Struct DataShape

pub struct DataShape {
    prefix: &'static str,
    newtype: bool,
    named: bool,
    tuple: bool,
    unit: bool,
    any: bool,
}

Receiver for shape information within a struct or enum context. See Shape for more information on valid uses of shape validation.

Fields

prefix: &'static str

The kind of shape being described. This can be struct_ or enum_.

newtype: bool

named: bool

tuple: bool

unit: bool

any: bool

Implementations

impl DataShape

fn new(prefix: &'static str) -> Self

fn set_word(&mut self, word: &str) -> Result<()>

Trait Implementations

impl Clone for DataShape

fn clone(&self) -> DataShape

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DataShape

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

Formats the value using the given formatter.

impl Default for DataShape

fn default() -> DataShape

Returns the “default value” for a type.

impl FromMeta for DataShape

fn from_list(items: &[NestedMeta]) -> Result<Self>

Create an instance from a list of nested meta items.

fn from_nested_meta(item: &NestedMeta) -> Result<Self>

fn from_meta(item: &Meta) -> Result<Self>

Create an instance from a syn::Meta by dispatching to the format-appropriate trait function. This generally should not be overridden by implementers.

fn from_none() -> Option<Self>

When a field is omitted from a parent meta-item, from_none is used to attempt recovery before a missing field error is generated.

fn from_word() -> Result<Self>

Create an instance from the presence of the word in the attribute with no additional options specified.

fn from_value(value: &Lit) -> Result<Self>

Create an instance from a literal value of either foo = "bar" or foo("bar"). This dispatches to the appropriate method based on the type of literal encountered, and generally should not be overridden by implementers.

fn from_expr(expr: &Expr) -> Result<Self>

fn from_char(value: char) -> Result<Self>

Create an instance from a char literal in a value position.

fn from_string(value: &str) -> Result<Self>

Create an instance from a string literal in a value position.

fn from_bool(value: bool) -> Result<Self>

Create an instance from a bool literal in a value position.

impl PartialEq for DataShape

fn eq(&self, other: &DataShape) -> 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 ToTokens for DataShape

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl Eq for DataShape

impl StructuralPartialEq for DataShape