Enum ExpressionError

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pub enum ExpressionError {
Show 21 variants UnsupportedOperator(String), CanNotExec(Operator), StartWithNonValueOperator, UnpairedBrackets, DuplicateValueNode, DuplicateOperatorNode, CommaNotWithFunction, BracketNotWithFunction, FunctionNotExists(String), ExpectedBoolean(Value), ExpectedIdentifier, ExpectedArray, ExpectedObject, ExpectedNumber, NoFinalNode, ArgumentsGreater(usize), ArgumentsLess(usize), UnsupportedTypes(String, String), InvalidRange(String), CanNotAddChild, Custom(String),
}
Expand description

Expression parsing error

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UnsupportedOperator(String)

Unsupported operator yet.

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CanNotExec(Operator)

This operator does not support execution.

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StartWithNonValueOperator

Your expression may start with non-value operator like ( + * )

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UnpairedBrackets

Unpaired brackets, left brackets count does not equal right brackets count

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DuplicateValueNode

Duplicate values node, you may have (2 3) but there is no operators between them

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DuplicateOperatorNode

Duplicate operators node, you may have (+ +) but there is no values between them

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CommaNotWithFunction

You have a comma(,) , but there is no function in front of it.

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BracketNotWithFunction

You have empty brackets () , but there is no function in front of it.

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FunctionNotExists(String)

Function not exists.

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ExpectedBoolean(Value)

Expected a boolean but the given value isn’t.

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ExpectedIdentifier

Expected ident.

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ExpectedArray

Expected array.

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ExpectedObject

Expected object.

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ExpectedNumber

Expect number.

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NoFinalNode

Failed to parse, no final expression.

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ArgumentsGreater(usize)

The number of arguments is greater than the maximum limit.

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ArgumentsLess(usize)

The number of arguments is less than the minimum limit.

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UnsupportedTypes(String, String)

This two value types are different or do not support mathematical calculations.

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InvalidRange(String)

Invalid range expression like 1..2..3

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CanNotAddChild

Can not add child node.

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Custom(String)

Custom error.

Trait Implementations§

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impl Debug for Error

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

Formats the value using the given formatter. Read more
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impl Display for Error

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

Formats the value using the given formatter. Read more
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impl Error for Error

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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
1.30.0 · Source§

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
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fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type-based access to context intended for error reports. Read more
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impl From<Error> for Error

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fn from(error: ExpressionError) -> Error

Converts to this type from the input type.
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impl PartialEq for Error

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fn eq(&self, other: &Error) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for Error

Auto Trait Implementations§

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impl Freeze for Error

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impl RefUnwindSafe for Error

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impl Send for Error

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impl Sync for Error

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impl Unpin for Error

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impl UnwindSafe for Error

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<U> 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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.