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librustc: Allow expr_repeat to be used with any vstore

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This commit is contained in:
Patrick Walton 2013-03-27 13:53:03 -07:00
parent 2a74fda316
commit 70b56fa5e9
4 changed files with 41 additions and 14 deletions
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2
src/libcore/rt/context.rs
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@ -126,7 +126,7 @@ fn initialize_call_frame(regs: &mut Registers, fptr: *c_void, arg: *c_void, sp:
type Registers = [uint, ..22];
#[cfg(target_arch = "x86_64")]
fn new_regs() -> ~Registers { ~[0, .. 22] }
fn new_regs() -> ~Registers { ~([0, .. 22]) }
#[cfg(target_arch = "x86_64")]
fn initialize_call_frame(regs: &mut Registers, fptr: *c_void, arg: *c_void, sp: *mut uint) {

14
src/librustc/middle/typeck/check/mod.rs
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@ -2187,17 +2187,21 @@ fn check_loop_body(fcx: @mut FnCtxt,
let count = ty::eval_repeat_count(tcx, count_expr);
check_expr_with_hint(fcx, count_expr, ty::mk_uint(tcx));
let tt = ast_expr_vstore_to_vstore(fcx, ev, count, vst);
let mutability = match vst {
ast::expr_vstore_mut_box | ast::expr_vstore_mut_slice => {
ast::m_mutbl
}
_ => mutbl
};
let t: ty::t = fcx.infcx().next_ty_var();
check_expr_has_type(fcx, element, t);
let arg_t = fcx.expr_ty(element);
if ty::type_is_error(arg_t) {
ty::mk_err(tcx)
}
else if ty::type_is_bot(arg_t) {
} else if ty::type_is_bot(arg_t) {
ty::mk_bot(tcx)
}
else {
ty::mk_evec(tcx, ty::mt {ty: t, mutbl: mutbl}, tt)
} else {
ty::mk_evec(tcx, ty::mt {ty: t, mutbl: mutability}, tt)
}
}
_ =>

16
src/libsyntax/parse/parser.rs
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@ -232,7 +232,7 @@ pub fn Parser(sess: @mut ParseSess,
token: @mut copy tok0.tok,
span: @mut copy tok0.sp,
last_span: @mut copy tok0.sp,
buffer: @mut [copy tok0, .. 4],
buffer: @mut ([copy tok0, .. 4]),
buffer_start: @mut 0,
buffer_end: @mut 0,
tokens_consumed: @mut 0,
@ -1661,12 +1661,11 @@ fn parse_prefix_expr(&self) -> @expr {
hi = e.span.hi;
// HACK: turn @[...] into a @-evec
ex = match e.node {
expr_vec(*) if m == m_mutbl =>
expr_vec(*) | expr_repeat(*) if m == m_mutbl =>
expr_vstore(e, expr_vstore_mut_box),
expr_vec(*) if m == m_imm => expr_vstore(e, expr_vstore_box),
expr_lit(@codemap::spanned {
node: lit_str(_), span: _}) if m == m_imm =>
expr_vstore(e, expr_vstore_box),
expr_vec(*) |
expr_lit(@codemap::spanned { node: lit_str(_), span: _}) |
expr_repeat(*) if m == m_imm => expr_vstore(e, expr_vstore_box),
_ => expr_unary(box(m), e)
};
}
@ -1681,8 +1680,9 @@ fn parse_prefix_expr(&self) -> @expr {
hi = e.span.hi;
// HACK: turn ~[...] into a ~-evec
ex = match e.node {
expr_vec(*) | expr_lit(@codemap::spanned {
node: lit_str(_), span: _})
expr_vec(*) |
expr_lit(@codemap::spanned { node: lit_str(_), span: _}) |
expr_repeat(*)
if m == m_imm => expr_vstore(e, expr_vstore_uniq),
_ => expr_unary(uniq(m), e)
};

23
src/test/run-pass/expr-repeat-vstore.rs Normal file
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@ -0,0 +1,23 @@
use core::io::println;
fn main() {
let v: ~[int] = ~[ 1, ..5 ];
println(v[0].to_str());
println(v[1].to_str());
println(v[2].to_str());
println(v[3].to_str());
println(v[4].to_str());
let v: @[int] = @[ 2, ..5 ];
println(v[0].to_str());
println(v[1].to_str());
println(v[2].to_str());
println(v[3].to_str());
println(v[4].to_str());
let v: @mut [int] = @mut [ 3, ..5 ];
println((copy v[0]).to_str());
println((copy v[1]).to_str());
println((copy v[2]).to_str());
println((copy v[3]).to_str());
println((copy v[4]).to_str());
}