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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 | 3x 3x 1223x 6634x 2849x 2675x 2675x 2675x 2675x 2675x 2675x 2535x 162x 3x 3x 3x 1223x | import type {Expr, JsonExpressionCodegenContext, JsonExpressionExecutionContext, Literal, OperatorMap} from './types';
import * as util from './util';
export const createEvaluate = ({operators, createPattern}: {operators: OperatorMap} & JsonExpressionCodegenContext) => {
const evaluate = (
expr: Expr | Literal<unknown>,
ctx: JsonExpressionExecutionContext & JsonExpressionCodegenContext,
): unknown => {
if (!(expr instanceof Array)) return expr;
if (expr.length === 1) return expr[0];
const fn = expr[0];
const def = operators.get(fn);
try {
if (def) {
const [name, , arity, fn] = def;
util.assertArity(name, arity, expr);
return fn(expr, {createPattern, ...ctx, eval: evaluate});
}
throw new Error('Unknown expression:' + JSON.stringify(expr));
} catch (err) {
if (err instanceof Error) throw err;
const error = new Error('Expression evaluation error.');
(<any>error).value = err;
throw error;
}
};
return evaluate;
};
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