ccls/index_tests/namespaces/namespace_reference.cc

namespace ns {
  int Foo;
  void Accept(int a) {}
}

void Runner() {
  ns::Accept(ns::Foo);
  using namespace ns;
  Accept(Foo);
}

/*
OUTPUT:
{
  "includes": [],
  "skipped_ranges": [],
  "usr2func": [{
      "usr": 631910859630953711,
      "detailed_name": "void Runner()",
      "qual_name_offset": 5,
      "short_name": "Runner",
      "kind": 12,
      "storage": 0,
      "declarations": [],
      "spell": "6:6-6:12|0|1|2|-1",
      "extent": "6:1-10:2|0|1|0|-1",
      "bases": [],
      "derived": [],
      "vars": [],
      "uses": [],
      "callees": ["7:7-7:13|17328473273923617489|3|16420", "9:3-9:9|17328473273923617489|3|16420"]
    }, {
      "usr": 17328473273923617489,
      "detailed_name": "void ns::Accept(int a)",
      "qual_name_offset": 5,
      "short_name": "Accept",
      "kind": 12,
      "storage": 0,
      "declarations": [],
      "spell": "3:8-3:14|11072669167287398027|2|1026|-1",
      "extent": "3:3-3:24|11072669167287398027|2|0|-1",
      "bases": [],
      "derived": [],
      "vars": [3649375698083002347],
      "uses": ["7:7-7:13|631910859630953711|3|16420|-1", "9:3-9:9|631910859630953711|3|16420|-1"],
      "callees": []
    }],
  "usr2type": [{
      "usr": 53,
      "detailed_name": "",
      "qual_name_offset": 0,
      "short_name": "",
      "kind": 0,
      "declarations": [],
      "alias_of": 0,
      "bases": [],
      "derived": [],
      "types": [],
      "funcs": [],
      "vars": [],
      "instances": [12898699035586282159, 3649375698083002347],
      "uses": []
    }, {
      "usr": 11072669167287398027,
      "detailed_name": "namespace ns {}",
      "qual_name_offset": 10,
      "short_name": "ns",
      "kind": 3,
      "declarations": ["1:11-1:13|1:1-4:2|0|1|1|-1"],
      "alias_of": 0,
      "bases": [],
      "derived": [],
      "types": [],
      "funcs": [17328473273923617489],
      "vars": [{
          "L": 12898699035586282159,
          "R": -1
        }],
      "instances": [],
      "uses": ["7:3-7:5|631910859630953711|3|4|-1", "7:14-7:16|631910859630953711|3|4|-1", "8:19-8:21|631910859630953711|3|4|-1"]
    }],
  "usr2var": [{
      "usr": 3649375698083002347,
      "detailed_name": "int a",
      "qual_name_offset": 4,
      "short_name": "a",
      "declarations": [],
      "spell": "3:19-3:20|17328473273923617489|3|1026|-1",
      "extent": "3:15-3:20|17328473273923617489|3|0|-1",
      "type": 53,
      "uses": [],
      "kind": 253,
      "storage": 0
    }, {
      "usr": 12898699035586282159,
      "detailed_name": "int ns::Foo",
      "qual_name_offset": 4,
      "short_name": "Foo",
      "declarations": [],
      "spell": "2:7-2:10|11072669167287398027|2|1026|-1",
      "extent": "2:3-2:10|11072669167287398027|2|0|-1",
      "type": 53,
      "uses": ["7:18-7:21|631910859630953711|3|12|-1", "9:10-9:13|631910859630953711|3|12|-1"],
      "kind": 13,
      "storage": 0
    }]
}
*/