rustc_typeck::middle::ty

Structs

AssociatedTypeAssociatedTypeInfoAutoDerefRefBareFnTyBinderClosureTyCommonTypesCrateAnalysisCtxtArenasDebruijnIndexEquatePredicateExistentialBoundsFloatVidFnSigFreeRegionFreevarGenericBoundsGenericsIntVidInternedTyItemSubstsItemVariancesMethodMethodCallMethodCalleeMethodObjectMethodParamOutlivesPredicateParamBoundsParamTyParameterEnvironmentProjectionPredicateProjectionTyRegionParameterDefRegionVidTraitDefTraitPredicateTraitRefTransmuteRestrictionTySTyTraitTyVidTypeContentsTypeFlagsTypeParameterDefTypeSchemeUnboxedClosureUnboxedClosureUpvarUpvarBorrowUpvarIdVariantInfocreader_cache_keyctxtexpected_foundfieldfield_tymtparam_index

Enums

AutoAdjustmentAutoRefBorrowKindBoundRegionBuiltinBoundCopyImplementationErrorDtorKindExplicitSelfCategoryExprAdjustmentExprKindFnOutputImplOrTraitItemImplOrTraitItemContainerImplOrTraitItemIdInferRegionInferTyIntVarValueMethodOriginPredicateRegionRepresentabilityTraitStoreUnboxedClosureKindUnsizeKindVarianceast_ty_to_ty_cache_entrystyterr_vstore_kindtype_errvtable_origin

Traits

AsPredicateHasProjectionTypesReferencesErrorRegionEscapeToPolyTraitRef

Functions

accumulate_lifetimes_in_typeadjust_is_objectadjust_tyadjust_ty_for_autorefadjusted_object_regionall_builtin_boundsanonymize_late_bound_regionsarray_element_tyassociated_type_parameter_indexbinds_late_bound_regionscan_type_implement_copyclose_typeconstruct_parameter_environmentcount_late_bound_regionsderefeach_attreach_bound_trait_and_supertraitsempty_builtin_boundsempty_parameter_environmentenum_is_univariantenum_variant_with_idenum_variantserase_late_bound_regionseval_repeat_countexpr_is_lvalexpr_kindexpr_spanexpr_tyexpr_ty_adjustedexpr_ty_optfield_idx_strictfn_is_variadicfold_tyfree_region_from_defget_tydesc_tyhas_attrhas_dtorhash_crate_independentimpl_of_methodimpl_or_trait_itemimpl_or_trait_item_idximpl_trait_refindexis_associated_typeis_binopableis_ffi_safeis_fn_tyis_instantiableis_tuple_structis_type_representableitem_path_stritem_variancesliberate_late_bound_regionslocal_var_name_strlookup_field_typelookup_item_typelookup_packedlookup_repr_hintslookup_simdlookup_struct_fieldslookup_trait_defmake_substs_for_receiver_typesmaybe_walk_tymk_bare_fnmk_closuremk_ctor_fnmk_ctxtmk_enummk_float_varmk_imm_ptrmk_imm_rptrmk_infermk_int_varmk_mach_floatmk_mach_intmk_mach_uintmk_mut_ptrmk_mut_rptrmk_nilmk_nil_ptrmk_openmk_parammk_param_from_defmk_projectionmk_ptrmk_rptrmk_self_typemk_slicemk_strmk_str_slicemk_structmk_tmk_traitmk_tupmk_unboxed_closuremk_uniqmk_varmk_vecnamed_element_tynode_id_item_substsnode_id_to_trait_refnode_id_to_typenode_id_to_type_optnormalize_tynote_and_explain_type_errobject_region_boundspat_typopulate_implementations_for_trait_if_necessarypopulate_implementations_for_type_if_necessarypositional_element_typredicatespredicates_for_trait_refprovided_sourceprovided_trait_methodsrecord_trait_implementationregion_existential_boundreplace_late_bound_regionsrequired_region_boundsresolve_exprsequence_element_typesimd_sizesimd_typesort_bounds_liststmt_node_idstruct_fieldssubstd_enum_variantstrait_id_of_impltrait_itemtrait_item_def_idstrait_item_of_itemtrait_itemstrait_of_itemtrait_ref_contains_errortrait_ref_to_def_idtry_add_builtin_traittry_node_id_to_typetup_fieldsty_closure_storety_dtorty_fn_abity_fn_argsty_fn_retty_fn_sigty_regionty_sort_stringty_to_def_idtype_contenttype_contentstype_err_to_strtype_escapes_depthtype_has_escaping_regionstype_has_late_bound_regionstype_has_paramstype_has_projectiontype_has_selftype_has_ty_infertype_interior_is_unsafetype_is_bare_fntype_is_bare_fn_itemtype_is_booltype_is_c_like_enumtype_is_chartype_is_emptytype_is_errortype_is_floating_pointtype_is_fptype_is_freshtype_is_integraltype_is_machinetype_is_niltype_is_numerictype_is_region_ptrtype_is_scalartype_is_selftype_is_signedtype_is_simdtype_is_sizedtype_is_structuraltype_is_traittype_is_ty_vartype_is_uinttype_is_uniquetype_is_unsafe_ptrtype_is_vectype_moves_by_defaulttype_needs_infertype_needs_substtype_of_adjusttype_trait_infounboxed_closure_upvarsunopen_typeunsize_tywalk_tywith_freevarswith_path

Function rustc_typeck::middle::ty::positional_element_tyExperimental [-]  [+] [src]

pub fn positional_element_ty(cx: &ctxt<'tcx>, ty: &'tcx TyS<'tcx>, i: uint, variant: Option<DefId>) -> Option<&'tcx TyS<'tcx>>

Returns the type of element at index i in tuple or tuple-like type t. For an enum t, variant is None only if t is a univariant enum.