30 lines
947 B
TypeScript
30 lines
947 B
TypeScript
import { ParseTree, parseTreeToAST } from "$sb/lib/tree.ts";
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import { replaceTemplateVars } from "../template/template.ts";
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import { PageMeta } from "$sb/types.ts";
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import { expressionToKvQueryExpression } from "$sb/lib/parse-query.ts";
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import { evalQueryExpression } from "$sb/lib/query.ts";
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import { builtinFunctions } from "$sb/lib/builtin_query_functions.ts";
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// This is rather scary and fragile stuff, but it works.
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export async function evalDirectiveRenderer(
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_directive: string,
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pageMeta: PageMeta,
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expression: string | ParseTree,
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): Promise<string> {
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try {
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const result = evalQueryExpression(
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expressionToKvQueryExpression(parseTreeToAST(
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JSON.parse(
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await replaceTemplateVars(JSON.stringify(expression), pageMeta),
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),
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)),
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{},
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builtinFunctions,
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);
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return Promise.resolve("" + result);
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} catch (e: any) {
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return Promise.resolve(`**ERROR:** ${e.message}`);
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}
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}
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