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load(libdir + "match.js")
// At the moment, findPath just returns the names as provided by ubi::Node,
// which just uses js::TraceChildren for now. However, we have various plans
// to improve the quality of ubi::Node's metadata, to improve the precision
// and clarity of the results here.
var o = { w: { x: { y: { z: {} } } } };
Match.Pattern([{node: {}, edge: "w"},
{node: {}, edge: "x"},
{node: {}, edge: "y"},
{node: {}, edge: "z"}])
.assert(findPath(o, o.w.x.y.z));
print(JSON.stringify(findPath(o, o.w.x.y.z)));
var a = [ , o ];
Match.Pattern([{node: {}, edge: "objectElements[1]"}])
.assert(findPath(a, o));
print(JSON.stringify(findPath(a, o)));
function C() {}
C.prototype.obj = {};
var c = new C;
Match.Pattern([{node: {}, edge: "group"},
{node: Match.Pattern.ANY, edge: "group_proto"},
{node: { constructor: Match.Pattern.ANY }, edge: "obj"}])
.assert(findPath(c, c.obj));
print(JSON.stringify(findPath(c, c.obj)));
function f(x) { return function g(y) { return x+y; }; }
var o = {}
var gc = f(o);
Match.Pattern([{node: gc, edge: "fun_environment"},
{node: Match.Pattern.ANY, edge: "x"}])
.assert(findPath(gc, o));
print(JSON.stringify(findPath(gc, o)));
Match.Pattern([{node: {}, edge: "group"},
{node: Match.Pattern.ANY, edge: "group_global"},
{node: {}, edge: "o"}])
.assert(findPath(o, o));
print(findPath(o, o).map((e) => e.edge).toString());
// Check that we can generate ubi::Nodes for Symbols.
var so = { sym: Symbol() };
Match.Pattern([{node: {}, edge: "sym" }])
.assert(findPath(so, so.sym));
print(findPath(so, so.sym).map((e) => e.edge).toString());
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