[clangd] Relax definitions.test to accept windows file paths.

[ilya-biryukov]

LGTM.

test/clangd/definitions.test

 # CHECK-NEXT:          "character": 5,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":2,"character":1}}}
 # Go to local variable, end of token
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 5,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 214
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":2},"contentChanges":[{"text":"struct Foo {\nint x;\n};\nint main() {\n  Foo bar = { x : 1 };\n}\n"}]}}
 
 Content-Length: 149
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":4,"character":14}}}
 # Go to field, GNU old-style field designator 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 5,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 215
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":3},"contentChanges":[{"text":"struct Foo {\nint x;\n};\nint main() {\n  Foo baz = { .x = 2 };\n}\n"}]}}
 
 Content-Length: 149
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":4,"character":15}}}
 # Go to field, field designator 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 5,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 187
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":4},"contentChanges":[{"text":"int main() {\n   main();\n   return 0;\n}"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":1,"character":3}}}
 # Go to function declaration, function call 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 1,
 # CHECK-NEXT:          "line": 3
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 208
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":5},"contentChanges":[{"text":"struct Foo {\n};\nint main() {\n   Foo bar;\n   return 0;\n}\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":3,"character":3}}}
 # Go to struct declaration, new struct instance 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 1,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 231
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":5},"contentChanges":[{"text":"namespace n1 {\nstruct Foo {\n};\n}\nint main() {\n   n1::Foo bar;\n   return 0;\n}\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":5,"character":4}}}
 # Go to struct declaration, new struct instance, qualified name 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 1,
 # CHECK-NEXT:          "line": 3
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 215
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":6},"contentChanges":[{"text":"struct Foo {\n  int x;\n};\nint main() {\n   Foo bar;\n   bar.x;\n}\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":5,"character":7}}}
 # Go to field declaration, field reference 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 7,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 2,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 220
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"struct Foo {\n  void x();\n};\nint main() {\n   Foo bar;\n   bar.x();\n}\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":5,"character":7}}}
 # Go to method declaration, method call 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 10,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 2,
 # CHECK-NEXT:          "line": 1
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 240
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"struct Foo {\n};\ntypedef Foo TypedefFoo;\nint main() {\n   TypedefFoo bar;\n   return 0;\n}\n"}]}}
 
 Content-Length: 149
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":4,"character":10}}}
 # Go to typedef 
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 22,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 254
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"template <typename MyTemplateParam>\nvoid foo() {\n MyTemplateParam a;\n}\nint main() {\n   return 0;\n}\n"}]}}
 
 Content-Length: 149
 

 # CHECK-NEXT:          "character": 1,
 # CHECK-NEXT:          "line": 4
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 0,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 265
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"namespace ns {\nstruct Foo {\n  int field;\n  Foo(int param) : field(param) {}\n};\n}\nint main() {\n   return 0;\n}\n"}]}}
 
 Content-Length: 149
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":3,"character":21}}}
 # Go to field, member initializer
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 11,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 2,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 204
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"#define MY_MACRO 0\nint main() {\n  return MY_MACRO;\n}\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":2,"character":9}}}
 # Go to macro.
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 18,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 8,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 217
 
 {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"#define FOO 1\nint a = FOO;\n#define FOO 2\nint b = FOO;\n#undef FOO\n"}]}}
 
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":1,"character":8}}}
 # Go to macro, re-defined later
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 13,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 8,
 # CHECK-NEXT:          "line": 0
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":3,"character":8}}}
 # Go to macro, undefined later
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 13,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 8,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 148
 
 {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":4,"character":7}}}
 # Go to macro, being undefined
 #      CHECK:  "id": 1,
 # CHECK-NEXT:  "jsonrpc": "2.0",
 # CHECK-NEXT:  "result": [
 # CHECK-NEXT:    {
 # CHECK-NEXT:      "range": {
 # CHECK-NEXT:        "end": {
 # CHECK-NEXT:          "character": 13,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        },
 # CHECK-NEXT:        "start": {
 # CHECK-NEXT:          "character": 8,
 # CHECK-NEXT:          "line": 2
 # CHECK-NEXT:        }
 # CHECK-NEXT:      },
-# CHECK-NEXT:      "uri": "file:///main.cpp"
+# CHECK-NEXT:      "uri": "file:///{{([A-Z]:/)?}}main.cpp"
 # CHECK-NEXT:    }
 # CHECK-NEXT:  ]
 Content-Length: 156
 
 {"jsonrpc":"2.0","id":2,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///doesnotexist.cpp"},"position":{"line":4,"character":7}}}
 #      CHECK:  "error": {
 # CHECK-NEXT:    "code": -32602,
 # CHECK-NEXT:    "message": "findDefinitions called on non-added file"