn visit_box(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_uniq(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_ptr(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_rptr(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_vec(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_unboxed_vec(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_box(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_uniq(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_slice(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_fixed(&self, n: uint, sz: uint, align: uint,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_enter_rec(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_rec_field(&self, i: uint, name: &str,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_leave_rec(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_class(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_class_field(&self, i: uint, name: &str,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_leave_class(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_tup(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_tup_field(&self, i: uint, inner: *TyDesc) -> bool;
fn visit_leave_tup(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_enum(&self, n_variants: uint,
get_disr: extern unsafe fn(ptr: *Opaque) -> int,
sz: uint, align: uint) -> bool;
fn visit_enter_enum_variant(&self, variant: uint,
disr_val: int,
n_fields: uint,
name: &str) -> bool;
fn visit_enum_variant_field(&self, i: uint, offset: uint, inner: *TyDesc) -> bool;
fn visit_leave_enum_variant(&self, variant: uint,
disr_val: int,
n_fields: uint,
name: &str) -> bool;
fn visit_leave_enum(&self, n_variants: uint,
get_disr: extern unsafe fn(ptr: *Opaque) -> int,
sz: uint, align: uint) -> bool;
fn visit_enter_fn(&self, purity: uint, proto: uint,
n_inputs: uint, retstyle: uint) -> bool;
fn visit_fn_input(&self, i: uint, mode: uint, inner: *TyDesc) -> bool;
fn visit_fn_output(&self, retstyle: uint, inner: *TyDesc) -> bool;
fn visit_leave_fn(&self, purity: uint, proto: uint,
n_inputs: uint, retstyle: uint) -> bool;
fn visit_trait(&self) -> bool;
fn visit_var(&self) -> bool;
fn visit_var_integral(&self) -> bool;
fn visit_param(&self, i: uint) -> bool;
fn visit_self(&self) -> bool;
fn visit_type(&self) -> bool;
fn visit_opaque_box(&self) -> bool;
fn visit_constr(&self, inner: *TyDesc) -> bool;
fn visit_closure_ptr(&self, ck: uint) -> bool;
}
pub mod rusti {
use super::{TyDesc, TyVisitor};
#[abi = "rust-intrinsic"]
pub extern "rust-intrinsic" {
pub fn get_tydesc<T>() -> *();
pub fn visit_tydesc(td: *TyDesc, tv: @TyVisitor);
}
}
}

47
src/librustc/front/intrinsic_inject.rs
View File

@ -1,47 +0,0 @@
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use core::prelude::*;
use core::vec;
use driver::session::Session;
use syntax::parse;
use syntax::ast;
use syntax::codemap::spanned;
pub fn inject_intrinsic(sess: Session, crate: @ast::crate) -> @ast::crate {
let intrinsic_module = include_str!("intrinsic.rs").to_managed();
let item = parse::parse_item_from_source_str(@"<intrinsic>",
intrinsic_module,
/*bad*/copy sess.opts.cfg,
~[],
sess.parse_sess);
let item =
match item {
Some(i) => i,
None => {
sess.fatal("no item found in intrinsic module");
}
};
let items = vec::append(~[item], crate.node.module.items);
@spanned {
node: ast::crate_ {
module: ast::_mod {
items: items,
.. /*bad*/copy crate.node.module
},
.. /*bad*/copy crate.node
},
.. /*bad*/copy *crate
}
}

24
src/librustc/middle/lang_items.rs
View File

@ -76,16 +76,20 @@ pub enum LangItem {
UnrecordBorrowFnLangItem, // 36
StartFnLangItem, // 37
TyDescStructLangItem, // 38
TyVisitorTraitLangItem, // 39
OpaqueStructLangItem, // 40
}
pub struct LanguageItems {
items: [Option<def_id>, ..38]
items: [Option<def_id>, ..41]
}
impl LanguageItems {
pub fn new() -> LanguageItems {
LanguageItems {
items: [ None, ..38 ]
items: [ None, ..41 ]
}
}
@ -138,6 +142,10 @@ impl LanguageItems {
37 => "start",
38 => "ty_desc",
39 => "ty_visitor",
40 => "opaque",
_ => "???"
}
}
@ -262,6 +270,15 @@ impl LanguageItems {
pub fn start_fn(&const self) -> def_id {
self.items[StartFnLangItem as uint].get()
}
pub fn ty_desc(&const self) -> def_id {
self.items[TyDescStructLangItem as uint].get()
}
pub fn ty_visitor(&const self) -> def_id {
self.items[TyVisitorTraitLangItem as uint].get()
}
pub fn opaque(&const self) -> def_id {
self.items[OpaqueStructLangItem as uint].get()
}
}
fn LanguageItemCollector(crate: @crate,
@ -313,6 +330,9 @@ fn LanguageItemCollector(crate: @crate,
item_refs.insert(@"record_borrow", RecordBorrowFnLangItem as uint);
item_refs.insert(@"unrecord_borrow", UnrecordBorrowFnLangItem as uint);
item_refs.insert(@"start", StartFnLangItem as uint);
item_refs.insert(@"ty_desc", TyDescStructLangItem as uint);
item_refs.insert(@"ty_visitor", TyVisitorTraitLangItem as uint);
item_refs.insert(@"opaque", OpaqueStructLangItem as uint);
LanguageItemCollector {
crate: crate,

9
src/librustc/middle/trans/foreign.rs
View File

@ -681,9 +681,12 @@ pub fn trans_intrinsic(ccx: @mut CrateContext,
let static_ti = get_tydesc(ccx, tp_ty);
glue::lazily_emit_all_tydesc_glue(ccx, static_ti);
// FIXME (#3727): change this to ccx.tydesc_ty.ptr_to() when the
// core::sys copy of the get_tydesc interface dies off.
let td = PointerCast(bcx, static_ti.tydesc, Type::nil().ptr_to());
// FIXME (#3730): ideally this shouldn't need a cast,
// but there's a circularity between translating rust types to llvm
// types and having a tydesc type available. So I can't directly access
// the llvm type of intrinsic::TyDesc struct.
let userland_tydesc_ty = type_of::type_of(ccx, output_type);
let td = PointerCast(bcx, static_ti.tydesc, userland_tydesc_ty);
Store(bcx, td, fcx.llretptr.get());
}
"init" => {

