Enum LowerAtom

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enum LowerAtom {
Show 13 variants
    StringLit(String),
    IntLit(i32),
    RealLit(f64),
    Bool(bool),
    Null,
    Na,
    NaInteger,
    NaReal,
    NaCharacter,
    Inf,
    NaN,
    Symbol(String),
    Call(Box<LowerCall>),
}

Expand description

An atom that maps directly to an R SEXP constructor.

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StringLit(String)

"hello" — SEXP::scalar_string_from_str(…)

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IntLit(i32)

42L — SEXP::scalar_integer(…)

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RealLit(f64)

1.5, 1e3, or unsuffixed 42 (R parses unsuffixed numeric literals as double) — SEXP::scalar_real(…)

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Bool(bool)

TRUE / FALSE — SEXP::scalar_logical(…)

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Null

NULL — SEXP::nil()

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Na

Bare NA — logical NA (typeof(NA) is "logical" in R)

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NaInteger

NA_integer_ — SEXP::scalar_integer(i32::MIN)

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NaReal

NA_real_ — SEXP::scalar_real(NA_REAL)

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NaCharacter

NA_character_ — SEXP::scalar_string(SEXP::na_string())

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Inf

Inf — SEXP::scalar_real(f64::INFINITY)

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NaN

NaN — SEXP::scalar_real(f64::NAN)

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Symbol(String)

Bare identifier (symbol) — Rf_install at eval time via RSymbol

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Trait Implementations§

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impl Debug for LowerAtom

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl RefUnwindSafe for LowerAtom

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impl UnsafeUnpin for LowerAtom

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Blanket Implementations§

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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
where T: ?Sized,

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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default fn lower_bound(&self) -> usize

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

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

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default fn upper_bound(&self) -> Option<usize>

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

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

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final fn size_hint(&self) -> (usize, Option<usize>)

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

Returns an estimate for the number of elements this container like type contains. Read more

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