artichoke::parser

Enum State

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pub enum State {
    ParseError,
    CodeTooLong,
    UnexpectedEnd,
    UnexpectedProgramEnd,
    UnexpectedRegexpBegin,
    UnterminatedBlock,
    UnterminatedHeredoc,
    UnterminatedString,
    Valid,
}
Expand description

State shows whether artichoke can parse some code or why it cannot.

This enum only encapsulates whether artichoke can parse the code. It may still have syntactic or semantic errors.

Variants§

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ParseError

Internal parser error. This is a fatal error.

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CodeTooLong

Code must be fewer than isize::MAX bytes.

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UnexpectedEnd

The code has too many end statements.

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UnexpectedProgramEnd

The code has unclosed blocks.

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UnexpectedRegexpBegin

The current expression is an unterminated Regexp.

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UnterminatedBlock

The current expression is an unterminated block.

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UnterminatedHeredoc

The current expression is an unterminated heredoc.

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UnterminatedString

The current expression is an unterminated String.

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Valid

Code is valid and fit to eval.

Implementations§

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impl State

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pub const fn new() -> Self

Construct a new, default State.

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pub fn is_code_block_open(self) -> bool

Whether this variant indicates a code block is open.

This method can be used by a REPL to check whether to buffer code or begin a multi-line editing session before attempting to eval the code on an interpreter.

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pub fn is_recoverable_error(self) -> bool

Whether this variant is a recoverable error.

Recoverable errors should be handled by resetting the parser and input buffer.

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pub fn is_fatal(self) -> bool

Whether this variant is a fatal parse error.

Fatal parser states indicate the parser is corrupted and cannot be used again.

Trait Implementations§

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impl Clone for State

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fn clone(&self) -> State

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for State

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

Formats the value using the given formatter. Read more
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impl Default for State

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Hash for State

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for State

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for State

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

Tests for self and other values to be equal, and is used by ==.
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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 PartialOrd for State

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

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

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impl Eq for State

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impl StructuralPartialEq for State

Auto Trait Implementations§

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impl Freeze for State

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impl RefUnwindSafe for State

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impl Send for State

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impl Sync for State

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impl Unpin for State

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impl UnwindSafe for State

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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.