33
src/librustc/middle/trans/glue.rs
View File

@ -232,7 +232,7 @@ pub fn lazily_emit_tydesc_glue(ccx: @mut CrateContext,
field: uint,
ti: @mut tydesc_info) {
let _icx = push_ctxt("lazily_emit_tydesc_glue");
let llfnty = type_of_glue_fn(ccx);
let llfnty = Type::glue_fn();
if lazily_emit_simplified_tydesc_glue(ccx, field, ti) {
return;
@ -338,9 +338,7 @@ pub fn call_tydesc_glue_full(bcx: block,
}
};
Call(bcx, llfn, [C_null(Type::nil().ptr_to()),
C_null(bcx.ccx().tydesc_type.ptr_to().ptr_to()),
llrawptr]);
Call(bcx, llfn, [C_null(Type::nil().ptr_to()), llrawptr]);
}
// See [Note-arg-mode]
@ -680,7 +678,7 @@ pub fn make_generic_glue_inner(ccx: @mut CrateContext,
let bcx = top_scope_block(fcx, None);
let lltop = bcx.llbb;
let rawptr0_arg = fcx.arg_pos(1u);
let rawptr0_arg = fcx.arg_pos(0u);
let llrawptr0 = unsafe { llvm::LLVMGetParam(llfn, rawptr0_arg as c_uint) };
let llty = type_of(ccx, t);
let llrawptr0 = PointerCast(bcx, llrawptr0, llty.ptr_to());
@ -715,7 +713,7 @@ pub fn emit_tydescs(ccx: &mut CrateContext) {
let _icx = push_ctxt("emit_tydescs");
// As of this point, allow no more tydescs to be created.
ccx.finished_tydescs = true;
let glue_fn_ty = Type::generic_glue_fn(ccx);
let glue_fn_ty = Type::generic_glue_fn(ccx).ptr_to();
let tyds = &mut ccx.tydescs;
for tyds.each_value |&val| {
let ti = val;
@ -765,19 +763,13 @@ pub fn emit_tydescs(ccx: &mut CrateContext) {
}
};
let shape = C_null(Type::i8p());
let shape_tables = C_null(Type::i8p());
let tydesc = C_named_struct(ccx.tydesc_type,
[ti.size, // size
ti.align, // align
take_glue, // take_glue
drop_glue, // drop_glue
free_glue, // free_glue
visit_glue, // visit_glue
shape, // shape
shape_tables]); // shape_tables
[ti.size, // size
ti.align, // align
take_glue, // take_glue
drop_glue, // drop_glue
free_glue, // free_glue
visit_glue]); // visit_glue
unsafe {
let gvar = ti.tydesc;
@ -788,8 +780,3 @@ pub fn emit_tydescs(ccx: &mut CrateContext) {
}
};
}
fn type_of_glue_fn(ccx: &CrateContext) -> Type {
let tydescpp = ccx.tydesc_type.ptr_to().ptr_to();
Type::func([ Type::nil().ptr_to(), tydescpp, Type::i8p() ], &Type::void())
}

8
src/librustc/middle/trans/reflect.rs
View File

@ -274,9 +274,7 @@ impl Reflector {
let repr = adt::represent_type(bcx.ccx(), t);
let variants = ty::substd_enum_variants(ccx.tcx, did, substs);
let llptrty = type_of(ccx, t).ptr_to();
let (_, opaquety) =
ccx.tcx.intrinsic_defs.find_copy(&ccx.sess.ident_of("Opaque"))
.expect("Failed to resolve intrinsic::Opaque");
let opaquety = ty::get_opaque_ty(ccx.tcx);
let opaqueptrty = ty::mk_ptr(ccx.tcx, ty::mt { ty: opaquety, mutbl: ast::m_imm });
let make_get_disr = || {
@ -373,10 +371,8 @@ pub fn emit_calls_to_trait_visit_ty(bcx: block,
visitor_val: ValueRef,
visitor_trait_id: def_id)
-> block {
use syntax::parse::token::special_idents::tydesc;
let final = sub_block(bcx, "final");
assert!(bcx.ccx().tcx.intrinsic_defs.contains_key(&tydesc));
let (_, tydesc_ty) = bcx.ccx().tcx.intrinsic_defs.get_copy(&tydesc);
let tydesc_ty = ty::get_tydesc_ty(bcx.ccx().tcx);
let tydesc_ty = type_of(bcx.ccx(), tydesc_ty);
let mut r = Reflector {
visitor_val: visitor_val,

20
src/librustc/middle/trans/type_.rs
View File

@ -20,7 +20,6 @@ use middle::trans::base;
use syntax::ast;
use syntax::abi::{Architecture, X86, X86_64, Arm, Mips};
use back::abi;
use core::vec;
use core::cast;
@ -189,25 +188,26 @@ impl Type {
None => ()
}
let ty = cx.tydesc_type.get_field(abi::tydesc_field_drop_glue);
let ty = Type::glue_fn();
cx.tn.associate_type("glue_fn", &ty);
return ty;
}
pub fn glue_fn() -> Type {
Type::func([ Type::nil().ptr_to(), Type::i8p() ],
&Type::void())
}
pub fn tydesc(arch: Architecture) -> Type {
let mut tydesc = Type::named_struct("tydesc");
let tydescpp = tydesc.ptr_to().ptr_to();
let pvoid = Type::i8p();
let glue_fn_ty = Type::func([ Type::nil().ptr_to(), tydescpp, pvoid ],
&Type::void()).ptr_to();
let glue_fn_ty = Type::glue_fn().ptr_to();
let int_ty = Type::int(arch);
let elems = [
int_ty, int_ty,
glue_fn_ty, glue_fn_ty, glue_fn_ty, glue_fn_ty,
pvoid, pvoid
glue_fn_ty, glue_fn_ty, glue_fn_ty, glue_fn_ty
];
tydesc.set_struct_body(elems, false);
@ -265,10 +265,6 @@ impl Type {
cx.int_type
}
pub fn captured_tydescs(ctx: &CrateContext, num: uint) -> Type {
Type::struct_(vec::from_elem(num, ctx.tydesc_type.ptr_to()), false)
}
pub fn opaque_trait(ctx: &CrateContext, store: ty::TraitStore) -> Type {
let tydesc_ptr = ctx.tydesc_type.ptr_to();
match store {

27
src/librustc/middle/ty.rs
View File

@ -44,7 +44,6 @@ use syntax::attr;
use syntax::codemap::span;
use syntax::codemap;
use syntax::parse::token;
use syntax::parse::token::special_idents;
use syntax::{ast, ast_map};
use syntax::opt_vec::OptVec;
use syntax::opt_vec;
@ -276,8 +275,7 @@ struct ctxt_ {
trait_defs: @mut HashMap<def_id, @TraitDef>,
items: ast_map::map,
intrinsic_defs: @mut HashMap<ast::ident, (ast::def_id, t)>,
intrinsic_traits: @mut HashMap<ast::ident, @TraitRef>,
intrinsic_defs: @mut HashMap<ast::def_id, t>,
freevars: freevars::freevar_map,
tcache: type_cache,
rcache: creader_cache,
@ -954,7 +952,6 @@ pub fn mk_ctxt(s: session::Session,
node_type_substs: @mut HashMap::new(),
trait_refs: @mut HashMap::new(),
trait_defs: @mut HashMap::new(),
intrinsic_traits: @mut HashMap::new(),
items: amap,
intrinsic_defs: @mut HashMap::new(),
freevars: freevars,
@ -4469,10 +4466,26 @@ pub fn get_impl_id(tcx: ctxt, trait_id: def_id, self_ty: t) -> def_id {
}
}
pub fn get_tydesc_ty(tcx: ctxt) -> t {
let tydesc_lang_item = tcx.lang_items.ty_desc();
tcx.intrinsic_defs.find_copy(&tydesc_lang_item)
.expect("Failed to resolve TyDesc")
}
pub fn get_opaque_ty(tcx: ctxt) -> t {
let opaque_lang_item = tcx.lang_items.opaque();
tcx.intrinsic_defs.find_copy(&opaque_lang_item)
.expect("Failed to resolve Opaque")
}
pub fn visitor_object_ty(tcx: ctxt) -> (@TraitRef, t) {
let ty_visitor_name = special_idents::ty_visitor;
assert!(tcx.intrinsic_traits.contains_key(&ty_visitor_name));
let trait_ref = tcx.intrinsic_traits.get_copy(&ty_visitor_name);
let substs = substs {
self_r: None,
self_ty: None,
tps: ~[]
};
let trait_lang_item = tcx.lang_items.ty_visitor();
let trait_ref = @TraitRef { def_id: trait_lang_item, substs: substs };
(trait_ref,
mk_trait(tcx, trait_ref.def_id, copy trait_ref.substs,
BoxTraitStore, ast::m_imm, EmptyBuiltinBounds()))

