43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
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export function generateSemantic(path, op, oldValue, newValue, delta, operandValue) {
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const p = String(path ?? '').replace(/\./g, ' > ');
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const fmt = (v) => {
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if (v === undefined) return '空';
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if (v === null) return 'null';
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try {
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if (typeof v === 'string') return JSON.stringify(v);
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return JSON.stringify(v);
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} catch {
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return String(v);
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}
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};
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switch (op) {
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case 'set':
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return oldValue === undefined
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? `${p} 设为 ${fmt(newValue)}`
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: `${p} 从 ${fmt(oldValue)} 变为 ${fmt(newValue)}`;
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case 'inc': {
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const sign = (delta ?? 0) >= 0 ? '+' : '';
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return `${p} ${sign}${delta}（${fmt(oldValue)} → ${fmt(newValue)}）`;
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}
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case 'push': {
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const items = Array.isArray(operandValue) ? operandValue : [operandValue];
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return `${p} 加入 ${items.map(fmt).join('、')}`;
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}
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case 'pop': {
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const items = Array.isArray(operandValue) ? operandValue : [operandValue];
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return `${p} 移除 ${items.map(fmt).join('、')}`;
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}
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case 'del':
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return `${p} 被删除（原值 ${fmt(oldValue)}）`;
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default:
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return `${p} 操作 ${op}`;
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}
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}
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