# RUN: clangd -lit-test < %s | FileCheck -strict-whitespace %s
# RUN: clangd -lit-test -pch-storage=memory < %s | FileCheck -strict-whitespace %s
# Tests InsertReplaceEdit ranges when insertReplaceSupport is true.
# insert range = [token_start, cursor), replace range = [token_start, token_end).
{
  "jsonrpc": "2.0",
  "id": 0,
  "method": "initialize",
  "params": {
    "processId": 123,
    "rootPath": "clangd",
    "capabilities": {
      "textDocument": {
        "completion": {
          "completionItem": {
            "insertReplaceSupport": true
          }
        }
      }
    },
    "trace": "off"
  }
}
---
# Case 1 (cursor at end of token): "S().a^"
# Prefix typed, nothing after cursor. insert == replace.
# insert: [4,5], replace: [4,5]
{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///main.cpp","languageId":"cpp","version":1,"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().a;\n}"}}}
---
{"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":5}}}
#      CHECK:  "id": 1
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "a",
# CHECK-NEXT:      "insertText": "a",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 5,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "a",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 5,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 2 (mid-word cursor): "S().ab^c"
# Cursor mid-word. Replace range extends past cursor to cover suffix.
# insert: [4,6], replace: [4,7]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":2},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().abc;\n}"}]}}
---
{"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":6}}}
#      CHECK:  "id": 2
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "abc",
# CHECK-NEXT:      "insertText": "abc",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 6,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "abc",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 7,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 3 (no prefix, word after cursor): "S().^xyz"
# Cursor right after dot, entire existing word is suffix. Insert range is empty.
# insert: [4,4], replace: [4,7]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":3},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().xyz;\n}"}]}}
---
{"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":4}}}
#      CHECK:  "id": 3
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": {{.*}},
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 7,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 4 (unicode mid-word): "S().chrz^ąszcz"
# Cursor mid-word with multi-byte suffix. Tests that ranges handle unicode.
# "chrząszcz" is 9 characters starting at column 4.
# insert: [4,8], replace: [4,13]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":4},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().chrząszcz;\n}"}]}}
---
{"jsonrpc":"2.0","id":4,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":8}}}
#      CHECK:  "id": 4
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "chrząszcz",
# CHECK-NEXT:      "insertText": "chrząszcz",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 8,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "chrząszcz",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 13,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 5 (replace stops at paren): "S().ab^c(123)"
# Replace range covers only the identifier, not the '(' or arguments.
# insert: [4,6], replace: [4,7]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":5},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().abc(123);\n}"}]}}
---
{"jsonrpc":"2.0","id":5,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":6}}}
#      CHECK:  "id": 5
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "abc",
# CHECK-NEXT:      "insertText": "abc",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 6,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "abc",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 7,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 6 (replace stops at angle bracket): "S().ab^c<int>()"
# Replace range covers only the identifier, not '<' or template arguments.
# insert: [4,6], replace: [4,7]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":6},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().abc<int>();\n}"}]}}
---
{"jsonrpc":"2.0","id":6,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":6}}}
#      CHECK:  "id": 6
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "abc",
# CHECK-NEXT:      "insertText": "abc",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 6,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "abc",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 7,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
# Case 7 (replace stops before '='): "S().ab^c = 1;"
# Replace range covers only the identifier, not the space or '='.
# insert: [4,6], replace: [4,7]
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"test:///main.cpp","version":7},"contentChanges":[{"text":"struct S { int a; int abc; int chrząszcz; };\nint main() {\nS().abc = 1;\n}"}]}}
---
{"jsonrpc":"2.0","id":7,"method":"textDocument/completion","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":6}}}
#      CHECK:  "id": 7
# CHECK-NEXT:  "jsonrpc": "2.0",
# CHECK-NEXT:  "result": {
# CHECK:      "filterText": "abc",
# CHECK-NEXT:      "insertText": "abc",
# CHECK:      "textEdit": {
# CHECK-NEXT:        "insert": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 6,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        },
# CHECK-NEXT:        "newText": "abc",
# CHECK-NEXT:        "replace": {
# CHECK-NEXT:          "end": {
# CHECK-NEXT:            "character": 7,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:          "start": {
# CHECK-NEXT:            "character": 4,
# CHECK-NEXT:            "line": 2
# CHECK-NEXT:          }
# CHECK-NEXT:        }
# CHECK-NEXT:      }
---
{"jsonrpc":"2.0","id":8,"method":"shutdown"}
---
{"jsonrpc":"2.0","method":"exit"}