12
src/librustc/middle/typeck/check/mod.rs
View File

@ -3506,13 +3506,15 @@ pub fn check_intrinsic_type(ccx: @mut CrateCtxt, it: @ast::foreign_item) {
}
"get_tydesc" => {
// FIXME (#3730): return *intrinsic::tydesc, not *()
(1u, ~[], ty::mk_nil_ptr(ccx.tcx))
let tydesc_ty = ty::get_tydesc_ty(ccx.tcx);
let td_ptr = ty::mk_ptr(ccx.tcx, ty::mt {
ty: tydesc_ty,
mutbl: ast::m_imm
});
(1u, ~[], td_ptr)
}
"visit_tydesc" => {
let tydesc_name = special_idents::tydesc;
assert!(tcx.intrinsic_defs.contains_key(&tydesc_name));
let (_, tydesc_ty) = tcx.intrinsic_defs.get_copy(&tydesc_name);
let tydesc_ty = ty::get_tydesc_ty(ccx.tcx);
let (_, visitor_object_ty) = ty::visitor_object_ty(tcx);
let td_ptr = ty::mk_ptr(ccx.tcx, ty::mt {
ty: tydesc_ty,

55
src/librustc/middle/typeck/collect.rs
View File

@ -62,55 +62,16 @@ use syntax::opt_vec::OptVec;
use syntax::opt_vec;
pub fn collect_item_types(ccx: @mut CrateCtxt, crate: @ast::crate) {
// FIXME (#2592): hooking into the "intrinsic" root module is crude.
// There ought to be a better approach. Attributes?
for crate.node.module.items.iter().advance |crate_item| {
if crate_item.ident
== ::syntax::parse::token::special_idents::intrinsic {
match crate_item.node {
ast::item_mod(ref m) => {
for m.items.iter().advance |intrinsic_item| {
let def_id = ast::def_id { crate: ast::local_crate,
node: intrinsic_item.id };
let substs = substs {
self_r: None,
self_ty: None,
tps: ~[]
};
match intrinsic_item.node {
ast::item_trait(*) => {
let tref = @ty::TraitRef {def_id: def_id,
substs: substs};
ccx.tcx.intrinsic_traits.insert
(intrinsic_item.ident, tref);
}
ast::item_enum(*) => {
let ty = ty::mk_enum(ccx.tcx, def_id, substs);
ccx.tcx.intrinsic_defs.insert
(intrinsic_item.ident, (def_id, ty));
}
ast::item_struct(*) => {
let ty = ty::mk_struct(ccx.tcx, def_id, substs);
ccx.tcx.intrinsic_defs.insert
(intrinsic_item.ident, (def_id, ty));
}
_ => {}
}
}
}
_ => { }
}
break;
}
fn collect_intrinsic_type(ccx: @mut CrateCtxt,
lang_item: ast::def_id) {
let ty::ty_param_bounds_and_ty { ty: ty, _ } =
ccx.get_item_ty(lang_item);
ccx.tcx.intrinsic_defs.insert(lang_item, ty);
}
collect_intrinsic_type(ccx, ccx.tcx.lang_items.ty_desc());
collect_intrinsic_type(ccx, ccx.tcx.lang_items.opaque());
visit::visit_crate(
crate, ((),
visit::mk_simple_visitor(@visit::SimpleVisitor {

1
src/librustc/rustc.rc
View File

@ -86,7 +86,6 @@ pub mod front {
pub mod config;
pub mod test;
pub mod std_inject;
pub mod intrinsic_inject;
}
pub mod back {

13
src/libstd/at_vec.rs
View File

@ -25,13 +25,16 @@ use vec::ImmutableVector;
pub mod rustrt {
use libc;
use sys;
use vec;
#[cfg(stage0)]
use intrinsic::{TyDesc};
#[cfg(not(stage0))]
use unstable::intrinsics::{TyDesc};
#[abi = "cdecl"]
#[link_name = "rustrt"]
pub extern {
pub unsafe fn vec_reserve_shared_actual(t: *sys::TypeDesc,
pub unsafe fn vec_reserve_shared_actual(t: *TyDesc,
v: **vec::raw::VecRepr,
n: libc::size_t);
}
@ -197,6 +200,10 @@ pub mod raw {
use uint;
use unstable::intrinsics::{move_val_init};
use vec;
#[cfg(stage0)]
use intrinsic::{get_tydesc};
#[cfg(not(stage0))]
use unstable::intrinsics::{get_tydesc};
pub type VecRepr = vec::raw::VecRepr;
pub type SliceRepr = vec::raw::SliceRepr;
@ -258,7 +265,7 @@ pub mod raw {
// Only make the (slow) call into the runtime if we have to
if capacity(*v) < n {
let ptr: **VecRepr = transmute(v);
rustrt::vec_reserve_shared_actual(sys::get_type_desc::<T>(),
rustrt::vec_reserve_shared_actual(get_tydesc::<T>(),
ptr, n as libc::size_t);
}
}

30
src/libstd/cleanup.rs
View File

@ -10,24 +10,19 @@
#[doc(hidden)];
use libc::{c_char, c_void, intptr_t, uintptr_t};
use ptr::mut_null;
use libc::{c_char, intptr_t, uintptr_t};
use ptr::{mut_null};
use repr::BoxRepr;
use sys::TypeDesc;
use cast::transmute;
use unstable::intrinsics::TyDesc;
#[cfg(not(test))] use unstable::lang::clear_task_borrow_list;
#[cfg(not(test))] use ptr::to_unsafe_ptr;
/**
* Runtime structures
*
* NB: These must match the representation in the C++ runtime.
*/
type DropGlue<'self> = &'self fn(**TypeDesc, *c_void);
type FreeGlue<'self> = &'self fn(**TypeDesc, *c_void);
type TaskID = uintptr_t;
struct StackSegment { priv opaque: () }
@ -164,6 +159,19 @@ fn debug_mem() -> bool {
false
}
#[inline]
#[cfg(not(stage0))]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
// This function should be inlined when stage0 is gone
((*tydesc).drop_glue)(data);
}
#[inline]
#[cfg(stage0)]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
((*tydesc).drop_glue)(0 as **TyDesc, data);
}
/// Destroys all managed memory (i.e. @ boxes) held by the current task.
#[cfg(not(test))]
#[lang="annihilate"]
@ -205,9 +213,9 @@ pub unsafe fn annihilate() {
// callback, as the original value may have been freed.
for each_live_alloc(false) |box, uniq| {
if !uniq {
let tydesc: *TypeDesc = transmute(copy (*box).header.type_desc);
let drop_glue: DropGlue = transmute(((*tydesc).drop_glue, 0));
drop_glue(to_unsafe_ptr(&tydesc), transmute(&(*box).data));
let tydesc = (*box).header.type_desc;
let data = transmute(&(*box).data);
call_drop_glue(tydesc, data);
}
}

