Struct syntax::feature_gate::Features

pub struct Features {
    pub declared_stable_lang_features: Vec<(Symbol, Span)>,
    pub declared_lib_features: Vec<(Symbol, Span)>,
    pub asm: bool,
    pub concat_idents: bool,
    pub link_args: bool,
    pub log_syntax: bool,
    pub non_ascii_idents: bool,
    pub plugin_registrar: bool,
    pub thread_local: bool,
    pub trace_macros: bool,
    pub intrinsics: bool,
    pub lang_items: bool,
    pub link_llvm_intrinsics: bool,
    pub linkage: bool,
    pub quote: bool,
    pub rustc_diagnostic_macros: bool,
    pub rustc_const_unstable: bool,
    pub advanced_slice_patterns: bool,
    pub box_syntax: bool,
    pub placement_in_syntax: bool,
    pub unboxed_closures: bool,
    pub fundamental: bool,
    pub main: bool,
    pub needs_allocator: bool,
    pub on_unimplemented: bool,
    pub plugin: bool,
    pub simd_ffi: bool,
    pub start: bool,
    pub structural_match: bool,
    pub panic_runtime: bool,
    pub needs_panic_runtime: bool,
    pub optin_builtin_traits: bool,
    pub macro_reexport: bool,
    pub staged_api: bool,
    pub no_core: bool,
    pub box_patterns: bool,
    pub dropck_parametricity: bool,
    pub dropck_eyepatch: bool,
    pub custom_attribute: bool,
    pub custom_derive: bool,
    pub rustc_attrs: bool,
    pub nll: bool,
    pub allow_internal_unstable: bool,
    pub allow_internal_unsafe: bool,
    pub slice_patterns: bool,
    pub const_fn: bool,
    pub prelude_import: bool,
    pub default_type_parameter_fallback: bool,
    pub associated_type_defaults: bool,
    pub repr_simd: bool,
    pub cfg_target_feature: bool,
    pub platform_intrinsics: bool,
    pub unwind_attributes: bool,
    pub naked_functions: bool,
    pub no_debug: bool,
    pub omit_gdb_pretty_printer_section: bool,
    pub cfg_target_vendor: bool,
    pub stmt_expr_attributes: bool,
    pub type_ascription: bool,
    pub cfg_target_thread_local: bool,
    pub abi_vectorcall: bool,
    pub inclusive_range_syntax: bool,
    pub exclusive_range_pattern: bool,
    pub specialization: bool,
    pub cfg_target_has_atomic: bool,
    pub conservative_impl_trait: bool,
    pub universal_impl_trait: bool,
    pub never_type: bool,
    pub attr_literals: bool,
    pub untagged_unions: bool,
    pub compiler_builtins: bool,
    pub generic_param_attrs: bool,
    pub link_cfg: bool,
    pub use_extern_macros: bool,
    pub target_feature: bool,
    pub abi_ptx: bool,
    pub i128_type: bool,
    pub repr128: bool,
    pub abi_unadjusted: bool,
    pub proc_macro: bool,
    pub decl_macro: bool,
    pub static_nobundle: bool,
    pub abi_msp430_interrupt: bool,
    pub sanitizer_runtime: bool,
    pub profiler_runtime: bool,
    pub abi_x86_interrupt: bool,
    pub catch_expr: bool,
    pub used: bool,
    pub global_asm: bool,
    pub overlapping_marker_traits: bool,
    pub macro_vis_matcher: bool,
    pub abi_thiscall: bool,
    pub allow_fail: bool,
    pub unsized_tuple_coercion: bool,
    pub generators: bool,
    pub trait_alias: bool,
    pub global_allocator: bool,
    pub allocator_internals: bool,
    pub doc_cfg: bool,
    pub doc_masked: bool,
    pub doc_spotlight: bool,
    pub external_doc: bool,
    pub fn_must_use: bool,
    pub non_exhaustive: bool,
    pub clone_closures: bool,
    pub copy_closures: bool,
    pub underscore_lifetimes: bool,
    pub dotdoteq_in_patterns: bool,
    pub match_default_bindings: bool,
    pub dyn_trait: bool,
    pub crate_visibility_modifier: bool,
    pub extern_types: bool,
    pub arbitrary_self_types: bool,
    pub crate_in_paths: bool,
    pub in_band_lifetimes: bool,
    pub generic_associated_types: bool,
    pub extern_absolute_paths: bool,
    pub non_modrs_mods: bool,
    pub termination_trait: bool,
    pub macro_lifetime_matcher: bool,
    pub extern_in_paths: bool,
    pub repr_transparent: bool,
    pub macro_at_most_once_rep: bool,
    pub if_while_or_patterns: bool,
    pub pattern_parentheses: bool,
}

A set of features to be used by later passes.

