Don't destructure args tuple in format_args!
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3326f19e89
commit
a9a24d5106
7 changed files with 13 additions and 20 deletions
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@ -763,13 +763,8 @@ impl<'a, 'b> Context<'a, 'b> {
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let mut locals =
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let mut locals =
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Vec::with_capacity((0..self.args.len()).map(|i| self.arg_unique_types[i].len()).sum());
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Vec::with_capacity((0..self.args.len()).map(|i| self.arg_unique_types[i].len()).sum());
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let mut counts = Vec::with_capacity(self.count_args.len());
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let mut counts = Vec::with_capacity(self.count_args.len());
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let mut pats = Vec::with_capacity(self.args.len());
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let mut heads = Vec::with_capacity(self.args.len());
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let mut heads = Vec::with_capacity(self.args.len());
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let names_pos: Vec<_> = (0..self.args.len())
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.map(|i| Ident::from_str_and_span(&format!("arg{}", i), self.macsp))
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.collect();
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// First, build up the static array which will become our precompiled
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// First, build up the static array which will become our precompiled
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// format "string"
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// format "string"
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let pieces = self.ecx.expr_vec_slice(self.fmtsp, self.str_pieces);
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let pieces = self.ecx.expr_vec_slice(self.fmtsp, self.str_pieces);
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@ -787,11 +782,8 @@ impl<'a, 'b> Context<'a, 'b> {
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// of each variable because we don't want to move out of the arguments
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// of each variable because we don't want to move out of the arguments
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// passed to this function.
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// passed to this function.
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for (i, e) in self.args.into_iter().enumerate() {
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for (i, e) in self.args.into_iter().enumerate() {
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let name = names_pos[i];
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let span = self.ecx.with_def_site_ctxt(e.span);
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pats.push(self.ecx.pat_ident(span, name));
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for arg_ty in self.arg_unique_types[i].iter() {
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for arg_ty in self.arg_unique_types[i].iter() {
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locals.push(Context::format_arg(self.ecx, self.macsp, e.span, arg_ty, name));
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locals.push(Context::format_arg(self.ecx, self.macsp, e.span, arg_ty, i));
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}
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}
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heads.push(self.ecx.expr_addr_of(e.span, e));
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heads.push(self.ecx.expr_addr_of(e.span, e));
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}
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}
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@ -800,9 +792,8 @@ impl<'a, 'b> Context<'a, 'b> {
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Exact(i) => i,
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Exact(i) => i,
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_ => panic!("should never happen"),
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_ => panic!("should never happen"),
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};
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};
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let name = names_pos[index];
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let span = spans_pos[index];
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let span = spans_pos[index];
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counts.push(Context::format_arg(self.ecx, self.macsp, span, &Count, name));
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counts.push(Context::format_arg(self.ecx, self.macsp, span, &Count, index));
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}
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}
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// Now create a vector containing all the arguments
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// Now create a vector containing all the arguments
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@ -838,7 +829,7 @@ impl<'a, 'b> Context<'a, 'b> {
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// But the nested match expression is proved to perform not as well
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// But the nested match expression is proved to perform not as well
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// as series of let's; the first approach does.
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// as series of let's; the first approach does.
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let args_match = {
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let args_match = {
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let pat = self.ecx.pat_tuple(self.macsp, pats);
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let pat = self.ecx.pat_ident(self.macsp, Ident::new(sym::_args, self.macsp));
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let arm = self.ecx.arm(self.macsp, pat, args_array);
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let arm = self.ecx.arm(self.macsp, pat, args_array);
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let head = self.ecx.expr(self.macsp, ast::ExprKind::Tup(heads));
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let head = self.ecx.expr(self.macsp, ast::ExprKind::Tup(heads));
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self.ecx.expr_match(self.macsp, head, vec![arm])
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self.ecx.expr_match(self.macsp, head, vec![arm])
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@ -877,10 +868,11 @@ impl<'a, 'b> Context<'a, 'b> {
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macsp: Span,
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macsp: Span,
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mut sp: Span,
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mut sp: Span,
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ty: &ArgumentType,
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ty: &ArgumentType,
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arg: Ident,
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arg_index: usize,
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) -> P<ast::Expr> {
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) -> P<ast::Expr> {
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sp = ecx.with_def_site_ctxt(sp);
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sp = ecx.with_def_site_ctxt(sp);
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let arg = ecx.expr_ident(sp, arg);
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let arg = ecx.expr_ident(sp, Ident::new(sym::_args, sp));
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let arg = ecx.expr(sp, ast::ExprKind::Field(arg, Ident::new(sym::integer(arg_index), sp)));
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let trait_ = match *ty {
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let trait_ = match *ty {
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Placeholder(trait_) if trait_ == "<invalid>" => return DummyResult::raw_expr(sp, true),
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Placeholder(trait_) if trait_ == "<invalid>" => return DummyResult::raw_expr(sp, true),
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Placeholder(trait_) => trait_,
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Placeholder(trait_) => trait_,
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@ -271,6 +271,7 @@ symbols! {
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__S,
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__S,
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__next,
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__next,
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__try_var,
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__try_var,
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_args,
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_d,
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_d,
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_e,
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_e,
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_task_context,
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_task_context,
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@ -12,7 +12,7 @@ fn main() {
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{
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{
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::std::io::_print(::core::fmt::Arguments::new_v1(&["rust\n"],
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::std::io::_print(::core::fmt::Arguments::new_v1(&["rust\n"],
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&match () {
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&match () {
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() => [],
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_args => [],
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}));
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}));
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};
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};
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}
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}
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@ -45,7 +45,7 @@ pub fn bar() ({
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as
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as
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())
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())
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{
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{
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()
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_args
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=>
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=>
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([]
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([]
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as
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as
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@ -19,8 +19,8 @@ error: unexpected token: `{
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let res =
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let res =
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::alloc::fmt::format(::core::fmt::Arguments::new_v1(&[""],
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::alloc::fmt::format(::core::fmt::Arguments::new_v1(&[""],
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&match (&"u8",) {
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&match (&"u8",) {
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(arg0,) =>
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_args =>
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[::core::fmt::ArgumentV1::new(arg0,
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[::core::fmt::ArgumentV1::new(_args.0,
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::core::fmt::Display::fmt)],
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::core::fmt::Display::fmt)],
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}));
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}));
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res
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res
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@ -9,7 +9,7 @@ LL | let c1 : () = c;
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| expected due to this
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| expected due to this
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= note: expected unit type `()`
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= note: expected unit type `()`
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found closure `[mod1::f<T>::{closure#0} closure_substs=(unavailable) substs=[T, _#25t, extern "rust-call" fn(()), _#26t]]`
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found closure `[mod1::f<T>::{closure#0} closure_substs=(unavailable) substs=[T, _#22t, extern "rust-call" fn(()), _#23t]]`
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help: use parentheses to call this closure
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help: use parentheses to call this closure
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LL | let c1 : () = c();
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LL | let c1 : () = c();
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@ -9,7 +9,7 @@ LL | let c1 : () = c;
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| expected due to this
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| expected due to this
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= note: expected unit type `()`
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= note: expected unit type `()`
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found closure `[f<T>::{closure#0} closure_substs=(unavailable) substs=[T, _#25t, extern "rust-call" fn(()), _#26t]]`
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found closure `[f<T>::{closure#0} closure_substs=(unavailable) substs=[T, _#22t, extern "rust-call" fn(()), _#23t]]`
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help: use parentheses to call this closure
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help: use parentheses to call this closure
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LL | let c1 : () = c();
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LL | let c1 : () = c();
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