28
src/libstd/gc.rs
View File

@ -40,12 +40,13 @@ with destructors.
use cast;
use container::{Map, Set};
use io;
use libc::{size_t, uintptr_t};
use libc::{uintptr_t};
use option::{None, Option, Some};
use ptr;
use hashmap::HashSet;
use stackwalk::walk_stack;
use sys;
use unstable::intrinsics::{TyDesc};
pub use stackwalk::Word;
@ -58,17 +59,11 @@ pub struct StackSegment {
}
pub mod rustrt {
use libc::size_t;
use stackwalk::Word;
use super::StackSegment;
#[link_name = "rustrt"]
pub extern {
#[rust_stack]
pub unsafe fn rust_call_tydesc_glue(root: *Word,
tydesc: *Word,
field: size_t);
#[rust_stack]
pub unsafe fn rust_gc_metadata() -> *Word;
@ -125,7 +120,7 @@ unsafe fn is_safe_point(pc: *Word) -> Option<SafePoint> {
return None;
}
type Visitor<'self> = &'self fn(root: **Word, tydesc: *Word) -> bool;
type Visitor<'self> = &'self fn(root: **Word, tydesc: *TyDesc) -> bool;
// Walks the list of roots for the given safe point, and calls visitor
// on each root.
@ -139,7 +134,7 @@ unsafe fn _walk_safe_point(fp: *Word, sp: SafePoint, visitor: Visitor) -> bool {
let stack_roots: *u32 = bump(sp_meta, 2);
let reg_roots: *u8 = bump(stack_roots, num_stack_roots);
let addrspaces: *Word = align_to_pointer(bump(reg_roots, num_reg_roots));
let tydescs: ***Word = bump(addrspaces, num_stack_roots);
let tydescs: ***TyDesc = bump(addrspaces, num_stack_roots);
// Stack roots
let mut sri = 0;
@ -321,6 +316,19 @@ fn expect_sentinel() -> bool { true }
#[cfg(nogc)]
fn expect_sentinel() -> bool { false }
#[inline]
#[cfg(not(stage0))]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
// This function should be inlined when stage0 is gone
((*tydesc).drop_glue)(data);
}
#[inline]
#[cfg(stage0)]
unsafe fn call_drop_glue(tydesc: *TyDesc, data: *i8) {
((*tydesc).drop_glue)(0 as **TyDesc, data);
}
// Entry point for GC-based cleanup. Walks stack looking for exchange
// heap and stack allocations requiring drop, and runs all
// destructors.
@ -364,7 +372,7 @@ pub fn cleanup_stack_for_failure() {
// FIXME #4420: Destroy this box
// FIXME #4330: Destroy this box
} else {
rustrt::rust_call_tydesc_glue(*root, tydesc, 3 as size_t);
call_drop_glue(tydesc, *root as *i8);
}
}
}

2
src/libstd/managed.rs
View File

@ -15,7 +15,7 @@ use ptr::to_unsafe_ptr;
#[cfg(not(test))] use cmp::{Eq, Ord};
pub mod raw {
use intrinsic::TyDesc;
use std::unstable::intrinsics::TyDesc;
pub static RC_EXCHANGE_UNIQUE : uint = (-1) as uint;
pub static RC_MANAGED_UNIQUE : uint = (-2) as uint;

6
src/libstd/reflect.rs
View File

@ -16,8 +16,10 @@ Runtime type reflection
#[allow(missing_doc)];
use intrinsic::{TyDesc, TyVisitor};
use intrinsic::Opaque;
#[cfg(stage0)]
use intrinsic::{Opaque, TyDesc, TyVisitor};
#[cfg(not(stage0))]
use unstable::intrinsics::{Opaque, TyDesc, TyVisitor};
use libc::c_void;
use sys;
use vec;

20
src/libstd/repr.rs
View File

@ -19,9 +19,6 @@ More runtime type reflection
use cast::transmute;
use char;
use container::Container;
use intrinsic;
use intrinsic::{TyDesc, TyVisitor, visit_tydesc};
use intrinsic::Opaque;
use io::{Writer, WriterUtil};
use iterator::IteratorUtil;
use libc::c_void;
@ -34,6 +31,10 @@ use to_str::ToStr;
use vec::raw::{VecRepr, SliceRepr};
use vec;
use vec::{OwnedVector, UnboxedVecRepr};
#[cfg(stage0)]
use intrinsic::{Opaque, TyDesc, TyVisitor, get_tydesc, visit_tydesc};
#[cfg(not(stage0))]
use unstable::intrinsics::{Opaque, TyDesc, TyVisitor, get_tydesc, visit_tydesc};
#[cfg(test)] use io;
@ -564,6 +565,7 @@ impl TyVisitor for ReprVisitor {
fn visit_self(&self) -> bool { true }
fn visit_type(&self) -> bool { true }
#[cfg(not(stage0))]
fn visit_opaque_box(&self) -> bool {
self.writer.write_char('@');
do self.get::<&managed::raw::BoxRepr> |b| {
@ -571,6 +573,16 @@ impl TyVisitor for ReprVisitor {
self.visit_ptr_inner(p, b.header.type_desc);
}
}
#[cfg(stage0)]
fn visit_opaque_box(&self) -> bool {
self.writer.write_char('@');
do self.get::<&managed::raw::BoxRepr> |b| {
let p = ptr::to_unsafe_ptr(&b.data) as *c_void;
unsafe {
self.visit_ptr_inner(p, transmute(b.header.type_desc));
}
}
}
// Type no longer exists, vestigial function.
fn visit_constr(&self, _inner: *TyDesc) -> bool { fail!(); }
@ -581,7 +593,7 @@ impl TyVisitor for ReprVisitor {
pub fn write_repr<T>(writer: @Writer, object: &T) {
unsafe {
let ptr = ptr::to_unsafe_ptr(object) as *c_void;
let tydesc = intrinsic::get_tydesc::<T>();
let tydesc = get_tydesc::<T>();
let u = ReprVisitor(ptr, writer);
let v = reflect::MovePtrAdaptor(u);
visit_tydesc(tydesc, @v as @TyVisitor)

10
src/libstd/rt/global_heap.rs
View File

@ -8,26 +8,22 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use sys::{TypeDesc, size_of};
use sys::{size_of};
use libc::{c_void, size_t, uintptr_t};
use c_malloc = libc::malloc;
use c_free = libc::free;
use managed::raw::{BoxHeaderRepr, BoxRepr};
use cast::transmute;
use unstable::intrinsics::{atomic_xadd,atomic_xsub};
use unstable::intrinsics::{atomic_xadd,atomic_xsub,TyDesc};
use ptr::null;
use intrinsic::TyDesc;
pub unsafe fn malloc(td: *TypeDesc, size: uint) -> *c_void {
pub unsafe fn malloc(td: *TyDesc, size: uint) -> *c_void {
assert!(td.is_not_null());
let total_size = get_box_size(size, (*td).align);
let p = c_malloc(total_size as size_t);
assert!(p.is_not_null());
// FIXME #3475: Converting between our two different tydesc types
let td: *TyDesc = transmute(td);
let box: &mut BoxRepr = transmute(p);
box.header.ref_count = -1; // Exchange values not ref counted
box.header.type_desc = td;

31
src/libstd/sys.rs
View File

@ -17,23 +17,11 @@ use cast;
use gc;
use io;
use libc;
use libc::{c_void, c_char, size_t};
use libc::{c_char, size_t};
use repr;
use str;
use unstable::intrinsics;
pub type FreeGlue<'self> = &'self fn(*TypeDesc, *c_void);
// Corresponds to runtime type_desc type
pub struct TypeDesc {
size: uint,
align: uint,
take_glue: uint,
drop_glue: uint,
free_glue: uint
// Remaining fields not listed
}
/// The representation of a Rust closure
pub struct Closure {
code: *(),
@ -51,23 +39,6 @@ pub mod rustrt {
}
}
/**
* Returns a pointer to a type descriptor.
*
* Useful for calling certain function in the Rust runtime or otherwise
* performing dark magick.
*/
#[inline]
pub fn get_type_desc<T>() -> *TypeDesc {
unsafe { intrinsics::get_tydesc::<T>() as *TypeDesc }
}
/// Returns a pointer to a type descriptor.
#[inline]
pub fn get_type_desc_val<T>(_val: &T) -> *TypeDesc {
get_type_desc::<T>()
}
/// Returns the size of a type
#[inline]
pub fn size_of<T>() -> uint {

