ident_fragment.rs.html -- source

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failure

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getrandom

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lock_api

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log

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memchr

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opaque_debug

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parking_lot_core

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lib.rs parking_lot.rs spinwait.rs util.rs word_lock.rs

paste

paste_impl

enum_hack.rs lib.rs

pbkdf2

pin_project

pin_project_internal

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pin_utils

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ppv_lite86

x86_64

lib.rs soft.rs types.rs

primitive_types

proc_macro2

detection.rs fallback.rs lib.rs parse.rs wrapper.rs

proc_macro_crate

proc_macro_hack

error.rs iter.rs lib.rs parse.rs quote.rs

proc_macro_nested

quote

ext.rs format.rs ident_fragment.rs lib.rs runtime.rs spanned.rs to_tokens.rs

radium

rand

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rand_core

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rand_pcg

lib.rs pcg128.rs pcg64.rs

ref_cast

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ref_cast_impl

regex

regex_syntax

rental

rental_impl

rlp

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rustc_demangle

legacy.rs lib.rs v0.rs

rustc_hash

rustc_hex

schnorrkel

batch.rs cert.rs context.rs derive.rs errors.rs keys.rs lib.rs musig.rs points.rs scalars.rs serdey.rs sign.rs vrf.rs

scopeguard

secp256k1

ecmult

der.rs ecdh.rs ecdsa.rs error.rs field.rs group.rs lib.rs scalar.rs

serde

de

from_primitive.rs ignored_any.rs impls.rs mod.rs utf8.rs value.rs

private

de.rs macros.rs mod.rs ser.rs

ser

fmt.rs impls.rs impossible.rs mod.rs

export.rs integer128.rs lib.rs macros.rs

serde_derive

internals

ast.rs attr.rs case.rs check.rs ctxt.rs mod.rs symbol.rs

bound.rs de.rs dummy.rs fragment.rs lib.rs pretend.rs ser.rs try.rs

sha2

consts.rs lib.rs sha256.rs sha256_utils.rs sha512.rs sha512_utils.rs

slab

smallvec

sp_application_crypto

ecdsa.rs ed25519.rs lib.rs sr25519.rs traits.rs

sp_arithmetic

biguint.rs fixed_point.rs helpers_128bit.rs lib.rs per_things.rs rational128.rs traits.rs

sp_core

offchain

mod.rs storage.rs testing.rs

changes_trie.rs crypto.rs ecdsa.rs ed25519.rs hash.rs hasher.rs hashing.rs hexdisplay.rs lib.rs sandbox.rs sr25519.rs tasks.rs testing.rs traits.rs u32_trait.rs uint.rs vrf.rs

sp_debug_derive

impls.rs lib.rs

sp_externalities

extensions.rs lib.rs scope_limited.rs

sp_inherents

sp_io

batch_verifier.rs lib.rs

sp_panic_handler

sp_runtime

generic

block.rs checked_extrinsic.rs digest.rs era.rs header.rs mod.rs unchecked_extrinsic.rs

offchain

http.rs mod.rs storage.rs storage_lock.rs

curve.rs lib.rs random_number_generator.rs runtime_string.rs testing.rs traits.rs transaction_validity.rs

sp_runtime_interface

host.rs impls.rs lib.rs pass_by.rs util.rs wasm.rs

sp_runtime_interface_proc_macro

pass_by

codec.rs enum_.rs inner.rs mod.rs

runtime_interface

bare_function_interface.rs host_function_interface.rs mod.rs trait_decl_impl.rs

lib.rs utils.rs

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lib.rs with_std.rs

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sp_trie

error.rs lib.rs node_codec.rs node_header.rs storage_proof.rs trie_stream.rs

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lib.rs wasmi_impl.rs

stable_deref_trait

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substrate_bip39

subtle

syn

synstructure

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thread_local

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tiny_keccak

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toml

datetime.rs de.rs lib.rs macros.rs map.rs ser.rs spanned.rs tokens.rs value.rs

tracing

dispatcher.rs field.rs level_filters.rs lib.rs macros.rs span.rs stdlib.rs subscriber.rs

tracing_attributes

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callsite.rs dispatcher.rs event.rs field.rs lib.rs metadata.rs parent.rs span.rs stdlib.rs subscriber.rs

trie_db

trie_root

twox_hash

lib.rs sixty_four.rs std_support.rs thirty_two.rs

typenum

array.rs bit.rs int.rs lib.rs marker_traits.rs operator_aliases.rs private.rs type_operators.rs uint.rs

uint

unicode_normalization

__test_api.rs decompose.rs lib.rs lookups.rs normalize.rs perfect_hash.rs quick_check.rs recompose.rs stream_safe.rs tables.rs

unicode_xid

lib.rs tables.rs

wasmi

memory

mmap_bytebuf.rs mod.rs

prepare

compile.rs mod.rs

func.rs global.rs host.rs imports.rs isa.rs lib.rs module.rs nan_preserving_float.rs runner.rs table.rs types.rs value.rs

wasmi_validation

context.rs func.rs lib.rs stack.rs util.rs

zeroize

zeroize_derive

use proc_macro2::{Ident, Span};
use std::borrow::Cow;
use std::fmt;

/// Specialized formatting trait used by `format_ident!`.
///
/// [`Ident`] arguments formatted using this trait will have their `r#` prefix
/// stripped, if present.
///
/// See [`format_ident!`] for more information.
pub trait IdentFragment {
    /// Format this value as an identifier fragment.
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result;

    /// Span associated with this `IdentFragment`.
    ///
    /// If non-`None`, may be inherited by formatted identifiers.
    fn span(&self) -> Option<Span> {
        None
    }
}

impl<T: IdentFragment + ?Sized> IdentFragment for &T {
    fn span(&self) -> Option<Span> {
        <T as IdentFragment>::span(*self)
    }

    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        IdentFragment::fmt(*self, f)
    }
}

impl<T: IdentFragment + ?Sized> IdentFragment for &mut T {
    fn span(&self) -> Option<Span> {
        <T as IdentFragment>::span(*self)
    }

    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        IdentFragment::fmt(*self, f)
    }
}

impl IdentFragment for Ident {
    fn span(&self) -> Option<Span> {
        Some(self.span())
    }

    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let id = self.to_string();
        if id.starts_with("r#") {
            fmt::Display::fmt(&id[2..], f)
        } else {
            fmt::Display::fmt(&id[..], f)
        }
    }
}

impl<T> IdentFragment for Cow<'_, T>
where
    T: IdentFragment + ToOwned + ?Sized,
{
    fn span(&self) -> Option<Span> {
        T::span(self)
    }

    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        T::fmt(self, f)
    }
}

// Limited set of types which this is implemented for, as we want to avoid types
// which will often include non-identifier characters in their `Display` impl.
macro_rules! ident_fragment_display {
    ($($T:ty),*) => {
        $(
            impl IdentFragment for $T {
                fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                    fmt::Display::fmt(self, f)
                }
            }
        )*
    }
}

ident_fragment_display!(bool, str, String, char);
ident_fragment_display!(u8, u16, u32, u64, u128, usize);