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syntax/rustc: Less copy

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This commit is contained in:
Tim Chevalier 2013-01-24 16:45:20 -08:00
parent 5ff6beed60
commit f19e16881e
3 changed files with 18 additions and 17 deletions
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25
src/librustc/middle/astencode.rs
View File

@ -133,14 +133,13 @@ fn decode_inlined_item(cdata: cstore::crate_metadata,
to_id_range: to_id_range});
let raw_ii = decode_ast(ast_doc);
let ii = renumber_ast(xcx, raw_ii);
// XXX: Bad copy of `path`.
ast_map::map_decoded_item(tcx.sess.diagnostic(),
dcx.tcx.items, copy path, ii);
debug!("Fn named: %s", tcx.sess.str_of(ii.ident()));
decode_side_tables(xcx, ast_doc);
debug!("< Decoded inlined fn: %s::%s",
ast_map::path_to_str(path, tcx.sess.parse_sess.interner),
tcx.sess.str_of(ii.ident()));
ast_map::map_decoded_item(tcx.sess.diagnostic(),
dcx.tcx.items, path, ii);
decode_side_tables(xcx, ast_doc);
match ii {
ast::ii_item(i) => {
debug!(">>> DECODED ITEM >>>\n%s\n<<< DECODED ITEM <<<",
@ -309,10 +308,13 @@ fn simplify_ast(ii: ast::inlined_item) -> ast::inlined_item {
ast::stmt_mac(*) => fail ~"unexpanded macro in astencode"
}
};
// XXX: Bad copy.
let blk_sans_items = ast::blk_ {
view_items: ~[], // I don't know if we need the view_items here,
// but it doesn't break tests!
stmts: stmts_sans_items,
.. copy blk
expr: blk.expr,
id: blk.id,
rules: blk.rules
};
fold::noop_fold_block(blk_sans_items, fld)
}
@ -592,7 +594,7 @@ fn encode_vtable_res(ecx: @e::encode_ctxt,
// ty::t doesn't work, and there is no way (atm) to have
// hand-written encoding routines combine with auto-generated
// ones. perhaps we should fix this.
do ebml_w.emit_from_vec(/*bad*/copy *dr) |vtable_origin| {
do ebml_w.emit_from_vec(*dr) |vtable_origin| {
encode_vtable_origin(ecx, ebml_w, *vtable_origin)
}
}
@ -742,8 +744,7 @@ impl writer::Encoder: ebml_writer_helpers {
}
fn emit_tys(ecx: @e::encode_ctxt, tys: ~[ty::t]) {
// XXX: Bad copy.
do self.emit_from_vec(copy tys) |ty| {
do self.emit_from_vec(tys) |ty| {
self.emit_ty(ecx, *ty)
}
}
@ -756,8 +757,8 @@ impl writer::Encoder: ebml_writer_helpers {
fn emit_tpbt(ecx: @e::encode_ctxt, tpbt: ty::ty_param_bounds_and_ty) {
do self.emit_rec {
do self.emit_field(~"bounds", 0u) {
do self.emit_from_vec(/*bad*/copy *tpbt.bounds) |bs| {
do self.emit_field(~"bounds", 0) {
do self.emit_from_vec(*tpbt.bounds) |bs| {
self.emit_bounds(ecx, *bs);
}
}
@ -840,7 +841,7 @@ fn encode_side_tables_for_id(ecx: @e::encode_ctxt,
do ebml_w.tag(c::tag_table_freevars) {
ebml_w.id(id);
do ebml_w.tag(c::tag_table_val) {
do ebml_w.emit_from_vec(/*bad*/copy **fv) |fv_entry| {
do ebml_w.emit_from_vec(**fv) |fv_entry| {
encode_freevar_entry(ebml_w, *fv_entry)
}
}

4
src/libstd/serialize.rs
View File

@ -566,11 +566,11 @@ pub impl<
// In some cases, these should eventually be coded as traits.
pub trait EncoderHelpers {
fn emit_from_vec<T>(&self, v: ~[T], f: fn(v: &T));
fn emit_from_vec<T>(&self, v: &[T], f: fn(v: &T));
}
pub impl<S: Encoder> S: EncoderHelpers {
fn emit_from_vec<T>(&self, v: ~[T], f: fn(v: &T)) {
fn emit_from_vec<T>(&self, v: &[T], f: fn(v: &T)) {
do self.emit_owned_vec(v.len()) {
for v.eachi |i, e| {
do self.emit_vec_elt(i) {

6
src/libsyntax/ast_map.rs
View File

@ -149,7 +149,7 @@ fn map_crate(diag: span_handler, c: crate) -> map {
// crate. The `path` should be the path to the item but should not include
// the item itself.
fn map_decoded_item(diag: span_handler,
map: map, +path: path, ii: inlined_item) {
map: map, path: path, ii: inlined_item) {
// I believe it is ok for the local IDs of inlined items from other crates
// to overlap with the local ids from this crate, so just generate the ids
// starting from 0. (In particular, I think these ids are only used in
@ -158,8 +158,8 @@ fn map_decoded_item(diag: span_handler,
// variables that are simultaneously in scope).
let cx = ctx {
map: map,
mut path: /* FIXME (#2543) */ copy path,
mut local_id: 0u,
mut path: path,
mut local_id: 0,
diag: diag,
};
let v = mk_ast_map_visitor();