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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | 586x 27x 559x 559x 559x 6690x 1994x 559x 6695x 6695x 3601x 3601x 3094x | /**
* Class Resolver
*
* Resolves CSS class names for a specific permutation state.
* Unlike framework generators that emit runtime conditionals,
* the static generator evaluates conditions at generation time
* to produce the final class string.
*/
import type { ClassNameRule } from '@fds-uif/generator-base/browser';
import type { PermutationState } from './types.js';
/**
* Resolve the final CSS class string for a given permutation state.
* Starts with base classes and appends each conditional class
* whose condition evaluates to true against the state.
*/
export function resolveClasses(classNames: ClassNameRule[], state: PermutationState): string {
if (!classNames || classNames.length === 0) {
return '';
}
const rule = classNames[0];
const resolved = [...rule.base];
for (const cond of rule.conditional) {
if (evaluateCondition(cond.condition, state)) {
resolved.push(...cond.classes);
}
}
return resolved.join(' ');
}
/**
* Evaluate a condition string against the current permutation state.
*
* Supports two forms:
* - Boolean modifier: "inverse" → state.modifiers.inverse
* - Variant equality: "variant === 'success'" → state.variants.variant === 'success'
*/
export function evaluateCondition(condition: string, state: PermutationState): boolean {
const equalityMatch = condition.match(/^(\w+)\s*===\s*'([^']+)'$/);
if (equalityMatch) {
const [, prop, value] = equalityMatch;
return state.variants[prop] === value;
}
return state.modifiers[condition] === true;
}
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