10
src/libstd/unstable/exchange_alloc.rs
View File

@ -8,7 +8,7 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use sys::{TypeDesc, size_of};
use sys::size_of;
use libc::{c_void, size_t};
use c_malloc = libc::malloc;
use c_free = libc::free;
@ -16,18 +16,18 @@ use managed::raw::{BoxHeaderRepr, BoxRepr};
use cast::transmute;
use unstable::intrinsics::{atomic_xadd,atomic_xsub};
use ptr::null;
#[cfg(stage0)]
use intrinsic::TyDesc;
#[cfg(not(stage0))]
use unstable::intrinsics::TyDesc;
pub unsafe fn malloc(td: *TypeDesc, size: uint) -> *c_void {
pub unsafe fn malloc(td: *TyDesc, size: uint) -> *c_void {
assert!(td.is_not_null());
let total_size = get_box_size(size, (*td).align);
let p = c_malloc(total_size as size_t);
assert!(p.is_not_null());
// FIXME #3475: Converting between our two different tydesc types
let td: *TyDesc = transmute(td);
let box: &mut BoxRepr = transmute(p);
box.header.ref_count = -1; // Exchange values not ref counted
box.header.type_desc = td;

132
src/libstd/unstable/intrinsics.rs
View File

@ -32,6 +32,130 @@ A quick refresher on memory ordering:
*/
// This is needed to prevent duplicate lang item definitions.
#[cfg(test)]
pub use realstd::unstable::intrinsics::{TyDesc, Opaque, TyVisitor};
#[cfg(not(stage0))]
pub type GlueFn = extern "Rust" fn(*i8);
#[cfg(stage0)]
pub type GlueFn = extern "Rust" fn(**TyDesc, *i8);
// NB: this has to be kept in sync with the Rust ABI.
#[lang="ty_desc"]
#[cfg(not(test))]
pub struct TyDesc {
size: uint,
align: uint,
take_glue: GlueFn,
drop_glue: GlueFn,
free_glue: GlueFn,
visit_glue: GlueFn,
}
#[lang="opaque"]
#[cfg(not(test))]
pub enum Opaque { }
#[lang="ty_visitor"]
#[cfg(not(test))]
pub trait TyVisitor {
fn visit_bot(&self) -> bool;
fn visit_nil(&self) -> bool;
fn visit_bool(&self) -> bool;
fn visit_int(&self) -> bool;
fn visit_i8(&self) -> bool;
fn visit_i16(&self) -> bool;
fn visit_i32(&self) -> bool;
fn visit_i64(&self) -> bool;
fn visit_uint(&self) -> bool;
fn visit_u8(&self) -> bool;
fn visit_u16(&self) -> bool;
fn visit_u32(&self) -> bool;
fn visit_u64(&self) -> bool;
fn visit_float(&self) -> bool;
fn visit_f32(&self) -> bool;
fn visit_f64(&self) -> bool;
fn visit_char(&self) -> bool;
fn visit_str(&self) -> bool;
fn visit_estr_box(&self) -> bool;
fn visit_estr_uniq(&self) -> bool;
fn visit_estr_slice(&self) -> bool;
fn visit_estr_fixed(&self, n: uint, sz: uint, align: uint) -> bool;
fn visit_box(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_uniq(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_ptr(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_rptr(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_vec(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_unboxed_vec(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_box(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_uniq(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_slice(&self, mtbl: uint, inner: *TyDesc) -> bool;
fn visit_evec_fixed(&self, n: uint, sz: uint, align: uint,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_enter_rec(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_rec_field(&self, i: uint, name: &str,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_leave_rec(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_class(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_class_field(&self, i: uint, name: &str,
mtbl: uint, inner: *TyDesc) -> bool;
fn visit_leave_class(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_tup(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_tup_field(&self, i: uint, inner: *TyDesc) -> bool;
fn visit_leave_tup(&self, n_fields: uint,
sz: uint, align: uint) -> bool;
fn visit_enter_enum(&self, n_variants: uint,
get_disr: extern unsafe fn(ptr: *Opaque) -> int,
sz: uint, align: uint) -> bool;
fn visit_enter_enum_variant(&self, variant: uint,
disr_val: int,
n_fields: uint,
name: &str) -> bool;
fn visit_enum_variant_field(&self, i: uint, offset: uint, inner: *TyDesc) -> bool;
fn visit_leave_enum_variant(&self, variant: uint,
disr_val: int,
n_fields: uint,
name: &str) -> bool;
fn visit_leave_enum(&self, n_variants: uint,
get_disr: extern unsafe fn(ptr: *Opaque) -> int,
sz: uint, align: uint) -> bool;
fn visit_enter_fn(&self, purity: uint, proto: uint,
n_inputs: uint, retstyle: uint) -> bool;
fn visit_fn_input(&self, i: uint, mode: uint, inner: *TyDesc) -> bool;
fn visit_fn_output(&self, retstyle: uint, inner: *TyDesc) -> bool;
fn visit_leave_fn(&self, purity: uint, proto: uint,
n_inputs: uint, retstyle: uint) -> bool;
fn visit_trait(&self) -> bool;
fn visit_var(&self) -> bool;
fn visit_var_integral(&self) -> bool;
fn visit_param(&self, i: uint) -> bool;
fn visit_self(&self) -> bool;
fn visit_type(&self) -> bool;
fn visit_opaque_box(&self) -> bool;
fn visit_constr(&self, inner: *TyDesc) -> bool;
fn visit_closure_ptr(&self, ck: uint) -> bool;
}
#[abi = "rust-intrinsic"]
pub extern "rust-intrinsic" {
@ -159,6 +283,9 @@ pub extern "rust-intrinsic" {
pub fn pref_align_of<T>() -> uint;
/// Get a static pointer to a type descriptor.
#[cfg(not(stage0))]
pub fn get_tydesc<T>() -> *TyDesc;
#[cfg(stage0)]
pub fn get_tydesc<T>() -> *();
/// Create a value initialized to zero.
@ -181,9 +308,8 @@ pub extern "rust-intrinsic" {
/// Returns `true` if a type requires drop glue.
pub fn needs_drop<T>() -> bool;
// XXX: intrinsic uses legacy modes and has reference to TyDesc
// and TyVisitor which are in librustc
//fn visit_tydesc(++td: *TyDesc, &&tv: TyVisitor) -> ();
#[cfg(not(stage0))]
pub fn visit_tydesc(td: *TyDesc, tv: @TyVisitor);
pub fn frame_address(f: &once fn(*u8));

15
src/libstd/vec.rs
View File

@ -30,6 +30,10 @@ use sys;
use sys::size_of;
use uint;
use unstable::intrinsics;
#[cfg(stage0)]
use intrinsic::{get_tydesc};
#[cfg(not(stage0))]
use unstable::intrinsics::{get_tydesc};
use vec;
use util;
@ -37,19 +41,22 @@ use util;
pub mod rustrt {
use libc;
use sys;
use vec::raw;
#[cfg(stage0)]
use intrinsic::{TyDesc};
#[cfg(not(stage0))]
use unstable::intrinsics::{TyDesc};
#[abi = "cdecl"]
pub extern {
// These names are terrible. reserve_shared applies
// to ~[] and reserve_shared_actual applies to @[].
#[fast_ffi]
unsafe fn vec_reserve_shared(t: *sys::TypeDesc,
unsafe fn vec_reserve_shared(t: *TyDesc,
v: **raw::VecRepr,
n: libc::size_t);
#[fast_ffi]
unsafe fn vec_reserve_shared_actual(t: *sys::TypeDesc,
unsafe fn vec_reserve_shared_actual(t: *TyDesc,
v: **raw::VecRepr,
n: libc::size_t);
}
@ -78,7 +85,7 @@ pub fn reserve<T>(v: &mut ~[T], n: uint) {
if capacity(v) < n {
unsafe {
let ptr: **raw::VecRepr = cast::transmute(v);
let td = sys::get_type_desc::<T>();
let td = get_tydesc::<T>();
if ((**ptr).box_header.ref_count ==
managed::raw::RC_MANAGED_UNIQUE) {
rustrt::vec_reserve_shared_actual(td, ptr, n as libc::size_t);

