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 simd: 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 allow_internal_unstable: bool,
    pub allow_internal_unsafe: bool,
    pub slice_patterns: bool,
    pub const_fn: bool,
    pub const_indexing: 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 repr_align: 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 match_beginning_vert: 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 wasm_import_memory: bool,
    pub crate_in_paths: bool,
    pub in_band_lifetimes: bool,
    pub use_nested_groups: bool,
    pub generic_associated_types: bool,
    pub extern_absolute_paths: bool,
}

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A set of features to be used by later passes.

Fields

declared_stable_lang_features: Vec<(Symbol, Span)>

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

declared_lib_features: Vec<(Symbol, Span)>

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

asm: bool

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concat_idents: bool

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link_args: bool

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log_syntax: bool

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non_ascii_idents: bool

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plugin_registrar: bool

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thread_local: bool

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trace_macros: bool

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intrinsics: bool

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lang_items: bool

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link_llvm_intrinsics: bool

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linkage: bool

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quote: bool

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simd: bool

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rustc_diagnostic_macros: bool

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rustc_const_unstable: bool

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advanced_slice_patterns: bool

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box_syntax: bool

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placement_in_syntax: bool

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unboxed_closures: bool

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fundamental: bool

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main: bool

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needs_allocator: bool

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on_unimplemented: bool

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plugin: bool

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simd_ffi: bool

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start: bool

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structural_match: bool

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panic_runtime: bool

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needs_panic_runtime: bool

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optin_builtin_traits: bool

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macro_reexport: bool

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staged_api: bool

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no_core: bool

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box_patterns: bool

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dropck_parametricity: bool

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dropck_eyepatch: bool

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custom_attribute: bool

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custom_derive: bool

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rustc_attrs: bool

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allow_internal_unstable: bool

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allow_internal_unsafe: bool

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slice_patterns: bool

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const_fn: bool

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const_indexing: bool

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prelude_import: bool

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default_type_parameter_fallback: bool

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associated_type_defaults: bool

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repr_simd: bool

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cfg_target_feature: bool

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platform_intrinsics: bool

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unwind_attributes: bool

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naked_functions: bool

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no_debug: bool

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omit_gdb_pretty_printer_section: bool

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cfg_target_vendor: bool

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stmt_expr_attributes: bool

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type_ascription: bool

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cfg_target_thread_local: bool

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abi_vectorcall: bool

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inclusive_range_syntax: bool

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exclusive_range_pattern: bool

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specialization: bool

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cfg_target_has_atomic: bool

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conservative_impl_trait: bool

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universal_impl_trait: bool

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never_type: bool

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attr_literals: bool

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untagged_unions: bool

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compiler_builtins: bool

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generic_param_attrs: bool

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link_cfg: bool

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use_extern_macros: bool

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target_feature: bool

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abi_ptx: bool

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i128_type: bool

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repr128: bool

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abi_unadjusted: bool

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proc_macro: bool

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decl_macro: bool

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static_nobundle: bool

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abi_msp430_interrupt: bool

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sanitizer_runtime: bool

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profiler_runtime: bool

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abi_x86_interrupt: bool

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catch_expr: bool

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repr_align: bool

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used: bool

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global_asm: bool

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overlapping_marker_traits: bool

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macro_vis_matcher: bool

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abi_thiscall: bool

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allow_fail: bool

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unsized_tuple_coercion: bool

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generators: bool

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trait_alias: bool

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global_allocator: bool

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allocator_internals: bool

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doc_cfg: bool

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doc_masked: bool

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doc_spotlight: bool

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external_doc: bool

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fn_must_use: bool

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match_beginning_vert: bool

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non_exhaustive: bool

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clone_closures: bool

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copy_closures: bool

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underscore_lifetimes: bool

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dotdoteq_in_patterns: bool

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match_default_bindings: bool

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dyn_trait: bool

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crate_visibility_modifier: bool

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extern_types: bool

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arbitrary_self_types: bool

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wasm_import_memory: bool

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crate_in_paths: bool

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in_band_lifetimes: bool

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use_nested_groups: bool

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generic_associated_types: bool

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extern_absolute_paths: bool

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Methods

impl Features

pub fn new() -> Features

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