miniml/lib/parse.js

A minimal, embeddable semantic data modeling language for generating SQL queries from YAML model definitions. Inspired by LookML.

import pkg from "node-sql-parser";
const { Parser } = pkg;
import { extractFieldReferencesFromNode } from "./common.js";
export function extractFieldReferences(expression, model) {
    if (!expression?.trim())
        return [];
    let ast;
    try {
        const parser = new Parser();
        const wrappedSql = `SELECT * FROM dummy WHERE ${expression.trim()}`;
        ast = parser.astify(wrappedSql, { database: model.dialect });
    }
    catch (error) {
        return [];
    }
    const reference_fields = new Set();
    if (ast && typeof ast === 'object') {
        const selectStmt = Array.isArray(ast) ? ast[0] : ast;
        if (selectStmt && typeof selectStmt === 'object' && 'where' in selectStmt)
            extractFieldReferencesFromNode(selectStmt.where, reference_fields);
    }
    return Array.from(reference_fields);
}
//# sourceMappingURL=parse.js.map