200
src/libsyntax/parse/token.rs
View File

@ -331,21 +331,18 @@ pub mod special_idents {
pub static str : ident = ident { name: 19, ctxt: 0}; // for the type
/* outside of libsyntax */
pub static ty_visitor : ident = ident { name: 20, ctxt: 0};
pub static arg : ident = ident { name: 21, ctxt: 0};
pub static descrim : ident = ident { name: 22, ctxt: 0};
pub static clownshoe_abi : ident = ident { name: 23, ctxt: 0};
pub static clownshoe_stack_shim : ident = ident { name: 24, ctxt: 0};
pub static tydesc : ident = ident { name: 25, ctxt: 0};
pub static main : ident = ident { name: 26, ctxt: 0};
pub static opaque : ident = ident { name: 27, ctxt: 0};
pub static blk : ident = ident { name: 28, ctxt: 0};
pub static statik : ident = ident { name: 29, ctxt: 0};
pub static intrinsic : ident = ident { name: 30, ctxt: 0};
pub static clownshoes_foreign_mod: ident = ident { name: 31, ctxt: 0};
pub static unnamed_field: ident = ident { name: 32, ctxt: 0};
pub static c_abi: ident = ident { name: 33, ctxt: 0};
pub static type_self: ident = ident { name: 34, ctxt: 0}; // `Self`
pub static arg : ident = ident { name: 20, ctxt: 0};
pub static descrim : ident = ident { name: 21, ctxt: 0};
pub static clownshoe_abi : ident = ident { name: 22, ctxt: 0};
pub static clownshoe_stack_shim : ident = ident { name: 23, ctxt: 0};
pub static main : ident = ident { name: 24, ctxt: 0};
pub static opaque : ident = ident { name: 25, ctxt: 0};
pub static blk : ident = ident { name: 26, ctxt: 0};
pub static statik : ident = ident { name: 27, ctxt: 0};
pub static clownshoes_foreign_mod: ident = ident { name: 28, ctxt: 0};
pub static unnamed_field: ident = ident { name: 29, ctxt: 0};
pub static c_abi: ident = ident { name: 30, ctxt: 0};
pub static type_self: ident = ident { name: 31, ctxt: 0}; // `Self`
}
/**
@ -426,59 +423,56 @@ fn mk_fresh_ident_interner() -> @ident_interner {
"tt", // 17
"matchers", // 18
"str", // 19
"TyVisitor", // 20
"arg", // 21
"descrim", // 22
"__rust_abi", // 23
"__rust_stack_shim", // 24
"TyDesc", // 25
"main", // 26
"<opaque>", // 27
"blk", // 28
"static", // 29
"intrinsic", // 30
"__foreign_mod__", // 31
"__field__", // 32
"C", // 33
"Self", // 34
"arg", // 20
"descrim", // 21
"__rust_abi", // 22
"__rust_stack_shim", // 23
"main", // 24
"<opaque>", // 25
"blk", // 26
"static", // 27
"__foreign_mod__", // 28
"__field__", // 29
"C", // 30
"Self", // 31
"as", // 35
"break", // 36
"const", // 37
"copy", // 38
"do", // 39
"else", // 40
"enum", // 41
"extern", // 42
"false", // 43
"fn", // 44
"for", // 45
"if", // 46
"impl", // 47
"let", // 48
"__log", // 49
"loop", // 50
"match", // 51
"mod", // 52
"mut", // 53
"once", // 54
"priv", // 55
"pub", // 56
"pure", // 57
"ref", // 58
"return", // 59
"static", // 29 -- also a special ident
"as", // 32
"break", // 33
"const", // 34
"copy", // 35
"do", // 36
"else", // 37
"enum", // 38
"extern", // 39
"false", // 40
"fn", // 41
"for", // 42
"if", // 43
"impl", // 44
"let", // 45
"__log", // 46
"loop", // 47
"match", // 48
"mod", // 49
"mut", // 50
"once", // 51
"priv", // 52
"pub", // 53
"pure", // 54
"ref", // 55
"return", // 56
"static", // 27 -- also a special ident
"self", // 8 -- also a special ident
"struct", // 60
"super", // 61
"true", // 62
"trait", // 63
"type", // 64
"unsafe", // 65
"use", // 66
"while", // 67
"struct", // 57
"super", // 58
"true", // 59
"trait", // 60
"type", // 61
"unsafe", // 62
"use", // 63
"while", // 64
"be", // 68
"be", // 65
];
@ident_interner {
@ -612,42 +606,42 @@ pub mod keywords {
impl Keyword {
pub fn to_ident(&self) -> ident {
match *self {
As => ident { name: 35, ctxt: 0 },
Break => ident { name: 36, ctxt: 0 },
Const => ident { name: 37, ctxt: 0 },
Copy => ident { name: 38, ctxt: 0 },
Do => ident { name: 39, ctxt: 0 },
Else => ident { name: 40, ctxt: 0 },
Enum => ident { name: 41, ctxt: 0 },
Extern => ident { name: 42, ctxt: 0 },
False => ident { name: 43, ctxt: 0 },
Fn => ident { name: 44, ctxt: 0 },
For => ident { name: 45, ctxt: 0 },
If => ident { name: 46, ctxt: 0 },
Impl => ident { name: 47, ctxt: 0 },
Let => ident { name: 48, ctxt: 0 },
__Log => ident { name: 49, ctxt: 0 },
Loop => ident { name: 50, ctxt: 0 },
Match => ident { name: 51, ctxt: 0 },
Mod => ident { name: 52, ctxt: 0 },
Mut => ident { name: 53, ctxt: 0 },
Once => ident { name: 54, ctxt: 0 },
Priv => ident { name: 55, ctxt: 0 },
Pub => ident { name: 56, ctxt: 0 },
Pure => ident { name: 57, ctxt: 0 },
Ref => ident { name: 58, ctxt: 0 },
Return => ident { name: 59, ctxt: 0 },
Static => ident { name: 29, ctxt: 0 },
As => ident { name: 32, ctxt: 0 },
Break => ident { name: 33, ctxt: 0 },
Const => ident { name: 34, ctxt: 0 },
Copy => ident { name: 35, ctxt: 0 },
Do => ident { name: 36, ctxt: 0 },
Else => ident { name: 37, ctxt: 0 },
Enum => ident { name: 38, ctxt: 0 },
Extern => ident { name: 39, ctxt: 0 },
False => ident { name: 40, ctxt: 0 },
Fn => ident { name: 41, ctxt: 0 },
For => ident { name: 42, ctxt: 0 },
If => ident { name: 43, ctxt: 0 },
Impl => ident { name: 44, ctxt: 0 },
Let => ident { name: 45, ctxt: 0 },
__Log => ident { name: 46, ctxt: 0 },
Loop => ident { name: 47, ctxt: 0 },
Match => ident { name: 48, ctxt: 0 },
Mod => ident { name: 49, ctxt: 0 },
Mut => ident { name: 50, ctxt: 0 },
Once => ident { name: 51, ctxt: 0 },
Priv => ident { name: 52, ctxt: 0 },
Pub => ident { name: 53, ctxt: 0 },
Pure => ident { name: 54, ctxt: 0 },
Ref => ident { name: 55, ctxt: 0 },
Return => ident { name: 56, ctxt: 0 },
Static => ident { name: 27, ctxt: 0 },
Self => ident { name: 8, ctxt: 0 },
Struct => ident { name: 60, ctxt: 0 },
Super => ident { name: 61, ctxt: 0 },
True => ident { name: 62, ctxt: 0 },
Trait => ident { name: 63, ctxt: 0 },
Type => ident { name: 64, ctxt: 0 },
Unsafe => ident { name: 65, ctxt: 0 },
Use => ident { name: 66, ctxt: 0 },
While => ident { name: 67, ctxt: 0 },
Be => ident { name: 68, ctxt: 0 },
Struct => ident { name: 57, ctxt: 0 },
Super => ident { name: 58, ctxt: 0 },
True => ident { name: 59, ctxt: 0 },
Trait => ident { name: 60, ctxt: 0 },
Type => ident { name: 61, ctxt: 0 },
Unsafe => ident { name: 62, ctxt: 0 },
Use => ident { name: 63, ctxt: 0 },
While => ident { name: 64, ctxt: 0 },
Be => ident { name: 65, ctxt: 0 },
}
}
}
@ -663,7 +657,7 @@ pub fn is_keyword(kw: keywords::Keyword, tok: &Token) -> bool {
pub fn is_any_keyword(tok: &Token) -> bool {
match *tok {
token::IDENT(sid, false) => match sid.name {
8 | 29 | 35 .. 68 => true,
8 | 27 | 32 .. 65 => true,
_ => false,
},
_ => false
@ -673,7 +667,7 @@ pub fn is_any_keyword(tok: &Token) -> bool {
pub fn is_strict_keyword(tok: &Token) -> bool {
match *tok {
token::IDENT(sid, false) => match sid.name {
8 | 29 | 35 .. 67 => true,
8 | 27 | 32 .. 64 => true,
_ => false,
},
_ => false,
@ -683,7 +677,7 @@ pub fn is_strict_keyword(tok: &Token) -> bool {
pub fn is_reserved_keyword(tok: &Token) -> bool {
match *tok {
token::IDENT(sid, false) => match sid.name {
68 => true,
65 => true,
_ => false,
},
_ => false,

