Enum BuildError 

#[non_exhaustive]
pub enum BuildError {
    MissingRole {
        role: String,
        mapping_file: String,
    },
    MissingSvg {
        path: String,
    },
    UnknownRole {
        role: String,
        mapping_file: String,
    },
    UnknownTheme {
        theme: String,
    },
    MissingDefault {
        role: String,
        mapping_file: String,
    },
    DuplicateRole {
        role: String,
        file_a: String,
        file_b: String,
    },
    Io {
        message: String,
    },
    InvalidIdentifier {
        name: String,
        reason: String,
    },
    IdentifierCollision {
        role_a: String,
        role_b: String,
        pascal: String,
    },
    ThemeOverlap {
        theme: String,
    },
    DuplicateRoleInFile {
        role: String,
        file: String,
    },
    DuplicateTheme {
        theme: String,
        list: String,
    },
    InvalidIconName {
        name: String,
        role: String,
        mapping_file: String,
    },
}

Build-time error for icon code generation.

Each variant provides structured context for actionable error messages suitable for cargo::error= output.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

MissingRole

A role declared in the master TOML is missing from a theme mapping file.

Fields

role: String

The role name that is missing.

mapping_file: String

Path to the mapping file where the role is expected.

MissingSvg

An SVG file referenced by a bundled theme mapping does not exist.

Fields

path: String

Filesystem path to the missing SVG.

UnknownRole

A role in a mapping file is not declared in the master TOML.

Fields

role: String

The unexpected role name found in the mapping.

mapping_file: String

Path to the mapping file containing the unknown role.

UnknownTheme

A theme name does not match any known IconSet variant.

Fields

theme: String

The unrecognized theme name.

MissingDefault

A DE-aware mapping value is missing the required default key.

Fields

role: String

The role whose DE-aware mapping lacks a default.

mapping_file: String

Path to the mapping file.

DuplicateRole

A role name appears in multiple TOML files.

Fields

role: String

The duplicated role name.

file_a: String

Path to the first file declaring the role.

file_b: String

Path to the second file declaring the role.

Io

A TOML or SVG file could not be read or parsed.

Fields

message: String

Human-readable description of the I/O error.

InvalidIdentifier

A role or enum name produces an invalid Rust identifier.

Fields

name: String

The original name that failed validation.

reason: String

Why the identifier is invalid.

IdentifierCollision

Two different role names produce the same PascalCase enum variant.

Fields

role_a: String

The first role name.

role_b: String

The second role name.

pascal: String

The PascalCase variant they both produce.

ThemeOverlap

A theme name appears in both bundled_themes and system_themes.

Fields

theme: String

The overlapping theme name.

DuplicateRoleInFile

A role name appears more than once in a single config file.

Fields

role: String

The duplicated role name.

file: String

Path to the file containing the duplicate.

DuplicateTheme

A theme name appears more than once in the same list.

Fields

theme: String

The duplicated theme name.

list: String

Which list contains the duplicate ("bundled-themes" or "system-themes").

InvalidIconName

A mapping value contains characters that are invalid for an icon name.

Fields

name: String

The offending icon name.

role: String

The role it belongs to.

mapping_file: String

Path to the mapping file.

Trait Implementations

impl Clone for BuildError

fn clone(&self) -> BuildError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuildError

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

Formats the value using the given formatter.

impl Display for BuildError

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

Formats the value using the given formatter.

impl Error for BuildError

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

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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.