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pub enum ReqParseError {
    InvalidVersionRequirement,
    OpAlreadySet,
    InvalidSigil,
    VersionComponentsMustBeNumeric,
    InvalidIdentifier,
    MajorVersionRequired,
    UnimplementedVersionRequirement,
    DeprecatedVersionRequirement(VersionReq),
}
Expand description

A ReqParseError is returned from methods which parse a string into a VersionReq. Each enumeration is one of the possible errors that can occur. VersionReq: struct.VersionReq.html

Variants

InvalidVersionRequirement

The given version requirement is invalid.

OpAlreadySet

You have already provided an operation, such as =, ~, or ^. Only use one.

InvalidSigil

The sigil you have written is not correct.

VersionComponentsMustBeNumeric

All components of a version must be numeric.

InvalidIdentifier

There was an error parsing an identifier.

MajorVersionRequired

At least a major version is required.

UnimplementedVersionRequirement

An unimplemented version requirement.

DeprecatedVersionRequirement(VersionReq)

This form of requirement is deprecated.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

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

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

Returns a stack backtrace, if available, of where this error occurred. Read more

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

Performs the conversion.

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

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

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.