rustc_ast_pretty::pp

Struct Printer

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pub struct Printer {
    out: String,
    space: isize,
    buf: RingBuffer<BufEntry>,
    left_total: isize,
    right_total: isize,
    scan_stack: VecDeque<usize>,
    print_stack: Vec<PrintFrame>,
    indent: usize,
    pending_indentation: isize,
    last_printed: Option<Token>,
}

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§out: String§space: isize

Number of spaces left on line

§buf: RingBuffer<BufEntry>

Ring-buffer of tokens and calculated sizes

§left_total: isize

Running size of stream “…left”

§right_total: isize

Running size of stream “…right”

§scan_stack: VecDeque<usize>

Pseudo-stack, really a ring too. Holds the primary-ring-buffers index of the Begin that started the current block, possibly with the most recent Break after that Begin (if there is any) on top of it. Stuff is flushed off the bottom as it becomes irrelevant due to the primary ring-buffer advancing.

§print_stack: Vec<PrintFrame>

Stack of blocks-in-progress being flushed by print

§indent: usize

Level of indentation of current line

§pending_indentation: isize

Buffered indentation to avoid writing trailing whitespace

§last_printed: Option<Token>

The token most recently popped from the left boundary of the ring-buffer for printing

Implementations§

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impl Printer

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pub fn word_space<W: Into<Cow<'static, str>>>(&mut self, w: W)

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pub fn popen(&mut self)

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pub fn pclose(&mut self)

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pub fn hardbreak_if_not_bol(&mut self)

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pub fn space_if_not_bol(&mut self)

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pub fn nbsp(&mut self)

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pub fn word_nbsp<S: Into<Cow<'static, str>>>(&mut self, w: S)

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pub fn synth_comment(&mut self, text: impl Into<Cow<'static, str>>)

Synthesizes a comment that was not textually present in the original source file.

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impl Printer

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pub fn rbox(&mut self, indent: isize, breaks: Breaks)

“raw box”

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pub fn ibox(&mut self, indent: isize)

Inconsistent breaking box

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pub fn cbox(&mut self, indent: isize)

Consistent breaking box

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pub fn visual_align(&mut self)

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pub fn break_offset(&mut self, n: usize, off: isize)

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pub fn end(&mut self)

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pub fn eof(self) -> String

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pub fn word<S: Into<Cow<'static, str>>>(&mut self, wrd: S)

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fn spaces(&mut self, n: usize)

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pub fn zerobreak(&mut self)

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pub fn space(&mut self)

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pub fn hardbreak(&mut self)

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pub fn is_beginning_of_line(&self) -> bool

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pub(crate) fn hardbreak_tok_offset(off: isize) -> Token

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pub fn trailing_comma(&mut self)

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pub fn trailing_comma_or_space(&mut self)

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impl Printer

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pub fn new() -> Self

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pub(crate) fn last_token(&self) -> Option<&Token>

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pub(crate) fn last_token_still_buffered(&self) -> Option<&Token>

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pub(crate) fn replace_last_token_still_buffered(&mut self, token: Token)

Be very careful with this!

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fn scan_eof(&mut self)

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fn scan_begin(&mut self, token: BeginToken)

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fn scan_end(&mut self)

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fn scan_break(&mut self, token: BreakToken)

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fn scan_string(&mut self, string: Cow<'static, str>)

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pub(crate) fn offset(&mut self, offset: isize)

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fn check_stream(&mut self)

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fn advance_left(&mut self)

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fn check_stack(&mut self, depth: usize)

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fn get_top(&self) -> PrintFrame

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fn print_begin(&mut self, token: BeginToken, size: isize)

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fn print_end(&mut self)

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fn print_break(&mut self, token: BreakToken, size: isize)

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fn print_string(&mut self, string: &str)

Auto Trait Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

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type Error = Infallible

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

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 192 bytes