Struct Function

pub struct Function<FT, T>
where
    FT: Into<Function>,
{
    pub name: Function,
    pub parameters: T,
    pub close: Option<RightParen>,
    /* private fields */
}

This struct provides the generic function() grammar that parses a function block where the interior function parameters are <T> and the function name is <FT>. The grammar is:

<function>
 │├─ <FT> ─ <T> ─ ")" ─┤│

<AT> must implement Peek, Parse, and Into<token_macros::Function>. This helps enforce that this is a function, that the first token has to be a specific function token.

<T> - the interior parameters - must implement Parse, ToCursors, and ToSpan.

To specify extra restrictions on the value of the function, use function_set.

Example

use css_parse::*;

/// A grammar like `test(foo)`
#[derive(Debug)]
pub struct TestFunction(Function<T![Function], T![Ident]>);

impl<'a> Parse<'a> for TestFunction {
    fn parse(p: &mut Parser<'a>) -> Result<Self> {
        p.parse::<Function<T![Function], T![Ident]>>().map(Self)
    }
}

impl ToCursors for TestFunction {
    fn to_cursors(&self, s: &mut impl CursorSink) {
        self.0.to_cursors(s);
    }
}

assert_parse!(TestFunction, "test(foo)");

Fields

name: Function

parameters: T

close: Option<RightParen>

Trait Implementations

impl<FT, T: Clone> Clone for Function<FT, T>

where FT: Into<Function> + Clone,

fn clone(&self) -> Function<FT, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<FT, T: Debug> Debug for Function<FT, T>

where FT: Into<Function> + Debug,

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

Formats the value using the given formatter.

impl<FT, T: Hash> Hash for Function<FT, T>

where FT: Into<Function> + Hash,

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<FT, T: Ord> Ord for Function<FT, T>

where FT: Into<Function> + Ord,

fn cmp(&self, other: &Function<FT, T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a, FT, T> Parse<'a> for Function<FT, T>

where FT: Parse<'a> + Into<Function>, T: Parse<'a>,

fn parse(p: &mut Parser<'a>) -> ParserResult<Self>

fn try_parse(p: &mut Parser<'a>) -> Result<Self>

impl<FT, T: PartialEq> PartialEq for Function<FT, T>

where FT: Into<Function> + PartialEq,

fn eq(&self, other: &Function<FT, T>) -> 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<FT, T: PartialOrd> PartialOrd for Function<FT, T>

where FT: Into<Function> + PartialOrd,

fn partial_cmp(&self, other: &Function<FT, T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, FT, T> Peek<'a> for Function<FT, T>

where FT: Peek<'a> + Into<Function>,

fn peek(p: &Parser<'a>, c: Cursor) -> bool

const PEEK_KINDSET: KindSet = KindSet::ANY

impl<FT, T> Serialize for Function<FT, T>

where FT: Into<Function>, T: Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<FT, T> ToCursors for Function<FT, T>

where FT: Into<Function>, T: ToCursors,

fn to_cursors(&self, s: &mut impl CursorSink)

impl<FT, T> ToSpan for Function<FT, T>

where FT: Into<Function>, T: ToSpan,

fn to_span(&self) -> Span

impl<FT, T: Eq> Eq for Function<FT, T>

where FT: Into<Function> + Eq,

impl<FT, T> StructuralPartialEq for Function<FT, T>

where FT: Into<Function>,