bjoernager/rust
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Create core::fmt::ArgumentV1 with generics instead of fn pointer

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This commit is contained in:
Gary Guo 2021-10-18 00:41:57 +01:00
parent bfe1564676
commit a832f5f7bc
12 changed files with 98 additions and 72 deletions
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18
compiler/rustc_builtin_macros/src/format.rs
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@ -877,11 +877,21 @@ impl<'a, 'b> Context<'a, 'b> {
return ecx.expr_call_global(macsp, path, vec![arg]);
}
};
let new_fn_name = match trait_ {
"Display" => "new_display",
"Debug" => "new_debug",
"LowerExp" => "new_lower_exp",
"UpperExp" => "new_upper_exp",
"Octal" => "new_octal",
"Pointer" => "new_pointer",
"Binary" => "new_binary",
"LowerHex" => "new_lower_hex",
"UpperHex" => "new_upper_hex",
_ => unreachable!(),
};
let path = ecx.std_path(&[sym::fmt, Symbol::intern(trait_), sym::fmt]);
let format_fn = ecx.path_global(sp, path);
let path = ecx.std_path(&[sym::fmt, sym::ArgumentV1, sym::new]);
ecx.expr_call_global(macsp, path, vec![arg, ecx.expr_path(format_fn)])
let path = ecx.std_path(&[sym::fmt, sym::ArgumentV1, Symbol::intern(new_fn_name)]);
ecx.expr_call_global(sp, path, vec![arg])
}
}