xpath-ts2
Version:
DOM 3 and 4 XPath 1.0 implementation for browser and Node.js environment with support for typescript 5.
72 lines • 2.32 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.XPathEvaluatorImpl = void 0;
const node_x_path_ns_resolver_1 = require("./node-x-path-ns-resolver");
const types_1 = require("./utils/types");
const xpath_exception_1 = require("./xpath-exception");
const xpath_expression_impl_1 = require("./xpath-expression-impl");
const xpath_ns_resolver_wrapper_1 = require("./xpath-ns-resolver-wrapper");
class XPathEvaluatorImpl {
functionResolver;
variableResolver;
namespaceResolver;
parser;
constructor({ fr, vr, p }) {
this.functionResolver = fr;
this.variableResolver = vr;
this.parser = p;
}
createExpression(e, r) {
try {
return new xpath_expression_impl_1.XPathExpressionImpl(e, {
fr: this.functionResolver,
nr: r == null ? this.namespaceResolver : new xpath_ns_resolver_wrapper_1.XPathNSResolverWrapper(r),
vr: this.variableResolver,
p: this.parser
});
}
catch (err) {
throw new xpath_exception_1.XPathException(xpath_exception_1.XPathException.INVALID_EXPRESSION_ERR, err);
}
}
createNSResolver(n) {
return new node_x_path_ns_resolver_1.NodeXPathNSResolver(n);
}
evaluate(expression, contextNode, resolver, type, result) {
if (type < 0 || type > 9) {
throw {
code: 0,
toString() {
return 'Request type not supported';
}
};
}
if (resolver != null) {
resolver = convertNSResolver(resolver);
}
const ex = this.createExpression(expression, resolver);
return ex.evaluate(contextNode, type, result);
}
}
exports.XPathEvaluatorImpl = XPathEvaluatorImpl;
function convertNSResolver(resolver) {
if (resolver == null) {
return {
lookupNamespaceURI(_prefix) {
return null;
}
};
}
else if (!(0, types_1.isNSResolver)(resolver)) {
const pr = resolver;
return {
lookupNamespaceURI(prefix) {
return pr(prefix);
}
};
}
else {
return resolver;
}
}
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