devise::proc_macro2

Struct Literal

pub struct Literal { /* private fields */ }

Expand description

A literal string ("hello"), byte string (b"hello"), character ('a'), byte character (b'a'), an integer or floating point number with or without a suffix (1, 1u8, 2.3, 2.3f32).

Boolean literals like true and false do not belong here, they are Idents.

Implementations§

impl Literal

pub fn u8_suffixed(n: u8) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u16_suffixed(n: u16) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u32_suffixed(n: u32) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u64_suffixed(n: u64) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u128_suffixed(n: u128) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn usize_suffixed(n: usize) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i8_suffixed(n: i8) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i16_suffixed(n: i16) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i32_suffixed(n: i32) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i64_suffixed(n: i64) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i128_suffixed(n: i128) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn isize_suffixed(n: isize) -> Literal

Creates a new suffixed integer literal with the specified value.

This function will create an integer like 1u32 where the integer value specified is the first part of the token and the integral is also suffixed at the end. Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u8_unsuffixed(n: u8) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u16_unsuffixed(n: u16) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u32_unsuffixed(n: u32) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u64_unsuffixed(n: u64) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn u128_unsuffixed(n: u128) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn usize_unsuffixed(n: usize) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i8_unsuffixed(n: i8) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i16_unsuffixed(n: i16) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i32_unsuffixed(n: i32) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i64_unsuffixed(n: i64) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn i128_unsuffixed(n: i128) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn isize_unsuffixed(n: isize) -> Literal

Creates a new unsuffixed integer literal with the specified value.

This function will create an integer like 1 where the integer value specified is the first part of the token. No suffix is specified on this token, meaning that invocations like Literal::i8_unsuffixed(1) are equivalent to Literal::u32_unsuffixed(1). Literals created from negative numbers may not survive roundtrips through TokenStream or strings and may be broken into two tokens (- and positive literal).

Literals created through this method have the Span::call_site() span by default, which can be configured with the set_span method below.

pub fn f64_unsuffixed(f: f64) -> Literal

Creates a new unsuffixed floating-point literal.

This constructor is similar to those like Literal::i8_unsuffixed where the float’s value is emitted directly into the token but no suffix is used, so it may be inferred to be a f64 later in the compiler. Literals created from negative numbers may not survive round-trips through TokenStream or strings and may be broken into two tokens (- and positive literal).

§Panics

This function requires that the specified float is finite, for example if it is infinity or NaN this function will panic.

pub fn f64_suffixed(f: f64) -> Literal

Creates a new suffixed floating-point literal.

This constructor will create a literal like 1.0f64 where the value specified is the preceding part of the token and f64 is the suffix of the token. This token will always be inferred to be an f64 in the compiler. Literals created from negative numbers may not survive round-trips through TokenStream or strings and may be broken into two tokens (- and positive literal).

§Panics

This function requires that the specified float is finite, for example if it is infinity or NaN this function will panic.

pub fn f32_unsuffixed(f: f32) -> Literal

Creates a new unsuffixed floating-point literal.

This constructor is similar to those like Literal::i8_unsuffixed where the float’s value is emitted directly into the token but no suffix is used, so it may be inferred to be a f64 later in the compiler. Literals created from negative numbers may not survive round-trips through TokenStream or strings and may be broken into two tokens (- and positive literal).

§Panics

This function requires that the specified float is finite, for example if it is infinity or NaN this function will panic.

pub fn f32_suffixed(f: f32) -> Literal

Creates a new suffixed floating-point literal.

This constructor will create a literal like 1.0f32 where the value specified is the preceding part of the token and f32 is the suffix of the token. This token will always be inferred to be an f32 in the compiler. Literals created from negative numbers may not survive round-trips through TokenStream or strings and may be broken into two tokens (- and positive literal).

§Panics

This function requires that the specified float is finite, for example if it is infinity or NaN this function will panic.

pub fn string(string: &str) -> Literal

String literal.

pub fn character(ch: char) -> Literal

Character literal.

pub fn byte_character(byte: u8) -> Literal

Byte character literal.

pub fn byte_string(bytes: &[u8]) -> Literal

Byte string literal.

pub fn c_string(string: &CStr) -> Literal

C string literal.

pub fn span(&self) -> Span

Returns the span encompassing this literal.

pub fn set_span(&mut self, span: Span)

Configures the span associated for this literal.

pub fn subspan<R>(&self, range: R) -> Option<Span>
where R: RangeBounds<usize>,

Returns a Span that is a subset of self.span() containing only the source bytes in range range. Returns None if the would-be trimmed span is outside the bounds of self.

Warning: the underlying proc_macro::Literal::subspan method is nightly-only. When called from within a procedural macro not using a nightly compiler, this method will always return None.

