[−]Enum eval::Error

[+] Show declaration

pub enum Error {
    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),
}

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Expression parsing error

Variants

UnsupportedOperator(String)

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Unsupported operator yet.

CanNotExec(Operator)

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This operator does not support execution.

StartWithNonValueOperator

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

UnpairedBrackets

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

DuplicateValueNode

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

DuplicateOperatorNode

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

CommaNotWithFunction

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

BracketNotWithFunction

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

FunctionNotExists(String)

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Function not exists.

ExpectedBoolean(Value)

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Expected a boolean but the given value isn't.

ExpectedIdentifier

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Expected ident.

ExpectedArray

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Expected array.

ExpectedObject

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Expected object.

ExpectedNumber

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Expect number.

NoFinalNode

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Failed to parse, no final expression.

ArgumentsGreater(usize)

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The number of arguments is greater than the maximum limit.

ArgumentsLess(usize)

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The number of arguments is less than the minimum limit.

UnsupportedTypes(String, String)

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

InvalidRange(String)

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Invalid range expression like 1..2..3

CanNotAddChild

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Can not add child node.

Custom(String)

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Custom error.

Trait Implementations

`impl PartialEq<Error> for Error`
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`fn eq(&self, other: &Error) -> bool`
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This method tests for self and other values to be equal, and is used by ==. Read more

`fn ne(&self, other: &Error) -> bool`
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This method tests for !=.

`impl Display for Error`
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`fn fmt(&self, fmt: &mut Formatter) -> Result`
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Formats the value using the given formatter. Read more

`impl Debug for Error`
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`fn fmt(&self, f: &mut Formatter) -> Result`
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Formats the value using the given formatter. Read more

`impl Error for Error`
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`fn description(&self) -> &str`
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This method is soft-deprecated. Read more

`fn cause(&self) -> Option<&Error>`
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Deprecating in 1.33.0

: replaced by Error::source, which can support downcasting

The lower-level cause of this error, if any. Read more

`fn source(&self) -> Option<&(Error + 'static)>`
1.30.0
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The lower-level source of this error, if any. Read more

Auto Trait Implementations

`impl Send for Error`

`impl Sync for Error`

Blanket Implementations

`impl<T> ToString for T where T: Display + ?Sized,`
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`fn to_string(&self) -> String`
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Converts the given value to a String. Read more

`impl<T, U> Into for T where U: From<T>,`
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`fn into(self) -> U`
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Performs the conversion.

`impl<T> From for T`
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`fn from(t: T) -> T`
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Performs the conversion.

`impl<T, U> TryFrom for T where T: From<U>,`
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`type Error = !`

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

The type returned in the event of a conversion error.

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`
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🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

`impl<T> Borrow for T where T: ?Sized,`
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`fn borrow(&self) -> &T`
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Immutably borrows from an owned value. Read more

`impl<T, U> TryInto for T where U: TryFrom<T>,`
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`type Error = <U as TryFrom<T>>::Error`

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

The type returned in the event of a conversion error.

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`
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🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

`impl<T> BorrowMut for T where T: ?Sized,`
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`fn borrow_mut(&mut self) -> &mut T`
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Mutably borrows from an owned value. Read more

`impl<T> Any for T where T: 'static + ?Sized,`
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`fn get_type_id(&self) -> TypeId`
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🔬 This is a nightly-only experimental API. (get_type_id)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

[−]Enum eval::Error

Variants

Trait Implementations

impl PartialEq<Error> for Error[src][+]

fn eq(&self, other: &Error) -> bool[src][−]

fn ne(&self, other: &Error) -> bool[src][−]

impl Display for Error[+]

fn fmt(&self, fmt: &mut Formatter) -> Result[−]

impl Debug for Error[src][+]

fn fmt(&self, f: &mut Formatter) -> Result[src][−]

impl Error for Error[+]

fn description(&self) -> &str[−]

fn cause(&self) -> Option<&Error>[−]

fn source(&self) -> Option<&(Error + 'static)>1.30.0[src][−]

Auto Trait Implementations

impl Send for Error

impl Sync for Error

Blanket Implementations

impl<T> ToString for T where T: Display + ?Sized, [src][−]

fn to_string(&self) -> String[src][−]

impl<T, U> Into for T where U: From<T>, [src][−]

fn into(self) -> U[src][−]

impl<T> From for T[src][−]

fn from(t: T) -> T[src][−]

impl<T, U> TryFrom for T where T: From<U>, [src][−]

type Error = !

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src][−]

impl<T> Borrow for T where T: ?Sized, [src][−]

fn borrow(&self) -> &T[src][−]

impl<T, U> TryInto for T where U: TryFrom<T>, [src][−]

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src][−]

impl<T> BorrowMut for T where T: ?Sized, [src][−]

fn borrow_mut(&mut self) -> &mut T[src][−]

impl<T> Any for T where T: 'static + ?Sized, [src][−]

fn get_type_id(&self) -> TypeId[src][−]

`impl PartialEq<Error> for Error`
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`fn eq(&self, other: &Error) -> bool`
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`fn ne(&self, other: &Error) -> bool`
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`impl Display for Error`
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`fn fmt(&self, fmt: &mut Formatter) -> Result`
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`impl Debug for Error`
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`fn fmt(&self, f: &mut Formatter) -> Result`
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`impl Error for Error`
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`fn description(&self) -> &str`
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`fn cause(&self) -> Option<&Error>`
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`fn source(&self) -> Option<&(Error + 'static)>`
1.30.0
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`impl Send for Error`

`impl Sync for Error`

`impl<T> ToString for T where T: Display + ?Sized,`
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`fn to_string(&self) -> String`
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`impl<T, U> Into for T where U: From<T>,`
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`fn into(self) -> U`
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`impl<T> From for T`
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`fn from(t: T) -> T`
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`impl<T, U> TryFrom for T where T: From<U>,`
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`type Error = !`

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`
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`impl<T> Borrow for T where T: ?Sized,`
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`fn borrow(&self) -> &T`
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`impl<T, U> TryInto for T where U: TryFrom<T>,`
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`type Error = <U as TryFrom<T>>::Error`

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`
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`impl<T> BorrowMut for T where T: ?Sized,`
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`fn borrow_mut(&mut self) -> &mut T`
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`impl<T> Any for T where T: 'static + ?Sized,`
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`fn get_type_id(&self) -> TypeId`
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