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36 lines
1.3 KiB
36 lines
1.3 KiB
/** Level 配表字段解析（标量或按索引数组） */
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export class LevelFieldResolver {
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/** 取数值字段 */
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static pickNumber(value: number | number[] | undefined | null, index: number, fallback: number): number {
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if (Array.isArray(value)) {
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if (index >= 0 && index < value.length) {
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const n = Number(value[index]);
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return Number.isFinite(n) ? n : fallback;
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}
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if (value.length > 0) {
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const n = Number(value[0]);
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return Number.isFinite(n) ? n : fallback;
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}
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return fallback;
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}
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if (typeof value === 'number' && Number.isFinite(value)) return value;
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return fallback;
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}
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/** 取泛型字段 */
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static pickField<T>(value: T | T[] | undefined | null, index: number, fallback: T): T {
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if (value == null) return fallback;
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if (Array.isArray(value)) {
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if (index >= 0 && index < value.length) return value[index];
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return value.length > 0 ? value[0] : fallback;
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}
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return value;
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}
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/** 取字符串；`#` 前为默认段 */
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static pickString(value: string | undefined | null): string {
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if (!value) return '';
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if (!value.includes('#')) return value;
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return value.split('#')[0] ?? '';
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}
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}
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