Enum nu_errors::ArgumentError

pub enum ArgumentError {
    MissingMandatoryFlag(String),
    MissingMandatoryPositional(String),
    MissingValueForName(String),
    UnexpectedArgument(Spanned<String>),
    UnexpectedFlag(Spanned<String>),
    InvalidExternalWord,
    BadValue(String),
}

ArgumentError describes various ways that the parser could fail because of unexpected arguments. Nu commands are like a combination of functions and macros, and these errors correspond to problems that could be identified during expansion based on the syntactic signature of a command.

Variants

MissingMandatoryFlag(String)

The command specified a mandatory flag, but it was missing.

MissingMandatoryPositional(String)

The command specified a mandatory positional argument, but it was missing.

MissingValueForName(String)

A flag was found, and it should have been followed by a value, but no value was found

UnexpectedArgument(Spanned<String>)

An argument was found, but the command does not recognize it

UnexpectedFlag(Spanned<String>)

An flag was found, but the command does not recognize it

InvalidExternalWord

A sequence of characters was found that was not syntactically valid (but would have been valid if the command was an external command)

BadValue(String)

A bad value in this location

Trait Implementations

impl Clone for ArgumentError

fn clone(&self) -> ArgumentError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ArgumentError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ArgumentError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Hash for ArgumentError

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for ArgumentError

fn cmp(&self, other: &ArgumentError) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<ArgumentError> for ArgumentError

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<ArgumentError> for ArgumentError

fn partial_cmp(&self, other: &ArgumentError) -> Option<Ordering>

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl PrettyDebug for ArgumentError

fn pretty(&self) -> DebugDocBuilder

fn to_doc(&self) -> DebugDoc

fn pretty_doc(
    &self
) -> Doc<'static, BoxDoc<'static, ShellAnnotation>, ShellAnnotation>

fn pretty_builder(&self) -> DocBuilder<'static, BoxAllocator, ShellAnnotation>

fn display(&self) -> String

A convenience method that prints out the document without colors in 70 columns. Generally, you should use plain_string or colored_string if possible, but display() can be useful for trace lines and things like that, where you don’t have control over the terminal.

fn plain_string(&self, width: usize) -> String

fn colored_string(&self, width: usize) -> String

impl Serialize for ArgumentError

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

Serialize this value into the given Serde serializer.

impl Eq for ArgumentError

impl StructuralEq for ArgumentError

impl StructuralPartialEq for ArgumentError