Fields

declared_stable_lang_features: Vec<(Symbol, Span)>

#![feature] attrs for stable language features, for error reporting

declared_lib_features: Vec<(Symbol, Span)>

#![feature] attrs for non-language (library) features

asm: bool

concat_idents: bool

link_args: bool

log_syntax: bool

non_ascii_idents: bool

plugin_registrar: bool

thread_local: bool

trace_macros: bool

intrinsics: bool

lang_items: bool

link_llvm_intrinsics: bool

linkage: bool

quote: bool

rustc_diagnostic_macros: bool

rustc_const_unstable: bool

advanced_slice_patterns: bool

box_syntax: bool

placement_in_syntax: bool

unboxed_closures: bool

fundamental: bool

main: bool

needs_allocator: bool

on_unimplemented: bool

plugin: bool

simd_ffi: bool

start: bool

structural_match: bool

panic_runtime: bool

needs_panic_runtime: bool

optin_builtin_traits: bool

macro_reexport: bool

staged_api: bool

no_core: bool

box_patterns: bool

dropck_parametricity: bool

dropck_eyepatch: bool

custom_attribute: bool

custom_derive: bool

rustc_attrs: bool

nll: bool

allow_internal_unstable: bool

allow_internal_unsafe: bool

slice_patterns: bool

const_fn: bool

prelude_import: bool

default_type_parameter_fallback: bool

associated_type_defaults: bool

repr_simd: bool

cfg_target_feature: bool

platform_intrinsics: bool

unwind_attributes: bool

naked_functions: bool

no_debug: bool

omit_gdb_pretty_printer_section: bool

cfg_target_vendor: bool

stmt_expr_attributes: bool

type_ascription: bool

cfg_target_thread_local: bool

abi_vectorcall: bool

inclusive_range_syntax: bool

exclusive_range_pattern: bool

specialization: bool

cfg_target_has_atomic: bool

conservative_impl_trait: bool

universal_impl_trait: bool

never_type: bool

attr_literals: bool

untagged_unions: bool

compiler_builtins: bool

generic_param_attrs: bool

link_cfg: bool

use_extern_macros: bool

target_feature: bool

abi_ptx: bool

i128_type: bool

repr128: bool

abi_unadjusted: bool

proc_macro: bool

decl_macro: bool

static_nobundle: bool

abi_msp430_interrupt: bool

sanitizer_runtime: bool

profiler_runtime: bool

abi_x86_interrupt: bool

catch_expr: bool

used: bool

global_asm: bool

overlapping_marker_traits: bool

macro_vis_matcher: bool

abi_thiscall: bool

allow_fail: bool

unsized_tuple_coercion: bool

generators: bool

trait_alias: bool

global_allocator: bool

allocator_internals: bool

doc_cfg: bool

doc_masked: bool

doc_spotlight: bool

external_doc: bool

fn_must_use: bool

non_exhaustive: bool

clone_closures: bool

copy_closures: bool

underscore_lifetimes: bool

dotdoteq_in_patterns: bool

match_default_bindings: bool

dyn_trait: bool

crate_visibility_modifier: bool

extern_types: bool

arbitrary_self_types: bool

crate_in_paths: bool

in_band_lifetimes: bool

generic_associated_types: bool

extern_absolute_paths: bool

non_modrs_mods: bool

termination_trait: bool

macro_lifetime_matcher: bool

extern_in_paths: bool

repr_transparent: bool

macro_at_most_once_rep: bool

if_while_or_patterns: bool

pattern_parentheses: bool

Methods

impl Features

pub fn new() -> Features

pub fn walk_feature_fields<F>(&self, f: F) where
    F: FnMut(&str, bool), 

Trait Implementations

impl Clone for Features

fn clone(&self) -> Features

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.