resolveValueExpression function
Resolves either a plain JSON path or a formula against one data row.
Implementation
dynamic resolveValueExpression(String expression, dynamic data) {
var normalized = expression.trim();
if (normalized.startsWith('{{=') && normalized.endsWith('}}')) {
normalized = normalized.substring(3, normalized.length - 2).trim();
}
try {
return evaluateFormula(normalized, data);
} catch (_) {
return resolvePath(normalized, data);
}
}