Enum ForHead 

pub enum ForHead {
    VarDecl(Box<VarDecl>),
    UsingDecl(Box<UsingDecl>),
    Pat(Box<Pat>),
}

A head for for-in and for-of loop.

Variants

VarDecl(Box<VarDecl>)

UsingDecl(Box<UsingDecl>)

Pat(Box<Pat>)

Implementations

impl ForHead

pub const fn is_var_decl(&self) -> bool

Returns true if self is of variant VarDecl.

pub fn as_var_decl(&self) -> Option<&Box<VarDecl>>

Returns Some if self is a reference of variant VarDecl, and None otherwise.

pub fn as_mut_var_decl(&mut self) -> Option<&mut Box<VarDecl>>

Returns Some if self is a mutable reference of variant VarDecl, and None otherwise.

pub fn expect_var_decl(self) -> Box<VarDecl>

where Self: Debug,

Unwraps the value, yielding the content of VarDecl.

Panics

Panics if the value is not VarDecl. In debug builds the panic message includes the content of self.

pub fn var_decl(self) -> Option<Box<VarDecl>>

Returns Some if self is of variant VarDecl, and None otherwise.

pub const fn is_using_decl(&self) -> bool

Returns true if self is of variant UsingDecl.

pub fn as_using_decl(&self) -> Option<&Box<UsingDecl>>

Returns Some if self is a reference of variant UsingDecl, and None otherwise.

pub fn as_mut_using_decl(&mut self) -> Option<&mut Box<UsingDecl>>

Returns Some if self is a mutable reference of variant UsingDecl, and None otherwise.

pub fn expect_using_decl(self) -> Box<UsingDecl>

where Self: Debug,

Unwraps the value, yielding the content of UsingDecl.

Panics

Panics if the value is not UsingDecl. In debug builds the panic message includes the content of self.

pub fn using_decl(self) -> Option<Box<UsingDecl>>

Returns Some if self is of variant UsingDecl, and None otherwise.

pub const fn is_pat(&self) -> bool

Returns true if self is of variant Pat.

pub fn as_pat(&self) -> Option<&Box<Pat>>

Returns Some if self is a reference of variant Pat, and None otherwise.

pub fn as_mut_pat(&mut self) -> Option<&mut Box<Pat>>

Returns Some if self is a mutable reference of variant Pat, and None otherwise.

pub fn expect_pat(self) -> Box<Pat>

where Self: Debug,

Unwraps the value, yielding the content of Pat.

Panics

Panics if the value is not Pat. In debug builds the panic message includes the content of self.

pub fn pat(self) -> Option<Box<Pat>>

Returns Some if self is of variant Pat, and None otherwise.

Trait Implementations

impl Clone for ForHead

fn clone(&self) -> ForHead

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForHead

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

Formats the value using the given formatter.

impl Default for ForHead

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ForHead

Available on crate feature serde-impl only.

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ForHead

impl EqIgnoreSpan for ForHead

fn eq_ignore_span(&self, other: &Self) -> bool

impl From<Box<Pat>> for ForHead

fn from(v: Box<Pat>) -> Self

Converts to this type from the input type.

impl From<Box<UsingDecl>> for ForHead

fn from(v: Box<UsingDecl>) -> Self

Converts to this type from the input type.

impl From<Box<VarDecl>> for ForHead

fn from(v: Box<VarDecl>) -> Self

Converts to this type from the input type.

impl From<Pat> for ForHead

fn from(src: Pat) -> ForHead

Converts to this type from the input type.

impl From<VarDecl> for ForHead

fn from(src: VarDecl) -> ForHead

Converts to this type from the input type.

impl Hash for ForHead

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ForHead

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ForHead

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Spanned for ForHead

fn span(&self) -> Span

Get span of self.

fn span_lo(&self) -> BytePos

fn span_hi(&self) -> BytePos

impl StructuralPartialEq for ForHead

impl Take for ForHead

fn dummy() -> Self

Create a dummy value of this type.

fn take(&mut self) -> Self

fn map_with_mut<F>(&mut self, op: F)

where F: FnOnce(Self) -> Self,

Mutate self using op, which accepts owned data.