Struct ThemeVariants 

pub struct ThemeVariants { /* private fields */ }

Theme variants containing styles for base, light, and dark modes.

Each variant is a map of style names to concrete console::Style values. Alias definitions are stored separately and resolved at lookup time.

Resolution Strategy

When looking up a style for a given mode:

1. If the style is an alias, follow the chain to find the concrete style
2. For concrete styles, check if a mode-specific variant exists
3. If yes, return the mode variant (base merged with mode overrides)
4. If no, return the base style

Pruning

During construction, mode variants are only stored if they differ from base. This optimization means:

• Styles with no light: or dark: sections only have base entries
• Styles with overrides have entries in the relevant mode map

Implementations

impl ThemeVariants

pub fn new() -> Self

Creates empty theme variants.

pub fn resolve(&self, mode: Option<ColorMode>) -> HashMap<String, StyleValue>

Resolves styles for the given color mode.

Returns a HashMap<String, StyleValue> where:

• Aliases are preserved as StyleValue::Alias
• Concrete styles are StyleValue::Concrete with the mode-appropriate style

For light/dark modes, mode-specific styles take precedence over base. For unknown mode (None), only base styles are used.

pub fn base(&self) -> &HashMap<String, Style>

Returns the base styles map.

pub fn light(&self) -> &HashMap<String, Style>

Returns the light mode styles map.

pub fn dark(&self) -> &HashMap<String, Style>

Returns the dark mode styles map.

pub fn aliases(&self) -> &HashMap<String, String>

Returns the aliases map.

pub fn is_empty(&self) -> bool

Returns true if no styles are defined.

pub fn len(&self) -> usize

Returns the number of defined styles (base + aliases).

Trait Implementations

impl Clone for ThemeVariants

fn clone(&self) -> ThemeVariants

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThemeVariants

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

Formats the value using the given formatter.

impl Default for ThemeVariants

fn default() -> Self

Returns the “default value” for a type.