9
src/rt/rust_builtin.cpp
View File

@ -739,15 +739,6 @@ rust_task_deref(rust_task *task) {
task->deref();
}
// Must call on rust stack.
extern "C" CDECL void
rust_call_tydesc_glue(void *root, size_t *tydesc, size_t glue_index) {
void (*glue_fn)(void *, void *, void *) =
(void (*)(void *, void *, void *))tydesc[glue_index];
if (glue_fn)
glue_fn(0, 0, root);
}
// Don't run on the Rust stack!
extern "C" void
rust_log_str(uint32_t level, const char *str, size_t size) {

6
src/rt/rust_task.cpp
View File

@ -183,7 +183,11 @@ void task_start_wrapper(spawn_args *a)
if(env) {
// free the environment (which should be a unique closure).
const type_desc *td = env->td;
td->drop_glue(NULL, NULL, box_body(env));
td->drop_glue(NULL,
#ifdef _RUST_STAGE0
NULL,
#endif
box_body(env));
task->kernel->region()->free(env);
}

8
src/rt/rust_type.h
View File

@ -25,7 +25,11 @@ typedef void (*CDECL spawn_fn)(rust_opaque_box*, void *);
struct type_desc;
typedef void CDECL (glue_fn)(void *, const type_desc **, void *);
typedef void CDECL (glue_fn)(void *,
#ifdef _RUST_STAGE0
const type_desc **,
#endif
void *);
// Corresponds to the boxed data in the @ region. The body follows the
// header; you can obtain a ptr via box_body() below.
@ -57,8 +61,6 @@ struct type_desc {
glue_fn *drop_glue;
glue_fn *free_glue;
glue_fn *visit_glue;
const uint8_t *unused;
const uint8_t *unused2;
};
extern "C" type_desc *rust_clone_type_desc(type_desc*);

2
src/rt/rust_util.cpp
View File

@ -21,8 +21,6 @@ struct type_desc str_body_tydesc = {
NULL, // drop_glue
NULL, // free_glue
NULL, // visit_glue
NULL, // shape
NULL, // shape_tables
};
//

1
src/rt/rustrt.def.in
View File

@ -176,7 +176,6 @@ rust_set_task_local_data
rust_task_local_data_atexit
rust_task_ref
rust_task_deref
rust_call_tydesc_glue
tdefl_compress_mem_to_heap
tinfl_decompress_mem_to_heap
rust_gc_metadata

8
src/test/run-pass/extern-pub.rs
View File

@ -1,11 +1,5 @@
use std::libc;
use std::sys;
use std::vec;
extern {
pub unsafe fn vec_reserve_shared_actual(t: *sys::TypeDesc,
v: **vec::raw::VecRepr,
n: libc::size_t);
pub unsafe fn free(p: *u8);
}
pub fn main() {

20
src/test/run-pass/reflect-visit-data.rs
View File

@ -10,15 +10,14 @@
// xfail-fast
use std::bool;
use std::int;
use std::libc::c_void;
use std::ptr;
use std::sys;
use std::vec::UnboxedVecRepr;
use intrinsic::{TyDesc, get_tydesc, visit_tydesc, TyVisitor, Opaque};
use std::unstable::intrinsics::{TyDesc, get_tydesc, visit_tydesc, TyVisitor, Opaque};
#[doc = "High-level interfaces to `intrinsic::visit_ty` reflection system."]
#[doc = "High-level interfaces to `std::unstable::intrinsics::visit_ty` reflection system."]
/// Trait for visitor that wishes to reflect on data.
trait movable_ptr {
@ -637,7 +636,9 @@ impl TyVisitor for my_visitor {
}
fn get_tydesc_for<T>(_t: T) -> *TyDesc {
get_tydesc::<T>()
unsafe {
get_tydesc::<T>()
}
}
struct Triple { x: int, y: int, z: int }
@ -651,8 +652,8 @@ pub fn main() {
vals: ~[]});
let v = ptr_visit_adaptor(Inner {inner: u});
let td = get_tydesc_for(r);
unsafe { error!("tydesc sz: %u, align: %u",
(*td).size, (*td).align); }
error!("tydesc sz: %u, align: %u",
(*td).size, (*td).align);
let v = @v as @TyVisitor;
visit_tydesc(td, v);
@ -661,8 +662,7 @@ pub fn main() {
println(fmt!("val: %s", *s));
}
error!("%?", u.vals.clone());
assert!(u.vals == ~[
~"1", ~"2", ~"3", ~"true", ~"false", ~"5", ~"4", ~"3", ~"12"
]);
assert_eq!(u.vals.clone(),
~[ ~"1", ~"2", ~"3", ~"true", ~"false", ~"5", ~"4", ~"3", ~"12"]);
}
}
}

