Enum ra_ap_hir_ty::DomainGoal

pub enum DomainGoal {
    Holds(WhereClause),
}

Something that needs to be proven (by Chalk) during type checking, e.g. that a certain type implements a certain trait. Proving the Obligation might result in additional information about inference variables.

Variants

Holds(WhereClause)

Trait Implementations

impl CastTo<DomainGoal> for WhereClause

fn cast_to(self, _interner: &Interner) -> DomainGoal

Cast a value to type T.

impl CastTo<DomainGoal> for TraitRef

fn cast_to(self, interner: &Interner) -> DomainGoal

Cast a value to type T.

impl CastTo<DomainGoal> for AliasEq

fn cast_to(self, interner: &Interner) -> DomainGoal

Cast a value to type T.

impl Clone for DomainGoal

fn clone(&self) -> DomainGoal

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DomainGoal

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for DomainGoal

impl HasInterner for DomainGoal

type Interner = Interner

The interner associated with the type.

impl Hash for DomainGoal

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl HirDisplay for DomainGoal

fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError>

fn into_displayable<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    max_size: Option<usize>,
    omit_verbose_types: bool,
    display_target: DisplayTarget
) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable.

fn display<'a>(&'a self, db: &'a dyn HirDatabase) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable. Use this for showing types to the user (e.g. diagnostics)

fn display_truncated<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    max_size: Option<usize>
) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable and tries to be succinct. Use this for showing types to the user where space is constrained (e.g. doc popups)

fn display_source_code<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    module_id: ModuleId
) -> Result<String, DisplaySourceCodeError>

Returns a String representation of self that can be inserted into the given module. Use this when generating code (e.g. assists)

fn display_test<'a>(
    &'a self,
    db: &'a dyn HirDatabase
) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a String representation of self for test purposes

impl PartialEq<DomainGoal> for DomainGoal

fn eq(&self, other: &DomainGoal) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &DomainGoal) -> bool

This method tests for !=.

impl StructuralEq for DomainGoal

impl StructuralPartialEq for DomainGoal