Struct LexOptions 

pub struct LexOptions {
    pub standard: Standard,
    pub gating: Gating,
    pub dollar_in_identifiers: bool,
    pub trigraphs: bool,
    pub wchar_bits: u32,
    pub complex: bool,
}

Knobs for the lexer.

Fields

standard: Standard

Which standard’s lexical rules to apply.

gating: Gating

How a constant form a newer revision introduced is gated.

dollar_in_identifiers: bool

Accept $ in identifiers, like GCC’s -fdollars-in-identifiers, which is on by default; see crate::Options::dollar_in_identifiers.

trigraphs: bool

Whether translation phase 1 replaces the nine trigraphs.

See trigraphs_enabled for who has them and why.

wchar_bits: u32

How wide the target’s wchar_t is.

The one target property the lexer has an opinion about: it decides what an L'\xffff' escape may hold and whether L"😀" is one element or a surrogate pair, since Windows makes wchar_t 16 bits.

complex: bool

Whether the complex types are available, which is what decides whether an imaginary constant (2.0i) has a type; see crate::Options::complex.

Implementations

impl LexOptions

pub fn new(standard: Standard) -> Self

The lexical rules of standard, in the strict ISO dialect.

Trait Implementations

impl Clone for LexOptions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LexOptions

impl Debug for LexOptions

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

Formats the value using the given formatter.

impl From<&Options> for LexOptions

fn from(o: &Options) -> Self

Converts to this type from the input type.