Enum ItemExpr 

pub enum ItemExpr {
    Value(String),
    ItemReference(ItemReference),
    Eq(BTreeSet<ItemExpr>),
    Ne(BTreeSet<ItemExpr>),
    Lt(BTreeSet<ItemExpr>),
    Gt(BTreeSet<ItemExpr>),
    Lte(BTreeSet<ItemExpr>),
    Gte(BTreeSet<ItemExpr>),
    And(BTreeSet<ItemExpr>),
    Or(BTreeSet<ItemExpr>),
    Sub(Box<ItemExpr>),
    Not(Box<ItemExpr>),
    Unresolved(String),
}

Wrapper around an expression, resolved into the macro values, and item references.

Variants

Value(String)

A value, typically the result of a resolved symbol to a macro

ItemReference(ItemReference)

An item reference, typically the result of a resolved symbol to an item reference.

Eq(BTreeSet<ItemExpr>)

An equals expression

Ne(BTreeSet<ItemExpr>)

A Not equals expression

Lt(BTreeSet<ItemExpr>)

A Lesser than expression

Gt(BTreeSet<ItemExpr>)

A Greater than expression

Lte(BTreeSet<ItemExpr>)

A Lesser than or equal expression

Gte(BTreeSet<ItemExpr>)

A Greater than or equal expression

And(BTreeSet<ItemExpr>)

An and expression

Or(BTreeSet<ItemExpr>)

An or expression

Sub(Box<ItemExpr>)

A subexpression, typically just parentheses surrounding the expression

Not(Box<ItemExpr>)

A negation expression

Unresolved(String)

Could not resolve value

Trait Implementations

impl Clone for ItemExpr

fn clone(&self) -> ItemExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ItemExpr

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

Formats the value using the given formatter.

impl Display for ItemExpr

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

Formats the value using the given formatter.

impl Hash for ItemExpr

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 Ord for ItemExpr

fn cmp(&self, other: &ItemExpr) -> 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 PartialEq for ItemExpr

fn eq(&self, other: &ItemExpr) -> 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 PartialOrd for ItemExpr

fn partial_cmp(&self, other: &ItemExpr) -> 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 Eq for ItemExpr

impl StructuralPartialEq for ItemExpr