171
src/test/run-pass/reflect-visit-type.rs
View File

@ -8,141 +8,153 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// xfail-test
use intrinsic::{TyDesc, get_tydesc, visit_tydesc, TyVisitor};
struct my_visitor(@mut { types: ~[str] });
use std::unstable::intrinsics::{TyDesc, get_tydesc, visit_tydesc, TyVisitor, Opaque};
impl TyVisitor for my_visitor {
fn visit_bot() -> bool {
self.types += ~["bot"];
struct MyVisitor {
types: @mut ~[~str],
}
impl TyVisitor for MyVisitor {
fn visit_bot(&self) -> bool {
self.types.push(~"bot");
error!("visited bot type");
true
}
fn visit_nil() -> bool {
self.types += ~["nil"];
fn visit_nil(&self) -> bool {
self.types.push(~"nil");
error!("visited nil type");
true
}
fn visit_bool() -> bool {
self.types += ~["bool"];
fn visit_bool(&self) -> bool {
self.types.push(~"bool");
error!("visited bool type");
true
}
fn visit_int() -> bool {
self.types += ~["int"];
fn visit_int(&self) -> bool {
self.types.push(~"int");
error!("visited int type");
true
}
fn visit_i8() -> bool {
self.types += ~["i8"];
fn visit_i8(&self) -> bool {
self.types.push(~"i8");
error!("visited i8 type");
true
}
fn visit_i16() -> bool {
self.types += ~["i16"];
fn visit_i16(&self) -> bool {
self.types.push(~"i16");
error!("visited i16 type");
true
}
fn visit_i32() -> bool { true }
fn visit_i64() -> bool { true }
fn visit_i32(&self) -> bool { true }
fn visit_i64(&self) -> bool { true }
fn visit_uint() -> bool { true }
fn visit_u8() -> bool { true }
fn visit_u16() -> bool { true }
fn visit_u32() -> bool { true }
fn visit_u64() -> bool { true }
fn visit_uint(&self) -> bool { true }
fn visit_u8(&self) -> bool { true }
fn visit_u16(&self) -> bool { true }
fn visit_u32(&self) -> bool { true }
fn visit_u64(&self) -> bool { true }
fn visit_float() -> bool { true }
fn visit_f32() -> bool { true }
fn visit_f64() -> bool { true }
fn visit_float(&self) -> bool { true }
fn visit_f32(&self) -> bool { true }
fn visit_f64(&self) -> bool { true }
fn visit_char() -> bool { true }
fn visit_str() -> bool { true }
fn visit_char(&self) -> bool { true }
fn visit_str(&self) -> bool { true }
fn visit_estr_box() -> bool { true }
fn visit_estr_uniq() -> bool { true }
fn visit_estr_slice() -> bool { true }
fn visit_estr_fixed(_sz: uint, _sz: uint,
fn visit_estr_box(&self) -> bool { true }
fn visit_estr_uniq(&self) -> bool { true }
fn visit_estr_slice(&self) -> bool { true }
fn visit_estr_fixed(&self,
_sz: uint, _sz: uint,
_align: uint) -> bool { true }
fn visit_box(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_uniq(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_ptr(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_rptr(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_box(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_uniq(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_ptr(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_rptr(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_vec(_mtbl: uint, inner: *TyDesc) -> bool {
self.types += ~["["];
visit_tydesc(inner, my_visitor(*self) as TyVisitor);
self.types += ~["]"];
fn visit_vec(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_unboxed_vec(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_box(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_uniq(&self, _mtbl: uint, inner: *TyDesc) -> bool {
self.types.push(~"[");
unsafe {
visit_tydesc(inner, (@*self) as @TyVisitor);
}
self.types.push(~"]");
true
}
fn visit_unboxed_vec(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_box(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_uniq(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_slice(_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_fixed(_n: uint, _sz: uint, _align: uint,
fn visit_evec_slice(&self, _mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_evec_fixed(&self, _n: uint, _sz: uint, _align: uint,
_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_enter_rec(_n_fields: uint,
fn visit_enter_rec(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_rec_field(_i: uint, _name: &str,
fn visit_rec_field(&self, _i: uint, _name: &str,
_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_rec(_n_fields: uint,
fn visit_leave_rec(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_enter_class(_n_fields: uint,
fn visit_enter_class(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_class_field(_i: uint, _name: &str,
fn visit_class_field(&self, _i: uint, _name: &str,
_mtbl: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_class(_n_fields: uint,
fn visit_leave_class(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_enter_tup(_n_fields: uint,
fn visit_enter_tup(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_tup_field(_i: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_tup(_n_fields: uint,
fn visit_tup_field(&self, _i: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_tup(&self, _n_fields: uint,
_sz: uint, _align: uint) -> bool { true }
fn visit_enter_enum(_n_variants: uint,
fn visit_enter_enum(&self, _n_variants: uint,
_get_disr: extern unsafe fn(ptr: *Opaque) -> int,
_sz: uint, _align: uint) -> bool { true }
fn visit_enter_enum_variant(_variant: uint,
fn visit_enter_enum_variant(&self,
_variant: uint,
_disr_val: int,
_n_fields: uint,
_name: &str) -> bool { true }
fn visit_enum_variant_field(_i: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_enum_variant(_variant: uint,
fn visit_enum_variant_field(&self, _i: uint, _offset: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_enum_variant(&self,
_variant: uint,
_disr_val: int,
_n_fields: uint,
_name: &str) -> bool { true }
fn visit_leave_enum(_n_variants: uint,
fn visit_leave_enum(&self,
_n_variants: uint,
_get_disr: extern unsafe fn(ptr: *Opaque) -> int,
_sz: uint, _align: uint) -> bool { true }
fn visit_enter_fn(_purity: uint, _proto: uint,
fn visit_enter_fn(&self, _purity: uint, _proto: uint,
_n_inputs: uint, _retstyle: uint) -> bool { true }
fn visit_fn_input(_i: uint, _mode: uint, _inner: *TyDesc) -> bool { true }
fn visit_fn_output(_retstyle: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_fn(_purity: uint, _proto: uint,
fn visit_fn_input(&self, _i: uint, _mode: uint, _inner: *TyDesc) -> bool { true }
fn visit_fn_output(&self, _retstyle: uint, _inner: *TyDesc) -> bool { true }
fn visit_leave_fn(&self, _purity: uint, _proto: uint,
_n_inputs: uint, _retstyle: uint) -> bool { true }
fn visit_trait() -> bool { true }
fn visit_var() -> bool { true }
fn visit_var_integral() -> bool { true }
fn visit_param(_i: uint) -> bool { true }
fn visit_self() -> bool { true }
fn visit_type() -> bool { true }
fn visit_opaque_box() -> bool { true }
fn visit_constr(_inner: *TyDesc) -> bool { true }
fn visit_closure_ptr(_ck: uint) -> bool { true }
fn visit_trait(&self) -> bool { true }
fn visit_var(&self) -> bool { true }
fn visit_var_integral(&self) -> bool { true }
fn visit_param(&self, _i: uint) -> bool { true }
fn visit_self(&self) -> bool { true }
fn visit_type(&self) -> bool { true }
fn visit_opaque_box(&self) -> bool { true }
fn visit_constr(&self, _inner: *TyDesc) -> bool { true }
fn visit_closure_ptr(&self, _ck: uint) -> bool { true }
}
fn visit_ty<T>(v: TyVisitor) {
visit_tydesc(get_tydesc::<T>(), v);
fn visit_ty<T>(v: @TyVisitor) {
unsafe {
visit_tydesc(get_tydesc::<T>(), v);
}
}
pub fn main() {
let v = my_visitor(@mut {types: ~[]});
let vv = v as TyVisitor;
let v = @MyVisitor {types: @mut ~[]};
let vv = v as @TyVisitor;
visit_ty::<bool>(vv);
visit_ty::<int>(vv);
@ -150,9 +162,8 @@ pub fn main() {
visit_ty::<i16>(vv);
visit_ty::<~[int]>(vv);
for (v.types.clone()).each {|s|
io::println(fmt!("type: %s", s));
for v.types.iter().advance |&s| {
println(fmt!("type: %s", s));
}
assert!(v.types == ["bool", "int", "i8", "i16",
"[", "int", "]"]);
assert_eq!((*v.types).clone(), ~[~"bool", ~"int", ~"i8", ~"i16", ~"[", ~"int", ~"]"]);
}