More lsp support

This makes the LSP support complete for now:

- Completion
- Diagnostics
- Goto implementation/declaration
- Rename
- Documentation
- Find references

2 files changed, 55 insertions, 0 deletions

diff --git a/test/json/diag.json b/test/json/diag.json
new file mode 100644
index 0000000..4384ea3
--- /dev/null
+++ b/test/json/diag.json
@@ -0,0 +1,54 @@
+{
+  "jsonrpc": "2.0",
+  "method": "textDocument/publishDiagnostics",
+  "params": {
+    "diagnostics": [
+      {
+        "code": "unused-includes",
+        "codeDescription": {
+          "href": "https://clangd.llvm.org/guides/include-cleaner"
+        },
+        "message": "Included header errno.h is not used directly (fixes available)",
+        "range": {
+          "end": {
+            "character": 18,
+            "line": 4
+          },
+          "start": {
+            "character": 0,
+            "line": 4
+          }
+        },
+        "severity": 2,
+        "source": "clangd",
+        "tags": [
+          1
+        ]
+      },
+      {
+        "code": "unused-includes",
+        "codeDescription": {
+          "href": "https://clangd.llvm.org/guides/include-cleaner"
+        },
+        "message": "Included header hash.h is not used directly (fixes available)",
+        "range": {
+          "end": {
+            "character": 17,
+            "line": 16
+          },
+          "start": {
+            "character": 0,
+            "line": 16
+          }
+        },
+        "severity": 2,
+        "source": "clangd",
+        "tags": [
+          1
+        ]
+      }
+    ],
+    "uri": "file:///home/abbe/code/dged/src/dged/syntax.c",
+    "version": 0
+  }
+}
diff --git a/test/json/diag2.json b/test/json/diag2.json
new file mode 100644
index 0000000..3c0989d
--- /dev/null
+++ b/test/json/diag2.json
@@ -0,0 +1 @@
+{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"code":"expected_after","message":"Expected ';' after struct (fix available)","range":{"end":{"character":3,"line":4},"start":{"character":0,"line":4}},"severity":1,"source":"clang"},{"code":"-Wmissing-declarations","message":"Declaration does not declare anything","range":{"end":{"character":6,"line":1},"start":{"character":0,"line":1}},"severity":1,"source":"clang"},{"code":"expected","message":"Expected '}'\n\ntest.c:9:13: note: to match this '{'","range":{"end":{"character":13,"line":8},"start":{"character":13,"line":8}},"severity":1,"source":"clang"},{"message":"To match this '{'\n\ntest.c:9:14: error: expected '}'","range":{"end":{"character":13,"line":8},"start":{"character":12,"line":8}},"severity":3},{"code":"expected_after","message":"Expected ';' after struct (fix available)","range":{"end":{"character":13,"line":8},"start":{"character":13,"line":8}},"severity":1,"source":"clang"}],"uri":"file:///home/abbe/code/dged/test.c","version":33}}