Trait Implementations§

impl Clone for Literal

fn clone(&self) -> Literal

Returns a copy of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for Literal

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

Formats the value using the given formatter. Read more

impl Display for Literal

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

Formats the value using the given formatter. Read more

impl From<Literal> for LitFloat

fn from(token: Literal) -> LitFloat

Converts to this type from the input type.

impl From<Literal> for LitInt

fn from(token: Literal) -> LitInt

Converts to this type from the input type.

impl From<Literal> for TokenTree

fn from(g: Literal) -> TokenTree

Converts to this type from the input type.

impl FromStr for Literal

type Err = LexError

The associated error which can be returned from parsing.

fn from_str(repr: &str) -> Result<Literal, LexError>

Parses a string s to return a value of this type. Read more

impl Parse for Literal

fn parse(input: &ParseBuffer<'_>) -> Result<Literal, Error>

impl ToTokens for Literal

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

Write self to the given TokenStream. Read more

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

fn into_token_stream(self) -> TokenStream
where Self: Sized,

Convert self directly into a TokenStream object. Read more

impl Token for Literal

Auto Trait Implementations§

impl Freeze for Literal

impl RefUnwindSafe for Literal

impl !Send for Literal

impl !Sync for Literal

impl Unpin for Literal

impl UnwindSafe for Literal

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AstItemExt for T
where T: ToTokens,

fn respanned(&self, span: Span) -> T
where T: Parse,

fn respanned_tokens(&self, span: Span) -> TokenStream

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Paint for T
where T: ?Sized,

fn fg(&self, value: Color) -> Painted<&T>

Returns a styled value derived from self with the foreground set to value.

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Returns self with the fg() set to Color::Primary.

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Returns self with the fg() set to Color::Fixed.

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Returns self with the fg() set to Color::Rgb.

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Returns self with the fg() set to Color::Black.

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Returns self with the fg() set to Color::Red.

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Returns self with the fg() set to Color::Green.

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Returns self with the fg() set to Color::Yellow.

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Returns self with the fg() set to Color::Blue.

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Returns self with the fg() set to Color::Magenta.

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Returns self with the fg() set to Color::Cyan.

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Returns self with the fg() set to Color::White.

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Returns self with the fg() set to Color::BrightBlack.

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Returns self with the fg() set to Color::BrightRed.

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Returns self with the fg() set to Color::BrightGreen.

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Returns self with the fg() set to Color::BrightYellow.

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Returns self with the fg() set to Color::BrightBlue.

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Returns self with the fg() set to Color::BrightMagenta.

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Returns self with the fg() set to Color::BrightCyan.

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Returns self with the fg() set to Color::BrightWhite.

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Returns a styled value derived from self with the background set to value.

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fn on_primary(&self) -> Painted<&T>

Returns self with the bg() set to Color::Primary.

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fn on_fixed(&self, color: u8) -> Painted<&T>

Returns self with the bg() set to Color::Fixed.

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fn on_rgb(&self, r: u8, g: u8, b: u8) -> Painted<&T>

Returns self with the bg() set to Color::Rgb.

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Returns self with the bg() set to Color::Black.

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Returns self with the bg() set to Color::Red.

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Returns self with the bg() set to Color::Green.

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Returns self with the bg() set to Color::Yellow.

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Returns self with the bg() set to Color::Blue.

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fn on_magenta(&self) -> Painted<&T>

Returns self with the bg() set to Color::Magenta.

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fn on_cyan(&self) -> Painted<&T>

Returns self with the bg() set to Color::Cyan.

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Returns self with the bg() set to Color::White.

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Returns self with the bg() set to Color::BrightBlack.

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Returns self with the bg() set to Color::BrightRed.

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Returns self with the bg() set to Color::BrightGreen.

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Returns self with the bg() set to Color::BrightYellow.

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Returns self with the bg() set to Color::BrightBlue.

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fn on_bright_magenta(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightMagenta.

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fn on_bright_cyan(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightCyan.

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fn on_bright_white(&self) -> Painted<&T>

Returns self with the bg() set to Color::BrightWhite.

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fn attr(&self, value: Attribute) -> Painted<&T>

Enables the styling Attribute value.

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Returns self with the attr() set to Attribute::RapidBlink.

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Returns self with the attr() set to Attribute::Invert.

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fn quirk(&self, value: Quirk) -> Painted<&T>

Enables the yansi Quirk value.

This method should be used rarely. Instead, prefer to use quirk-specific builder methods like mask() and wrap(), which have the same functionality but are pithier.

§Example

Enable wrapping using .quirk():

use yansi::{Paint, Quirk};

painted.quirk(Quirk::Wrap);

Enable wrapping using wrap().

use yansi::Paint;

painted.wrap();

fn mask(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Mask.

§Example

println!("{}", value.mask());

fn wrap(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Wrap.

§Example

println!("{}", value.wrap());

fn linger(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Linger.

§Example

println!("{}", value.linger());

fn clear(&self) -> Painted<&T>

👎Deprecated since 1.0.1: renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

Returns self with the quirk() set to Quirk::Clear.

§Example

println!("{}", value.clear());

fn resetting(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Resetting.

§Example

println!("{}", value.resetting());

fn bright(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::Bright.

§Example

println!("{}", value.bright());

fn on_bright(&self) -> Painted<&T>

Returns self with the quirk() set to Quirk::OnBright.

§Example

println!("{}", value.on_bright());

fn whenever(&self, value: Condition) -> Painted<&T>

Conditionally enable styling based on whether the Condition value applies. Replaces any previous condition.

See the crate level docs for more details.

§Example

Enable styling painted only when both stdout and stderr are TTYs:

use yansi::{Paint, Condition};

painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);

fn new(self) -> Painted<Self>
where Self: Sized,

Create a new Painted with a default Style. Read more

fn paint<S>(&self, style: S) -> Painted<&Self>
where S: Into<Style>,

Apply a style wholesale to self. Any previous style is replaced. Read more

impl<T> Spanned for T
where T: Spanned + ?Sized,

fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T
where T: Display + ?Sized,

fn to_string(&self) -> String

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.